/* roulang page: index */
:root{
  --lime:#A6E22E;
  --lime-2:#C9F265;
  --lime-deep:#4E7A12;
  --lime-soft:rgba(166,226,46,.14);
  --amber:#FF7A2B;
  --amber-soft:rgba(255,122,43,.14);
  --ink:#0B0C0E;
  --ink-2:#15171B;
  --ink-3:#1E2126;
  --sand:#F7F5EF;
  --white:#FFFFFF;
  --line:#E4E0D6;
  --text:#15171B;
  --muted:#6B6F76;
  --muted-2:#8E9299;
  --radius-card:14px;
  --radius-lg:18px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(11,12,14,.06);
  --shadow-2:0 10px 30px rgba(11,12,14,.10);
  --container:1240px;
  --side-w:236px;
  --sec-gap:96px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  background:var(--sand);
  color:var(--text);
  font-size:17px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .18s ease-out}
a:hover{color:var(--lime-deep)}
button,input,select,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.2}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:5px}

/* ============ 容器 ============ */
.cx{width:100%;max-width:var(--container);margin:0 auto;padding-left:40px;padding-right:40px}
.page-shell{margin-left:var(--side-w);min-height:100vh;background:var(--sand)}
.section{padding:var(--sec-gap) 0}
.section--tight{padding:64px 0}
.section--dark{background:var(--ink);color:#F2F1EC}

/* ============ 左侧竖导航 ============ */
.side-nav{
  position:fixed;left:0;top:0;bottom:0;width:var(--side-w);
  background:var(--ink);
  color:#EDEDE8;
  display:flex;flex-direction:column;
  padding:30px 22px 24px;
  z-index:1030;
  border-right:1px solid rgba(255,255,255,.06);
}
.side-nav__brand{display:flex;align-items:center;gap:11px;margin-bottom:40px}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;
  display:flex;align-items:center;justify-content:center;
  background:var(--lime);color:var(--ink);
  font-size:14px;font-weight:800;letter-spacing:.02em;
  border-radius:10px;
}
.brand-text{font-size:19px;font-weight:800;color:#fff;letter-spacing:-.01em}
.side-nav__menu{display:flex;flex-direction:column;gap:4px;flex:1 1 auto}
.side-link{
  position:relative;
  display:block;
  padding:12px 12px 12px 16px;
  font-size:16px;font-weight:600;
  color:rgba(237,237,232,.72);
  border-radius:8px;
  transition:color .18s ease-out,background .18s ease-out;
}
.side-link::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;background:var(--lime);border-radius:3px;
  transition:height .2s ease-out;
}
.side-link:hover{color:#fff;background:rgba(255,255,255,.05)}
.side-link.is-active{color:#fff;background:rgba(166,226,46,.08)}
.side-link.is-active::before{height:22px}
.side-nav__foot{margin-top:24px;display:flex;flex-direction:column;gap:16px}
.side-nav__copy{font-size:12px;color:rgba(237,237,232,.42);line-height:1.6;margin:0}
.side-cta{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--lime);color:var(--ink);
  font-size:14px;font-weight:700;
  padding:11px 16px;border-radius:var(--radius-btn);
  border:1px solid var(--lime);
  transition:filter .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out;
}
.side-cta:hover{color:var(--ink);filter:brightness(1.06);box-shadow:0 8px 20px rgba(166,226,46,.22);transform:translateY(-1px)}

/* ============ 移动端顶栏 ============ */
.top-bar{
  display:none;
  position:sticky;top:0;z-index:1040;
  align-items:center;justify-content:space-between;
  padding:12px 18px;
  background:var(--ink);
  border-bottom:1px solid rgba(255,255,255,.07);
}
.top-bar__brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px}
.hamburger{
  width:44px;height:40px;border-radius:var(--radius-btn);
  background:transparent;border:1px solid rgba(255,255,255,.22);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  cursor:pointer;padding:0;
}
.hamburger span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;transition:background .18s ease-out}
.hamburger:hover{border-color:var(--lime)}
.hamburger:hover span{background:var(--lime)}
.mobile-nav{background:var(--ink)!important;color:#F2F1EC;border:0!important;width:min(86vw,340px)}
.mobile-nav .offcanvas-header{padding:24px 24px 8px;border-bottom:1px solid rgba(255,255,255,.08)}
.mobile-nav .offcanvas-body{padding:18px 24px 32px}
.mobile-nav .m-link{
  display:block;padding:16px 4px;font-size:20px;font-weight:700;
  color:rgba(242,241,236,.82);border-bottom:1px solid rgba(255,255,255,.08);
}
.mobile-nav .m-link.is-active{color:var(--lime)}
.mobile-nav .m-link:hover{color:var(--lime)}
.btn-close-white{filter:invert(1) grayscale(1) brightness(2)}

/* ============ 按钮 ============ */
.btn-lime,.btn-ghost,.btn-ghost-dark{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  font-size:16px;font-weight:700;
  padding:15px 28px;border-radius:var(--radius-btn);
  border:1px solid transparent;cursor:pointer;
  transition:filter .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out,background .18s ease-out,border-color .18s ease-out,color .18s ease-out;
}
.btn-lime{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.btn-lime:hover{color:var(--ink);filter:brightness(1.06);box-shadow:inset 0 0 0 1px rgba(11,12,14,.14),0 12px 26px rgba(166,226,46,.28);transform:translateY(-1px)}
.btn-lime .arrow{transition:transform .18s ease-out}
.btn-lime:hover .arrow{transform:translateX(4px)}
.btn-ghost{background:transparent;color:var(--text);border-color:rgba(11,12,14,.22)}
.btn-ghost:hover{color:var(--text);border-color:var(--lime);background:rgba(166,226,46,.08);transform:translateY(-1px)}
.btn-ghost-dark{background:transparent;color:#F2F1EC;border-color:rgba(255,255,255,.28)}
.btn-ghost-dark:hover{color:#fff;border-color:var(--lime);background:rgba(166,226,46,.10);transform:translateY(-1px)}
.btn-xl{padding:19px 42px;font-size:18px;border-radius:12px}

/* ============ 标签 / 徽章 ============ */
.tag{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.04em;padding:6px 14px;border-radius:999px;background:var(--lime-soft);color:var(--lime-deep)}
.tag--dark{background:rgba(166,226,46,.16);color:var(--lime)}
.badge-amber{display:inline-flex;align-items:center;font-size:13px;font-weight:700;padding:5px 12px;border-radius:999px;background:var(--amber-soft);color:#B24A00}
.badge-plain{display:inline-flex;align-items:center;font-size:13px;font-weight:600;padding:5px 12px;border-radius:999px;background:rgba(11,12,14,.06);color:var(--muted)}

/* ============ 首屏 ============ */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background-color:var(--ink);
  background-image:linear-gradient(104deg,rgba(11,12,14,.95) 0%,rgba(11,12,14,.80) 46%,rgba(11,12,14,.52) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.hero::after{
  content:"";position:absolute;right:-150px;top:-160px;width:560px;height:560px;border-radius:50%;
  background:radial-gradient(circle,rgba(166,226,46,.32),rgba(166,226,46,0) 70%);
  animation:glowFloat 12s ease-in-out infinite alternate;pointer-events:none;
}
@keyframes glowFloat{from{transform:translateY(0)}to{transform:translateY(6px)}}
.hero__inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);gap:56px;align-items:center;padding-top:118px;padding-bottom:104px}
.hero__title{font-size:clamp(30px,4.4vw,56px);line-height:1.08;font-weight:800;margin:22px 0 18px;letter-spacing:-.02em}
.hero__title em{font-style:normal;color:var(--lime)}
.hero__sub{font-size:19px;font-weight:600;color:rgba(255,255,255,.92);margin-bottom:12px}
.hero__desc{font-size:16px;color:rgba(255,255,255,.68);max-width:600px;line-height:1.9}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero__panel{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius-lg);
  padding:26px;
  backdrop-filter:blur(2px);
}
.hero__panel h3{font-size:17px;color:#fff;margin-bottom:6px}
.hero__panel .panel-note{font-size:13px;color:rgba(255,255,255,.55);margin-bottom:20px}
.panel-row{display:flex;justify-content:space-between;align-items:baseline;font-size:14px;color:rgba(255,255,255,.72);padding:10px 0;border-bottom:1px solid rgba(255,255,255,.09)}
.panel-row:last-of-type{border-bottom:0}
.panel-row b{font-size:17px;color:var(--lime)}
.hero__panel .mini-btn{width:100%;margin-top:18px;padding:12px 18px;font-size:15px}

/* ============ 数据条 ============ */
.stat-bar{background:var(--white);border-bottom:1px solid var(--line)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat-cell{padding:34px 26px;border-right:1px solid var(--line);text-align:left}
.stat-cell:last-child{border-right:0}
.stat-cell b{display:block;font-size:clamp(26px,2.6vw,34px);font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.stat-cell span{display:block;font-size:13px;color:var(--muted);margin-top:4px}

/* ============ 通用标题 ============ */
.sec-head{max-width:720px;margin-bottom:44px}
.sec-head h2{font-size:clamp(24px,2.6vw,36px);line-height:1.2;margin:16px 0 14px}
.sec-head p{font-size:16px;color:var(--muted)}
.sec-head--dark h2{color:#fff}
.sec-head--dark p{color:rgba(255,255,255,.62)}

/* ============ 玩法流程 ============ */
.flow-list{border-top:1px solid var(--line)}
.flow-row{display:flex;gap:36px;align-items:center;padding:40px 0;border-bottom:1px solid var(--line)}
.flow-row__no{order:1;flex:0 0 76px;font-size:38px;font-weight:800;color:rgba(11,12,14,.16);font-variant-numeric:tabular-nums;line-height:1}
.flow-row__body{order:2;flex:1 1 auto;min-width:0}
.flow-row__body h3{font-size:21px;margin-bottom:10px}
.flow-row__body p{font-size:16px;color:var(--muted);max-width:620px}
.flow-row__media{order:3;flex:0 0 340px}
.flow-row--rev .flow-row__media{order:2}
.flow-row--rev .flow-row__body{order:3}
.flow-row__media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--radius-card);border:1px solid var(--line);
}
.dot-list{margin-top:14px;display:flex;flex-wrap:wrap;gap:10px}
.dot-list li{
  font-size:13px;color:var(--text);font-weight:600;
  background:rgba(11,12,14,.045);border:1px solid var(--line);
  padding:6px 13px;border-radius:999px;
}

/* ============ 奖励栅格 ============ */
.reward-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:24px}
.reward-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:box-shadow .18s ease-out,transform .18s ease-out;
  display:flex;flex-direction:column;
}
.reward-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.reward-card--big{grid-row:span 2}
.reward-card__media{position:relative;overflow:hidden}
.reward-card__media img{width:100%;height:100%;object-fit:cover}
.reward-card--big .reward-card__media{aspect-ratio:16/9}
.reward-card:not(.reward-card--big) .reward-card__media{aspect-ratio:16/9}
.reward-card__media .badge-amber{position:absolute;top:14px;left:14px}
.reward-card__body{padding:24px 24px 26px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto}
.reward-card__body h3{font-size:19px}
.reward-card__body p{font-size:15px;color:var(--muted)}
.reward-card__body .go{
  margin-top:auto;display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:700;color:var(--lime-deep);
}
.reward-card__body .go:hover{color:var(--ink)}
.reward-card__body .go:hover .arrow{transform:translateX(4px)}
.reward-card__body .go .arrow{transition:transform .18s ease-out}

/* ============ 任务进度 ============ */
.task-wrap{
  background-color:var(--ink);
  background-image:linear-gradient(120deg,rgba(11,12,14,.95),rgba(11,12,14,.88)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.step-track{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:40px}
.step-item{
  border:1px solid rgba(255,255,255,.16);border-radius:var(--radius-card);
  padding:22px 22px 24px;background:rgba(255,255,255,.03);
  transition:border-color .18s ease-out,background .18s ease-out;
}
.step-item:hover{border-color:rgba(166,226,46,.5);background:rgba(166,226,46,.06)}
.step-item b{display:block;font-size:27px;font-variant-numeric:tabular-nums;color:rgba(255,255,255,.34);margin-bottom:12px}
.step-item strong{display:block;font-size:17px;color:#fff;margin-bottom:6px}
.step-item span{font-size:14px;color:rgba(255,255,255,.58)}
.step-item.is-done{border-color:rgba(166,226,46,.55);background:rgba(166,226,46,.10)}
.step-item.is-done b{color:var(--lime)}
.progress-block{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px;align-items:center}
.progress-track{height:10px;background:rgba(255,255,255,.13);border-radius:999px;overflow:hidden}
.progress-fill{height:100%;width:0;border-radius:999px;background:linear-gradient(90deg,var(--lime),var(--lime-2));transition:width .6s ease-out}
.progress-text{font-size:15px;color:rgba(255,255,255,.72);text-align:right;white-space:nowrap}
.progress-text b{font-size:24px;color:var(--lime);font-variant-numeric:tabular-nums}
.progress-note{margin-top:16px;font-size:13px;color:rgba(255,255,255,.5)}

/* ============ 图文说明 ============ */
.split{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:56px;align-items:center}
.split__media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-lg);border:1px solid var(--line)}
.split__body h2{font-size:clamp(23px,2.4vw,32px);margin-bottom:18px}
.split__body p{font-size:16px;color:var(--muted);margin-bottom:14px}
.mini-list{margin-top:22px;display:grid;gap:12px}
.mini-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px}
.mini-list li i{
  flex:0 0 8px;width:8px;height:8px;border-radius:2px;background:var(--lime);margin-top:11px;
}
.mini-list li span{color:var(--text)}
.mini-list li em{font-style:normal;color:var(--muted);display:block;font-size:14px}

/* ============ 最新信息 ============ */
.news-head{display:flex;flex-wrap:wrap;gap:20px;align-items:flex-end;justify-content:space-between;margin-bottom:38px}
.news-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.news-card{
  display:flex;gap:20px;
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:18px;box-shadow:var(--shadow-1);
  transition:box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
}
.news-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:rgba(166,226,46,.6)}
.news-card__thumb{flex:0 0 132px;border-radius:10px;overflow:hidden;border:1px solid var(--line)}
.news-card__thumb img{width:100%;height:100%;object-fit:cover;aspect-ratio:1/1}
.news-card__body{min-width:0;display:flex;flex-direction:column;gap:8px}
.news-card__meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--muted)}
.news-card__body h3{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card__body p{font-size:14px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.empty-state{
  grid-column:1/-1;text-align:center;padding:64px 24px;
  background:var(--white);border:1px dashed var(--line);border-radius:var(--radius-card);
}
.empty-state p{color:var(--muted);margin-bottom:18px}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px}
.accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)}
.accordion-button{
  background:transparent!important;box-shadow:none!important;color:var(--text);
  font-size:18px;font-weight:700;padding:24px 0;
  display:flex;justify-content:space-between;align-items:center;gap:20px;
}
.accordion-button:not(.collapsed){color:var(--text)}
.accordion-button::after{display:none}
.faq-plus{position:relative;flex:0 0 16px;width:16px;height:16px}
.faq-plus::before,.faq-plus::after{content:"";position:absolute;background:var(--text);border-radius:2px;transition:transform .22s ease-out,background .22s ease-out}
.faq-plus::before{left:0;top:7px;width:16px;height:2px}
.faq-plus::after{left:7px;top:0;width:2px;height:16px}
.accordion-button:not(.collapsed) .faq-plus::before{background:var(--lime-deep)}
.accordion-button:not(.collapsed) .faq-plus::after{transform:scaleY(0);background:var(--lime-deep)}
.accordion-body{padding:0 0 26px;font-size:16px;color:var(--muted);max-width:760px}

/* ============ 底部 CTA ============ */
.cta-bar{
  background-color:var(--ink);
  background-image:radial-gradient(circle at 18% 20%,rgba(166,226,46,.18),rgba(166,226,46,0) 55%);
  color:#fff;border-radius:var(--radius-lg);
  padding:56px 40px;text-align:center;
}
.cta-bar h2{font-size:clamp(24px,2.7vw,38px);margin-bottom:26px}
.cta-bar .btn-lime{margin:0 auto}

/* ============ 页脚 ============ */
.site-foot{background:var(--ink);color:rgba(242,241,236,.72);padding:72px 0 0;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.foot-brand{display:flex;align-items:center;gap:11px;margin-bottom:18px}
.foot-brand .brand-text{font-size:19px}
.foot-col p{font-size:14px;line-height:1.9;color:rgba(242,241,236,.58)}
.foot-col h4{font-size:15px;color:#fff;margin-bottom:18px;letter-spacing:0}
.foot-col ul{display:grid;gap:11px}
.foot-col ul a{font-size:14px;color:rgba(242,241,236,.66)}
.foot-col ul a:hover{color:var(--lime)}
.foot-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.09);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;
  font-size:13px;color:rgba(242,241,236,.45);
}
.foot-bottom a{color:rgba(242,241,236,.62)}
.foot-bottom a:hover{color:var(--lime)}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease-out,transform .5s ease-out}
.reveal.is-in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  :root{--side-w:200px;--sec-gap:72px}
  .cx{padding-left:28px;padding-right:28px}
  .hero__inner{grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:36px}
  .flow-row__media{flex:0 0 280px}
}
@media (max-width:991.98px){
  :root{--sec-gap:56px}
  .side-nav{display:none}
  .top-bar{display:flex}
  .page-shell{margin-left:0}
  .hero__inner{grid-template-columns:1fr;padding-top:72px;padding-bottom:64px}
  .hero{max-height:none}
  .hero__panel{max-width:520px}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .stat-cell{border-bottom:1px solid var(--line)}
  .stat-cell:nth-child(2n){border-right:0}
  .stat-cell:nth-last-child(-n+2){border-bottom:0}
  .flow-row{flex-direction:column;align-items:flex-start;gap:20px}
  .flow-row__no,.flow-row__body,.flow-row--rev .flow-row__body{order:1}
  .flow-row__media,.flow-row--rev .flow-row__media{order:2;flex:0 0 auto;width:100%}
  .flow-row__media img{aspect-ratio:16/9}
  .reward-grid{grid-template-columns:1fr}
  .reward-card--big{grid-row:auto}
  .step-track{grid-template-columns:1fr}
  .split{grid-template-columns:1fr;gap:32px}
  .news-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-bar{padding:44px 26px}
}
@media (max-width:575.98px){
  .cx{padding-left:18px;padding-right:18px}
  body{font-size:16px}
  .hero__cta{flex-direction:column;align-items:stretch}
  .hero__cta .btn-lime,.hero__cta .btn-ghost-dark{width:100%}
  .stat-grid{grid-template-columns:1fr}
  .stat-cell{border-right:0!important;border-bottom:1px solid var(--line)}
  .stat-cell:last-child{border-bottom:0}
  .news-card{flex-direction:column}
  .news-card__thumb{flex:0 0 auto}
  .news-card__thumb img{aspect-ratio:16/9}
  .progress-block{grid-template-columns:1fr}
  .progress-text{text-align:left}
  .foot-grid{grid-template-columns:1fr}
  .btn-xl{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --lime:#A6E22E;
  --lime-deep:#5B8B12;
  --lime-soft:rgba(166,226,46,.12);
  --amber:#FF7A2B;
  --ink:#0B0C0E;
  --ink-2:#15171B;
  --ink-3:#24272D;
  --paper:#F7F5EF;
  --card:#FFFFFF;
  --line:#E4E0D6;
  --line-soft:#EFECE3;
  --text:#22252A;
  --muted:#6E7076;
  --muted-2:#9A9C9F;
  --r-card:14px;
  --r-lg:18px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(11,12,14,.06);
  --shadow-2:0 10px 30px rgba(11,12,14,.10);
  --nav-w:236px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  --ease:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background:var(--paper);
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;color:var(--ink);}
p{margin:0;}
ul,ol{margin:0;}
::selection{background:var(--lime);color:var(--ink);}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}

/* 容器 */
.cx{width:100%;max-width:1240px;margin:0 auto;padding-left:40px;padding-right:40px;}

/* 左侧竖向导航 */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
  background:var(--ink-2);
  border-right:1px solid rgba(255,255,255,.06);
  display:flex;flex-direction:column;gap:26px;
  padding:26px 18px 22px;
  overflow-y:auto;
  z-index:1030;
}
.side-brand{display:flex;align-items:center;gap:10px;color:#FFFFFF;font-weight:800;letter-spacing:-.01em;}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:9px;
  background:var(--lime);color:var(--ink);
  display:grid;place-items:center;font-size:13px;font-weight:800;letter-spacing:.02em;
}
.brand-text{font-size:17px;}
.side-nav__label{
  font-size:11.5px;letter-spacing:.16em;color:rgba(237,237,232,.38);
  padding-left:14px;margin-bottom:8px;
}
.side-nav__menu{display:flex;flex-direction:column;gap:4px;}
.side-link{
  position:relative;display:block;
  padding:11px 14px;border-radius:9px;
  font-size:15px;color:rgba(237,237,232,.72);
  transition:background var(--ease),color var(--ease);
}
.side-link::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;border-radius:2px;background:var(--lime);
  transition:height var(--ease);
}
.side-link:hover{background:rgba(255,255,255,.06);color:#FFFFFF;}
.side-link.is-active{background:rgba(166,226,46,.10);color:#FFFFFF;font-weight:600;}
.side-link.is-active::before{height:58%;}
.side-cta{
  margin-top:auto;display:flex;flex-direction:column;gap:10px;
  padding-top:18px;border-top:1px solid rgba(255,255,255,.08);
}
.side-cta p{font-size:12.5px;line-height:1.7;color:rgba(237,237,232,.45);}
.side-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 14px;border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.18);color:#FFFFFF;
  font-size:14px;font-weight:600;
  transition:border-color var(--ease),background var(--ease),color var(--ease);
}
.side-btn:hover{border-color:var(--lime);color:var(--lime);background:rgba(166,226,46,.08);}
.side-foot{font-size:12px;line-height:1.7;color:rgba(237,237,232,.35);}

/* 移动端顶栏 */
.mobile-bar{
  display:none;align-items:center;justify-content:space-between;
  gap:12px;padding:12px 18px;
  background:var(--ink-2);position:sticky;top:0;z-index:1035;
  border-bottom:1px solid rgba(255,255,255,.07);
}
.burger{
  width:42px;height:42px;border-radius:10px;
  border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.04);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  cursor:pointer;padding:0;transition:border-color var(--ease),background var(--ease);
}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:#EDEDE8;}
.burger:hover{border-color:var(--lime);background:rgba(166,226,46,.10);}

/* 抽屉 */
.drawer{background:var(--ink-2)!important;color:#EDEDE8;width:82%!important;max-width:340px;border-right:1px solid rgba(255,255,255,.08)!important;}
.drawer .offcanvas-header{border-bottom:1px solid rgba(255,255,255,.08);padding:18px 18px;}
.drawer .offcanvas-body{padding:20px 18px 26px;display:flex;flex-direction:column;gap:22px;}
.drawer .side-link{font-size:17px;padding:15px 16px;}
.drawer-close{
  width:38px;height:38px;border-radius:10px;border:1px solid rgba(255,255,255,.18);
  background:transparent;color:#EDEDE8;font-size:20px;line-height:1;
  display:grid;place-items:center;cursor:pointer;transition:border-color var(--ease),color var(--ease);
}
.drawer-close:hover{border-color:var(--lime);color:var(--lime);}

/* 主内容区 */
.main-wrap{
  margin-left:var(--nav-w);
  min-height:100vh;
  display:flex;flex-direction:column;
  background:var(--paper);
}
.page-body{flex:1 1 auto;padding-top:26px;padding-bottom:80px;}

/* 面包屑 */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:9px;
  font-size:13.5px;color:var(--muted);margin-bottom:20px;
}
.crumbs a{color:var(--muted);transition:color var(--ease);}
.crumbs a:hover{color:var(--lime-deep);}
.crumbs .sep{color:#C9C5B9;}
.crumbs .cur{color:#8A8C91;}

/* 文章外壳 */
.article-shell{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-1);
  padding:44px 48px 48px;
  max-width:980px;
}
.article-head{padding-bottom:24px;border-bottom:1px solid var(--line);margin-bottom:30px;}
.art-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:var(--r-pill);
  background:var(--lime-soft);border:1px solid rgba(166,226,46,.45);
  color:#42630A;font-size:12.5px;font-weight:700;letter-spacing:.03em;
}
.article-title{
  font-size:clamp(26px,3.1vw,40px);
  line-height:1.28;
  margin:16px 0 14px;
  letter-spacing:-.02em;
}
.meta-line{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13.5px;color:var(--muted);
}
.meta-line .dot{width:3px;height:3px;border-radius:50%;background:#C9C5B9;}
.meta-line b{font-weight:600;color:#5C5F65;}

/* 封面 */
.article-cover{
  margin:0 0 34px;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);aspect-ratio:16/9;background:var(--ink-3);
}
.article-cover img{width:100%;height:100%;object-fit:cover;}

/* 正文排版 */
.article-content{font-size:17px;line-height:1.9;color:#25282D;max-width:820px;}
.article-content p{margin:0 0 1.1em;}
.article-content h2{
  position:relative;
  font-size:clamp(21px,2.2vw,26px);
  line-height:1.4;font-weight:800;
  margin:1.9em 0 .75em;padding-left:15px;
  letter-spacing:-.01em;
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;
  width:3px;border-radius:2px;background:var(--lime);
}
.article-content h3{font-size:19px;line-height:1.5;margin:1.55em 0 .6em;}
.article-content h4{font-size:17px;margin:1.3em 0 .5em;}
.article-content ul,.article-content ol{padding-left:1.35em;margin:0 0 1.1em;}
.article-content li{margin:.4em 0;}
.article-content a{color:var(--lime-deep);text-decoration:underline;text-underline-offset:3px;}
.article-content a:hover{color:#3C5C06;}
.article-content strong{font-weight:700;color:var(--ink);}
.article-content blockquote{
  margin:1.5em 0;padding:16px 22px;
  background:#FBFAF5;border-left:3px solid var(--lime);
  border-radius:0 10px 10px 0;color:#3B3E43;
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content img{
  max-width:100%;height:auto;margin:1.6em auto;
  border-radius:var(--r-card);border:1px solid var(--line);
}
.article-content figure{margin:1.6em 0;}
.article-content figcaption,.article-content .caption{
  text-align:center;font-size:13.5px;color:var(--muted-2);margin-top:10px;
}
.article-content table{
  width:100%;border-collapse:collapse;margin:1.5em 0;font-size:15.5px;
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
}
.article-content th,.article-content td{border:1px solid var(--line);padding:11px 14px;text-align:left;}
.article-content thead th{background:#FBFAF5;font-weight:700;color:var(--ink);}
.article-content tbody tr:nth-child(even){background:#FCFBF7;}
.article-content code{
  background:#F1EFE6;padding:2px 6px;border-radius:6px;font-size:.9em;
  font-family:ui-monospace,Menlo,Consolas,monospace;
}
.article-content hr{border:0;border-top:1px solid var(--line);margin:2em 0;}

/* 空态 */
.empty-block{
  text-align:center;padding:54px 24px;
  border:1px dashed var(--line);border-radius:var(--r-card);background:#FCFBF7;
}
.empty-block .empty-title{font-size:19px;font-weight:800;color:var(--ink);margin-bottom:10px;}
.empty-block .empty-desc{font-size:15px;color:var(--muted);max-width:420px;margin:0 auto 22px;line-height:1.85;}

/* 按钮 */
.btn-lime{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);
  background:var(--lime);color:var(--ink);
  font-size:15px;font-weight:700;border:1px solid transparent;
  box-shadow:var(--shadow-1);
  transition:filter var(--ease),box-shadow var(--ease),transform var(--ease);
}
.btn-lime:hover{
  filter:brightness(1.06);
  box-shadow:0 0 0 1px rgba(166,226,46,.6),var(--shadow-2);
  transform:translateY(-2px);
}
.btn-lime .arrow{transition:transform var(--ease);}
.btn-lime:hover .arrow{transform:translateX(4px);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 20px;border-radius:var(--r-btn);
  background:transparent;border:1px solid var(--line);color:var(--ink);
  font-size:15px;font-weight:600;
  transition:border-color var(--ease),background var(--ease),color var(--ease),transform var(--ease);
}
.btn-ghost:hover{border-color:var(--lime);background:var(--lime-soft);transform:translateY(-2px);color:var(--ink);}

/* 文末 */
.article-foot{
  margin-top:44px;padding-top:26px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
}
.article-foot .foot-hint{font-size:13.5px;color:var(--muted);}
.article-foot .foot-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* 继续查看 */
.more-sec{margin-top:64px;}
.sec-head{margin-bottom:24px;}
.sec-head h2{font-size:clamp(22px,2.2vw,28px);line-height:1.3;}
.sec-head p{margin-top:10px;font-size:15px;color:var(--muted);}
.more-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;}
.more-card{
  display:block;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.more-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#D9D4C6;}
.more-pic{aspect-ratio:16/10;overflow:hidden;background:var(--ink-3);box-shadow:inset 0 0 0 1px rgba(11,12,14,.08);}
.more-pic img{width:100%;height:100%;object-fit:cover;transition:transform 320ms ease-out;}
.more-card:hover .more-pic img{transform:scale(1.03);}
.more-body{padding:20px 22px 24px;}
.chip{
  display:inline-block;padding:4px 11px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:700;letter-spacing:.03em;
  background:var(--lime-soft);color:#42630A;border:1px solid rgba(166,226,46,.4);
}
.chip.is-amber{background:rgba(255,122,43,.12);color:#B24A0A;border-color:rgba(255,122,43,.38);}
.more-body h3{font-size:18px;margin:13px 0 8px;line-height:1.45;}
.more-body p{font-size:14.5px;color:var(--muted);line-height:1.8;}

/* 页脚 */
.site-foot{background:var(--ink-2);color:rgba(237,237,232,.72);margin-top:auto;padding-top:60px;}
.foot-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px;
  padding-bottom:42px;
}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;color:#FFFFFF;}
.foot-brand .brand-text{font-size:16px;font-weight:700;}
.foot-col p{font-size:14px;line-height:1.85;color:rgba(237,237,232,.62);max-width:320px;}
.foot-col h4{font-size:14px;color:#FFFFFF;margin-bottom:16px;font-weight:700;letter-spacing:.02em;}
.foot-col ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:10px;}
.foot-col a{font-size:14px;color:rgba(237,237,232,.68);transition:color var(--ease);}
.foot-col a:hover{color:var(--lime);}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:20px 0 26px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(237,237,232,.48);
}
.foot-bottom a{color:rgba(237,237,232,.58);transition:color var(--ease);}
.foot-bottom a:hover{color:var(--lime);}

/* 动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 480ms ease-out,transform 480ms ease-out;}
.reveal.is-in{opacity:1;transform:none;}

/* 响应式 */
@media (max-width:1199.98px){
  :root{--nav-w:200px;}
  .cx{padding-left:28px;padding-right:28px;}
  .article-shell{padding:36px 32px 38px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:991.98px){
  .side-nav{display:none;}
  .main-wrap{margin-left:0;}
  .mobile-bar{display:flex;}
  .page-body{padding-top:22px;padding-bottom:64px;}
  .article-shell{padding:28px 22px 30px;}
  .more-grid{grid-template-columns:1fr;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .cx{padding-left:22px;padding-right:22px;}
  .article-content{font-size:16px;line-height:1.88;}
  .foot-grid{grid-template-columns:1fr;gap:26px;}
  .foot-bottom{flex-direction:column;gap:8px;}
  .sec-head h2{font-size:22px;}
}
@media (max-width:575.98px){
  .cx{padding-left:18px;padding-right:18px;}
  .article-title{font-size:25px;}
  .article-shell{padding:22px 16px 24px;border-radius:var(--r-card);}
  .art-tag{font-size:12px;}
  .article-foot .foot-actions{width:100%;}
  .article-foot .foot-actions .btn-lime,
  .article-foot .foot-actions .btn-ghost{width:100%;justify-content:center;}
  .foot-grid{gap:24px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --ink:#0B0C0E;
  --ink-soft:#15171B;
  --ink-line:#2A2E35;
  --sand:#F7F5EF;
  --card:#FFFFFF;
  --line:#E4E0D6;
  --lime:#A6E22E;
  --lime-deep:#8CC41C;
  --amber:#FF7A2B;
  --text:#22252B;
  --muted:#6B7078;
  --muted-2:#8A9099;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:18px;
  --sh1:0 1px 2px rgba(11,12,14,.06);
  --sh2:0 10px 30px rgba(11,12,14,.10);
  --side-w:236px;
  --pad-x:40px;
  --gap-sec:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--text);
  background:var(--sand);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none}
button{font:inherit}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;color:var(--ink);line-height:1.2}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
strong{font-weight:700}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
::selection{background:rgba(166,226,46,.35)}

.cx{width:100%;max-width:1240px;margin:0 auto;padding:0 var(--pad-x);box-sizing:border-box}

/* ============ 左侧竖向导航 ============ */
.side{
  position:fixed;top:0;left:0;bottom:0;width:var(--side-w);
  background:var(--ink);color:#E9EAE7;
  display:flex;flex-direction:column;
  padding:30px 22px 24px;z-index:1040;overflow-y:auto;
}
.brand{display:flex;align-items:center;gap:10px;margin-bottom:34px}
.brand-mark{
  width:38px;height:38px;border-radius:10px;background:var(--lime);color:var(--ink);
  display:grid;place-items:center;font-weight:800;font-size:15px;flex-shrink:0;
}
.brand-text{font-weight:800;font-size:17px;color:#fff;letter-spacing:-.01em}
.side-nav__menu{display:flex;flex-direction:column;gap:4px}
.side-link{
  position:relative;display:block;padding:11px 12px 11px 16px;border-radius:var(--r-sm);
  color:#B9BCC2;font-size:15px;transition:color .18s ease,background-color .18s ease;
}
.side-link:hover{color:#fff;background:rgba(255,255,255,.05)}
.side-link.is-active{color:#fff;background:rgba(166,226,46,.08)}
.side-link.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:2px;background:var(--lime);
}
.side-foot{margin-top:auto;padding-top:22px;border-top:1px solid var(--ink-line);font-size:12.5px;color:#7E838B;line-height:1.75}
.side-cta{
  display:inline-flex;align-items:center;gap:6px;margin-bottom:14px;padding:9px 15px;
  border-radius:var(--r-sm);border:1px solid rgba(166,226,46,.45);color:var(--lime);
  font-size:13.5px;font-weight:600;transition:background-color .18s ease;
}
.side-cta:hover{background:rgba(166,226,46,.1)}

.shell{margin-left:var(--side-w);min-height:100vh;background:var(--sand)}

/* ============ 移动端顶栏 ============ */
.topbar{
  display:none;position:sticky;top:0;z-index:1030;
  background:rgba(11,12,14,.97);padding:12px 18px;
  align-items:center;justify-content:space-between;
}
.topbar .brand{margin-bottom:0}
.topbar .brand-mark{width:32px;height:32px;border-radius:8px;font-size:13px}
.topbar .brand-text{font-size:15.5px}
.burger{
  width:42px;height:42px;border-radius:var(--r-sm);border:1px solid rgba(255,255,255,.22);
  background:transparent;display:grid;place-items:center;gap:0;padding:11px 10px;
}
.burger span{display:block;width:20px;height:2px;background:#fff;border-radius:2px;margin:2.5px 0}

.drawer{background:var(--ink);color:#EDEDEA;width:82%;max-width:340px;border:0}
.drawer .offcanvas-header{border-bottom:1px solid var(--ink-line);padding:20px 22px}
.drawer .offcanvas-body{padding:26px 18px}
.drawer .side-link{font-size:18px;padding:15px 14px 15px 18px;border-radius:12px}
.drawer .side-foot{border-top:1px solid var(--ink-line);color:#7E838B}

/* ============ 按钮 ============ */
.btn-main,.btn-ghost,.btn-line{
  display:inline-flex;align-items:center;gap:8px;justify-content:center;
  padding:13px 24px;border-radius:var(--r-sm);font-size:15.5px;font-weight:700;
  cursor:pointer;border:1px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease,filter .18s ease;
}
.btn-main{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.btn-main:hover{filter:brightness(1.06);box-shadow:inset 0 0 0 1px rgba(11,12,14,.22),var(--sh2);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.34)}
.btn-ghost:hover{border-color:var(--lime);color:var(--lime);background:rgba(166,226,46,.08);transform:translateY(-2px)}
.btn-line{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-line:hover{border-color:var(--lime);background:rgba(166,226,46,.08);transform:translateY(-2px)}
.btn-xl{padding:17px 40px;font-size:17px;border-radius:12px}
.arw{transition:transform .18s ease;display:inline-block}
.btn-main:hover .arw,.btn-line:hover .arw,.btn-ghost:hover .arw{transform:translateX(4px)}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;color:#fff;background:#0B0C0E;
  background-image:linear-gradient(100deg,rgba(11,12,14,.95) 0%,rgba(11,12,14,.78) 46%,rgba(11,12,14,.42) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid #23262C;
}
.hero::after{
  content:"";position:absolute;right:-70px;top:16%;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(166,226,46,.26),transparent 68%);
  animation:floaty 9s ease-in-out infinite;pointer-events:none;
}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
.hero__inner{position:relative;z-index:2;padding:74px 0 76px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:#9AA0A8;margin-bottom:22px}
.crumbs a{color:#C9CDD3;border-bottom:1px solid transparent;transition:color .18s ease,border-color .18s ease}
.crumbs a:hover{color:var(--lime);border-color:var(--lime)}
.crumbs span.sep{color:#4C5158}
.crumbs span.now{color:#8A9099}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:18px;
  padding:6px 14px;border-radius:999px;background:rgba(166,226,46,.14);
  color:var(--lime);font-size:13px;font-weight:600;letter-spacing:.02em;
}
.hero h1{
  color:#fff;font-size:clamp(30px,4.2vw,54px);line-height:1.1;max-width:15em;
  margin-bottom:20px;
}
.hero__sub{font-size:clamp(17px,1.5vw,20px);color:#DDE1E6;font-weight:600;margin-bottom:14px}
.hero__desc{max-width:640px;color:#A9AEB6;font-size:15.5px;margin-bottom:32px}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px}

/* ============ 主体两列：左目录 + 右内容 ============ */
.layout{
  display:grid;grid-template-columns:250px minmax(0,1fr);gap:48px;
  padding:72px 0 0;
}
.toc{position:sticky;top:28px;align-self:start}
.toc__title{
  font-size:12.5px;letter-spacing:.14em;color:var(--muted-2);
  text-transform:uppercase;font-weight:700;margin-bottom:16px;
}
.toc__list{border-top:1px solid var(--line)}
.toc__list a{
  display:flex;align-items:center;gap:10px;padding:13px 2px;
  border-bottom:1px solid var(--line);font-size:14.5px;color:var(--muted);
  transition:color .18s ease,padding-left .18s ease;
}
.toc__list a:hover{color:var(--ink);padding-left:6px}
.toc__list a i{font-style:normal;font-size:12px;color:var(--muted-2);font-variant-numeric:tabular-nums}
.toc__note{
  margin-top:22px;padding:16px 16px;border-radius:var(--r-md);
  background:#fff;border:1px solid var(--line);box-shadow:var(--sh1);
  font-size:13.5px;color:var(--muted);
}
.toc__note strong{display:block;color:var(--ink);font-size:14px;margin-bottom:4px}

/* ============ 板块通用 ============ */
.sec{padding-bottom:var(--gap-sec);scroll-margin-top:88px}
.sec-head{margin-bottom:30px}
.sec-idx{
  display:inline-block;font-size:12.5px;font-weight:800;letter-spacing:.16em;
  color:var(--lime-deep);margin-bottom:10px;font-variant-numeric:tabular-nums;
}
.sec-head h2{font-size:clamp(23px,2.5vw,34px);margin-bottom:12px}
.sec-head p{color:var(--muted);max-width:720px;font-size:15.5px}

/* 指标条 */
.stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh1);overflow:hidden;margin-bottom:var(--gap-sec);
}
.stat{padding:26px 22px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat b{
  display:block;font-size:clamp(26px,2.6vw,36px);font-weight:800;color:var(--ink);
  font-variant-numeric:tabular-nums;line-height:1.1;letter-spacing:-.02em;
}
.stat span{display:block;margin-top:8px;font-size:13.5px;color:var(--muted-2)}

/* 正文段落块 */
.prose{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:30px 32px;box-shadow:var(--sh1)}
.prose p{color:#3A3E45;font-size:15.8px;margin-bottom:14px}
.prose p:last-child{margin-bottom:0}
.dots{margin:22px 0 0;display:grid;gap:10px}
.dots li{position:relative;padding-left:22px;font-size:15.5px;color:#3A3E45}
.dots li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;
  background:var(--lime);box-shadow:0 0 0 3px rgba(166,226,46,.18);
}

/* 步骤行：编号 + 图文交错 */
.steps{margin-top:8px}
.step{
  display:grid;grid-template-columns:64px minmax(0,1fr) 240px;gap:28px;align-items:center;
  padding:32px 0;border-bottom:1px solid var(--line);
}
.step:first-child{border-top:1px solid var(--line)}
.step__no{
  font-size:26px;font-weight:800;color:var(--lime-deep);font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.step__body h3{font-size:20px;margin-bottom:10px}
.step__body p{color:var(--muted);font-size:15px;margin-bottom:12px}
.step__tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;background:rgba(166,226,46,.16);color:#4E6B10;
}
.tag--amber{background:rgba(255,122,43,.14);color:#B24E12}
.tag--line{background:transparent;border:1px solid var(--line);color:var(--muted)}
.step__pic{
  width:100%;aspect-ratio:16/10;border-radius:var(--r-md);overflow:hidden;
  border:1px solid rgba(11,12,14,.08);box-shadow:var(--sh1);
}
.step__pic img{width:100%;height:100%}
.step--rev{grid-template-columns:64px 240px minmax(0,1fr)}
.step--rev .step__pic{order:-1}

/* 参数表 */
.table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh1)}
table.spec{width:100%;border-collapse:collapse;min-width:620px}
table.spec th,table.spec td{padding:16px 20px;text-align:left;font-size:15px;border-bottom:1px solid var(--line)}
table.spec thead th{
  background:var(--ink);color:#E9EAE7;font-size:13.5px;font-weight:700;letter-spacing:.04em;
  border-bottom:0;
}
table.spec tbody tr:nth-child(even){background:#FBFAF6}
table.spec tbody tr:last-child td{border-bottom:0}
table.spec td:first-child{font-weight:700;color:var(--ink);white-space:nowrap}
table.spec td:last-child{color:var(--muted)}

/* 卡片网格 */
.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh1);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .18s ease,box-shadow .18s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh2)}
.card__pic{aspect-ratio:16/10;overflow:hidden;border-bottom:1px solid var(--line);background:#EDEAE2}
.card__pic img{width:100%;height:100%;transition:transform .35s ease}
.card:hover .card__pic img{transform:scale(1.04)}
.card__body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1}
.card__body h3{font-size:17.5px;margin-bottom:10px}
.card__body p{font-size:14.5px;color:var(--muted);margin-bottom:16px}
.card__foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px}
.card__link{font-size:14px;font-weight:700;color:var(--lime-deep)}
.card__link:hover{color:var(--ink)}

/* 深色节奏区 */
.dark{
  background:var(--ink);color:#E6E8EA;border-radius:var(--r-lg);
  padding:46px 44px;box-shadow:var(--sh2);
}
.dark h2{color:#fff;font-size:clamp(22px,2.4vw,32px);margin-bottom:12px}
.dark .sec-head p{color:#9AA0A8}
.dark .sec-idx{color:var(--lime)}
.track{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin:30px 0 34px}
.track__item{position:relative;padding-top:26px;border-top:2px solid #2E323A}
.track__item.is-done{border-top-color:var(--lime)}
.track__item.is-now{border-top-color:var(--amber)}
.track__item b{display:block;font-size:14px;color:#E6E8EA;margin-bottom:6px;font-variant-numeric:tabular-nums}
.track__item span{font-size:13px;color:#8A9099}
.track__dot{
  position:absolute;top:-8px;left:0;width:14px;height:14px;border-radius:50%;
  background:var(--ink);border:2px solid #3B404A;
}
.track__item.is-done .track__dot{background:var(--lime);border-color:var(--lime)}
.track__item.is-now .track__dot{background:var(--amber);border-color:var(--amber)}
.bar{height:10px;border-radius:999px;background:#22262D;overflow:hidden}
.bar span{display:block;height:100%;width:68%;border-radius:999px;background:linear-gradient(90deg,var(--lime),#CDEB74);transition:width .6s ease}
.bar-meta{display:flex;justify-content:space-between;gap:16px;margin-top:12px;font-size:13.5px;color:#8A9099}
.bar-meta b{color:var(--lime);font-variant-numeric:tabular-nums;font-weight:800}

/* FAQ */
.faq .accordion-item{background:transparent;border:0;border-top:1px solid var(--line);border-radius:0}
.faq .accordion-item:last-child{border-bottom:1px solid var(--line)}
.faq .accordion-button{
  background:transparent;border-radius:0;box-shadow:none;
  padding:20px 46px 20px 0;font-size:17px;font-weight:700;color:var(--ink);
}
.faq .accordion-button:not(.collapsed){color:var(--ink);background:transparent;box-shadow:none}
.faq .accordion-button:focus{box-shadow:none;outline:2px solid var(--lime);outline-offset:2px}
.faq .accordion-button::after{
  content:"+";background-image:none;width:auto;height:auto;margin-left:auto;
  font-size:22px;line-height:1;font-weight:400;color:var(--ink);
  transform:none;transition:transform .22s ease,color .22s ease;
}
.faq .accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--lime-deep)}
.faq .accordion-body{padding:0 46px 24px 0;color:var(--muted);font-size:15.5px}

/* CTA 条 */
.cta-bar{background:var(--ink-soft);border-top:1px solid #23262C}
.cta-bar__inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  padding:56px 0;
}
.cta-bar h2{color:#fff;font-size:clamp(22px,2.6vw,32px);max-width:18em}
.cta-bar p{color:#9AA0A8;font-size:14.5px;margin-top:8px}

/* 页脚 */
.site-foot{background:var(--ink);color:#B9BCC2;padding:64px 0 0;border-top:1px solid #23262C}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:38px;padding-bottom:44px}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.foot-brand .brand-mark{width:34px;height:34px;border-radius:9px;font-size:13px}
.foot-brand .brand-text{color:#fff;font-size:16px}
.foot-col p{font-size:14px;color:#8A9099;max-width:24em}
.foot-col h4{color:#fff;font-size:14.5px;margin-bottom:16px;letter-spacing:.02em}
.foot-col ul{display:grid;gap:10px}
.foot-col a{font-size:14px;color:#9AA0A8;transition:color .18s ease}
.foot-col a:hover{color:var(--lime)}
.foot-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding:22px 0 30px;border-top:1px solid var(--ink-line);font-size:13px;color:#7E838B;
}
.foot-bottom a{color:#9AA0A8}
.foot-bottom a:hover{color:var(--lime)}

/* 动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease}
.reveal.is-in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  :root{--side-w:200px;--pad-x:28px;--gap-sec:72px}
  .layout{grid-template-columns:210px minmax(0,1fr);gap:36px}
  .step{grid-template-columns:52px minmax(0,1fr) 200px;gap:22px}
  .step--rev{grid-template-columns:52px 200px minmax(0,1fr)}
  .cards{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:991.98px){
  :root{--pad-x:18px;--gap-sec:56px}
  .side{display:none}
  .shell{margin-left:0}
  .topbar{display:flex}
  .hero__inner{padding:52px 0 56px}
  .hero::after{width:260px;height:260px;top:auto;bottom:-70px}
  .layout{grid-template-columns:minmax(0,1fr);gap:0;padding-top:48px}
  .toc{position:static;margin-bottom:44px}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat{border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
  .stat:nth-child(2n){border-right:0}
  .stat:nth-child(n+3){border-bottom:0}
  .step,.step--rev{grid-template-columns:44px minmax(0,1fr);gap:18px}
  .step .step__pic,.step--rev .step__pic{grid-column:1 / -1;order:0;aspect-ratio:21/9}
  .track{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:30px}
  .dark{padding:34px 24px}
}
@media (max-width:575.98px){
  body{font-size:16px}
  .hero h1{font-size:29px}
  .hero__cta{flex-direction:column;align-items:stretch}
  .hero__cta .btn-main,.hero__cta .btn-ghost{width:100%}
  .cards{grid-template-columns:minmax(0,1fr)}
  .stats{grid-template-columns:minmax(0,1fr)}
  .stat{border-right:0;border-bottom:1px solid var(--line)}
  .stat:last-child{border-bottom:0}
  .prose{padding:22px 20px}
  .step .step__pic,.step--rev .step__pic{aspect-ratio:16/10}
  .track{grid-template-columns:minmax(0,1fr)}
  .cta-bar__inner{flex-direction:column;align-items:flex-start}
  .cta-bar .btn-main{width:100%}
  .foot-grid{grid-template-columns:minmax(0,1fr)}
  .faq .accordion-button{font-size:16px;padding-right:38px}
  .faq .accordion-body{padding-right:38px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --lime:#A6E22E;
  --lime-deep:#8CC41F;
  --amber:#FF7A2B;
  --ink:#0B0C0E;
  --ink-2:#15171B;
  --ink-3:#1E2126;
  --sand:#F7F5EF;
  --card:#FFFFFF;
  --line:#E4E0D6;
  --text:#1B1D21;
  --muted:#6B7076;
  --muted-2:#9AA0A6;
  --radius-card:14px;
  --radius-lg:18px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(11,12,14,.06);
  --shadow-2:0 10px 30px rgba(11,12,14,.10);
  --side-w:236px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--text);
  background:var(--sand);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-0.02em;color:var(--ink);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- 布局骨架 ---------- */
.layout{display:flex;min-height:100vh;}
.content{
  margin-left:var(--side-w);
  flex:1 1 auto;
  min-width:0;
  background:var(--sand);
}
.cx{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 40px;
}

/* ---------- 侧栏导航 ---------- */
.side-nav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--side-w);
  background:var(--ink);
  color:#EDEBE4;
  display:flex;
  flex-direction:column;
  padding:26px 20px 22px;
  z-index:1040;
  border-right:1px solid rgba(255,255,255,.06);
}
.side-nav__brand{margin-bottom:34px;}
.brand{
  display:flex;align-items:center;gap:10px;
}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;
  display:grid;place-items:center;
  border-radius:9px;
  background:var(--lime);
  color:var(--ink);
  font-weight:800;font-size:14px;letter-spacing:-.02em;
}
.brand-text{
  font-size:19px;font-weight:800;letter-spacing:-.02em;color:#fff;
}
.brand-sub{
  display:block;font-size:11.5px;font-weight:400;color:var(--muted-2);letter-spacing:0;
  margin-top:2px;
}
.side-nav__menu{display:flex;flex-direction:column;gap:4px;}
.side-link{
  position:relative;
  display:block;
  padding:11px 12px 11px 16px;
  font-size:15px;
  color:#B9BCC1;
  border-radius:9px;
  transition:color .18s var(--ease),background .18s var(--ease);
}
.side-link::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;background:var(--lime);border-radius:2px;
  transition:height .2s var(--ease);
}
.side-link:hover{color:#fff;background:rgba(255,255,255,.05);}
.side-link:hover::before{height:16px;}
.side-link.is-active{color:#fff;background:rgba(166,226,46,.10);}
.side-link.is-active::before{height:20px;}
.side-nav__foot{margin-top:auto;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);}
.side-cta{
  display:flex;align-items:center;justify-content:center;
  height:42px;border-radius:var(--radius-btn);
  background:var(--lime);color:var(--ink);
  font-weight:700;font-size:14.5px;
  transition:filter .18s var(--ease),box-shadow .18s var(--ease);
}
.side-cta:hover{filter:brightness(1.06);box-shadow:0 0 0 1px rgba(166,226,46,.5) inset;}
.side-note{font-size:11.5px;color:var(--muted-2);margin-top:12px;text-align:center;}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:none;
  position:sticky;top:0;z-index:1030;
  align-items:center;justify-content:space-between;
  padding:12px 18px;
  background:var(--ink);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.burger{
  display:inline-flex;align-items:center;gap:8px;
  background:transparent;border:1px solid rgba(255,255,255,.28);
  color:#fff;font-size:14px;
  padding:8px 14px;border-radius:var(--radius-btn);
}
.burger:hover{border-color:var(--lime);color:var(--lime);}
.drawer{
  background:var(--ink)!important;color:#fff;
  width:290px!important;
}
.drawer .offcanvas-header{border-bottom:1px solid rgba(255,255,255,.10);padding:20px 22px;}
.drawer .offcanvas-body{padding:22px;}
.drawer-link{
  display:block;padding:16px 4px;font-size:19px;font-weight:700;color:#D6D8DB;
  border-bottom:1px solid rgba(255,255,255,.07);
}
.drawer-link:hover{color:var(--lime);}
.drawer-link.is-active{color:var(--lime);}
.drawer-note{font-size:12.5px;color:var(--muted-2);margin-top:22px;line-height:1.7;}

/* ---------- 通用组件 ---------- */
.btn-main{
  display:inline-flex;align-items:center;gap:8px;
  height:48px;padding:0 24px;
  border:0;border-radius:var(--radius-btn);
  background:var(--lime);color:var(--ink);
  font-size:15.5px;font-weight:700;
  transition:filter .18s var(--ease),box-shadow .18s var(--ease),transform .18s var(--ease);
}
.btn-main .arw{transition:transform .18s var(--ease);}
.btn-main:hover{filter:brightness(1.06);box-shadow:0 0 0 1px rgba(166,226,46,.55) inset;}
.btn-main:hover .arw{transform:translateX(4px);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  height:48px;padding:0 22px;
  border:1px solid rgba(255,255,255,.34);border-radius:var(--radius-btn);
  background:transparent;color:#fff;font-size:15.5px;font-weight:600;
  transition:border-color .18s var(--ease),background .18s var(--ease),color .18s var(--ease);
}
.btn-ghost:hover{border-color:var(--lime);background:rgba(166,226,46,.08);color:var(--lime);}
.btn-line{
  display:inline-flex;align-items:center;gap:6px;
  height:42px;padding:0 18px;
  border:1px solid var(--line);border-radius:var(--radius-btn);
  background:#fff;color:var(--ink);font-size:14px;font-weight:600;
  transition:border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
}
.btn-line:hover{border-color:var(--lime);color:var(--lime-deep);background:rgba(166,226,46,.07);}
.tag{
  display:inline-flex;align-items:center;
  height:24px;padding:0 11px;
  border-radius:999px;
  font-size:12.5px;font-weight:600;
  background:rgba(166,226,46,.16);color:#5E7F0C;
}
.tag--amber{background:rgba(255,122,43,.14);color:#C4551A;}
.tag--ink{background:rgba(11,12,14,.06);color:var(--muted);}
.sec{padding:96px 0;}
.sec--tight{padding:72px 0;}
.sec-head{margin-bottom:28px;}
.sec-head h2{font-size:clamp(24px,2.6vw,36px);line-height:1.2;}
.sec-head p{margin-top:12px;color:var(--muted);font-size:15.5px;max-width:760px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:.14em;
  color:var(--lime-deep);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--lime);display:block;}
.hr-line{border:0;border-top:1px solid var(--line);margin:0;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:var(--ink);
  color:#fff;
  padding:92px 0 84px;
}
.hero__bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  opacity:.30;
}
.hero__mask{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(11,12,14,.94) 0%,rgba(11,12,14,.78) 48%,rgba(11,12,14,.52) 100%);
}
.hero__glow{
  position:absolute;right:-120px;top:-90px;
  width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(166,226,46,.30) 0%,rgba(166,226,46,0) 68%);
  animation:floatGlow 9s ease-in-out infinite;
}
@keyframes floatGlow{
  0%,100%{transform:translate3d(0,0,0);}
  50%{transform:translate3d(0,6px,0);}
}
.hero .cx{position:relative;z-index:2;}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:rgba(255,255,255,.62);margin-bottom:26px;
}
.crumb a:hover{color:var(--lime);}
.crumb .sep{color:rgba(255,255,255,.28);}
.crumb .cur{color:rgba(255,255,255,.86);}
.hero h1{
  font-size:clamp(30px,4.4vw,56px);
  line-height:1.08;
  color:#fff;
  max-width:16em;
}
.hero__sub{
  margin-top:20px;max-width:660px;
  font-size:16.5px;line-height:1.85;color:rgba(255,255,255,.76);
}
.hero__acts{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero__meta{
  display:flex;flex-wrap:wrap;gap:28px;
  margin-top:44px;padding-top:26px;
  border-top:1px solid rgba(255,255,255,.14);
}
.hero__meta div{min-width:120px;}
.hero__meta b{display:block;font-size:26px;font-weight:800;color:var(--lime);letter-spacing:-.02em;}
.hero__meta span{font-size:13px;color:rgba(255,255,255,.60);}

/* ---------- 横向标签 ---------- */
.tabs-bar{
  display:flex;flex-wrap:wrap;gap:10px;
  padding:16px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  margin-top:-38px;
  position:relative;z-index:3;
}
.tab-item{
  display:inline-flex;align-items:center;gap:8px;
  height:40px;padding:0 18px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fff;color:var(--muted);
  font-size:14.5px;font-weight:600;
  cursor:pointer;
  transition:all .18s var(--ease);
}
.tab-item:hover{border-color:var(--lime);color:var(--lime-deep);}
.tab-item.is-on{
  background:var(--ink);border-color:var(--ink);color:#fff;
}
.tab-item.is-on .dot{background:var(--lime);}
.dot{width:6px;height:6px;border-radius:50%;background:var(--muted-2);transition:background .18s var(--ease);}

/* ---------- 通栏卡片网格 ---------- */
.wide-list{display:flex;flex-direction:column;gap:22px;}
.wide-card{
  display:grid;
  grid-template-columns:300px 1fr;
  gap:0;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.wide-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.wide-card__img{
  position:relative;
  min-height:210px;
  overflow:hidden;
  border-right:1px solid var(--line);
}
.wide-card__img img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;}
.wide-card__body{padding:26px 28px;display:flex;flex-direction:column;}
.wide-card__top{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:14px;}
.wide-card h3{font-size:21px;line-height:1.4;}
.wide-card p{margin-top:12px;color:var(--muted);font-size:15px;line-height:1.8;}
.wide-card__foot{
  margin-top:auto;padding-top:20px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  border-top:1px solid var(--line);
}
.wide-card__time{font-size:13px;color:var(--muted-2);}
.wide-card__time b{color:var(--text);font-weight:600;}

/* ---------- 对照区 ---------- */
.spec-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
}
table.spec{width:100%;border-collapse:collapse;font-size:15px;}
table.spec th,table.spec td{
  padding:16px 20px;text-align:left;border-bottom:1px solid var(--line);
}
table.spec th{
  background:var(--ink);color:#fff;font-weight:700;font-size:14px;letter-spacing:.02em;
}
table.spec tbody tr:nth-child(even){background:rgba(247,245,239,.62);}
table.spec tbody tr:last-child td{border-bottom:0;}
table.spec td:first-child{font-weight:700;color:var(--ink);}
.sp-muted{color:var(--muted);}

/* ---------- 流程（深色区） ---------- */
.dark-sec{
  background:var(--ink-2);
  color:#E9E7E1;
  padding:96px 0;
}
.dark-sec .sec-head h2{color:#fff;}
.dark-sec .sec-head p{color:rgba(255,255,255,.62);}
.dark-sec .eyebrow{color:var(--lime);}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.step{
  position:relative;
  padding:26px 22px;
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius-card);
  background:rgba(255,255,255,.03);
  transition:border-color .18s var(--ease),background .18s var(--ease),transform .18s var(--ease);
}
.step:hover{border-color:rgba(166,226,46,.5);background:rgba(166,226,46,.06);transform:translateY(-2px);}
.step__no{
  display:inline-grid;place-items:center;
  width:38px;height:38px;border-radius:11px;
  background:var(--lime);color:var(--ink);
  font-weight:800;font-size:15px;margin-bottom:16px;
}
.step h3{color:#fff;font-size:18px;margin-bottom:10px;}
.step p{font-size:14.5px;color:rgba(255,255,255,.66);line-height:1.8;}
.bar-wrap{margin-top:44px;padding-top:30px;border-top:1px solid rgba(255,255,255,.14);}
.bar-top{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:12px;font-size:14px;color:rgba(255,255,255,.7);}
.bar-top b{font-size:20px;color:var(--lime);font-weight:800;}
.bar{height:8px;border-radius:999px;background:rgba(255,255,255,.12);overflow:hidden;}
.bar span{display:block;height:100%;width:0;border-radius:999px;background:var(--lime);transition:width .6s var(--ease);}

/* ---------- FAQ ---------- */
.faq-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);padding:6px 26px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-btn{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;background:transparent;border:0;text-align:left;
  font-size:16.5px;font-weight:700;color:var(--ink);
}
.faq-btn .ico{
  flex:0 0 24px;width:24px;height:24px;position:relative;
}
.faq-btn .ico::before,.faq-btn .ico::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink);border-radius:2px;
  transition:transform .22s var(--ease),background .22s var(--ease);
}
.faq-btn .ico::before{width:14px;height:2px;transform:translate(-50%,-50%);}
.faq-btn .ico::after{width:2px;height:14px;transform:translate(-50%,-50%);}
.faq-btn[aria-expanded="true"] .ico::after{transform:translate(-50%,-50%) rotate(90deg);}
.faq-btn[aria-expanded="true"] .ico::before,.faq-btn[aria-expanded="true"] .ico::after{background:var(--lime-deep);}
.faq-btn:hover{color:var(--lime-deep);}
.faq-body{padding:0 0 24px;color:var(--muted);font-size:15.5px;line-height:1.9;max-width:860px;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink);
  color:#fff;
  padding:64px 0;
}
.cta-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
}
.cta-inner h2{color:#fff;font-size:clamp(22px,2.4vw,32px);line-height:1.25;}
.cta-inner p{color:rgba(255,255,255,.62);margin-top:10px;font-size:15px;}
.btn-xl{
  display:inline-flex;align-items:center;gap:10px;
  height:60px;padding:0 38px;
  border:0;border-radius:var(--radius-btn);
  background:var(--lime);color:var(--ink);
  font-size:17px;font-weight:800;letter-spacing:-.01em;
  transition:filter .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-xl .arw{transition:transform .18s var(--ease);}
.btn-xl:hover{filter:brightness(1.06);box-shadow:0 0 0 1px rgba(166,226,46,.55) inset;}
.btn-xl:hover .arw{transform:translateX(5px);}

/* ---------- 页脚 ---------- */
.site-foot{background:var(--ink);color:rgba(255,255,255,.72);padding:70px 0 0;}
.foot-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;
  padding-bottom:48px;
}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.foot-col p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.58);max-width:300px;}
.foot-col h4{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.foot-col ul li{margin-bottom:11px;}
.foot-col ul a{font-size:14.5px;color:rgba(255,255,255,.66);transition:color .18s var(--ease);}
.foot-col ul a:hover{color:var(--lime);}
.foot-bottom{
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  padding:22px 0 30px;
  border-top:1px solid rgba(255,255,255,.10);
  font-size:13px;color:rgba(255,255,255,.48);
}
.foot-bottom a{color:rgba(255,255,255,.62);}
.foot-bottom a:hover{color:var(--lime);}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.on{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  :root{--side-w:200px;}
  .cx{padding:0 28px;}
  .sec{padding:72px 0;}
  .wide-card{grid-template-columns:250px 1fr;}
}
@media (max-width:991.98px){
  .side-nav{display:none;}
  .content{margin-left:0;}
  .topbar{display:flex;}
  .cx{padding:0 22px;}
  .hero{padding:64px 0 60px;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .tabs-bar{margin-top:0;border-radius:var(--radius-card);}
  .spec-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;}
}
@media (max-width:767.98px){
  .sec{padding:56px 0;}
  .dark-sec{padding:56px 0;}
  .wide-card{grid-template-columns:1fr;}
  .wide-card__img{border-right:0;border-bottom:1px solid var(--line);min-height:0;}
  .wide-card__img img{aspect-ratio:16/9;}
  .wide-card__body{padding:22px 20px;}
  .cta-band{padding:48px 0;}
  .btn-xl{width:100%;justify-content:center;}
}
@media (max-width:575.98px){
  body{font-size:16px;}
  .cx{padding:0 18px;}
  .hero h1{font-size:28px;line-height:1.16;}
  .hero__sub{font-size:15.5px;}
  .hero__acts{gap:10px;}
  .hero__acts .btn-main,.hero__acts .btn-ghost{width:100%;justify-content:center;}
  .hero__meta{gap:18px;}
  .hero__meta b{font-size:22px;}
  .steps{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr;}
  .faq-list{padding:4px 18px;}
  .tabs-bar{padding:12px;gap:8px;}
  .tab-item{height:36px;padding:0 14px;font-size:13.5px;}
  .cta-inner h2{font-size:22px;}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}