/* roulang page: index */
:root{
  --c-bg:#0B0D12; --c-bg-2:#14161F; --c-surface:#1B1E29;
  --c-line:rgba(255,255,255,.07); --c-line-strong:rgba(255,255,255,.18);
  --c-text:#F2F5FA; --c-text-2:#A7B0C0; --c-text-3:#6C7688;
  --c-primary:#FF6A1F; --c-primary-end:#FF9A3D;
  --c-accent:#17C3E8; --c-lime:#C6F24E; --c-danger:#FF5C5C;
  --r-lg:20px; --r-md:16px; --r-sm:12px; --r-pill:999px; --r-tag:6px;
  --sh-card:0 8px 24px rgba(0,0,0,.35);
  --sh-hover:0 0 0 1px rgba(255,106,31,.45),0 10px 28px rgba(255,106,31,.28);
  --t:.18s ease-out;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"SF Mono","JetBrains Mono","Roboto Mono",ui-monospace,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;background:var(--c-bg);color:var(--c-text);
  font-family:var(--font);font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1{font-size:clamp(28px,5vw,48px);font-weight:900;line-height:1.15;letter-spacing:-.01em}
h2{font-size:clamp(22px,3.4vw,34px);font-weight:800;line-height:1.25}
h3{font-size:20px;font-weight:700;line-height:1.4}
p{color:var(--c-text-2);font-size:16px;line-height:1.8}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0;position:relative}
.section--tight{padding:64px 0}
.section--alt{background:var(--c-bg-2)}
.divider-dots{height:1px;background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);background-size:8px 1px;background-repeat:repeat-x}

/* ============ 顶部倒计时条 ============ */
.topbar{
  background:linear-gradient(90deg,var(--c-primary) 0%,var(--c-primary-end) 55%,var(--c-lime) 100%);
  color:#12140f;font-size:13px;font-weight:700;
}
.topbar .container{display:flex;align-items:center;gap:18px;min-height:40px;padding-top:6px;padding-bottom:6px}
.topbar .tb-tag{
  background:rgba(11,13,18,.86);color:var(--c-lime);border-radius:var(--r-tag);
  padding:3px 10px;font-size:12px;letter-spacing:.08em;white-space:nowrap;
}
.countdown{display:flex;align-items:center;gap:6px;font-family:var(--font-num);font-variant-numeric:tabular-nums}
.countdown .cd-cell{
  background:rgba(11,13,18,.86);color:#fff;border-radius:6px;
  min-width:34px;text-align:center;padding:2px 4px;font-size:14px;font-weight:700;
}
.countdown .cd-sep{opacity:.5;font-weight:900}
.countdown .cd-label{font-size:12px;opacity:.72;margin-right:2px}
.topbar .tb-link{margin-left:auto;white-space:nowrap;color:#12140f;border-bottom:1px solid rgba(11,13,18,.45);transition:var(--t)}
.topbar .tb-link:hover{border-bottom-color:#12140f;color:#000}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(11,13,18,.72);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-line);
  transition:height var(--t),box-shadow var(--t),border-color var(--t);
}
.site-header.is-shrink{border-bottom-color:rgba(255,106,31,.32);box-shadow:0 6px 22px rgba(0,0,0,.5)}
.nav{display:flex;align-items:center;gap:24px;height:68px;transition:height var(--t)}
.site-header.is-shrink .nav{height:60px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-end));
  color:#fff;font-weight:900;font-size:17px;
  box-shadow:0 6px 16px rgba(255,106,31,.35);
  clip-path:polygon(14% 0,100% 0,86% 100%,0 100%);
}
.logo-text{font-size:16px;font-weight:800;letter-spacing:.01em;white-space:nowrap}
.logo-text em{font-style:normal;color:var(--c-primary);margin-left:2px}
.nav-menu{display:flex;align-items:center;gap:4px;margin:0 auto}
.nav-menu a{
  position:relative;display:inline-flex;align-items:center;height:44px;padding:0 14px;
  font-size:15px;color:var(--c-text-2);border-radius:10px;transition:var(--t);white-space:nowrap;
}
.nav-menu a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;background:var(--c-primary);
  transform:scaleX(0);transform-origin:left;transition:transform var(--t);border-radius:2px;
}
.nav-menu a:hover{color:var(--c-text);background:rgba(255,255,255,.04)}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.is-active{color:#fff;font-weight:700}
.nav-menu a.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:700;font-size:15px;border-radius:var(--r-pill);
  min-height:44px;padding:0 24px;transition:var(--t);white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-end));
  color:#fff;box-shadow:0 8px 20px rgba(255,106,31,.3);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,106,31,.45)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 12px rgba(255,106,31,.3)}
.btn-primary[disabled],.btn-primary.is-disabled{opacity:.45;box-shadow:none;pointer-events:none}
.btn-ghost{
  background:transparent;border:1px solid var(--c-line-strong);color:var(--c-text);
}
.btn-ghost:hover{border-color:var(--c-accent);color:#fff;transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-text{color:var(--c-accent);padding:0 6px;min-height:44px;font-weight:700}
.btn-text .arrow{transition:transform var(--t)}
.btn-text:hover .arrow{transform:translateX(4px)}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--c-line-strong);
  position:relative;flex-shrink:0;
}
.nav-toggle span{
  position:absolute;left:12px;right:12px;height:2px;background:var(--c-text);border-radius:2px;
  transition:var(--t);
}
.nav-toggle span:nth-child(1){top:15px}
.nav-toggle span:nth-child(2){top:21px}
.nav-toggle span:nth-child(3){top:27px}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.drawer{
  position:fixed;inset:0;z-index:120;background:rgba(11,13,18,.98);
  display:flex;flex-direction:column;padding:24px;transform:translateX(100%);
  transition:transform .24s ease-out;visibility:hidden;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--c-line-strong);font-size:20px;color:var(--c-text)}
.drawer nav{display:flex;flex-direction:column;gap:4px}
.drawer nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:56px;padding:0 16px;border-radius:var(--r-sm);
  font-size:17px;font-weight:600;color:var(--c-text-2);border:1px solid transparent;
}
.drawer nav a:hover,.drawer nav a.is-active{color:#fff;background:var(--c-surface);border-color:var(--c-line)}
.drawer-cta{margin-top:auto;padding-top:24px}
.drawer-cta .btn{width:100%}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  background-color:#0B0D12;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  padding:96px 0 80px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(11,13,18,.94) 0%,rgba(11,13,18,.72) 55%,rgba(11,13,18,.86) 100%);
}
.hero::after{
  content:"";position:absolute;top:0;left:0;width:100%;height:100%;
  background-image:radial-gradient(rgba(255,255,255,.09) 1px,transparent 1px);
  background-size:22px 22px;opacity:.5;pointer-events:none;
  -webkit-mask-image:radial-gradient(ellipse at 30% 40%,#000 0%,transparent 70%);
  mask-image:radial-gradient(ellipse at 30% 40%,#000 0%,transparent 70%);
}
.hero .glow{
  position:absolute;top:-120px;right:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,106,31,.34) 0%,rgba(255,106,31,0) 68%);
  pointer-events:none;
}
.hero .container{position:relative;z-index:2}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid rgba(198,242,78,.4);color:var(--c-lime);
  background:rgba(198,242,78,.08);border-radius:var(--r-tag);
  font-size:12px;font-weight:700;letter-spacing:.08em;padding:6px 12px;margin-bottom:22px;
}
.hero h1{max-width:14em;margin-bottom:20px}
.hero h1 .hl{
  background:linear-gradient(120deg,var(--c-primary) 0%,var(--c-lime) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{max-width:640px;font-size:17px;line-height:1.85;color:var(--c-text-2);margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:56px}
.stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;
  background:var(--c-line);border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;
}
.stat{background:rgba(20,22,31,.82);padding:20px 22px}
.stat .stat-num{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:30px;font-weight:800;color:var(--c-lime);line-height:1.2;
}
.stat .stat-num small{font-size:15px;font-weight:700;margin-left:2px}
.stat .stat-label{font-size:13px;color:var(--c-text-3);letter-spacing:.06em;margin-top:4px}

/* ============ 跑马灯 ============ */
.ticker{border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);background:var(--c-bg-2)}
.ticker .container{display:flex;align-items:center;gap:16px;height:52px;overflow:hidden}
.ticker-label{
  flex-shrink:0;font-size:12px;font-weight:800;letter-spacing:.08em;color:var(--c-primary);
  border:1px solid rgba(255,106,31,.45);border-radius:var(--r-tag);padding:3px 10px;
}
.ticker-track{flex:1;overflow:hidden;position:relative;height:24px}
.ticker-move{
  display:inline-flex;gap:48px;white-space:nowrap;
  animation:ticker 36s linear infinite;will-change:transform;
}
.ticker:hover .ticker-move{animation-play-state:paused}
.ticker-move span{font-size:14px;color:var(--c-text-2)}
.ticker-move span i{color:var(--c-lime);font-style:normal;font-weight:700;margin-left:6px}
@keyframes ticker{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ============ 通用板块头 ============ */
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;gap:20px;margin-bottom:44px}
.section-head .eyebrow{
  display:inline-block;font-size:12px;font-weight:800;letter-spacing:.14em;
  color:var(--c-accent);margin-bottom:10px;
}
.section-head h2{position:relative;padding-left:16px}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:2px;
  background:linear-gradient(180deg,var(--c-primary),var(--c-lime));
}
.section-sub{max-width:520px;font-size:15px;color:var(--c-text-3);line-height:1.8}
.section-head .section-sub{margin-left:auto}
@media(max-width:900px){.section-head .section-sub{margin-left:0}}

/* ============ 卖点区 ============ */
.feature-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:20px}
.feature-main{
  position:relative;border:1px solid var(--c-line);border-radius:var(--r-lg);
  background:linear-gradient(150deg,rgba(255,106,31,.12),rgba(27,30,41,.9) 42%),var(--c-surface);
  padding:36px;overflow:hidden;transition:var(--t);
}
.feature-main:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(255,106,31,.45)}
.feature-main .fm-tag{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.08em;
  color:var(--c-lime);border:1px solid rgba(198,242,78,.4);background:rgba(198,242,78,.08);
  border-radius:var(--r-tag);padding:4px 10px;margin-bottom:18px;
}
.feature-main h3{font-size:24px;margin-bottom:12px}
.feature-main p{font-size:15px;max-width:46ch}
.feature-main .fm-list{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:22px}
.feature-main .fm-list li{position:relative;padding-left:18px;font-size:14px;color:var(--c-text-2)}
.feature-main .fm-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:2px;
  background:var(--c-primary);transform:rotate(45deg);
}
.feature-stack{display:grid;gap:20px}
.feature-card{
  border:1px solid var(--c-line);border-radius:var(--r-md);background:var(--c-surface);
  padding:22px;transition:var(--t);
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(255,106,31,.45)}
.feature-card .fc-icon{
  width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
  background:rgba(23,195,232,.12);color:var(--c-accent);font-size:18px;font-weight:800;margin-bottom:14px;
}
.feature-card h3{font-size:17px;margin-bottom:8px}
.feature-card p{font-size:14px;line-height:1.7}

/* ============ 亮点图墙 ============ */
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;grid-auto-rows:190px}
.g-card{
  position:relative;overflow:hidden;border-radius:var(--r-md);border:1px solid var(--c-line);
  background:var(--c-surface);
}
.g-card:nth-child(1){grid-column:span 2;grid-row:span 2}
.g-card:nth-child(6){grid-column:span 2}
.g-card img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.g-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,13,18,.1) 0%,rgba(11,13,18,.86) 100%);
  transition:background var(--t);
}
.g-card:hover img{transform:scale(1.04)}
.g-card:hover::after{background:linear-gradient(180deg,rgba(11,13,18,.02) 0%,rgba(11,13,18,.7) 100%)}
.g-card .g-tag{
  position:absolute;top:12px;left:12px;z-index:2;
  font-size:11px;font-weight:700;letter-spacing:.08em;padding:3px 8px;border-radius:var(--r-tag);
  background:rgba(11,13,18,.78);color:var(--c-accent);border:1px solid rgba(23,195,232,.4);
}
.g-card .g-cap{
  position:absolute;left:14px;right:14px;bottom:12px;z-index:2;
  font-size:14px;font-weight:700;color:#fff;line-height:1.5;
}
.g-card .g-cap small{display:block;font-size:12px;font-weight:500;color:var(--c-text-2);margin-top:2px}

/* ============ 最新信息列表 ============ */
.news-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.news-item{
  display:flex;gap:18px;align-items:flex-start;
  border:1px solid var(--c-line);border-radius:var(--r-md);background:var(--c-surface);
  padding:18px;transition:var(--t);
}
.news-item:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(255,106,31,.45)}
.news-thumb{
  flex:0 0 160px;aspect-ratio:16/9;border-radius:12px;overflow:hidden;background:var(--c-bg-2);
}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-body{min-width:0;flex:1}
.news-body h3{
  font-size:17px;margin:8px 0 6px;color:var(--c-text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body p{
  font-size:14px;color:var(--c-text-2);line-height:1.65;margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body time{font-size:12px;color:var(--c-text-3);font-family:var(--font-num)}
.news-item--lead{grid-column:span 2;flex-direction:row;align-items:stretch;padding:24px}
.news-item--lead .news-thumb{flex:0 0 46%;aspect-ratio:16/9}
.news-item--lead h3{font-size:22px;-webkit-line-clamp:3}
.news-item--lead p{font-size:15px;-webkit-line-clamp:3}
.badge{
  display:inline-block;font-size:12px;letter-spacing:.08em;border-radius:var(--r-tag);
  padding:3px 9px;border:1px solid transparent;font-weight:600;
}
.badge-accent{color:var(--c-accent);border-color:rgba(23,195,232,.4);background:rgba(23,195,232,.08)}
.badge-lime{color:var(--c-lime);border-color:rgba(198,242,78,.4);background:rgba(198,242,78,.08)}
.badge-mute{color:var(--c-text-3);border-color:var(--c-line-strong);background:rgba(255,255,255,.03)}
.empty-state{
  border:1px dashed var(--c-line-strong);border-radius:var(--r-lg);background:var(--c-surface);
  padding:56px 24px;text-align:center;
}
.empty-state .es-icon{
  width:56px;height:56px;margin:0 auto 16px;border-radius:16px;display:grid;place-items:center;
  background:rgba(255,106,31,.12);color:var(--c-primary);font-size:24px;font-weight:900;
}
.empty-state p{font-size:15px;color:var(--c-text-2);margin-bottom:18px}

/* ============ 领取 CTA 区块 ============ */
.claim{
  position:relative;overflow:hidden;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
}
.claim::before{content:"";position:absolute;inset:0;background:linear-gradient(115deg,rgba(11,13,18,.96),rgba(11,13,18,.78))}
.claim .container{position:relative;z-index:2}
.claim-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:start}
.claim h2{margin-bottom:14px}
.claim .lead{font-size:16px;color:var(--c-text-2);max-width:44ch;margin-bottom:28px}
.form-card{
  border:1px solid var(--c-line);border-radius:var(--r-lg);background:rgba(27,30,41,.94);
  padding:28px;box-shadow:var(--sh-card);
}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;font-weight:700;color:var(--c-text-2);margin-bottom:8px}
.field label .req{color:var(--c-danger);margin-left:4px}
.field input[type="text"],.field input[type="tel"]{
  width:100%;height:46px;border-radius:var(--r-sm);background:var(--c-bg-2);
  border:1px solid var(--c-line);padding:0 14px;font-size:15px;color:var(--c-text);
  transition:var(--t);
}
.field input::placeholder{color:var(--c-text-3)}
.field input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(255,106,31,.16)}
.field.has-error input{border-color:var(--c-danger);box-shadow:0 0 0 4px rgba(255,92,92,.14)}
.field .msg{font-size:12px;margin-top:6px;color:var(--c-danger);display:none}
.field.has-error .msg{display:block}
.field.has-success input{border-color:var(--c-lime);box-shadow:0 0 0 4px rgba(198,242,78,.14)}
.captcha-row{display:flex;gap:12px}
.captcha-row input{flex:1}
.captcha-box{
  flex:0 0 108px;height:46px;border-radius:var(--r-sm);border:1px solid var(--c-line);
  background:linear-gradient(120deg,var(--c-bg-2),#1d2130);
  display:grid;place-items:center;font-family:var(--font-num);font-size:18px;
  letter-spacing:.22em;color:var(--c-accent);font-weight:700;user-select:none;
}
.captcha-refresh{font-size:12px;color:var(--c-accent);margin-top:6px;display:inline-block}
.checkbox{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--c-text-2);line-height:1.7}
.checkbox input{width:18px;height:18px;margin-top:3px;accent-color:var(--c-primary);flex-shrink:0}
.form-card .btn-primary{width:100%;margin-top:20px}
.form-note{font-size:12px;color:var(--c-text-3);margin-top:12px;line-height:1.7}
.form-success{
  display:none;margin-top:16px;font-size:14px;font-weight:700;color:var(--c-lime);
  border:1px solid rgba(198,242,78,.4);background:rgba(198,242,78,.08);border-radius:var(--r-sm);
  padding:12px 14px;
}
.form-success.is-show{display:block}
.benefits{border:1px solid var(--c-line);border-radius:var(--r-lg);background:rgba(27,30,41,.72);padding:28px}
.benefits h3{font-size:18px;margin-bottom:18px}
.benefits li{display:flex;gap:12px;padding:14px 0;border-bottom:1px solid var(--c-line);font-size:15px;color:var(--c-text-2)}
.benefits li:last-child{border-bottom:0}
.benefits .tick{
  flex:0 0 22px;height:22px;border-radius:50%;background:rgba(198,242,78,.14);
  color:var(--c-lime);display:grid;place-items:center;font-size:12px;font-weight:900;margin-top:3px;
}
.benefits .tick b{color:var(--c-text);font-weight:700}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--c-line)}
.faq-list details{border-bottom:1px solid var(--c-line)}
.faq-list summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:16px;
  padding:22px 4px;font-size:17px;font-weight:700;color:var(--c-text);
  transition:background var(--t);
}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary:hover{background:rgba(255,255,255,.03)}
.faq-list summary .plus{
  margin-left:auto;flex:0 0 22px;height:22px;position:relative;transition:transform var(--t);
}
.faq-list summary .plus::before,.faq-list summary .plus::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:2px;
}
.faq-list summary .plus::before{left:0;right:0;top:10px;height:2px}
.faq-list summary .plus::after{top:0;bottom:0;left:10px;width:2px}
.faq-list details[open] summary .plus{transform:rotate(45deg)}
.faq-list .faq-body{padding:0 4px 24px;max-width:78ch}
.faq-list .faq-body p{font-size:15px;line-height:1.85}
.faq-list .faq-body ul{margin-top:10px}
.faq-list .faq-body li{
  position:relative;padding-left:16px;font-size:15px;color:var(--c-text-2);line-height:1.8;
}
.faq-list .faq-body li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--c-accent);
}
.faq-cta{
  margin-top:40px;display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
  border:1px solid var(--c-line);border-radius:var(--r-lg);background:var(--c-surface);padding:26px 28px;
}
.faq-cta h3{font-size:18px;margin-bottom:6px}
.faq-cta p{font-size:14px;color:var(--c-text-3)}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-bg-2);border-top:1px solid var(--c-line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--c-text-3);line-height:1.85;max-width:34ch}
.footer-col h4{font-size:14px;font-weight:800;letter-spacing:.06em;color:var(--c-text);margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--c-text-2);transition:var(--t)}
.footer-col a:hover{color:var(--c-primary);padding-left:4px}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--c-line);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:var(--c-text-3);
}
.footer-bottom .disclaimer{font-size:12px;color:var(--c-text-3);max-width:62ch;line-height:1.7}

/* ============ 滚动公告条底部 ============ */
.rule-strip{
  border:1px solid var(--c-line);border-left:3px solid var(--c-primary);
  background:var(--c-surface);border-radius:var(--r-sm);padding:16px 20px;
  display:flex;flex-wrap:wrap;gap:10px 24px;font-size:14px;color:var(--c-text-2);
}
.rule-strip span i{font-style:normal;color:var(--c-lime);font-family:var(--font-num);font-weight:700;margin-right:6px}

@media (max-width:1279px){
  .gallery{grid-template-columns:repeat(3,1fr)}
  .g-card:nth-child(6){grid-column:span 1}
}
@media (max-width:1023px){
  .container{padding:0 24px;max-width:960px}
  .section{padding:72px 0}
  .nav-menu{display:none}
  .nav-toggle{display:block}
  .nav{gap:16px}
  .feature-grid{grid-template-columns:1fr}
  .claim-wrap{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .gallery{grid-template-columns:repeat(2,1fr);grid-auto-rows:170px}
  .g-card:nth-child(1){grid-column:span 2;grid-row:span 1}
  .stats{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .hero{padding:64px 0 56px}
  .hero-actions .btn{flex:1 1 auto}
  .news-grid{grid-template-columns:1fr}
  .news-item--lead{grid-column:span 1;flex-direction:column;padding:18px}
  .news-item--lead .news-thumb{flex:0 0 auto;width:100%;aspect-ratio:16/9}
  .news-item{flex-direction:column}
  .news-thumb{flex:0 0 auto;width:100%}
  .topbar .container{gap:10px;flex-wrap:wrap;min-height:36px}
  .topbar .tb-link{display:none}
  .countdown .cd-sep{display:none}
  .countdown .cd-cell{min-width:28px;font-size:13px}
  .countdown .cd-label{display:none}
  .footer-grid{grid-template-columns:1fr}
  .faq-cta{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .stats{grid-template-columns:1fr 1fr}
  .stat{padding:16px}
  .stat .stat-num{font-size:24px}
  .gallery{grid-template-columns:1fr;grid-auto-rows:180px}
  .g-card:nth-child(1){grid-column:span 1}
  .logo-text{font-size:14px}
  .form-card,.benefits{padding:20px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: article */
/* ============ 设计变量 ============ */
:root{
  --c-bg:#0B0D12;
  --c-bg-2:#14161F;
  --c-surface:#1B1E29;
  --c-line:rgba(255,255,255,.07);
  --c-line-2:rgba(255,255,255,.14);
  --c-text:#F2F5FA;
  --c-text-2:#A7B0C0;
  --c-text-3:#6C7688;
  --c-primary:#FF6A1F;
  --c-primary-end:#FF9A3D;
  --c-accent:#17C3E8;
  --c-lime:#C6F24E;
  --c-danger:#FF5C5C;

  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-tag:6px;
  --r-pill:999px;

  --sh-card:0 8px 24px rgba(0,0,0,.35);
  --sh-hover:0 0 0 1px rgba(255,106,31,.45),0 10px 28px rgba(255,106,31,.28);
  --ease:.18s ease-out;

  --w-container:1200px;
  --pad-x:32px;
  --sec-y:96px;

  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:"SF Mono",ui-monospace,Menlo,Consolas,"Segoe UI Mono",monospace;
}

/* ============ reset / base ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-sans);
  font-size:15px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.drawer-open{overflow:hidden;}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),opacity var(--ease);}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;padding:0;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.02em;}

/* ============ 容器与排版 ============ */
.container{width:100%;max-width:var(--w-container);margin:0 auto;padding:0 var(--pad-x);}
.section{padding:var(--sec-y) 0;position:relative;}
.section--tight{padding:56px 0;}
.section--mid{background:var(--c-bg-2);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;border-radius:var(--r-tag);
  padding:5px 12px;border:1px solid var(--c-line-2);color:var(--c-accent);
  background:rgba(23,195,232,.07);
}
.sec-head{max-width:760px;margin-bottom:40px;}
.sec-head h2{font-size:clamp(22px,3.4vw,34px);font-weight:800;line-height:1.25;margin:16px 0 12px;}
.sec-head p{color:var(--c-text-2);font-size:16px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;line-height:1;white-space:nowrap;
  border:1px solid transparent;transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-end));
  color:#fff;box-shadow:0 8px 22px rgba(255,106,31,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(255,106,31,.45),0 12px 30px rgba(255,106,31,.34);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;color:var(--c-text);border:1px solid rgba(255,255,255,.18);
}
.btn-ghost:hover{border-color:var(--c-accent);color:#fff;transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;transition:none;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;color:var(--c-accent);font-weight:700;font-size:14px;
}
.link-arrow::after{content:"→";transition:transform var(--ease);}
.link-arrow:hover::after{transform:translateX(4px);}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.08em;padding:4px 10px;border-radius:var(--r-tag);
  border:1px solid var(--c-line-2);color:var(--c-text-2);background:rgba(255,255,255,.03);
}
.badge--cate{color:var(--c-accent);border-color:rgba(23,195,232,.4);background:rgba(23,195,232,.08);}
.badge--lime{color:var(--c-lime);border-color:rgba(198,242,78,.4);background:rgba(198,242,78,.08);}
.badge--rule{color:var(--c-text-3);}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(11,13,18,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 1px 0 rgba(255,106,31,.28),0 12px 30px rgba(0,0,0,.4);}
.nav{display:flex;align-items:center;gap:24px;height:68px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-end));
  color:#fff;font-weight:900;font-size:17px;
  box-shadow:0 6px 18px rgba(255,106,31,.3);
}
.logo-text{font-size:16px;font-weight:800;letter-spacing:.01em;color:var(--c-text);}
.logo-text em{font-style:normal;color:var(--c-primary);}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav-menu a{
  position:relative;display:inline-flex;align-items:center;height:68px;padding:0 14px;
  font-size:15px;color:var(--c-text-2);font-weight:600;
}
.nav-menu a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:16px;height:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform var(--ease);
}
.nav-menu a:hover{color:var(--c-text);}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a.is-active{color:#fff;}
.nav-menu a.is-active::after{transform:scaleX(1);}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--c-line-2);
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-text);border-radius:2px;transition:transform var(--ease),opacity var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ============ 移动端抽屉 ============ */
.drawer{
  position:fixed;inset:0;z-index:70;background:rgba(8,9,13,.97);
  display:flex;flex-direction:column;
  transform:translateY(-8px);opacity:0;visibility:hidden;
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
}
.drawer.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer-inner{padding:88px 24px 24px;overflow-y:auto;flex:1;}
.drawer-inner a{
  display:block;padding:16px 4px;font-size:18px;font-weight:700;color:var(--c-text-2);
  border-bottom:1px solid var(--c-line);
}
.drawer-inner a.is-active,.drawer-inner a:hover{color:var(--c-primary);}
.drawer-foot{padding:16px 24px 28px;border-top:1px solid var(--c-line);}
.drawer-foot .btn{width:100%;}

/* ============ 面包屑 ============ */
.crumb-bar{
  border-bottom:1px solid var(--c-line);
  background:linear-gradient(180deg,rgba(20,22,31,.9),rgba(11,13,18,.9));
}
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--c-text-3);padding:16px 0;min-height:52px;
}
.crumb a{color:var(--c-text-3);}
.crumb a:hover{color:var(--c-accent);}
.crumb .sep{color:var(--c-text-3);opacity:.6;}
.crumb .current{color:var(--c-text-2);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ============ 文章头部 ============ */
.article-head{
  position:relative;padding:56px 0 40px;
  background:
    radial-gradient(760px 320px at 88% -30%,rgba(255,106,31,.18),transparent 65%),
    linear-gradient(180deg,var(--c-bg-2),var(--c-bg));
  border-bottom:1px solid var(--c-line);
}
.article-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:22px 22px;opacity:.5;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.6),transparent 75%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.6),transparent 75%);
}
.article-head .container{position:relative;z-index:1;}
.article-head .badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px;}
.article-head h1{
  font-size:clamp(28px,5vw,48px);font-weight:900;line-height:1.15;
  letter-spacing:-.01em;max-width:900px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;
  margin-top:24px;font-size:13px;color:var(--c-text-3);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--c-text-3);opacity:.6;}
.article-meta .num{color:var(--c-text-2);}

/* ============ 正文阅读区 ============ */
.article-wrap{padding:56px 0 96px;}
.reader{
  max-width:800px;margin:0 auto;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:40px;box-shadow:var(--sh-card);
}
.article-body{font-size:16.5px;line-height:1.85;color:var(--c-text-2);word-break:break-word;}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  position:relative;font-size:clamp(20px,2.6vw,26px);font-weight:800;color:var(--c-text);
  line-height:1.35;margin:2em 0 .8em;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:2px;
  background:linear-gradient(180deg,var(--c-primary),var(--c-primary-end));
}
.article-body h3{font-size:19px;font-weight:700;color:var(--c-text);margin:1.8em 0 .7em;}
.article-body h4{font-size:16.5px;font-weight:700;color:var(--c-text);margin:1.6em 0 .6em;}
.article-body strong{color:var(--c-text);font-weight:700;}
.article-body a{color:var(--c-accent);border-bottom:1px solid rgba(23,195,232,.35);}
.article-body a:hover{color:#fff;border-bottom-color:var(--c-primary);}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.4em;list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin:.5em 0;}
.article-body li::marker{color:var(--c-primary);}
.article-body blockquote{
  margin:1.6em 0;padding:16px 20px;border-left:3px solid var(--c-accent);
  background:rgba(23,195,232,.07);border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--c-text-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-sm);margin:1.6em auto;max-width:100%;height:auto;}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{
  text-align:center;font-size:13px;color:var(--c-text-3);margin-top:10px;
}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:2em 0;}
.article-body code{
  font-family:var(--font-num);font-size:14px;background:var(--c-bg-2);
  border:1px solid var(--c-line);border-radius:6px;padding:2px 6px;color:var(--c-lime);
}
.article-body pre{
  background:var(--c-bg-2);border:1px solid var(--c-line);border-radius:var(--r-sm);
  padding:18px;overflow-x:auto;margin:1.6em 0;
}
.article-body pre code{background:none;border:0;padding:0;color:var(--c-text-2);}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:14.5px;
  display:block;overflow-x:auto;
}
.article-body th,.article-body td{
  border:1px solid var(--c-line);padding:12px 14px;text-align:left;white-space:nowrap;
}
.article-body th{background:rgba(255,255,255,.04);color:var(--c-text);font-weight:700;}
.article-body tr:nth-child(even) td{background:rgba(255,255,255,.015);}

/* 空态 */
.empty-state{
  display:flex;flex-direction:column;align-items:center;text-align:center;
  gap:14px;padding:56px 28px;border:1px dashed var(--c-line-2);border-radius:var(--r-lg);
  background:var(--c-surface);
}
.empty-state .ico{
  width:56px;height:56px;border-radius:16px;display:grid;place-items:center;font-size:24px;
  background:rgba(255,106,31,.12);color:var(--c-primary);border:1px solid rgba(255,106,31,.3);
}
.empty-state h3{font-size:20px;font-weight:800;color:var(--c-text);}
.empty-state p{color:var(--c-text-2);max-width:420px;font-size:15px;}

/* ============ 文末标签与返回 ============ */
.article-foot{
  max-width:800px;margin:28px auto 0;
  display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
  padding:20px 24px;background:var(--c-bg-2);border:1px solid var(--c-line);border-radius:var(--r-md);
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}
.foot-actions{display:flex;flex-wrap:wrap;gap:18px;}

/* ============ 相关推荐 ============ */
.related{padding:0 0 96px;}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  display:flex;flex-direction:column;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;
  box-shadow:var(--sh-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(255,106,31,.45);}
.card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--c-bg-2);}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.card:hover .thumb img{transform:scale(1.04);}
.card .thumb .tag{position:absolute;top:12px;left:12px;background:rgba(11,13,18,.78);backdrop-filter:blur(6px);}
.card .body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card h3{font-size:17px;font-weight:700;line-height:1.5;color:var(--c-text);}
.card p{font-size:14px;color:var(--c-text-2);line-height:1.75;}
.card .meta{margin-top:auto;font-size:13px;color:var(--c-text-3);display:flex;gap:14px;align-items:center;}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-bg-2);border-top:1px solid var(--c-line);padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--c-text-2);line-height:1.85;max-width:360px;}
.footer-col h4{font-size:14px;font-weight:800;color:var(--c-text);margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--c-text-2);}
.footer-col a:hover{color:var(--c-primary);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;
  font-size:13px;color:var(--c-text-3);
}
.footer-bottom .disclaimer{max-width:640px;line-height:1.7;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--w-container:960px;}
}
@media (max-width:1023px){
  :root{--w-container:720px;--sec-y:72px;--pad-x:24px;}
  .nav-menu{display:none;}
  .nav-toggle{display:flex;}
  .nav{height:56px;}
  .nav-menu a{height:56px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .related-grid{grid-template-columns:1fr 1fr;}
  .reader{padding:32px;}
}
@media (max-width:767px){
  :root{--sec-y:56px;--pad-x:20px;}
  .article-head{padding:40px 0 32px;}
  .article-wrap{padding:40px 0 64px;}
  .reader{padding:20px;border-radius:var(--r-md);}
  .article-body{font-size:15px;}
  .related{padding-bottom:64px;}
  .related-grid{grid-template-columns:1fr;}
  .article-foot{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .crumb .current{max-width:36ch;}
}
@media (max-width:479px){
  .logo-text{font-size:15px;}
  .article-head h1{font-size:26px;}
  .btn{padding:0 18px;font-size:14px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
}

/* roulang page: category1 */
:root{
  --c-bg:#0B0D12;
  --c-bg-2:#14161F;
  --c-surface:#1B1E29;
  --c-line:rgba(255,255,255,.07);
  --c-line-2:rgba(255,255,255,.14);
  --c-text:#F2F5FA;
  --c-text-2:#A7B0C0;
  --c-text-3:#6C7688;
  --c-primary:#FF6A1F;
  --c-primary-end:#FF9A3D;
  --c-accent:#17C3E8;
  --c-lime:#C6F24E;
  --c-danger:#FF5C5C;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-tag:6px;
  --sp-1:8px;--sp-2:12px;--sp-3:16px;--sp-4:24px;--sp-5:32px;--sp-6:48px;--sp-7:64px;--sp-8:96px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-hover:0 0 0 1px rgba(255,106,31,.45),0 10px 28px rgba(255,106,31,.28);
  --ease:.18s ease-out;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
input,button,textarea{font-size:inherit}
::selection{background:rgba(255,106,31,.35)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-alt{background:var(--c-bg-2);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section-head{max-width:760px;margin-bottom:var(--sp-6)}
.section-head h2{font-size:clamp(22px,3.4vw,34px);font-weight:800;margin-bottom:var(--sp-2)}
.section-head p{color:var(--c-text-2);font-size:16px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;color:var(--c-accent);text-transform:uppercase;margin-bottom:var(--sp-3);font-weight:700}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--c-primary);display:block}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(11,13,18,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-line);
  transition:height var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.site-header.is-scrolled{box-shadow:0 1px 0 rgba(255,106,31,.35),0 10px 24px rgba(0,0,0,.45)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px;gap:var(--sp-4);transition:height var(--ease)}
.site-header.is-scrolled .nav{height:60px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-end));
  color:#14161F;font-weight:900;font-size:17px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(255,106,31,.35);
  transform:rotate(-6deg);
}
.logo-text{font-size:17px;font-weight:800;letter-spacing:.02em;white-space:nowrap}
.logo-text em{font-style:normal;color:var(--c-primary);margin-left:2px}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-menu a{
  position:relative;padding:10px 14px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;color:var(--c-text-2);
  transition:color var(--ease),background var(--ease);
}
.nav-menu a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--c-primary);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform var(--ease);
}
.nav-menu a:hover{color:var(--c-text);background:rgba(255,255,255,.04)}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.is-active{color:#fff}
.nav-menu a.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:var(--sp-2)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  background:transparent;border:1px solid var(--c-line-2);
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-text);border-radius:2px;transition:transform var(--ease),opacity var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* drawer */
.drawer{
  display:none;position:fixed;left:0;right:0;top:56px;bottom:0;z-index:90;
  background:var(--c-bg);border-top:1px solid var(--c-line);
  padding:24px 20px 120px;overflow-y:auto;flex-direction:column;gap:6px;
  transform:translateY(-12px);opacity:0;visibility:hidden;
  transition:transform .22s ease-out,opacity .22s ease-out,visibility .22s;
}
.drawer.is-open{transform:none;opacity:1;visibility:visible}
.drawer a.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 16px;border-radius:var(--r-sm);
  background:var(--c-bg-2);border:1px solid var(--c-line);
  font-size:16px;font-weight:600;color:var(--c-text);
}
.drawer a.drawer-link.is-active{color:var(--c-primary);border-color:rgba(255,106,31,.45)}
.drawer-cta{margin-top:var(--sp-4)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:700;letter-spacing:.01em;white-space:nowrap;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
}
.btn-sm{min-height:40px;padding:0 20px;font-size:14px}
.btn-primary{background:linear-gradient(135deg,var(--c-primary),var(--c-primary-end));color:#fff;box-shadow:0 8px 20px rgba(255,106,31,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(255,106,31,.42)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:transparent;border-color:rgba(255,255,255,.18);color:#fff}
.btn-outline:hover{border-color:var(--c-accent);color:var(--c-accent);transform:translateY(-2px)}
.btn-outline:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--c-accent);padding:0 6px;min-height:44px}
.btn-ghost .arrow{transition:transform var(--ease)}
.btn-ghost:hover .arrow{transform:translateX(4px)}
.btn[disabled],.btn:disabled{opacity:.45;cursor:not-allowed;transform:none!important;box-shadow:none}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:8px}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:700;letter-spacing:.08em;
  padding:4px 10px;border-radius:var(--r-tag);border:1px solid;
  font-variant-numeric:tabular-nums;
}
.badge-accent{color:var(--c-accent);border-color:rgba(23,195,232,.4);background:rgba(23,195,232,.08)}
.badge-lime{color:var(--c-lime);border-color:rgba(198,242,78,.4);background:rgba(198,242,78,.08)}
.badge-plain{color:var(--c-text-3);border-color:var(--c-line-2);background:rgba(255,255,255,.03)}
.badge-primary{color:#FFC79A;border-color:rgba(255,106,31,.45);background:rgba(255,106,31,.12)}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  min-height:290px;display:flex;align-items:flex-end;
  padding:96px 0 44px;
  background-image:linear-gradient(90deg,rgba(11,13,18,.94) 0%,rgba(11,13,18,.72) 55%,rgba(11,13,18,.55) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--c-line);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:16px 16px;opacity:.5;
  mask-image:linear-gradient(180deg,transparent,#000 70%);
  -webkit-mask-image:linear-gradient(180deg,transparent,#000 70%);
}
.page-hero .container{position:relative;z-index:2}
.page-hero h1{font-size:clamp(28px,5vw,48px);font-weight:900;line-height:1.15;margin:var(--sp-3) 0 var(--sp-3);max-width:16em}
.page-hero p.lead{color:var(--c-text-2);font-size:17px;max-width:640px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3);flex-wrap:wrap}
.breadcrumb a{color:var(--c-text-2);transition:color var(--ease)}
.breadcrumb a:hover{color:var(--c-accent)}
.breadcrumb .sep{color:var(--c-text-3);opacity:.6}
.breadcrumb .current{color:var(--c-text);max-width:260px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- stat bar ---------- */
.stat-bar{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:1px;background:var(--c-line);border:1px solid var(--c-line);
  border-radius:var(--r-md);overflow:hidden;margin-top:var(--sp-5);
}
.stat-bar .stat{background:rgba(20,22,31,.86);padding:20px 22px}
.stat .num{font-size:26px;font-weight:900;color:var(--c-lime);font-variant-numeric:tabular-nums;letter-spacing:.02em;line-height:1.2}
.stat .label{font-size:13px;color:var(--c-text-3);margin-top:4px}

/* ---------- overview cards ---------- */
.overview{display:grid;grid-template-columns:1.45fr 1fr;gap:var(--sp-4);align-items:stretch}
.card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-md);box-shadow:var(--shadow-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(255,106,31,.35)}
.overview-main{overflow:hidden;display:flex;flex-direction:column}
.overview-main .thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.overview-main .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out}
.overview-main:hover .thumb img{transform:scale(1.04)}
.overview-main .thumb .tag{position:absolute;left:16px;top:16px}
.overview-main .body{padding:24px 26px 28px}
.overview-main .body h3{font-size:22px;font-weight:800;margin-bottom:10px}
.overview-main .body p{color:var(--c-text-2);font-size:15px}
.overview-side{display:grid;grid-template-rows:1fr 1fr;gap:var(--sp-4)}
.mini-card{padding:22px 24px;display:flex;flex-direction:column;gap:8px;justify-content:center}
.mini-card h3{font-size:18px;font-weight:700}
.mini-card p{font-size:14px;color:var(--c-text-2)}
.mini-card .mini-icon{
  width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:rgba(255,106,31,.12);color:var(--c-primary);font-weight:900;font-size:16px;
  border:1px solid rgba(255,106,31,.3);
}

/* ---------- clause list ---------- */
.clause-group{margin-bottom:var(--sp-7)}
.clause-group:last-child{margin-bottom:0}
.clause-group > h2{
  font-size:clamp(20px,2.6vw,26px);font-weight:800;
  padding-left:14px;border-left:4px solid var(--c-primary);
  margin-bottom:var(--sp-4);
}
.clause-group > .group-note{color:var(--c-text-3);font-size:14px;margin:-8px 0 var(--sp-4) 18px}
.clause-list{border-top:1px solid var(--c-line)}
.clause{
  display:grid;grid-template-columns:72px minmax(0,1fr);gap:var(--sp-4);
  padding:24px 18px 24px 8px;border-bottom:1px solid var(--c-line);
  transition:background var(--ease),border-color var(--ease);
}
.clause:hover{background:rgba(255,255,255,.03);border-bottom-color:rgba(255,106,31,.28)}
.clause-num{
  font-size:22px;font-weight:900;color:var(--c-primary);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;line-height:1.4;
}
.clause-body h3{font-size:18px;font-weight:700;margin-bottom:8px}
.clause-body p{color:var(--c-text-2);font-size:15px}
.clause-body p + p{margin-top:8px}
.clause-body .inline-tags{margin-top:12px;display:flex;flex-wrap:wrap;gap:8px}

/* ---------- exclude list ---------- */
.exclude-wrap{display:grid;grid-template-columns:1fr 1fr;gap:var(--sp-4)}
.exclude-card{padding:26px 28px}
.exclude-card h3{font-size:19px;font-weight:700;margin-bottom:var(--sp-3);display:flex;align-items:center;gap:10px}
.exclude-card h3 .dot{width:8px;height:8px;border-radius:2px;background:var(--c-danger);display:block;transform:rotate(45deg)}
.exclude-list li{
  display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--c-line);
  font-size:15px;color:var(--c-text-2);
}
.exclude-list li:last-child{border-bottom:none}
.exclude-list li::before{
  content:"×";flex:0 0 auto;color:var(--c-danger);font-weight:900;line-height:1.8;
}
.exclude-list.good li::before{content:"✓";color:var(--c-lime)}
.exclude-list.good li{color:var(--c-text-2)}

/* ---------- notice strip ---------- */
.notice{
  display:flex;gap:16px;align-items:flex-start;
  background:linear-gradient(90deg,rgba(255,106,31,.14),rgba(255,106,31,0));
  border:1px solid rgba(255,106,31,.32);border-left:4px solid var(--c-primary);
  border-radius:var(--r-md);padding:20px 24px;margin-top:var(--sp-5);
}
.notice .n-icon{color:var(--c-primary);font-weight:900;font-size:18px;line-height:1.5}
.notice p{font-size:15px;color:var(--c-text-2)}
.notice strong{color:var(--c-text)}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--c-line);max-width:920px}
.accordion-item{border-bottom:1px solid var(--c-line)}
.accordion-head{
  width:100%;background:transparent;border:none;color:var(--c-text);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 12px;text-align:left;font-size:17px;font-weight:700;
  transition:background var(--ease),color var(--ease);
}
.accordion-head:hover{background:rgba(255,255,255,.03);color:var(--c-accent)}
.accordion-head .plus{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  border:1px solid var(--c-line-2);position:relative;transition:transform .2s ease-out,border-color var(--ease);
}
.accordion-head .plus::before,
.accordion-head .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-accent);
  transform:translate(-50%,-50%);
}
.accordion-head .plus::before{width:12px;height:2px}
.accordion-head .plus::after{width:2px;height:12px}
.accordion-item.is-open .plus{transform:rotate(45deg);border-color:rgba(255,106,31,.5)}
.accordion-panel{max-height:0;overflow:hidden;transition:max-height .2s ease-out}
.accordion-panel .inner{padding:0 12px 24px;color:var(--c-text-2);font-size:15px;max-width:74ch}
.accordion-item.is-open .accordion-panel{max-height:420px}

/* ---------- cta ---------- */
.cta-panel{
  position:relative;overflow:hidden;
  border:1px solid var(--c-line);border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(255,106,31,.16),rgba(20,22,31,.9) 55%),var(--c-bg-2);
  padding:48px 48px;display:flex;align-items:center;justify-content:space-between;gap:var(--sp-5);flex-wrap:wrap;
}
.cta-panel::before{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,106,31,.35),transparent 66%);pointer-events:none;
}
.cta-panel .cta-text{position:relative;z-index:2;max-width:640px}
.cta-panel h2{font-size:clamp(22px,3vw,30px);font-weight:800;margin-bottom:10px}
.cta-panel p{color:var(--c-text-2);font-size:15px}
.cta-actions{position:relative;z-index:2;display:flex;gap:var(--sp-3);flex-wrap:wrap}
.back-row{margin-top:var(--sp-4);display:flex;align-items:center;justify-content:space-between;gap:var(--sp-3);flex-wrap:wrap;font-size:14px;color:var(--c-text-3)}

/* ---------- footer ---------- */
.site-footer{background:var(--c-bg-2);border-top:1px solid var(--c-line);padding:var(--sp-7) 0 var(--sp-4);margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:var(--sp-5)}
.footer-brand p{color:var(--c-text-2);font-size:14px;margin-top:var(--sp-3);max-width:34ch}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--c-text);margin-bottom:var(--sp-3)}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:14px;color:var(--c-text-2);transition:color var(--ease)}
.footer-col ul li a:hover{color:var(--c-accent)}
.footer-bottom{
  margin-top:var(--sp-6);padding-top:var(--sp-4);border-top:1px solid var(--c-line);
  display:flex;justify-content:space-between;gap:var(--sp-3);flex-wrap:wrap;
  font-size:13px;color:var(--c-text-3);
}
.footer-bottom .disclaimer{max-width:60ch}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{max-width:1140px}
}
@media (max-width:1023px){
  .container{max-width:960px}
  .nav-menu{display:none}
  .nav-toggle{display:flex}
  .drawer{display:flex}
  .section{padding:72px 0}
  .overview{grid-template-columns:1fr}
  .overview-side{grid-template-rows:none;grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:var(--sp-5)}
}
@media (max-width:767px){
  .container{max-width:720px;padding:0 20px}
  .section{padding:56px 0}
  .page-hero{min-height:250px;padding:80px 0 32px}
  .page-hero h1{margin:var(--sp-2) 0}
  .page-hero p.lead{font-size:15px}
  .stat-bar{grid-template-columns:1fr 1fr}
  .clause{grid-template-columns:52px minmax(0,1fr);gap:var(--sp-3);padding:20px 12px 20px 4px}
  .clause-num{font-size:19px}
  .exclude-wrap{grid-template-columns:1fr}
  .cta-panel{padding:32px 24px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:var(--sp-4)}
  .logo-text{font-size:15px}
  .nav{height:56px}
  .site-header.is-scrolled .nav{height:52px}
  .drawer{top:56px}
}
@media (max-width:480px){
  .stat-bar{grid-template-columns:1fr}
  .overview-side{grid-template-columns:1fr}
  .accordion-head{font-size:16px;padding:18px 8px}
  .badge{font-size:11px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category2 */
:root{
  --c-bg:#0B0D12;
  --c-bg-2:#14161F;
  --c-surface:#1B1E29;
  --c-line:rgba(255,255,255,.07);
  --c-text:#F2F5FA;
  --c-text-2:#A7B0C0;
  --c-text-3:#6C7688;
  --c-primary:#FF6A1F;
  --c-primary-end:#FF9A3D;
  --c-accent:#17C3E8;
  --c-lime:#C6F24E;
  --c-danger:#FF5C5C;

  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-tag:6px;

  --sh-card:0 8px 24px rgba(0,0,0,.35);
  --sh-hover:0 0 0 1px rgba(255,106,31,.45),0 10px 28px rgba(255,106,31,.28);

  --sp-1:8px; --sp-2:12px; --sp-3:16px; --sp-4:24px; --sp-5:32px; --sp-6:48px; --sp-7:64px; --sp-8:96px;

  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"SF Mono",ui-monospace,"JetBrains Mono",Menlo,Consolas,monospace;

  --nav-h:68px;
  --ease:.18s ease-out;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.is-locked{overflow:hidden;}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-accent);text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease),transform var(--ease);}
a:hover{color:var(--c-primary-end);}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;font-size:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:800;color:var(--c-text);line-height:1.3;}
p{margin:0;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}

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

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;
  border-radius:999px;font-size:15px;font-weight:700;letter-spacing:.02em;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease),background var(--ease),color var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-end));
  color:#fff;box-shadow:0 6px 18px rgba(255,106,31,.28);
}
.btn-primary:hover{transform:translateY(-2px);color:#fff;box-shadow:0 10px 26px rgba(255,106,31,.42);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;color:var(--c-text);border:1px solid rgba(255,255,255,.18);
}
.btn-ghost:hover{border-color:var(--c-accent);color:var(--c-text);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--c-accent);font-weight:700;font-size:15px;
}
.btn-link i{transition:transform var(--ease);}
.btn-link:hover{color:var(--c-primary-end);}
.btn-link:hover i{transform:translateX(4px);}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;box-shadow:none;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:var(--r-tag);
  font-size:12px;letter-spacing:.08em;font-weight:700;line-height:1.6;
  border:1px solid transparent;
}
.badge-accent{color:var(--c-accent);border-color:rgba(23,195,232,.4);background:rgba(23,195,232,.08);}
.badge-lime{color:var(--c-lime);border-color:rgba(198,242,78,.35);background:rgba(198,242,78,.08);}
.badge-mute{color:var(--c-text-3);border-color:rgba(255,255,255,.12);background:rgba(255,255,255,.02);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(11,13,18,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-line);
  transition:height var(--ease),box-shadow var(--ease),background var(--ease);
}
.site-header .nav{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:var(--nav-h);
  transition:height var(--ease);
}
.site-header.is-shrank{box-shadow:0 1px 0 rgba(255,106,31,.28),0 10px 30px rgba(0,0,0,.45);}
.site-header.is-shrank .nav{height:60px;}

.logo{display:inline-flex;align-items:center;gap:10px;color:var(--c-text);}
.logo:hover{color:var(--c-text);}
.logo-mark{
  display:grid;place-items:center;width:34px;height:34px;flex:0 0 34px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-end));
  color:#fff;font-weight:900;font-size:17px;
  box-shadow:0 4px 14px rgba(255,106,31,.35);
}
.logo-text{font-size:16px;font-weight:800;letter-spacing:.02em;line-height:1.2;}
.logo-text em{font-style:normal;color:var(--c-primary-end);margin-left:2px;}

.nav-menu{display:flex;align-items:center;gap:6px;}
.nav-menu a{
  position:relative;display:inline-flex;align-items:center;
  height:38px;padding:0 14px;border-radius:10px;
  font-size:15px;font-weight:600;color:var(--c-text-2);
  transition:color var(--ease),background var(--ease);
}
.nav-menu a:hover{color:var(--c-text);background:rgba(255,255,255,.04);}
.nav-menu a.is-active{color:#fff;}
.nav-menu a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-primary-end));
}
.nav-actions{display:flex;align-items:center;gap:12px;}

.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid rgba(255,255,255,.14);
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
  transition:border-color var(--ease),background var(--ease);
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-text);transition:transform var(--ease),opacity var(--ease);}
.nav-toggle:hover{border-color:var(--c-accent);}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.nav-drawer{
  position:fixed;inset:var(--nav-h) 0 0 0;z-index:79;
  background:rgba(11,13,18,.97);
  backdrop-filter:blur(10px);
  transform:translateX(100%);
  transition:transform .22s ease-out;
  overflow-y:auto;
  padding:20px 20px 120px;
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-inner{display:flex;flex-direction:column;gap:8px;max-width:520px;margin:0 auto;}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 18px;border-radius:12px;
  border:1px solid var(--c-line);background:var(--c-bg-2);
  color:var(--c-text-2);font-weight:600;
}
.drawer-link:hover{color:#fff;border-color:rgba(255,106,31,.4);}
.drawer-link.is-active{color:#fff;border-color:rgba(255,106,31,.55);background:rgba(255,106,31,.08);}
.drawer-cta{margin-top:12px;width:100%;}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:72px 0 56px;
  background:
    radial-gradient(circle at 1px 1px,rgba(255,255,255,.10) 1px,transparent 0) 0 0/22px 22px,
    radial-gradient(720px 340px at 82% -10%,rgba(255,106,31,.20),transparent 65%),
    linear-gradient(180deg,var(--c-bg-2),var(--c-bg));
  border-bottom:1px solid var(--c-line);
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:3px;
  background:linear-gradient(90deg,var(--c-primary),rgba(255,154,61,.35) 45%,transparent 78%);
}
.hero-bar{width:64px;height:4px;border-radius:4px;background:linear-gradient(90deg,var(--c-primary),var(--c-lime));margin-bottom:22px;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3);margin-bottom:18px;flex-wrap:wrap;}
.crumb a{color:var(--c-text-3);}
.crumb a:hover{color:var(--c-accent);}
.crumb span{color:var(--c-text-3);}
.hero-title{
  font-size:clamp(28px,5vw,48px);font-weight:900;line-height:1.15;letter-spacing:-.01em;
  max-width:16em;
}
.hero-title strong{
  background:linear-gradient(120deg,var(--c-primary),var(--c-primary-end));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{margin-top:18px;max-width:760px;color:var(--c-text-2);font-size:17px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}

/* ---------- 数据条 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  margin-top:40px;
  background:var(--c-line);
  border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;
}
.stat{background:var(--c-bg-2);padding:20px 22px;}
.stat b{
  display:block;font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:30px;font-weight:800;color:var(--c-lime);line-height:1.2;
}
.stat span{display:block;margin-top:4px;font-size:13px;color:var(--c-text-3);letter-spacing:.04em;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section-alt{background:var(--c-bg-2);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;font-weight:700;color:var(--c-primary-end);
  text-transform:uppercase;margin-bottom:14px;
}
.section-head .eyebrow::before{content:"";width:20px;height:2px;border-radius:2px;background:var(--c-primary);}
.section-title{font-size:clamp(22px,3.4vw,34px);font-weight:800;}
.section-desc{margin-top:14px;color:var(--c-text-2);font-size:16px;}

/* ---------- 筛选标签 ---------- */
.filter-bar{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;
  padding:16px;margin-bottom:32px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
}
.filter-label{font-size:13px;color:var(--c-text-3);margin-right:4px;letter-spacing:.06em;}
.filter-tag{
  display:inline-flex;align-items:center;min-height:38px;padding:0 16px;
  border-radius:999px;border:1px solid rgba(255,255,255,.14);
  background:var(--c-bg-2);color:var(--c-text-2);font-size:14px;font-weight:600;
  transition:all var(--ease);
}
.filter-tag:hover{border-color:var(--c-accent);color:var(--c-text);transform:translateY(-2px);}
.filter-tag.is-active{
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-end));
  border-color:transparent;color:#fff;box-shadow:0 6px 16px rgba(255,106,31,.3);
}

/* ---------- 图墙 ---------- */
.gallery-wall{columns:3;column-gap:24px;}
.gallery-card{
  break-inside:avoid;
  margin:0 0 24px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  overflow:hidden;
  box-shadow:var(--sh-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.gallery-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(255,106,31,.4);}
.gallery-card.is-hidden{display:none;}
.gc-media{position:relative;overflow:hidden;background:var(--c-bg-2);}
.gc-media img{width:100%;height:100%;object-fit:cover;transition:transform var(--ease);}
.gallery-card:hover .gc-media img{transform:scale(1.04);}
.ratio-169{aspect-ratio:16/9;}
.ratio-45{aspect-ratio:4/5;}
.ratio-11{aspect-ratio:1/1;}
.ratio-32{aspect-ratio:3/2;}
.gc-cat{
  position:absolute;left:12px;top:12px;
  padding:3px 9px;border-radius:var(--r-tag);
  font-size:12px;font-weight:700;letter-spacing:.06em;
  background:rgba(11,13,18,.78);color:var(--c-accent);
  border:1px solid rgba(23,195,232,.4);
  backdrop-filter:blur(6px);
}
.gc-no{
  position:absolute;right:12px;bottom:12px;
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:12px;font-weight:700;letter-spacing:.1em;
  color:#fff;padding:3px 9px;border-radius:var(--r-tag);
  background:linear-gradient(135deg,rgba(255,106,31,.92),rgba(255,154,61,.92));
}
.gc-body{padding:20px;}
.gc-title{font-size:18px;font-weight:700;line-height:1.4;}
.gc-desc{margin-top:8px;font-size:14px;color:var(--c-text-2);line-height:1.75;}
.gc-foot{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:16px;padding-top:14px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-text-3);
}
.gc-foot .go{color:var(--c-accent);font-weight:700;display:inline-flex;align-items:center;gap:6px;}
.gc-foot .go i{transition:transform var(--ease);}
.gallery-card:hover .gc-foot .go i{transform:translateX(4px);}

.empty-note{
  display:none;flex-direction:column;align-items:center;gap:12px;
  padding:56px 24px;text-align:center;
  background:var(--c-surface);border:1px dashed rgba(255,255,255,.14);border-radius:var(--r-md);
  color:var(--c-text-2);
}
.empty-note.is-show{display:flex;}
.empty-note i{font-size:28px;color:var(--c-primary-end);}

/* ---------- 版本节奏横滚 ---------- */
.rail-wrap{position:relative;}
.rail{
  display:flex;gap:20px;overflow-x:auto;padding:4px 4px 20px;
  scroll-snap-type:x mandatory;
  scrollbar-width:thin;
}
.rail::-webkit-scrollbar{height:8px;}
.rail::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:8px;}
.rail-card{
  flex:0 0 300px;scroll-snap-align:start;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:22px;box-shadow:var(--sh-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(255,106,31,.4);}
.rail-card .rc-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.rail-card .rc-no{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:13px;color:var(--c-text-3);letter-spacing:.1em;}
.rail-card h3{font-size:17px;font-weight:700;}
.rail-card p{margin-top:10px;font-size:14px;color:var(--c-text-2);line-height:1.75;}
.rail-card .rc-line{height:3px;border-radius:3px;margin-top:16px;background:linear-gradient(90deg,var(--c-primary),var(--c-lime));width:48px;}

/* ---------- 重点解读错落 ---------- */
.feature-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;align-items:stretch;}
.feature-main{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  border:1px solid var(--c-line);background:var(--c-surface);box-shadow:var(--sh-card);
  display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.feature-main:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(255,106,31,.4);}
.feature-main .fm-media{position:relative;aspect-ratio:16/9;overflow:hidden;}
.feature-main .fm-media img{width:100%;height:100%;object-fit:cover;transition:transform var(--ease);}
.feature-main:hover .fm-media img{transform:scale(1.04);}
.fm-body{padding:28px;}
.fm-body h3{font-size:24px;font-weight:800;}
.fm-body p{margin-top:12px;color:var(--c-text-2);font-size:15px;}
.fm-list{margin-top:18px;display:grid;gap:10px;}
.fm-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--c-text-2);}
.fm-list i{color:var(--c-lime);margin-top:5px;font-size:14px;}
.feature-side{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.feature-side .fs-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--sh-card);
  display:flex;flex-direction:column;gap:12px;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.feature-side .fs-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(255,106,31,.4);}
.feature-side h3{font-size:19px;font-weight:700;}
.feature-side p{font-size:14px;color:var(--c-text-2);}
.feature-side .fs-icon{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:rgba(23,195,232,.1);color:var(--c-accent);font-size:18px;
  border:1px solid rgba(23,195,232,.28);
}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 6px;text-align:left;
  font-size:17px;font-weight:700;color:var(--c-text);
  transition:background var(--ease),color var(--ease);
}
.faq-q:hover{background:rgba(255,255,255,.03);color:#fff;}
.faq-icon{
  position:relative;flex:0 0 22px;width:22px;height:22px;
  transition:transform .2s ease-out;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-primary-end);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .2s ease-out;}
.faq-item.is-open .faq-a{grid-template-rows:1fr;}
.faq-a-inner{overflow:hidden;}
.faq-a-inner p{padding:0 6px 24px;color:var(--c-text-2);font-size:15px;max-width:900px;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid rgba(255,106,31,.3);
  background:
    radial-gradient(600px 260px at 88% 0%,rgba(255,106,31,.24),transparent 68%),
    linear-gradient(135deg,var(--c-surface),var(--c-bg-2));
  padding:48px 40px;
  display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:center;
  box-shadow:var(--sh-card);
}
.cta-band h2{font-size:clamp(22px,3.4vw,30px);font-weight:800;}
.cta-band p{margin-top:14px;color:var(--c-text-2);font-size:15px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}
.cta-mini{display:flex;flex-wrap:wrap;gap:18px;margin-top:22px;font-size:13px;color:var(--c-text-3);}
.cta-mini span{display:inline-flex;align-items:center;gap:8px;}
.cta-mini i{color:var(--c-lime);}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-bg-2);
  border-top:1px solid var(--c-line);
  padding:64px 0 32px;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:40px;border-bottom:1px solid var(--c-line);
}
.footer-brand p{margin-top:18px;color:var(--c-text-2);font-size:14px;line-height:1.85;max-width:34em;}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:18px;color:var(--c-text);letter-spacing:.04em;}
.footer-col ul{display:grid;gap:12px;}
.footer-col a{color:var(--c-text-2);font-size:14px;}
.footer-col a:hover{color:var(--c-primary-end);}
.footer-bottom{
  display:flex;align-items:flex-start;justify-content:space-between;gap:24px;
  padding-top:28px;font-size:13px;color:var(--c-text-3);flex-wrap:wrap;
}
.footer-bottom .disclaimer{max-width:60em;line-height:1.8;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .gallery-wall{columns:3;}
}
@media (max-width:1023px){
  .container{padding:0 24px;max-width:960px;}
  .nav-menu{display:none;}
  .nav-toggle{display:flex;}
  .section{padding:72px 0;}
  .gallery-wall{columns:2;}
  .feature-grid{grid-template-columns:1fr;}
  .cta-band{grid-template-columns:1fr;padding:36px 28px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  :root{--nav-h:56px;}
  .section{padding:56px 0;}
  .page-hero{padding:52px 0 44px;}
  .hero-sub{font-size:15px;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .gallery-wall{columns:1;}
  .gallery-wall{column-gap:0;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;}
  .faq-q{font-size:16px;padding:18px 4px;}
  .nav-actions .btn-sm{display:none;}
}
@media (max-width:520px){
  .hero-title{font-size:clamp(26px,7vw,32px);}
  .stat b{font-size:24px;}
  .filter-bar{padding:12px;gap:8px;}
  .filter-tag{min-height:36px;padding:0 12px;font-size:13px;}
  .logo-text{font-size:15px;}
  .rail-card{flex:0 0 260px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
}

/* roulang page: category3 */
:root{
  --c-bg:#0B0D12;
  --c-bg-2:#14161F;
  --c-surface:#1B1E29;
  --c-line:rgba(255,255,255,.07);
  --c-text:#F2F5FA;
  --c-text-2:#A7B0C0;
  --c-text-3:#6C7688;
  --c-primary:#FF6A1F;
  --c-primary-end:#FF9A3D;
  --c-accent:#17C3E8;
  --c-lime:#C6F24E;
  --c-danger:#FF5C5C;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-tag:6px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-hover:0 0 0 1px rgba(255,106,31,.45),0 10px 28px rgba(255,106,31,.28);
  --ease:.18s ease-out;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),background var(--ease),opacity var(--ease)}
button,input{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{list-style:none}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}
::selection{background:rgba(255,106,31,.35);color:#fff}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0;border-top:1px solid var(--c-line)}
.section-alt{background:var(--c-bg-2)}
.section-head{margin-bottom:40px;max-width:760px}
.section-head h2{font-size:clamp(22px,3.4vw,34px);font-weight:800;line-height:1.3;letter-spacing:-.01em}
.section-head p{color:var(--c-text-2);font-size:16px;margin-top:12px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;color:var(--c-accent);text-transform:uppercase;font-weight:700;margin-bottom:14px}
.eyebrow::before{content:"";width:22px;height:2px;background:linear-gradient(90deg,var(--c-primary),var(--c-lime));border-radius:2px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:999px;font-weight:700;font-size:15px;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),opacity var(--ease);
  white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,var(--c-primary),var(--c-primary-end));color:#fff;box-shadow:0 8px 22px rgba(255,106,31,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(255,106,31,.42)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border:1px solid rgba(255,255,255,.18);color:var(--c-text)}
.btn-ghost:hover{border-color:var(--c-accent);color:#fff;transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;transform:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--c-accent);font-weight:600;font-size:15px}
.link-arrow::after{content:"→";transition:transform var(--ease)}
.link-arrow:hover::after{transform:translateX(4px)}

/* ============ 徽章 / 标签 ============ */
.badge{display:inline-block;font-size:12px;letter-spacing:.08em;padding:4px 10px;border-radius:var(--r-tag);border:1px solid currentColor;line-height:1.6}
.badge-accent{color:var(--c-accent)}
.badge-lime{color:var(--c-lime)}
.badge-muted{color:var(--c-text-3)}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(11,13,18,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-line);
  transition:background var(--ease),box-shadow var(--ease);
}
.site-header.is-scrolled{background:rgba(11,13,18,.92);box-shadow:0 1px 0 rgba(255,106,31,.28),0 12px 30px rgba(0,0,0,.4)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px;transition:height var(--ease)}
.site-header.is-scrolled .nav{height:60px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-end));
  color:#fff;font-weight:900;font-size:17px;letter-spacing:0;
  box-shadow:0 6px 16px rgba(255,106,31,.32);
}
.logo-text{font-size:17px;font-weight:800;letter-spacing:.01em;color:var(--c-text);line-height:1.2}
.logo-text em{font-style:normal;color:var(--c-primary)}
.nav-menu{display:flex;align-items:center;gap:6px;flex:1;justify-content:center}
.nav-menu a{
  position:relative;padding:9px 15px;border-radius:999px;font-size:15px;color:var(--c-text-2);font-weight:500;
}
.nav-menu a:hover{color:var(--c-text);background:rgba(255,255,255,.05)}
.nav-menu a.is-active{color:#fff;font-weight:700}
.nav-menu a.is-active::after{
  content:"";position:absolute;left:15px;right:15px;bottom:-2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-primary-end));
}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--c-line);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-text);border-radius:2px;transition:transform var(--ease),opacity var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ 移动抽屉 ============ */
.drawer{
  position:fixed;inset:0;z-index:65;padding:92px 24px 40px;
  background:rgba(11,13,18,.98);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  display:flex;flex-direction:column;gap:6px;overflow-y:auto;
  opacity:0;visibility:hidden;transform:translateY(-14px);
  transition:opacity .24s ease-out,transform .24s ease-out,visibility .24s;
}
.drawer.is-open{opacity:1;visibility:visible;transform:none}
.drawer a.d-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 18px;border-radius:var(--r-sm);border:1px solid var(--c-line);
  background:var(--c-surface);font-size:17px;font-weight:600;min-height:44px;
}
.drawer a.d-link:hover,.drawer a.d-link.is-active{border-color:rgba(255,106,31,.5);color:#fff}
.drawer a.d-link.is-active{background:rgba(255,106,31,.12)}
.drawer .d-cta{margin-top:18px}
.drawer .d-cta .btn{width:100%}

/* ============ 内页页头 ============ */
.page-hero{
  position:relative;overflow:hidden;
  min-height:280px;display:flex;align-items:center;
  padding:72px 0 56px;
  background:linear-gradient(rgba(11,13,18,.74),rgba(11,13,18,.9)),url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  border-bottom:1px solid var(--c-line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.09) 1px,transparent 1px);
  background-size:22px 22px;opacity:.55;pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:460px;height:460px;
  background:radial-gradient(circle,rgba(255,106,31,.3),transparent 66%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3);margin-bottom:18px}
.crumb a{color:var(--c-text-2)}
.crumb a:hover{color:var(--c-accent)}
.crumb span.sep{color:var(--c-text-3)}
.page-hero h1{
  font-size:clamp(28px,5vw,48px);font-weight:900;line-height:1.15;letter-spacing:-.02em;
  max-width:900px;
}
.page-hero h1 em{font-style:normal;background:linear-gradient(100deg,var(--c-primary),var(--c-lime));-webkit-background-clip:text;background-clip:text;color:transparent}
.page-hero .sub{color:var(--c-text-2);font-size:17px;max-width:720px;margin-top:18px}
.hero-inline{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-inline .chip{
  font-size:13px;color:var(--c-text-2);border:1px solid var(--c-line);background:rgba(255,255,255,.04);
  padding:7px 14px;border-radius:999px;
}
.hero-inline .chip b{color:var(--c-lime);font-weight:700}

/* ============ 搜索与快捷标签 ============ */
.tools{padding:48px 0 8px}
.tools-inner{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:26px;box-shadow:var(--shadow-card);
}
.help-search{display:flex;gap:12px}
.help-search input{
  flex:1;min-height:52px;padding:0 18px;border-radius:var(--r-sm);
  background:var(--c-bg-2);border:1px solid var(--c-line);
  color:var(--c-text);font-size:15px;transition:border-color var(--ease),box-shadow var(--ease);
}
.help-search input::placeholder{color:var(--c-text-3)}
.help-search input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(255,106,31,.14)}
.quick-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.tag{
  font-size:13px;padding:8px 16px;border-radius:999px;border:1px solid var(--c-line);
  color:var(--c-text-2);background:rgba(255,255,255,.03);min-height:38px;
  transition:all var(--ease);
}
.tag:hover{color:#fff;border-color:rgba(23,195,232,.6)}
.tag.is-active{background:rgba(255,106,31,.14);border-color:rgba(255,106,31,.55);color:#fff;font-weight:700}

/* ============ 主体两栏 ============ */
.help-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:32px;align-items:start}

.faq-group{margin-bottom:40px}
.faq-group:last-child{margin-bottom:0}
.group-head{display:flex;align-items:flex-start;gap:16px;padding-bottom:18px;border-bottom:1px solid var(--c-line);margin-bottom:8px}
.group-num{
  flex:0 0 auto;width:44px;height:44px;border-radius:var(--r-sm);
  display:grid;place-items:center;font-weight:900;font-size:16px;
  font-variant-numeric:tabular-nums;
  background:linear-gradient(135deg,rgba(255,106,31,.22),rgba(198,242,78,.12));
  border:1px solid rgba(255,106,31,.35);color:var(--c-primary-end);
}
.group-head h2{font-size:clamp(20px,2.4vw,26px);font-weight:800;line-height:1.35}
.group-head p{color:var(--c-text-2);font-size:15px;margin-top:6px}

.faq-list{border-top:1px solid var(--c-line)}
.faq-list .faq-item{border-bottom:1px solid var(--c-line);transition:background var(--ease)}
.faq-list .faq-item:hover{background:rgba(255,255,255,.03)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 8px;text-align:left;font-size:17px;font-weight:700;color:var(--c-text);
  min-height:44px;
}
.faq-q:hover{color:#fff}
.caret{position:relative;flex:0 0 16px;width:16px;height:16px;transition:transform .2s ease-out}
.caret::before,.caret::after{content:"";position:absolute;background:var(--c-accent);border-radius:2px}
.caret::before{left:0;top:7px;width:16px;height:2px}
.caret::after{left:7px;top:0;width:2px;height:16px}
.faq-item.is-open .caret{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease-out}
.faq-a-inner{padding:0 8px 22px;color:var(--c-text-2);font-size:15.5px;line-height:1.85}
.faq-a-inner p + p{margin-top:.8em}
.faq-a-inner strong{color:var(--c-text);font-weight:700}
.faq-a-inner .mini-list{margin-top:10px;display:grid;gap:6px}
.faq-a-inner .mini-list li{position:relative;padding-left:16px}
.faq-a-inner .mini-list li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:2px;background:var(--c-primary)}
.faq-item.is-open .faq-q{color:#fff}

/* ============ 侧栏 ============ */
.side{position:sticky;top:96px;display:grid;gap:20px}
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--shadow-card);
}
.side-card h3{font-size:17px;font-weight:800;margin-bottom:6px}
.side-card .side-note{font-size:13px;color:var(--c-text-3);margin-bottom:14px}
.hot-list{display:grid;gap:4px}
.hot-list a{
  display:flex;align-items:center;gap:12px;padding:11px 10px;border-radius:var(--r-sm);
  font-size:14.5px;color:var(--c-text-2);min-height:44px;
}
.hot-list a:hover{background:rgba(255,255,255,.04);color:#fff}
.hot-list .idx{
  flex:0 0 auto;width:24px;height:24px;border-radius:6px;display:grid;place-items:center;
  font-size:12px;font-weight:800;font-variant-numeric:tabular-nums;
  background:rgba(23,195,232,.14);color:var(--c-accent);border:1px solid rgba(23,195,232,.3);
}
.hot-list .idx.top{background:rgba(255,106,31,.16);color:var(--c-primary-end);border-color:rgba(255,106,31,.4)}
.side-cover{border-radius:var(--r-md);overflow:hidden;border:1px solid var(--c-line)}
.side-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease-out}
.side-cover:hover img{transform:scale(1.04)}
.side-card .btn{width:100%;margin-top:16px}

/* ============ 自检提示条 ============ */
.tips{display:grid;gap:16px;margin-top:8px}
.tip-row{
  display:flex;gap:18px;align-items:flex-start;
  background:var(--c-surface);border:1px solid var(--c-line);border-left:3px solid var(--c-primary);
  border-radius:var(--r-md);padding:22px 24px;transition:transform var(--ease),box-shadow var(--ease);
}
.tip-row:hover{transform:translateY(-4px);box-shadow:var(--shadow-card)}
.tip-row .tip-no{
  font-size:24px;font-weight:900;color:transparent;
  background:linear-gradient(135deg,var(--c-primary),var(--c-lime));
  -webkit-background-clip:text;background-clip:text;
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.tip-row h3{font-size:17px;font-weight:700;margin-bottom:6px}
.tip-row p{color:var(--c-text-2);font-size:15px}

/* ============ CTA ============ */
.cta-block{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,rgba(255,106,31,.14),rgba(23,195,232,.08)),var(--c-bg-2);
  border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
  padding:80px 0;
}
.cta-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center}
.cta-grid h2{font-size:clamp(22px,3.4vw,34px);font-weight:800;line-height:1.28}
.cta-grid .cta-text{color:var(--c-text-2);font-size:16px;margin-top:14px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.cta-media{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--shadow-card)}
.cta-media img{width:100%;aspect-ratio:4/3;object-fit:cover}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-bg);border-top:1px solid var(--c-line);padding:64px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand p{color:var(--c-text-2);font-size:14.5px;margin-top:16px;max-width:340px}
.footer-col h4{font-size:14px;font-weight:800;letter-spacing:.06em;color:var(--c-text);margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{color:var(--c-text-2);font-size:14.5px}
.footer-col a:hover{color:var(--c-primary-end)}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:var(--c-text-3);
}
.footer-bottom .disclaimer{max-width:660px;line-height:1.7}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .nav-menu{display:none}
  .nav-toggle{display:flex}
  .nav-actions .btn-sm{display:none}
  .help-layout{grid-template-columns:1fr}
  .side{position:static}
  .cta-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .page-hero{padding:52px 0 44px;min-height:240px}
  .page-hero .sub{font-size:15.5px}
  .section-head h2{font-size:24px}
  .help-search{flex-direction:column}
  .help-search .btn{width:100%}
  .faq-q{font-size:16px;padding:18px 4px}
  .faq-a-inner{padding:0 4px 20px;font-size:15px}
  .cta-block{padding:56px 0}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:479px){
  body{font-size:15px}
  .logo-text{font-size:15px}
  .logo-mark{width:30px;height:30px;font-size:15px}
  .tools-inner{padding:18px}
  .group-head{flex-direction:column;gap:10px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category4 */
:root{
  --c-bg:#0B0D12;
  --c-bg-2:#14161F;
  --c-surface:#1B1E29;
  --c-line:rgba(255,255,255,.07);
  --c-text:#F2F5FA;
  --c-text-2:#A7B0C0;
  --c-text-3:#6C7688;
  --c-primary:#FF6A1F;
  --c-primary-end:#FF9A3D;
  --c-accent:#17C3E8;
  --c-lime:#C6F24E;
  --c-danger:#FF5C5C;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --r-tag:6px;
  --sh-card:0 8px 24px rgba(0,0,0,.35);
  --sh-hover:0 0 0 1px rgba(255,106,31,.45),0 10px 28px rgba(255,106,31,.28);
  --ease:.18s ease-out;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,"SFMono-Regular","JetBrains Mono","Consolas","Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums}

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

/* ---------- 顶栏导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(11,13,18,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-line);
  transition:border-color var(--ease),background var(--ease);
}
.site-header.is-scrolled{background:rgba(11,13,18,.9);border-bottom-color:rgba(255,106,31,.4)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px;transition:height var(--ease)}
.site-header.is-scrolled .nav{height:60px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:34px;height:34px;display:grid;place-items:center;border-radius:10px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-end));
  color:#0B0D12;font-weight:900;font-size:18px;line-height:1;
  box-shadow:0 6px 16px rgba(255,106,31,.3);
}
.logo-text{font-size:16px;font-weight:800;letter-spacing:.02em;white-space:nowrap}
.logo-text em{font-style:normal;color:var(--c-primary-end)}
.nav-menu{display:flex;align-items:center;justify-content:center;gap:4px;flex:1 1 auto}
.nav-menu a{
  position:relative;padding:8px 14px;font-size:15px;color:var(--c-text-2);
  border-radius:var(--r-pill);transition:color var(--ease),background var(--ease);
}
.nav-menu a:hover{color:var(--c-text);background:rgba(255,255,255,.05)}
.nav-menu a.is-active{color:#fff;background:rgba(255,106,31,.12)}
.nav-menu a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--c-primary);
}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:13px 26px;border:1px solid transparent;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease),background var(--ease),color var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-end));
  color:#fff;box-shadow:0 6px 18px rgba(255,106,31,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(255,106,31,.4)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--c-text)}
.btn-ghost:hover{border-color:var(--c-accent);color:var(--c-accent);transform:translateY(-2px)}
.btn-ghost .arrow{transition:transform var(--ease)}
.btn-ghost:hover .arrow{transform:translateX(4px)}
.btn-sm{min-height:36px;padding:9px 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled]{opacity:.45;pointer-events:none;box-shadow:none}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:var(--r-tag);
  border:1px solid currentColor;font-size:12px;letter-spacing:.08em;line-height:1.6;
}
.badge-accent{color:var(--c-accent)}
.badge-lime{color:var(--c-lime)}
.badge-muted{color:var(--c-text-3)}
.badge-primary{color:var(--c-primary-end)}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;border-top:1px solid var(--c-line);position:relative}
.section-alt{background:var(--c-bg-2)}
.section-head{max-width:800px;margin-bottom:48px}
.section-head h2{font-size:clamp(22px,3.4vw,34px);font-weight:800;line-height:1.25;letter-spacing:-.01em}
.section-head p{margin-top:14px;color:var(--c-text-2);font-size:16px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:16px;
  font-size:12px;letter-spacing:.16em;color:var(--c-primary-end);font-family:var(--mono);
}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--c-primary);border-radius:2px}

/* ---------- 页头 banner ---------- */
.page-head{
  position:relative;overflow:hidden;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;
}
.page-head::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(620px 320px at 88% 0%,rgba(255,106,31,.36),transparent 68%),
    radial-gradient(520px 300px at 4% 100%,rgba(23,195,232,.18),transparent 70%),
    linear-gradient(180deg,rgba(11,13,18,.74),rgba(11,13,18,.94));
}
.page-head::after{
  content:"";position:absolute;inset:0;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:22px 22px;
  -webkit-mask-image:linear-gradient(180deg,#000,transparent 85%);
  mask-image:linear-gradient(180deg,#000,transparent 85%);
}
.page-head .container{position:relative;z-index:2;padding-top:80px;padding-bottom:80px}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3);margin-bottom:20px;flex-wrap:wrap}
.crumb a{color:var(--c-text-3);transition:color var(--ease)}
.crumb a:hover{color:var(--c-accent)}
.crumb .sep{color:var(--c-line)}
.crumb .current{color:var(--c-text-2);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.page-head h1{
  font-size:clamp(28px,5vw,48px);font-weight:900;line-height:1.15;letter-spacing:-.015em;max-width:20ch;
}
.page-head h1 .hl{
  background:linear-gradient(135deg,var(--c-primary),var(--c-lime));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.page-head .lead{margin-top:20px;max-width:66ch;color:var(--c-text-2);font-size:17px}
.head-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.head-stat{display:flex;gap:20px;flex-wrap:wrap;margin-top:32px}
.head-stat span{display:flex;flex-direction:column;gap:2px}
.head-stat b{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:24px;color:var(--c-lime);line-height:1.2}
.head-stat i{font-style:normal;font-size:12px;color:var(--c-text-3);letter-spacing:.08em}

/* ---------- 步骤条 ---------- */
.steps-bar{background:var(--c-bg-2);border-bottom:1px solid var(--c-line);position:relative;z-index:3}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;padding:26px 0}
.steps li{
  position:relative;display:flex;flex-direction:column;gap:4px;
  padding:16px 18px;border:1px solid var(--c-line);border-radius:var(--r-md);
  background:var(--c-surface);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.steps li:hover{transform:translateY(-4px);box-shadow:var(--sh-hover)}
.steps li.is-current{border-color:rgba(255,106,31,.7);box-shadow:0 0 0 1px rgba(255,106,31,.35),0 10px 28px rgba(255,106,31,.18)}
.step-no{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:13px;letter-spacing:.1em;color:var(--c-primary-end)}
.steps li.is-current .step-no{color:var(--c-lime)}
.step-name{font-size:16px;font-weight:700;line-height:1.5}
.step-note{font-size:12px;color:var(--c-text-3)}
.steps li:not(:last-child)::after{
  content:"";position:absolute;top:50%;right:-8px;width:6px;height:2px;background:var(--c-line);
}

/* ---------- 流程卡片 ---------- */
.flow-list{display:flex;flex-direction:column;gap:24px}
.flow-card{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  overflow:hidden;transition:transform var(--ease),box-shadow var(--ease);
}
.flow-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover)}
.flow-card:nth-child(even) .flow-media{order:2}
.flow-media{position:relative;min-height:260px;background:var(--c-bg-2)}
.flow-media img{width:100%;height:100%;object-fit:cover}
.flow-media .tagline{
  position:absolute;left:16px;top:16px;padding:4px 10px;border-radius:var(--r-tag);
  background:rgba(11,13,18,.72);border:1px solid rgba(255,255,255,.16);
  font-size:12px;letter-spacing:.08em;color:var(--c-lime);
}
.flow-body{padding:32px;display:flex;flex-direction:column;gap:14px}
.flow-body h3{font-size:clamp(20px,2.4vw,24px);font-weight:800;line-height:1.35}
.flow-body p{color:var(--c-text-2);font-size:15.5px}
.flow-points{display:flex;flex-direction:column;gap:10px;margin-top:4px}
.flow-points li{position:relative;padding-left:22px;color:var(--c-text-2);font-size:15px}
.flow-points li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-end));transform:rotate(45deg);
}
.flow-foot{margin-top:auto;display:flex;align-items:center;gap:12px;padding-top:8px;font-size:13px;color:var(--c-text-3)}
.flow-foot .dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent)}

/* ---------- 表单 / 领取区 ---------- */
.claim-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:32px;align-items:start}
.panel{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:32px;box-shadow:var(--sh-card);
}
.panel h3{font-size:22px;font-weight:800;margin-bottom:8px}
.panel .panel-sub{color:var(--c-text-2);font-size:15px;margin-bottom:24px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;color:var(--c-text-2);margin-bottom:8px}
.field .req{color:var(--c-primary);margin-left:2px}
.input{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-sm);
  background:var(--c-bg-2);border:1px solid var(--c-line);color:var(--c-text);
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.input::placeholder{color:var(--c-text-3)}
.input:hover{border-color:rgba(255,255,255,.16)}
.input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(255,106,31,.16);background:#101320}
.field .msg{font-size:13px;color:var(--c-text-3);margin-top:6px}
.field.has-error .input{border-color:var(--c-danger);box-shadow:0 0 0 4px rgba(255,92,92,.12)}
.field.has-error .msg{color:var(--c-danger)}
.field.is-ok .input{border-color:rgba(198,242,78,.6)}
.code-row{display:flex;gap:12px;align-items:stretch}
.code-row .input{flex:1 1 auto}
.code-box{
  flex:0 0 122px;display:grid;place-items:center;height:48px;border-radius:var(--r-sm);
  background:var(--c-bg-2);border:1px dashed rgba(23,195,232,.5);color:var(--c-accent);
  font-family:var(--mono);font-size:19px;letter-spacing:.3em;text-indent:.3em;cursor:pointer;
  user-select:none;transition:border-color var(--ease),background var(--ease);
}
.code-box:hover{border-color:var(--c-accent);background:#101a22}
.check{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--c-text-2);line-height:1.7;margin:8px 0 18px}
.check input{width:16px;height:16px;margin-top:5px;accent-color:var(--c-primary);flex:0 0 auto}
.check a{color:var(--c-accent);border-bottom:1px dashed rgba(23,195,232,.5)}
.form-note{font-size:12px;color:var(--c-text-3);margin-top:12px;line-height:1.7}
.form-status{
  display:none;margin-top:16px;padding:12px 14px;border-radius:var(--r-sm);
  font-size:14px;border:1px solid transparent;
}
.form-status.is-ok{display:block;color:var(--c-lime);border-color:rgba(198,242,78,.4);background:rgba(198,242,78,.08)}
.form-status.is-error{display:block;color:var(--c-danger);border-color:rgba(255,92,92,.4);background:rgba(255,92,92,.08)}
.spinner{
  display:none;width:16px;height:16px;border-radius:50%;
  border:2px solid rgba(255,255,255,.35);border-top-color:#fff;animation:spin .7s linear infinite;
}
.is-loading .spinner{display:inline-block}
.is-loading .btn-label{opacity:.85}
@keyframes spin{to{transform:rotate(360deg)}}

.benefit-list{margin-top:6px}
.benefit-list li{display:flex;gap:12px;padding:14px 0;border-bottom:1px dashed var(--c-line)}
.benefit-list li:last-child{border-bottom:0;padding-bottom:0}
.tick{
  flex:0 0 22px;height:22px;border-radius:50%;display:grid;place-items:center;margin-top:5px;
  background:rgba(198,242,78,.14);color:var(--c-lime);font-size:13px;font-weight:900;line-height:1;
}
.benefit-list b{display:block;font-size:15.5px;font-weight:700;margin-bottom:2px}
.benefit-list span{font-size:14px;color:var(--c-text-2)}
.benefit-img{margin-top:22px;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--c-line)}
.benefit-img img{width:100%;height:170px;object-fit:cover}

/* ---------- 注意提示条 ---------- */
.note-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.note-item{
  background:var(--c-bg-2);border:1px solid var(--c-line);border-left:3px solid var(--c-primary);
  border-radius:var(--r-md);padding:22px;transition:transform var(--ease),border-color var(--ease);
}
.note-item:hover{transform:translateY(-4px);border-color:rgba(255,106,31,.4)}
.note-item h3{font-size:17px;font-weight:700;margin-bottom:8px}
.note-item p{font-size:14.5px;color:var(--c-text-2)}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:minmax(0,2.1fr) minmax(0,1fr);gap:32px;align-items:start}
.faq{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 10px;text-align:left;font-size:17px;font-weight:700;color:var(--c-text);
  cursor:pointer;transition:background var(--ease),color var(--ease);border-radius:var(--r-sm);
}
.faq-q:hover{background:rgba(255,255,255,.03)}
.faq-icon{position:relative;flex:0 0 20px;height:20px;transition:transform .2s ease}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-primary);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:16px;height:2px}
.faq-icon::after{width:2px;height:16px}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-item.is-open .faq-q{color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease}
.faq-item.is-open .faq-a{max-height:360px}
.faq-a p{padding:0 10px 22px;color:var(--c-text-2);font-size:15px;max-width:70ch}
.hot-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);padding:26px}
.hot-card h3{font-size:18px;font-weight:800;margin-bottom:14px}
.hot-card ul li{padding:12px 0;border-bottom:1px solid var(--c-line);font-size:14.5px;color:var(--c-text-2)}
.hot-card ul li:last-child{border-bottom:0}
.hot-card ul li a{transition:color var(--ease)}
.hot-card ul li a:hover{color:var(--c-accent)}
.hot-card .mini{margin-top:16px;font-size:13px;color:var(--c-text-3)}

/* ---------- 底部返回 / CTA ---------- */
.return-inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  background:linear-gradient(135deg,rgba(255,106,31,.14),rgba(23,195,232,.08));
  border:1px solid var(--c-line);border-radius:var(--r-lg);padding:36px;
}
.return-inner h2{font-size:clamp(20px,2.6vw,26px);font-weight:800;line-height:1.35}
.return-inner p{margin-top:10px;color:var(--c-text-2);font-size:15px;max-width:58ch}
.return-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-bg-2);border-top:1px solid var(--c-line);padding:72px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand p{margin-top:16px;color:var(--c-text-3);font-size:14px;max-width:38ch;line-height:1.8}
.footer-col h4{font-size:15px;font-weight:800;margin-bottom:16px;color:var(--c-text)}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14px;color:var(--c-text-3);transition:color var(--ease)}
.footer-col ul a:hover{color:var(--c-accent)}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--c-line);
  display:flex;align-items:flex-start;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:12.5px;color:var(--c-text-3);line-height:1.8;
}
.footer-bottom .disclaimer{max-width:62ch}

/* ---------- 移动端抽屉 ---------- */
.mobile-drawer{
  position:fixed;inset:0;z-index:80;
  display:flex;flex-direction:column;gap:6px;
  padding:88px 24px 28px;
  background:rgba(11,13,18,.98);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
  overflow-y:auto;
}
.mobile-drawer.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.mobile-drawer a{font-size:18px;font-weight:700;color:var(--c-text-2);padding:14px 4px;border-bottom:1px solid var(--c-line)}
.mobile-drawer a.is-active{color:var(--c-primary-end)}
.mobile-drawer a:hover{color:var(--c-text)}
.mobile-cta{margin-top:auto;padding-top:28px;border-bottom:0}
.mobile-cta .btn{width:100%}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--c-line);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;cursor:pointer;
  transition:border-color var(--ease),background var(--ease);
}
.nav-toggle:hover{border-color:rgba(255,255,255,.22);background:rgba(255,255,255,.04)}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-text);border-radius:2px;transition:transform var(--ease),opacity var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:1080px}
}
@media (max-width:1023px){
  .container{max-width:960px;padding:0 28px}
  .nav-menu{display:none}
  .nav-toggle{display:flex}
  .section{padding:72px 0}
  .page-head .container{padding-top:64px;padding-bottom:64px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .steps li:not(:last-child)::after{display:none}
  .flow-card{grid-template-columns:1fr}
  .flow-card:nth-child(even) .flow-media{order:0}
  .flow-media{min-height:210px}
  .claim-grid{grid-template-columns:1fr}
  .faq-layout{grid-template-columns:1fr}
  .note-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section-head{margin-bottom:32px}
  .page-head .container{padding-top:48px;padding-bottom:48px}
  .page-head .lead{font-size:15.5px}
  .head-stat{gap:24px}
  .head-stat b{font-size:20px}
  .panel{padding:22px}
  .flow-body{padding:22px}
  .steps{grid-template-columns:1fr;padding:20px 0}
  .step-name{font-size:15px}
  .return-inner{padding:24px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .faq-q{font-size:16px;padding:18px 6px}
  .btn{padding:12px 22px}
  .return-actions .btn{width:100%}
}
@media (max-width:479px){
  .head-meta{gap:8px}
  .code-box{flex:0 0 104px;font-size:17px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}