/* roulang page: index */
:root{
  --c-bg:#060A14;
  --c-bg-2:#0B1224;
  --c-surface:rgba(255,255,255,.045);
  --c-surface-2:rgba(255,255,255,.07);
  --c-line:rgba(120,200,220,.16);
  --c-line-hot:rgba(53,224,214,.45);
  --c-primary:#35E0D6;
  --c-primary-d:#14B9AE;
  --c-primary-l:#7BF3EA;
  --c-accent:#FF4D8D;
  --c-blue:#4C8DFF;
  --c-text:#E8EFF8;
  --c-text-2:#A7B6CC;
  --c-text-3:#6C7C94;
  --c-ok:#34D399;
  --c-warn:#FBBF24;
  --c-err:#F87171;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --glow-primary:0 0 0 1px rgba(53,224,214,.35), 0 8px 28px -6px rgba(53,224,214,.45);
  --glow-accent:0 0 0 1px rgba(255,77,141,.32), 0 8px 26px -8px rgba(255,77,141,.4);
  --shadow-card:0 8px 24px -12px rgba(0,0,0,.6);
  --shadow-card-hover:0 16px 40px -16px rgba(0,0,0,.75);
  --font-cn:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-num:"Space Grotesk",Inter,system-ui,"PingFang SC","Microsoft YaHei",sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
  --gutter: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-cn);
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img{display:block;max-width:100%;height:auto}
a{color:var(--c-primary);text-decoration:none;transition:color .22s var(--ease)}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
input{font:inherit}
::selection{background:rgba(53,224,214,.28);color:#04121A}

::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#070c18}
::-webkit-scrollbar-thumb{
  background:linear-gradient(180deg,rgba(53,224,214,.55),rgba(255,77,141,.45));
  border-radius:6px;
  border:2px solid #070c18;
}
::-webkit-scrollbar-thumb:hover{background:linear-gradient(180deg,rgba(53,224,214,.8),rgba(255,77,141,.6))}
*{scrollbar-width:thin;scrollbar-color:rgba(53,224,214,.5) #070c18}

:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}

/* ---------- 背景装饰 ---------- */
.bg-decor{position:fixed;inset:0;pointer-events:none;z-index:0}
.bg-decor::before{
  content:"";position:absolute;top:-320px;left:50%;transform:translateX(-50%);
  width:1200px;height:760px;border-radius:50%;
  background:radial-gradient(circle,rgba(53,224,214,.22),transparent 65%);
  filter:blur(20px);
}
.bg-decor::after{
  content:"";position:absolute;top:-140px;right:-180px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,77,141,.2),transparent 66%);
  filter:blur(18px);
}
.bg-grid{
  position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.05;
  background-image:linear-gradient(rgba(120,200,220,.6) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(120,200,220,.6) 1px,transparent 1px);
  background-size:64px 64px;
}
.page{position:relative;z-index:1}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(6,10,20,.72);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,224,214,.5),rgba(255,77,141,.42),transparent);
  opacity:0;transition:opacity .24s var(--ease);
}
.site-header.is-scrolled{background:rgba(6,10,20,.92);box-shadow:0 12px 30px -22px rgba(0,0,0,.9)}
.site-header.is-scrolled::after{opacity:1}
.header__inner{
  display:flex;align-items:center;gap:24px;
  height:72px;
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand__mark{
  width:40px;height:40px;border-radius:12px;flex-shrink:0;
  display:grid;place-items:center;
  font-family:var(--font-num);font-weight:700;font-size:19px;color:#04121A;
  background:linear-gradient(135deg,var(--c-primary-l),var(--c-primary) 55%,var(--c-primary-d));
  box-shadow:var(--glow-primary);
}
.brand__text{display:flex;flex-direction:column;line-height:1.2}
.brand__text strong{font-size:17px;font-weight:800;letter-spacing:.01em;color:var(--c-text)}
.brand__text em{
  font-style:normal;font-size:11px;letter-spacing:.16em;color:var(--c-accent);font-weight:600;
}
.nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav__link{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;
  font-size:15px;font-weight:500;color:var(--c-text-2);border-radius:var(--r-sm);
  transition:color .22s var(--ease);
}
.nav__link::after{
  content:"";position:absolute;left:50%;bottom:2px;width:0;height:2px;border-radius:2px;
  background:var(--c-primary);box-shadow:0 0 10px rgba(53,224,214,.8);
  transform:translateX(-50%);transition:width .24s var(--ease);
}
.nav__link:hover{color:var(--c-primary)}
.nav__link:hover::after{width:70%}
.nav__link.is-active{color:var(--c-primary)}
.nav__link.is-active::after{width:70%}
.header__actions{display:flex;align-items:center;gap:10px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-md);
  font-size:15px;font-weight:700;letter-spacing:.01em;white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.btn--sm{height:40px;padding:0 18px;font-size:14px;border-radius:12px}
.btn--primary{
  color:#04121A;
  background:linear-gradient(135deg,var(--c-primary-l),var(--c-primary) 58%,var(--c-primary-d));
  box-shadow:var(--glow-primary);
  border:1px solid rgba(255,255,255,.35);
}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(53,224,214,.5),0 14px 34px -8px rgba(53,224,214,.6);filter:brightness(1.08)}
.btn--primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(53,224,214,.35),0 6px 18px -8px rgba(53,224,214,.4)}
.btn--ghost{
  color:var(--c-primary);
  border:1px solid var(--c-line-hot);
  background:transparent;
}
.btn--ghost:hover{background:rgba(53,224,214,.1);border-color:rgba(53,224,214,.7);transform:translateY(-2px)}
.btn--ghost:active{transform:translateY(0)}
.btn--quiet{color:var(--c-text-2);border:1px solid var(--c-line)}
.btn--quiet:hover{color:var(--c-primary);border-color:var(--c-line-hot);background:rgba(53,224,214,.07)}

.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);
  background-image:linear-gradient(var(--c-primary),var(--c-primary));
  background-repeat:no-repeat;background-position:0 100%;background-size:0 1px;
  padding-bottom:2px;transition:background-size .24s var(--ease);
}
.link-more:hover{background-size:100% 1px}
.link-more svg{transition:transform .24s var(--ease)}
.link-more:hover svg{transform:translateX(4px)}

/* ---------- 汉堡与抽屉 ---------- */
.hamburger{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--c-line);place-items:center;
}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-primary);margin:3px auto;transition:transform .22s var(--ease),opacity .22s var(--ease)}
.hamburger.is-open span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.hamburger.is-open span:nth-child(2){opacity:0}
.hamburger.is-open span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

.drawer{
  position:fixed;inset:0;z-index:60;background:#060A14;
  transform:translateY(-100%);opacity:0;visibility:hidden;
  transition:transform .3s var(--ease),opacity .3s var(--ease),visibility .3s;
  display:flex;flex-direction:column;
}
.drawer.is-open{transform:translateY(0);opacity:1;visibility:visible}
.drawer__head{display:flex;align-items:center;justify-content:space-between;height:56px;padding:0 18px;border-bottom:1px solid rgba(53,224,214,.18)}
.drawer__body{padding:18px;display:flex;flex-direction:column;gap:6px;overflow-y:auto}
.drawer__link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 14px;border-radius:var(--r-md);
  color:var(--c-text);font-size:16px;font-weight:600;
  border:1px solid transparent;
}
.drawer__link:hover,.drawer__link.is-active{color:var(--c-primary);border-color:var(--c-line-hot);background:rgba(53,224,214,.07)}
.drawer__cta{margin-top:14px;padding-top:18px;border-top:1px solid rgba(255,77,141,.22);display:grid;gap:10px}
.drawer__cta .btn{width:100%}

/* ---------- 通用板块 ---------- */
.section{padding:var(--gutter) 0;position:relative}
.section--alt{background:var(--c-bg-2)}
.section--alt::before,.section--alt::after{
  content:"";position:absolute;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(120,200,220,.22),transparent);
}
.section--alt::before{top:0}
.section--alt::after{bottom:0}
.section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section__title{
  position:relative;padding-left:16px;
  font-size:clamp(22px,2.6vw,34px);font-weight:700;line-height:1.3;letter-spacing:-.01em;
}
.section__title::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:4px;height:22px;border-radius:2px;
  background:linear-gradient(180deg,var(--c-primary),var(--c-primary-d));
  box-shadow:0 0 12px rgba(53,224,214,.65);
}
.section__desc{margin-top:12px;font-size:15px;color:var(--c-text-2);max-width:660px;padding-left:16px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--c-accent);
  text-transform:none;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--c-accent);box-shadow:0 0 8px rgba(255,77,141,.8)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:96px 0 88px}
.hero__bg{
  position:absolute;inset:0;z-index:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.hero__bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,20,.86),rgba(6,10,20,.9) 55%,var(--c-bg));
}
.hero__glow{
  position:absolute;top:-260px;left:-160px;width:760px;height:620px;border-radius:50%;z-index:0;
  background:radial-gradient(circle,rgba(53,224,214,.28),transparent 66%);
  filter:blur(24px);
}
.hero__inner{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero__content{max-width:660px}
.hero__title{
  margin:18px 0 0;
  font-size:clamp(30px,4.6vw,54px);font-weight:800;line-height:1.18;letter-spacing:-.02em;
  background:linear-gradient(120deg,#FFFFFF 12%,var(--c-primary-l) 58%,#FFD7E7 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero__sub{margin-top:18px;font-size:clamp(16px,1.6vw,19px);color:var(--c-text-2);max-width:520px}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero__hint{
  margin-top:22px;display:flex;align-items:center;gap:10px;
  font-size:13px;color:var(--c-text-3);
}
.hero__hint b{color:var(--c-primary);font-family:var(--font-num)}

.glass-panel{
  position:relative;border-radius:var(--r-lg);
  background:var(--c-surface);
  border:1px solid var(--c-line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);
}
.hero__panel{padding:26px}
.hero__panel-title{
  font-size:13px;font-weight:600;letter-spacing:.14em;color:var(--c-accent);margin-bottom:16px;
}
.point-list{display:grid;gap:14px}
.point-list li{display:flex;gap:12px;align-items:flex-start}
.point-list .dot{
  width:26px;height:26px;border-radius:9px;flex-shrink:0;margin-top:2px;
  display:grid;place-items:center;
  background:rgba(53,224,214,.12);border:1px solid rgba(53,224,214,.4);
  color:var(--c-primary);font-family:var(--font-num);font-size:12px;font-weight:700;
}
.point-list strong{display:block;font-size:15px;font-weight:600;color:var(--c-text)}
.point-list span{display:block;font-size:13px;color:var(--c-text-3);line-height:1.7}

.stat-bar{
  margin-top:22px;padding-top:20px;border-top:1px dashed rgba(120,200,220,.24);
  display:flex;align-items:flex-end;justify-content:space-between;gap:14px;
}
.stat-bar__num{font-family:var(--font-num);font-size:38px;font-weight:700;line-height:1;color:var(--c-primary);letter-spacing:-.02em}
.stat-bar__label{font-size:12px;color:var(--c-text-3);margin-top:8px;letter-spacing:.06em}
.stat-bar__tag{
  font-size:12px;font-weight:600;color:var(--c-ok);
  background:rgba(52,211,153,.1);border:1px solid rgba(52,211,153,.34);
  border-radius:var(--r-pill);padding:4px 10px;
}

/* ---------- 步骤流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step{
  position:relative;padding:26px 24px;border-radius:var(--r-lg);
  background:var(--c-surface);border:1px solid var(--c-line);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease);
}
.step:hover{transform:translateY(-4px);border-color:var(--c-line-hot);box-shadow:var(--shadow-card-hover);background:var(--c-surface-2)}
.step__no{
  font-family:var(--font-num);font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--c-accent);
}
.step h3{margin:14px 0 10px;font-size:19px;font-weight:600}
.step p{font-size:14px;color:var(--c-text-2)}
.step__line{position:absolute;left:24px;right:24px;bottom:0;height:1px;background:linear-gradient(90deg,transparent,rgba(53,224,214,.5),transparent)}

/* ---------- 品牌故事 ---------- */
.story{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.story p{color:var(--c-text-2);font-size:16px;margin-top:18px}
.story blockquote{
  margin-top:26px;padding:16px 0 16px 20px;border-left:3px solid var(--c-primary);
  background:linear-gradient(90deg,rgba(53,224,214,.08),transparent 70%);
  border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--c-text);font-size:15px;
}
.story__figure{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--c-line);aspect-ratio:4/5}
.story__figure img{width:100%;height:100%;object-fit:cover}
.story__figure::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:45%;
  background:linear-gradient(180deg,transparent,rgba(6,10,20,.86));
}
.story__caption{
  position:absolute;left:20px;bottom:18px;z-index:2;font-size:13px;color:var(--c-text-2);
}
.story__caption b{display:block;color:var(--c-primary);font-size:15px;font-weight:600}

/* ---------- 精选内容卡 ---------- */
.feature-long-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card-long{
  display:grid;grid-template-columns:38% 1fr;gap:0;
  border-radius:var(--r-lg);overflow:hidden;
  background:var(--c-surface);border:1px solid var(--c-line);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.card-long:hover{transform:translateY(-4px);border-color:var(--c-line-hot);box-shadow:var(--shadow-card-hover)}
.card-long__media{position:relative;overflow:hidden;min-height:200px}
.card-long__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.card-long:hover .card-long__media img{transform:scale(1.03)}
.card-long__body{padding:22px;display:flex;flex-direction:column;gap:10px}
.card-long__body h3{font-size:18px;font-weight:600;line-height:1.45}
.card-long__body p{font-size:14px;color:var(--c-text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-bottom{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:8px}
.meta{font-size:13px;color:var(--c-text-3);font-weight:500}
.arrow-ico{color:var(--c-primary);transition:transform .24s var(--ease)}
.card-long:hover .arrow-ico,.mini-card:hover .arrow-ico{transform:translateX(4px)}

.feature-mini-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px}
.mini-card{
  display:flex;flex-direction:column;
  border-radius:var(--r-lg);overflow:hidden;
  background:var(--c-surface);border:1px solid var(--c-line);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.mini-card:hover{transform:translateY(-4px);border-color:var(--c-line-hot);box-shadow:var(--shadow-card-hover)}
.mini-card__media{aspect-ratio:16/10;overflow:hidden}
.mini-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.mini-card:hover .mini-card__media img{transform:scale(1.03)}
.mini-card__body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1}
.mini-card__body h3{font-size:17px;font-weight:600;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mini-card__body p{font-size:13px;color:var(--c-text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

.badge{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;
  color:var(--c-accent);background:rgba(255,77,141,.12);
  border:1px solid rgba(255,77,141,.36);
}
.badge--cyan{color:var(--c-primary);background:rgba(53,224,214,.12);border-color:rgba(53,224,214,.36)}

/* ---------- 最新信息（CMS 列表） ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;color:var(--c-text);
  border-radius:var(--r-lg);overflow:hidden;
  background:var(--c-surface);border:1px solid var(--c-line);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease);
}
.news-card:hover{transform:translateY(-4px);border-color:var(--c-line-hot);box-shadow:var(--shadow-card-hover);background:var(--c-surface-2)}
.news-card__media{aspect-ratio:16/10;overflow:hidden;background:rgba(255,255,255,.03)}
.news-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.news-card:hover .news-card__media img{transform:scale(1.03)}
.news-card__body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-card__title{
  font-size:17px;font-weight:600;line-height:1.5;color:var(--c-text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .22s var(--ease);
}
.news-card:hover .news-card__title{color:var(--c-primary)}
.news-card__desc{font-size:13px;color:var(--c-text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card__meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:10px;border-top:1px solid rgba(120,200,220,.14)}
.news-card__meta time{font-size:13px;color:var(--c-text-3);font-weight:500}

.empty{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:56px 24px;border-radius:var(--r-lg);
  background:var(--c-surface);border:1px dashed rgba(120,200,220,.28);text-align:center;
}
.empty svg{opacity:.6;color:var(--c-primary)}
.empty p{color:var(--c-text-2);font-size:15px}

/* ---------- 信任背书 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  border-radius:var(--r-lg);overflow:hidden;
  background:var(--c-surface);border:1px solid var(--c-line);
}
.stat-cell{padding:28px 24px;border-right:1px solid rgba(120,200,220,.14)}
.stat-cell:last-child{border-right:0}
.stat-cell__num{font-family:var(--font-num);font-size:clamp(28px,3vw,40px);font-weight:700;color:var(--c-primary);line-height:1;letter-spacing:-.02em}
.stat-cell__num i{font-style:normal;font-size:14px;color:var(--c-text-3);margin-left:4px;font-weight:500}
.stat-cell__label{margin-top:10px;font-size:13px;color:var(--c-text-3);letter-spacing:.04em}
.cert-row{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;margin-top:28px}
.cert{
  display:flex;align-items:center;justify-content:center;gap:8px;
  padding:16px 10px;border-radius:var(--r-md);
  background:rgba(255,255,255,.03);border:1px solid var(--c-line);
  font-size:13px;color:var(--c-text-3);font-weight:500;
  filter:grayscale(60%);opacity:.8;
  transition:filter .24s var(--ease),opacity .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease);
}
.cert:hover{filter:grayscale(0);opacity:1;border-color:var(--c-line-hot);color:var(--c-primary)}
.cert svg{color:var(--c-primary);flex-shrink:0}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:14px;max-width:920px}
.faq-item{
  border-radius:var(--r-md);border:1px solid var(--c-line);
  background:var(--c-surface);overflow:hidden;
  transition:border-color .24s var(--ease),background .24s var(--ease);
}
.faq-item[open]{border-color:var(--c-line-hot);background:var(--c-surface-2)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--c-text);
  transition:color .22s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--c-primary)}
.faq-item[open] summary{color:var(--c-primary);border-left:3px solid var(--c-primary)}
.faq-item .ico{width:22px;height:22px;flex-shrink:0;position:relative}
.faq-item .ico::before,.faq-item .ico::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-primary);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.faq-item .ico::before{width:12px;height:2px}
.faq-item .ico::after{width:2px;height:12px}
.faq-item[open] .ico::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-item__body{padding:0 20px 20px;font-size:15px;color:var(--c-text-2);line-height:1.9}

/* ---------- CTA 订阅 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  padding:44px 40px;
  background:linear-gradient(120deg,rgba(53,224,214,.12),rgba(255,77,141,.08) 62%,rgba(76,141,255,.08));
  border:1px solid var(--c-line-hot);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  clip-path:polygon(12px 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%,0 12px);
  display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.32}
.cta-band p{margin-top:12px;color:var(--c-text-2);font-size:15px}
.subscribe{display:flex;gap:12px;flex-wrap:wrap}
.field{
  flex:1 1 260px;min-width:0;height:48px;padding:0 16px;
  border-radius:var(--r-md);color:var(--c-text);
  background:rgba(255,255,255,.05);border:1px solid var(--c-line);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
.field::placeholder{color:var(--c-text-3)}
.field:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(53,224,214,.14);background:rgba(255,255,255,.07)}
.subscribe__tip{flex:1 1 100%;font-size:13px;color:var(--c-text-3)}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;margin-top:0;
  background:#05080F;border-top:1px solid transparent;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,224,214,.5),rgba(255,77,141,.42),transparent);
}
.footer__grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;
  padding:64px 0 40px;
}
.footer__col h4{font-size:14px;font-weight:700;color:var(--c-text);letter-spacing:.06em;margin-bottom:16px}
.footer__col p{font-size:13px;color:var(--c-text-3);line-height:1.9;margin-top:14px;max-width:320px}
.footer__links{display:grid;gap:2px}
.footer__links a{
  display:flex;align-items:center;min-height:44px;
  font-size:14px;color:var(--c-text-2);
  transition:color .22s var(--ease),transform .22s var(--ease);
}
.footer__links a:hover{color:var(--c-primary);transform:translateX(4px)}
.footer__bar{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 28px;border-top:1px solid rgba(120,200,220,.14);
  font-size:13px;color:var(--c-text-3);
}
.footer__bar a{color:var(--c-text-3)}
.footer__bar a:hover{color:var(--c-primary)}
.footer__brand{display:flex;align-items:center;gap:12px}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
  .btn:hover,.step:hover,.mini-card:hover,.news-card:hover,.card-long:hover{transform:none}
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--gutter:72px}
  .hero__inner{grid-template-columns:1fr;gap:40px}
  .hero__panel{max-width:640px}
  .story{grid-template-columns:1fr;gap:32px}
  .story__figure{aspect-ratio:16/10;max-width:620px}
}
@media (max-width:1023px){
  :root{--gutter:64px}
  .nav{display:none}
  .header__actions .btn{display:none}
  .hamburger{display:grid}
  .steps{grid-template-columns:1fr 1fr}
  .feature-long-grid{grid-template-columns:1fr}
  .feature-mini-grid{grid-template-columns:1fr 1fr}
  .news-grid{grid-template-columns:1fr 1fr}
  .stat-strip{grid-template-columns:1fr 1fr}
  .stat-cell:nth-child(2){border-right:0}
  .stat-cell{border-bottom:1px solid rgba(120,200,220,.14)}
  .stat-cell:nth-child(3),.stat-cell:nth-child(4){border-bottom:0}
  .cert-row{grid-template-columns:repeat(3,1fr)}
  .cta-band{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr 1fr;gap:24px}
}
@media (max-width:767px){
  :root{--gutter:56px}
  .container{padding:0 18px}
  .header__inner{height:56px}
  .brand__mark{width:36px;height:36px;border-radius:11px;font-size:17px}
  .brand__text strong{font-size:15px}
  .brand__text em{font-size:10px;letter-spacing:.12em}
  .hero{padding:64px 0 56px}
  .hero__cta .btn{flex:1 1 100%}
  .steps{grid-template-columns:1fr}
  .feature-mini-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .stat-strip{grid-template-columns:1fr}
  .stat-cell{border-right:0!important;border-bottom:1px solid rgba(120,200,220,.14)!important}
  .stat-cell:last-child{border-bottom:0!important}
  .cert-row{grid-template-columns:1fr 1fr}
  .card-long{grid-template-columns:1fr}
  .card-long__media{min-height:180px;aspect-ratio:16/10}
  .cta-band{padding:28px 22px}
  .footer__grid{grid-template-columns:1fr;padding:48px 0 28px}
  .section__head{flex-direction:column;align-items:flex-start;gap:14px}
}
@media (max-width:519px){
  .hero__title{font-size:28px}
  .cert-row{grid-template-columns:1fr}
  .stat-bar{flex-direction:column;align-items:flex-start;gap:6px}
}

/* roulang page: article */
:root{
  --c-bg:#060A14;--c-bg-2:#0B1224;
  --c-surface:rgba(255,255,255,.045);--c-surface-2:rgba(255,255,255,.07);
  --c-line:rgba(120,200,220,.16);--c-line-hot:rgba(53,224,214,.45);
  --c-primary:#35E0D6;--c-primary-deep:#14B9AE;--c-primary-light:#7BF3EA;
  --c-accent:#FF4D8D;--c-blue:#4C8DFF;
  --c-text:#E8EFF8;--c-text-2:#A7B6CC;--c-text-3:#6C7C94;
  --c-ok:#34D399;--c-warn:#FBBF24;--c-err:#F87171;
  --r-sm:8px;--r-md:14px;--r-lg:20px;--r-pill:999px;
  --glow-primary:0 0 0 1px rgba(53,224,214,.35),0 8px 28px -6px rgba(53,224,214,.45);
  --shadow-card:0 8px 24px -12px rgba(0,0,0,.6);
  --shadow-card-hover:0 16px 40px -16px rgba(0,0,0,.75);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--c-bg);color:var(--c-text);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(900px 520px at 18% -8%,rgba(53,224,214,.16),transparent 68%),
    radial-gradient(520px 360px at 96% 4%,rgba(255,77,141,.13),transparent 70%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.05;
  background-image:linear-gradient(rgba(120,200,220,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(120,200,220,.6) 1px,transparent 1px);
  background-size:64px 64px;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
::selection{background:rgba(53,224,214,.28);color:#fff}
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:#0B1224;border-radius:6px}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,var(--c-primary),var(--c-primary-deep));border-radius:6px}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;position:relative;z-index:1}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(6,10,20,.72);
  backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%);
  transition:background .22s var(--ease)}
.site-header.is-scrolled{background:rgba(6,10,20,.92)}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;opacity:0;
  background:linear-gradient(90deg,transparent,rgba(53,224,214,.5),rgba(255,77,141,.45),transparent);
  transition:opacity .22s var(--ease)}
.site-header.is-scrolled::after{opacity:1}
.header__inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;flex-shrink:0}
.brand__mark{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-deep));color:#04121A;
  font-weight:800;font-size:18px;box-shadow:var(--glow-primary)}
.brand__text{display:flex;flex-direction:column;line-height:1.2}
.brand__text strong{font-size:17px;font-weight:800;letter-spacing:.02em;color:var(--c-text)}
.brand__text em{font-style:normal;font-size:11px;letter-spacing:.16em;color:var(--c-text-3)}
.nav{display:flex;align-items:center;gap:4px}
.nav__link{position:relative;padding:10px 14px;font-size:15px;font-weight:500;color:var(--c-text-2);
  border-radius:var(--r-sm);transition:color .2s var(--ease)}
.nav__link::after{content:"";position:absolute;left:50%;bottom:2px;width:70%;height:2px;border-radius:2px;
  transform:translateX(-50%) scaleX(0);transform-origin:left center;
  background:linear-gradient(90deg,var(--c-primary),var(--c-primary-light));
  box-shadow:0 0 10px rgba(53,224,214,.6);transition:transform .22s var(--ease)}
.nav__link:hover,.nav__link.is-active{color:var(--c-primary);text-shadow:0 0 12px rgba(53,224,214,.45)}
.nav__link:hover::after,.nav__link.is-active::after{transform:translateX(-50%) scaleX(1)}
.header__actions{display:flex;align-items:center;gap:12px}

/* ---------- buttons / badge ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;
  border-radius:var(--r-md);font-size:15px;font-weight:700;border:1px solid transparent;
  transition:transform .22s var(--ease),filter .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease)}
.btn--primary{background:linear-gradient(135deg,var(--c-primary),var(--c-primary-light));color:#04121A;box-shadow:var(--glow-primary)}
.btn--primary:hover{filter:brightness(1.08);transform:translateY(-2px)}
.btn--primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(53,224,214,.35)}
.btn--ghost{background:transparent;border-color:var(--c-line-hot);color:var(--c-primary)}
.btn--ghost:hover{background:rgba(53,224,214,.10);border-color:rgba(53,224,214,.7);transform:translateY(-2px)}
.btn--ghost:active{transform:translateY(0)}
.btn--sm{height:40px;padding:0 18px;font-size:14px}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;white-space:nowrap}
.badge--accent{color:var(--c-accent);background:rgba(255,77,141,.12);border:1px solid rgba(255,77,141,.35)}
.badge--primary{color:var(--c-primary);background:rgba(53,224,214,.12);border:1px solid rgba(53,224,214,.35)}
.tag{display:inline-flex;align-items:center;padding:6px 14px;border-radius:var(--r-pill);font-size:13px;
  color:var(--c-text-2);background:var(--c-surface);border:1px solid var(--c-line);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease)}
.tag:hover{color:var(--c-primary);border-color:var(--c-line-hot);background:rgba(53,224,214,.08)}

/* ---------- breadcrumb ---------- */
.breadcrumb-bar{padding-top:28px;padding-bottom:6px}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--c-text-3);overflow:hidden}
.breadcrumb a{color:var(--c-text-3);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:rgba(120,200,220,.35)}
.breadcrumb .current{color:var(--c-text-2);max-width:340px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* ---------- article layout ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:40px;padding-top:24px;padding-bottom:8px}
.article-shell{width:100%;max-width:800px;margin:0 auto;min-width:0}
.article-head{padding-bottom:24px;border-bottom:1px solid var(--c-line);position:relative}
.article-head::after{content:"";position:absolute;left:0;bottom:-1px;width:120px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--c-primary),rgba(255,77,141,.7))}
.article-head h1{font-family:Inter,system-ui,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:clamp(27px,3.6vw,42px);font-weight:800;line-height:1.24;letter-spacing:-.02em;margin-top:16px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;margin-top:20px;font-size:13px;color:var(--c-text-3);font-weight:500}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(120,200,220,.35)}

.article-body{font-size:17px;line-height:1.95;color:var(--c-text-2);padding-top:34px}
.article-body>*+*{margin-top:1.6em}
.article-body p{margin:0}
.article-body h2{position:relative;padding-left:16px;margin-top:2.4em;font-size:clamp(20px,2.2vw,26px);
  font-weight:700;line-height:1.45;color:var(--c-text)}
.article-body h2::before{content:"";position:absolute;left:0;top:.28em;width:4px;height:1em;border-radius:2px;
  background:linear-gradient(180deg,var(--c-primary),var(--c-primary-deep))}
.article-body h3{font-size:19px;font-weight:600;line-height:1.5;color:var(--c-text);margin-top:2em}
.article-body blockquote{margin:0;padding:18px 22px;border-left:3px solid var(--c-primary);
  background:var(--c-surface);border-radius:0 var(--r-md) var(--r-md) 0;color:var(--c-text)}
.article-body strong{color:var(--c-text);font-weight:700}
.article-body a{color:var(--c-primary);background-image:linear-gradient(var(--c-primary),var(--c-primary));
  background-size:0 1px;background-repeat:no-repeat;background-position:0 100%;transition:background-size .22s var(--ease)}
.article-body a:hover{background-size:100% 1px}
.article-body ul{padding-left:1.4em}
.article-body ul li{position:relative;margin-top:.6em}
.article-body ul li::before{content:"";position:absolute;left:-1.1em;top:.78em;width:7px;height:7px;
  border-radius:2px;background:var(--c-primary)}
.article-body ol{padding-left:1.5em;list-style:decimal}
.article-body ol li{margin-top:.6em}
.article-body ol li::marker{color:var(--c-primary);font-weight:700}
.article-body img{width:100%;height:auto;border-radius:var(--r-md);border:1px solid var(--c-line)}
.article-body figure{margin:0}
.article-body figcaption{font-size:13px;color:var(--c-text-3);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;border:1px solid var(--c-line);
  border-radius:var(--r-md);overflow:hidden}
.article-body th,.article-body td{padding:12px 16px;border:1px solid var(--c-line);text-align:left}
.article-body thead th{background:rgba(53,224,214,.08);color:var(--c-text);font-weight:600}
.article-body tbody tr:nth-child(even){background:var(--c-surface)}
.article-body hr{border:0;height:1px;background:linear-gradient(90deg,transparent,rgba(120,200,220,.45),transparent)}

/* ---------- empty ---------- */
.empty{padding:64px 24px;text-align:center;border:1px dashed var(--c-line);border-radius:var(--r-lg);background:var(--c-surface)}
.empty svg{width:56px;height:56px;margin:0 auto 18px;color:rgba(53,224,214,.6)}
.empty p{font-size:17px;color:var(--c-text-2);margin-bottom:22px}

/* ---------- article footer blocks ---------- */
.article-foot{padding-top:44px;margin-top:16px;border-top:1px solid var(--c-line)}
.block-title{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:700;color:var(--c-text);margin-bottom:20px}
.block-title::before{content:"";width:4px;height:20px;border-radius:2px;
  background:linear-gradient(180deg,var(--c-primary),var(--c-accent))}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:44px}
.rel-list{display:grid;gap:16px}
.rel-card{display:grid;grid-template-columns:38% 1fr;gap:18px;padding:16px;border-radius:var(--r-lg);
  background:var(--c-surface);border:1px solid var(--c-line);box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease)}
.rel-card:hover{transform:translateY(-4px);border-color:var(--c-line-hot);box-shadow:var(--shadow-card-hover)}
.rel-card__media{aspect-ratio:16/10;border-radius:var(--r-md);overflow:hidden;background:var(--c-bg-2)}
.rel-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.rel-card:hover .rel-card__media img{transform:scale(1.03)}
.rel-card__body{display:flex;flex-direction:column;gap:8px;min-width:0}
.rel-card__body h3{font-size:17px;font-weight:600;line-height:1.45;color:var(--c-text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-card__body p{font-size:13px;color:var(--c-text-3)}
.rel-card:hover .rel-card__body h3{color:var(--c-primary)}
.article-foot .btn{margin-top:32px}

/* ---------- sidebar ---------- */
.article-side{display:none}
.side-card{padding:22px;border-radius:var(--r-lg);background:var(--c-surface);border:1px solid var(--c-line);
  backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);margin-bottom:20px}
.side-card h3{font-size:15px;font-weight:700;color:var(--c-text);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--c-primary)}
.side-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 0;
  font-size:14px;color:var(--c-text-2);border-bottom:1px solid rgba(120,200,220,.09);transition:color .2s var(--ease)}
.side-list a:last-child{border-bottom:0}
.side-list a:hover{color:var(--c-primary)}
.side-list a span{font-size:12px;color:var(--c-text-3)}
.side-card--cta{background:linear-gradient(150deg,rgba(53,224,214,.14),rgba(255,77,141,.10));border-color:var(--c-line-hot)}
.side-card--cta p{font-size:13px;color:var(--c-text-2);margin-bottom:16px}
.side-card--cta .btn{width:100%}

/* ---------- cta band ---------- */
.cta-band{padding:0 24px;margin:80px 0 0}
.cta-band__inner{max-width:var(--container);margin:0 auto;position:relative;overflow:hidden;
  padding:48px 44px;border-radius:var(--r-lg);border:1px solid var(--c-line-hot);
  background:linear-gradient(120deg,rgba(53,224,214,.13),rgba(255,77,141,.10));
  backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  clip-path:polygon(12px 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%,0 12px)}
.cta-band__text h2{font-size:clamp(21px,2.4vw,30px);font-weight:700;line-height:1.35}
.cta-band__text p{margin-top:10px;font-size:15px;color:var(--c-text-2);max-width:600px}
.cta-band__actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{position:relative;margin-top:88px;background:var(--c-bg-2);border-top:1px solid var(--c-line);z-index:1}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,224,214,.5),rgba(255,77,141,.45),transparent)}
.footer__grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.3fr;gap:40px;padding:56px 0 40px}
.footer__col h4{font-size:14px;font-weight:700;color:var(--c-text);margin-bottom:18px;letter-spacing:.02em}
.footer__col p{font-size:13px;line-height:1.9;color:var(--c-text-3);margin-top:18px;max-width:340px}
.footer__brand{margin-bottom:0}
.footer__links{display:flex;flex-direction:column;gap:4px}
.footer__links a{display:inline-block;padding:5px 0;font-size:14px;color:var(--c-text-2);transition:color .2s var(--ease),transform .2s var(--ease)}
.footer__links a:hover{color:var(--c-primary);transform:translateX(3px)}
.footer__bar{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0;border-top:1px solid rgba(120,200,220,.12);font-size:13px;color:var(--c-text-3)}

/* ---------- drawer ---------- */
.hamburger{display:none;width:44px;height:44px;border-radius:var(--r-md);border:1px solid var(--c-line);
  align-items:center;justify-content:center;flex-direction:column;gap:4px;transition:border-color .2s var(--ease)}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-text-2);transition:background .2s var(--ease)}
.hamburger:hover{border-color:var(--c-line-hot)}
.hamburger:hover span{background:var(--c-primary)}
.drawer{position:fixed;inset:0;z-index:200;padding:20px;overflow-y:auto;visibility:hidden;
  transform:translateY(-100%);background:rgba(6,10,20,.98);backdrop-filter:blur(18px);
  transition:transform .26s var(--ease),visibility .26s var(--ease)}
.drawer.is-open{transform:translateY(0);visibility:visible}
.drawer__top{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer__close{width:44px;height:44px;border-radius:var(--r-md);border:1px solid var(--c-line);
  display:grid;place-items:center;font-size:20px;color:var(--c-text-2)}
.drawer__close:hover{border-color:var(--c-line-hot);color:var(--c-primary)}
.drawer__nav{display:flex;flex-direction:column;border-top:1px solid rgba(53,224,214,.25)}
.drawer__nav a{display:flex;align-items:center;min-height:52px;padding:12px 4px;font-size:16px;color:var(--c-text-2);
  border-bottom:1px solid rgba(255,77,141,.18)}
.drawer__nav a:hover,.drawer__nav a.is-active{color:var(--c-primary)}
.drawer__cta{margin-top:28px}
.drawer__cta .btn{width:100%}

@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  .rel-card:hover,.btn:hover{transform:none!important}
}

@media (max-width:1279px){
  .article-side{display:none}
}
@media (min-width:1280px){
  .article-layout{grid-template-columns:minmax(0,1fr) 320px;gap:40px;align-items:start}
  .article-side{display:block}
  .article-side__sticky{position:sticky;top:96px}
}
@media (max-width:1023px){
  .nav{gap:0}
  .nav__link{padding:10px 10px;font-size:14px}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .header__inner{height:56px}
  .site-header{background:rgba(6,10,20,.92)}
  .nav{display:none}
  .hamburger{display:flex}
  .header__actions .btn{display:none}
  .brand__mark{width:34px;height:34px;font-size:16px}
  .brand__text strong{font-size:15px}
  .brand__text em{font-size:10px;letter-spacing:.1em}
  .breadcrumb-bar{padding-top:20px}
  .article-layout{padding-top:16px;gap:28px}
  .article-body{font-size:16px;line-height:1.9;padding-top:26px}
  .rel-card{grid-template-columns:1fr;gap:14px}
  .rel-card__media{aspect-ratio:16/9}
  .cta-band{margin-top:56px;padding:0 18px}
  .cta-band__inner{padding:32px 22px;flex-direction:column;align-items:flex-start}
  .cta-band__actions{width:100%}
  .cta-band__actions .btn{flex:1}
  .site-footer{margin-top:56px}
  .footer__grid{grid-template-columns:1fr;gap:26px;padding:40px 0 28px}
  .footer__links a{padding:11px 0}
  .footer__bar{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:520px){
  .article-meta{gap:8px 14px}
  .article-head h1{font-size:24px}
  .empty{padding:44px 18px}
}

/* roulang page: category1 */
:root{
  --c-bg:#060A14;
  --c-bg-2:#0B1224;
  --c-surface:rgba(255,255,255,.045);
  --c-surface-2:rgba(255,255,255,.07);
  --c-line:rgba(120,200,220,.16);
  --c-line-hot:rgba(53,224,214,.45);
  --c-primary:#35E0D6;
  --c-primary-deep:#14B9AE;
  --c-primary-light:#7BF3EA;
  --c-accent:#FF4D8D;
  --c-blue:#4C8DFF;
  --c-text:#E8EFF8;
  --c-text-2:#A7B6CC;
  --c-text-3:#6C7C94;
  --c-ok:#34D399;
  --c-warn:#FBBF24;
  --c-err:#F87171;
  --glow-primary:0 0 0 1px rgba(53,224,214,.35),0 8px 28px -6px rgba(53,224,214,.45);
  --r-sm:8px; --r-md:14px; --r-lg:20px; --r-pill:999px;
  --shadow-1:0 8px 24px -12px rgba(0,0,0,.6);
  --shadow-2:0 16px 40px -16px rgba(0,0,0,.75);
  --ease:cubic-bezier(.22,.61,.36,1);
  --header-h:72px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(900px 420px at 12% -8%,rgba(53,224,214,.16),transparent 70%),
    radial-gradient(540px 320px at 92% 4%,rgba(255,77,141,.12),transparent 72%),
    linear-gradient(180deg,#060A14 0%,#070C18 45%,#060A14 100%);
}
body::after{
  content:"";
  position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.045;
  background-image:linear-gradient(rgba(120,200,220,.6) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(120,200,220,.6) 1px,transparent 1px);
  background-size:64px 64px;
}
body.is-locked{overflow:hidden}
img{max-width:100%;display:block}
a{color:var(--c-primary);text-decoration:none}
a:hover{color:var(--c-primary-light)}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}

::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:#080E1C;border-radius:6px}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,var(--c-primary-deep),var(--c-primary));border-radius:6px}
*{scrollbar-color:var(--c-primary-deep) #080E1C;scrollbar-width:thin}

.container{max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section--tight{padding:64px 0}
.section--alt{background:linear-gradient(180deg,rgba(11,18,36,0),rgba(11,18,36,.85) 22%,rgba(11,18,36,.85) 78%,rgba(11,18,36,0))}

.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.sec-head h2{font-size:clamp(22px,2.6vw,34px);display:flex;align-items:center;gap:14px}
.sec-head h2::before{content:"";width:4px;height:22px;border-radius:2px;background:var(--c-primary);box-shadow:0 0 12px rgba(53,224,214,.6)}
.sec-head p{margin-top:10px;color:var(--c-text-2);max-width:640px;font-size:15px}
.sec-more{color:var(--c-primary);font-size:14px;font-weight:600;white-space:nowrap;background-image:linear-gradient(var(--c-primary),var(--c-primary));background-repeat:no-repeat;background-position:0 100%;background-size:0 1px;transition:background-size .24s var(--ease)}
.sec-more:hover{background-size:100% 1px}

/* 顶栏 */
.site-header{
  position:sticky;top:0;z-index:60;height:var(--header-h);
  background:rgba(6,10,20,.72);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;opacity:0;
  background:linear-gradient(90deg,transparent,rgba(53,224,214,.5),rgba(255,77,141,.5),transparent);
  transition:opacity .24s var(--ease);
}
.site-header.is-scrolled{background:rgba(6,10,20,.92);box-shadow:0 12px 30px -20px rgba(0,0,0,.9)}
.site-header.is-scrolled::after{opacity:1}
.header__inner{height:100%;display:flex;align-items:center;gap:28px}

.brand{display:flex;align-items:center;gap:12px;color:var(--c-text)}
.brand__mark{
  width:38px;height:38px;flex:0 0 38px;display:grid;place-items:center;
  border-radius:12px;font-weight:800;font-size:18px;color:#04121A;
  background:linear-gradient(135deg,var(--c-primary-light),var(--c-primary-deep));
  box-shadow:0 0 0 1px rgba(255,255,255,.25),0 8px 20px -8px rgba(53,224,214,.8);
}
.brand__text{display:flex;flex-direction:column;line-height:1.15}
.brand__text strong{font-size:17px;font-weight:800;letter-spacing:.02em}
.brand__text em{font-style:normal;font-size:11px;color:var(--c-text-3);letter-spacing:.14em}

.nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav__link{
  position:relative;display:inline-block;padding:10px 14px;font-size:14.5px;font-weight:600;
  color:var(--c-text-2);border-radius:var(--r-sm);transition:color .2s var(--ease);
}
.nav__link::after{
  content:"";position:absolute;left:50%;bottom:4px;width:0;height:2px;border-radius:2px;
  background:var(--c-primary);box-shadow:0 0 10px rgba(53,224,214,.9);
  transform:translateX(-50%);transition:width .22s var(--ease);
}
.nav__link:hover{color:var(--c-primary)}
.nav__link:hover::after{width:70%}
.nav__link.is-active{color:var(--c-primary);text-shadow:0 0 12px rgba(53,224,214,.55)}
.nav__link.is-active::after{width:70%}

.header__actions{display:flex;align-items:center;gap:12px;margin-left:8px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-md);font-size:14.5px;font-weight:700;
  letter-spacing:.02em;white-space:nowrap;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),filter .2s var(--ease);
}
.btn--primary{color:#04121A;background:linear-gradient(135deg,var(--c-primary-light),var(--c-primary) 55%,var(--c-primary-deep));box-shadow:var(--glow-primary),inset 0 0 0 1px rgba(255,255,255,.35)}
.btn--primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(53,224,214,.5),0 14px 36px -8px rgba(53,224,214,.6);color:#04121A}
.btn--primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(53,224,214,.4),0 6px 18px -8px rgba(53,224,214,.5)}
.btn--ghost{color:var(--c-primary);background:transparent;box-shadow:inset 0 0 0 1px var(--c-line-hot)}
.btn--ghost:hover{background:rgba(53,224,214,.1);box-shadow:inset 0 0 0 1px rgba(53,224,214,.7);color:var(--c-primary-light);transform:translateY(-2px)}
.btn--sm{height:40px;padding:0 18px;font-size:13.5px}

.burger{
  display:none;width:44px;height:44px;border-radius:12px;place-items:center;
  box-shadow:inset 0 0 0 1px var(--c-line);color:var(--c-text);
}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:currentColor;margin:3px auto;transition:transform .22s var(--ease),opacity .22s var(--ease)}
.burger.is-open span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

.drawer{
  position:fixed;inset:0;z-index:80;background:#060A14;
  transform:translateY(-100%);opacity:0;visibility:hidden;
  transition:transform .28s var(--ease),opacity .28s var(--ease),visibility .28s;
  display:flex;flex-direction:column;padding:18px 0 28px;overflow-y:auto;
}
.drawer.is-open{transform:translateY(0);opacity:1;visibility:visible}
.drawer__top{display:flex;align-items:center;justify-content:space-between;padding:0 20px 18px;border-bottom:1px solid rgba(53,224,214,.25)}
.drawer__links{display:flex;flex-direction:column;padding:12px 12px 0}
.drawer__links a{
  display:flex;align-items:center;justify-content:space-between;min-height:54px;padding:0 12px;
  color:var(--c-text);font-size:16px;font-weight:600;border-bottom:1px solid rgba(255,255,255,.06);
}
.drawer__links a.is-active{color:var(--c-primary)}
.drawer__links a::after{content:"→";color:var(--c-text-3);font-size:14px}
.drawer__cta{margin:24px 20px 0}

/* Hero */
.cat-hero{
  position:relative;overflow:hidden;
  min-height:268px;display:flex;align-items:center;
  padding:56px 0 44px;
  background-image:linear-gradient(90deg,rgba(6,10,20,.94) 0%,rgba(6,10,20,.78) 55%,rgba(6,10,20,.9) 100%),url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
}
.cat-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,224,214,.5),rgba(255,77,141,.4),transparent);
}
.cat-hero__inner{position:relative;z-index:2;max-width:820px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3);margin-bottom:18px}
.crumb a{color:var(--c-text-2)}
.crumb a:hover{color:var(--c-primary)}
.crumb span.sep{color:var(--c-text-3)}
.crumb .now{color:var(--c-primary)}
.cat-hero h1{font-size:clamp(28px,4vw,46px);font-weight:800;letter-spacing:-.02em;line-height:1.18}
.cat-hero h1 b{color:var(--c-primary);font-weight:800}
.cat-hero .lead{margin-top:16px;font-size:16px;color:var(--c-text-2);max-width:640px}
.anchor-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.anchor-tag{
  display:inline-flex;align-items:center;height:34px;padding:0 14px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;color:var(--c-text-2);
  background:var(--c-surface);box-shadow:inset 0 0 0 1px var(--c-line);
  transition:color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.anchor-tag:hover{color:var(--c-primary);box-shadow:inset 0 0 0 1px var(--c-line-hot);transform:translateY(-2px)}

/* 分类主体：左目录 + 右卡片列表 */
.cat-layout{display:grid;grid-template-columns:272px minmax(0,1fr);gap:36px;align-items:start}
.toc{
  position:sticky;top:calc(var(--header-h) + 22px);
  background:var(--c-surface);backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--c-line);border-radius:var(--r-lg);padding:20px 16px;box-shadow:var(--shadow-1);
}
.toc h2{font-size:14px;color:var(--c-text-3);letter-spacing:.16em;font-weight:600;padding:0 10px 12px;border-bottom:1px solid var(--c-line);margin-bottom:10px}
.toc__link{
  position:relative;display:flex;align-items:center;justify-content:space-between;
  min-height:46px;padding:0 12px;border-radius:var(--r-sm);
  font-size:14px;font-weight:600;color:var(--c-text-2);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.toc__link::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%) scaleY(0);
  width:3px;height:22px;border-radius:2px;background:var(--c-primary);box-shadow:0 0 10px rgba(53,224,214,.8);
  transition:transform .22s var(--ease);
}
.toc__link:hover{color:var(--c-primary);background:rgba(53,224,214,.07)}
.toc__link.is-active{color:var(--c-primary);background:rgba(53,224,214,.09)}
.toc__link.is-active::before{transform:translateY(-50%) scaleY(1)}
.toc__link i{font-style:normal;font-size:12px;color:var(--c-text-3)}

.cat-list{display:flex;flex-direction:column;gap:22px}
.cat-card{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2fr);gap:22px;
  background:var(--c-surface);backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--c-line);border-radius:var(--r-lg);padding:20px;
  box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.cat-card:hover{transform:translateY(-4px);border-color:var(--c-line-hot);box-shadow:var(--shadow-2)}
.media{position:relative;overflow:hidden;border-radius:var(--r-md);background:linear-gradient(140deg,rgba(53,224,214,.14),rgba(255,77,141,.1),rgba(11,18,36,.9))}
.media img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .4s var(--ease)}
.cat-card:hover .media img{transform:scale(1.03)}
.cat-card__media{aspect-ratio:4/3;align-self:stretch}
.cat-card__body{display:flex;flex-direction:column;gap:10px;min-width:0}
.badge{
  display:inline-flex;align-items:center;align-self:flex-start;height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.04em;
  color:var(--c-accent);background:rgba(255,77,141,.12);box-shadow:inset 0 0 0 1px rgba(255,77,141,.4);
}
.badge--cyan{color:var(--c-primary);background:rgba(53,224,214,.12);box-shadow:inset 0 0 0 1px rgba(53,224,214,.4)}
.cat-card h3{font-size:19px;font-weight:600;line-height:1.45}
.cat-card h3 a{color:var(--c-text)}
.cat-card h3 a:hover{color:var(--c-primary)}
.cat-card p{color:var(--c-text-2);font-size:14.5px}
.tick-list{display:flex;flex-direction:column;gap:6px;margin-top:2px}
.tick-list li{position:relative;padding-left:18px;font-size:13.5px;color:var(--c-text-3)}
.tick-list li::before{content:"";position:absolute;left:0;top:.66em;width:6px;height:6px;border-radius:2px;background:var(--c-primary);box-shadow:0 0 8px rgba(53,224,214,.7)}
.cat-card__foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:6px}
.cat-card__foot .go{font-size:13.5px;font-weight:600;color:var(--c-primary)}
.cat-card__foot .go::after{content:"→";margin-left:6px;transition:margin-left .2s var(--ease)}
.cat-card:hover .cat-card__foot .go::after{margin-left:10px}

.pager{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:30px}
.pager__item{
  display:inline-grid;place-items:center;min-width:44px;height:44px;padding:0 14px;
  border-radius:var(--r-md);font-size:14px;font-weight:600;color:var(--c-text-2);
  background:var(--c-surface);box-shadow:inset 0 0 0 1px var(--c-line);
  transition:color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.pager__item:hover{color:var(--c-primary);box-shadow:inset 0 0 0 1px var(--c-line-hot)}
.pager__item.is-current{color:#04121A;background:linear-gradient(135deg,var(--c-primary-light),var(--c-primary-deep));box-shadow:0 0 0 1px rgba(53,224,214,.5),0 10px 24px -12px rgba(53,224,214,.8)}
.pager__note{font-size:13px;color:var(--c-text-3);margin-left:4px}

/* 核对要点 */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.stat-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--shadow-1);
  backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.stat-card:hover{transform:translateY(-4px);border-color:var(--c-line-hot);box-shadow:var(--shadow-2)}
.stat-card .num{font-size:40px;font-weight:700;color:var(--c-primary);line-height:1.1;letter-spacing:-.02em}
.stat-card .num small{font-size:12px;color:var(--c-text-3);font-weight:600;margin-left:6px;letter-spacing:.08em}
.stat-card h3{font-size:17px;margin:14px 0 8px}
.stat-card p{font-size:14px;color:var(--c-text-2)}

/* 流程 */
.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;counter-reset:flow}
.flow__item{
  position:relative;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:26px 22px 24px;box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.flow__item:hover{transform:translateY(-4px);border-color:var(--c-line-hot);box-shadow:var(--shadow-2)}
.flow__item::before{
  counter-increment:flow;content:"0" counter(flow);
  display:block;font-size:22px;font-weight:700;color:var(--c-accent);margin-bottom:12px;letter-spacing:.04em;
}
.flow__item h3{font-size:16.5px;margin-bottom:8px}
.flow__item p{font-size:14px;color:var(--c-text-2)}
.flow__line{height:1px;background:linear-gradient(90deg,rgba(53,224,214,.5),rgba(255,77,141,.35),transparent);margin:28px 0 0}

/* 场景列表 */
.rows{border-top:1px solid var(--c-line)}
.row{
  display:grid;grid-template-columns:180px minmax(0,1fr) auto;gap:20px;align-items:center;
  padding:20px 16px;border-bottom:1px solid var(--c-line);
  transition:background .2s var(--ease);
}
.row:hover{background:rgba(255,255,255,.055)}
.row__tag{font-size:13px;font-weight:600;color:var(--c-primary);letter-spacing:.06em}
.row h3{font-size:16.5px;font-weight:600}
.row h3 a{color:var(--c-text)}
.row:hover h3 a{color:var(--c-primary)}
.row p{font-size:13.5px;color:var(--c-text-3);margin-top:4px}
.row .arrow{color:var(--c-text-3);transition:transform .2s var(--ease),color .2s var(--ease)}
.row:hover .arrow{transform:translateX(4px);color:var(--c-primary)}

/* FAQ */
.faq{display:flex;flex-direction:column;gap:12px;max-width:900px;margin:0 auto}
.faq__item{
  position:relative;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);overflow:hidden;
  backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.faq__item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--c-primary);
  transform:scaleY(0);transform-origin:top;transition:transform .24s var(--ease);box-shadow:0 0 12px rgba(53,224,214,.7);
}
.faq__item.is-open{border-color:var(--c-line-hot)}
.faq__item.is-open::before{transform:scaleY(1)}
.faq__q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--c-text);
  min-height:44px;transition:color .2s var(--ease);
}
.faq__item.is-open .faq__q{color:var(--c-primary)}
.faq__icon{flex:0 0 22px;width:22px;height:22px;position:relative}
.faq__icon::before,.faq__icon::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:2px;
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.faq__icon::before{left:2px;right:2px;top:10px;height:2px}
.faq__icon::after{top:2px;bottom:2px;left:10px;width:2px}
.faq__item.is-open .faq__icon::after{transform:scaleY(0);opacity:0}
.faq__a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
.faq__a p{padding:0 22px 22px;font-size:14.5px;color:var(--c-text-2)}

/* CTA */
.cta{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background-image:linear-gradient(120deg,rgba(6,10,20,.94),rgba(11,18,36,.86)),url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center;
  border:1px solid var(--c-line-hot);
  padding:44px;box-shadow:var(--shadow-2);
  display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:28px;align-items:center;
  clip-path:polygon(12px 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%,0 12px);
}
.cta h2{font-size:clamp(22px,2.4vw,30px);display:flex;align-items:center;gap:14px}
.cta h2::before{content:"";width:4px;height:22px;border-radius:2px;background:var(--c-primary);box-shadow:0 0 12px rgba(53,224,214,.6)}
.cta p{margin-top:12px;color:var(--c-text-2);font-size:15px;max-width:560px}
.cta__actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}

/* 页脚 */
.site-footer{position:relative;margin-top:40px;border-top:1px solid transparent;background:rgba(6,10,20,.85);padding:64px 0 24px}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,224,214,.5),rgba(255,77,141,.45),transparent);
}
.footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:36px}
.footer__col h4{font-size:14px;color:var(--c-text);margin-bottom:14px;letter-spacing:.06em}
.footer__col p{font-size:13px;color:var(--c-text-3);line-height:1.9}
.footer__brand{margin-bottom:14px;display:inline-flex}
.footer__links{display:flex;flex-direction:column}
.footer__links a{
  display:flex;align-items:center;min-height:44px;font-size:13.5px;color:var(--c-text-2);
  border-bottom:1px dashed rgba(255,255,255,.06);transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.footer__links a:hover{color:var(--c-primary);padding-left:6px}
.footer__bar{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
  padding-top:20px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-text-3);
}

@media (max-width:1279px){
  .cat-layout{grid-template-columns:1fr;gap:28px}
  .toc{position:static;display:flex;flex-wrap:wrap;gap:8px;padding:14px;align-items:center}
  .toc h2{width:100%;border-bottom:0;padding:0 6px 6px;margin:0}
  .toc__nav{display:flex;flex-wrap:wrap;gap:8px}
  .toc__link{min-height:40px;border-radius:var(--r-pill);background:rgba(255,255,255,.04);box-shadow:inset 0 0 0 1px var(--c-line)}
  .toc__link::before{display:none}
  .toc__link i{display:none}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer__grid{grid-template-columns:1fr 1fr}
  .cta{grid-template-columns:1fr;padding:34px}
  .cta__actions{justify-content:flex-start}
}
@media (max-width:1023px){
  .nav{display:none}
  .burger{display:grid}
  .header__actions .btn--sm{display:none}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767px){
  :root{--header-h:56px}
  .container{padding:0 18px}
  .section{padding:56px 0}
  .section--tight{padding:44px 0}
  .cat-hero{padding:40px 0 34px;min-height:auto}
  .cat-card{grid-template-columns:1fr;gap:16px;padding:16px}
  .cat-card__media{aspect-ratio:16/10}
  .flow{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr}
  .row{grid-template-columns:1fr;gap:8px;padding:18px 12px}
  .row .arrow{display:none}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px}
  .footer__grid{grid-template-columns:1fr;gap:24px}
  .footer__bar{flex-direction:column;align-items:flex-start}
  .brand__text em{letter-spacing:.08em}
}
@media (max-width:520px){
  .btn{width:100%}
  .cta__actions{flex-direction:column;align-items:stretch}
  .pager__item{min-width:44px;padding:0 12px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .btn:hover,.cat-card:hover,.stat-card:hover,.flow__item:hover,.anchor-tag:hover{transform:none}
}

/* roulang page: category2 */
:root{
  --c-bg:#060A14;
  --c-bg-2:#0B1224;
  --c-surface:rgba(255,255,255,.045);
  --c-surface-2:rgba(255,255,255,.07);
  --c-line:rgba(120,200,220,.16);
  --c-line-hot:rgba(53,224,214,.45);
  --c-primary:#35E0D6;
  --c-primary-deep:#14B9AE;
  --c-primary-light:#7BF3EA;
  --c-accent:#FF4D8D;
  --c-blue:#4C8DFF;
  --c-text:#E8EFF8;
  --c-text-2:#A7B6CC;
  --c-text-3:#6C7C94;
  --c-ok:#34D399;
  --c-warn:#FBBF24;
  --c-err:#F87171;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --glow-primary:0 0 0 1px rgba(53,224,214,.35), 0 8px 28px -6px rgba(53,224,214,.45);
  --shadow-card:0 8px 24px -12px rgba(0,0,0,.6);
  --shadow-card-h:0 16px 40px -16px rgba(0,0,0,.75);
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-h:72px;
  --font-cn:system-ui,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(920px 540px at 50% -12%, rgba(53,224,214,.16), transparent 70%),
    radial-gradient(460px 340px at 95% 4%, rgba(255,77,141,.12), transparent 70%);
}
body::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.05;
  background-image:
    linear-gradient(rgba(120,200,220,.7) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,200,220,.7) 1px, transparent 1px);
  background-size:64px 64px;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(53,224,214,.3);}

body::-webkit-scrollbar{width:8px;height:8px;}
body::-webkit-scrollbar-track{background:#080d1a;border-radius:6px;}
body::-webkit-scrollbar-thumb{background:linear-gradient(180deg,var(--c-primary),var(--c-primary-deep));border-radius:6px;}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;position:relative;z-index:1;}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  height:var(--nav-h);
  display:flex;align-items:center;
  background:rgba(6,10,20,.72);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,224,214,.5),rgba(255,77,141,.5),transparent);
  opacity:0;transition:opacity .24s var(--ease);
}
.site-header.is-scrolled{background:rgba(6,10,20,.92);}
.site-header.is-scrolled::after{opacity:1;}
.header__inner{display:flex;align-items:center;gap:28px;width:100%;}

.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand__mark{
  width:38px;height:38px;border-radius:12px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:18px;color:#04121A;
  background:linear-gradient(135deg,var(--c-primary-light),var(--c-primary-deep));
  box-shadow:var(--glow-primary);
  letter-spacing:-.02em;
}
.brand__text{display:flex;flex-direction:column;line-height:1.15;}
.brand__text strong{font-size:17px;font-weight:800;letter-spacing:.01em;}
.brand__text em{font-style:normal;font-size:11.5px;color:var(--c-text-3);letter-spacing:.14em;}

.nav{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav__link{
  position:relative;display:inline-flex;align-items:center;
  padding:10px 14px;border-radius:10px;
  font-size:14.5px;font-weight:500;color:var(--c-text-2);
  transition:color .2s var(--ease);
}
.nav__link::after{
  content:"";position:absolute;left:50%;bottom:4px;height:2px;width:0;
  transform:translateX(-50%);
  background:linear-gradient(90deg,var(--c-primary),var(--c-primary-light));
  border-radius:2px;box-shadow:0 0 12px rgba(53,224,214,.8);
  transition:width .24s var(--ease);
}
.nav__link:hover{color:var(--c-primary);}
.nav__link:hover::after{width:70%;}
.nav__link.is-active{color:var(--c-primary);text-shadow:0 0 14px rgba(53,224,214,.55);}
.nav__link.is-active::after{width:70%;}

.nav__cta{
  display:inline-flex;align-items:center;gap:8px;
  margin-left:14px;padding:11px 20px;border-radius:var(--r-md);
  font-size:14.5px;font-weight:700;color:#04121A;
  background:linear-gradient(135deg,var(--c-primary-light),var(--c-primary));
  box-shadow:var(--glow-primary);
  transition:transform .2s var(--ease),filter .2s var(--ease),box-shadow .2s var(--ease);
}
.nav__cta:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(53,224,214,.5),0 14px 34px -8px rgba(53,224,214,.6);}
.nav__cta:active{transform:translateY(0);}

.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-line);border-radius:12px;
  background:var(--c-surface);cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-text);border-radius:2px;position:relative;transition:transform .24s var(--ease);}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-text);border-radius:2px;transition:transform .24s var(--ease);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle.is-open span{background:transparent;}
.nav-toggle.is-open span::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span::after{transform:translateY(-6px) rotate(-45deg);}

.drawer{
  position:fixed;inset:0;z-index:80;background:#060A14;padding:24px;
  display:flex;flex-direction:column;gap:8px;
  transform:translateY(-12px);opacity:0;visibility:hidden;
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
}
.drawer.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer__top{display:flex;align-items:center;justify-content:space-between;padding-bottom:20px;border-bottom:1px solid rgba(53,224,214,.28);}
.drawer__close{width:44px;height:44px;border-radius:12px;border:1px solid var(--c-line);background:var(--c-surface);font-size:20px;line-height:1;cursor:pointer;color:var(--c-text);}
.drawer__links{display:flex;flex-direction:column;margin-top:14px;}
.drawer__links a{
  min-height:56px;display:flex;align-items:center;
  font-size:17px;font-weight:600;color:var(--c-text-2);
  border-bottom:1px solid rgba(255,77,141,.18);
}
.drawer__links a.is-active{color:var(--c-primary);}
.drawer__cta{
  margin-top:22px;min-height:52px;display:flex;align-items:center;justify-content:center;
  border-radius:var(--r-md);font-weight:700;color:#04121A;
  background:linear-gradient(135deg,var(--c-primary-light),var(--c-primary));
  box-shadow:var(--glow-primary);
}

/* ============ hero ============ */
.cat-hero{
  position:relative;overflow:hidden;
  padding:76px 0 44px;
  background-image:linear-gradient(180deg,rgba(6,10,20,.78),rgba(6,10,20,.94)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--c-line);
}
.cat-hero__inner{position:relative;z-index:2;max-width:840px;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3);margin-bottom:20px;}
.crumb a{color:var(--c-text-3);transition:color .2s var(--ease);}
.crumb a:hover{color:var(--c-primary);}
.crumb span.sep{opacity:.6;}
.crumb span.now{color:var(--c-text-2);}
.cat-hero h1{
  font-size:clamp(28px,4.2vw,48px);font-weight:800;line-height:1.18;letter-spacing:-.02em;
}
.cat-hero h1 b{color:var(--c-primary);font-weight:800;}
.cat-hero__desc{margin-top:18px;font-size:16.5px;color:var(--c-text-2);max-width:660px;}
.cat-hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;border-radius:var(--r-md);
  font-size:15px;font-weight:700;cursor:pointer;border:0;
  transition:transform .2s var(--ease),filter .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.btn--primary{
  color:#04121A;background:linear-gradient(135deg,var(--c-primary-light),var(--c-primary));
  box-shadow:var(--glow-primary),inset 0 0 0 1px rgba(255,255,255,.35);
}
.btn--primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(53,224,214,.5),0 18px 40px -10px rgba(53,224,214,.6);}
.btn--primary:active{transform:translateY(0);}
.btn--ghost{color:var(--c-primary);background:transparent;box-shadow:inset 0 0 0 1px var(--c-line-hot);}
.btn--ghost:hover{background:rgba(53,224,214,.1);box-shadow:inset 0 0 0 1px rgba(53,224,214,.7);transform:translateY(-2px);}
.btn--ghost:active{transform:translateY(0);}

/* chip bar */
.chipbar{
  display:flex;gap:10px;overflow-x:auto;padding:18px 0 6px;
  scrollbar-width:thin;
}
.chipbar::-webkit-scrollbar{height:6px;}
.chipbar::-webkit-scrollbar-thumb{background:rgba(53,224,214,.45);border-radius:6px;}
.chipbar::-webkit-scrollbar-track{background:rgba(255,255,255,.05);border-radius:6px;}
.chip{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:8px;
  height:38px;padding:0 16px;border-radius:var(--r-pill);
  font-size:13.5px;font-weight:600;color:var(--c-text-2);
  background:var(--c-surface);border:1px solid var(--c-line);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.chip:hover{color:var(--c-primary);border-color:var(--c-line-hot);}
.chip.is-active{
  color:var(--c-primary);background:rgba(53,224,214,.12);
  border-color:var(--c-line-hot);box-shadow:0 0 0 1px rgba(53,224,214,.25),0 6px 20px -10px rgba(53,224,214,.6);
}

/* ============ sections ============ */
.section{padding:88px 0;}
.section--alt{background:var(--c-bg-2);}
.section__head{margin-bottom:38px;max-width:760px;}
.section__title{
  position:relative;padding-left:16px;
  font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.3;letter-spacing:-.01em;
}
.section__title::before{
  content:"";position:absolute;left:0;top:6px;width:4px;height:24px;border-radius:2px;
  background:linear-gradient(180deg,var(--c-primary),var(--c-primary-deep));
  box-shadow:0 0 14px rgba(53,224,214,.7);
}
.section__sub{margin-top:14px;font-size:15.5px;color:var(--c-text-2);}

.grid{display:grid;gap:24px;}
.grid--3{grid-template-columns:repeat(3,1fr);}
.grid--2{grid-template-columns:repeat(2,1fr);}

.card{
  position:relative;display:flex;flex-direction:column;
  padding:24px;border-radius:var(--r-lg);
  background:var(--c-surface);
  border:1px solid var(--c-line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:var(--c-line-hot);box-shadow:var(--shadow-card-h);background:var(--c-surface-2);}
.card__badge{
  align-self:flex-start;margin-bottom:14px;
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;
  color:var(--c-accent);background:rgba(255,77,141,.12);border:1px solid rgba(255,77,141,.38);
}
.card__badge--cyan{color:var(--c-primary);background:rgba(53,224,214,.1);border-color:rgba(53,224,214,.4);}
.card__title{font-size:18px;font-weight:600;line-height:1.45;}
.card__text{margin-top:10px;font-size:14.5px;color:var(--c-text-2);}
.card__meta{margin-top:auto;padding-top:16px;font-size:13px;color:var(--c-text-3);display:flex;align-items:center;justify-content:space-between;gap:12px;}
.card__arrow{
  width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  color:var(--c-primary);border:1px solid var(--c-line-hot);font-size:14px;
  transition:transform .24s var(--ease),background .24s var(--ease);
}
.card:hover .card__arrow{transform:translateX(4px);background:rgba(53,224,214,.12);}

.card__media{position:relative;overflow:hidden;border-radius:var(--r-md);aspect-ratio:16/10;background:linear-gradient(135deg,rgba(53,224,214,.08),rgba(255,77,141,.06));}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.card:hover .card__media img{transform:scale(1.03);}

/* 错落双卡（2/3 + 1/3） */
.split{display:grid;grid-template-columns:2fr 1fr;gap:24px;}
.split .card--wide{flex-direction:row;gap:22px;align-items:stretch;}
.split .card--wide .card__media{flex:0 0 38%;aspect-ratio:4/3;}
.split .card--wide .card__body{display:flex;flex-direction:column;flex:1 1 auto;}

/* 步骤 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step;}
.step{
  position:relative;padding:26px 22px;border-radius:var(--r-lg);
  background:var(--c-surface);border:1px solid var(--c-line);
  transition:border-color .24s var(--ease),transform .24s var(--ease),background .24s var(--ease);
}
.step:hover{border-color:var(--c-line-hot);transform:translateY(-4px);background:var(--c-surface-2);}
.step__num{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:12px;font-weight:800;font-size:15px;
  color:#04121A;background:linear-gradient(135deg,var(--c-primary-light),var(--c-primary));
  box-shadow:0 0 0 1px rgba(255,255,255,.28),0 8px 20px -8px rgba(53,224,214,.7);
}
.step h3{margin-top:16px;font-size:17px;font-weight:600;}
.step p{margin-top:8px;font-size:14px;color:var(--c-text-2);}

/* 瀑布卡片墙 */
.waterfall{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.waterfall > .wcard{grid-column:span 12;}
.waterfall > .wcard:nth-child(odd){grid-column:span 8;}
.waterfall > .wcard:nth-child(even){grid-column:span 4;}
.wcard{
  display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--r-lg);border:1px solid var(--c-line);
  background:var(--c-surface);box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.wcard:hover{transform:translateY(-4px);border-color:var(--c-line-hot);box-shadow:var(--shadow-card-h);}
.wcard__media{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(53,224,214,.1),rgba(255,77,141,.07));}
.wcard__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.wcard:hover .wcard__media img{transform:scale(1.03);}
.wcard:nth-child(odd) .wcard__media{aspect-ratio:16/9;}
.wcard:nth-child(even) .wcard__media{aspect-ratio:4/5;}
.wcard__body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1 1 auto;}
.wcard__body h3{font-size:18px;font-weight:600;line-height:1.45;}
.wcard:nth-child(odd) .wcard__body h3{font-size:21px;}
.wcard__body p{margin-top:10px;font-size:14.5px;color:var(--c-text-2);}
.wcard__tags{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 11px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;color:var(--c-blue);
  background:rgba(76,141,255,.1);border:1px solid rgba(76,141,255,.32);
}

/* 对照表 */
.table-wrap{
  overflow-x:auto;border-radius:var(--r-lg);border:1px solid var(--c-line);
  background:var(--c-surface);box-shadow:var(--shadow-card);
}
table.compare{width:100%;border-collapse:collapse;min-width:640px;font-size:14.5px;}
table.compare caption{
  caption-side:top;text-align:left;padding:20px 24px 0;font-size:13px;color:var(--c-text-3);
}
table.compare th,table.compare td{padding:16px 24px;text-align:left;border-bottom:1px solid var(--c-line);}
table.compare thead th{
  font-size:13.5px;font-weight:600;color:var(--c-primary);letter-spacing:.03em;
  background:rgba(53,224,214,.06);
}
table.compare tbody tr:nth-child(even){background:rgba(255,255,255,.03);}
table.compare tbody tr:last-child td{border-bottom:0;}
table.compare tbody tr{transition:background .2s var(--ease);}
table.compare tbody tr:hover{background:rgba(53,224,214,.07);}
table.compare td:first-child{color:var(--c-text);font-weight:600;}

/* 检查清单 */
.checklist{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;}
.checklist li{
  display:flex;gap:12px;align-items:flex-start;
  padding:18px 20px;border-radius:var(--r-md);
  background:var(--c-surface);border:1px solid var(--c-line);
  font-size:14.5px;color:var(--c-text-2);
  transition:border-color .24s var(--ease),background .24s var(--ease);
}
.checklist li:hover{border-color:var(--c-line-hot);background:var(--c-surface-2);}
.checklist li::before{
  content:"";flex:0 0 auto;width:8px;height:8px;margin-top:9px;border-radius:2px;
  background:var(--c-primary);box-shadow:0 0 10px rgba(53,224,214,.8);
}
.checklist li b{color:var(--c-text);font-weight:600;}

/* FAQ */
.faq{display:flex;flex-direction:column;gap:14px;max-width:900px;}
.faq__item{
  border-radius:var(--r-lg);border:1px solid var(--c-line);
  background:var(--c-surface);overflow:hidden;
  transition:border-color .24s var(--ease),background .24s var(--ease);
}
.faq__item.is-open{border-color:var(--c-line-hot);background:var(--c-surface-2);}
.faq__q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;background:transparent;border:0;cursor:pointer;
  text-align:left;font-size:16.5px;font-weight:600;color:var(--c-text);
  transition:color .2s var(--ease);
}
.faq__item.is-open .faq__q{color:var(--c-primary);}
.faq__q:hover{color:var(--c-primary);}
.faq__icon{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line-hot);color:var(--c-primary);
  transition:transform .24s var(--ease),background .24s var(--ease);
}
.faq__item.is-open .faq__icon{transform:rotate(180deg);background:rgba(53,224,214,.12);}
.faq__a{
  max-height:0;overflow:hidden;
  transition:max-height .24s var(--ease);
  border-left:3px solid transparent;
}
.faq__item.is-open .faq__a{border-left-color:var(--c-primary);}
.faq__a p{padding:0 24px 22px 24px;font-size:15px;color:var(--c-text-2);}

/* CTA 带 */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);border:1px solid var(--c-line-hot);
  background:linear-gradient(135deg,rgba(53,224,214,.1),rgba(255,77,141,.07)),rgba(11,18,36,.9);
  padding:46px 40px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
}
.cta-band::before{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(53,224,214,.28),transparent 70%);
}
.cta-band__text{position:relative;max-width:560px;}
.cta-band__text h2{font-size:clamp(20px,2.3vw,28px);font-weight:700;}
.cta-band__text p{margin-top:10px;font-size:15px;color:var(--c-text-2);}
.cta-band__actions{position:relative;display:flex;flex-wrap:wrap;gap:14px;}

/* ============ footer ============ */
.site-footer{
  position:relative;z-index:1;
  margin-top:20px;padding:64px 0 26px;
  background:var(--c-bg-2);
  border-top:1px solid transparent;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,224,214,.55),rgba(255,77,141,.55),transparent);
}
.footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
.footer__col h4{font-size:14px;font-weight:700;color:var(--c-text);letter-spacing:.04em;margin-bottom:18px;}
.footer__col p{margin-top:18px;font-size:13.5px;color:var(--c-text-3);line-height:1.8;}
.footer__brand{margin-bottom:4px;}
.footer__links{display:flex;flex-direction:column;gap:2px;}
.footer__links a{
  display:inline-flex;align-items:center;min-height:44px;
  font-size:14px;color:var(--c-text-2);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer__links a:hover{color:var(--c-primary);transform:translateX(3px);}
.footer__bar{
  margin-top:46px;padding-top:22px;
  border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--c-text-3);
}

/* ============ responsive ============ */
@media (max-width:1279px){
  .grid--3{grid-template-columns:repeat(2,1fr);}
  .split{grid-template-columns:1fr;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .waterfall > .wcard:nth-child(odd),
  .waterfall > .wcard:nth-child(even){grid-column:span 6;}
  .footer__grid{grid-template-columns:1.4fr 1fr 1fr;}
}
@media (max-width:1023px){
  .nav{display:none;}
  .nav__cta{display:none;}
  .nav-toggle{display:flex;margin-left:auto;}
  .header__inner{gap:16px;}
  .section{padding:64px 0;}
  .cat-hero{padding:56px 0 34px;}
}
@media (max-width:767px){
  :root{--nav-h:56px;}
  .container{padding:0 18px;}
  body{font-size:15.5px;}
  .grid--3,.grid--2{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .checklist{grid-template-columns:1fr;}
  .waterfall > .wcard:nth-child(odd),
  .waterfall > .wcard:nth-child(even){grid-column:span 12;}
  .wcard:nth-child(even) .wcard__media{aspect-ratio:16/10;}
  .split .card--wide{flex-direction:column;}
  .split .card--wide .card__media{flex:none;aspect-ratio:16/10;}
  .section{padding:52px 0;}
  .cat-hero__actions .btn{flex:1 1 100%;}
  .cta-band{padding:32px 22px;}
  .cta-band__actions .btn{flex:1 1 100%;}
  .footer__grid{grid-template-columns:1fr;gap:26px;}
  .footer__bar{flex-direction:column;}
  table.compare th,table.compare td{padding:14px 16px;}
}
@media (max-width:520px){
  .brand__text strong{font-size:15.5px;}
  .brand__text em{font-size:10.5px;letter-spacing:.1em;}
  .cat-hero h1{font-size:26px;}
  .faq__q{font-size:15.5px;padding:18px;}
  .faq__a p{padding:0 18px 20px 18px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
  .card:hover,.wcard:hover,.step:hover,.nav__cta:hover,.btn:hover{transform:none;}
}