/* roulang page: index */
:root{
  --orange:#FF4D1C;
  --orange-soft:rgba(255,77,28,.18);
  --cyan:#14E0C8;
  --yellow:#FFD84D;
  --bg:#0B0D10;
  --panel:#14181D;
  --panel-2:#191E24;
  --line:#262C33;
  --cream:#F6F4EF;
  --text:#F2F4F6;
  --text-2:#9AA4AE;
  --ink:#14181D;
  --ink-2:#5C6670;
  --r-xl:24px;
  --r-lg:16px;
  --r-sm:12px;
  --r-pill:999px;
  --shadow-dark:0 0 0 1px rgba(255,77,28,.35),0 8px 24px rgba(255,77,28,.18);
  --shadow-light:0 6px 20px rgba(20,24,29,.08);
  --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:.02em;
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
body.has-sticky-cta{padding-bottom:72px;}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
a:hover{color:var(--orange);}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:.01em;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
.num{font-family:Inter,"DIN Alternate","SF Mono",ui-monospace,monospace;font-variant-numeric:tabular-nums;}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px;}
@media(min-width:1440px){.container{max-width:1320px;}}
@media(min-width:1024px){.container{padding:0 32px;}}
.section{padding:56px 0;position:relative;}
@media(min-width:1024px){.section{padding:88px 0;}}
.section--cream{background:var(--cream);color:var(--ink);}
.section--cream .section-sub{color:var(--ink-2);}
.section-head{margin-bottom:32px;}
.section-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--cyan);margin-bottom:14px;font-weight:600;
}
.section-eyebrow::before{content:"";width:22px;height:2px;background:var(--orange);display:block;}
.section--cream .section-eyebrow{color:#0F9E8C;}
.section-title{font-size:24px;}
@media(min-width:640px){.section-title{font-size:26px;}}
@media(min-width:1024px){.section-title{font-size:28px;}}
.section-sub{margin-top:10px;color:var(--text-2);font-size:15px;max-width:720px;}
.section-head--split{display:flex;flex-wrap:wrap;gap:20px;align-items:flex-end;justify-content:space-between;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border:1px solid transparent;border-radius:var(--r-pill);
  font-size:16px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform .2s ease,background-color .2s ease,border-color .2s ease,box-shadow .2s ease,color .2s ease;
}
.btn--primary{background:var(--orange);color:#0B0D10;}
.btn--primary:hover{background:#FF6636;color:#0B0D10;transform:translateY(-2px);box-shadow:0 10px 24px rgba(255,77,28,.28);}
.btn--primary:active{transform:translateY(0);}
.btn--ghost{background:transparent;border-color:var(--orange);color:var(--text);}
.btn--ghost:hover{background:rgba(255,77,28,.12);color:var(--text);transform:translateY(-2px);}
.btn--ghost-ink{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn--ghost-ink:hover{background:rgba(20,24,29,.06);color:var(--ink);transform:translateY(-2px);}
.btn--text{height:auto;padding:0;color:var(--orange);font-weight:600;}
.btn--text:hover{color:#FF6636;gap:12px;}
.btn--sm{height:40px;padding:0 20px;font-size:15px;}
.btn--xs{height:32px;padding:0 16px;font-size:14px;}

/* 徽章 / 标签 */
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border:1px solid var(--line);border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.04em;color:var(--text-2);background:rgba(20,24,29,.6);
}
.badge--orange{border-color:rgba(255,77,28,.6);color:#FF8A63;}
.badge--cyan{border-color:rgba(20,224,200,.5);color:#6DEFDF;}
.badge--ink{border-color:rgba(20,24,29,.18);color:var(--ink-2);background:transparent;}
.tag-strip{display:flex;flex-wrap:wrap;gap:10px;}

/* 头部导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:transparent;border-bottom:1px solid transparent;
  transition:background-color .2s ease,border-color .2s ease,backdrop-filter .2s ease;
}
.site-header.is-solid{background:rgba(11,13,16,.94);border-bottom-color:var(--line);backdrop-filter:blur(10px);}
.nav-bar{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  height:64px;
}
@media(min-width:1024px){.nav-bar{height:76px;}}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand__mark{
  width:30px;height:30px;border-radius:9px;position:relative;flex:0 0 auto;
  background:linear-gradient(135deg,var(--orange) 0%,#FF7B4A 60%,var(--yellow) 100%);
  box-shadow:0 0 0 1px rgba(255,77,28,.4);
}
.brand__mark::after{
  content:"";position:absolute;inset:7px 6px;
  border-radius:3px;border:1.5px solid rgba(11,13,16,.72);
  border-left-width:4px;
}
.brand__text{font-size:18px;font-weight:700;letter-spacing:.04em;color:var(--text);}
@media(min-width:1024px){.brand__text{font-size:19px;}}
.nav-capsule{display:none;}
@media(min-width:1024px){
  .nav-capsule{
    display:flex;align-items:center;gap:4px;
    padding:5px;border-radius:var(--r-pill);
    border:1px solid var(--line);background:rgba(20,24,29,.7);
  }
  .nav-link{
    display:inline-flex;align-items:center;height:38px;padding:0 16px;
    border-radius:var(--r-pill);font-size:15px;color:var(--text-2);
    transition:background-color .2s ease,color .2s ease;
  }
  .nav-link:hover{color:var(--text);background:rgba(255,255,255,.05);}
  .nav-link.is-active{background:var(--orange);color:#0B0D10;font-weight:600;}
}
.nav-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(20,24,29,.7);color:var(--text-2);
  display:none;align-items:center;justify-content:center;font-size:15px;
  transition:border-color .2s ease,color .2s ease;
}
.icon-btn:hover{border-color:var(--orange);color:var(--orange);}
@media(min-width:1024px){.icon-btn{display:inline-flex;}}
.nav-cta{display:none;}
@media(min-width:1024px){.nav-cta{display:inline-flex;}}
.burger{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(20,24,29,.7);color:var(--text);
}
.burger span{display:block;width:18px;height:2px;background:currentColor;position:relative;}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;}
.burger span::before{top:-6px;}
.burger span::after{top:6px;}
@media(min-width:1024px){.burger{display:none;}}
.nav-mini-cta{display:inline-flex;}
@media(min-width:1024px){.nav-mini-cta{display:none;}}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(6,8,10,.68);z-index:80;
  opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:88%;max-width:400px;z-index:90;
  background:var(--panel);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .25s ease;
  display:flex;flex-direction:column;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer__head{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 20px;border-bottom:1px solid var(--line);
}
.drawer__close{
  width:40px;height:40px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:transparent;color:var(--text-2);font-size:16px;
}
.drawer__close:hover{border-color:var(--orange);color:var(--orange);}
.drawer__nav{padding:8px 0;flex:1 1 auto;}
.drawer__link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:56px;padding:0 20px;font-size:16px;color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.drawer__link:hover{color:var(--orange);}
.drawer__link.is-active{color:var(--text);font-weight:600;}
.drawer__link.is-active::before{content:"";width:4px;height:18px;background:var(--orange);border-radius:2px;margin-right:12px;}
.drawer__foot{padding:20px;border-top:1px solid var(--line);font-size:14px;color:var(--text-2);line-height:1.8;}

/* Hero */
.hero{
  position:relative;overflow:hidden;padding:104px 0 56px;
  background-color:#0B0D10;
}
@media(min-width:1024px){.hero{padding:148px 0 88px;}}
.hero__bg{
  position:absolute;inset:0;
  background-image:linear-gradient(100deg,rgba(11,13,16,.96) 0%,rgba(11,13,16,.82) 46%,rgba(11,13,16,.6) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.hero__bg::after{
  content:"";position:absolute;left:0;bottom:0;right:0;height:140px;
  background:linear-gradient(180deg,rgba(11,13,16,0) 0%,var(--bg) 100%);
}
.hero__lane{
  position:absolute;top:22%;right:-6%;width:52%;height:120px;
  background:repeating-linear-gradient(90deg,rgba(255,77,28,.28) 0 2px,transparent 2px 26px);
  transform:skewX(-18deg);opacity:.5;pointer-events:none;
}
@media(max-width:639px){.hero__lane{display:none;}}
.hero__inner{position:relative;display:grid;gap:48px;align-items:center;}
@media(min-width:1024px){.hero__inner{grid-template-columns:1.15fr .85fr;gap:64px;}}
.hero__eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  height:30px;padding:0 14px;border-radius:var(--r-pill);
  border:1px solid rgba(20,224,200,.45);color:var(--cyan);
  font-size:13px;letter-spacing:.08em;margin-bottom:22px;
}
.hero h1{font-size:32px;line-height:1.28;letter-spacing:.01em;}
@media(min-width:640px){.hero h1{font-size:38px;}}
@media(min-width:1024px){.hero h1{font-size:44px;}}
.hero h1 em{font-style:normal;color:var(--orange);}
.hero__sub{margin-top:18px;font-size:17px;color:#C6CDD4;max-width:560px;}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero__stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;
  margin-top:40px;padding-top:28px;border-top:1px solid var(--line);
  max-width:560px;
}
.stat__value{font-size:24px;font-weight:700;color:var(--orange);line-height:1.2;}
@media(min-width:1024px){.stat__value{font-size:28px;}}
.stat__label{margin-top:6px;font-size:13px;color:var(--text-2);line-height:1.6;}

/* 竖屏播放框 */
.vframe{
  position:relative;width:100%;max-width:340px;margin:0 auto;
  aspect-ratio:9/16;border-radius:var(--r-xl);overflow:hidden;
  border:1px solid var(--line);
  box-shadow:0 0 0 1px rgba(255,77,28,.28),0 18px 44px rgba(0,0,0,.5);
  background:#0F1216;
}
@media(min-width:1024px){.vframe{max-width:400px;}}
.vframe img{width:100%;height:100%;object-fit:cover;}
.vframe__shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,13,16,.34) 0%,rgba(11,13,16,0) 34%,rgba(11,13,16,.86) 100%);}
.vframe__time{
  position:absolute;top:14px;right:14px;
  display:inline-flex;align-items:center;height:26px;padding:0 10px;
  border-radius:var(--r-pill);background:var(--yellow);color:#1A1400;
  font-size:12px;font-weight:700;
}
.vframe__play{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:64px;height:64px;border-radius:50%;background:var(--orange);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 0 10px rgba(255,77,28,.18);
  transition:transform .2s ease,box-shadow .2s ease;
}
.vframe__play::after{
  content:"";width:0;height:0;margin-left:5px;
  border-left:18px solid #0B0D10;border-top:11px solid transparent;border-bottom:11px solid transparent;
}
.vframe:hover .vframe__play{transform:translate(-50%,-50%) scale(1.06);box-shadow:0 0 0 14px rgba(255,77,28,.22);}
.vframe__foot{
  position:absolute;left:0;right:0;bottom:0;padding:18px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.vframe__name{font-size:15px;font-weight:600;color:#fff;}
.vframe__note{font-size:12px;color:#CBD2D8;}

/* 竖屏卡片 */
.vgrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
@media(min-width:640px){.vgrid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.vgrid{grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}}
@media(max-width:519px){.vgrid{grid-template-columns:1fr;}}
.vcard{
  position:relative;display:block;border-radius:var(--r-lg);overflow:hidden;
  background:var(--panel);border:1px solid var(--line);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.vcard:hover{transform:translateY(-4px);border-color:var(--orange);box-shadow:var(--shadow-dark);}
.vcard__media{position:relative;aspect-ratio:9/16;overflow:hidden;background:#101317;}
.vcard__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.vcard:hover .vcard__media img{transform:scale(1.04);}
.vcard__cat{
  position:absolute;top:12px;left:12px;
  display:inline-flex;align-items:center;height:26px;padding:0 10px;
  border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.5);
  background:rgba(11,13,16,.55);color:#fff;font-size:12px;backdrop-filter:blur(4px);
}
.vcard__time{
  position:absolute;top:12px;right:12px;
  display:inline-flex;align-items:center;height:26px;padding:0 10px;
  border-radius:var(--r-pill);background:var(--yellow);color:#1A1400;font-size:12px;font-weight:700;
}
.vcard__overlay{
  position:absolute;left:0;right:0;bottom:0;padding:16px;
  background:linear-gradient(180deg,rgba(11,13,16,0) 0%,rgba(11,13,16,.88) 62%,rgba(11,13,16,.96) 100%);
}
.vcard__title{
  font-size:16px;font-weight:600;color:#fff;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.vcard__meta{margin-top:8px;font-size:12px;color:#A9B2BA;display:flex;gap:14px;}

/* 编号清单 */
.step-list{border-top:1px solid rgba(20,24,29,.12);margin-top:8px;}
.step-item{
  display:flex;align-items:center;gap:20px;padding:20px 4px;
  border-bottom:1px solid rgba(20,24,29,.12);
  transition:background-color .2s ease;
}
.step-item:hover{background:rgba(255,77,28,.05);}
.step-item:hover .step-item__arrow{transform:translateX(4px);color:var(--orange);}
.step-item__no{
  flex:0 0 auto;width:44px;font-size:34px;font-weight:700;line-height:1;
  color:var(--orange);font-family:Inter,"DIN Alternate",ui-monospace,monospace;
}
@media(max-width:519px){.step-item__no{width:32px;font-size:24px;}}
.step-item__body{flex:1 1 auto;min-width:0;}
.step-item__title{font-size:17px;font-weight:600;color:var(--ink);}
.step-item__desc{margin-top:4px;font-size:14px;color:var(--ink-2);line-height:1.7;}
.step-item__arrow{flex:0 0 auto;color:rgba(20,24,29,.35);font-size:16px;transition:transform .2s ease,color .2s ease;}

/* 口碑条 */
.reviews{position:relative;}
.reviews__track{
  display:flex;gap:20px;overflow-x:auto;padding:4px 4px 20px;
  scroll-snap-type:x mandatory;scrollbar-width:none;
}
.reviews__track::-webkit-scrollbar{display:none;}
.review-card{
  flex:0 0 280px;scroll-snap-align:start;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px;transition:border-color .2s ease,transform .2s ease;
}
@media(min-width:1024px){.review-card{flex:0 0 320px;}}
.review-card:hover{border-color:var(--orange);transform:translateY(-4px);}
.review-card__top{display:flex;align-items:center;gap:12px;}
.avatar{
  width:42px;height:42px;border-radius:50%;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(255,77,28,.85),rgba(20,224,200,.7));
  color:#0B0D10;font-weight:700;font-size:15px;
}
.review-card__name{font-size:15px;font-weight:600;color:var(--text);}
.review-card__role{font-size:12px;color:var(--text-2);}
.review-card__text{margin-top:16px;font-size:15px;color:#C6CDD4;line-height:1.8;}
.review-card__stars{margin-top:14px;display:flex;gap:4px;color:var(--yellow);font-size:13px;}
.reviews__nav{display:none;gap:10px;}
@media(min-width:1024px){.reviews__nav{display:flex;}}
.reviews__nav button{
  width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);background:transparent;color:var(--text-2);
  transition:border-color .2s ease,color .2s ease;
}
.reviews__nav button:hover{border-color:var(--orange);color:var(--orange);}

/* 资讯列表（CMS） */
.news-grid{display:grid;gap:24px;grid-template-columns:1fr;}
@media(min-width:640px){.news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.news-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
.news-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:20px;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.news-card:hover{transform:translateY(-4px);border-color:var(--orange);box-shadow:var(--shadow-dark);}
.news-card__thumb{
  position:relative;aspect-ratio:4/3;border-radius:var(--r-sm);overflow:hidden;margin-bottom:16px;background:#101317;
}
.news-card__thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.news-card:hover .news-card__thumb img{transform:scale(1.04);}
.news-card__title{
  font-size:17px;font-weight:600;color:var(--text);line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__desc{
  margin-top:10px;font-size:14px;color:var(--text-2);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__meta{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid var(--line);
}
.news-card__date{font-size:13px;color:var(--text-2);}
.news-card__more{font-size:13px;color:var(--orange);font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.news-empty{
  border:1px dashed var(--line);border-radius:var(--r-lg);background:rgba(20,24,29,.5);
  padding:48px 24px;text-align:center;
}
.news-empty__icon{
  width:56px;height:56px;margin:0 auto 16px;border-radius:50%;
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  color:var(--text-2);font-size:20px;
}
.news-empty__text{color:var(--text-2);font-size:15px;margin-bottom:20px;}

/* FAQ */
.faq-list{max-width:920px;}
.faq-item{border:1px solid var(--line);border-radius:var(--r-sm);margin-bottom:12px;overflow:hidden;}
.section--cream .faq-item{border-color:rgba(20,24,29,.14);background:#fff;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:transparent;border:0;text-align:left;
  padding:18px 20px;font-size:17px;font-weight:600;color:var(--text);line-height:1.6;
  transition:color .2s ease;
}
.section--cream .faq-q{color:var(--ink);}
.faq-q:hover{color:var(--orange);}
.section--cream .faq-q:hover{color:var(--orange);}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  font-size:15px;color:var(--text-2);transition:transform .2s ease,color .2s ease,border-color .2s ease;
}
.section--cream .faq-icon{border-color:rgba(20,24,29,.18);color:var(--ink-2);}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--orange);border-color:var(--orange);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease;}
.faq-a__inner{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--text-2);}
.section--cream .faq-a__inner{color:var(--ink-2);}

/* 转化条 */
.cta-band{
  background:linear-gradient(96deg,rgba(255,77,28,.16) 0%,rgba(20,224,200,.1) 100%),var(--panel);
  border:1px solid var(--line);border-radius:var(--r-xl);
  padding:32px;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
}
.cta-band h2{font-size:22px;}
@media(min-width:1024px){.cta-band h2{font-size:26px;}}
.cta-band p{margin-top:8px;font-size:15px;color:var(--text-2);max-width:640px;}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:14px;}

/* 页脚 */
.site-footer{background:#080A0C;border-top:1px solid var(--line);padding:56px 0 0;margin-top:0;}
@media(min-width:1024px){.site-footer{padding-top:72px;}}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr;}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}}
.footer-brand .brand__text{font-size:18px;}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-2);max-width:280px;}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text);margin-bottom:16px;}
.footer-col ul li{margin-bottom:12px;}
.footer-col a{font-size:14px;color:var(--text-2);transition:color .2s ease;}
.footer-col a:hover{color:var(--orange);}
.footer-col p{font-size:14px;color:var(--text-2);}
.footer-bottom{
  margin-top:48px;border-top:1px solid var(--line);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-2);
}
.footer-bottom a{color:var(--text-2);}
.footer-bottom a:hover{color:var(--orange);}

/* 移动端吸底条 */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  height:64px;padding:0 16px calc(0px + env(safe-area-inset-bottom));
  background:rgba(11,13,16,.96);border-top:1px solid var(--line);backdrop-filter:blur(10px);
}
.sticky-cta__text{font-size:14px;color:var(--text-2);}
@media(min-width:1024px){.sticky-cta{display:none;}}
@media(min-width:1024px){body.has-sticky-cta{padding-bottom:0;}}

/* roulang page: article */
:root{
  --c-main:#FF4D1C;
  --c-main-soft:rgba(255,77,28,.14);
  --c-cyan:#14E0C8;
  --c-yellow:#FFD84D;
  --c-bg:#0B0D10;
  --c-panel:#14181D;
  --c-panel-2:#191E24;
  --c-line:#262C33;
  --c-text:#F2F4F6;
  --c-sub:#9AA4AE;
  --c-light:#F6F4EF;
  --c-light-line:#E2DED4;
  --c-light-text:#14181D;
  --c-light-sub:#5C6670;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --shadow-dark:0 0 0 1px var(--c-line), 0 8px 24px rgba(255,77,28,.18);
  --shadow-light:0 6px 20px rgba(20,24,29,.08);
  --font-sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-mono:"Inter","DIN Alternate","SFMono-Regular",ui-monospace,monospace;
  --pad-section:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.9;
  letter-spacing:.02em;
  text-align:left;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover;}
a{color:inherit;text-decoration:none;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--c-main);
  outline-offset:2px;
  border-radius:6px;
}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:.01em;}
p{margin:0 0 1.2em;}
ul{margin:0;padding:0;list-style:none;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1024px){
  .container{padding:0 32px;}
}
@media (min-width:1440px){
  .container{max-width:1320px;}
}
.section{padding:var(--pad-section) 0;}
.section--light{
  background:var(--c-light);
  color:var(--c-light-text);
}
.section--light .section-sub{color:var(--c-light-sub);}
.section-head{margin-bottom:32px;}
.section-title{
  font-size:28px;
  display:flex;
  align-items:center;
  gap:14px;
}
.section-title::before{
  content:"";
  width:4px;height:26px;
  border-radius:2px;
  background:var(--c-main);
  flex:none;
}
.section-sub{
  margin:12px 0 0;
  color:var(--c-sub);
  font-size:15px;
}
/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(11,13,16,.92);
  border-bottom:1px solid var(--c-line);
  backdrop-filter:blur(10px);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:68px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:none;
}
.brand__mark{
  width:30px;height:30px;
  border-radius:9px;
  background:
    linear-gradient(135deg,var(--c-main) 0%,var(--c-main) 48%,var(--c-cyan) 48%,var(--c-cyan) 100%);
  box-shadow:0 0 0 1px rgba(255,255,255,.08) inset;
  position:relative;
}
.brand__mark::after{
  content:"";
  position:absolute;
  left:6px;right:6px;top:13px;
  height:2px;
  border-radius:2px;
  background:rgba(11,13,16,.75);
}
.brand__text{
  font-size:18px;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--c-text);
  white-space:nowrap;
}
.nav-capsule{
  display:none;
  align-items:center;
  gap:4px;
  padding:5px;
  border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  background:rgba(20,24,29,.85);
}
.nav-link{
  display:inline-block;
  padding:9px 16px;
  border-radius:var(--r-pill);
  font-size:15px;
  color:var(--c-sub);
  transition:color .2s ease, background .2s ease, transform .2s ease;
  white-space:nowrap;
}
.nav-link:hover{color:var(--c-text);background:rgba(255,77,28,.10);}
.nav-link.is-active{
  background:var(--c-main);
  color:#14181D;
  font-weight:700;
}
.header-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:44px;height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid var(--c-line);
  border-radius:var(--r-sm);
  background:transparent;
  color:var(--c-text);
  cursor:pointer;
  transition:border-color .2s ease, color .2s ease;
}
.icon-btn:hover{border-color:var(--c-main);color:var(--c-main);}
@media (min-width:1024px){
  .nav-capsule{display:flex;}
  .icon-btn{display:none;}
}
/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:var(--r-pill);
  font-size:16px;
  font-weight:700;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease, filter .2s ease, border-color .2s ease, color .2s ease, background .2s ease;
}
.btn--sm{height:40px;padding:0 18px;font-size:15px;}
.btn--xs{height:32px;padding:0 14px;font-size:14px;}
.btn--primary{background:var(--c-main);color:#14181D;}
.btn--primary:hover{filter:brightness(1.08);transform:translateY(-2px);}
.btn--primary:active{transform:translateY(0);}
.btn--ghost{border-color:var(--c-main);color:var(--c-text);background:transparent;}
.btn--ghost:hover{background:var(--c-main-soft);transform:translateY(-2px);}
.btn--ghost:active{transform:translateY(0);}
.btn--text{padding:0;height:auto;color:var(--c-cyan);font-weight:700;}
.btn--text i{transition:transform .2s ease;}
.btn--text:hover i{transform:translateX(4px);}
.btn--block{width:100%;}
/* ============ 徽章/标签 ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 12px;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--c-sub);
  background:rgba(20,24,29,.6);
  white-space:nowrap;
}
.badge--main{border-color:rgba(255,77,28,.55);color:var(--c-main);}
.badge--cyan{border-color:rgba(20,224,200,.45);color:var(--c-cyan);}
.badge--yellow{background:var(--c-yellow);border-color:var(--c-yellow);color:#14181D;font-weight:700;}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;}
/* ============ 面包屑 ============ */
.crumbs-wrap{
  border-bottom:1px solid var(--c-line);
  background:linear-gradient(180deg,rgba(255,77,28,.06),transparent 70%);
}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:20px 0;
  font-size:14px;
  color:var(--c-sub);
}
.crumbs a{color:var(--c-sub);transition:color .2s ease;}
.crumbs a:hover{color:var(--c-main);}
.crumbs .sep{color:#3C444D;}
.crumbs .current{
  color:var(--c-text);
  max-width:52ch;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
/* ============ 文章布局 ============ */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:48px;
  padding:56px 0 72px;
}
@media (min-width:1024px){
  .article-layout{
    grid-template-columns:minmax(0,1fr) 320px;
    gap:56px;
    padding:72px 0 88px;
  }
}
.article-main{min-width:0;}
.article-head{padding-bottom:24px;border-bottom:1px solid var(--c-line);}
.article-head h1{
  font-size:32px;
  margin:16px 0 18px;
  max-width:22ch;
}
@media (min-width:1024px){
  .article-head h1{font-size:40px;}
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 22px;
  font-size:14px;
  color:var(--c-sub);
}
.article-meta .num{font-family:var(--font-mono);letter-spacing:.04em;color:#CBD3DA;}
.article-source{
  margin-top:14px;
  font-size:14px;
  color:var(--c-sub);
}
.article-lead{
  margin:26px 0 0;
  padding:20px 22px;
  border-left:3px solid var(--c-main);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  background:var(--c-panel);
  color:#D8DEE4;
  font-size:16px;
}
/* ============ 正文排版 ============ */
.article-body{
  margin-top:36px;
  max-width:780px;
  font-size:17px;
  line-height:1.95;
  color:#E4E8EC;
}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  position:relative;
  margin:40px 0 18px;
  padding-left:14px;
  font-size:24px;
  color:var(--c-text);
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:6px;bottom:6px;
  width:4px;
  border-radius:2px;
  background:var(--c-main);
}
.article-body h3{
  margin:28px 0 12px;
  font-size:20px;
  font-weight:700;
  color:var(--c-text);
}
.article-body blockquote{
  margin:24px 0;
  padding:18px 22px;
  border-left:3px solid var(--c-cyan);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  background:var(--c-panel-2);
  color:#C8D1D8;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body ul,
.article-body ol{
  margin:0 0 1.2em;
  padding-left:0;
  list-style:none;
}
.article-body li{
  position:relative;
  padding-left:22px;
  margin-bottom:10px;
  line-height:1.8;
}
.article-body li::before{
  content:"";
  position:absolute;
  left:4px;top:.78em;
  width:7px;height:7px;
  border-radius:50%;
  background:var(--c-main);
}
.article-body img{
  width:100%;
  height:auto;
  margin:26px 0 8px;
  border-radius:var(--r-sm);
}
.article-body figure{margin:26px 0;}
.article-body figcaption{
  font-size:13px;
  color:var(--c-sub);
  text-align:center;
}
.article-body a{
  color:var(--c-cyan);
  border-bottom:1px solid rgba(20,224,200,.45);
  transition:color .2s ease, border-color .2s ease;
}
.article-body a:hover{color:var(--c-main);border-color:var(--c-main);}
.article-body table{
  width:100%;
  margin:24px 0;
  border-collapse:collapse;
  font-size:15px;
  border:1px solid var(--c-line);
  border-radius:var(--r-sm);
  overflow:hidden;
}
.article-body th,
.article-body td{
  padding:12px 14px;
  border:1px solid var(--c-line);
  text-align:left;
  vertical-align:top;
}
.article-body th{background:var(--c-panel-2);color:var(--c-text);font-weight:700;}
.article-body code{
  padding:2px 6px;
  border-radius:6px;
  background:#1B2128;
  font-family:var(--font-mono);
  font-size:15px;
  color:var(--c-yellow);
}
.article-body pre{
  margin:24px 0;
  padding:18px 20px;
  border-radius:var(--r-sm);
  background:#0E1114;
  border:1px solid var(--c-line);
  overflow-x:auto;
  font-family:var(--font-mono);
  font-size:15px;
  line-height:1.7;
}
.article-body pre code{background:transparent;padding:0;color:#DCE3E8;}
.article-body hr{
  margin:36px 0;
  border:0;
  border-top:1px solid var(--c-line);
}
/* ============ 空态 ============ */
.empty-state{
  margin-top:36px;
  padding:48px 24px;
  text-align:center;
  border:1px dashed var(--c-line);
  border-radius:var(--r-md);
  background:var(--c-panel);
}
.empty-state i{font-size:28px;color:var(--c-sub);}
.empty-state h2{margin:16px 0 8px;font-size:20px;}
.empty-state p{color:var(--c-sub);font-size:15px;margin-bottom:20px;}
/* ============ 侧栏 ============ */
.article-side{min-width:0;}
.side-card{
  padding:22px;
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  background:var(--c-panel);
  margin-bottom:20px;
}
.side-card h3{
  font-size:16px;
  margin-bottom:14px;
  display:flex;
  align-items:center;
  gap:8px;
}
.side-card h3 i{color:var(--c-main);font-size:14px;}
.side-nav li + li{border-top:1px solid var(--c-line);}
.side-nav a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:12px 0;
  font-size:15px;
  color:var(--c-sub);
  transition:color .2s ease, padding-left .2s ease;
}
.side-nav a:hover{color:var(--c-main);padding-left:4px;}
.side-nav a span{color:#3C444D;font-family:var(--font-mono);font-size:13px;}
.side-post{
  display:flex;
  gap:12px;
  padding:12px 0;
  align-items:center;
}
.side-post + .side-post{border-top:1px solid var(--c-line);}
.side-post .thumb{
  width:76px;height:57px;
  flex:none;
  border-radius:10px;
  overflow:hidden;
  background:#1B2128;
}
.side-post .thumb img{width:100%;height:100%;}
.side-post h4{
  font-size:15px;
  font-weight:600;
  line-height:1.5;
  color:#DCE3E8;
  margin-bottom:6px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.side-post .date{font-size:12px;color:var(--c-sub);font-family:var(--font-mono);}
.side-post:hover h4{color:var(--c-main);}
@media (min-width:1024px){
  .article-side-inner{position:sticky;top:88px;}
}
/* ============ 文末区 ============ */
.article-foot{
  margin-top:48px;
  padding-top:32px;
  border-top:1px solid var(--c-line);
}
.article-foot h2{
  font-size:20px;
  margin-bottom:18px;
}
.pager{
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
  margin:32px 0 8px;
}
@media (min-width:640px){
  .pager{grid-template-columns:1fr 1fr;}
}
.pager a{
  display:block;
  padding:18px 20px;
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  background:var(--c-panel);
  transition:transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.pager a:hover{
  transform:translateY(-4px);
  border-color:var(--c-main);
  box-shadow:var(--shadow-dark);
}
.pager .pager-label{font-size:12px;color:var(--c-sub);display:block;margin-bottom:8px;}
.pager .pager-title{font-size:16px;font-weight:700;color:var(--c-text);}
.pager .pager-desc{font-size:14px;color:var(--c-sub);margin-top:6px;}
/* ============ 相关推荐 ============ */
.related-grid{margin-top:24px;}
.related-grid .cell{margin-bottom:24px;}
.post-card{
  display:flex;
  flex-direction:column;
  height:100%;
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  background:var(--c-panel);
  overflow:hidden;
  transition:transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.post-card:hover{
  transform:translateY(-4px);
  border-color:var(--c-main);
  box-shadow:var(--shadow-dark);
}
.post-card .cover{
  position:relative;
  aspect-ratio:4/3;
  overflow:hidden;
  background:#1B2128;
}
.post-card .cover img{
  width:100%;height:100%;
  transition:transform .35s ease;
}
.post-card:hover .cover img{transform:scale(1.04);}
.post-card .cover .badge{
  position:absolute;
  left:12px;top:12px;
  background:rgba(11,13,16,.78);
  border-color:var(--c-line);
  color:var(--c-text);
}
.post-card .body{padding:18px 20px 22px;display:flex;flex-direction:column;flex:1;}
.post-card h3{
  font-size:17px;
  line-height:1.55;
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-card .summary{
  font-size:14px;
  color:var(--c-sub);
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:16px;
}
.post-card .meta{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--c-sub);
}
.post-card .meta .num{font-family:var(--font-mono);}
/* ============ 转化条 ============ */
.cta-bar{
  margin-top:40px;
  display:flex;
  flex-direction:column;
  gap:18px;
  padding:28px 26px;
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  background:
    radial-gradient(120% 160% at 100% 0%, rgba(20,224,200,.12), transparent 60%),
    var(--c-panel);
  box-shadow:var(--shadow-dark);
}
@media (min-width:768px){
  .cta-bar{flex-direction:row;align-items:center;justify-content:space-between;}
}
.cta-bar h2{font-size:20px;margin-bottom:8px;}
.cta-bar p{margin:0;font-size:14px;color:var(--c-sub);}
.cta-bar .cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--c-line);
  background:#080A0C;
  padding:56px 0 0;
  color:var(--c-sub);
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
  padding-bottom:36px;
}
@media (min-width:640px){
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (min-width:1024px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;}
}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand p{font-size:14px;line-height:1.8;margin:0;max-width:30ch;}
.footer-col h4{
  font-size:15px;
  color:var(--c-text);
  margin-bottom:14px;
}
.footer-col ul li + li{margin-top:10px;}
.footer-col a,.footer-col p{
  font-size:14px;
  color:var(--c-sub);
  line-height:1.8;
  margin:0;
  transition:color .2s ease;
}
.footer-col a:hover{color:var(--c-main);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:20px 0 26px;
  border-top:1px solid var(--c-line);
  font-size:13px;
  color:#7C858E;
}
/* ============ 抽屉 ============ */
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(5,6,8,.62);
  z-index:80;
}
.drawer{
  position:fixed;
  top:0;right:0;
  width:88%;
  max-width:360px;
  height:100vh;
  z-index:90;
  background:var(--c-panel);
  border-left:1px solid var(--c-line);
  transform:translateX(102%);
  transition:transform .24s ease;
  display:flex;
  flex-direction:column;
  padding:20px 22px 28px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:18px;
  border-bottom:1px solid var(--c-line);
}
.drawer-nav{padding:8px 0 20px;}
.drawer-nav a{
  display:flex;
  align-items:center;
  min-height:56px;
  font-size:16px;
  color:var(--c-sub);
  border-bottom:1px solid var(--c-line);
  transition:color .2s ease, padding-left .2s ease;
}
.drawer-nav a:hover{color:var(--c-text);padding-left:4px;}
.drawer-nav a.is-active{color:var(--c-main);font-weight:700;}
.drawer-foot{margin-top:auto;font-size:13px;color:#6E767E;line-height:1.8;}
/* ============ 移动吸底 ============ */
.mobile-cta{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:70;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(11,13,16,.96);
  border-top:1px solid var(--c-line);
}
.mobile-cta span{font-size:14px;color:var(--c-sub);}
@media (min-width:768px){
  .mobile-cta{display:none;}
}
@media (max-width:767px){
  body{padding-bottom:76px;}
  :root{--pad-section:56px;}
  .section-title{font-size:24px;}
  .article-head h1{font-size:28px;}
  .article-body{font-size:16px;}
  .crumbs .current{max-width:30ch;}
}
@media (max-width:519px){
  body{font-size:16px;}
  .article-head h1{font-size:24px;}
  .btn{height:44px;padding:0 20px;font-size:15px;}
}
/* Foundation 覆盖 */
.grid-x{margin-left:-12px;margin-right:-12px;}
.grid-x > .cell{padding-left:12px;padding-right:12px;}
.button,.accordion-title{font-family:var(--font-sans);}
.accordion{border:0;background:transparent;}

/* roulang page: category1 */
:root{
  --brand:#FF4D1C;
  --brand-2:#FF7A4D;
  --cyan:#14E0C8;
  --yellow:#FFD84D;
  --ink:#0B0D10;
  --panel:#14181D;
  --panel-2:#1A1F26;
  --line:#262C33;
  --paper:#F6F4EF;
  --t1:#F2F4F6;
  --t2:#9AA4AE;
  --ink-t1:#14181D;
  --ink-t2:#5C6670;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
  --shadow-dark:0 0 0 1px rgba(255,77,28,.28), 0 8px 24px rgba(255,77,28,.18);
  --shadow-light:0 6px 20px rgba(20,24,29,.08);
  --font-num:"DIN Alternate","Inter",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink);
  color:var(--t1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.9;
  letter-spacing:.02em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
@media (min-width:1440px){.container{max-width:1320px}}
@media (max-width:639px){.container{padding:0 24px}}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.04em}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .2s ease,border-color .2s ease,backdrop-filter .2s ease;
}
.site-header.is-solid{
  background:rgba(11,13,16,.96);
  border-bottom-color:var(--line);
  backdrop-filter:blur(10px);
}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand__mark{
  position:relative;width:34px;height:34px;border-radius:11px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  flex:0 0 auto;
}
.brand__mark::before,
.brand__mark::after{
  content:"";position:absolute;left:8px;right:8px;height:3px;border-radius:2px;background:#fff;
}
.brand__mark::before{top:11px}
.brand__mark::after{bottom:11px;background:rgba(255,255,255,.66)}
.brand__text{font-size:18px;font-weight:700;color:#fff;letter-spacing:.02em;white-space:nowrap}
.nav-capsule{
  display:flex;align-items:center;gap:4px;
  padding:6px;margin:0 auto;
  border:1px solid var(--line);border-radius:999px;
  background:rgba(255,255,255,.04);
}
.nav-link{
  display:inline-flex;align-items:center;height:38px;padding:0 16px;
  border-radius:999px;font-size:15px;color:var(--t2);white-space:nowrap;
  transition:background .18s ease,color .18s ease;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.07)}
.nav-link.is-active{background:var(--brand);color:#fff}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.hamburger{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  align-items:center;justify-content:center;
}
.hamburger span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;position:relative}
.hamburger span::before,.hamburger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;border-radius:2px;
}
.hamburger span::before{top:-6px}
.hamburger span::after{top:6px}

/* 抽屉 */
.drawer{
  position:fixed;top:0;right:0;z-index:80;
  width:88%;max-width:360px;height:100vh;
  background:var(--panel);border-left:1px solid var(--line);
  padding:20px 24px 32px;overflow-y:auto;
  transform:translateX(100%);transition:transform .24s ease;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:56px;border-bottom:1px solid var(--line)}
.drawer-title{font-size:15px;color:var(--t2)}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);color:#fff;font-size:20px;line-height:1}
.drawer-nav{margin-top:8px}
.drawer-nav a{
  display:flex;align-items:center;height:56px;
  border-bottom:1px solid var(--line);font-size:16px;color:var(--t1);
}
.drawer-nav a.is-active{color:var(--brand)}
.drawer-cta{margin-top:24px}
.drawer-foot{margin-top:28px;padding-top:20px;border-top:1px solid var(--line);font-size:14px;color:var(--t2);line-height:1.8}
.drawer-overlay{
  position:fixed;inset:0;z-index:70;background:rgba(0,0,0,.62);
  opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;
}
.drawer-overlay.is-open{opacity:1;visibility:visible}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;
  font-size:16px;font-weight:600;white-space:nowrap;
  transition:transform .2s ease,filter .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);color:#fff}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{border:1px solid var(--brand);color:var(--brand);background:transparent}
.btn-ghost:hover{background:rgba(255,77,28,.12);transform:translateY(-2px);color:var(--brand)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:40px;padding:0 18px;font-size:15px}
.btn-xs{height:32px;padding:0 14px;font-size:14px}

/* ---------- 徽章 / 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;border:1px solid var(--line);
  font-size:12px;color:var(--t2);background:rgba(255,255,255,.03);
}
.tag--brand{border-color:rgba(255,77,28,.45);color:var(--brand);background:rgba(255,77,28,.1)}
.tag--cyan{border-color:rgba(20,224,200,.45);color:var(--cyan);background:rgba(20,224,200,.08)}
.tag--ink{border-color:rgba(20,24,29,.16);color:var(--ink-t2);background:#fff}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}

/* ---------- 首屏横幅 ---------- */
.page-banner{
  position:relative;
  padding:72px 0 72px;
  background:linear-gradient(rgba(11,13,16,.78),rgba(11,13,16,.93)),url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-banner::after{
  content:"";position:absolute;right:-60px;top:-40px;width:320px;height:320px;
  background:radial-gradient(circle,rgba(255,77,28,.22),transparent 68%);
  pointer-events:none;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--t2);margin-bottom:20px}
.breadcrumb a{color:var(--t2)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#4b545d}
.banner-title{
  font-size:40px;line-height:1.3;font-weight:700;color:#fff;
  max-width:820px;overflow-wrap:break-word;
}
.banner-sub{margin-top:16px;max-width:660px;font-size:17px;color:var(--t2);line-height:1.85}
.banner-meta{display:flex;flex-wrap:wrap;gap:28px;margin-top:32px}
.meta-item{display:flex;flex-direction:column;gap:2px}
.meta-num{font-family:var(--font-num);font-size:26px;font-weight:700;color:var(--brand)}
.meta-label{font-size:13px;color:var(--t2)}

/* ---------- 板块通用 ---------- */
.section{padding:88px 0}
.section--paper{background:var(--paper);color:var(--ink-t1)}
.section--paper a:hover{color:var(--brand)}
.section--paper .section-sub{color:var(--ink-t2)}
.section-head{max-width:760px;margin-bottom:40px}
.section-title{font-size:28px;line-height:1.3;font-weight:700}
.section-sub{margin-top:12px;font-size:16px;color:var(--t2);line-height:1.8}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;
  font-size:13px;color:var(--cyan);letter-spacing:.14em;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--brand)}

/* ---------- 步骤条 ---------- */
.steps{margin-top:8px}
.step{position:relative;display:grid;grid-template-columns:64px 1fr;gap:24px;padding-bottom:32px}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:31px;top:64px;bottom:0;width:1px;background:var(--line);
}
.step:last-child::before{display:none}
.step-num{
  width:64px;height:64px;border-radius:50%;
  display:grid;place-items:center;
  font-family:var(--font-num);font-size:20px;font-weight:700;color:var(--brand);
  background:rgba(255,77,28,.1);border:1px solid rgba(255,77,28,.42);
}
.step-body{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px;transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.step-body:hover{transform:translateY(-4px);border-color:rgba(255,77,28,.5);box-shadow:var(--shadow-dark)}
.step-body h3{font-size:20px;line-height:1.4;font-weight:700;color:#fff}
.step-body > p{margin-top:10px;font-size:16px;color:var(--t2);line-height:1.85}
.step-points{margin-top:14px;display:grid;gap:8px}
.step-points li{position:relative;padding-left:18px;font-size:15px;color:var(--t2);line-height:1.75}
.step-points li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--cyan);
}

/* ---------- 演示区 ---------- */
.demo-grid{display:grid;grid-template-columns:400px 1fr;gap:56px;align-items:center}
.phone-frame{
  position:relative;width:100%;max-width:400px;aspect-ratio:9/16;
  border-radius:var(--r-lg);overflow:hidden;
  border:1px solid rgba(20,24,29,.14);box-shadow:var(--shadow-light);
  background:#0f1216;
}
.phone-frame img{width:100%;height:100%;object-fit:cover}
.phone-frame::after{
  content:"";position:absolute;inset:auto 0 0 0;height:38%;
  background:linear-gradient(to top,rgba(11,13,16,.92),transparent);
}
.play-btn{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:72px;height:72px;border-radius:50%;background:var(--brand);
  display:grid;place-items:center;z-index:2;
  box-shadow:0 8px 24px rgba(255,77,28,.34);transition:transform .2s ease,filter .2s ease;
}
.play-btn::before{
  content:"";width:0;height:0;margin-left:4px;
  border-left:16px solid #fff;border-top:10px solid transparent;border-bottom:10px solid transparent;
}
.play-btn:hover{transform:translate(-50%,-50%) scale(1.06);filter:brightness(1.06)}
.duration-badge{
  position:absolute;right:14px;top:14px;z-index:2;
  height:26px;padding:0 12px;border-radius:999px;
  display:inline-flex;align-items:center;
  background:var(--yellow);color:#14181D;font-size:12px;font-weight:700;
  font-family:var(--font-num);
}
.frame-caption{
  position:absolute;left:18px;right:18px;bottom:18px;z-index:2;
  color:#fff;font-size:14px;line-height:1.5;
}
.demo-list{margin-top:8px;display:grid;gap:2px}
.demo-list li{
  display:flex;gap:14px;padding:16px 0;
  border-bottom:1px solid rgba(20,24,29,.1);
}
.demo-list li:last-child{border-bottom:0}
.demo-idx{
  flex:0 0 auto;font-family:var(--font-num);font-size:15px;font-weight:700;
  color:var(--brand);padding-top:2px;
}
.demo-list strong{display:block;font-size:17px;color:var(--ink-t1);font-weight:700}
.demo-list span{display:block;font-size:15px;color:var(--ink-t2);line-height:1.75}

/* ---------- 卡片网格 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.card:hover{transform:translateY(-4px);border-color:rgba(255,77,28,.5);box-shadow:var(--shadow-dark)}
.card-media{position:relative;aspect-ratio:4/3;overflow:hidden;background:#0f1216}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-badge{position:absolute;left:14px;top:14px;z-index:2}
.card-body{padding:20px 22px 24px}
.card-body h3{margin-top:10px;font-size:19px;font-weight:700;color:#fff;line-height:1.45}
.card-body p{margin-top:10px;font-size:15px;color:var(--t2);line-height:1.75}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:880px}
.faq-item{
  border:1px solid rgba(20,24,29,.14);border-radius:14px;background:#fff;overflow:hidden;
  transition:border-color .2s ease;
}
.faq-item.is-open{border-color:rgba(255,77,28,.5)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:17px;font-weight:700;color:var(--ink-t1);text-align:left;line-height:1.6;
}
.faq-q:hover{color:var(--brand)}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  border:1px solid rgba(20,24,29,.2);display:grid;place-items:center;
  font-family:var(--font-num);font-size:16px;line-height:1;color:var(--brand);
  transition:transform .2s ease,background .2s ease;
}
.faq-item.is-open .faq-icon{background:var(--brand);color:#fff;border-color:var(--brand);transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease}
.faq-a p{padding:0 22px 20px;font-size:16px;line-height:1.85;color:var(--ink-t2)}

/* ---------- CTA ---------- */
.cta-wrap{padding:0 0 88px}
.cta-inner{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  padding:34px 38px;border-radius:var(--r-lg);
  background:linear-gradient(120deg,var(--panel-2),var(--panel));
  border:1px solid var(--line);
}
.cta-inner::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:6px;
  background:linear-gradient(180deg,var(--brand),var(--cyan));
}
.cta-title{font-size:22px;font-weight:700;color:#fff;line-height:1.4}
.cta-text{margin-top:8px;font-size:15px;color:var(--t2)}
.cta-actions{display:flex;gap:12px;flex:0 0 auto}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);border-top:1px solid var(--line)}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:36px;
  padding:64px 0 0;
}
.footer-brand .brand{margin-bottom:14px}
.footer-brand p{font-size:15px;color:var(--t2);line-height:1.8;max-width:300px}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.04em}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:15px;color:var(--t2)}
.footer-col a:hover{color:var(--brand)}
.footer-col p{font-size:15px;color:var(--t2);line-height:1.8;margin-bottom:10px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:48px;padding:20px 0 28px;border-top:1px solid var(--line);
  font-size:14px;color:var(--t2);
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-capsule{display:none}
  .hamburger{display:inline-flex}
  .header-cta{display:none}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .demo-grid{grid-template-columns:1fr;gap:40px}
  .phone-frame{max-width:340px;margin:0 auto;height:min(60vh,560px);aspect-ratio:auto}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:64px 0}
}
@media (max-width:639px){
  body{font-size:16px}
  .header-inner{height:60px;gap:12px}
  .brand__text{font-size:16px}
  .page-banner{padding:48px 0 52px}
  .banner-title{font-size:32px}
  .banner-sub{font-size:16px}
  .banner-meta{gap:20px}
  .meta-num{font-size:22px}
  .section{padding:56px 0}
  .section-title{font-size:24px}
  .section-head{margin-bottom:28px}
  .step{grid-template-columns:44px 1fr;gap:16px;padding-bottom:24px}
  .step-num{width:44px;height:44px;font-size:16px;font-weight:700}
  .step::before{left:21px;top:44px}
  .step-body{padding:20px}
  .step-body h3{font-size:18px}
  .grid-3{grid-template-columns:1fr}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:26px 24px}
  .cta-actions{width:100%;flex-wrap:wrap}
  .cta-actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-top:48px}
  .footer-bottom{margin-top:32px;flex-direction:column;align-items:flex-start}
  .cta-wrap{padding:0 0 56px}
}

/* roulang page: category2 */
/* ================= 设计变量 ================= */
:root{
  --bg:#0B0D10;
  --bg-soft:#101419;
  --panel:#14181D;
  --line:#262C33;
  --line-strong:#333B44;
  --primary:#FF4D1C;
  --primary-soft:rgba(255,77,28,.12);
  --accent:#14E0C8;
  --accent-soft:rgba(20,224,200,.12);
  --signal:#FFD84D;
  --light:#F6F4EF;
  --light-panel:#FFFFFF;
  --txt:#F2F4F6;
  --txt-2:#9AA4AE;
  --dash-txt:#14181D;
  --dash-txt-2:#5C6670;
  --dash-line:rgba(20,24,29,.12);
  --radius-lg:24px;
  --radius:16px;
  --radius-sm:12px;
  --maxw:1200px;
  --font-num:"Inter","DIN Alternate","SFMono-Regular",Consolas,monospace;
  --shadow-dark:0 0 0 1px var(--line),0 8px 24px rgba(255,77,28,.18);
  --shadow-light:0 6px 20px rgba(20,24,29,.08);
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ================= 基础 reset ================= */
*,
*::before,
*::after{box-sizing:border-box}

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

body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--txt);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:.02em;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}

h1,h2,h3,h4,h5,h6{
  margin:0;
  font-family:inherit;
  font-weight:700;
  line-height:1.3;
  color:var(--txt);
  letter-spacing:.01em;
}

p{margin:0}

a{
  color:var(--accent);
  text-decoration:none;
  transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease);
}
a:hover{color:var(--primary)}

img{
  display:block;
  max-width:100%;
  height:auto;
  border:0;
}

ul,ol{margin:0;padding:0;list-style:none}

button{
  font-family:inherit;
  font-size:inherit;
  line-height:inherit;
  color:inherit;
  background:none;
  border:0;
  padding:0;
  cursor:pointer;
}

input,textarea{
  font-family:inherit;
  font-size:inherit;
  color:inherit;
}

::selection{background:var(--primary);color:#14181D}

:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:3px;
}

.num{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  letter-spacing:.04em;
}

/* ================= 容器与板块 ================= */
.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}

@media (min-width:1024px){
  .container{padding-left:32px;padding-right:32px}
}

@media (min-width:1440px){
  .container{max-width:1320px}
}

.section{padding:56px 0;position:relative}
@media (min-width:1024px){
  .section{padding:88px 0}
}

.section--light{
  background:var(--light);
  color:var(--dash-txt);
}
.section--light h1,
.section--light h2,
.section--light h3,
.section--light h4{color:var(--dash-txt)}
.section--light p{color:var(--dash-txt-2)}

.section--alt{background:var(--bg-soft)}

.section-head{
  max-width:760px;
  margin-bottom:32px;
}
.section-head--tight{margin-bottom:24px}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:12px;
  letter-spacing:.18em;
  color:var(--primary);
  margin-bottom:14px;
  text-transform:uppercase;
}
.eyebrow::before{
  content:"";
  width:24px;
  height:2px;
  background:var(--primary);
  display:block;
  border-radius:2px;
}

.section-head h2{
  font-size:24px;
  margin-bottom:0;
}
@media (min-width:1024px){
  .section-head h2{font-size:28px}
}

.section-head p{
  margin-top:12px;
  font-size:15px;
  line-height:1.85;
  color:var(--txt-2);
}

/* ================= 导航 ================= */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  width:100%;
  background:rgba(11,13,16,0);
  border-bottom:1px solid transparent;
  transition:background-color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header.is-solid{
  background:rgba(11,13,16,.94);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom-color:var(--line);
}

.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  min-height:60px;
}
@media (min-width:1024px){
  .header-inner{min-height:76px;gap:24px}
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--txt);
  font-weight:700;
  font-size:16px;
  letter-spacing:.02em;
  white-space:nowrap;
}
.brand:hover{color:var(--txt)}

.brand__mark{
  position:relative;
  flex:0 0 auto;
  width:28px;
  height:28px;
  border-radius:9px;
  overflow:hidden;
  background:linear-gradient(135deg,#FF4D1C 0%,#FF8A3D 100%);
  box-shadow:0 0 0 1px rgba(255,77,28,.45);
}
.brand__mark::before{
  content:"";
  position:absolute;
  left:-6px;
  top:9px;
  width:40px;
  height:3px;
  border-radius:2px;
  background:rgba(255,255,255,.92);
  transform:rotate(-32deg);
}
.brand__mark::after{
  content:"";
  position:absolute;
  left:-6px;
  top:17px;
  width:40px;
  height:3px;
  border-radius:2px;
  background:rgba(11,13,16,.55);
  transform:rotate(-32deg);
}
@media (min-width:1024px){
  .brand{font-size:17px}
}

.nav-capsule{display:none}

@media (min-width:1024px){
  .nav-capsule{
    display:flex;
    align-items:center;
    gap:4px;
    padding:6px;
    border:1px solid var(--line);
    border-radius:999px;
    background:rgba(20,24,29,.72);
  }
  .nav-link{
    display:inline-block;
    padding:9px 16px;
    border-radius:999px;
    font-size:14px;
    color:var(--txt-2);
    white-space:nowrap;
  }
  .nav-link:hover{
    color:var(--txt);
    background:rgba(255,255,255,.06);
  }
  .nav-link.is-active{
    background:var(--primary);
    color:#14181D;
    font-weight:700;
  }
  .nav-link.is-active:hover{
    background:#FF6236;
    color:#14181D;
  }
}

.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
}
@media (min-width:1024px){
  .header-actions .btn{display:inline-flex}
}

.nav-toggle{
  display:inline-flex;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:44px;
  height:44px;
  padding:0 11px;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:rgba(20,24,29,.72);
  transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--primary)}
.nav-toggle span{
  display:block;
  height:2px;
  border-radius:2px;
  background:var(--txt);
}
.nav-toggle span:nth-child(2){width:70%}
@media (min-width:1024px){
  .nav-toggle{display:none}
}

.btn--header{display:none}
@media (min-width:1024px){
  .btn--header{display:inline-flex}
}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;
  inset:0;
  z-index:80;
  background:rgba(5,7,9,.66);
  opacity:0;
  visibility:hidden;
  transition:opacity .25s var(--ease),visibility .25s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}

.drawer{
  position:fixed;
  top:0;
  right:0;
  bottom:0;
  z-index:90;
  width:88%;
  max-width:380px;
  display:flex;
  flex-direction:column;
  background:var(--panel);
  border-left:1px solid var(--line);
  transform:translateX(100%);
  transition:transform .28s var(--ease);
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}

.drawer__head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:16px 20px;
  border-bottom:1px solid var(--line);
}
.drawer__close{
  width:44px;
  height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  font-size:20px;
  color:var(--txt-2);
}
.drawer__close:hover{border-color:var(--primary);color:var(--primary)}

.drawer__list{padding:8px 20px 0}
.drawer__list a{
  display:flex;
  align-items:center;
  min-height:56px;
  font-size:15px;
  color:var(--txt);
  border-bottom:1px solid var(--line);
}
.drawer__list a:hover{color:var(--primary)}
.drawer__list a.is-active{color:var(--primary);font-weight:700}

.drawer__foot{
  margin-top:auto;
  padding:20px;
  border-top:1px solid var(--line);
}
.drawer__foot .btn{width:100%;justify-content:center}
.drawer__foot p{
  margin-top:12px;
  font-size:13px;
  line-height:1.7;
  color:var(--txt-2);
}

body.drawer-open{overflow:hidden}

/* ================= 按钮 ================= */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:999px;
  font-weight:700;
  letter-spacing:.02em;
  text-align:center;
  white-space:nowrap;
  border:1px solid transparent;
  transition:transform .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn:active{transform:translateY(1px)}

.btn--sm{height:32px;padding:0 16px;font-size:13px}
.btn--md{height:40px;padding:0 20px;font-size:14px}
.btn--lg{height:48px;padding:0 28px;font-size:15px}

.btn--primary{
  background:var(--primary);
  color:#14181D;
}
.btn--primary:hover{
  background:#FF6236;
  color:#14181D;
  transform:translateY(-2px);
  box-shadow:0 8px 20px rgba(255,77,28,.28);
}

.btn--ghost{
  background:transparent;
  border-color:var(--primary);
  color:var(--primary);
}
.btn--ghost:hover{
  background:var(--primary-soft);
  color:#FF8158;
  transform:translateY(-2px);
}

.btn--quiet{
  background:rgba(255,255,255,.05);
  border-color:var(--line);
  color:var(--txt);
}
.btn--quiet:hover{
  border-color:var(--accent);
  color:var(--accent);
  transform:translateY(-2px);
}

.btn--dark{
  background:#14181D;
  color:#F6F4EF;
}
.btn--dark:hover{background:#0B0D10;color:#F6F4EF;transform:translateY(-2px)}

/* ================= 标签与徽章 ================= */
.tag{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(20,24,29,.6);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--txt-2);
  white-space:nowrap;
}
.tag--primary{border-color:rgba(255,77,28,.5);color:var(--primary);background:var(--primary-soft)}
.tag--accent{border-color:rgba(20,224,200,.45);color:var(--accent);background:var(--accent-soft)}
.tag--signal{border-color:rgba(255,216,77,.5);color:var(--signal);background:rgba(255,216,77,.1)}

.tag-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:22px;
}

.section--light .tag{
  border-color:var(--dash-line);
  background:#fff;
  color:var(--dash-txt-2);
}

/* ================= 页面 Banner ================= */
.page-banner{
  position:relative;
  overflow:hidden;
  padding:44px 0 48px;
  border-bottom:1px solid var(--line);
  background:#0B0D10;
}
@media (min-width:1024px){
  .page-banner{padding:64px 0 72px}
}

.page-banner::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;
  background-position:center;
  opacity:.3;
}
.page-banner::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(100deg,rgba(11,13,16,.96) 0%,rgba(11,13,16,.74) 52%,rgba(11,13,16,.92) 100%);
}
.page-banner .container{
  position:relative;
  z-index:2;
}

.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin-bottom:20px;
  font-size:13px;
  color:var(--txt-2);
}
.breadcrumb a{color:var(--txt-2)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:#4A535C}

.page-banner h1{
  font-size:28px;
  max-width:18em;
  margin-bottom:0;
}
@media (min-width:768px){
  .page-banner h1{font-size:34px}
}
@media (min-width:1024px){
  .page-banner h1{font-size:40px}
}

.banner-sub{
  margin-top:16px;
  max-width:640px;
  font-size:15px;
  line-height:1.85;
  color:var(--txt-2);
}
@media (min-width:1024px){
  .banner-sub{font-size:17px}
}

/* ================= 图文速览行 ================= */
.feature-list{
  display:flex;
  flex-direction:column;
  gap:36px;
}
@media (min-width:1024px){
  .feature-list{gap:56px}
}

.feature-item{
  display:grid;
  grid-template-columns:1fr;
  gap:20px;
  align-items:center;
  padding-bottom:32px;
  border-bottom:1px solid var(--line);
}
.feature-item:last-child{
  border-bottom:0;
  padding-bottom:0;
}

@media (min-width:1024px){
  .feature-item{
    grid-template-columns:minmax(0,1fr) minmax(0,1fr);
    gap:48px;
    padding-bottom:48px;
  }
  .feature-item--reverse .feature-media{order:2}
  .feature-item--reverse .feature-body{order:1}
}

.feature-media{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--panel);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),transform .25s var(--ease);
}
.feature-media img{
  width:100%;
  aspect-ratio:4 / 3;
  object-fit:cover;
  transition:transform .4s var(--ease);
}
.feature-item:hover .feature-media{
  border-color:rgba(255,77,28,.55);
  transform:translateY(-4px);
  box-shadow:var(--shadow-dark);
}
.feature-item:hover .feature-media img{transform:scale(1.04)}

.feature-media__no{
  position:absolute;
  left:14px;
  top:14px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:44px;
  height:28px;
  padding:0 10px;
  border-radius:999px;
  background:rgba(11,13,16,.82);
  border:1px solid rgba(255,255,255,.14);
  font-size:13px;
  font-weight:700;
  color:var(--signal);
}

.feature-body h3{
  font-size:20px;
  margin-bottom:14px;
}
@media (min-width:1024px){
  .feature-body h3{font-size:22px}
}

.feature-desc{
  font-size:15px;
  line-height:1.9;
  color:var(--txt-2);
}
.feature-desc + .feature-desc{margin-top:10px}

.stat-strip{
  display:flex;
  align-items:baseline;
  gap:12px;
  margin-top:20px;
  padding:12px 18px;
  border:1px solid var(--line);
  border-left:3px solid var(--primary);
  border-radius:var(--radius-sm);
  background:rgba(20,24,29,.7);
}
.stat-strip__num{
  font-size:20px;
  font-weight:700;
  color:var(--signal);
}
.stat-strip__label{
  font-size:13px;
  color:var(--txt-2);
}

/* ================= 更新节奏卡（浅底） ================= */
.rhythm-card{
  height:100%;
  display:flex;
  flex-direction:column;
  padding:24px 22px;
  border:1px solid var(--dash-line);
  border-radius:var(--radius);
  background:var(--light-panel);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.rhythm-card:hover{
  transform:translateY(-4px);
  border-color:rgba(255,77,28,.55);
  box-shadow:var(--shadow-light);
}
.rhythm-card__time{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 10px;
  align-self:flex-start;
  border-radius:999px;
  background:rgba(255,77,28,.1);
  border:1px solid rgba(255,77,28,.35);
  font-size:13px;
  font-weight:700;
  color:#D93C10;
  margin-bottom:16px;
}
.rhythm-card h3{
  font-size:18px;
  margin-bottom:10px;
}
.rhythm-card p{
  font-size:14px;
  line-height:1.8;
  color:var(--dash-txt-2);
}

.rhythm-grid{margin-bottom:-20px}
.rhythm-grid .cell{margin-bottom:20px}

/* ================= 编号清单 ================= */
.number-list{
  border-top:1px solid var(--line);
}
.number-list__item{
  display:flex;
  align-items:flex-start;
  gap:18px;
  padding:20px 4px;
  border-bottom:1px solid var(--line);
  transition:background-color .22s var(--ease);
}
.number-list__item:hover{background:rgba(255,255,255,.03)}

.number-list__no{
  flex:0 0 auto;
  width:56px;
  font-size:28px;
  font-weight:800;
  line-height:1.25;
  color:var(--primary);
}
@media (max-width:639px){
  .number-list__no{width:40px;font-size:22px}
}

.number-list__body{flex:1 1 auto;min-width:0}
.number-list__body h3{
  font-size:17px;
  margin-bottom:6px;
}
.number-list__body p{
  font-size:14px;
  line-height:1.8;
  color:var(--txt-2);
}

.number-list__arrow{
  flex:0 0 auto;
  align-self:center;
  font-size:18px;
  color:var(--txt-2);
  transition:transform .22s var(--ease),color .22s var(--ease);
}
.number-list__item:hover .number-list__arrow{
  transform:translateX(4px);
  color:var(--primary);
}

/* ================= FAQ ================= */
.faq-accordion{
  margin:0;
  border:0;
  background:transparent;
  list-style:none;
}
.faq-accordion .accordion-item{
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:rgba(20,24,29,.6);
  margin-bottom:12px;
  overflow:hidden;
}
.faq-accordion .accordion-item:last-child{margin-bottom:0}

.faq-accordion .accordion-title{
  display:block;
  position:relative;
  padding:18px 54px 18px 20px;
  font-size:16px;
  font-weight:700;
  line-height:1.6;
  color:var(--txt);
  background:transparent;
  border:0;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.faq-accordion .accordion-title:hover{
  color:var(--primary);
  background:rgba(255,255,255,.03);
}
.faq-accordion .accordion-title::before{
  content:"+";
  position:absolute;
  right:20px;
  top:50%;
  transform:translateY(-50%);
  font-family:var(--font-num);
  font-size:20px;
  line-height:1;
  color:var(--primary);
  transition:transform .2s var(--ease);
}
.faq-accordion .accordion-item.is-active .accordion-title::before{
  content:"−";
  transform:translateY(-50%) rotate(180deg);
}
.faq-accordion .accordion-content{
  padding:0 20px 18px;
  border:0;
  background:transparent;
  color:var(--txt-2);
  font-size:15px;
  line-height:1.85;
}
.faq-accordion .accordion-content p{color:var(--txt-2)}

/* ================= CTA 转化条 ================= */
.cta-band{
  display:flex;
  flex-direction:column;
  gap:22px;
  padding:32px 24px;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  background:linear-gradient(120deg,rgba(255,77,28,.14) 0%,rgba(20,24,29,.92) 46%,rgba(20,224,200,.1) 100%);
  box-shadow:0 0 0 1px rgba(255,77,28,.12),0 8px 24px rgba(255,77,28,.14);
}
@media (min-width:1024px){
  .cta-band{
    flex-direction:row;
    align-items:center;
    justify-content:space-between;
    gap:40px;
    padding:40px 44px;
  }
}
.cta-band__text h2{
  font-size:22px;
  margin-bottom:10px;
}
@media (min-width:1024px){
  .cta-band__text h2{font-size:26px}
}
.cta-band__text p{
  font-size:15px;
  line-height:1.85;
  color:var(--txt-2);
  max-width:620px;
}
.cta-band__actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  flex:0 0 auto;
}

/* ================= 页脚 ================= */
.site-footer{
  background:#080A0C;
  border-top:1px solid var(--line);
  padding:48px 0 28px;
}
@media (min-width:1024px){
  .site-footer{padding:64px 0 32px}
}

.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
}
@media (min-width:640px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (min-width:1024px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
}

.footer-brand .brand{margin-bottom:14px}
.footer-brand p{
  font-size:14px;
  line-height:1.85;
  color:var(--txt-2);
  max-width:320px;
}

.footer-col h4{
  font-size:15px;
  color:var(--txt);
  margin-bottom:16px;
}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{
  font-size:14px;
  color:var(--txt-2);
}
.footer-col ul li a:hover{color:var(--primary)}
.footer-col p{
  font-size:14px;
  line-height:1.85;
  color:var(--txt-2);
  margin-bottom:10px;
}

.footer-bottom{
  display:flex;
  flex-direction:column;
  gap:8px;
  margin-top:36px;
  padding-top:20px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--txt-2);
}
@media (min-width:768px){
  .footer-bottom{
    flex-direction:row;
    align-items:center;
    justify-content:space-between;
  }
}

/* ================= 通用栅格微调 ================= */
.grid-margin-x{margin-left:-10px;margin-right:-10px}
.grid-margin-x > .cell{margin-left:10px;margin-right:10px}

@media (max-width:639px){
  .page-banner h1{font-size:26px}
  .feature-body h3{font-size:18px}
  .stat-strip{flex-direction:column;gap:4px;align-items:flex-start}
}

/* roulang page: category3 */
:root{
  --brand:#FF4D1C;
  --brand-soft:rgba(255,77,28,.18);
  --cyan:#14E0C8;
  --yellow:#FFD84D;
  --bg:#0B0D10;
  --panel:#14181D;
  --panel-2:#1A1F26;
  --line:#262C33;
  --cream:#F6F4EF;
  --ink:#F2F4F6;
  --ink-2:#9AA4AE;
  --ink-dark:#14181D;
  --ink-dark-2:#5C6670;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
  --shadow-dark:0 0 0 1px var(--line),0 8px 24px rgba(255,77,28,.14);
  --shadow-cream:0 6px 20px rgba(20,24,29,.08);
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"Inter","DIN Alternate","Helvetica Neue",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}

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

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.9;
  letter-spacing:.02em;
  text-align:left;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea{font-family:inherit;font-size:16px;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:.01em;}
p{margin:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px;}

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

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 26px;
  border-radius:999px;
  font-size:16px;
  font-weight:600;
  letter-spacing:.04em;
  border:1px solid transparent;
  transition:transform .2s ease,background-color .2s ease,border-color .2s ease,box-shadow .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn--primary{background:var(--brand);color:#15100C;box-shadow:0 0 0 1px rgba(255,77,28,.35),0 8px 20px rgba(255,77,28,.2);}
.btn--primary:hover{background:#ff6236;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(255,77,28,.5),0 12px 26px rgba(255,77,28,.26);}
.btn--primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(255,77,28,.4),0 4px 12px rgba(255,77,28,.18);}
.btn--ghost{border-color:rgba(20,224,200,.6);color:var(--cyan);background:transparent;}
.btn--ghost:hover{background:rgba(20,224,200,.1);border-color:var(--cyan);transform:translateY(-2px);}
.btn--ghost:active{transform:translateY(0);}
.btn--sm{min-height:40px;padding:0 20px;font-size:15px;}
.btn--block{width:100%;}
.btn--dark{background:var(--ink-dark);color:#fff;}
.btn--dark:hover{background:#242a32;transform:translateY(-2px);}

.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:15px;}
.link-arrow i{transition:transform .2s ease;}
.link-arrow:hover i{transform:translateX(4px);}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  font-size:12px;
  line-height:1;
  letter-spacing:.06em;
  border:1px solid var(--line);
  color:var(--ink-2);
  background:rgba(255,255,255,.02);
  white-space:nowrap;
}
.badge--brand{border-color:rgba(255,77,28,.55);color:#FF8A63;background:rgba(255,77,28,.1);}
.badge--cyan{border-color:rgba(20,224,200,.5);color:var(--cyan);background:rgba(20,224,200,.08);}
.badge--solid{background:var(--brand);border-color:var(--brand);color:#15100C;font-weight:600;}
.badge--ink{border-color:rgba(20,24,29,.18);color:var(--ink-dark-2);background:rgba(20,24,29,.04);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:60;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.site-header.is-solid{
  background:rgba(11,13,16,.96);
  border-bottom-color:var(--line);
  backdrop-filter:blur(8px);
}
.header__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:72px;
}
.brand{display:inline-flex;align-items:center;gap:10px;}
.brand__mark{
  width:30px;height:30px;border-radius:9px;
  background:linear-gradient(135deg,var(--brand) 0%,#FF8A63 55%,var(--cyan) 100%);
  position:relative;flex:0 0 auto;
  box-shadow:0 0 0 1px rgba(255,255,255,.08);
}
.brand__mark::after{
  content:"";position:absolute;inset:9px 7px;
  border-radius:2px;
  border-top:2px solid rgba(11,13,16,.75);
  border-bottom:2px solid rgba(11,13,16,.75);
}
.brand__text{font-size:18px;font-weight:700;letter-spacing:.04em;color:var(--ink);}
.nav-capsule{
  display:flex;
  align-items:center;
  gap:4px;
  padding:5px;
  border-radius:999px;
  border:1px solid rgba(38,44,51,.9);
  background:rgba(20,24,29,.62);
}
.nav-link{
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 16px;
  border-radius:999px;
  font-size:15px;
  color:var(--ink-2);
  white-space:nowrap;
  transition:color .2s ease,background-color .2s ease;
}
.nav-link:hover{color:var(--ink);background:rgba(255,255,255,.05);}
.nav-link.is-active{background:var(--brand);color:#15100C;font-weight:600;}
.header__actions{display:flex;align-items:center;gap:12px;}
.nav-trigger{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  background:rgba(20,24,29,.7);
}
.nav-trigger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.nav-trigger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-trigger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-trigger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- 移动抽屉 ---------- */
.nav-scrim{
  position:fixed;inset:0;z-index:70;
  background:rgba(6,7,9,.7);
  opacity:0;visibility:hidden;
  transition:opacity .2s ease,visibility .2s ease;
}
.nav-scrim.is-open{opacity:1;visibility:visible;}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:80;
  width:88%;max-width:400px;
  background:var(--panel);
  border-left:1px solid var(--line);
  transform:translateX(100%);
  transition:transform .24s ease;
  display:flex;flex-direction:column;
  padding:20px 22px 28px;
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0);}
.nav-drawer__head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);}
.nav-drawer__close{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--ink-2);font-size:16px;
}
.nav-drawer__close:hover{color:var(--ink);border-color:var(--brand);}
.nav-drawer__list{display:flex;flex-direction:column;margin:8px 0 20px;}
.nav-drawer__list a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:56px;font-size:16px;color:var(--ink-2);
  border-bottom:1px solid var(--line);
}
.nav-drawer__list a:hover,.nav-drawer__list a.is-active{color:var(--ink);}
.nav-drawer__list a.is-active{color:var(--brand);font-weight:600;}
.nav-drawer__note{margin-top:18px;font-size:14px;color:var(--ink-2);line-height:1.8;}

/* ---------- 页面 Banner ---------- */
.page-banner{
  position:relative;
  margin-top:0;
  padding:150px 0 76px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.page-banner__bg{
  position:absolute;inset:0;
  background-size:cover;
  background-position:center;
  filter:saturate(.9);
}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(11,13,16,.94) 0%,rgba(11,13,16,.82) 48%,rgba(11,13,16,.7) 100%);
}
.page-banner__inner{position:relative;z-index:2;max-width:820px;}
.page-banner h1{
  margin-top:20px;
  font-size:40px;
  letter-spacing:.02em;
}
.page-banner h1 em{font-style:normal;color:var(--brand);}
.page-banner p{
  margin-top:18px;
  font-size:17px;
  color:var(--ink-2);
  max-width:680px;
}
.page-banner__meta{
  display:flex;flex-wrap:wrap;gap:10px;
  margin-top:28px;
}
.page-banner__meta span{
  display:inline-flex;align-items:center;gap:8px;
  height:34px;padding:0 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(20,24,29,.6);
  font-size:13px;color:var(--ink-2);
  font-family:var(--font-num);
}
.page-banner__meta span::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--cyan);
}

/* ---------- 板块通用 ---------- */
.section{padding:88px 0;}
.section--cream{background:var(--cream);color:var(--ink-dark);}
.section--cream .section__head p{color:var(--ink-dark-2);}
.section--tight{padding-top:0;}
.section__head{max-width:720px;margin-bottom:40px;}
.eyebrow{
  display:inline-block;
  font-size:13px;
  letter-spacing:.16em;
  color:var(--brand);
  font-family:var(--font-num);
  text-transform:uppercase;
}
.section--cream .eyebrow{color:#C8380F;}
.section__head h2{margin-top:12px;font-size:28px;}
.section__head p{margin-top:14px;font-size:16px;color:var(--ink-2);}
.section__head--split{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  max-width:none;
}
.section__head--split .section__head{max-width:720px;margin-bottom:0;}

/* ---------- 帮助卡片网格 ---------- */
.grid-x{display:flex;flex-flow:row wrap;}
.grid-x>.cell{flex:0 0 auto;min-width:0;}
.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-margin-x>.cell{padding-left:12px;padding-right:12px;margin-bottom:24px;}
.small-12{width:100%;}
.medium-6{width:50%;}
.large-4{width:33.3333%;}

.help-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.help-card:hover{
  transform:translateY(-4px);
  border-color:rgba(255,77,28,.55);
  box-shadow:0 0 0 1px rgba(255,77,28,.35),0 12px 28px rgba(255,77,28,.16);
}
.help-card__media{
  position:relative;
  display:block;
  aspect-ratio:4/3;
  overflow:hidden;
  background:var(--panel-2);
}
.help-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.help-card:hover .help-card__media img{transform:scale(1.04);}
.help-card__media .badge{position:absolute;top:12px;left:12px;background:rgba(11,13,16,.78);}
.help-card__body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.help-card__body h3{font-size:19px;}
.help-card__body p{font-size:15px;color:var(--ink-2);line-height:1.8;flex:1;}
.help-card__foot{display:flex;align-items:center;justify-content:space-between;padding-top:4px;}

/* ---------- 使用路径 ---------- */
.path-list{border-top:1px solid rgba(20,24,29,.12);}
.path-item{
  display:flex;align-items:flex-start;gap:20px;
  padding:22px 12px;
  border-bottom:1px solid rgba(20,24,29,.12);
  transition:background-color .2s ease,padding-left .2s ease;
}
.path-item:hover{background:rgba(255,77,28,.05);padding-left:20px;}
.path-item__num{
  font-family:var(--font-num);
  font-size:32px;line-height:1;font-weight:700;
  color:var(--brand);
  min-width:52px;
}
.path-item__text h3{font-size:17px;}
.path-item__text p{margin-top:6px;font-size:15px;color:var(--ink-dark-2);}

/* ---------- 资讯列表卡 ---------- */
.news-card{
  display:flex;flex-direction:column;height:100%;
  background:#fff;
  border:1px solid rgba(20,24,29,.1);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-cream);border-color:rgba(255,77,28,.4);}
.news-card__media{position:relative;aspect-ratio:4/3;overflow:hidden;background:#E6E2DA;}
.news-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.news-card:hover .news-card__media img{transform:scale(1.04);}
.news-card__media .badge{position:absolute;top:12px;left:12px;background:rgba(246,244,239,.94);border-color:rgba(20,24,29,.14);color:var(--ink-dark);}
.news-card__body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.news-card__body h3{font-size:18px;line-height:1.5;}
.news-card__body p{font-size:15px;color:var(--ink-dark-2);line-height:1.8;flex:1;}
.news-card__meta{
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ink-dark-2);
  font-family:var(--font-num);
  border-top:1px solid rgba(20,24,29,.1);
  padding-top:12px;
}

/* ---------- FAQ ---------- */
.faq{max-width:900px;}
.faq__item{border:1px solid var(--line);border-radius:var(--r-sm);margin-bottom:14px;background:var(--panel);overflow:hidden;}
.faq__q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;
  padding:18px 22px;
  font-size:17px;font-weight:600;text-align:left;
  color:var(--ink);
  transition:color .2s ease;
}
.faq__q:hover{color:var(--brand);}
.faq__q i{color:var(--brand);font-size:15px;transition:transform .2s ease;flex:0 0 auto;}
.faq__item.is-open .faq__q i{transform:rotate(45deg);}
.faq__a{
  max-height:0;
  overflow:hidden;
  transition:max-height .2s ease;
}
.faq__a p{padding:0 22px 22px;font-size:15.5px;color:var(--ink-2);line-height:1.85;}

/* ---------- 转化条 ---------- */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:32px 36px;
  border-radius:var(--r-lg);
  border:1px solid rgba(255,77,28,.35);
  background:linear-gradient(120deg,rgba(255,77,28,.14) 0%,rgba(20,224,200,.08) 100%);
}
.cta-bar h2{font-size:24px;}
.cta-bar p{margin-top:8px;font-size:15px;color:var(--ink-2);}
.cta-bar__actions{display:flex;gap:12px;flex:0 0 auto;}

.sticky-cta{display:none;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#090B0E;
  border-top:1px solid var(--line);
  padding:64px 0 28px;
  color:var(--ink-2);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14.5px;line-height:1.9;color:var(--ink-2);}
.footer-col h4{font-size:15px;color:var(--ink);margin-bottom:16px;letter-spacing:.06em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{font-size:14.5px;color:var(--ink-2);}
.footer-col a:hover{color:var(--brand);}
.footer-col p{font-size:14.5px;line-height:1.9;margin-bottom:8px;}
.footer-bottom{
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:13.5px;color:#6C7681;
  font-family:var(--font-num);
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1439px){
  .container{max-width:1200px;}
}
@media screen and (max-width:1023px){
  .nav-capsule{display:none;}
  .nav-trigger{display:flex;}
  .page-banner{padding:132px 0 64px;}
  .page-banner h1{font-size:32px;}
  .section{padding:64px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .medium-6{width:50%;}
}
@media screen and (max-width:639px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .header__inner{min-height:60px;}
  .brand__text{font-size:16px;}
  .btn--sm{min-height:36px;padding:0 16px;font-size:14px;}
  .page-banner{padding:112px 0 52px;}
  .page-banner h1{font-size:28px;line-height:1.35;}
  .page-banner p{font-size:15.5px;}
  .section{padding:56px 0;}
  .section__head h2{font-size:22px;}
  .medium-6,.large-4{width:100%;}
  .path-item__num{font-size:32px;min-width:40px;}
  .path-item{gap:14px;padding:18px 8px;}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:26px 22px;}
  .cta-bar h2{font-size:20px;}
  .cta-bar__actions{width:100%;flex-direction:column;}
  .cta-bar__actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;font-family:var(--font-cn);}
  .faq__q{font-size:16px;padding:16px 18px;}
  .faq__a p{padding:0 18px 18px;}
  .sticky-cta{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    position:fixed;left:0;right:0;bottom:0;z-index:55;
    height:64px;
    padding:0 16px calc(0px + env(safe-area-inset-bottom,0px));
    background:rgba(11,13,16,.97);
    border-top:1px solid var(--line);
  }
  .sticky-cta span{font-size:14px;color:var(--ink-2);}
  body{padding-bottom:64px;}
}
@media screen and (min-width:1440px){
  .container{max-width:1320px;}
  .page-banner h1{font-size:42px;}
}

/* roulang page: category4 */
:root{
  --ink:#0B0D10;
  --panel:#14181D;
  --panel-2:#1A1F25;
  --line:#262C33;
  --paper:#F6F4EF;
  --orange:#FF4D1C;
  --cyan:#14E0C8;
  --yellow:#FFD84D;
  --text:#F2F4F6;
  --text-dim:#9AA4AE;
  --dark-text:#14181D;
  --dark-dim:#5C6670;
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:12px;
  --pill:999px;
  --shadow-dark:0 0 0 1px rgba(38,44,51,.9), 0 8px 24px rgba(255,77,28,.18);
  --shadow-light:0 6px 20px rgba(20,24,29,.08);
  --gap:24px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.9;
  letter-spacing:.02em;
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
body.drawer-open{overflow:hidden;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease;}
a:hover{color:var(--orange);}
p{margin:0 0 1.1em;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:.01em;}
ul{margin:0;padding:0;list-style:none;}
button,input,textarea{font-family:inherit;}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1024px){.container{padding:0 32px;}}
@media (min-width:1440px){.container{max-width:1320px;}}

/* ---------- 覆盖 Foundation 默认 ---------- */
body,button,input,textarea,select{font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",sans-serif !important;}
a:hover,a:focus{color:var(--orange);}
button,.button{
  background:var(--orange);color:#fff;border:none;border-radius:var(--pill);
  padding:0 28px;height:48px;line-height:48px;font-size:16px;font-weight:600;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;cursor:pointer;
  transition:transform .18s ease,filter .18s ease,background-color .18s ease;
}
button:hover,.button:hover{filter:brightness(1.08);transform:translateY(-2px);}
button:active,.button:active{transform:translateY(0);}
input,textarea{border-radius:var(--radius-sm);}

/* ---------- 通用 ---------- */
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section--paper{background:var(--paper);color:var(--dark-text);}
.section--paper p{color:var(--dark-dim);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:26px;padding:0 12px;
  border:1px solid var(--line);border-radius:var(--pill);
  font-size:12px;letter-spacing:.08em;color:var(--cyan);text-transform:uppercase;
}
.section--paper .eyebrow{border-color:rgba(20,24,29,.18);color:#0F7F70;}
.section-head{max-width:760px;margin-bottom:32px;}
.section-head h2{font-size:28px;margin:16px 0 12px;}
.section-head p{color:var(--text-dim);margin:0;}
.section--paper .section-head p{color:var(--dark-dim);}
.accent-bar{width:64px;height:4px;background:var(--orange);border-radius:2px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--pill);font-weight:600;font-size:16px;
  transition:transform .18s ease,filter .18s ease,background .18s ease,border-color .18s ease;
  cursor:pointer;
}
.btn--primary{background:var(--orange);color:#fff;border:1px solid var(--orange);}
.btn--primary:hover{filter:brightness(1.08);transform:translateY(-2px);color:#fff;}
.btn--primary:active{transform:translateY(0);}
.btn--ghost{background:transparent;color:var(--cyan);border:1px solid var(--cyan);}
.btn--ghost:hover{background:rgba(20,224,200,.1);transform:translateY(-2px);color:var(--cyan);}
.btn--sm{height:40px;padding:0 20px;font-size:15px;}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:var(--pill);
  font-size:12px;border:1px solid var(--line);color:var(--text-dim);
}
.badge--orange{border-color:rgba(255,77,28,.55);color:#FF8A66;}
.badge--cyan{border-color:rgba(20,224,200,.5);color:var(--cyan);}
.section--paper .badge{border-color:rgba(20,24,29,.2);color:var(--dark-dim);}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:transparent;border-bottom:1px solid transparent;
  transition:background-color .2s ease,border-color .2s ease,backdrop-filter .2s ease;
}
.site-header.is-scrolled,.site-header.is-solid{
  background:rgba(11,13,16,.96);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(8px);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  height:72px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none;}
.brand__mark{
  width:26px;height:26px;border-radius:8px;position:relative;flex:none;
  background:linear-gradient(135deg,var(--orange),#FF7A45);
  box-shadow:0 0 0 1px rgba(255,77,28,.35);
}
.brand__mark::after{
  content:"";position:absolute;left:5px;right:5px;top:11px;height:2px;
  background:rgba(11,13,16,.75);border-radius:2px;
  box-shadow:0 -5px 0 rgba(11,13,16,.45),0 5px 0 rgba(11,13,16,.45);
}
.brand__text{font-weight:800;font-size:18px;letter-spacing:.02em;color:#fff;}
.nav-capsule{
  display:none;align-items:center;gap:4px;padding:6px;
  border:1px solid var(--line);border-radius:var(--pill);background:rgba(20,24,29,.7);
}
.nav-link{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:var(--pill);
  font-size:15px;color:var(--text-dim);white-space:nowrap;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05);}
.nav-link.is-active{background:var(--orange);color:#fff;font-weight:600;}
.header-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:44px;height:44px;border-radius:var(--pill);border:1px solid var(--line);
  display:none;align-items:center;justify-content:center;color:var(--text-dim);background:transparent;
  transition:color .2s ease,border-color .2s ease;
}
.icon-btn:hover{color:var(--cyan);border-color:var(--cyan);}
.burger{
  width:44px;height:44px;border-radius:var(--pill);border:1px solid var(--line);
  background:transparent;display:inline-flex;align-items:center;justify-content:center;
  color:var(--text);padding:0;height:44px;
}
.burger:hover{filter:none;transform:none;border-color:var(--orange);color:var(--orange);}
@media (min-width:1024px){
  .nav-capsule{display:flex;}
  .icon-btn{display:inline-flex;}
  .burger{display:none;}
  .header-inner{height:80px;}
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(6,8,10,.65);opacity:0;visibility:hidden;
  transition:opacity .2s ease,visibility .2s ease;z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:88%;max-width:380px;z-index:80;
  background:var(--panel);border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .24s ease;
  display:flex;flex-direction:column;padding:20px 20px 28px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{
  width:44px;height:44px;border-radius:var(--pill);border:1px solid var(--line);
  background:transparent;color:var(--text);padding:0;
}
.drawer-close:hover{filter:none;transform:none;border-color:var(--orange);color:var(--orange);}
.drawer-nav a{
  display:flex;align-items:center;height:56px;border-bottom:1px solid var(--line);
  color:var(--text);font-size:16px;
}
.drawer-nav a.is-active{color:var(--orange);font-weight:600;}
.drawer-cta{margin-top:22px;}
.drawer-foot{margin-top:auto;padding-top:24px;color:var(--text-dim);font-size:14px;line-height:1.8;}

/* ---------- Banner ---------- */
.page-banner{
  position:relative;padding:132px 0 64px;overflow:hidden;
  background:
    linear-gradient(180deg,rgba(11,13,16,.86),rgba(11,13,16,.94)),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.page-banner::after{
  content:"";position:absolute;right:-60px;top:40px;width:320px;height:180px;
  background:linear-gradient(115deg,rgba(255,77,28,.22),rgba(20,224,200,0));
  transform:skewX(-18deg);filter:blur(6px);pointer-events:none;
}
.banner-inner{position:relative;z-index:2;max-width:780px;}
.breadcrumb{font-size:14px;color:var(--text-dim);margin-bottom:18px;}
.breadcrumb a{color:var(--text-dim);}
.breadcrumb a:hover{color:var(--cyan);}
.breadcrumb span.sep{margin:0 8px;color:#414A54;}
.page-banner h1{font-size:32px;margin:14px 0 16px;max-width:20ch;}
.page-banner p{color:var(--text-dim);margin-bottom:24px;max-width:60ch;}
.banner-meta{display:flex;flex-wrap:wrap;gap:10px;}
@media (min-width:1024px){
  .page-banner{padding:160px 0 88px;}
  .page-banner h1{font-size:40px;}
}

/* ---------- 对比表 ---------- */
.compare-wrap{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-dark);
}
table.compare{width:100%;border-collapse:collapse;background:transparent;margin:0;}
table.compare thead th{
  background:rgba(246,244,239,.06);
  color:var(--text);font-size:15px;font-weight:700;text-align:left;
  padding:20px 24px;border-bottom:1px solid var(--line);
}
table.compare tbody td{
  padding:0 24px;height:64px;vertical-align:middle;
  border-bottom:1px solid var(--line);font-size:16px;color:var(--text-dim);
}
table.compare tbody tr:last-child td{border-bottom:none;}
table.compare tbody td:first-child{color:var(--text);font-weight:600;width:38%;}
table.compare tbody tr:hover td{background:rgba(255,77,28,.05);}
.cell-note{color:var(--cyan);}
@media (max-width:639px){
  table.compare thead{display:none;}
  table.compare,table.compare tbody,table.compare tr,table.compare td{display:block;width:100%;}
  table.compare tbody tr{
    padding:18px 20px;border-bottom:1px solid var(--line);
  }
  table.compare tbody tr:last-child{border-bottom:none;}
  table.compare tbody td{
    padding:0;height:auto;border:none;width:100% !important;
  }
  table.compare tbody td:first-child{
    font-size:15px;margin-bottom:8px;
  }
  table.compare tbody td:first-child::before{
    content:"常见疑问";display:block;font-size:12px;font-weight:500;color:#6D7883;letter-spacing:.08em;
  }
  table.compare tbody td:last-child::before{
    content:"实际情况";display:block;font-size:12px;font-weight:500;color:#6D7883;letter-spacing:.08em;margin-top:4px;
  }
}

/* ---------- 咨询区 ---------- */
.consult-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:1024px){
  .consult-grid{grid-template-columns:1fr 1fr;gap:48px;align-items:start;}
}
.consult-figure{
  border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:4/3;background:var(--panel);margin-bottom:26px;
}
.consult-figure img{width:100%;height:100%;object-fit:cover;}
.point-list li{
  display:flex;gap:18px;padding:20px 0;border-top:1px solid var(--line);
}
.point-list li:last-child{border-bottom:1px solid var(--line);}
.point-num{
  font-family:"Inter","DIN Alternate",monospace;font-size:28px;line-height:1;
  color:var(--orange);font-weight:700;flex:none;width:44px;
}
.point-body h3{font-size:18px;margin-bottom:6px;}
.point-body p{margin:0;color:var(--text-dim);font-size:15px;}
.form-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:28px;box-shadow:var(--shadow-dark);
}
@media (min-width:768px){.form-card{padding:36px;}}
.form-card h2{font-size:22px;margin-bottom:10px;}
.form-card > p{color:var(--text-dim);font-size:15px;margin-bottom:26px;}
.field{margin-bottom:20px;}
.field label{display:block;font-size:14px;color:var(--text-dim);margin-bottom:8px;}
.field input,.field textarea{
  width:100%;height:48px;background:#0F1317;border:1px solid var(--line);
  color:var(--text);font-size:16px;padding:0 16px;border-radius:var(--radius-sm);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:132px;padding:14px 16px;line-height:1.7;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:#5D6873;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--orange);box-shadow:0 0 0 2px rgba(255,77,28,.22);
}
.field-hint{font-size:13px;color:#7C8792;margin-top:8px;}
.form-note{font-size:13px;color:var(--yellow);margin-top:14px;min-height:20px;}
.form-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:6px;}

/* ---------- FAQ ---------- */
.faq-list{border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden;background:var(--panel);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:none;}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:22px 24px;font-size:17px;font-weight:700;color:var(--text);
  transition:background-color .2s ease,color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:rgba(255,77,28,.06);color:#fff;}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--cyan);
  font-size:16px;line-height:1;transition:transform .2s ease,border-color .2s ease;
}
.faq-item[open] .faq-icon{transform:rotate(45deg);border-color:var(--cyan);}
.faq-answer{padding:0 24px 24px;color:var(--text-dim);font-size:16px;line-height:1.85;}
.faq-answer p:last-child{margin-bottom:0;}

/* ---------- CTA 条 ---------- */
.cta-bar{
  display:flex;flex-direction:column;gap:18px;
  background:linear-gradient(120deg,rgba(255,77,28,.16),rgba(20,224,200,.08)),var(--panel);
  border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:28px;
}
.cta-bar h2{font-size:22px;margin-bottom:8px;}
.cta-bar p{margin:0;color:var(--text-dim);font-size:15px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
@media (min-width:768px){
  .cta-bar{flex-direction:row;align-items:center;justify-content:space-between;padding:36px 40px;}
  .cta-bar h2{font-size:26px;}
}

/* ---------- 移动吸底 ---------- */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  height:64px;padding:0 16px calc(0px + env(safe-area-inset-bottom));
  background:rgba(11,13,16,.97);border-top:1px solid var(--line);
}
.mobile-bar span{font-size:14px;color:var(--text-dim);}
@media (min-width:1024px){.mobile-bar{display:none;}}
@media (max-width:1023px){body{padding-bottom:72px;}}

/* ---------- 页脚 ---------- */
.site-footer{background:#080A0C;border-top:1px solid var(--line);padding:64px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{color:var(--text-dim);font-size:15px;max-width:30ch;}
.footer-col h4{font-size:16px;margin-bottom:16px;color:var(--text);}
.footer-col ul li{margin-bottom:12px;}
.footer-col a{color:var(--text-dim);font-size:15px;}
.footer-col a:hover{color:var(--orange);}
.footer-col p{color:var(--text-dim);font-size:15px;margin-bottom:10px;}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-direction:column;gap:8px;font-size:14px;color:#6D7883;
}
@media (min-width:768px){
  .footer-bottom{flex-direction:row;align-items:center;justify-content:space-between;}
}