/* roulang page: index */
:root{
  --bg-0:#050A18;
  --bg-1:#0A1226;
  --bg-2:#101B36;
  --surface:rgba(255,255,255,.055);
  --surface-2:rgba(255,255,255,.09);
  --line:rgba(255,255,255,.12);
  --line-strong:rgba(255,255,255,.22);
  --primary:#2FB8FF;
  --primary-2:#7B5CFF;
  --accent:#FFC24B;
  --ok:#2EE6A8;
  --warn:#FFB020;
  --danger:#FF5C7A;
  --text:#E9EFFB;
  --text-2:#A7B6D4;
  --text-3:#6E7E9E;
  --nav-bg:rgba(255,255,255,.94);
  --nav-text:#16203A;
  --nav-text-2:#5A6A85;
  --nav-line:rgba(16,32,64,.08);
  --r-card:20px;
  --r-sm:12px;
  --r-btn:12px;
  --r-pill:999px;
  --r-img:16px;
  --sh-card:0 20px 44px -20px rgba(0,0,0,.7), inset 0 1px 0 rgba(255,255,255,.08);
  --sh-glow:0 0 0 1px rgba(47,184,255,.35), 0 14px 34px -10px rgba(47,184,255,.45);
  --ease:cubic-bezier(.22,.68,.32,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
a:hover{color:inherit}
button{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:.01em}
p{margin:0}
.container{width:100%;max-width:1280px;margin:0 auto;padding-left:24px;padding-right:24px}
::selection{background:rgba(47,184,255,.35);color:#fff}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--nav-bg);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--nav-line);
  box-shadow:0 6px 22px rgba(10,20,50,.10);
  transition:box-shadow .28s var(--ease);
}
body.scrolled .site-header{box-shadow:0 10px 30px rgba(10,20,50,.18)}
.nav-wrap{display:flex;align-items:center;gap:26px;height:70px;transition:height .28s var(--ease)}
body.scrolled .nav-wrap{height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand__mark{
  width:28px;height:28px;border-radius:9px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  color:#fff;font-size:13px;
  box-shadow:0 8px 18px -6px rgba(47,184,255,.75);
}
.brand__text{font-size:18px;font-weight:700;color:var(--nav-text);letter-spacing:.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-link-item{
  position:relative;padding:8px 14px;border-radius:10px;font-size:15px;font-weight:500;
  color:var(--nav-text-2);transition:color .24s var(--ease),background .24s var(--ease);
  white-space:nowrap;
}
.nav-link-item:hover{color:var(--nav-text);background:rgba(16,32,64,.05)}
.nav-link-item.active{color:var(--primary)}
.nav-link-item.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-2));
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:14px}
.search-box{
  display:flex;align-items:center;gap:8px;width:248px;height:42px;padding:0 16px;
  border-radius:var(--r-pill);background:#F1F5FB;border:1px solid rgba(16,32,64,.08);
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease);
}
.search-box i{color:#8899B4;font-size:13px}
.search-box input{flex:1;border:0;outline:0;background:transparent;font-size:14px;color:var(--nav-text)}
.search-box input::placeholder{color:#8899B4}
.search-box:focus-within{border-color:var(--primary);background:#fff;box-shadow:0 0 0 4px rgba(47,184,255,.18)}
.btn-cta{
  display:inline-flex;align-items:center;gap:8px;padding:11px 22px;border-radius:var(--r-btn);
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  color:#fff;font-size:15px;font-weight:600;white-space:nowrap;
  box-shadow:0 12px 26px -10px rgba(47,184,255,.8);
  transition:transform .24s var(--ease),filter .24s var(--ease),box-shadow .24s var(--ease);
}
.btn-cta:hover{color:#fff;filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 16px 32px -10px rgba(47,184,255,.95)}
.btn-cta:active{transform:translateY(1px)}
.btn-cta:focus-visible{outline:2px solid var(--nav-text);outline-offset:2px}
.nav-toggle{
  margin-left:auto;width:44px;height:44px;border-radius:12px;background:#fff;
  border:1px solid rgba(16,32,64,.12);color:var(--nav-text);font-size:17px;
  display:grid;place-items:center;transition:background .24s var(--ease);
}
.nav-toggle:hover{background:#F3F7FD}
.nav-toggle:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.nav-drawer{background:rgba(10,18,38,.97);color:var(--text);border-left:1px solid var(--line);width:320px}
.nav-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:20px 22px}
.nav-drawer .offcanvas-title{font-size:17px;font-weight:700;color:var(--text)}
.nav-drawer .btn-close{filter:invert(1) grayscale(1);opacity:.7}
.nav-drawer .offcanvas-body{padding:22px}
.drawer-search{
  display:flex;align-items:center;gap:10px;height:46px;padding:0 16px;margin-bottom:22px;
  border-radius:var(--r-sm);background:var(--surface);border:1px solid var(--line);
}
.drawer-search i{color:var(--text-3);font-size:14px}
.drawer-search input{flex:1;border:0;outline:0;background:transparent;color:var(--text);font-size:14px}
.drawer-search input::placeholder{color:var(--text-3)}
.drawer-nav{display:flex;flex-direction:column;gap:6px}
.drawer-nav a{
  padding:13px 16px;border-radius:var(--r-sm);font-size:15px;color:var(--text-2);
  border:1px solid transparent;transition:.24s var(--ease);
}
.drawer-nav a:hover{color:var(--text);background:var(--surface);border-color:var(--line)}
.drawer-nav a.active{color:var(--primary);background:rgba(47,184,255,.10);border-color:rgba(47,184,255,.32)}
.drawer-cta{margin-top:24px;width:100%;justify-content:center}

/* ============ Hero ============ */
.hero{
  position:relative;display:flex;align-items:center;isolation:isolate;
  min-height:min(86vh,840px);padding:96px 0 84px;overflow:hidden;
}
.hero__bg{position:absolute;inset:0;z-index:-3;background-size:cover;background-position:center;background-repeat:no-repeat}
.hero__shade{position:absolute;inset:0;z-index:-2;background:linear-gradient(180deg,rgba(5,10,24,.55),rgba(5,10,24,.92))}
.hero__grid{
  position:absolute;inset:0;z-index:-1;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:58px 58px;
  -webkit-mask-image:radial-gradient(80% 70% at 30% 45%,#000 20%,transparent 100%);
  mask-image:radial-gradient(80% 70% at 30% 45%,#000 20%,transparent 100%);
}
.hero-card{
  position:relative;max-width:760px;padding:46px 46px 38px;border-radius:26px;
  background:linear-gradient(160deg,rgba(255,255,255,.10),rgba(255,255,255,.035));
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  border:1px solid var(--line);
  box-shadow:var(--sh-card);
}
.hero-card::before{
  content:"";position:absolute;inset:0;border-radius:26px;padding:1px;pointer-events:none;
  background:linear-gradient(135deg,rgba(47,184,255,.70),rgba(123,92,255,.35) 45%,rgba(255,194,75,.35));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--primary);padding:5px 14px;border-radius:var(--r-pill);
  background:rgba(47,184,255,.12);border:1px solid rgba(47,184,255,.28);
}
.hero-card h1{
  margin:20px 0 16px;font-size:clamp(30px,3.9vw,52px);font-weight:800;line-height:1.14;letter-spacing:.005em;
}
.hero__sub{color:var(--text-2);font-size:clamp(15px,1.15vw,17px);max-width:600px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.btn-main{
  display:inline-flex;align-items:center;gap:9px;padding:14px 28px;border-radius:var(--r-btn);
  background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;
  font-size:16px;font-weight:600;box-shadow:var(--sh-glow);
  transition:transform .24s var(--ease),filter .24s var(--ease),box-shadow .24s var(--ease);
}
.btn-main:hover{color:#fff;filter:brightness(1.06);transform:translateY(-1px)}
.btn-main:active{transform:translateY(1px)}
.btn-main:focus-visible{outline:2px solid var(--primary);outline-offset:3px}
.btn-ghost{
  display:inline-flex;align-items:center;gap:9px;padding:14px 26px;border-radius:var(--r-btn);
  background:rgba(255,255,255,.04);border:1px solid var(--line-strong);color:var(--text);
  font-size:16px;font-weight:600;transition:.24s var(--ease);
}
.btn-ghost:hover{color:var(--text);border-color:var(--primary);background:rgba(47,184,255,.10)}
.btn-ghost:active{transform:translateY(1px)}
.btn-ghost:focus-visible{outline:2px solid var(--primary);outline-offset:3px}
.hero__stats{
  display:flex;flex-wrap:wrap;gap:14px 44px;margin-top:36px;padding-top:26px;border-top:1px solid var(--line);
}
.stat__num{
  font-size:clamp(26px,3vw,38px);font-weight:800;line-height:1.1;color:#fff;
  font-variant-numeric:tabular-nums;font-family:Inter,"PingFang SC",system-ui,sans-serif;
}
.stat__num em{font-style:normal;font-size:.48em;font-weight:700;color:var(--accent);margin-left:4px}
.stat__label{display:block;margin-top:4px;font-size:13px;color:var(--text-3)}

/* ============ 通用板块 ============ */
.section{padding:112px 0}
.section--alt{background:linear-gradient(180deg,var(--bg-0),var(--bg-1) 40%,var(--bg-0))}
.section-head{max-width:740px;margin-bottom:52px}
.section-head h2{margin:14px 0 14px;font-size:clamp(26px,3.2vw,40px);font-weight:700;line-height:1.2}
.section-head p{color:var(--text-2);font-size:16px}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;max-width:none}
.section-head--row .head-text{max-width:720px}
.link-more{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--primary);
  white-space:nowrap;position:relative;padding-bottom:3px;
}
.link-more::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;
  background:linear-gradient(90deg,var(--primary),var(--primary-2));transition:width .3s var(--ease);
}
.link-more:hover::after{width:100%}
.link-more i{font-size:12px;transition:transform .3s var(--ease)}
.link-more:hover i{transform:translateX(3px)}

/* ============ 玩法介绍 ============ */
.sticky-head{position:sticky;top:112px}
.sticky-head h2{margin:14px 0 14px;font-size:clamp(26px,3vw,38px);font-weight:700;line-height:1.2}
.sticky-head p{color:var(--text-2);margin-bottom:24px}
.play-list{display:flex;flex-direction:column;gap:18px}
.play-card{
  display:flex;gap:22px;padding:26px;border-radius:var(--r-card);
  background:var(--surface);border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform .32s var(--ease),border-color .32s var(--ease),box-shadow .32s var(--ease);
}
.play-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--sh-card)}
.play-card__num{
  flex:0 0 52px;width:52px;height:52px;border-radius:16px;display:grid;place-items:center;
  font-size:18px;font-weight:800;color:#fff;font-variant-numeric:tabular-nums;
  background:linear-gradient(135deg,rgba(47,184,255,.92),rgba(123,92,255,.92));
  box-shadow:0 12px 26px -12px rgba(47,184,255,.9);
}
.play-card__body h3{font-size:20px;font-weight:600;line-height:1.4;margin-bottom:8px}
.play-card__body p{color:var(--text-2);font-size:15px}
.play-card__tag{margin-top:12px;display:flex;flex-wrap:wrap;gap:8px}
.tag{
  font-size:12px;font-weight:600;padding:4px 10px;border-radius:var(--r-pill);
  background:rgba(47,184,255,.12);color:var(--primary);border:1px solid rgba(47,184,255,.24);
}
.tag--gold{background:rgba(255,194,75,.12);color:var(--accent);border-color:rgba(255,194,75,.28)}
.tag--ok{background:rgba(46,230,168,.12);color:var(--ok);border-color:rgba(46,230,168,.28)}
.tag--mute{background:rgba(255,255,255,.06);color:var(--text-3);border-color:var(--line)}

/* ============ 奖励预览 ============ */
.reward-track{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.reward-card{
  display:flex;flex-direction:column;border-radius:var(--r-card);overflow:hidden;
  background:linear-gradient(165deg,rgba(255,255,255,.09),rgba(255,255,255,.035));
  border:1px solid var(--line);box-shadow:inset 0 1px 0 rgba(255,255,255,.07);
  transition:transform .32s var(--ease),border-color .32s var(--ease),box-shadow .32s var(--ease);
}
.reward-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--sh-card)}
.reward-card__thumb{
  position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,var(--bg-2),#1b2a52);
}
.reward-card__thumb img{width:100%;height:100%;object-fit:cover;transition:transform .42s var(--ease)}
.reward-card:hover .reward-card__thumb img{transform:scale(1.04)}
.reward-card__thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,10,24,.05),rgba(5,10,24,.55));
}
.reward-card__badge{
  position:absolute;top:12px;left:12px;z-index:2;font-size:12px;font-weight:600;
  padding:4px 10px;border-radius:var(--r-pill);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
}
.badge-ok{background:rgba(46,230,168,.18);color:var(--ok);border:1px solid rgba(46,230,168,.4)}
.badge-run{background:rgba(47,184,255,.18);color:var(--primary);border:1px solid rgba(47,184,255,.4)}
.badge-end{background:rgba(110,126,158,.20);color:#9FB0CC;border:1px solid rgba(110,126,158,.45)}
.reward-card__body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.reward-card__body h3{font-size:17px;font-weight:600}
.reward-card__body p{font-size:14px;color:var(--text-3);min-height:44px}
.reward-value{
  font-size:clamp(24px,2.4vw,30px);font-weight:800;color:var(--accent);
  font-variant-numeric:tabular-nums;font-family:Inter,"PingFang SC",system-ui,sans-serif;
  line-height:1.2;
}
.reward-value span{font-size:.5em;font-weight:600;color:var(--text-3);margin-left:6px}
.reward-card__foot{margin-top:auto;padding-top:6px}
.btn-mini{
  display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;
  padding:9px 16px;border-radius:10px;color:var(--text-2);
  background:rgba(255,255,255,.05);border:1px solid var(--line);transition:.26s var(--ease);
}
.btn-mini:hover{color:var(--primary);border-color:rgba(47,184,255,.5);background:rgba(47,184,255,.10)}
.btn-mini:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

/* ============ 任务进度 ============ */
.task-panel{
  display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:56px;
  padding:44px;border-radius:26px;
  background:linear-gradient(165deg,rgba(255,255,255,.07),rgba(255,255,255,.025));
  border:1px solid var(--line);box-shadow:var(--sh-card);
}
.step{display:flex;gap:20px;padding-bottom:26px}
.step:last-child{padding-bottom:0}
.step__track{position:relative;flex:0 0 36px}
.step__node{
  width:36px;height:36px;border-radius:50%;display:grid;place-items:center;
  font-size:13px;font-weight:700;background:rgba(255,255,255,.04);
  border:2px solid var(--line-strong);color:var(--text-3);
  transition:.3s var(--ease);position:relative;z-index:2;
}
.step__line{
  position:absolute;left:17px;top:38px;width:2px;height:calc(100% - 4px);
  background:linear-gradient(180deg,rgba(47,184,255,.55),rgba(123,92,255,.2));
}
.step:last-child .step__line{display:none}
.step__body h4{font-size:17px;font-weight:600;margin-bottom:4px}
.step__body p{font-size:14px;color:var(--text-3)}
.step.is-done .step__node{background:var(--accent);border-color:var(--accent);color:#1A1300;box-shadow:0 0 18px rgba(255,194,75,.5)}
.step.is-current .step__node{border-color:var(--primary);color:var(--primary);box-shadow:0 0 0 4px rgba(47,184,255,.18);animation:pulseRing 1.8s ease-out infinite}
.step.is-current .step__body h4{color:var(--primary)}
@keyframes pulseRing{
  0%{box-shadow:0 0 0 3px rgba(47,184,255,.28)}
  70%{box-shadow:0 0 0 11px rgba(47,184,255,0)}
  100%{box-shadow:0 0 0 3px rgba(47,184,255,0)}
}
.progress-wrap{display:flex;flex-direction:column;gap:26px}
.progress-bar-outer{height:8px;border-radius:var(--r-pill);background:rgba(255,255,255,.08);overflow:hidden}
.progress-bar-inner{
  height:100%;width:62%;border-radius:var(--r-pill);
  background:linear-gradient(90deg,var(--primary),var(--primary-2));
  box-shadow:0 0 14px rgba(47,184,255,.55);
}
.progress-meter{display:flex;align-items:baseline;justify-content:space-between}
.progress-meter strong{
  font-size:clamp(34px,4vw,52px);font-weight:800;color:#fff;line-height:1;
  font-variant-numeric:tabular-nums;font-family:Inter,"PingFang SC",system-ui,sans-serif;
}
.progress-meter span{font-size:13px;color:var(--text-3)}
.mini-list{display:flex;flex-direction:column;gap:14px;margin-top:6px}
.mini-list li{display:flex;align-items:flex-start;gap:12px;font-size:15px;color:var(--text-2)}
.mini-list i{color:var(--primary);font-size:13px;margin-top:8px}

/* ============ 最新信息 CMS ============ */
.cms-loop{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.cms-card{
  border-radius:var(--r-card);background:var(--surface);border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);overflow:hidden;
  transition:transform .32s var(--ease),border-color .32s var(--ease),box-shadow .32s var(--ease);
}
.cms-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--sh-card)}
.cms-card--wide{grid-column:span 2}
.cms-card__link{display:flex;flex-direction:column;height:100%;padding:26px;gap:12px}
.cms-card__title{
  font-size:19px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.cms-card--wide .cms-card__title{font-size:23px}
.cms-card__desc{
  color:var(--text-2);font-size:15px;line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.cms-card__meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);
}
.cms-card__meta i.fa-arrow-right{margin-left:auto;color:var(--primary);transition:transform .3s var(--ease)}
.cms-card:hover .cms-card__meta i.fa-arrow-right{transform:translateX(4px)}
.cms-empty{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:16px;
  padding:64px 24px;border-radius:var(--r-card);text-align:center;
  background:var(--surface);border:1px dashed var(--line-strong);
}
.cms-empty i{font-size:34px;color:rgba(47,184,255,.45)}
.cms-empty p{color:var(--text-2);font-size:15px}
.btn-outline-line{
  display:inline-flex;align-items:center;gap:8px;padding:11px 22px;border-radius:var(--r-btn);
  border:1px solid var(--line-strong);color:var(--text);font-size:14px;font-weight:600;
  transition:.26s var(--ease);
}
.btn-outline-line:hover{border-color:var(--primary);color:var(--primary);background:rgba(47,184,255,.08)}

/* ============ 栏目入口 ============ */
.channel-card{
  display:flex;flex-direction:column;gap:12px;height:100%;padding:26px;border-radius:var(--r-card);
  background:var(--surface);border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform .32s var(--ease),border-color .32s var(--ease),box-shadow .32s var(--ease);
}
.channel-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--sh-card)}
.channel-card__icon{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;font-size:18px;color:#fff;
  background:linear-gradient(135deg,rgba(47,184,255,.9),rgba(123,92,255,.9));
  box-shadow:0 12px 24px -12px rgba(47,184,255,.9);
}
.channel-card h3{font-size:18px;font-weight:600}
.channel-card p{font-size:14px;color:var(--text-3)}
.channel-card span.more{margin-top:auto;font-size:14px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:7px}
.channel-card span.more i{font-size:11px;transition:transform .3s var(--ease)}
.channel-card:hover span.more i{transform:translateX(3px)}

/* ============ 数据佐证 ============ */
.proof-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;
  padding:36px;border-radius:26px;
  background:linear-gradient(135deg,rgba(47,184,255,.10),rgba(123,92,255,.06));
  border:1px solid var(--line);
}
.proof-item{text-align:left}
.proof-item strong{
  display:block;font-size:clamp(24px,2.6vw,34px);font-weight:800;color:#fff;line-height:1.2;
  font-variant-numeric:tabular-nums;font-family:Inter,"PingFang SC",system-ui,sans-serif;
}
.proof-item span{display:block;margin-top:6px;font-size:14px;color:var(--text-2)}

/* ============ FAQ ============ */
.faq-accordion .accordion-item{
  background:transparent;border:0;border-bottom:1px solid var(--line);border-radius:0;
}
.faq-accordion .accordion-item:first-of-type{border-top:1px solid var(--line)}
.faq-accordion .accordion-button{
  background:transparent;color:var(--text);font-size:17px;font-weight:600;line-height:1.6;
  padding:22px 8px 22px 22px;box-shadow:none;border-radius:0;
}
.faq-accordion .accordion-button::before{
  content:"";position:absolute;left:0;top:26px;bottom:26px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--primary-2));opacity:.55;transition:opacity .3s var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--primary);background:rgba(47,184,255,.05)}
.faq-accordion .accordion-button:not(.collapsed)::before{opacity:1}
.faq-accordion .accordion-button::after{
  background-image:none;content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:12px;color:var(--text-3);width:auto;height:auto;transform:none;transition:transform .3s var(--ease),color .3s var(--ease);
  display:grid;place-items:center;
}
.faq-accordion .accordion-button:not(.collapsed)::after{content:"\f068";color:var(--primary);transform:none}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:2px solid rgba(47,184,255,.5);outline-offset:-2px}
.faq-accordion .accordion-body{
  padding:0 26px 24px 22px;color:var(--text-2);font-size:15px;line-height:1.85;
}

/* ============ CTA ============ */
.cta-panel{
  position:relative;overflow:hidden;text-align:center;
  padding:72px 40px;border-radius:30px;
  background:linear-gradient(160deg,rgba(255,255,255,.09),rgba(255,255,255,.03));
  border:1px solid var(--line);box-shadow:var(--sh-card);
}
.cta-panel::before{
  content:"";position:absolute;inset:0;opacity:.26;z-index:0;
  background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;
}
.cta-panel::after{
  content:"";position:absolute;inset:0;z-index:0;
  background:linear-gradient(180deg,rgba(5,10,24,.72),rgba(5,10,24,.94));
}
.cta-panel > *{position:relative;z-index:1}
.cta-panel h2{font-size:clamp(26px,3.2vw,38px);font-weight:700;line-height:1.25;margin-bottom:14px}
.cta-panel p{color:var(--text-2);max-width:620px;margin:0 auto 30px;font-size:16px}
.cta-note{margin-top:18px;font-size:13px;color:var(--text-3)}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-0);border-top:1px solid var(--line);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:44px;padding-bottom:52px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand__text{color:#fff}
.footer-brand p{color:var(--text-3);font-size:14px;max-width:340px}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14px;color:var(--text-3);transition:color .24s var(--ease),padding-left .24s var(--ease)}
.footer-col a:hover{color:var(--primary);padding-left:4px}
.footer-bottom{
  border-top:1px solid var(--line);padding:24px 0;display:flex;flex-wrap:wrap;gap:16px 28px;
  align-items:center;justify-content:space-between;
}
.footer-bottom p{font-size:13px;color:var(--text-3)}
.footer-bottom ul{display:flex;flex-wrap:wrap;gap:22px}
.footer-bottom a{font-size:13px;color:var(--text-3)}
.footer-bottom a:hover{color:var(--primary)}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.visible{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1399.98px){
  .container{max-width:1240px}
}
@media (max-width:1199.98px){
  .search-box{width:200px}
  .nav-links{gap:0}
  .nav-link-item{padding:8px 11px;font-size:14px}
}
@media (max-width:991.98px){
  .container{padding-left:18px;padding-right:18px}
  .section{padding:64px 0}
  .section-head{margin-bottom:36px}
  .section-head--row{flex-direction:column;align-items:flex-start;gap:18px}
  .hero{padding:72px 0 64px;min-height:520px}
  .hero-card{padding:32px 24px 28px;border-radius:22px}
  .hero__stats{gap:18px 32px}
  .sticky-head{position:static;margin-bottom:28px}
  .task-panel{grid-template-columns:minmax(0,1fr);gap:36px;padding:28px 22px}
  .reward-track{
    display:flex;overflow-x:auto;gap:16px;scroll-snap-type:x mandatory;
    padding-bottom:14px;-webkit-overflow-scrolling:touch;
  }
  .reward-track::-webkit-scrollbar{height:6px}
  .reward-track::-webkit-scrollbar-thumb{background:rgba(255,255,255,.16);border-radius:6px}
  .reward-card{flex:0 0 76%;scroll-snap-align:start}
  .cms-loop{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
  .cms-card--wide{grid-column:span 2}
  .proof-strip{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px;padding:28px 22px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .cta-panel{padding:52px 22px;border-radius:24px}
}
@media (max-width:767.98px){
  body{font-size:15px}
  .section{padding:56px 0}
  .hero-card h1{margin:16px 0 12px}
  .hero__actions{gap:12px}
  .btn-main,.btn-ghost{width:100%;justify-content:center}
  .nav-wrap{height:64px}
  body.scrolled .nav-wrap{height:60px}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px}
  .brand__text{font-size:16px}
  .cms-loop{grid-template-columns:minmax(0,1fr)}
  .cms-card--wide{grid-column:span 1}
  .cms-card--wide .cms-card__title{font-size:19px}
  .reward-card{flex:0 0 84%}
  .proof-strip{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:30px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .play-card{flex-direction:column;gap:14px;padding:22px}
  .play-card__num{width:46px;height:46px;flex:0 0 46px;border-radius:14px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --bg-0:#050A18; --bg-1:#0A1226; --bg-2:#101B36;
  --surface:rgba(255,255,255,.055); --surface-2:rgba(255,255,255,.09);
  --line:rgba(255,255,255,.12); --line-strong:rgba(255,255,255,.22);
  --primary:#2FB8FF; --primary-2:#7B5CFF; --accent:#FFC24B;
  --ok:#2EE6A8; --warn:#FFB020; --danger:#FF5C7A;
  --text:#E9EFFB; --text-2:#A7B6D4; --text-3:#6E7E9E;
  --nav-bg:rgba(255,255,255,.94); --nav-text:#16203A; --nav-text-2:#5A6A85; --nav-line:rgba(16,32,64,.08);
  --r-card:20px; --r-sm:12px; --r-btn:12px; --r-pill:999px; --r-img:16px;
  --sh-card:0 20px 44px -20px rgba(0,0,0,.7), inset 0 1px 0 rgba(255,255,255,.08);
  --sh-glow:0 0 0 1px rgba(47,184,255,.35), 0 14px 34px -10px rgba(47,184,255,.45);
  --sh-nav:0 6px 22px rgba(10,20,50,.10);
  --font-sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --ease:cubic-bezier(.22,.68,.32,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font-sans);font-size:16px;line-height:1.85;
  color:var(--text);background:var(--bg-0);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .25s var(--ease)}
a:hover{color:var(--primary)}
button,input{font:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
h1,h2,h3,h4{margin:0;letter-spacing:.01em;line-height:1.22;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 24px}
@media (min-width:1400px){.container{max-width:1320px}}
@media (max-width:575.98px){.container{padding:0 16px}}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--nav-bg);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--nav-line);box-shadow:var(--sh-nav);
  transition:box-shadow .3s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 30px rgba(10,20,50,.16)}
.header-inner{display:flex;align-items:center;gap:28px;height:70px;transition:height .3s var(--ease)}
.site-header.is-scrolled .header-inner{height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand__mark{
  width:36px;height:36px;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;font-size:16px;
  box-shadow:0 8px 20px -8px rgba(47,184,255,.85);flex:0 0 auto;
}
.brand__text{font-size:19px;font-weight:700;color:var(--nav-text);letter-spacing:.01em}
.nav-links{display:flex;align-items:center;gap:4px;flex:1 1 auto;justify-content:center}
.nav-link-item{
  position:relative;padding:9px 14px;border-radius:10px;font-size:15px;font-weight:500;
  color:var(--nav-text-2);white-space:nowrap;
}
.nav-link-item:hover{color:var(--nav-text);background:rgba(16,32,64,.05)}
.nav-link-item.active{color:var(--primary);font-weight:600}
.nav-link-item.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-2));
}
.header-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.nav-search{
  display:flex;align-items:center;gap:9px;width:250px;height:42px;padding:0 16px;
  background:#fff;border:1px solid rgba(16,32,64,.14);border-radius:var(--r-pill);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.nav-search i{color:var(--nav-text-2);font-size:13px}
.nav-search input{
  border:0;outline:0;background:transparent;width:100%;font-size:14px;color:var(--nav-text);
}
.nav-search input::placeholder{color:#8D99AE}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(47,184,255,.18)}
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:0 22px;height:44px;border:0;border-radius:var(--r-btn);
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  color:#fff;font-size:15px;font-weight:600;letter-spacing:.01em;
  box-shadow:0 12px 26px -12px rgba(47,184,255,.9);
  transition:transform .25s var(--ease),filter .25s var(--ease),box-shadow .25s var(--ease);
  cursor:pointer;
}
.btn-glow:hover{color:#fff;filter:brightness(1.06);transform:translateY(-1px);box-shadow:var(--sh-glow)}
.btn-glow:active{transform:translateY(1px)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:0 22px;height:44px;border-radius:var(--r-btn);
  background:var(--surface);border:1px solid var(--line-strong);color:var(--text);
  font-size:15px;font-weight:600;transition:all .25s var(--ease);
}
.btn-ghost:hover{color:var(--text);border-color:var(--primary);background:var(--surface-2);transform:translateY(-1px)}
.btn-lg{height:52px;padding:0 30px;font-size:16px;border-radius:14px}
.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;
  border-radius:11px;border:1px solid rgba(16,32,64,.14);background:#fff;color:var(--nav-text);
}
@media (max-width:1199.98px){.nav-search{width:190px}}
@media (max-width:991.98px){.header-inner{height:64px;gap:14px}}

/* 移动端抽屉 */
.nav-drawer{
  width:min(88vw,360px);color:var(--text);border-left:1px solid var(--line)!important;
  background:linear-gradient(165deg,rgba(10,18,38,.99),rgba(5,10,24,.99));
  backdrop-filter:blur(18px);
}
.nav-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 22px}
.nav-drawer .offcanvas-title{font-size:17px;font-weight:700;color:var(--text)}
.nav-drawer .btn-close{filter:invert(1) grayscale(1) opacity(.7)}
.drawer-search{
  display:flex;align-items:center;gap:10px;margin:20px 22px 8px;padding:0 16px;height:46px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-pill);
}
.drawer-search i{color:var(--text-3)}
.drawer-search input{background:transparent;border:0;outline:0;color:var(--text);width:100%;font-size:14px}
.drawer-search input::placeholder{color:var(--text-3)}
.drawer-nav{padding:10px 14px 20px;display:flex;flex-direction:column;gap:4px}
.drawer-nav a{
  padding:13px 16px;border-radius:12px;font-size:16px;font-weight:500;color:var(--text-2);
  border:1px solid transparent;
}
.drawer-nav a:hover{background:var(--surface);color:var(--text)}
.drawer-nav a.active{color:var(--primary);background:rgba(47,184,255,.10);border-color:rgba(47,184,255,.28)}
.drawer-cta{margin:6px 22px 26px}

/* ============ 页头 ============ */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.page-hero__bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  transform:scale(1.02);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(5,10,24,.62),rgba(5,10,24,.94)),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:auto,64px 64px,64px 64px;
}
.page-hero__inner{position:relative;z-index:2;padding:54px 24px 58px;max-width:1280px;margin:0 auto}
@media (min-width:1400px){.page-hero__inner{max-width:1320px}}
.breadcrumb-nav{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);margin-bottom:20px;flex-wrap:wrap}
.breadcrumb-nav a{color:var(--text-2)}
.breadcrumb-nav a:hover{color:var(--primary)}
.breadcrumb-nav .sep{color:var(--text-3);opacity:.6}
.breadcrumb-nav li[aria-current]{color:var(--text)}
.page-hero h1{font-size:clamp(30px,4.4vw,48px);font-weight:800;line-height:1.16;max-width:900px}
.page-hero__lead{margin-top:16px;font-size:17px;color:var(--text-2);max-width:720px;line-height:1.8}
.hero-metrics{
  display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;
}
.metric-pill{
  display:flex;flex-direction:column;gap:2px;padding:14px 22px;border-radius:var(--r-sm);
  background:var(--surface);border:1px solid var(--line);
}
.metric-pill b{font-size:24px;font-weight:800;color:var(--accent);font-variant-numeric:tabular-nums;line-height:1.2}
.metric-pill span{font-size:13px;color:var(--text-3)}

/* ============ 通用板块 ============ */
.section{padding:96px 0;position:relative}
.section--alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
@media (max-width:991.98px){.section{padding:64px 0}}
@media (max-width:575.98px){.section{padding:56px 0}}
.section-head{max-width:760px;margin-bottom:52px}
.section-tag{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.08em;
  color:var(--primary);background:rgba(47,184,255,.12);border:1px solid rgba(47,184,255,.26);
  padding:5px 12px;border-radius:var(--r-pill);margin-bottom:18px;
}
.section-head h2{font-size:clamp(24px,3vw,36px);font-weight:700;line-height:1.24}
.section-head p{margin-top:16px;color:var(--text-2);font-size:16px;line-height:1.85}

/* ============ 交错图文 ============ */
.zigzag{display:flex;flex-direction:column;gap:34px}
.zig-item{
  display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:0;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-card);
  transition:transform .32s var(--ease),border-color .32s var(--ease),box-shadow .32s var(--ease);
}
.zig-item:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 28px 56px -24px rgba(0,0,0,.85)}
.zig-item:nth-child(even) .zig-media{order:2}
.zig-media{position:relative;min-height:280px;background:var(--bg-2);overflow:hidden}
.zig-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;transition:transform .5s var(--ease)}
.zig-item:hover .zig-media img{transform:scale(1.04)}
.zig-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,10,24,.10),rgba(5,10,24,.45));
}
.zig-media__no{
  position:absolute;z-index:2;left:20px;top:20px;width:44px;height:44px;border-radius:13px;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:16px;
  color:#04101F;background:linear-gradient(135deg,var(--accent),#FFE0A3);
  box-shadow:0 10px 24px -10px rgba(255,194,75,.9);font-variant-numeric:tabular-nums;
}
.zig-body{padding:40px 44px;display:flex;flex-direction:column;justify-content:center;gap:16px}
.zig-body h3{font-size:22px;font-weight:700;line-height:1.4}
.zig-body p{color:var(--text-2);font-size:15.5px;line-height:1.9}
.zig-list{display:flex;flex-direction:column;gap:10px;margin-top:6px}
.zig-list li{position:relative;padding-left:22px;font-size:15px;color:var(--text-2)}
.zig-list li::before{
  content:"";position:absolute;left:0;top:11px;width:10px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-2));
}
.zig-list li b{color:var(--text);font-weight:600}
@media (max-width:991.98px){
  .zig-item{grid-template-columns:1fr}
  .zig-item:nth-child(even) .zig-media{order:0}
  .zig-media{min-height:220px}
  .zig-body{padding:28px 24px}
}
@media (max-width:575.98px){
  .zig-media{min-height:190px}
  .zig-body{padding:24px 18px}
  .zig-body h3{font-size:19px}
}

/* ============ 对比清单 ============ */
.compare-wrap{
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  background:var(--surface);box-shadow:var(--sh-card);
}
.compare-scroll{overflow-x:auto}
.compare-grid{min-width:820px}
.compare-row{
  display:grid;grid-template-columns:1.15fr .85fr .8fr 1fr 1.2fr;
  align-items:center;
}
.compare-row + .compare-row{border-top:1px solid var(--line)}
.compare-row--head{background:rgba(255,255,255,.06)}
.compare-row--head span{font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--text-3);text-transform:uppercase}
.compare-cell{padding:20px 24px;font-size:15px;color:var(--text-2)}
.compare-row--head .compare-cell{padding:16px 24px}
.compare-cell--name{color:var(--text);font-weight:600;display:flex;align-items:center;gap:10px}
.compare-dot{width:9px;height:9px;border-radius:50%;flex:0 0 auto}
.dot-a{background:var(--primary);box-shadow:0 0 12px rgba(47,184,255,.9)}
.dot-b{background:var(--primary-2);box-shadow:0 0 12px rgba(123,92,255,.9)}
.dot-c{background:var(--accent);box-shadow:0 0 12px rgba(255,194,75,.9)}
.dot-d{background:var(--ok);box-shadow:0 0 12px rgba(46,230,168,.9)}
.compare-row:hover{background:rgba(255,255,255,.035)}
.compare-tag{
  display:inline-block;font-size:12px;font-weight:600;padding:4px 10px;border-radius:var(--r-pill);
  background:rgba(47,184,255,.12);color:var(--primary);border:1px solid rgba(47,184,255,.24);
}
.compare-tag--gold{background:rgba(255,194,75,.12);color:var(--accent);border-color:rgba(255,194,75,.26)}
.compare-note{margin-top:18px;font-size:13px;color:var(--text-3)}

/* ============ 上手顺序 ============ */
.flow-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.flow-item{
  position:relative;padding:26px 22px;border-radius:var(--r-card);
  background:var(--surface);border:1px solid var(--line);
  transition:transform .3s var(--ease),border-color .3s var(--ease);
}
.flow-item:hover{transform:translateY(-4px);border-color:var(--line-strong)}
.flow-item__num{
  display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:11px;
  font-size:14px;font-weight:800;color:var(--primary);background:rgba(47,184,255,.14);
  border:1px solid rgba(47,184,255,.3);margin-bottom:14px;font-variant-numeric:tabular-nums;
}
.flow-item h3{font-size:17px;font-weight:600;margin-bottom:8px}
.flow-item p{font-size:14.5px;color:var(--text-2);line-height:1.8}
.flow-item::after{
  content:"";position:absolute;right:-12px;top:44px;width:12px;height:2px;
  background:linear-gradient(90deg,rgba(47,184,255,.6),rgba(123,92,255,.15));
}
.flow-item:last-child::after{display:none}
@media (max-width:991.98px){
  .flow-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .flow-item:nth-child(2)::after{display:none}
}
@media (max-width:575.98px){
  .flow-strip{grid-template-columns:1fr}
  .flow-item::after{display:none}
}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:52px;align-items:start}
.faq-aside{position:sticky;top:104px}
.faq-aside h2{font-size:clamp(24px,3vw,34px);line-height:1.26}
.faq-aside p{margin-top:16px;color:var(--text-2);font-size:15.5px}
.faq-aside .btn-ghost{margin-top:24px}
.faq-accordion .accordion-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-sm);
  margin-bottom:14px;overflow:hidden;
}
.faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)){
  border-color:rgba(47,184,255,.34);box-shadow:0 16px 34px -22px rgba(47,184,255,.7);
}
.faq-accordion .accordion-button{
  position:relative;background:transparent;color:var(--text);font-weight:600;font-size:16.5px;
  padding:20px 56px 20px 26px;box-shadow:none;line-height:1.6;
}
.faq-accordion .accordion-button::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:0 3px 3px 0;
  background:linear-gradient(180deg,var(--primary),var(--primary-2));opacity:0;transition:opacity .28s var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--primary)}
.faq-accordion .accordion-button:not(.collapsed)::before{opacity:1}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:2px solid var(--primary);outline-offset:-2px}
.faq-accordion .accordion-button::after{
  content:"";position:absolute;right:26px;top:50%;width:10px;height:10px;
  border-right:2px solid var(--primary);border-bottom:2px solid var(--primary);
  transform:translateY(-70%) rotate(45deg);background:none;
  transition:transform .3s var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:translateY(-30%) rotate(-135deg)}
.faq-accordion .accordion-body{
  padding:0 26px 22px;color:var(--text-2);font-size:15.5px;line-height:1.9;
}
@media (max-width:991.98px){
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .faq-aside{position:static}
}

/* ============ CTA ============ */
.cta-panel{
  position:relative;overflow:hidden;text-align:center;
  padding:64px 40px;border-radius:28px;
  background:linear-gradient(160deg,rgba(16,27,54,.9),rgba(10,18,38,.94));
  border:1px solid var(--line-strong);
  box-shadow:0 30px 70px -34px rgba(47,184,255,.55), inset 0 1px 0 rgba(255,255,255,.07);
}
.cta-panel::before{
  content:"";position:absolute;inset:0;opacity:.22;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.cta-panel::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(600px 220px at 50% 0%,rgba(47,184,255,.22),transparent 70%);
}
.cta-panel > *{position:relative;z-index:2}
.cta-panel h2{font-size:clamp(24px,3.2vw,36px);line-height:1.24;max-width:760px;margin:0 auto}
.cta-panel p{margin:18px auto 0;max-width:620px;color:var(--text-2);font-size:16px}
.cta-panel .btn-glow{margin-top:32px}
.cta-note{margin-top:20px!important;font-size:13px;color:var(--text-3)}
@media (max-width:575.98px){.cta-panel{padding:44px 22px;border-radius:22px}}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-0);border-top:1px solid var(--line);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:44px}
.footer-brand .brand{margin-bottom:18px}
.footer-brand .brand__text{color:var(--text);font-size:18px}
.footer-brand p{font-size:14.5px;color:var(--text-3);line-height:1.85;max-width:300px}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text);margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14.5px;color:var(--text-3)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:56px;padding:24px 0;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13.5px;color:var(--text-3)}
.footer-bottom ul{display:flex;gap:22px;flex-wrap:wrap}
.footer-bottom a{font-size:13.5px;color:var(--text-3)}
.footer-bottom a:hover{color:var(--primary)}
@media (max-width:991.98px){.footer-grid{grid-template-columns:1fr 1fr;gap:36px}}
@media (max-width:575.98px){
  .site-footer{padding-top:52px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --bg-0:#050A18;
  --bg-1:#0A1226;
  --bg-2:#101B36;
  --surface:rgba(255,255,255,.055);
  --surface-2:rgba(255,255,255,.09);
  --line:rgba(255,255,255,.12);
  --line-strong:rgba(255,255,255,.22);
  --primary:#2FB8FF;
  --primary-2:#7B5CFF;
  --accent:#FFC24B;
  --ok:#2EE6A8;
  --warn:#FFB020;
  --danger:#FF5C7A;
  --text:#E9EFFB;
  --text-2:#A7B6D4;
  --text-3:#6E7E9E;
  --nav-bg:rgba(255,255,255,.94);
  --r-card:20px;
  --r-sm:12px;
  --r-btn:12px;
  --r-pill:999px;
  --r-img:16px;
  --sh-card:0 20px 44px -20px rgba(0,0,0,.7);
  --sh-glow:0 0 0 1px rgba(47,184,255,.35),0 14px 34px -10px rgba(47,184,255,.45);
  --ease:cubic-bezier(.22,.68,.32,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(900px 520px at 12% -6%,rgba(47,184,255,.16),transparent 62%),
    radial-gradient(760px 480px at 92% 4%,rgba(123,92,255,.14),transparent 60%);
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
a:hover{color:var(--primary)}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.02em}
p{margin:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.container{--bs-gutter-x:0;width:100%;max-width:1280px !important;margin-inline:auto;padding-inline:24px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:var(--nav-bg);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(16,32,64,.08);
  box-shadow:0 6px 22px rgba(10,20,50,.10);
  transition:box-shadow .3s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 12px 32px rgba(10,20,50,.18)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height .3s var(--ease)}
.site-header.is-scrolled .header-inner{height:66px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;color:#16203A;font-weight:700;font-size:18px;letter-spacing:.02em}
.brand:hover{color:#16203A}
.brand__mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  color:#fff;font-size:15px;box-shadow:0 8px 18px -8px rgba(47,184,255,.9);
}
.brand__text{white-space:nowrap}
.nav-links{align-items:center;gap:4px;margin-left:6px}
.nav-link-item{
  position:relative;display:inline-block;padding:8px 12px;font-size:15px;font-weight:500;
  color:#5A6A85;border-radius:8px;transition:color .25s var(--ease);
}
.nav-link-item::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-2));
  transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease);
}
.nav-link-item:hover{color:var(--primary)}
.nav-link-item:hover::after,.nav-link-item.active::after{transform:scaleX(1)}
.nav-link-item.active{color:var(--primary);font-weight:600}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.search-box{
  position:relative;display:flex;align-items:center;width:252px;height:44px;
  border-radius:var(--r-pill);background:#F1F5FB;border:1px solid rgba(16,32,64,.08);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease);
}
.search-box i{position:absolute;left:16px;color:#8797B0;font-size:13px;pointer-events:none}
.search-box input{
  width:100%;height:100%;border:0;background:transparent;outline:none;
  padding:0 16px 0 40px;font-size:14px;color:#16203A;
}
.search-box input::placeholder{color:#98A6BC}
.search-box:focus-within{background:#fff;border-color:var(--primary);box-shadow:0 0 0 4px rgba(47,184,255,.16)}
.btn-primary-cta{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);border:0;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  color:#fff;font-size:15px;font-weight:600;letter-spacing:.02em;white-space:nowrap;
  box-shadow:0 12px 26px -12px rgba(47,184,255,.9);
  transition:transform .28s var(--ease),filter .28s var(--ease),box-shadow .28s var(--ease);
}
.btn-primary-cta:hover{color:#fff;transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 18px 34px -12px rgba(47,184,255,.95)}
.btn-primary-cta:active{transform:translateY(1px)}
.nav-toggle{
  margin-left:auto;width:44px;height:44px;border-radius:12px;border:1px solid rgba(16,32,64,.1);
  background:#F1F5FB;color:#16203A;display:grid;place-items:center;font-size:17px;
  transition:background .25s var(--ease),border-color .25s var(--ease);
}
.nav-toggle:hover{background:#E6EEF9;border-color:rgba(47,184,255,.45)}
.mobile-nav{background:rgba(8,15,34,.97);backdrop-filter:blur(18px);color:var(--text);border:0;width:min(340px,86vw)}
.mobile-nav .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 22px}
.mobile-nav .offcanvas-body{padding:20px 22px 36px}
.mobile-nav .mobile-search{width:100%;margin-bottom:20px}
.mobile-nav .mobile-search.search-box{background:rgba(255,255,255,.08);border-color:var(--line)}
.mobile-nav .mobile-search input{color:var(--text)}
.mobile-nav .mobile-search input::placeholder{color:var(--text-3)}
.mobile-nav .mobile-search i{color:var(--text-3)}
.mobile-links{display:flex;flex-direction:column;gap:4px;margin-bottom:24px}
.mobile-links a{
  padding:13px 14px;border-radius:var(--r-sm);font-size:15px;font-weight:500;
  color:var(--text-2);border:1px solid transparent;transition:.25s var(--ease);
}
.mobile-links a:hover,.mobile-links a.active{
  color:#fff;background:var(--surface-2);border-color:var(--line);
}
.mobile-cta{width:100%}

/* ============ 面包屑 ============ */
.crumbs{padding:22px 0 0;position:relative;z-index:1}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--text-3)}
.breadcrumb-list a{color:var(--text-3);transition:color .25s var(--ease)}
.breadcrumb-list a:hover{color:var(--primary)}
.crumb-sep{color:rgba(255,255,255,.22);font-size:10px}
.crumb-current{color:var(--text-2);max-width:min(520px,70vw);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 文章页头 ============ */
.article-hero{
  position:relative;
  padding:30px 0 8px;
  overflow:hidden;
}
.article-hero::before{
  content:"";
  position:absolute;
  inset:-160px 0 auto 0;
  height:520px;
  background:url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  opacity:.14;
  filter:saturate(1.1);
  z-index:0;
  -webkit-mask-image:linear-gradient(180deg,#000 0%,transparent 88%);
  mask-image:linear-gradient(180deg,#000 0%,transparent 88%);
}
.article-hero::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:linear-gradient(180deg,#000 0%,transparent 92%);
  mask-image:linear-gradient(180deg,#000 0%,transparent 92%);
  pointer-events:none;
}
.article-hero .container{position:relative;z-index:1}
.article-title{
  font-size:clamp(28px,3.6vw,44px);
  font-weight:800;
  line-height:1.22;
  letter-spacing:.02em;
  margin:0 0 20px;
  max-width:900px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  font-size:13px;line-height:1.6;color:var(--text-3);
  padding-bottom:26px;
  border-bottom:1px solid var(--line);
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px}
.article-meta .meta-item i{color:var(--primary);font-size:12px}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  background:rgba(47,184,255,.12);color:var(--primary);
  font-size:12px;font-weight:600;line-height:1.6;
}
.badge-accent{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  background:rgba(255,194,75,.13);color:var(--accent);
  font-size:12px;font-weight:600;line-height:1.6;
}

/* ============ 布局 ============ */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:36px;
  padding:44px 0 0;
  position:relative;
  z-index:1;
}
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,1fr) 320px;gap:48px;padding-top:52px}
}
.article-main{min-width:0}
.article-panel{
  max-width:820px;
  margin:0 auto;
  padding:42px 44px 46px;
  border-radius:var(--r-card);
  background:linear-gradient(180deg,rgba(255,255,255,.075),rgba(255,255,255,.045));
  border:1px solid var(--line);
  box-shadow:var(--sh-card),inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
}
@media (max-width:767px){
  .article-panel{padding:26px 20px 30px;border-radius:var(--r-sm)}
}

/* ============ 正文排版 ============ */
.article-body{font-size:16px;line-height:1.9;color:var(--text-2)}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.15em}
.article-body h2{
  position:relative;
  font-size:clamp(21px,2.2vw,25px);
  font-weight:700;
  color:var(--text);
  line-height:1.36;
  margin:2.1em 0 .85em;
  padding-left:16px;
  scroll-margin-top:110px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--primary),var(--primary-2));
}
.article-body h3{
  font-size:18px;font-weight:600;color:var(--text);line-height:1.5;
  margin:1.7em 0 .6em;scroll-margin-top:110px;
}
.article-body h4{font-size:16px;font-weight:600;color:var(--text);margin:1.4em 0 .5em}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(47,184,255,.35);transition:.25s var(--ease)}
.article-body a:hover{color:#8AD8FF;border-bottom-color:#8AD8FF}
.article-body strong{color:var(--text);font-weight:600}
.article-body em{font-style:normal;color:var(--accent)}
.article-body ul,.article-body ol{margin:0 0 1.2em}
.article-body li{position:relative;padding-left:24px;margin-bottom:.55em}
.article-body ul > li::before{
  content:"";position:absolute;left:4px;top:.72em;width:7px;height:7px;border-radius:2px;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
}
.article-body ol{counter-reset:olc}
.article-body ol > li{counter-increment:olc}
.article-body ol > li::before{
  content:counter(olc);
  position:absolute;left:0;top:.12em;
  width:18px;height:18px;border-radius:6px;
  display:grid;place-items:center;
  font-size:11px;font-weight:700;line-height:1;
  background:rgba(47,184,255,.14);color:var(--primary);
}
.article-body blockquote{
  margin:1.5em 0;padding:18px 22px;
  border-left:3px solid var(--primary);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  background:rgba(47,184,255,.08);
  color:var(--text);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{
  width:100%;border-collapse:separate;border-spacing:0;
  margin:1.6em 0;font-size:14.5px;
  border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden;
}
.article-body thead th{
  background:rgba(47,184,255,.13);color:var(--text);font-weight:600;text-align:left;
  padding:12px 16px;border-bottom:1px solid var(--line);
}
.article-body tbody td{padding:12px 16px;border-top:1px solid rgba(255,255,255,.07);color:var(--text-2)}
.article-body tbody tr:first-child td{border-top:0}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.028)}
.article-body pre{
  margin:1.5em 0;padding:16px 18px;border-radius:var(--r-sm);
  background:#060C1C;border:1px solid var(--line);
  overflow-x:auto;font-size:13px;line-height:1.7;color:#BFE4FF;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:13px;padding:2px 6px;border-radius:6px;
  background:rgba(255,255,255,.08);color:#9FD8FF;
}
.article-body pre code{background:transparent;padding:0;color:inherit}
.article-body img{
  max-width:100%;height:auto;margin:1.6em auto;
  border-radius:var(--r-img);border:1px solid var(--line);
}
.article-body figure{margin:1.6em 0}
.article-body figure img{margin:0 auto}
.article-body figcaption{
  margin-top:10px;text-align:center;font-size:13px;color:var(--text-3);
}
.article-body hr{
  height:1px;border:0;margin:2.2em 0;
  background:linear-gradient(90deg,transparent,var(--line-strong),transparent);
}

/* 空态 */
.article-empty{
  text-align:center;
  padding:52px 24px;
  border:1px dashed var(--line-strong);
  border-radius:var(--r-card);
  background:rgba(255,255,255,.03);
}
.article-empty .empty-icon{
  width:64px;height:64px;margin:0 auto 18px;border-radius:20px;
  display:grid;place-items:center;
  background:rgba(47,184,255,.12);color:var(--primary);font-size:24px;
}
.article-empty h2{font-size:20px;color:var(--text);margin-bottom:10px;padding:0}
.article-empty h2::before{display:none}
.article-empty p{color:var(--text-2);margin-bottom:22px}

/* ============ 文末模块 ============ */
.article-foot{max-width:820px;margin:32px auto 0;display:flex;flex-direction:column;gap:22px}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.tag-row .tag-label{font-size:13px;color:var(--text-3);margin-right:2px}
.tag-pill{
  display:inline-flex;align-items:center;
  padding:6px 14px;border-radius:var(--r-pill);
  font-size:13px;font-weight:500;
  background:var(--surface);border:1px solid var(--line);color:var(--text-2);
  transition:.25s var(--ease);
}
.tag-pill:hover{color:var(--primary);border-color:rgba(47,184,255,.45);background:rgba(47,184,255,.09)}
.post-nav{display:grid;grid-template-columns:1fr;gap:14px}
@media (min-width:768px){.post-nav{grid-template-columns:1fr 1fr}}
.post-nav-card{
  display:flex;align-items:center;gap:14px;
  padding:18px 20px;border-radius:var(--r-sm);
  background:var(--surface);border:1px solid var(--line);
  transition:transform .32s var(--ease),border-color .32s var(--ease),box-shadow .32s var(--ease),background .32s var(--ease);
}
.post-nav-card:hover{
  transform:translateY(-4px);border-color:var(--line-strong);
  background:var(--surface-2);box-shadow:var(--sh-card);
}
.post-nav-card .pn-icon{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;display:grid;place-items:center;
  background:rgba(47,184,255,.12);color:var(--primary);font-size:14px;
}
.post-nav-card .pn-label{display:block;font-size:12px;color:var(--text-3);margin-bottom:2px}
.post-nav-card .pn-title{font-size:15px;font-weight:600;color:var(--text);line-height:1.45}
.back-row{display:flex;justify-content:center}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  background:transparent;border:1px solid var(--line-strong);color:var(--text-2);
  font-size:14px;font-weight:600;
  transition:.28s var(--ease);
}
.btn-ghost:hover{color:var(--primary);border-color:var(--primary);box-shadow:0 0 0 4px rgba(47,184,255,.12)}

/* ============ 侧栏 ============ */
.article-side{min-width:0;display:flex;flex-direction:column;gap:22px}
@media (min-width:1200px){
  .article-side{position:sticky;top:100px;align-self:start;max-height:calc(100vh - 120px);overflow-y:auto;padding-right:4px}
  .article-side::-webkit-scrollbar{width:6px}
  .article-side::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:6px}
}
.side-card{
  border-radius:var(--r-card);
  background:var(--surface);
  border:1px solid var(--line);
  box-shadow:var(--sh-card),inset 0 1px 0 rgba(255,255,255,.06);
  padding:22px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.side-title{
  display:flex;align-items:center;gap:9px;
  font-size:14px;font-weight:700;color:var(--text);
  letter-spacing:.04em;margin-bottom:16px;
}
.side-title i{color:var(--primary);font-size:13px}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-item a{
  display:block;padding:8px 12px;border-radius:10px;
  font-size:13.5px;line-height:1.55;color:var(--text-2);
  border-left:2px solid transparent;
  transition:.25s var(--ease);
}
.toc-item a:hover{color:var(--primary);background:rgba(47,184,255,.08);border-left-color:var(--primary)}
.toc-item--sub a{padding-left:24px;font-size:13px;color:var(--text-3)}
.side-post{display:flex;gap:12px;padding:10px 0;border-bottom:1px solid rgba(255,255,255,.07)}
.side-post:last-child{border-bottom:0;padding-bottom:0}
.side-post img{
  width:64px;height:48px;flex:0 0 64px;object-fit:cover;
  border-radius:10px;border:1px solid var(--line);background:var(--bg-2);
}
.side-post .sp-title{
  font-size:13.5px;line-height:1.5;color:var(--text-2);font-weight:500;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .25s var(--ease);
}
.side-post:hover .sp-title{color:var(--primary)}
.side-cta{
  position:relative;overflow:hidden;
  border-radius:var(--r-card);
  padding:24px 22px;
  background:linear-gradient(160deg,rgba(47,184,255,.18),rgba(123,92,255,.16));
  border:1px solid rgba(47,184,255,.3);
  box-shadow:var(--sh-glow);
}
.side-cta::after{
  content:"";position:absolute;right:-40px;bottom:-50px;width:150px;height:150px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,194,75,.35),transparent 68%);
}
.side-cta h3{font-size:17px;color:var(--text);margin-bottom:8px;position:relative;z-index:1}
.side-cta p{font-size:13px;color:var(--text-2);line-height:1.7;margin-bottom:16px;position:relative;z-index:1}
.side-cta .btn-primary-cta{position:relative;z-index:1;width:100%}

/* ============ 相关推荐 / 通用卡片 ============ */
.section{padding:76px 0 0;position:relative;z-index:1}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:30px}
.section-head h2{font-size:clamp(22px,2.6vw,30px);line-height:1.28}
.section-head p{font-size:14px;color:var(--text-3);margin-top:8px}
.link-more{
  display:inline-flex;align-items:center;gap:7px;
  font-size:14px;font-weight:600;color:var(--primary);
  transition:gap .25s var(--ease),color .25s var(--ease);
}
.link-more:hover{gap:12px;color:#8AD8FF}
.card-grid{display:grid;grid-template-columns:1fr;gap:22px}
@media (min-width:768px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:992px){.card-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.info-card{
  display:flex;flex-direction:column;
  border-radius:var(--r-card);
  background:var(--surface);
  border:1px solid var(--line);
  box-shadow:var(--sh-card),inset 0 1px 0 rgba(255,255,255,.06);
  overflow:hidden;
  transition:transform .32s var(--ease),border-color .32s var(--ease),box-shadow .32s var(--ease);
}
.info-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 26px 50px -22px rgba(0,0,0,.85)}
.info-card__media{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(140deg,var(--bg-2),#0b1densities);background:linear-gradient(140deg,var(--bg-2),#0B132A)}
.info-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease)}
.info-card:hover .info-card__media img{transform:scale(1.04)}
.info-card__media::before{
  content:"";position:absolute;inset:0;z-index:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:32px 32px;
}
.info-card__body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.info-card__body h3{
  font-size:18px;line-height:1.45;font-weight:600;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-card__body p{
  font-size:14px;line-height:1.75;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-card__meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.info-card__meta .arrow{color:var(--primary);transition:transform .3s var(--ease)}
.info-card:hover .info-card__meta .arrow{transform:translateX(4px)}

/* ============ CTA ============ */
.cta-band{padding:84px 0 0;position:relative;z-index:1}
.cta-pill{
  position:relative;overflow:hidden;
  border-radius:var(--r-card);
  padding:56px 32px;
  text-align:center;
  background:
    linear-gradient(180deg,rgba(5,10,24,.86),rgba(5,10,24,.94)),
    url("/assets/images/backpic/back-3.png") center/cover no-repeat;
  border:1px solid var(--line-strong);
  box-shadow:var(--sh-card);
}
.cta-pill::before{
  content:"";position:absolute;inset:0;border-radius:var(--r-card);padding:1px;
  background:linear-gradient(135deg,rgba(47,184,255,.75),rgba(123,92,255,.55),rgba(255,194,75,.5));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
  pointer-events:none;
}
.cta-pill h2{font-size:clamp(24px,3vw,34px);line-height:1.24;color:#fff;position:relative;z-index:1}
.cta-pill p{
  max-width:640px;margin:16px auto 0;font-size:15px;line-height:1.8;color:var(--text-2);
  position:relative;z-index:1;
}
.cta-actions{
  margin-top:30px;display:flex;flex-wrap:wrap;justify-content:center;gap:14px;
  position:relative;z-index:1;
}
.cta-note{margin-top:20px;font-size:12.5px;color:var(--text-3);position:relative;z-index:1}
.btn-secondary-cta{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--r-btn);
  background:rgba(255,255,255,.06);border:1px solid var(--line-strong);color:var(--text);
  font-size:15px;font-weight:600;transition:.28s var(--ease);
}
.btn-secondary-cta:hover{color:#fff;background:rgba(255,255,255,.12);border-color:var(--primary)}
.cta-pill .btn-primary-cta{height:46px;padding:0 28px}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:96px;
  background:var(--bg-0);
  border-top:1px solid var(--line);
  padding:64px 0 0;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:34px;
  padding-bottom:44px;
}
@media (min-width:576px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:992px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}}
.footer-brand .brand{color:var(--text);font-size:18px}
.footer-brand .brand:hover{color:var(--text)}
.footer-brand p{margin-top:16px;font-size:13.5px;line-height:1.8;color:var(--text-3);max-width:320px}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;letter-spacing:.04em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:13.5px;color:var(--text-3);transition:color .25s var(--ease)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0 30px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
}
.footer-bottom p{font-size:12.5px;color:var(--text-3)}
.footer-bottom ul{display:flex;flex-wrap:wrap;gap:18px}
.footer-bottom a{font-size:12.5px;color:var(--text-3);transition:color .25s var(--ease)}
.footer-bottom a:hover{color:var(--primary)}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --bg-0:#050A18;--bg-1:#0A1226;--bg-2:#101B36;
  --surface:rgba(255,255,255,.055);--surface-2:rgba(255,255,255,.09);
  --line:rgba(255,255,255,.12);--line-strong:rgba(255,255,255,.22);
  --primary:#2FB8FF;--primary-2:#7B5CFF;--accent:#FFC24B;
  --ok:#2EE6A8;--warn:#FFB020;--danger:#FF5C7A;
  --text:#E9EFFB;--text-2:#A7B6D4;--text-3:#6E7E9E;
  --nav-bg:rgba(255,255,255,.94);--nav-text:#16203A;--nav-text-2:#5A6A85;--nav-line:rgba(16,32,64,.08);
  --r-card:20px;--r-sm:12px;--r-btn:12px;--r-pill:999px;--r-img:16px;
  --sh-card:0 20px 44px -20px rgba(0,0,0,.7);
  --sh-glow:0 0 0 1px rgba(47,184,255,.35),0 14px 34px -10px rgba(47,184,255,.45);
  --ease:cubic-bezier(.22,.68,.32,1);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg-0);color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;line-height:1.85;letter-spacing:.01em;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(900px 520px at 12% -6%,rgba(47,184,255,.16),transparent 62%),
    radial-gradient(760px 480px at 96% 4%,rgba(123,92,255,.14),transparent 60%),
    linear-gradient(180deg,var(--bg-0),var(--bg-1) 46%,var(--bg-0));
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .28s var(--ease)}
a:hover{color:var(--primary)}
p{margin:0 0 1.15em}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.22;letter-spacing:.02em}
ul,ol{margin:0;padding:0;list-style:none}
button,input{font-family:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(47,184,255,.35);color:#fff}
.container{max-width:1280px;padding:0 24px;margin:0 auto}
@media (min-width:1400px){.container{max-width:1320px}}
@media (max-width:575.98px){.container{padding:0 16px}}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:var(--nav-bg);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--nav-line);box-shadow:0 6px 22px rgba(10,20,50,.10);
  transition:box-shadow .3s var(--ease);
}
.site-header.scrolled{box-shadow:0 12px 30px rgba(10,20,50,.18)}
.header-inner{display:flex;align-items:center;gap:26px;height:72px;transition:height .3s var(--ease)}
.site-header.scrolled .header-inner{height:64px}
.brand{display:inline-flex;align-items:center;gap:11px;flex:0 0 auto}
.brand__mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  color:#fff;font-size:16px;box-shadow:0 8px 20px -8px rgba(47,184,255,.9);
}
.brand__text{font-weight:800;font-size:19px;color:var(--nav-text);letter-spacing:.01em}
.nav-links{align-items:center;gap:4px;margin-left:8px}
.nav-link-item{
  position:relative;display:inline-block;padding:9px 14px;border-radius:10px;
  font-size:15px;font-weight:600;color:var(--nav-text-2);transition:color .28s var(--ease),background .28s var(--ease);
}
.nav-link-item::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-2));
  transform:scaleX(0);transform-origin:left;transition:transform .32s var(--ease);
}
.nav-link-item:hover{color:var(--nav-text);background:rgba(47,184,255,.08)}
.nav-link-item:hover::after{transform:scaleX(1)}
.nav-link-item.active{color:var(--primary)}
.nav-link-item.active::after{transform:scaleX(1)}
.header-right{margin-left:auto;display:flex;align-items:center;gap:14px}
.nav-search{position:relative;display:flex;align-items:center}
.nav-search i{position:absolute;left:14px;color:var(--nav-text-2);font-size:13px}
.nav-search input{
  width:250px;height:44px;border-radius:var(--r-pill);border:1px solid var(--nav-line);
  background:#F2F5FB;padding:0 16px 0 36px;font-size:14px;color:var(--nav-text);
  transition:border-color .28s var(--ease),box-shadow .28s var(--ease),background .28s var(--ease);
}
.nav-search input::placeholder{color:#93A0B8}
.nav-search input:focus{
  outline:none;background:#fff;border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(47,184,255,.18);
}
.btn-grad{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);border:0;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  color:#fff;font-weight:700;font-size:15px;
  box-shadow:0 12px 28px -12px rgba(47,184,255,.95);
  transition:transform .28s var(--ease),filter .28s var(--ease),box-shadow .28s var(--ease);
}
.btn-grad:hover{color:#fff;filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 16px 34px -12px rgba(47,184,255,1)}
.btn-grad:active{transform:translateY(1px)}
.nav-toggle{
  margin-left:auto;width:46px;height:46px;border-radius:12px;border:1px solid var(--nav-line);
  background:#F2F5FB;color:var(--nav-text);font-size:17px;display:grid;place-items:center;
}
.nav-toggle:hover{background:#E7EDF8}

/* ---------- 抽屉导航 ---------- */
.dark-drawer{
  background:linear-gradient(180deg,rgba(10,18,38,.99),rgba(5,10,24,.99));
  color:var(--text);border-right:1px solid var(--line);width:308px;
}
.dark-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 22px}
.dark-drawer .brand__text{color:#fff}
.dark-drawer .drawer-body{padding:22px}
.dark-drawer .drawer-search{position:relative;margin-bottom:20px}
.dark-drawer .drawer-search i{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--text-3);font-size:13px}
.dark-drawer .drawer-search input{
  width:100%;height:46px;border-radius:var(--r-pill);background:var(--surface);
  border:1px solid var(--line);color:var(--text);padding:0 16px 0 38px;font-size:14px;
}
.dark-drawer .drawer-search input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(47,184,255,.16)}
.dark-drawer .drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 16px;border-radius:var(--r-sm);color:var(--text-2);font-weight:600;font-size:15px;
  border:1px solid transparent;transition:all .28s var(--ease);
}
.dark-drawer .drawer-link:hover{background:var(--surface);border-color:var(--line);color:#fff}
.dark-drawer .drawer-link.active{color:var(--primary);background:rgba(47,184,255,.10);border-color:rgba(47,184,255,.28)}
.dark-drawer .btn-grad{width:100%;margin-top:20px}

/* ---------- 面包屑 ---------- */
.crumb-bar{border-bottom:1px solid var(--line);background:rgba(5,10,24,.6)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:16px 0;font-size:13px;color:var(--text-3)}
.crumb li{display:inline-flex;align-items:center;gap:8px}
.crumb li+li::before{content:"/";color:var(--text-3)}
.crumb a:hover{color:var(--primary)}
.crumb .current{color:var(--text-2)}

/* ---------- 页头 ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.page-hero__bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.page-hero__mask{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,10,24,.62),rgba(5,10,24,.94));
}
.page-hero__grid{
  position:absolute;inset:0;opacity:.35;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 28% 40%,#000,transparent 76%);
  mask-image:radial-gradient(circle at 28% 40%,#000,transparent 76%);
}
.page-hero__inner{position:relative;padding:72px 0 68px;max-width:800px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);font-size:12px;font-weight:700;letter-spacing:.06em;
  color:var(--accent);background:rgba(255,194,75,.12);border:1px solid rgba(255,194,75,.32);
  margin-bottom:18px;
}
.page-hero h1{font-size:clamp(30px,4.2vw,52px);font-weight:800;line-height:1.16;letter-spacing:.01em}
.page-hero h1 .hl{
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.page-hero__lead{margin-top:18px;font-size:16px;color:var(--text-2);max-width:640px}
.page-hero__stats{display:flex;flex-wrap:wrap;gap:38px;margin-top:34px}
.mini-stat b{display:block;font-size:clamp(24px,3vw,34px);font-weight:800;font-variant-numeric:tabular-nums;
  background:linear-gradient(120deg,#fff,var(--primary));-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.1}
.mini-stat span{font-size:13px;color:var(--text-3)}

/* ---------- 通用板块 ---------- */
.section{padding:100px 0}
.section--tight{padding:80px 0}
.section-head{max-width:720px;margin-bottom:46px}
.section-head h2{font-size:clamp(25px,3vw,38px);font-weight:700}
.section-head p{margin-top:14px;color:var(--text-2);font-size:15px}
.kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.14em;
  color:var(--primary);margin-bottom:14px;text-transform:uppercase;
}
.kicker::before{content:"";width:22px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--primary),var(--primary-2))}
.glass{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card),inset 0 1px 0 rgba(255,255,255,.08);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
}
.badge-pill{display:inline-block;padding:4px 11px;border-radius:var(--r-pill);font-size:12px;font-weight:600;line-height:1.6}
.badge-primary{background:rgba(47,184,255,.14);color:var(--primary)}
.badge-accent{background:rgba(255,194,75,.14);color:var(--accent)}
.badge-ok{background:rgba(46,230,168,.14);color:var(--ok)}
.badge-warn{background:rgba(255,176,32,.14);color:var(--warn)}

/* ---------- 步骤区 ---------- */
.guide-wrap{display:grid;grid-template-columns:260px minmax(0,1fr);gap:44px;align-items:start}
.step-nav{position:sticky;top:100px;padding:26px 22px}
.step-nav h4{font-size:14px;color:var(--text-3);font-weight:700;letter-spacing:.1em;margin-bottom:16px}
.step-nav ol{display:flex;flex-direction:column;gap:6px;counter-reset:sn}
.step-nav a{
  display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:var(--r-sm);
  font-size:14px;font-weight:600;color:var(--text-2);border:1px solid transparent;
  transition:all .28s var(--ease);
}
.step-nav a i{font-size:11px;color:var(--primary);opacity:.75}
.step-nav a:hover{color:#fff;background:var(--surface-2);border-color:var(--line);transform:translateX(3px)}
.step-nav a.active{color:#fff;background:rgba(47,184,255,.12);border-color:rgba(47,184,255,.3)}
.step-nav .tip{margin-top:20px;padding-top:18px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);line-height:1.75}

.step-list{position:relative;display:flex;flex-direction:column;gap:26px;padding-left:4px}
.step-list::before{
  content:"";position:absolute;left:21px;top:16px;bottom:16px;width:2px;
  background:linear-gradient(180deg,rgba(47,184,255,.75),rgba(123,92,255,.55),rgba(255,255,255,.05));
}
.step-card{position:relative;display:grid;grid-template-columns:44px minmax(0,1fr);gap:22px}
.step-card__node{
  position:relative;z-index:1;width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;font-weight:800;font-size:14px;font-variant-numeric:tabular-nums;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;
  box-shadow:0 0 0 5px rgba(5,10,24,.95),0 12px 26px -10px rgba(47,184,255,.85);
}
.step-card__body{padding:24px}
.step-card__body h3{font-size:20px;margin-bottom:10px}
.step-card__body>p{color:var(--text-2);font-size:15px;margin-bottom:16px}
.tick-list{display:flex;flex-direction:column;gap:9px;margin-bottom:18px}
.tick-list li{position:relative;padding-left:24px;font-size:14px;color:var(--text-2)}
.tick-list li::before{
  content:"";position:absolute;left:2px;top:11px;width:9px;height:9px;border-radius:3px;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
}
.tick-list li b{color:var(--text);font-weight:600}
.step-card figure{margin:0;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);background:var(--bg-2)}
.step-card figure img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .5s var(--ease)}
.step-card:hover figure img{transform:scale(1.035)}
.step-card figcaption{padding:10px 14px;font-size:12.5px;color:var(--text-3);border-top:1px solid var(--line)}

/* ---------- 速查 ---------- */
.check-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.check-card{padding:24px;border-radius:var(--r-card);background:var(--surface);border:1px solid var(--line);
  box-shadow:var(--sh-card);transition:transform .32s var(--ease),border-color .32s var(--ease),box-shadow .32s var(--ease)}
.check-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 26px 50px -22px rgba(0,0,0,.85)}
.check-card__num{font-size:13px;font-weight:800;color:var(--accent);letter-spacing:.12em;margin-bottom:12px;display:block}
.check-card h3{font-size:17.5px;margin-bottom:10px}
.check-card p{font-size:14px;color:var(--text-2);margin:0}

/* ---------- 警示块 ---------- */
.notice{
  margin-top:34px;padding:26px 28px;border-radius:var(--r-card);
  background:linear-gradient(180deg,rgba(255,92,122,.08),rgba(255,92,122,.02));
  border:1px solid rgba(255,92,122,.42);
  box-shadow:0 20px 44px -24px rgba(255,92,122,.7);
}
.notice__head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.notice__head i{width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:rgba(255,92,122,.16);color:var(--danger);font-size:15px}
.notice__head h3{font-size:18px}
.notice ul{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 28px}
.notice li{position:relative;padding-left:20px;font-size:14px;color:var(--text-2)}
.notice li::before{content:"";position:absolute;left:0;top:12px;width:8px;height:2px;background:var(--danger);border-radius:2px}
.notice li b{color:var(--text);font-weight:600}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:920px;margin:0 auto}
.accordion-item{background:transparent;border:0;border-top:1px solid var(--line)}
.accordion-item:last-child{border-bottom:1px solid var(--line)}
.accordion-button{
  background:transparent;color:var(--text);font-size:16.5px;font-weight:600;
  padding:22px 8px 22px 20px;box-shadow:none;border-radius:0;position:relative;
}
.accordion-button::before{
  content:"";position:absolute;left:0;top:26px;width:3px;height:20px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--primary-2));opacity:.5;transition:opacity .28s var(--ease)
}
.accordion-button:not(.collapsed){color:var(--primary);background:rgba(47,184,255,.05)}
.accordion-button:not(.collapsed)::before{opacity:1}
.accordion-button::after{
  background-image:none;content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:12px;color:var(--text-3);width:auto;height:auto;transform:none;
  position:absolute;right:10px;top:50%;margin-top:-8px;line-height:1;
}
.accordion-button:not(.collapsed)::after{content:"\f068";color:var(--primary)}
.accordion-button:focus{box-shadow:none;border-color:transparent}
.accordion-body{padding:0 24px 24px 20px;color:var(--text-2);font-size:14.5px}
.accordion-body p:last-child{margin-bottom:0}

/* ---------- CTA ---------- */
.cta{
  position:relative;overflow:hidden;border-radius:26px;padding:60px 34px;text-align:center;
  background:var(--surface);border:1px solid var(--line);
  box-shadow:var(--sh-card);
}
.cta::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;opacity:.16;
}
.cta::after{
  content:"";position:absolute;left:50%;top:-90px;transform:translateX(-50%);
  width:520px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,184,255,.35),transparent 68%);
  filter:blur(12px);
}
.cta__inner{position:relative;z-index:1}
.cta h2{font-size:clamp(24px,3vw,34px)}
.cta p{margin:16px auto 28px;max-width:620px;color:var(--text-2);font-size:15px}
.cta__actions{display:flex;flex-wrap:wrap;justify-content:center;gap:14px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;
  border-radius:var(--r-btn);border:1px solid var(--line-strong);color:var(--text);
  font-weight:600;font-size:15px;background:transparent;
  transition:all .28s var(--ease);
}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);background:rgba(47,184,255,.08);transform:translateY(-1px)}
.cta .note{margin-top:18px;font-size:13px;color:var(--text-3)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-0);border-top:1px solid var(--line);padding:70px 0 0;margin-top:20px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand__text{color:#fff}
.footer-brand p{font-size:14px;color:var(--text-3);max-width:320px;margin:0}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:16px;letter-spacing:.04em}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:var(--text-3)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;display:flex;flex-wrap:wrap;gap:16px;
  align-items:center;justify-content:space-between;
}
.footer-bottom p{margin:0;font-size:13px;color:var(--text-3)}
.footer-bottom ul{display:flex;flex-wrap:wrap;gap:20px}
.footer-bottom a{font-size:13px;color:var(--text-3)}
.footer-bottom a:hover{color:var(--primary)}

/* ---------- 进场 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .nav-search input{width:200px}
  .guide-wrap{grid-template-columns:220px minmax(0,1fr);gap:30px}
}
@media (max-width:991.98px){
  .header-inner{height:66px}
  .site-header.scrolled .header-inner{height:62px}
  .guide-wrap{grid-template-columns:1fr;gap:26px}
  .step-nav{position:static;top:auto;padding:22px}
  .step-nav ol{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
  .check-grid{grid-template-columns:1fr 1fr}
  .notice ul{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .page-hero__inner{padding:56px 0 52px}
  .section{padding:72px 0}
  .section--tight{padding:62px 0}
}
@media (max-width:575.98px){
  .step-nav ol{grid-template-columns:1fr}
  .check-grid{grid-template-columns:1fr}
  .step-card{grid-template-columns:34px minmax(0,1fr);gap:14px}
  .step-card__node{width:34px;height:34px;font-size:12px}
  .step-list::before{left:16px}
  .step-card__body{padding:18px}
  .section{padding:56px 0}
  .section--tight{padding:52px 0}
  .page-hero__stats{gap:22px 30px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .faq-wrap{max-width:100%}
  .accordion-button{font-size:15.5px;padding:18px 6px 18px 18px}
  .cta{padding:44px 20px;border-radius:20px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --bg-0:#050A18; --bg-1:#0A1226; --bg-2:#101B36;
  --surface:rgba(255,255,255,.055); --surface-2:rgba(255,255,255,.09);
  --line:rgba(255,255,255,.12); --line-strong:rgba(255,255,255,.22);
  --primary:#2FB8FF; --primary-2:#7B5CFF; --primary-ink:#0F86C8; --accent:#FFC24B;
  --ok:#2EE6A8; --warn:#FFB020; --danger:#FF5C7A;
  --text:#E9EFFB; --text-2:#A7B6D4; --text-3:#6E7E9E;
  --nav-bg:rgba(255,255,255,.94); --nav-text:#16203A; --nav-text-2:#5A6A85;
  --nav-line:rgba(16,32,64,.08);
  --r-card:20px; --r-sm:12px; --r-btn:12px; --r-pill:999px; --r-img:16px;
  --sh-card:0 20px 44px -20px rgba(0,0,0,.7), inset 0 1px 0 rgba(255,255,255,.08);
  --sh-glow:0 0 0 1px rgba(47,184,255,.35), 0 14px 34px -10px rgba(47,184,255,.45);
  --ease:cubic-bezier(.22,.68,.32,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:16px; line-height:1.85;
  color:var(--text);
  background:var(--bg-0);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--primary);}
h1,h2,h3,h4{margin:0;letter-spacing:.01em;color:var(--text);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
.num{font-variant-numeric:tabular-nums;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

.container{max-width:1280px;padding-left:24px;padding-right:24px;margin:0 auto;}
@media (min-width:1400px){.container{max-width:1320px;}}
@media (max-width:520px){.container{padding-left:16px;padding-right:16px;}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--nav-bg);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--nav-line);
  box-shadow:0 6px 22px rgba(10,20,50,.10);
  transition:box-shadow .28s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 12px 30px rgba(10,20,50,.18);}
.header-inner{display:flex;align-items:center;gap:20px;height:70px;transition:height .28s var(--ease);}
.site-header.is-scrolled .header-inner{height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--nav-text);font-weight:700;flex:0 0 auto;}
.brand:hover{color:var(--nav-text);}
.brand__mark{
  width:34px;height:34px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;font-size:16px;
  box-shadow:0 10px 20px -10px rgba(47,184,255,.95);
}
.brand__text{font-size:18px;letter-spacing:.01em;white-space:nowrap;}

.nav-links{align-items:center;gap:4px;margin-left:6px;}
.nav-link-item{
  position:relative;display:inline-block;padding:8px 12px;border-radius:10px;
  color:var(--nav-text-2);font-size:15px;font-weight:600;white-space:nowrap;
}
.nav-link-item::after{
  content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-2));
  transform:scaleX(0);transform-origin:left;transition:transform .28s var(--ease);
}
.nav-link-item:hover{color:var(--nav-text);}
.nav-link-item:hover::after{transform:scaleX(1);}
.nav-link-item.active{color:var(--primary-ink);}
.nav-link-item.active::after{transform:scaleX(1);}

.header-right{margin-left:auto;align-items:center;gap:12px;}
.nav-search{position:relative;display:flex;align-items:center;}
.nav-search input{
  height:44px;width:252px;border-radius:var(--r-pill);
  border:1px solid rgba(16,32,64,.12);background:#F2F6FC;
  padding:0 46px 0 18px;font-size:14px;color:var(--nav-text);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
.nav-search input::placeholder{color:#8A99B3;}
.nav-search input:focus{
  outline:none;background:#fff;border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(47,184,255,.18);
}
.nav-search button{
  position:absolute;right:6px;width:34px;height:34px;border:0;border-radius:50%;
  background:transparent;color:var(--nav-text-2);cursor:pointer;transition:.2s var(--ease);
}
.nav-search button:hover{color:var(--primary);background:rgba(47,184,255,.10);}
.nav-toggle{
  margin-left:auto;width:44px;height:44px;border-radius:12px;border:1px solid rgba(16,32,64,.12);
  background:#F2F6FC;color:var(--nav-text);font-size:17px;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary-ink);}

.mob-nav{background:rgba(8,14,30,.97);backdrop-filter:blur(18px);color:var(--text);border-left:1px solid var(--line);}
.mob-nav .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.mob-nav .brand,.mob-nav .brand:hover{color:var(--text);}
.mob-nav .btn-close{filter:invert(1) grayscale(1);opacity:.8;}
.mob-nav .offcanvas-body{padding:22px 20px;}
.mob-search{position:relative;margin-bottom:20px;}
.mob-search input{
  width:100%;height:46px;border-radius:var(--r-pill);padding:0 46px 0 18px;
  background:var(--surface);border:1px solid var(--line);color:var(--text);font-size:14px;
}
.mob-search input::placeholder{color:var(--text-3);}
.mob-search input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(47,184,255,.16);}
.mob-search button{position:absolute;right:6px;top:6px;width:34px;height:34px;border:0;border-radius:50%;background:transparent;color:var(--text-3);}
.mob-links{display:flex;flex-direction:column;gap:6px;margin-bottom:22px;}
.mob-links a{
  padding:13px 14px;border-radius:12px;border:1px solid transparent;
  color:var(--text-2);font-weight:600;font-size:15px;
}
.mob-links a:hover{background:var(--surface);border-color:var(--line);color:var(--text);}
.mob-links a.active{background:rgba(47,184,255,.12);border-color:rgba(47,184,255,.35);color:var(--primary);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),filter .22s var(--ease);
}
.btn.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  color:#fff;box-shadow:var(--sh-glow);
}
.btn.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);color:#fff;box-shadow:0 0 0 1px rgba(47,184,255,.5),0 18px 40px -12px rgba(47,184,255,.6);}
.btn.btn-primary:active{transform:translateY(1px);}
.btn.btn-ghost{background:rgba(255,255,255,.06);border-color:var(--line-strong);color:var(--text);}
.btn.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:var(--primary);color:#fff;transform:translateY(-1px);}
.btn.btn-outline{background:transparent;border-color:var(--line);color:var(--text-2);}
.btn.btn-outline:hover{border-color:var(--primary);color:var(--primary);}
.btn.btn-sm{height:38px;padding:0 16px;font-size:13px;border-radius:10px;}
.btn-nav{height:44px;padding:0 20px;font-size:14px;}
.nav-cta{background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;box-shadow:var(--sh-glow);}
.nav-cta:hover{color:#fff;filter:brightness(1.06);}

/* ---------- page hero ---------- */
.page-hero{position:relative;overflow:hidden;padding:58px 0 52px;background:var(--bg-1);}
.page-hero__bg{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
  opacity:.34;
}
.page-hero__veil{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,10,24,.55),rgba(5,10,24,.94));
}
.page-hero__grid{
  position:absolute;inset:0;opacity:.35;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
}
.page-hero .container{position:relative;z-index:2;}
.crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px;}
.crumbs li{display:inline-flex;align-items:center;gap:8px;}
.crumbs li:not(:last-child)::after{content:"/";color:rgba(255,255,255,.24);}
.crumbs a:hover{color:var(--primary);}
.crumbs .current{color:var(--text-2);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;margin-bottom:18px;
  border-radius:var(--r-pill);background:rgba(47,184,255,.12);border:1px solid rgba(47,184,255,.3);
  color:var(--primary);font-size:12px;font-weight:600;letter-spacing:.04em;
}
.page-hero h1{font-size:clamp(30px,4.4vw,52px);font-weight:800;line-height:1.16;max-width:900px;}
.page-hero h1 .hl{
  background:linear-gradient(100deg,var(--primary),var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.page-hero__lead{margin-top:18px;max-width:680px;color:var(--text-2);font-size:16px;}
.hero-metrics{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;
  margin-top:36px;max-width:760px;
}
.metric{
  padding:18px 20px;border-radius:var(--r-sm);
  background:var(--surface);border:1px solid var(--line);
  backdrop-filter:blur(12px);
}
.metric b{display:block;font-size:clamp(24px,3vw,34px);font-weight:800;line-height:1.2;color:var(--accent);}
.metric span{font-size:13px;color:var(--text-3);}

/* ---------- section ---------- */
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:40px;flex-wrap:wrap;}
.section-head h2{font-size:clamp(26px,3.2vw,40px);font-weight:700;line-height:1.2;}
.section-head p{margin-top:12px;color:var(--text-2);font-size:15px;max-width:620px;}
.section-tag{
  display:inline-block;margin-bottom:14px;font-size:13px;font-weight:600;color:var(--primary);
  letter-spacing:.08em;
}

/* ---------- activity rail ---------- */
.rail{
  display:grid;grid-auto-flow:column;grid-auto-columns:minmax(276px,86%);
  gap:20px;overflow-x:auto;padding:6px 4px 20px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
  scrollbar-width:thin;scrollbar-color:rgba(47,184,255,.5) rgba(255,255,255,.06);
}
.rail::-webkit-scrollbar{height:6px;}
.rail::-webkit-scrollbar-track{background:rgba(255,255,255,.06);border-radius:999px;}
.rail::-webkit-scrollbar-thumb{background:linear-gradient(90deg,var(--primary),var(--primary-2));border-radius:999px;}
@media (min-width:992px){
  .rail{grid-template-columns:repeat(4,minmax(0,1fr));grid-auto-flow:row;grid-auto-columns:auto;overflow:visible;padding:0;}
}
.act-card{
  scroll-snap-align:start;
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  transition:transform .32s var(--ease),border-color .32s var(--ease),box-shadow .32s var(--ease);
}
.act-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 26px 54px -22px rgba(0,0,0,.85),inset 0 1px 0 rgba(255,255,255,.12);}
.act-card__media{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,var(--bg-2),#0b1730);}
.act-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.act-card:hover .act-card__media img{transform:scale(1.04);}
.act-card__body{padding:22px;display:flex;flex-direction:column;gap:14px;flex:1 1 auto;}
.act-card__title{font-size:19px;font-weight:600;line-height:1.4;}
.act-card__desc{font-size:14px;color:var(--text-2);line-height:1.75;}
.act-card__foot{margin-top:auto;display:flex;flex-direction:column;gap:14px;}

.badge-state{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--r-pill);font-size:12px;font-weight:600;
}
.badge-ok{background:rgba(46,230,168,.14);color:var(--ok);}
.badge-run{background:rgba(47,184,255,.14);color:var(--primary);}
.badge-end{background:rgba(110,126,158,.18);color:var(--text-3);}
.badge-gold{background:rgba(255,194,75,.14);color:var(--accent);}
.act-card__chip{position:absolute;top:12px;left:12px;backdrop-filter:blur(8px);}

.countdown{display:flex;gap:6px;}
.cd-cell{
  min-width:46px;padding:6px 4px;border-radius:10px;text-align:center;
  background:rgba(255,255,255,.06);border:1px solid var(--line);
}
.cd-cell b{display:block;font-size:17px;font-weight:800;color:var(--accent);line-height:1.2;font-variant-numeric:tabular-nums;}
.cd-cell i{font-style:normal;font-size:11px;color:var(--text-3);}
.bar{height:8px;border-radius:999px;background:rgba(255,255,255,.1);overflow:hidden;}
.bar__fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--primary),var(--primary-2));box-shadow:0 0 12px rgba(47,184,255,.5);}
.bar__fill--gold{background:linear-gradient(90deg,var(--accent),#ff9f43);box-shadow:0 0 12px rgba(255,194,75,.45);}
.bar__fill--muted{background:linear-gradient(90deg,var(--text-3),#4a5876);box-shadow:none;}
.bar-meta{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);margin-top:8px;}
.bar-meta b{color:var(--text-2);font-variant-numeric:tabular-nums;}

/* ---------- overview panel ---------- */
.overview{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
}
.overview__cell{padding:28px 26px;background:var(--bg-1);}
.overview__cell h3{font-size:16px;font-weight:600;}
.overview__cell b{display:block;margin:10px 0 6px;font-size:clamp(26px,3.4vw,38px);font-weight:800;color:var(--accent);line-height:1.15;}
.overview__cell p{font-size:14px;color:var(--text-2);}

/* ---------- reward list ---------- */
.reward-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.reward-item{
  display:flex;gap:16px;padding:24px;border-radius:var(--r-card);
  background:var(--surface);border:1px solid var(--line);
  transition:transform .3s var(--ease),border-color .3s var(--ease),background .3s var(--ease);
}
.reward-item:hover{transform:translateY(-3px);border-color:var(--line-strong);background:var(--surface-2);}
.icon-chip{
  flex:0 0 auto;width:46px;height:46px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(47,184,255,.25),rgba(123,92,255,.25));
  border:1px solid rgba(47,184,255,.3);color:var(--primary);font-size:17px;
}
.icon-chip--gold{background:linear-gradient(135deg,rgba(255,194,75,.24),rgba(255,159,67,.18));border-color:rgba(255,194,75,.34);color:var(--accent);}
.reward-item h3{font-size:17px;font-weight:600;display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.reward-item p{margin-top:8px;font-size:14px;color:var(--text-2);line-height:1.75;}
.reward-value{
  display:inline-block;font-size:14px;font-weight:800;color:var(--accent);
  font-variant-numeric:tabular-nums;
}

/* ---------- accordion ---------- */
.rules-wrap{max-width:940px;margin:0 auto;}
.accordion-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-sm);
  margin-bottom:14px;overflow:hidden;
}
.accordion-item:last-child{margin-bottom:0;}
.accordion-button{
  background:transparent;color:var(--text);font-size:16px;font-weight:600;padding:20px 22px;
  border:0;box-shadow:none;border-left:3px solid transparent;
}
.accordion-button:not(.collapsed){
  background:rgba(47,184,255,.08);color:var(--primary);border-left-color:var(--primary);box-shadow:none;
}
.accordion-button:focus{box-shadow:none;border-color:transparent;border-left-color:var(--primary);}
.accordion-button::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  background-image:none;width:auto;height:auto;font-size:13px;color:var(--text-3);
  transition:transform .3s var(--ease),color .3s var(--ease);
}
.accordion-button:not(.collapsed)::after{color:var(--primary);transform:rotate(180deg);}
.accordion-body{padding:0 22px 22px;color:var(--text-2);font-size:15px;}
.accordion-body ul{display:flex;flex-direction:column;gap:8px;}
.accordion-body li{position:relative;padding-left:18px;}
.accordion-body li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:2px;border-radius:2px;background:var(--primary);}

.notice{
  display:flex;gap:14px;padding:20px 22px;margin-bottom:26px;border-radius:var(--r-sm);
  background:rgba(255,176,32,.08);border:1px solid rgba(255,176,32,.35);
}
.notice i{color:var(--warn);font-size:18px;margin-top:3px;}
.notice p{font-size:14px;color:var(--text-2);}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;text-align:center;
  padding:64px 32px;border-radius:28px;
  background:var(--bg-2);
  isolation:isolate;
}
.cta-band__bg{
  position:absolute;inset:0;z-index:-2;
  background-image:url(/assets/images/backpic/back-3.png);
  background-size:cover;background-position:center;opacity:.28;
}
.cta-band__veil{position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(5,10,24,.7),rgba(5,10,24,.95));}
.cta-band::after{
  content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;pointer-events:none;
  background:linear-gradient(135deg,rgba(47,184,255,.85),rgba(123,92,255,.45),rgba(255,194,75,.6));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
}
.cta-band h2{font-size:clamp(24px,3vw,36px);font-weight:800;line-height:1.25;}
.cta-band p{margin:16px auto 0;max-width:620px;color:var(--text-2);font-size:15px;}
.cta-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;margin-top:30px;}
.cta-note{margin-top:20px;font-size:13px;color:var(--text-3);}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-0);border-top:1px solid var(--line);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px;}
.footer-brand .brand{color:var(--text);margin-bottom:16px;}
.footer-brand .brand:hover{color:var(--text);}
.footer-brand p{font-size:14px;color:var(--text-3);max-width:320px;}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--text);}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--text-3);}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--text-3);}
.footer-bottom ul{display:flex;flex-wrap:wrap;gap:20px;}
.footer-bottom a{font-size:13px;color:var(--text-3);}
.footer-bottom a:hover{color:var(--primary);}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(12px);animation:riseIn .7s var(--ease) forwards;}
.reveal.d1{animation-delay:.06s;}
.reveal.d2{animation-delay:.12s;}
.reveal.d3{animation-delay:.18s;}
@keyframes riseIn{to{opacity:1;transform:translateY(0);}}

/* ---------- responsive ---------- */
@media (max-width:991px){
  .header-inner{height:64px;gap:12px;}
  .section{padding:64px 0;}
  .section--tight{padding:52px 0;}
  .overview{grid-template-columns:1fr;}
  .reward-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
}
@media (max-width:767px){
  .hero-metrics{grid-template-columns:1fr;max-width:100%;}
  .page-hero{padding:40px 0 40px;}
  .cta-band{padding:44px 20px;border-radius:22px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .rail{grid-auto-columns:minmax(240px,88%);}
  .reward-item{padding:18px;}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category4 */
:root{
  --bg-0:#050A18;
  --bg-1:#0A1226;
  --bg-2:#101B36;
  --surface:rgba(255,255,255,.055);
  --surface-2:rgba(255,255,255,.09);
  --line:rgba(255,255,255,.12);
  --line-strong:rgba(255,255,255,.22);
  --primary:#2FB8FF;
  --primary-2:#7B5CFF;
  --accent:#FFC24B;
  --ok:#2EE6A8;
  --warn:#FFB020;
  --danger:#FF5C7A;
  --text:#E9EFFB;
  --text-2:#A7B6D4;
  --text-3:#6E7E9E;
  --nav-bg:rgba(255,255,255,.94);
  --nav-text:#16203A;
  --nav-text-2:#5A6A85;
  --nav-line:rgba(16,32,64,.08);
  --r-card:20px;
  --r-sm:12px;
  --r-btn:12px;
  --r-pill:999px;
  --r-img:16px;
  --sh-card:0 20px 44px -20px rgba(0,0,0,.7);
  --sh-nav:0 6px 22px rgba(10,20,50,.10);
  --sh-glow:0 0 0 1px rgba(47,184,255,.35),0 14px 34px -10px rgba(47,184,255,.45);
  --container:1280px;
  --ease:cubic-bezier(.22,.68,.32,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(760px 420px at 12% -6%, rgba(47,184,255,.10), transparent 62%),
    radial-gradient(680px 420px at 92% 4%, rgba(123,92,255,.10), transparent 60%);
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:.015em;}
p{margin:0;}
a{color:inherit;text-decoration:none;transition:color .25s var(--ease);}
a:hover{color:var(--primary);}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:2000;
  background:var(--primary);color:#03101f;padding:10px 18px;border-radius:0 0 12px 0;font-weight:600;
}
.skip-link:focus{left:0;color:#03101f;}
[hidden]{display:none !important;}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--nav-bg);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--nav-line);
  box-shadow:0 2px 10px rgba(10,20,50,.06);
  transition:box-shadow .3s var(--ease),height .3s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-nav);}
.header-inner{
  display:flex;align-items:center;gap:26px;
  height:72px;
  transition:height .3s var(--ease);
}
.site-header.is-scrolled .header-inner{height:66px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand__mark{
  width:34px;height:34px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  color:#fff;font-size:16px;
  box-shadow:0 8px 18px -8px rgba(47,184,255,.85);
}
.brand__text{font-weight:700;font-size:18px;color:#16203A;letter-spacing:.02em;}
.brand:hover .brand__text{color:#16203A;}
.nav-links{align-items:center;gap:6px;}
.nav-link-item{
  position:relative;
  padding:8px 14px;border-radius:10px;
  color:var(--nav-text-2);font-size:15px;font-weight:500;white-space:nowrap;
  transition:color .25s var(--ease),background .25s var(--ease);
}
.nav-link-item::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-2));
  transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease);
}
.nav-link-item:hover{color:var(--primary);background:rgba(47,184,255,.07);}
.nav-link-item:hover::after{transform:scaleX(1);}
.nav-link-item.active{color:var(--primary);font-weight:600;}
.nav-link-item.active::after{transform:scaleX(1);}
.header-actions{margin-left:auto;align-items:center;gap:14px;}
.nav-search{
  position:relative;display:flex;align-items:center;
  width:250px;height:44px;
  background:#F3F6FC;border:1px solid var(--nav-line);border-radius:var(--r-pill);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease);
}
.nav-search i{position:absolute;left:16px;color:#8A9AB5;font-size:14px;}
.nav-search input{
  width:100%;height:100%;border:0;background:transparent;
  padding:0 18px 0 40px;font-size:14px;color:#16203A;border-radius:var(--r-pill);
}
.nav-search input::placeholder{color:#93A2BC;}
.nav-search input:focus{outline:none;}
.nav-search:focus-within{
  background:#fff;border-color:rgba(47,184,255,.7);
  box-shadow:0 0 0 4px rgba(47,184,255,.16);
}
.btn-primary-cta{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border:0;border-radius:var(--r-btn);
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  color:#fff;font-size:15px;font-weight:600;letter-spacing:.02em;
  box-shadow:0 12px 26px -12px rgba(47,184,255,.9);
  transition:transform .25s var(--ease),filter .25s var(--ease),box-shadow .25s var(--ease);
}
.btn-primary-cta:hover{color:#fff;filter:brightness(1.06);transform:translateY(-1px);box-shadow:var(--sh-glow);}
.btn-primary-cta:active{transform:translateY(1px);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  border:1px solid var(--line-strong);
  background:rgba(255,255,255,.04);
  color:var(--text);font-size:15px;font-weight:600;
  transition:border-color .25s var(--ease),background .25s var(--ease),transform .25s var(--ease),color .25s var(--ease);
}
.btn-ghost:hover{color:var(--primary);border-color:rgba(47,184,255,.65);background:rgba(47,184,255,.08);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.nav-toggle{
  margin-left:auto;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--nav-line);background:#F3F6FC;color:#16203A;font-size:18px;
  display:inline-flex;align-items:center;justify-content:center;
}
.nav-toggle:hover{background:#E9EFFA;}

/* 移动端抽屉 */
.mobile-nav{
  width:min(360px,88vw) !important;
  background:rgba(5,10,24,.97);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-left:1px solid var(--line);
  color:var(--text);
}
.mobile-nav .offcanvas-header{
  border-bottom:1px solid var(--line);
  padding:16px 20px;
}
.mobile-nav .brand__text{color:var(--text);}
.btn-close-custom{
  width:40px;height:40px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.05);color:var(--text);font-size:16px;
  display:inline-flex;align-items:center;justify-content:center;
}
.btn-close-custom:hover{border-color:rgba(47,184,255,.6);color:var(--primary);}
.mobile-nav .offcanvas-body{padding:20px;display:flex;flex-direction:column;gap:18px;}
.nav-search--mobile{width:100%;background:rgba(255,255,255,.06);border-color:var(--line);}
.nav-search--mobile input{color:var(--text);}
.nav-search--mobile i{color:var(--text-3);}
.mobile-links{display:flex;flex-direction:column;gap:4px;}
.mobile-links a{
  padding:13px 14px;border-radius:12px;color:var(--text-2);font-size:15px;font-weight:500;
  border:1px solid transparent;transition:all .25s var(--ease);
}
.mobile-links a:hover,.mobile-links a.active{
  color:var(--text);background:rgba(47,184,255,.09);border-color:rgba(47,184,255,.3);
}

/* ============ 页头 ============ */
.page-hero{
  position:relative;
  padding:56px 0 60px;
  min-height:300px;
  display:flex;align-items:center;
  background:
    linear-gradient(180deg,rgba(5,10,24,.55),rgba(5,10,24,.94)),
    url("/assets/images/backpic/back-1.png") center/cover no-repeat,
    linear-gradient(135deg,var(--bg-1),var(--bg-2));
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:52px 52px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 85%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 85%);
}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px;}
.breadcrumb-list li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb-list li+li::before{content:"/";color:var(--text-3);}
.breadcrumb-list a{color:var(--text-2);}
.breadcrumb-list a:hover{color:var(--primary);}
.breadcrumb-list [aria-current]{color:var(--text-3);}
.page-hero h1{
  font-size:clamp(30px,4.4vw,52px);
  font-weight:800;line-height:1.16;
  letter-spacing:.01em;
  max-width:20em;
}
.page-hero .hero-sub{
  margin-top:18px;max-width:720px;
  color:var(--text-2);font-size:16px;line-height:1.9;
}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;
}
.hero-stat{
  min-width:158px;padding:14px 20px;border-radius:var(--r-sm);
  background:var(--surface);border:1px solid var(--line);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}
.hero-stat strong{
  display:block;font-size:24px;font-weight:800;color:var(--accent);
  font-variant-numeric:tabular-nums;letter-spacing:.01em;line-height:1.3;
}
.hero-stat span{font-size:13px;color:var(--text-3);}

/* ============ 通用板块 ============ */
.section{padding:96px 0;position:relative;z-index:1;}
.section--tight{padding:72px 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{font-size:clamp(24px,3vw,38px);font-weight:700;}
.section-head p{margin-top:14px;color:var(--text-2);font-size:15.5px;line-height:1.9;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--primary);
  padding:5px 12px;border-radius:var(--r-pill);
  background:rgba(47,184,255,.12);border:1px solid rgba(47,184,255,.28);
  margin-bottom:16px;
}
.divider{height:1px;background:linear-gradient(90deg,var(--line),transparent);border:0;margin:0;}

/* ============ FAQ 搜索 ============ */
.faq-search-wrap{
  background:linear-gradient(180deg,rgba(16,27,54,.72),rgba(10,18,38,.55));
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 26px 22px;
  box-shadow:var(--sh-card);
  margin-bottom:38px;
}
.faq-search{
  position:relative;display:flex;align-items:center;gap:12px;
}
.faq-search i{
  position:absolute;left:22px;color:var(--text-3);font-size:16px;pointer-events:none;
}
.faq-search input{
  flex:1;height:52px;border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:rgba(255,255,255,.06);
  color:var(--text);font-size:15px;
  padding:0 22px 0 52px;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease);
}
.faq-search input::placeholder{color:var(--text-3);}
.faq-search input:focus{
  outline:none;background:rgba(255,255,255,.09);
  border-color:rgba(47,184,255,.7);
  box-shadow:0 0 0 4px rgba(47,184,255,.16);
}
.faq-search__btn{
  height:52px;padding:0 24px;border-radius:var(--r-pill);border:0;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  color:#fff;font-size:15px;font-weight:600;white-space:nowrap;
  box-shadow:0 12px 26px -14px rgba(47,184,255,.9);
  transition:filter .25s var(--ease),transform .25s var(--ease);
}
.faq-search__btn:hover{filter:brightness(1.06);transform:translateY(-1px);}
.faq-search__btn:active{transform:translateY(1px);}
.faq-hint{
  margin-top:14px;font-size:13.5px;color:var(--text-3);
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
}
.faq-hint strong{color:var(--accent);font-weight:700;font-variant-numeric:tabular-nums;}
.faq-quick-tags{display:flex;flex-wrap:wrap;gap:8px;}
.tag-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;
  background:rgba(47,184,255,.12);color:var(--primary);
  border:1px solid rgba(47,184,255,.24);
  cursor:pointer;transition:all .25s var(--ease);
}
.tag-pill:hover{background:rgba(47,184,255,.2);border-color:rgba(47,184,255,.5);}
.tag-pill--gold{background:rgba(255,194,75,.12);color:var(--accent);border-color:rgba(255,194,75,.28);}
.tag-pill--gold:hover{background:rgba(255,194,75,.2);border-color:rgba(255,194,75,.5);}

/* ============ FAQ 双列 ============ */
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 26px;align-items:start;}
.faq-accordion{
  --bs-accordion-bg:transparent;
  --bs-accordion-border-width:0;
  --bs-accordion-border-color:transparent;
  --bs-accordion-btn-color:var(--text);
  --bs-accordion-btn-bg:transparent;
  --bs-accordion-active-color:var(--primary);
  --bs-accordion-active-bg:transparent;
  --bs-accordion-body-color:var(--text-2);
  --bs-accordion-btn-focus-box-shadow:none;
  --bs-accordion-btn-icon:none;
  --bs-accordion-btn-active-icon:none;
  --bs-accordion-border-radius:var(--r-sm);
  --bs-accordion-inner-border-radius:var(--r-sm);
  --bs-accordion-btn-padding-y:18px;
  --bs-accordion-btn-padding-x:20px;
  --bs-accordion-body-padding-y:0;
  --bs-accordion-body-padding-x:20px;
}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  margin-bottom:16px;
  overflow:hidden;
  transition:border-color .3s var(--ease),transform .3s var(--ease),box-shadow .3s var(--ease),background .3s var(--ease);
}
.faq-item:hover{
  transform:translateY(-2px);
  border-color:var(--line-strong);
  background:var(--surface-2);
  box-shadow:var(--sh-card);
}
.faq-accordion .accordion-button{
  display:flex;align-items:center;gap:14px;
  width:100%;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);
  padding:18px 52px 18px 20px;
  background:transparent;box-shadow:none;border:0;
  position:relative;
  transition:color .25s var(--ease),background .25s var(--ease);
}
.faq-accordion .accordion-button::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;
  background:linear-gradient(180deg,var(--primary),var(--primary-2));
  opacity:0;transition:opacity .3s var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--primary);background:rgba(47,184,255,.05);}
.faq-accordion .accordion-button:not(.collapsed)::before{opacity:1;}
.faq-accordion .accordion-button::after{display:none;}
.faq-mark{
  position:absolute;right:18px;top:50%;transform:translateY(-50%);
  width:28px;height:28px;border-radius:9px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;color:var(--text-2);
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  transition:all .3s var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed) .faq-mark{
  color:#fff;border-color:transparent;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  transform:translateY(-50%) rotate(45deg);
}
.faq-accordion .accordion-body{
  color:var(--text-2);font-size:15px;line-height:1.9;
  padding:0 20px 20px;
}
.faq-accordion .accordion-body p+p{margin-top:10px;}
.faq-accordion .accordion-body strong{color:var(--text);font-weight:600;}
.faq-accordion .accordion-body .mini-list{margin-top:12px;display:flex;flex-direction:column;gap:8px;}
.faq-accordion .accordion-body .mini-list li{
  position:relative;padding-left:18px;font-size:14.5px;color:var(--text-2);
}
.faq-accordion .accordion-body .mini-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-2));
}
.faq-empty{
  grid-column:1 / -1;
  text-align:center;padding:56px 24px;
  border:1px dashed var(--line-strong);border-radius:var(--r-card);
  background:rgba(255,255,255,.03);
}
.faq-empty i{
  font-size:30px;color:rgba(47,184,255,.45);margin-bottom:14px;display:block;
}
.faq-empty p{color:var(--text-2);font-size:15px;}
.faq-empty .btn-ghost{margin-top:18px;}

/* ============ 提示块 ============ */
.tips-panel{
  border-radius:var(--r-card);
  border:1px solid rgba(255,176,32,.42);
  background:linear-gradient(180deg,rgba(255,176,32,.09),rgba(255,176,32,.02));
  padding:30px;
  box-shadow:var(--sh-card);
}
.tips-panel h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:12px;}
.tips-panel > p{color:var(--text-2);font-size:15px;max-width:820px;}
.tips-list{
  margin-top:26px;
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;
}
.tip-item{
  background:rgba(5,10,24,.45);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  padding:20px;
  transition:border-color .3s var(--ease),transform .3s var(--ease);
}
.tip-item:hover{border-color:rgba(255,176,32,.55);transform:translateY(-3px);}
.tip-item span{
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:9px;margin-bottom:12px;
  background:rgba(255,176,32,.16);color:var(--warn);font-size:13px;font-weight:700;
  font-variant-numeric:tabular-nums;
}
.tip-item h3{font-size:16px;margin-bottom:8px;font-weight:600;}
.tip-item p{font-size:14px;color:var(--text-2);line-height:1.8;}

/* ============ 快速通道卡片 ============ */
.channel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.channel-card{
  display:flex;flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-card);
  transition:transform .32s var(--ease),border-color .32s var(--ease),box-shadow .32s var(--ease);
}
.channel-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 28px 54px -24px rgba(0,0,0,.85);}
.channel-card__media{
  position:relative;aspect-ratio:16/9;overflow:hidden;
  background:linear-gradient(135deg,var(--bg-2),var(--bg-1));
}
.channel-card__media img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .5s var(--ease);
}
.channel-card:hover .channel-card__media img{transform:scale(1.04);}
.channel-card__badge{
  position:absolute;left:14px;top:14px;
  padding:4px 11px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;
  background:rgba(47,184,255,.16);color:#9BDCFF;
  border:1px solid rgba(47,184,255,.35);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
.channel-card__body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;gap:10px;}
.channel-card__body h3{font-size:19px;font-weight:600;}
.channel-card__body p{color:var(--text-2);font-size:14.5px;line-height:1.85;}
.channel-card__link{
  margin-top:auto;padding-top:8px;
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--primary);
}
.channel-card__link i{font-size:12px;transition:transform .3s var(--ease);}
.channel-card:hover .channel-card__link i{transform:translateX(4px);}

/* ============ 未解决 CTA 卡 ============ */
.unsolved-card{
  display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:center;
  border-radius:var(--r-card);
  padding:38px;
  border:1px solid transparent;
  background:
    linear-gradient(180deg,rgba(16,27,54,.9),rgba(10,18,38,.94)) padding-box,
    linear-gradient(120deg,rgba(47,184,255,.65),rgba(123,92,255,.55)) border-box;
  box-shadow:0 26px 60px -30px rgba(47,184,255,.6);
}
.unsolved-card h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:12px;}
.unsolved-card p{color:var(--text-2);font-size:15px;line-height:1.9;}
.unsolved-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:24px;}
.unsolved-list{
  display:flex;flex-direction:column;gap:12px;
  padding:22px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.045);border:1px solid var(--line);
}
.unsolved-list li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:14px;color:var(--text-2);line-height:1.8;
}
.unsolved-list i{color:var(--ok);font-size:13px;margin-top:6px;}

/* ============ 统一 CTA ============ */
.cta-panel{
  position:relative;text-align:center;
  padding:62px 32px;
  border-radius:32px;
  border:1px solid transparent;
  background:
    linear-gradient(180deg,rgba(16,27,54,.88),rgba(10,18,38,.94)) padding-box,
    linear-gradient(120deg,rgba(47,184,255,.6),rgba(123,92,255,.5)) border-box;
  box-shadow:0 30px 70px -34px rgba(47,184,255,.65);
  overflow:hidden;
}
.cta-panel::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(420px 200px at 20% 0%, rgba(47,184,255,.16), transparent 70%),
    radial-gradient(420px 220px at 84% 100%, rgba(123,92,255,.16), transparent 70%);
}
.cta-panel > *{position:relative;z-index:1;}
.cta-panel h2{font-size:clamp(24px,3vw,36px);}
.cta-panel p{margin:16px auto 0;max-width:640px;color:var(--text-2);font-size:15.5px;line-height:1.9;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:30px;}
.cta-note{margin-top:20px;font-size:13px;color:var(--text-3);}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-0);
  border-top:1px solid var(--line);
  padding-top:64px;
  position:relative;z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:36px;
  padding-bottom:48px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand .brand__text{color:var(--text);}
.footer-brand p{color:var(--text-3);font-size:14px;line-height:1.9;max-width:320px;}
.footer-col h4{
  font-size:15px;font-weight:600;color:var(--text);
  margin-bottom:18px;letter-spacing:.02em;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{color:var(--text-3);font-size:14px;}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0 28px;
  display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
}
.footer-bottom p{color:var(--text-3);font-size:13px;}
.footer-bottom ul{display:flex;flex-wrap:wrap;gap:20px;}
.footer-bottom a{color:var(--text-3);font-size:13px;}
.footer-bottom a:hover{color:var(--primary);}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .nav-search{width:210px;}
}
@media (max-width:991.98px){
  .header-inner{height:66px;}
  .section{padding:68px 0;}
  .section--tight{padding:56px 0;}
  .faq-grid{grid-template-columns:1fr;}
  .tips-list{grid-template-columns:1fr;}
  .channel-grid{grid-template-columns:1fr;gap:18px;}
  .unsolved-card{grid-template-columns:1fr;padding:30px;gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .page-hero{padding:44px 0 48px;min-height:260px;}
}
@media (max-width:767.98px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .section--tight{padding:48px 0;}
  .faq-search{flex-wrap:wrap;}
  .faq-search input{height:48px;flex:1 1 100%;}
  .faq-search__btn{width:100%;height:48px;}
  .faq-search-wrap{padding:20px 18px 18px;}
  .hero-stats{gap:10px;}
  .hero-stat{min-width:0;flex:1 1 calc(50% - 10px);}
  .cta-panel{padding:44px 20px;border-radius:24px;}
  .tips-panel{padding:22px 18px;}
  .unsolved-card{padding:24px 18px;}
  .channel-card__body{padding:20px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:519.98px){
  .page-hero h1{font-size:26px;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn-primary-cta,.cta-actions .btn-ghost{width:100%;}
  .unsolved-actions .btn-primary-cta,.unsolved-actions .btn-ghost{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}