/* roulang page: index */
:root{
  --c-bg-deep:#0C1014;
  --c-bg-deep-2:#12211C;
  --c-surface:#FFFFFF;
  --c-surface-2:#F4F6F8;
  --c-ink:#0F1318;
  --c-ink-2:#4E5A66;
  --c-primary:#00C88C;
  --c-primary-strong:#00A874;
  --c-primary-ink:#04231A;
  --c-accent:#FF7A33;
  --c-line:#E3E8EE;
  --c-line-dark:rgba(255,255,255,.10);
  --c-ok:#14A06A;
  --c-info:#2A7FE0;
  --c-warn:#E0573B;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,19,24,.06);
  --sh-2:0 12px 32px rgba(15,19,24,.10);
  --container:1200px;
  --sp-section:88px;
  --fs-h1:clamp(32px,4.4vw,52px);
  --fs-h2:clamp(24px,2.8vw,34px);
  --fs-h3:clamp(18px,1.6vw,22px);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-surface);
  letter-spacing:.01em;
}
body.is-locked{overflow:hidden}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;letter-spacing:.005em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color .18s ease,opacity .18s ease}
a:hover{color:var(--c-primary)}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--c-primary);
  outline-offset:2px;
  border-radius:6px;
}
img{max-width:100%;display:block}
button,input{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
strong{font-weight:700}
.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;
  clip:rect(0,0,0,0);white-space:nowrap;border:0;
}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:var(--sp-section) 0}
.section--soft{background:var(--c-surface-2)}
.section--deep{background:var(--c-bg-deep);color:#F2F6F4}
.section--tight{padding-top:calc(var(--sp-section) * .6)}
.section__head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:40px;flex-wrap:wrap;
}
.section__head h2{font-size:var(--fs-h2);font-weight:700}
.section__head p{margin-top:12px;color:var(--c-ink-2);max-width:620px}
.section--deep .section__head p{color:rgba(255,255,255,.72)}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.14em;
  color:var(--c-primary);text-transform:uppercase;margin-bottom:12px;
}
.section--deep .eyebrow{color:var(--c-primary)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .18s ease,background .18s ease,box-shadow .18s ease,border-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn--sm{height:40px;padding:0 18px;font-size:14px}
.btn--primary{background:var(--c-primary);color:var(--c-primary-ink);box-shadow:0 6px 16px rgba(0,200,140,.22)}
.btn--primary:hover{background:var(--c-primary-strong);color:var(--c-primary-ink);transform:translateY(-1px);box-shadow:0 10px 24px rgba(0,200,140,.28)}
.btn--primary:active{transform:translateY(0);box-shadow:0 4px 10px rgba(0,200,140,.20)}
.btn--accent{background:var(--c-accent);color:#2A1002;box-shadow:0 6px 16px rgba(255,122,51,.24)}
.btn--accent:hover{background:#F06A21;color:#2A1002;transform:translateY(-1px)}
.btn--accent:active{transform:translateY(0)}
.btn--ghost{background:transparent;border-color:rgba(255,255,255,.3);color:#F2F6F4}
.btn--ghost:hover{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.5)}
.btn--outline{background:transparent;border-color:var(--c-line);color:var(--c-ink)}
.btn--outline:hover{border-color:var(--c-primary);color:var(--c-primary);background:rgba(0,200,140,.06)}
.btn--text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--c-primary);font-weight:600;font-size:15px;padding:4px 0;
}
.btn--text span{transition:transform .18s ease}
.btn--text:hover span{transform:translateX(3px)}

/* 徽章与标签 */
.badge{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:6px;font-size:12px;font-weight:600;
  background:rgba(0,200,140,.10);color:var(--c-primary-strong);
}
.badge--accent{background:rgba(255,122,51,.12);color:#C7541A}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid var(--c-line);font-size:14px;color:var(--c-ink-2);background:#fff;
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.tag:hover{border-color:var(--c-primary);color:var(--c-primary-strong);background:rgba(0,200,140,.05)}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(12,16,20,.94);
  border-bottom:1px solid var(--c-line-dark);
  transition:padding .2s ease,background .2s ease,box-shadow .2s ease;
}
.header__inner{display:flex;align-items:center;gap:28px;height:76px;transition:height .2s ease}
.site-header.is-scrolled{background:rgba(10,14,18,.98);box-shadow:0 8px 24px rgba(0,0,0,.32)}
.site-header.is-scrolled .header__inner{height:64px}
.logo{display:flex;align-items:center;gap:12px;flex-shrink:0}
.logo__mark{
  width:40px;height:40px;border-radius:12px;flex-shrink:0;
  background:linear-gradient(135deg,var(--c-primary) 0%,#00A0C8 100%);
  display:flex;align-items:center;justify-content:center;
}
.logo__mark svg{width:22px;height:22px}
.logo__text{display:flex;flex-direction:column;line-height:1.2}
.logo__text strong{font-size:16px;font-weight:700;color:#F2F6F4;letter-spacing:.01em}
.logo__text small{font-size:11.5px;color:rgba(255,255,255,.52);letter-spacing:.06em}
.logo:hover .logo__text strong{color:var(--c-primary)}
.nav{flex:1;display:flex;justify-content:center}
.nav__list{display:flex;align-items:center;gap:6px}
.nav__item{position:relative}
.nav__link{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 14px;border-radius:var(--r-sm);font-size:15px;font-weight:500;
  color:rgba(255,255,255,.76);
}
.nav__link:hover{color:#fff;background:rgba(255,255,255,.07)}
.nav__link.is-active{color:#fff;background:rgba(0,200,140,.14)}
.nav__link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--c-primary);border-radius:2px;
}
.nav__caret{width:10px;height:10px;opacity:.7}
.header__actions{display:flex;align-items:center;gap:12px;flex-shrink:0}

/* Mega 面板 */
.mega{
  position:absolute;top:calc(100% + 14px);left:50%;transform:translate(-50%,-8px);
  width:640px;background:#fff;border-radius:var(--r-lg);border:1px solid var(--c-line);
  box-shadow:0 24px 60px rgba(8,12,18,.24);
  padding:24px;display:grid;grid-template-columns:1.1fr 1.1fr 1fr;gap:20px;
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .16s ease,transform .16s ease,visibility .16s;
}
.nav__item--has-mega:hover .mega,
.nav__item--has-mega:focus-within .mega{
  opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0);
}
.mega__title{
  font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--c-ink-2);
  margin-bottom:12px;text-transform:uppercase;
}
.mega__link{
  display:block;padding:9px 10px;border-radius:var(--r-sm);
  font-size:14px;color:var(--c-ink);transition:background .16s ease,color .16s ease;
}
.mega__link:hover{background:var(--c-surface-2);color:var(--c-primary-strong)}
.mega__link small{display:block;font-size:12px;color:var(--c-ink-2);margin-top:2px}
.mega__card{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:14px;border-radius:var(--r-md);border:1px solid var(--c-line);
  background:linear-gradient(135deg,rgba(0,200,140,.07),rgba(0,200,140,0));
  margin-bottom:10px;
}
.mega__card b{display:block;font-size:14px;font-weight:700}
.mega__card span{font-size:12px;color:var(--c-ink-2)}
.mega__card i{font-style:normal;color:var(--c-primary);font-weight:700}

/* 汉堡与抽屉 */
.burger{
  display:none;width:42px;height:42px;border-radius:var(--r-sm);
  border:1px solid var(--c-line-dark);align-items:center;justify-content:center;
}
.burger:hover{background:rgba(255,255,255,.08)}
.burger svg{width:20px;height:20px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(6,9,12,.55);z-index:90;
  opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(340px,88vw);
  background:var(--c-bg-deep);border-left:1px solid var(--c-line-dark);
  z-index:100;padding:22px 20px 32px;overflow-y:auto;
  transform:translateX(102%);transition:transform .24s ease;
}
.drawer.is-open{transform:translateX(0)}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer__close{
  width:38px;height:38px;border-radius:var(--r-sm);border:1px solid var(--c-line-dark);
  display:flex;align-items:center;justify-content:center;color:#fff;
}
.drawer__close:hover{background:rgba(255,255,255,.08)}
.drawer__close svg{width:18px;height:18px}
.drawer__search{display:flex;gap:8px;margin-bottom:20px}
.drawer__search input{
  flex:1;height:44px;border-radius:var(--r-sm);border:1px solid var(--c-line-dark);
  background:rgba(255,255,255,.05);padding:0 14px;color:#F2F6F4;font-size:14px;
}
.drawer__search input::placeholder{color:rgba(255,255,255,.42)}
.drawer__search input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(0,200,140,.18)}
.drawer__nav a{
  display:block;padding:14px 4px;font-size:16px;color:rgba(255,255,255,.82);
  border-bottom:1px solid var(--c-line-dark);
}
.drawer__nav a.is-active{color:var(--c-primary)}
.drawer__nav a:hover{color:var(--c-primary)}
.drawer__sub{padding:8px 4px 12px 4px;border-bottom:1px solid var(--c-line-dark)}
.drawer__sub a{display:block;font-size:14px;color:rgba(255,255,255,.58);padding:6px 0;border:0}
.drawer__cta{margin-top:24px;display:grid;gap:10px}

/* Hero */
.hero{
  position:relative;overflow:hidden;background:var(--c-bg-deep);color:#F2F6F4;
  padding:72px 0 64px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(900px 420px at 12% 0%,rgba(0,200,140,.16),transparent 62%),
    radial-gradient(700px 380px at 92% 12%,rgba(0,200,140,.08),transparent 60%),
    linear-gradient(160deg,var(--c-bg-deep) 40%,var(--c-bg-deep-2) 100%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.04;
  background-image:linear-gradient(115deg,rgba(255,255,255,.9) 1px,transparent 1px),
                   linear-gradient(115deg,rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:42px 42px,120px 120px;
}
.hero__inner{
  position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:56px;align-items:center;
}
.hero__badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid rgba(0,200,140,.4);background:rgba(0,200,140,.10);
  font-size:13px;font-weight:600;color:var(--c-primary);margin-bottom:22px;
}
.hero__badge i{width:7px;height:7px;border-radius:50%;background:var(--c-primary);font-style:normal;display:inline-block}
.hero h1{font-size:var(--fs-h1);font-weight:800;line-height:1.2;color:#F2F6F4}
.hero h1 em{font-style:normal;color:var(--c-primary)}
.hero__sub{
  margin-top:20px;font-size:17px;line-height:1.75;color:rgba(255,255,255,.72);max-width:520px;
}
.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:20px;
  margin-top:42px;padding-top:28px;border-top:1px solid var(--c-line-dark);
}
.hero__stat b{
  display:block;font-size:clamp(24px,2.4vw,34px);font-weight:800;
  color:var(--c-accent);line-height:1.1;letter-spacing:-.01em;
}
.hero__stat b span{font-size:14px;color:rgba(255,255,255,.6);font-weight:600;margin-left:4px}
.hero__stat p{font-size:13px;color:rgba(255,255,255,.6);margin-top:6px}
.hero__note{
  margin-top:32px;padding:14px 18px;border-radius:var(--r-sm);
  border:1px dashed var(--c-line-dark);font-size:13.5px;color:rgba(255,255,255,.66);
  display:flex;gap:10px;align-items:flex-start;
}
.hero__note svg{width:16px;height:16px;flex-shrink:0;margin-top:3px;color:var(--c-primary)}
.hero__media{position:relative;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:21/9;background:#16221D}
.hero__media img{width:100%;height:100%;object-fit:cover}
.hero__media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(8,12,16,.86),rgba(8,12,16,.12) 62%);
}
.hero__media-caption{
  position:absolute;left:22px;right:22px;bottom:20px;z-index:2;
}
.hero__media-caption b{display:block;font-size:16px;color:#fff;font-weight:700}
.hero__media-caption span{display:block;font-size:13px;color:rgba(255,255,255,.72);margin-top:4px}

/* 通用卡片网格 */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}

/* 入口方式卡 */
.method{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:26px 24px;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  position:relative;overflow:hidden;
}
.method::before{
  content:"";position:absolute;top:0;left:0;width:44px;height:3px;background:var(--c-primary);
}
.method:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(0,200,140,.4)}
.method__no{
  font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--c-primary-strong);
  display:inline-block;margin-bottom:14px;
}
.method h3{font-size:var(--fs-h3);margin-bottom:10px}
.method p{font-size:15px;color:var(--c-ink-2);line-height:1.7}
.method ul{margin-top:16px;display:grid;gap:8px}
.method ul li{
  font-size:14px;color:var(--c-ink-2);padding-left:18px;position:relative;
}
.method ul li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;
  border-radius:2px;background:rgba(0,200,140,.5);
}

/* 图文区块 */
.split{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:56px;align-items:center}
.split__media{border-radius:16px;overflow:hidden;aspect-ratio:16/9;background:#E8EDF1}
.split__media img{width:100%;height:100%;object-fit:cover}
.split h2{font-size:var(--fs-h2);margin-bottom:18px}
.split p{color:var(--c-ink-2);margin-bottom:14px}
.steps{margin-top:26px;display:grid;gap:16px}
.step{display:flex;gap:16px;align-items:flex-start}
.step__no{
  flex-shrink:0;width:38px;height:38px;border-radius:10px;
  background:var(--c-bg-deep);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;letter-spacing:.02em;
  clip-path:polygon(0 0,100% 0,100% 78%,78% 100%,0 100%);
}
.step b{display:block;font-size:16px;font-weight:700;margin-bottom:2px}
.step span{font-size:14px;color:var(--c-ink-2)}

/* 精选内容（1 大 2 小） */
.feature-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:20px}
.fcard{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.fcard:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(0,200,140,.35)}
.fcard__media{aspect-ratio:16/9;background:#E8EDF1;overflow:hidden}
.fcard__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.fcard:hover .fcard__media img{transform:scale(1.03)}
.fcard__body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.fcard h3{font-size:var(--fs-h3);line-height:1.45}
.fcard:hover h3{color:var(--c-primary-strong)}
.fcard p{font-size:15px;color:var(--c-ink-2);line-height:1.7}
.fcard--large{grid-column:span 6}
.fcard--large h3{font-size:clamp(20px,2vw,26px)}
.fcard--small{grid-column:span 3;background:linear-gradient(180deg,#fff 0%,#FBFDFC 100%)}
.fcard--small h3{font-size:17px}
.fcard__link{
  margin-top:auto;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--c-primary-strong);padding-top:6px;
}
.fcard__link span{transition:transform .18s ease}
.fcard:hover .fcard__link span{transform:translateX(3px)}

/* 最新信息 */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.post-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(0,200,140,.35)}
.post-card__media{display:block;aspect-ratio:16/9;background:#E8EDF1;overflow:hidden}
.post-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.post-card:hover .post-card__media img{transform:scale(1.03)}
.post-card__body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-card__title{font-size:17px;font-weight:700;line-height:1.5}
.post-card__title a:hover{color:var(--c-primary-strong)}
.post-card__desc{
  font-size:15px;color:var(--c-ink-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card__meta{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-ink-2);display:flex;align-items:center;gap:10px;
}
.empty-state{
  grid-column:1/-1;min-height:220px;border:1px dashed var(--c-line);border-radius:var(--r-md);
  background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;text-align:center;padding:32px;
}
.empty-state svg{width:44px;height:44px;color:var(--c-primary)}
.empty-state p{font-size:15px;color:var(--c-ink-2)}
.empty-state a{font-size:14px;font-weight:600;color:var(--c-primary-strong)}

/* 信任背书 */
.trust-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  border-top:1px solid var(--c-line-dark);border-bottom:1px solid var(--c-line-dark);
}
.trust-strip__item{padding:30px 24px;border-right:1px solid var(--c-line-dark)}
.trust-strip__item:last-child{border-right:0}
.trust-strip__item b{
  display:block;font-size:clamp(22px,2.2vw,30px);font-weight:800;color:#F2F6F4;line-height:1.2;
}
.trust-strip__item b span{font-size:13px;color:var(--c-primary);margin-left:6px;font-weight:600}
.trust-strip__item p{font-size:13.5px;color:rgba(255,255,255,.6);margin-top:6px}
.quote-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:44px}
.quote{
  border:1px solid var(--c-line-dark);border-radius:var(--r-md);padding:24px;
  display:flex;gap:16px;background:rgba(255,255,255,.02);
}
.quote__avatar{
  width:46px;height:46px;border-radius:50%;flex-shrink:0;
  background:linear-gradient(135deg,rgba(0,200,140,.55),rgba(0,160,200,.4));
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;color:#04231A;
}
.quote b{display:block;font-size:15px;color:#F2F6F4;margin-bottom:6px}
.quote p{font-size:14.5px;color:rgba(255,255,255,.7);line-height:1.7}
.logo-row{
  margin-top:44px;display:flex;flex-wrap:wrap;gap:14px;
}
.logo-row span{
  padding:10px 18px;border-radius:var(--r-sm);border:1px solid var(--c-line-dark);
  font-size:13px;color:rgba(255,255,255,.55);filter:grayscale(100%);
}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 24px}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item:hover{border-color:rgba(0,200,140,.35);box-shadow:var(--sh-1)}
.faq-item[open]{border-color:rgba(0,200,140,.45)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 22px 20px 24px;
  font-size:16px;font-weight:600;display:flex;align-items:center;justify-content:space-between;gap:14px;
  position:relative;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  background:var(--c-primary);border-radius:0 3px 3px 0;
  opacity:0;transition:opacity .18s ease;
}
.faq-item[open] summary::before{opacity:1}
.faq-item summary i{
  font-style:normal;flex-shrink:0;width:22px;height:22px;border-radius:50%;
  border:1px solid var(--c-line);color:var(--c-ink-2);font-size:14px;
  display:flex;align-items:center;justify-content:center;transition:transform .2s ease,background .2s ease;
}
.faq-item[open] summary i{transform:rotate(45deg);background:var(--c-primary);border-color:var(--c-primary);color:var(--c-primary-ink)}
.faq-item__body{padding:0 22px 22px 24px;font-size:15px;color:var(--c-ink-2);line-height:1.75}

/* CTA 面板 */
.cta-panel{
  background:linear-gradient(135deg,var(--c-bg-deep) 0%,var(--c-bg-deep-2) 100%);
  border-radius:var(--r-lg);padding:52px;color:#F2F6F4;
  display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;
  position:relative;overflow:hidden;
}
.cta-panel::after{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,200,140,.22),transparent 66%);pointer-events:none;
}
.cta-panel__left{position:relative;z-index:2}
.cta-panel h2{font-size:var(--fs-h2);margin-bottom:14px}
.cta-panel p{color:rgba(255,255,255,.72)}
.cta-form{position:relative;z-index:2;display:grid;gap:12px}
.cta-form__row{display:flex;gap:12px;flex-wrap:wrap}
.cta-form input{
  flex:1;min-width:200px;height:46px;border-radius:var(--r-sm);
  border:1px solid var(--c-line-dark);background:rgba(255,255,255,.06);
  padding:0 16px;color:#F2F6F4;font-size:15px;transition:border-color .18s ease,box-shadow .18s ease;
}
.cta-form input::placeholder{color:rgba(255,255,255,.42)}
.cta-form input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(0,200,140,.18)}
.cta-form input:invalid:not(:placeholder-shown){border-color:var(--c-warn);box-shadow:0 0 0 3px rgba(224,87,59,.16)}
.cta-form small{font-size:12.5px;color:rgba(255,255,255,.5)}

/* 页脚 */
.site-footer{background:var(--c-bg-deep);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer__brand .logo__text strong{font-size:17px}
.footer__brand p{font-size:14px;margin-top:16px;max-width:300px;color:rgba(255,255,255,.6)}
.footer__col h4{font-size:14px;font-weight:600;color:#F2F6F4;margin-bottom:16px}
.footer__col a{display:block;font-size:14px;color:rgba(255,255,255,.72);padding:5px 0}
.footer__col a:hover{color:var(--c-primary)}
.footer__bottom{
  margin-top:48px;border-top:1px solid var(--c-line-dark);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer__bottom a{color:rgba(255,255,255,.6)}
.footer__bottom a:hover{color:var(--c-primary)}

/* 回到顶部 */
#toTop{
  position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:50%;
  background:var(--c-primary);color:var(--c-primary-ink);z-index:70;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 24px rgba(0,200,140,.32);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s,background .2s ease;
}
#toTop.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
#toTop:hover{background:var(--c-primary-strong)}
#toTop svg{width:18px;height:18px}

/* 响应式 */
@media (min-width:1536px){
  :root{--container:1280px}
}
@media (max-width:1200px){
  .mega{width:560px}
  .logo__text small{display:none}
}
@media (max-width:1024px){
  :root{--sp-section:64px}
  .nav{display:none}
  .burger{display:flex}
  .hero__inner{grid-template-columns:minmax(0,1fr);gap:40px}
  .hero__media{aspect-ratio:16/9}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .fcard--large{grid-column:span 12}
  .fcard--small{grid-column:span 6}
  .split{grid-template-columns:minmax(0,1fr);gap:32px}
  .cta-panel{grid-template-columns:minmax(0,1fr);padding:40px 32px}
  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .trust-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .trust-strip__item:nth-child(2){border-right:0}
  .trust-strip__item:nth-child(1),
  .trust-strip__item:nth-child(2){border-bottom:1px solid var(--c-line-dark)}
  .faq-grid{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:768px){
  :root{--sp-section:48px}
  .container{padding:0 16px}
  .header__inner{height:64px;gap:16px}
  .logo__text strong{font-size:15px}
  .header__actions .btn{display:none}
  .hero{padding:48px 0 44px}
  .hero__stats{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
  .hero__sub{font-size:16px}
  .grid-3,.grid-4,.grid-2{grid-template-columns:minmax(0,1fr)}
  .post-grid{grid-template-columns:minmax(0,1fr)}
  .fcard--small{grid-column:span 12}
  .quote-grid{grid-template-columns:minmax(0,1fr)}
  .trust-strip{grid-template-columns:minmax(0,1fr)}
  .trust-strip__item{border-right:0;border-bottom:1px solid var(--c-line-dark);padding:22px 0}
  .trust-strip__item:last-child{border-bottom:0}
  .footer__grid{grid-template-columns:minmax(0,1fr)}
  .cta-panel{padding:32px 20px;border-radius:var(--r-md)}
  .section__head{margin-bottom:28px}
  .btn{width:100%}
  .hero__cta .btn{width:100%}
  .cta-form .btn{width:100%}
  .section__head .btn--text{width:auto}
}
@media (max-width:480px){
  .hero h1{font-size:26px}
  .hero__stats{grid-template-columns:minmax(0,1fr)}
  .logo__text strong{font-size:14px}
  .quote{flex-direction:column;gap:12px}
}

/* roulang page: article */
:root{
  --c-bg-deep:#0C1014;
  --c-bg-deep-2:#12211C;
  --c-surface:#FFFFFF;
  --c-surface-2:#F4F6F8;
  --c-ink:#0F1318;
  --c-ink-2:#4E5A66;
  --c-primary:#00C88C;
  --c-primary-strong:#00A874;
  --c-primary-soft:#E6FAF3;
  --c-accent:#FF7A33;
  --c-line:#E3E8EE;
  --c-line-dark:rgba(255,255,255,.10);
  --c-ok:#14A06A;
  --c-info:#2A7FE0;
  --c-warn:#E0573B;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --shadow-sm:0 1px 2px rgba(15,19,24,.06);
  --shadow-md:0 12px 32px rgba(15,19,24,.10);
  --container:1200px;
  --gap:20px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-surface);
  letter-spacing:.01em;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease;}
a:hover{color:var(--c-primary-strong);}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.25;letter-spacing:.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input{font:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:72px 0;}
.section--tight{padding:48px 0;}
.section--alt{background:var(--c-surface-2);}
.section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap;}
.section__head h2{font-size:clamp(22px,2.4vw,32px);}
.section__head p{margin-top:8px;color:var(--c-ink-2);font-size:15px;}
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary-strong);font-weight:600;font-size:15px;}
.link-more:hover{gap:10px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--c-bg-deep);
  border-bottom:1px solid var(--c-line-dark);
  transition:padding .2s ease,background-color .2s ease,box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 28px rgba(0,0,0,.28);}
.header__inner{display:flex;align-items:center;gap:28px;height:72px;transition:height .2s ease;}
.site-header.is-scrolled .header__inner{height:62px;}
.logo{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.logo__mark{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(135deg,var(--c-primary) 0%,var(--c-primary-strong) 100%);
  display:flex;align-items:center;justify-content:center;
  color:#06231A;font-weight:800;font-size:18px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.45);
}
.logo__text{display:flex;flex-direction:column;line-height:1.15;}
.logo__text strong{color:#F2F6F4;font-size:17px;font-weight:800;letter-spacing:.02em;}
.logo__text small{color:rgba(255,255,255,.55);font-size:12px;letter-spacing:.06em;}
.nav{margin-left:auto;}
.nav__list{display:flex;align-items:center;gap:6px;}
.nav__item{position:relative;}
.nav__link{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 14px;border-radius:var(--r-sm);
  color:rgba(255,255,255,.80);font-size:15px;font-weight:500;
  transition:background-color .18s ease,color .18s ease;
}
.nav__link:hover{color:#fff;background:rgba(255,255,255,.08);}
.nav__link.is-active{color:#06231A;background:var(--c-primary);font-weight:700;}
.nav__caret{width:12px;height:12px;transition:transform .18s ease;}
.nav__item--has-mega:hover .nav__caret,
.nav__item--has-mega:focus-within .nav__caret{transform:rotate(180deg);}
.header__cta{flex:0 0 auto;}
.mega{
  position:absolute;top:calc(100% + 12px);left:50%;transform:translate(-50%,8px);
  width:660px;padding:22px;
  display:grid;grid-template-columns:1fr 1fr 1fr;gap:20px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-md);
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .16s ease,transform .16s ease,visibility .16s;
  z-index:70;
}
.nav__item--has-mega:hover .mega,
.nav__item--has-mega:focus-within .mega{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0);}
.mega__title{margin:0 0 10px;font-size:13px;font-weight:700;color:var(--c-ink-2);letter-spacing:.08em;}
.mega__link{display:block;padding:9px 10px;border-radius:var(--r-sm);font-size:14px;font-weight:600;color:var(--c-ink);}
.mega__link small{display:block;font-weight:400;font-size:12.5px;color:var(--c-ink-2);margin-top:2px;}
.mega__link:hover{background:var(--c-surface-2);color:var(--c-primary-strong);}
.mega__card{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 14px;border:1px solid var(--c-line);border-radius:var(--r-md);
  margin-bottom:10px;background:var(--c-surface);
}
.mega__card b{display:block;font-size:14px;}
.mega__card span span{font-size:12.5px;color:var(--c-ink-2);}
.mega__card i{font-style:normal;color:var(--c-primary);font-size:16px;}
.mega__card:hover{border-color:var(--c-primary);background:var(--c-primary-soft);color:var(--c-ink);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-sm);
  align-items:center;justify-content:center;color:#F2F6F4;
  border:1px solid var(--c-line-dark);margin-left:auto;
}
.nav-toggle:hover{background:rgba(255,255,255,.08);}
.drawer{
  position:fixed;inset:0 0 0 auto;width:min(340px,88vw);
  background:var(--c-bg-deep);border-left:1px solid var(--c-line-dark);
  transform:translateX(100%);transition:transform .24s ease;
  z-index:90;padding:24px 20px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer__close{width:38px;height:38px;border-radius:var(--r-sm);border:1px solid var(--c-line-dark);color:#F2F6F4;display:flex;align-items:center;justify-content:center;}
.drawer a.drawer__link{display:block;padding:13px 4px;color:rgba(255,255,255,.86);font-size:16px;border-bottom:1px solid var(--c-line-dark);}
.drawer a.drawer__link:hover{color:var(--c-primary);}
.drawer__actions{margin-top:22px;}
.overlay{position:fixed;inset:0;background:rgba(6,10,13,.6);opacity:0;visibility:hidden;transition:.2s;z-index:80;}
.overlay.is-open{opacity:1;visibility:visible;}

/* ---------- buttons / badges ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:700;white-space:nowrap;
  transition:transform .16s ease,background-color .16s ease,box-shadow .16s ease,color .16s ease,border-color .16s ease;
}
.btn--primary{background:var(--c-primary);color:#06231A;box-shadow:0 6px 18px rgba(0,200,140,.22);}
.btn--primary:hover{background:var(--c-primary-strong);color:#04170F;transform:translateY(-1px);box-shadow:0 12px 26px rgba(0,200,140,.28);}
.btn--primary:active{transform:translateY(0);}
.btn--accent{background:var(--c-accent);color:#2A1206;}
.btn--accent:hover{background:#F26A22;color:#2A1206;transform:translateY(-1px);}
.btn--ghost{border:1px solid rgba(255,255,255,.30);color:#F2F6F4;}
.btn--ghost:hover{background:rgba(255,255,255,.08);color:#fff;}
.btn--outline{border:1px solid var(--c-line);color:var(--c-ink);background:var(--c-surface);}
.btn--outline:hover{border-color:var(--c-primary);color:var(--c-primary-strong);}
.btn--text{color:var(--c-primary-strong);padding:0;height:auto;font-weight:600;}
.btn--text i{font-style:normal;transition:transform .16s ease;}
.btn--text:hover i{transform:translateX(3px);}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:6px;font-size:12.5px;font-weight:700;
  background:var(--c-primary-soft);color:#046C4C;
}
.badge--dark{background:rgba(0,200,140,.16);color:#5CF0C0;border:1px solid rgba(0,200,140,.30);}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid var(--c-line);background:var(--c-surface);font-size:13.5px;color:var(--c-ink-2);
}
.tag:hover{border-color:var(--c-primary);color:var(--c-primary-strong);background:var(--c-primary-soft);}

/* ---------- page hero ---------- */
.page-hero{position:relative;background:var(--c-bg-deep);overflow:hidden;}
.page-hero__bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.34;}
.page-hero__mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(12,16,20,.72) 0%,rgba(12,16,20,.90) 60%,rgba(12,16,20,.97) 100%);}
.page-hero__inner{position:relative;padding:64px 24px 56px;max-width:var(--container);margin:0 auto;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.55);margin-bottom:20px;}
.breadcrumb a{color:rgba(255,255,255,.72);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:rgba(255,255,255,.30);}
.breadcrumb .current{color:rgba(255,255,255,.55);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.page-hero h1{
  color:#F2F6F4;font-size:clamp(26px,3.4vw,40px);font-weight:800;
  max-width:900px;margin:16px 0 18px;line-height:1.25;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:rgba(255,255,255,.62);}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.30);}
.meta-row b{color:rgba(255,255,255,.86);font-weight:600;}

/* ---------- article layout ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 280px;
  gap:44px;align-items:start;padding:56px 0 24px;
}
.article-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:40px clamp(20px,3vw,48px);box-shadow:var(--shadow-sm);
}
.article__body{max-width:760px;margin:0 auto;color:var(--c-ink-2);font-size:16px;line-height:1.85;}
.article__body>p{margin:0 0 1.2em;}
.article__body h2{
  margin:40px 0 16px;font-size:clamp(20px,2.2vw,27px);color:var(--c-ink);
  padding-left:14px;position:relative;
}
.article__body h2::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:3px;background:var(--c-primary);}
.article__body h3{margin:28px 0 12px;font-size:20px;color:var(--c-ink);}
.article__body h4{margin:22px 0 10px;font-size:17px;color:var(--c-ink);}
.article__body a{color:var(--c-primary-strong);text-decoration:underline;text-underline-offset:3px;}
.article__body ul,.article__body ol{margin:0 0 1.2em;padding-left:4px;}
.article__body ul li,.article__body ol li{position:relative;padding-left:24px;margin-bottom:9px;}
.article__body ul li::before{content:"";position:absolute;left:4px;top:.68em;width:8px;height:8px;border-radius:2px;background:var(--c-primary);}
.article__body ol{counter-reset:olc;}
.article__body ol li{counter-increment:olc;}
.article__body ol li::before{
  content:counter(olc,decimal-leading-zero);
  position:absolute;left:0;top:.1em;font-size:14px;font-weight:800;color:var(--c-primary);
}
.article__body blockquote{
  margin:24px 0;padding:16px 20px;border-left:3px solid var(--c-primary);
  background:var(--c-surface-2);border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--c-ink-2);
}
.article__body img{border-radius:12px;margin:24px auto;box-shadow:var(--shadow-sm);}
.article__body figure{margin:24px 0;}
.article__body figcaption{text-align:center;font-size:13px;color:var(--c-ink-2);margin-top:8px;}
.article__body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
  border:1px solid var(--c-line);border-radius:var(--r-sm);overflow:hidden;
}
.article__body thead th{background:var(--c-surface-2);font-weight:700;color:var(--c-ink);}
.article__body th,.article__body td{border:1px solid var(--c-line);padding:10px 14px;text-align:left;}
.article__body pre{
  margin:24px 0;padding:18px 20px;background:var(--c-bg-deep);color:#D6F5EA;
  border-radius:var(--r-sm);overflow-x:auto;font-size:14px;line-height:1.7;
  font-family:"JetBrains Mono",Consolas,Monaco,"Courier New",monospace;
}
.article__body code{
  background:var(--c-surface-2);border:1px solid var(--c-line);border-radius:6px;
  padding:1px 6px;font-size:14px;color:#0B6B4E;
  font-family:"JetBrains Mono",Consolas,Monaco,"Courier New",monospace;
}
.article__body pre code{background:none;border:0;padding:0;color:inherit;}
.article__body hr{border:0;border-top:1px dashed var(--c-line);margin:34px 0;}
.article__body strong{color:var(--c-ink);}
.empty-state{
  text-align:center;padding:56px 20px;border:1px dashed var(--c-line);
  border-radius:var(--r-md);background:var(--c-surface-2);
}
.empty-state h2{font-size:22px;margin-bottom:10px;color:var(--c-ink);}
.empty-state p{color:var(--c-ink-2);margin-bottom:20px;}

/* ---------- sidebar ---------- */
.side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side__card{border:1px solid var(--c-line);border-radius:var(--r-md);padding:20px;background:var(--c-surface);}
.side__card h3{font-size:16px;margin-bottom:14px;color:var(--c-ink);}
.side__card p{font-size:14px;color:var(--c-ink-2);}
.entry-link{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 14px;border-radius:var(--r-sm);border:1px solid var(--c-line);
  margin-bottom:10px;font-size:14px;font-weight:600;color:var(--c-ink);
}
.entry-link:last-child{margin-bottom:0;}
.entry-link span small{display:block;font-weight:400;font-size:12.5px;color:var(--c-ink-2);margin-top:2px;}
.entry-link i{font-style:normal;color:var(--c-primary);}
.entry-link:hover{border-color:var(--c-primary);background:var(--c-primary-soft);color:var(--c-ink);}
.side__dark{background:var(--c-bg-deep);border-color:var(--c-line-dark);color:rgba(255,255,255,.72);}
.side__dark h3{color:#F2F6F4;}
.side__dark p{color:rgba(255,255,255,.72);}
.side__dark .btn{margin-top:16px;width:100%;}

/* ---------- article footer blocks ---------- */
.article-foot{max-width:760px;margin:0 auto;padding-top:32px;}
.tag-group{display:flex;flex-wrap:wrap;gap:10px;padding:24px 0;border-top:1px dashed var(--c-line);}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:8px;}
.pager a{
  border:1px solid var(--c-line);border-radius:var(--r-md);padding:18px 20px;
  display:block;transition:border-color .18s ease,transform .18s ease;
}
.pager a:hover{border-color:var(--c-primary);transform:translateY(-2px);}
.pager span{font-size:12.5px;color:var(--c-ink-2);letter-spacing:.06em;}
.pager b{display:block;margin-top:6px;font-size:15.5px;color:var(--c-ink);}
.pager a:hover b{color:var(--c-primary-strong);}
.pager .pager__next{text-align:right;}
.back-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}

.related-list{display:grid;gap:14px;grid-template-columns:repeat(3,minmax(0,1fr));}
.related-item{
  display:flex;gap:14px;align-items:center;
  border:1px solid var(--c-line);border-radius:var(--r-md);padding:12px;
  background:var(--c-surface);transition:border-color .18s ease,transform .18s ease;
}
.related-item:hover{border-color:var(--c-primary);transform:translateY(-2px);}
.related-item__media{flex:0 0 96px;width:96px;aspect-ratio:16/10;border-radius:var(--r-sm);overflow:hidden;background:var(--c-surface-2);}
.related-item__media img{width:100%;height:100%;object-fit:cover;}
.related-item__body b{display:block;font-size:14.5px;line-height:1.5;color:var(--c-ink);}
.related-item__body span{display:block;margin-top:6px;font-size:12.5px;color:var(--c-ink-2);}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.faq-item{border:1px solid var(--c-line);border-radius:var(--r-md);background:var(--c-surface);overflow:hidden;}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:18px 20px 18px 22px;font-size:16px;font-weight:700;color:var(--c-ink);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:3px;
  background:transparent;transition:background-color .18s ease;
}
.faq-item summary::after{
  content:"+";font-size:20px;font-weight:700;color:var(--c-primary);flex:0 0 auto;
  transition:transform .2s ease;
}
.faq-item[open] summary::before{background:var(--c-primary);}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item summary:hover{background:var(--c-surface-2);}
.faq-item p{padding:0 20px 20px 22px;font-size:14.5px;color:var(--c-ink-2);}

/* ---------- CTA ---------- */
.cta-band{
  border-radius:var(--r-lg);background:var(--c-bg-deep);color:rgba(255,255,255,.72);
  padding:44px clamp(22px,3.4vw,48px);
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,420px);gap:32px;align-items:center;
  border:1px solid var(--c-line-dark);
  background-image:radial-gradient(700px 320px at 12% 0%,rgba(0,200,140,.18),transparent 70%);
}
.cta-band h2{color:#F2F6F4;font-size:clamp(22px,2.6vw,30px);margin-bottom:12px;}
.cta-band p{font-size:15px;max-width:520px;}
.subscribe{display:flex;gap:12px;flex-wrap:wrap;}
.subscribe label{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);}
.subscribe input{
  flex:1 1 220px;height:48px;padding:0 16px;border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.06);color:#F2F6F4;
  transition:border-color .18s ease,background-color .18s ease;
}
.subscribe input::placeholder{color:rgba(255,255,255,.42);}
.subscribe input:focus{outline:none;border-color:var(--c-primary);background:rgba(255,255,255,.10);}
.subscribe .btn{flex:0 0 auto;}
.form-note{margin-top:12px;font-size:12.5px;color:rgba(255,255,255,.48);}

/* ---------- footer ---------- */
.site-footer{background:var(--c-bg-deep);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:72px;border-top:1px solid var(--c-line-dark);}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding-bottom:44px;}
.footer__brand .logo__text strong{font-size:18px;}
.footer__brand p{margin-top:16px;font-size:14px;max-width:320px;color:rgba(255,255,255,.62);}
.footer__col h4{font-size:14px;font-weight:600;color:#F2F6F4;margin-bottom:16px;}
.footer__col a{display:block;font-size:14px;color:rgba(255,255,255,.72);padding:6px 0;}
.footer__col a:hover{color:var(--c-primary);}
.footer__bottom{
  border-top:1px solid var(--c-line-dark);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.52);
}
.footer__bottom a{color:rgba(255,255,255,.72);}
.footer__bottom a:hover{color:var(--c-primary);}

/* ---------- to top ---------- */
.to-top{
  position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:14px;
  background:var(--c-primary);color:#06231A;display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 26px rgba(0,200,140,.30);
  opacity:0;visibility:hidden;transform:translateY(10px);transition:.22s;z-index:50;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--c-primary-strong);}

@media (max-width:1280px){
  .footer__grid{grid-template-columns:1.4fr 1fr 1fr;}
  .footer__col:last-child{grid-column:span 3;}
}
@media (max-width:1024px){
  .nav{display:none;}
  .header__cta{display:none;}
  .nav-toggle{display:flex;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px;}
  .side{position:static;}
  .related-list{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;}
  .cta-band{grid-template-columns:1fr;}
  .mega{display:none;}
}
@media (max-width:768px){
  .section{padding:48px 0;}
  .container{padding:0 16px;}
  .page-hero__inner{padding:44px 16px 40px;}
  .article-card{padding:26px 18px;border-radius:var(--r-md);}
  .article__body{font-size:15.5px;}
  .article__body h2{margin-top:32px;}
  .article__body table{display:block;overflow-x:auto;white-space:nowrap;}
  .pager{grid-template-columns:1fr;}
  .pager .pager__next{text-align:left;}
  .footer__grid{grid-template-columns:1fr 1fr;gap:26px;}
  .footer__col:last-child{grid-column:span 2;}
}
@media (max-width:520px){
  .logo__text strong{font-size:15px;}
  .logo__text small{display:none;}
  .article-layout{padding:32px 0 12px;}
  .footer__grid{grid-template-columns:1fr;}
  .footer__col:last-child{grid-column:span 1;}
  .related-item{flex-direction:column;align-items:stretch;}
  .related-item__media{width:100%;flex:0 0 auto;aspect-ratio:16/9;}
}

/* roulang page: category1 */
/* ============ 设计令牌 ============ */
:root{
  --c-bg-deep:#0C1014;
  --c-bg-deep-2:#12211C;
  --c-surface:#FFFFFF;
  --c-surface-2:#F4F6F8;
  --c-ink:#0F1318;
  --c-ink-2:#4E5A66;
  --c-ink-3:#7A8794;
  --c-primary:#00C88C;
  --c-primary-strong:#00A874;
  --c-primary-soft:#E6F9F2;
  --c-accent:#FF7A33;
  --c-line:#E3E8EE;
  --c-line-dark:rgba(255,255,255,.10);
  --c-ok:#14A06A;
  --c-info:#2A7FE0;
  --c-warn:#E0573B;
  --r-s:10px;
  --r-m:14px;
  --r-l:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,19,24,.06);
  --sh-2:0 12px 32px rgba(15,19,24,.10);
  --container:1200px;
  --gap:24px;
  --font:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}

/* ============ Reset / Base ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-surface);
  letter-spacing:.01em;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .18s ease,opacity .18s ease}
a:hover{color:var(--c-primary-strong)}
button,input{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:800;letter-spacing:.005em}
p{margin:0}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
::selection{background:var(--c-primary);color:#04231A}

/* ============ 布局容器 ============ */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section--tight{padding:64px 0}
.section--alt{background:var(--c-surface-2)}
.section__head{max-width:760px;margin-bottom:40px}
.section__head--center{margin-left:auto;margin-right:auto;text-align:center}
.section__head h2{font-size:clamp(24px,3vw,34px);font-weight:700}
.section__head p{margin-top:14px;color:var(--c-ink-2);font-size:16px}
.section__more{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:600;font-size:15px}
.section__more:hover{gap:10px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-s);
  font-size:15px;font-weight:600;line-height:1;
  transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn--sm{height:40px;padding:0 18px;font-size:14px}
.btn--block{width:100%}
.btn--primary{background:var(--c-primary);color:#04231A;box-shadow:0 6px 18px rgba(0,200,140,.22)}
.btn--primary:hover{background:var(--c-primary-strong);color:#032018;transform:translateY(-1px);box-shadow:0 10px 26px rgba(0,200,140,.28)}
.btn--primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(0,200,140,.20)}
.btn--accent{background:var(--c-accent);color:#2A1104;box-shadow:0 6px 18px rgba(255,122,51,.24)}
.btn--accent:hover{background:#F26A1F;color:#2A1104;transform:translateY(-1px)}
.btn--outline{border:1px solid var(--c-line);background:#fff;color:var(--c-ink)}
.btn--outline:hover{border-color:var(--c-primary);color:var(--c-primary-strong);background:var(--c-primary-soft)}
.btn--ghost-dark{border:1px solid rgba(255,255,255,.30);background:transparent;color:#F2F6F4}
.btn--ghost-dark:hover{background:rgba(255,255,255,.08);color:#fff}
.btn--text{padding:0;height:auto;color:var(--c-primary);font-weight:600}
.btn--text i{font-style:normal;transition:transform .18s ease}
.btn--text:hover i{transform:translateX(3px)}

/* ============ 标签 / 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 10px;border-radius:6px;
  background:var(--c-primary-soft);color:var(--c-primary-strong);
  font-size:13px;font-weight:600;line-height:1.4;
}
.badge--dark{background:rgba(0,200,140,.14);color:#57E6B6}
.badge--muted{background:#EEF1F4;color:var(--c-ink-2)}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(12,16,20,.96);
  border-bottom:1px solid var(--c-line-dark);
  transition:background .2s ease,box-shadow .2s ease,backdrop-filter .2s ease;
}
.site-header.is-scrolled{background:rgba(9,12,15,.99);box-shadow:0 10px 30px rgba(0,0,0,.30)}
.header__inner{display:flex;align-items:center;gap:20px;min-height:74px;transition:min-height .2s ease}
.site-header.is-scrolled .header__inner{min-height:62px}

.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo__mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(140deg,var(--c-primary) 0%,#0B8C63 100%);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.35);
}
.logo__mark svg{width:22px;height:22px}
.logo__text{display:flex;flex-direction:column;line-height:1.15}
.logo__text strong{color:#F2F6F4;font-size:16px;font-weight:800;letter-spacing:.01em}
.logo__text small{color:rgba(255,255,255,.55);font-size:11.5px;letter-spacing:.06em}

.nav{margin-left:auto}
.nav__list{display:flex;align-items:center;gap:6px}
.nav__item{position:relative}
.nav__link{
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 14px;border-radius:var(--r-s);
  color:rgba(255,255,255,.82);font-size:15px;font-weight:500;
  transition:background .18s ease,color .18s ease;
}
.nav__link:hover{background:rgba(255,255,255,.07);color:#fff}
.nav__link.is-active{color:#7CF0C6;background:rgba(0,200,140,.12)}
.nav__caret{width:12px;height:12px;opacity:.7}
.nav__item--has-mega::after{content:"";position:absolute;left:0;right:0;top:100%;height:18px}

.mega{
  position:absolute;top:calc(100% + 14px);left:50%;
  width:660px;max-width:calc(100vw - 48px);
  transform:translate(-50%,8px);
  background:#0E1519;border:1px solid var(--c-line-dark);border-radius:var(--r-l);
  padding:22px;display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
  opacity:0;visibility:hidden;z-index:70;
  box-shadow:0 24px 60px rgba(0,0,0,.45);
  transition:opacity .16s ease,transform .16s ease,visibility .16s ease;
}
.nav__item--has-mega:hover .mega,
.nav__item--has-mega:focus-within .mega{opacity:1;visibility:visible;transform:translate(-50%,0)}
.mega__title{margin-bottom:12px;font-size:12px;font-weight:700;letter-spacing:.14em;color:rgba(255,255,255,.42);text-transform:uppercase}
.mega__link{
  display:flex;flex-direction:column;gap:3px;
  padding:9px 10px;border-radius:var(--r-s);
  color:#EAF1EE;font-size:14px;font-weight:600;
  transition:background .16s ease,color .16s ease;
}
.mega__link small{color:rgba(255,255,255,.50);font-size:12.5px;font-weight:400}
.mega__link:hover{background:rgba(0,200,140,.10);color:var(--c-primary)}
.mega__card{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 14px;margin-bottom:10px;
  border:1px solid var(--c-line-dark);border-radius:var(--r-s);
  background:rgba(255,255,255,.03);
  color:#EAF1EE;transition:border-color .18s ease,background .18s ease,transform .18s ease;
}
.mega__card span{display:flex;flex-direction:column;gap:2px}
.mega__card b{font-size:14px;font-weight:700}
.mega__card span span{color:rgba(255,255,255,.50);font-size:12.5px;font-weight:400}
.mega__card i{font-style:normal;color:var(--c-primary);transition:transform .18s ease}
.mega__card:hover{border-color:rgba(0,200,140,.45);background:rgba(0,200,140,.08);transform:translateY(-1px)}
.mega__card:hover i{transform:translateX(3px)}

.header__actions{display:flex;align-items:center;gap:10px;margin-left:8px}
.burger{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:var(--r-s);
  border:1px solid var(--c-line-dark);color:#EAF1EE;
}
.burger:hover{background:rgba(255,255,255,.08)}
.nav-mask{position:fixed;inset:0;background:rgba(6,9,12,.62);z-index:80;border:0}
.nav__cta{display:none}

/* ============ 页面头 ============ */
.page-head{
  position:relative;
  padding:44px 0 56px;
  background:
    radial-gradient(900px 380px at 88% -10%,rgba(0,200,140,.10),transparent 62%),
    linear-gradient(180deg,#F7FAF9 0%,#FFFFFF 100%);
  border-bottom:1px solid var(--c-line);
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-3);margin-bottom:22px;flex-wrap:wrap}
.breadcrumb a:hover{color:var(--c-primary-strong)}
.breadcrumb__current{color:var(--c-ink-2)}
.page-head__grid{display:grid;grid-template-columns:1.6fr 1fr;gap:40px;align-items:start}
.page-head h1{margin:14px 0 0;font-size:clamp(27px,3.6vw,40px);font-weight:800;line-height:1.22;letter-spacing:-.005em}
.page-head__lead{margin-top:18px;max-width:640px;color:var(--c-ink-2);font-size:16.5px;line-height:1.8}
.page-head__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

.quick-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-l);
  padding:22px;box-shadow:var(--sh-1);
}
.quick-card h2{font-size:16px;font-weight:700;margin-bottom:14px}
.quick-card li{
  display:flex;align-items:flex-start;gap:10px;
  padding:11px 0;border-top:1px dashed var(--c-line);
  font-size:14.5px;color:var(--c-ink-2);
}
.quick-card li:first-child{border-top:0}
.quick-card li b{color:var(--c-ink);font-weight:600}
.dot{width:7px;height:7px;border-radius:2px;background:var(--c-primary);margin-top:9px;flex-shrink:0}

.stat-bar{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
  margin-top:44px;padding-top:28px;border-top:1px solid var(--c-line);
}
.stat__num{font-size:clamp(24px,3vw,32px);font-weight:800;color:var(--c-accent);line-height:1.1}
.stat__num span{font-size:14px;font-weight:600;color:var(--c-ink-2);margin-left:4px}
.stat__label{margin-top:6px;font-size:13.5px;color:var(--c-ink-3)}

/* ============ 筛选胶囊 ============ */
.filter-bar{
  display:flex;gap:10px;overflow-x:auto;padding:4px 0 10px;
  scrollbar-width:none;-ms-overflow-style:none;
}
.filter-bar::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:6px;
  height:38px;padding:0 16px;border-radius:var(--r-pill);
  border:1px solid var(--c-line);background:#fff;
  font-size:14px;color:var(--c-ink-2);font-weight:500;
  transition:all .18s ease;
}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary-strong);background:var(--c-primary-soft)}
.chip.is-active{background:var(--c-ink);border-color:var(--c-ink);color:#fff}

/* ============ 卡片网格 ============ */
.card-grid{
  display:grid;gap:20px;
  grid-template-columns:repeat(auto-fill,minmax(300px,1fr));
}
.card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-m);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D7DEE6}
.card__media{
  position:relative;aspect-ratio:16/9;background:#E9EEF2;
  overflow:hidden;
}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card:hover .card__media img{transform:scale(1.03)}
.card__body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;gap:10px}
.card__title{font-size:17px;font-weight:700;line-height:1.5}
.card:hover .card__title{color:var(--c-primary-strong)}
.card__desc{
  font-size:15px;line-height:1.7;color:var(--c-ink-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card__meta{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--c-ink-3);
}
.card__meta i{font-style:normal;color:var(--c-primary);transition:transform .18s ease}
.card:hover .card__meta i{transform:translateX(4px)}

/* ============ 分页 ============ */
.pager{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:44px;flex-wrap:wrap}
.pager__item{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:42px;height:42px;padding:0 14px;border-radius:var(--r-s);
  border:1px solid var(--c-line);background:#fff;color:var(--c-ink-2);
  font-size:14px;font-weight:600;transition:all .18s ease;
}
.pager__item:hover{border-color:var(--c-primary);color:var(--c-primary-strong);background:var(--c-primary-soft)}
.pager__item.is-current{background:var(--c-primary);border-color:var(--c-primary);color:#04231A}

/* ============ 步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.step{
  position:relative;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-m);padding:22px 18px;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease;
}
.step:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.step__no{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:8px;
  background:var(--c-bg-deep);color:#7CF0C6;font-size:14px;font-weight:800;
  clip-path:polygon(0 0,100% 0,100% 74%,74% 100%,0 100%);
}
.step h3{margin-top:14px;font-size:17px;font-weight:700}
.step p{margin-top:8px;font-size:14.5px;color:var(--c-ink-2);line-height:1.7}

/* ============ 深色场景带 ============ */
.band{
  position:relative;color:#F2F6F4;overflow:hidden;
  background:var(--c-bg-deep);
}
.band::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  opacity:.28;
}
.band::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(140deg,rgba(12,16,20,.94) 0%,rgba(18,33,28,.88) 100%);
}
.band__inner{position:relative;z-index:2;padding:80px 0}
.band h2{font-size:clamp(23px,3vw,32px);font-weight:700;color:#F2F6F4;max-width:620px}
.band__lead{margin-top:16px;max-width:600px;color:rgba(255,255,255,.72);font-size:16px}
.band__points{
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:38px;
}
.point{
  padding:20px 18px;border-radius:var(--r-m);
  border:1px solid var(--c-line-dark);background:rgba(255,255,255,.03);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.point:hover{background:rgba(0,200,140,.08);border-color:rgba(0,200,140,.32);transform:translateY(-2px)}
.point h3{font-size:16px;font-weight:700;color:#F2F6F4}
.point p{margin-top:8px;font-size:14px;color:rgba(255,255,255,.66);line-height:1.7}

/* ============ 图文检查清单 ============ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split__media{border-radius:var(--r-m);overflow:hidden;background:#E9EEF2;box-shadow:var(--sh-1)}
.split__media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.split h2{font-size:clamp(23px,3vw,32px);font-weight:700}
.num-list{margin-top:26px;display:flex;flex-direction:column;gap:18px}
.num-list li{display:flex;gap:14px}
.num-list .n{
  flex-shrink:0;width:30px;height:30px;border-radius:8px;
  background:var(--c-primary-soft);color:var(--c-primary-strong);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;
}
.num-list b{display:block;font-size:16px;font-weight:700}
.num-list p{margin-top:4px;font-size:14.5px;color:var(--c-ink-2);line-height:1.7}

/* ============ FAQ ============ */
.faq{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}
.faq__item{
  position:relative;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-m);overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq__item:hover{border-color:#D7DEE6;box-shadow:var(--sh-1)}
.faq__item[open]{box-shadow:var(--sh-1)}
.faq__item[open]::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--c-primary)}
.faq__item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:18px 52px 18px 22px;
  font-size:16px;font-weight:600;color:var(--c-ink);
  transition:background .18s ease,color .18s ease;
}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary:hover{background:var(--c-surface-2)}
.faq__item[open] summary{color:var(--c-primary-strong)}
.faq__item summary::after{
  content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:500;color:var(--c-ink-3);line-height:1;
}
.faq__item[open] summary::after{content:"–";color:var(--c-primary)}
.faq__item p{
  padding:0 22px 20px;font-size:15px;color:var(--c-ink-2);line-height:1.75;
}

/* ============ 相关分类 ============ */
.related-cats{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px 16px;
  padding:22px 24px;border-radius:var(--r-m);
  background:var(--c-surface-2);border:1px solid var(--c-line);
  font-size:14.5px;
}
.related-cats strong{font-size:14px;color:var(--c-ink-3);font-weight:600}
.related-cats a{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--c-line);color:var(--c-ink-2);
  transition:all .18s ease;
}
.related-cats a:hover{border-color:var(--c-primary);color:var(--c-primary-strong);background:var(--c-primary-soft)}

/* ============ CTA 面板 ============ */
.cta{
  display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;
  padding:44px;border-radius:var(--r-l);
  background:linear-gradient(135deg,#0C1014 0%,#12211C 100%);
  color:#F2F6F4;border:1px solid rgba(255,255,255,.08);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.07);
}
.cta h2{font-size:clamp(22px,2.8vw,30px);font-weight:700;color:#F2F6F4}
.cta p{margin-top:14px;color:rgba(255,255,255,.70);font-size:15.5px;max-width:520px}
.cta__actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.subscribe{display:flex;flex-direction:column;gap:12px}
.subscribe label{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.field{display:flex;gap:10px}
.field input{
  flex:1;height:46px;padding:0 16px;border-radius:var(--r-s);
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.05);
  color:#fff;font-size:15px;transition:border-color .18s ease,background .18s ease;
}
.field input::placeholder{color:rgba(255,255,255,.45)}
.field input:focus{outline:none;border-color:var(--c-primary);background:rgba(0,200,140,.08)}
.privacy{font-size:12.5px;color:rgba(255,255,255,.48)}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-bg-deep);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0}
.footer__grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;
  padding-bottom:44px;border-bottom:1px solid var(--c-line-dark);
}
.footer__brand .logo__text strong{font-size:17px;color:#F2F6F4}
.footer__brand .logo__text small{color:rgba(255,255,255,.45)}
.footer__brand p{margin-top:16px;font-size:14.5px;line-height:1.8;max-width:340px;color:rgba(255,255,255,.62)}
.footer__col h4{margin-bottom:14px;font-size:14px;font-weight:600;color:#EAF1EE}
.footer__col a{display:block;padding:6px 0;font-size:14px;color:rgba(255,255,255,.72)}
.footer__col a:hover{color:var(--c-primary)}
.footer__bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 0 28px;font-size:13px;color:rgba(255,255,255,.50);
}
.footer__bottom a{color:rgba(255,255,255,.72)}
.footer__bottom a:hover{color:var(--c-primary)}

/* ============ 回到顶部 ============ */
.to-top{
  position:fixed;right:22px;bottom:22px;z-index:70;
  width:46px;height:46px;border-radius:50%;
  background:var(--c-primary);color:#04231A;
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 10px 26px rgba(0,200,140,.32);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--c-primary-strong);color:#032018}

/* ============ 断点 ============ */
@media (max-width:1280px){
  .container{padding:0 22px}
}
@media (max-width:1024px){
  .section{padding:64px 0}
  .page-head__grid{grid-template-columns:1fr;gap:28px}
  .steps{grid-template-columns:repeat(3,1fr)}
  .band__points{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:28px}
  .cta{grid-template-columns:1fr;padding:32px}
  .footer__grid{grid-template-columns:1fr 1fr;gap:28px}
  .mega{left:auto;right:0;transform:translateY(8px);width:min(560px,calc(100vw - 40px))}
  .nav__item--has-mega:hover .mega,
  .nav__item--has-mega:focus-within .mega{transform:translateY(0)}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .section{padding:48px 0}
  .header__inner{min-height:64px}
  .site-header.is-scrolled .header__inner{min-height:64px}
  .logo__text strong{font-size:15px}
  .logo__text small{display:none}
  .burger{display:inline-flex}
  .header__actions .btn{display:none}
  .nav{
    position:fixed;top:0;right:0;bottom:0;width:min(86vw,352px);
    margin-left:0;background:#0C1014;border-left:1px solid var(--c-line-dark);
    padding:82px 18px 32px;overflow-y:auto;z-index:90;
    transform:translateX(102%);transition:transform .24s ease;
  }
  .site-header.is-open .nav{transform:translateX(0)}
  .nav__list{flex-direction:column;align-items:stretch;gap:4px}
  .nav__link{justify-content:space-between;padding:14px 12px;font-size:16px}
  .mega{
    position:static;opacity:1;visibility:visible;transform:none;
    width:auto;max-width:none;background:transparent;border:0;padding:6px 0 12px;
    grid-template-columns:1fr;gap:12px;box-shadow:none;
  }
  .nav__item--has-mega::after{display:none}
  .mega__card{background:rgba(255,255,255,.04)}
  .nav__cta{display:flex;flex-direction:column;gap:10px;margin-top:20px;padding-top:20px;border-top:1px solid var(--c-line-dark)}
  .nav__cta p{font-size:13px;color:rgba(255,255,255,.5)}
  .nav-mask[hidden]{display:none}
  .page-head{padding:30px 0 40px}
  .stat-bar{grid-template-columns:1fr 1fr;gap:16px;margin-top:32px}
  .steps{grid-template-columns:1fr;gap:14px}
  .faq{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr;gap:26px}
  .footer__bottom{flex-direction:column;align-items:flex-start}
  .card-grid{grid-template-columns:1fr}
  .section__head{margin-bottom:28px}
}
@media (max-width:520px){
  .band__points{grid-template-columns:1fr}
  .cta{padding:24px 20px}
  .field{flex-direction:column}
  .field .btn{width:100%}
  .page-head h1{font-size:24px}
  .stat-bar{grid-template-columns:1fr}
}

/* roulang page: category2 */
:root{
  --c-bg-deep:#0C1014;
  --c-bg-deep-2:#12211C;
  --c-surface:#FFFFFF;
  --c-surface-2:#F4F6F8;
  --c-ink:#0F1318;
  --c-ink-2:#4E5A66;
  --c-primary:#00C88C;
  --c-primary-strong:#00A874;
  --c-primary-ink:#04231A;
  --c-accent:#FF7A33;
  --c-line:#E3E8EE;
  --c-line-dark:rgba(255,255,255,.10);
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,19,24,.06);
  --sh-2:0 12px 32px rgba(15,19,24,.10);
  --container:1200px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.02em;
  color:var(--c-ink-2);
  background:var(--c-surface);
}
h1,h2,h3,h4{color:var(--c-ink);margin:0;font-weight:700;line-height:1.28}
h1{font-size:clamp(28px,3.6vw,40px);font-weight:800;line-height:1.22}
h2{font-size:clamp(24px,2.6vw,32px);font-weight:700}
h3{font-size:20px;font-weight:700}
h4{font-size:17px;font-weight:600}
p{margin:0}
a{color:inherit;text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease}
a:hover{color:var(--c-primary-strong)}
img{display:block;max-width:100%;height:auto}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.skip{position:absolute;left:-9999px;top:0;background:var(--c-primary);color:var(--c-primary-ink);padding:10px 16px;border-radius:0 0 10px 0;z-index:200}
.skip:focus{left:0}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-sm);font-size:15px;font-weight:600;padding:0 22px;height:46px;border:1px solid transparent;transition:transform .16s ease,box-shadow .2s ease,background-color .18s ease,color .18s ease,border-color .18s ease;white-space:nowrap}
.btn--sm{height:38px;padding:0 16px;font-size:14px}
.btn--primary{background:var(--c-primary);color:var(--c-primary-ink);box-shadow:0 1px 2px rgba(0,0,0,.08)}
.btn--primary:hover{background:var(--c-primary-strong);color:#052A20;transform:translateY(-1px);box-shadow:0 10px 24px rgba(0,168,116,.28)}
.btn--primary:active{transform:translateY(0);box-shadow:none}
.btn--accent{background:var(--c-accent);color:#2A1204}
.btn--accent:hover{background:#F26A22;color:#2A1204;transform:translateY(-1px);box-shadow:0 10px 24px rgba(255,122,51,.28)}
.btn--accent:active{transform:translateY(0);box-shadow:none}
.btn--ghost{border-color:rgba(255,255,255,.30);color:#F2F6F4;background:transparent}
.btn--ghost:hover{border-color:rgba(255,255,255,.55);background:rgba(255,255,255,.08);color:#fff}
.btn--outline{border-color:var(--c-line);color:var(--c-ink);background:#fff}
.btn--outline:hover{border-color:var(--c-primary);color:var(--c-primary-strong);background:rgba(0,200,140,.06)}
.btn--text{height:auto;padding:0;color:var(--c-primary-strong);font-weight:600;border:0}
.btn--text i{font-style:normal;transition:transform .18s ease}
.btn--text:hover i{transform:translateX(3px)}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--c-bg-deep);border-bottom:1px solid var(--c-line-dark);transition:box-shadow .2s ease}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(0,0,0,.28)}
.header__inner{display:flex;align-items:center;gap:20px;height:76px;transition:height .2s ease}
.site-header.is-scrolled .header__inner{height:62px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo__mark{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--c-primary),#0B8F6C);display:grid;place-items:center;box-shadow:inset 0 1px 0 rgba(255,255,255,.35)}
.logo__mark svg{width:20px;height:20px}
.logo__text{display:flex;flex-direction:column;line-height:1.15}
.logo__text strong{font-size:16px;font-weight:800;color:#F2F6F4;letter-spacing:.03em;white-space:nowrap}
.logo__text small{font-size:11px;color:rgba(255,255,255,.55);letter-spacing:.06em}
.nav{margin-left:auto}
.nav__list{display:flex;align-items:center;gap:2px}
.nav__item{position:relative}
.nav__link{display:inline-flex;align-items:center;gap:6px;padding:9px 13px;border-radius:var(--r-sm);font-size:15px;font-weight:600;color:rgba(255,255,255,.76);white-space:nowrap}
.nav__link:hover{color:#fff;background:rgba(255,255,255,.08)}
.nav__link.is-active{color:#fff;background:rgba(0,200,140,.16);box-shadow:inset 0 0 0 1px rgba(0,200,140,.35)}
.nav__caret{width:12px;height:12px;transition:transform .18s ease;opacity:.7}
.nav__item--has-mega:hover .nav__caret,.nav__item--has-mega:focus-within .nav__caret{transform:rotate(180deg)}
.header__actions{display:flex;align-items:center;gap:10px;margin-left:6px}
.hamburger{display:none;width:42px;height:42px;border-radius:var(--r-sm);border:1px solid var(--c-line-dark);align-items:center;justify-content:center;margin-left:auto}
.hamburger:hover{background:rgba(255,255,255,.08)}
.hamburger svg{width:20px;height:20px}

/* ---------- mega ---------- */
.mega{position:absolute;top:calc(100% + 12px);left:50%;width:660px;transform:translateX(-50%) translateY(8px);display:grid;grid-template-columns:1fr 1fr 1fr;gap:18px;padding:20px;background:#0F1519;border:1px solid var(--c-line-dark);border-radius:var(--r-md);box-shadow:0 24px 48px rgba(0,0,0,.42);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .16s ease,transform .16s ease,visibility .16s}
.nav__item--has-mega:hover .mega,.nav__item--has-mega:focus-within .mega{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(0)}
.mega__title{margin:0 0 10px;font-size:12px;font-weight:700;letter-spacing:.08em;color:rgba(255,255,255,.48);text-transform:uppercase}
.mega__link{display:block;padding:8px 10px;border-radius:var(--r-sm);font-size:14px;font-weight:600;color:rgba(255,255,255,.82)}
.mega__link small{display:block;font-size:12px;font-weight:400;color:rgba(255,255,255,.48);margin-top:2px}
.mega__link:hover{background:rgba(255,255,255,.07);color:#fff}
.mega__card{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px;border:1px solid var(--c-line-dark);border-radius:var(--r-sm);background:linear-gradient(135deg,rgba(0,200,140,.10),rgba(255,255,255,0));margin-top:8px}
.mega__card b{display:block;font-size:14px;color:#F2F6F4}
.mega__card span span{display:block;font-size:12px;color:rgba(255,255,255,.5)}
.mega__card i{font-style:normal;color:var(--c-primary);transition:transform .18s ease}
.mega__card:hover{border-color:rgba(0,200,140,.5)}
.mega__card:hover i{transform:translateX(3px)}
.nav__cta{display:none}
.nav-scrim{display:none}

/* ---------- hero band ---------- */
.cat-hero{position:relative;background:var(--c-bg-deep);color:#F2F6F4;overflow:hidden;padding-bottom:64px}
.cat-hero__bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.40}
.cat-hero__veil{position:absolute;inset:0;background:
  radial-gradient(70% 70% at 15% 0%,rgba(0,200,140,.20),transparent 65%),
  linear-gradient(180deg,rgba(12,16,20,.86) 0%,rgba(12,16,20,.90) 55%,var(--c-bg-deep) 100%)}
.cat-hero__grid{position:absolute;inset:0;opacity:.04;background-image:linear-gradient(rgba(255,255,255,.9) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.9) 1px,transparent 1px);background-size:44px 44px}
.cat-hero__inner{position:relative;z-index:2;padding-top:56px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.60);margin-bottom:22px}
.crumbs a:hover{color:#fff}
.crumbs span[aria-current]{color:rgba(255,255,255,.60)}
.crumbs .sep{opacity:.5}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;padding:4px 10px;border-radius:6px;background:rgba(0,200,140,.14);color:var(--c-primary);letter-spacing:.04em}
.badge--accent{background:rgba(255,122,51,.16);color:#FF9A5E}
.cat-hero h1{margin:16px 0 14px;color:#F2F6F4;max-width:22ch}
.cat-hero__lead{max-width:640px;color:rgba(255,255,255,.74);font-size:16px}
.cat-hero__cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.stats{display:flex;flex-wrap:wrap;gap:44px;margin-top:38px;padding-top:24px;border-top:1px solid var(--c-line-dark)}
.stats__item{min-width:120px}
.stats__num{font-size:30px;font-weight:800;color:#F2F6F4;line-height:1.1}
.stats__num em{font-style:normal;color:var(--c-accent)}
.stats__label{font-size:13px;color:rgba(255,255,255,.58);margin-top:4px}

/* ---------- sections ---------- */
.section{padding:88px 0}
.section--alt{background:var(--c-surface-2)}
.section--dark{background:var(--c-bg-deep);color:rgba(255,255,255,.72)}
.section--dark h2,.section--dark h3{color:#F2F6F4}
.section__head{max-width:720px;margin-bottom:44px}
.section__head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}
.section__head p{margin-top:12px;color:var(--c-ink-2);font-size:16px}
.section--dark .section__head p{color:rgba(255,255,255,.70)}
.section__eyebrow{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.10em;color:var(--c-primary-strong);margin-bottom:12px}

/* ---------- row list ---------- */
.row-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.row-card{display:grid;grid-template-columns:224px minmax(0,1fr);gap:18px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);padding:18px;box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .2s ease,border-color .18s ease}
.row-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D5DEE7}
.row-card__media{border-radius:var(--r-sm);overflow:hidden;background:var(--c-surface-2);aspect-ratio:16/9;align-self:start}
.row-card__media img{width:100%;height:100%;object-fit:cover}
.row-card__body{min-width:0}
.row-card__top{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:8px}
.tag{display:inline-flex;align-items:center;font-size:12px;font-weight:600;padding:3px 9px;border-radius:6px;background:rgba(0,200,140,.12);color:var(--c-primary-strong)}
.tag--gray{background:var(--c-surface-2);color:var(--c-ink-2)}
.row-card h3{font-size:18px;margin-bottom:8px}
.row-card h3 a:hover{color:var(--c-primary-strong)}
.row-card p{font-size:15px;line-height:1.7;color:var(--c-ink-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.row-card .link-more{display:inline-flex;align-items:center;gap:6px;margin-top:12px;font-size:14px;font-weight:600;color:var(--c-primary-strong)}
.row-card .link-more i{font-style:normal;transition:transform .18s ease}
.row-card:hover .link-more i{transform:translateX(3px)}
.is-hidden{display:none!important}
.load-more{display:flex;justify-content:center;margin-top:36px}
.row-note{margin-top:20px;font-size:13px;color:var(--c-ink-2);display:flex;align-items:center;gap:10px}
.row-note::before{content:"";width:22px;height:1px;background:var(--c-line)}

/* ---------- flow ---------- */
.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.flow__item{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);padding:24px;box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .2s ease}
.flow__item:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.flow__num{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:9px;background:var(--c-primary);color:var(--c-primary-ink);font-size:14px;font-weight:800;margin-bottom:14px}
.flow__item h3{font-size:17px;margin-bottom:8px}
.flow__item p{font-size:14px;line-height:1.7}

/* ---------- checks ---------- */
.checks{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 48px}
.check{display:flex;gap:14px;padding:20px 0;border-top:1px dashed var(--c-line)}
.section--dark .check{border-top:1px dashed var(--c-line-dark)}
.check__dot{flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:rgba(0,200,140,.16);display:grid;place-items:center;color:var(--c-primary);font-size:13px;font-weight:800;margin-top:2px}
.check h3{font-size:16px;margin-bottom:6px}
.check p{font-size:14px;line-height:1.7}

/* ---------- faq ---------- */
.faq{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 22px;align-items:start}
.faq__item{background:#fff;border:1px solid var(--c-line);border-left:3px solid transparent;border-radius:var(--r-md);padding:0 18px;transition:background-color .18s ease,border-color .18s ease,box-shadow .2s ease}
.faq__item:hover{background:#FCFDFE}
.faq__item[open]{border-left-color:var(--c-primary);box-shadow:var(--sh-1)}
.faq__item summary{list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;gap:14px;padding:18px 0;font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.6}
.faq__item summary::-webkit-details-marker{display:none}
.faq__mark{flex:0 0 auto;width:20px;height:20px;position:relative;margin-top:4px}
.faq__mark::before,.faq__mark::after{content:"";position:absolute;background:var(--c-primary-strong);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.faq__mark::before{left:3px;right:3px;top:9px;height:2px}
.faq__mark::after{top:3px;bottom:3px;left:9px;width:2px}
.faq__item[open] .faq__mark::after{transform:scaleY(0);opacity:0}
.faq__a{padding:0 0 18px;font-size:15px;line-height:1.75;color:var(--c-ink-2)}

/* ---------- cta ---------- */
.cta-band{position:relative;background:linear-gradient(135deg,var(--c-bg-deep),var(--c-bg-deep-2));border-radius:var(--r-lg);padding:48px;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;overflow:hidden}
.cta-band::after{content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(0,200,140,.22),transparent 70%)}
.cta-band__text{position:relative;z-index:2}
.cta-band h2{color:#F2F6F4;margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.72)}
.sub-form{position:relative;z-index:2;display:flex;gap:12px;flex-wrap:wrap}
.sub-form label{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.sub-form input{flex:1 1 200px;min-width:0;height:46px;border-radius:var(--r-sm);border:1px solid var(--c-line-dark);background:rgba(255,255,255,.06);color:#F2F6F4;padding:0 14px;font-size:15px;transition:border-color .18s ease,background-color .18s ease}
.sub-form input::placeholder{color:rgba(255,255,255,.42)}
.sub-form input:focus{outline:none;border-color:var(--c-primary);background:rgba(255,255,255,.10)}
.sub-form input[aria-invalid="true"]{border-color:#E0573B}
.form-hint{position:relative;z-index:2;margin-top:14px;font-size:12px;color:rgba(255,255,255,.5)}
.form-error{position:relative;z-index:2;margin-top:8px;font-size:13px;color:#FF8B76;display:none}
.form-error.is-on{display:block}

/* ---------- footer ---------- */
.site-footer{background:var(--c-bg-deep);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:88px}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px}
.footer__brand .logo__text{margin-bottom:14px}
.footer__brand p{font-size:14px;color:rgba(255,255,255,.6);max-width:34ch}
.footer__col h4{font-size:14px;font-weight:600;color:#F2F6F4;margin-bottom:16px}
.footer__col a{display:block;font-size:14px;color:rgba(255,255,255,.72);padding:6px 0}
.footer__col a:hover{color:var(--c-primary)}
.footer__bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;border-top:1px solid var(--c-line-dark);padding:22px 0;font-size:13px;color:rgba(255,255,255,.5)}
.footer__bottom a{color:rgba(255,255,255,.7)}
.footer__bottom a:hover{color:var(--c-primary)}

/* ---------- to top ---------- */
.to-top{position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:50%;background:var(--c-primary);color:var(--c-primary-ink);display:grid;place-items:center;box-shadow:0 10px 24px rgba(0,168,116,.32);opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .2s ease,transform .2s ease,visibility .2s;z-index:70}
.to-top.is-on{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--c-primary-strong)}

/* ---------- responsive ---------- */
@media (max-width:1280px){
  .nav__link{padding:9px 10px;font-size:14px}
}
@media (max-width:1024px){
  .section{padding:64px 0}
  .row-list{grid-template-columns:1fr}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer__grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-band{grid-template-columns:1fr;padding:36px}
  .stats{gap:30px}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .header__inner{height:64px;gap:12px}
  .site-header.is-scrolled .header__inner{height:64px}
  .hamburger{display:inline-flex}
  .header__actions{display:none}
  .nav{position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);background:#0F1519;border-left:1px solid var(--c-line-dark);padding:78px 20px 28px;transform:translateX(100%);transition:transform .24s ease;overflow-y:auto;z-index:92;margin-left:0}
  body.nav-open .nav{transform:translateX(0)}
  body.nav-open{overflow:hidden}
  body.nav-open::after{content:"";position:fixed;inset:0;background:rgba(6,9,12,.6);z-index:80}
  .nav__list{flex-direction:column;align-items:stretch;gap:4px}
  .nav__link{width:100%;justify-content:space-between;padding:13px 12px;font-size:15px;color:rgba(255,255,255,.86)}
  .nav__item--has-mega:hover .mega,.nav__item--has-mega:focus-within .mega{opacity:1;visibility:visible;pointer-events:auto;transform:none;position:static;width:auto;display:grid;grid-template-columns:1fr;box-shadow:none;border:0;background:transparent;padding:4px 0 8px 10px}
  .mega{opacity:1;visibility:visible;pointer-events:auto;transform:none;position:static;width:auto;grid-template-columns:1fr;box-shadow:none;border:0;background:transparent;padding:4px 0 8px 10px}
  .mega__col{margin-bottom:8px}
  .mega__card{margin-top:6px}
  .nav__cta{display:flex;flex-direction:column;gap:10px;margin-top:18px;padding-top:18px;border-top:1px solid var(--c-line-dark)}
  .cat-hero{padding-bottom:48px}
  .cat-hero__inner{padding-top:34px}
  .cat-hero h1{max-width:none}
  .section{padding:48px 0}
  .section__head{margin-bottom:28px}
  .section__head--row{flex-direction:column;align-items:flex-start;gap:14px}
  .row-card{grid-template-columns:1fr;padding:16px}
  .row-card__media{aspect-ratio:16/9}
  .checks{grid-template-columns:1fr;gap:0}
  .faq{grid-template-columns:1fr}
  .stats{gap:24px;margin-top:28px}
  .stats__num{font-size:24px}
  .footer__grid{grid-template-columns:1fr;gap:24px}
  .site-footer{padding-top:44px;margin-top:56px}
  .footer__bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .flow{grid-template-columns:1fr}
  .cta-band{padding:26px;border-radius:var(--r-md)}
  .btn{height:44px;padding:0 18px;font-size:14px}
  .cat-hero__lead{font-size:15px}
}