/* roulang page: index */
:root{
  --c-ink:#0E1411;
  --c-ink-2:#1B241F;
  --c-paper:#F6F5F1;
  --c-surface:#FFFFFF;
  --c-line:#E3E2DC;
  --c-text:#333A36;
  --c-muted:#6E7A73;
  --c-accent:#C6F24E;
  --c-accent-2:#FF5A28;
  --c-danger:#D8452E;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:24px;
  --sh-1:0 1px 2px rgba(14,20,17,.04), 0 10px 28px -14px rgba(14,20,17,.12);
  --sh-2:0 1px 2px rgba(14,20,17,.06), 0 16px 34px -14px rgba(14,20,17,.2);
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-h:68px;

  --bs-primary:#0E1411;
  --bs-body-bg:#F6F5F1;
  --bs-body-color:#333A36;
  --bs-border-color:#E3E2DC;
  --bs-link-color:#0E1411;
  --bs-link-hover-color:#0E1411;
  --bs-font-sans-serif:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --bs-body-font-size:16.5px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--c-text);
  background-color:var(--c-paper);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-ink);text-decoration:none;transition:color .24s var(--ease);}
a:hover{color:var(--c-ink);}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:800;letter-spacing:-.01em;}
p{margin:0;}
::selection{background:var(--c-accent);color:var(--c-ink);}

a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--c-accent);
  outline-offset:2px;
  border-radius:4px;
}

/* ---------- 通用区块 ---------- */
.section{padding:104px 0;}
.section--tight{padding:80px 0;}
.section--paper{background:var(--c-paper);}
.section--white{background:var(--c-surface);}
.section--ink{background:var(--c-ink);}

.sec-head{max-width:720px;margin-bottom:52px;}
.sec-num{
  display:block;
  font-size:13px;
  letter-spacing:.12em;
  color:var(--c-muted);
  font-weight:600;
  margin-bottom:14px;
}
.sec-title{
  font-size:clamp(1.5rem,2.4vw,2.1rem);
  line-height:1.28;
  font-weight:800;
  letter-spacing:-.01em;
}
.sec-desc{margin-top:16px;color:var(--c-muted);font-size:16px;line-height:1.85;}

/* ---------- 按钮 ---------- */
.btn-accent,.btn-ghost,.btn-ghost-light{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:999px;
  font-size:15.5px;font-weight:700;line-height:1;
  cursor:pointer;border:1px solid transparent;
  transition:transform .28s var(--ease),background-color .28s var(--ease),color .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.btn-accent{background:var(--c-accent);border-color:var(--c-accent);color:var(--c-ink);}
.btn-accent:hover{background:#d5fa6b;border-color:#d5fa6b;color:var(--c-ink);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-accent:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-ghost{background:transparent;border-color:rgba(14,20,17,.28);color:var(--c-ink);}
.btn-ghost:hover{background:var(--c-ink);border-color:var(--c-ink);color:var(--c-paper);transform:translateY(-1px);}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.42);color:#fff;}
.btn-ghost-light:hover{background:#fff;border-color:#fff;color:var(--c-ink);transform:translateY(-1px);}
.btn-block{width:100%;}

.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:700;color:var(--c-ink);
  position:relative;padding-bottom:2px;
}
.link-arrow::after{
  content:"";
  width:14px;height:8px;
  background:currentColor;
  -webkit-mask:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 8'><path d='M0 4h11.2L8.2 1l1.1-1L14 4l-4.7 4-1.1-1 3-3H0z' fill='black'/></svg>") no-repeat center/contain;
  mask:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 8'><path d='M0 4h11.2L8.2 1l1.1-1L14 4l-4.7 4-1.1-1 3-3H0z' fill='black'/></svg>") no-repeat center/contain;
  transition:transform .28s var(--ease);
  flex:0 0 auto;
}
.link-arrow:hover::after{transform:translateX(3px);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:#fff;
  transition:box-shadow .28s var(--ease),border-color .28s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:0 6px 22px -18px rgba(14,20,17,.5);}
.topline{height:3px;background:var(--c-accent);}
.nav-main{height:var(--nav-h);display:flex;align-items:center;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand__mark{
  width:36px;height:36px;border-radius:11px;
  display:grid;place-items:center;
  background:var(--c-ink);
  flex:0 0 auto;
}
.brand__mark svg{width:24px;height:24px;display:block;}
.brand__text{
  font-size:17.5px;font-weight:800;letter-spacing:-.02em;color:var(--c-ink);
  white-space:nowrap;
}
.nav-pill{
  display:none;align-items:center;gap:4px;
  background:var(--c-paper);border-radius:999px;padding:5px;
}
.nav-pill__link{
  display:inline-block;
  padding:9px 18px;border-radius:999px;
  font-size:15px;font-weight:600;color:var(--c-text);
  position:relative;
  transition:background-color .24s var(--ease),color .24s var(--ease);
}
.nav-pill__link:hover{background:#fff;color:var(--c-ink);}
.nav-pill__link.is-active{background:var(--c-ink);color:var(--c-paper);}
.nav-actions{display:flex;align-items:center;gap:16px;}
.nav-actions .btn-accent{padding:12px 22px;font-size:14.5px;}
.nav-sub{
  font-size:14.5px;font-weight:700;color:var(--c-ink);
  border-bottom:2px solid transparent;
  padding-bottom:2px;
}
.nav-sub:hover{border-bottom-color:var(--c-accent);}
.hamburger{
  width:46px;height:46px;border-radius:12px;
  border:1px solid var(--c-line);background:#fff;
  display:grid;place-items:center;gap:5px;padding:0;
  cursor:pointer;
}
.hamburger span{display:block;width:20px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform .3s var(--ease),opacity .3s var(--ease);}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.offcanvas{background:#fff;width:86vw;max-width:360px;}
.offcanvas-body{padding:24px 22px 32px;display:flex;flex-direction:column;height:100%;}
.drawer-link{
  display:block;padding:16px 2px;
  font-size:18px;font-weight:700;color:var(--c-ink);
  border-bottom:1px solid var(--c-line);
}
.drawer-link.is-active{color:var(--c-ink);}
.drawer-link.is-active::before{
  content:"";display:inline-block;width:6px;height:6px;border-radius:50%;
  background:var(--c-accent);margin-right:10px;vertical-align:middle;
}
.drawer-foot{margin-top:auto;padding-top:26px;}
.drawer-foot p{font-size:13px;color:var(--c-muted);margin-top:14px;}
.offcanvas-backdrop{background:rgba(14,20,17,.5);}

@media (min-width:992px){
  .nav-pill{display:inline-flex;}
  .nav-actions{display:flex;}
}

/* ---------- Hero ---------- */
.hero{position:relative;background:var(--c-ink);overflow:hidden;}
.hero__bg{position:absolute;inset:0;background-position:center;background-size:cover;background-repeat:no-repeat;}
.hero__mask{position:absolute;inset:0;background:linear-gradient(100deg,rgba(14,20,17,.94) 0%,rgba(14,20,17,.80) 46%,rgba(14,20,17,.52) 100%);}
.hero__inner{position:relative;z-index:2;padding:96px 0 104px;}
.hero__eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.12em;font-weight:600;
  color:var(--c-accent);text-transform:none;margin-bottom:22px;
}
.hero__eyebrow::before{content:"";width:22px;height:2px;background:var(--c-accent);border-radius:2px;}
.hero__title{
  font-size:clamp(2.1rem,4.6vw,3.6rem);
  line-height:1.08;
  letter-spacing:-.02em;
  color:#fff;
  font-weight:800;
  margin-bottom:22px;
}
.hero__title .hl{color:var(--c-accent);}
.hero__sub{
  font-size:17px;line-height:1.85;color:rgba(255,255,255,.78);
  max-width:560px;margin-bottom:34px;
}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero__points{display:flex;flex-wrap:wrap;gap:10px 26px;}
.hero__points li{
  display:flex;align-items:center;gap:8px;
  font-size:14px;color:rgba(255,255,255,.72);
}
.hero__points li::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent);flex:0 0 auto;
}

.hero-board{
  background:var(--c-surface);
  border-radius:var(--r-md);
  padding:30px 28px;
  box-shadow:var(--sh-2);
}
.hero-board__head{
  display:flex;align-items:center;justify-content:space-between;
  padding-bottom:18px;border-bottom:1px solid var(--c-line);
}
.hero-board__head h2{font-size:16px;font-weight:800;letter-spacing:-.01em;}
.live-dot{display:inline-flex;align-items:center;gap:7px;font-size:12px;color:var(--c-muted);letter-spacing:.06em;}
.live-dot i{width:7px;height:7px;border-radius:50%;background:var(--c-accent);display:block;box-shadow:0 0 0 3px rgba(198,242,78,.28);}
.board-row{display:flex;align-items:flex-end;justify-content:space-between;gap:14px;padding:18px 0;border-bottom:1px solid var(--c-line);}
.board-row:last-child{border-bottom:none;padding-bottom:0;}
.board-label{font-size:13.5px;color:var(--c-muted);line-height:1.5;padding-bottom:3px;}
.board-value{
  font-size:32px;font-weight:700;color:var(--c-ink);letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;line-height:1.1;white-space:nowrap;
}
.board-value small{font-size:14px;font-weight:700;margin-left:2px;color:var(--c-muted);}

/* ---------- 指标带 ---------- */
.metric-band{
  display:grid;grid-template-columns:repeat(2,1fr);
  gap:0;
  border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
  padding:8px 0;
}
.metric{padding:26px 22px;border-left:1px solid var(--c-line);}
.metric:nth-child(odd){border-left:none;padding-left:0;}
.metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--c-line);}
.metric__num{
  font-size:clamp(1.85rem,3vw,2.7rem);
  font-weight:700;color:var(--c-ink);letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;line-height:1.05;
}
.metric__num em{font-style:normal;font-size:.52em;font-weight:700;margin-left:3px;color:var(--c-muted);}
.metric__txt{margin-top:8px;font-size:14px;color:var(--c-muted);line-height:1.6;}
@media (min-width:768px){
  .metric-band{grid-template-columns:repeat(4,1fr);padding:0;}
  .metric{padding:34px 28px;border-bottom:none !important;}
  .metric:nth-child(odd){border-left:1px solid var(--c-line);padding-left:28px;}
  .metric:first-child{border-left:none;padding-left:0;}
}

/* ---------- 服务矩阵 ---------- */
.svc-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  padding:28px;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease),transform .3s var(--ease);
}
.svc-card:hover{border-color:rgba(14,20,17,.2);box-shadow:var(--sh-1);transform:translateY(-2px);}
.svc-num{font-size:13px;letter-spacing:.12em;color:var(--c-muted);font-weight:600;margin-bottom:14px;}
.svc-card h3{font-size:1.2rem;font-weight:700;line-height:1.4;margin-bottom:10px;}
.svc-card p{font-size:15px;color:var(--c-muted);line-height:1.8;margin-bottom:18px;}
.svc-card .link-arrow{margin-top:auto;}
.svc-card--media{padding:0;overflow:hidden;}
.svc-card--media .svc-body{padding:28px;display:flex;flex-direction:column;flex:1;}
.svc-media{width:100%;aspect-ratio:16/10;object-fit:cover;background:#E9E8E2;}
.svc-card--dark{background:var(--c-ink);border-color:var(--c-ink);}
.svc-card--dark .svc-num{color:rgba(255,255,255,.5);}
.svc-card--dark h3{color:#fff;}
.svc-card--dark p{color:rgba(255,255,255,.68);}
.svc-card--dark .link-arrow{color:var(--c-accent);}
.svc-card--dark:hover{border-color:var(--c-accent);}
.svc-thumb{
  border-radius:var(--r-sm);overflow:hidden;
  aspect-ratio:16/10;background:#E9E8E2;margin-bottom:18px;
}
.svc-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.svc-card:hover .svc-thumb img{transform:scale(1.03);}

/* ---------- 最新信息 ---------- */
.post-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease),transform .3s var(--ease);
}
.post-card:hover{border-color:rgba(14,20,17,.2);box-shadow:var(--sh-1);transform:translateY(-2px);}
.post-card__media{display:block;aspect-ratio:16/10;background:#E9E8E2;overflow:hidden;}
.post-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.post-card:hover .post-card__media img{transform:scale(1.03);}
.post-card__body{padding:24px;display:flex;flex-direction:column;flex:1;}
.badge-cat{
  display:inline-block;align-self:flex-start;
  background:var(--c-accent-2);color:#fff;
  font-size:11.5px;letter-spacing:.06em;font-weight:600;
  padding:5px 12px;border-radius:999px;margin-bottom:14px;
}
.badge-cat--soft{background:var(--c-paper);color:var(--c-ink);}
.post-card__title{font-size:1.12rem;font-weight:700;line-height:1.45;margin-bottom:10px;}
.post-card__title a{color:var(--c-ink);}
.post-card__title a:hover{color:var(--c-ink);}
.post-card__excerpt{
  font-size:14.6px;color:var(--c-muted);line-height:1.8;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card__meta{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.post-card__time{font-size:13px;color:var(--c-muted);letter-spacing:.04em;font-variant-numeric:tabular-nums;}

.empty-state{
  border:1px dashed var(--c-line);
  border-radius:var(--r-md);
  padding:56px 24px;
  text-align:center;
  background:var(--c-surface);
}
.empty-state svg{width:44px;height:44px;margin:0 auto 16px;display:block;color:var(--c-muted);}
.empty-state p{font-size:15px;color:var(--c-muted);margin-bottom:20px;}

/* ---------- 对比 ---------- */
.compare{display:grid;gap:20px;}
.compare-card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-md);padding:30px;
}
.compare-card--good{border-color:rgba(14,20,17,.28);box-shadow:var(--sh-1);}
.compare-head{display:flex;align-items:center;gap:12px;margin-bottom:8px;}
.compare-head h3{font-size:1.1rem;font-weight:700;}
.compare-tag{
  font-size:11.5px;letter-spacing:.06em;font-weight:700;
  padding:5px 12px;border-radius:999px;
  background:var(--c-paper);color:var(--c-muted);
}
.compare-card--good .compare-tag{background:var(--c-accent);color:var(--c-ink);}
.compare-card p{font-size:14.5px;color:var(--c-muted);margin-bottom:18px;}
.compare-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 0;border-top:1px solid var(--c-line);
  font-size:15px;color:var(--c-text);line-height:1.75;
}
.compare-list li::before{
  content:"";width:18px;height:18px;border-radius:50%;flex:0 0 auto;margin-top:5px;
  background:var(--c-paper) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'><path d='M2 6.2l2.4 2.4L10 3.4' fill='none' stroke='%236E7A73' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/></svg>") no-repeat center/11px;
}
.compare-card--good .compare-list li::before{
  background:var(--c-accent) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'><path d='M2 6.2l2.4 2.4L10 3.4' fill='none' stroke='%230E1411' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/></svg>") no-repeat center/11px;
}
@media (min-width:768px){.compare{grid-template-columns:1fr 1fr;gap:24px;}}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;}
.faq-item{border-top:1px solid var(--c-line);}
.faq-item:last-child{border-bottom:1px solid var(--c-line);}
.faq-btn{
  width:100%;background:transparent;border:0;padding:24px 46px 24px 0;
  text-align:left;font-size:1.06rem;font-weight:700;color:var(--c-ink);line-height:1.5;
  position:relative;cursor:pointer;transition:color .24s var(--ease);
}
.faq-btn:hover{color:var(--c-ink);}
.faq-btn::before,.faq-btn::after{
  content:"";position:absolute;right:8px;top:50%;background:var(--c-ink);border-radius:2px;
  transition:transform .32s var(--ease),opacity .32s var(--ease);
}
.faq-btn::before{width:16px;height:2px;transform:translateY(-50%);}
.faq-btn::after{width:2px;height:16px;right:15px;transform:translateY(-50%);}
.faq-btn[aria-expanded="true"]::after{transform:translateY(-50%) scaleY(0);opacity:0;}
.faq-panel{padding:0 46px 26px 0;font-size:15.5px;line-height:1.85;color:var(--c-muted);}
.faq-panel[hidden]{display:none;}

/* ---------- 表单 ---------- */
.form-panel{
  background:var(--c-surface);border-radius:var(--r-md);
  padding:32px;border:1px solid var(--c-line);box-shadow:var(--sh-1);
}
.field{margin-bottom:20px;}
.field label{
  display:block;font-size:13px;color:var(--c-muted);
  letter-spacing:.04em;margin-bottom:8px;font-weight:600;
}
.form-control,.form-select{
  width:100%;height:50px;border-radius:var(--r-sm);
  border:1px solid var(--c-line);background:#fff;
  padding:0 16px;font-size:15.5px;color:var(--c-text);
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
  appearance:none;
}
textarea.form-control{height:auto;min-height:120px;padding:14px 16px;line-height:1.7;resize:vertical;}
.form-select{
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'><path d='M1 1.5L6 6.5L11 1.5' fill='none' stroke='%236E7A73' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/></svg>");
  background-repeat:no-repeat;background-position:right 16px center;background-size:12px;
  padding-right:42px;
}
.form-control:focus,.form-select:focus{
  outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(198,242,78,.35);
}
.form-control::placeholder,textarea.form-control::placeholder{color:#A9B2AC;}
.form-control.is-error{border-color:var(--c-danger);box-shadow:0 0 0 3px rgba(216,69,46,.14);}
.err-msg{display:none;font-size:13px;color:var(--c-danger);margin-top:6px;}
.err-msg.show{display:block;}
.form-note{font-size:13px;color:var(--c-muted);margin-top:14px;text-align:center;}

.point-list li{display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--c-line);}
.point-list li:first-child{padding-top:0;}
.point-list li:last-child{border-bottom:none;padding-bottom:0;}
.point-ico{
  width:42px;height:42px;border-radius:12px;flex:0 0 auto;
  background:var(--c-paper);display:grid;place-items:center;
}
.point-ico svg{width:20px;height:20px;}
.point-list h3{font-size:1rem;font-weight:700;margin-bottom:5px;}
.point-list p{font-size:14.5px;color:var(--c-muted);line-height:1.7;}

/* ---------- 深色 CTA 条 ---------- */
.cta-band{
  background:var(--c-ink);border-radius:var(--r-lg);
  padding:44px 38px;color:#fff;
  display:flex;flex-wrap:wrap;gap:26px;align-items:center;justify-content:space-between;
}
.cta-band h2{color:#fff;font-size:clamp(1.35rem,2.2vw,1.8rem);line-height:1.35;letter-spacing:-.01em;}
.cta-band p{color:rgba(255,255,255,.68);font-size:15px;margin-top:10px;max-width:520px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:rgba(255,255,255,.72);padding:76px 0 0;}
.footer-brand{
  display:inline-flex;align-items:center;gap:10px;margin-bottom:18px;
}
.footer-brand .brand__mark{background:var(--c-accent);}
.footer-brand .brand__text{color:#fff;}
.footer-desc{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.62);max-width:300px;}
.site-footer h3{
  color:#fff;font-size:14px;font-weight:700;letter-spacing:.06em;margin-bottom:20px;
}
.footer-links li{margin-bottom:12px;}
.footer-links a{font-size:14.5px;color:rgba(255,255,255,.68);}
.footer-links a:hover{color:var(--c-accent);}
.footer-contact li{font-size:14.5px;color:rgba(255,255,255,.68);margin-bottom:12px;line-height:1.7;}
.footer-contact strong{color:#fff;font-weight:600;}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);
  padding:24px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 动效 ---------- */
html.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .48s var(--ease),transform .48s var(--ease);}
html.js .reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  html.js .reveal{opacity:1;transform:none;transition:none;}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
}

/* ---------- 响应式 ---------- */
@media (max-width:991.98px){
  .section{padding:80px 0;}
  .section--tight{padding:64px 0;}
  .hero__inner{padding:72px 0 80px;}
  .sec-head{margin-bottom:40px;}
  .nav-actions{display:none;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .section{padding:56px 0;}
  .section--tight{padding:52px 0;}
  .hero__inner{padding:60px 0 64px;}
  .hero__title{font-size:clamp(2.1rem,8vw,2.5rem);}
  .hero__cta .btn-accent,.hero__cta .btn-ghost{width:100%;}
  .hero-board{padding:24px 22px;}
  .board-value{font-size:26px;}
  .cta-band{padding:32px 24px;}
  .cta-band .btn-accent,.cta-band .btn-ghost-light{width:100%;}
  .form-panel{padding:24px 20px;}
  .faq-panel{padding-right:12px;}
  .faq-btn{padding-right:40px;}
  .nav-pill{display:none;}
  .brand__text{font-size:16px;}
  .compare-card{padding:24px;}
}
@media (max-width:575.98px){
  .metric-band{grid-template-columns:1fr;}
  .metric{border-left:none !important;padding-left:0 !important;}
  .metric:nth-child(1),.metric:nth-child(2),.metric:nth-child(3){border-bottom:1px solid var(--c-line) !important;}
  .hero__title{font-size:1.95rem;}
  .sec-title{font-size:1.42rem;}
}

/* roulang page: category1 */
:root{
  --c-ink:#0E1411;
  --c-ink-2:#1B241F;
  --c-paper:#F6F5F1;
  --c-surface:#FFFFFF;
  --c-line:#E3E2DC;
  --c-text:#333A36;
  --c-muted:#6E7A73;
  --c-accent:#C6F24E;
  --c-accent-2:#FF5A28;
  --c-danger:#D8452E;
  --r-card:16px;
  --r-lg:24px;
  --r-input:12px;
  --r-pill:999px;
  --sh-card:0 1px 2px rgba(14,20,17,.04), 0 10px 28px -14px rgba(14,20,17,.12);
  --sh-card-h:0 1px 2px rgba(14,20,17,.06), 0 18px 34px -14px rgba(14,20,17,.22);
  --ease:cubic-bezier(.22,.61,.36,1);

  --bs-primary:#C6F24E;
  --bs-primary-rgb:198,242,78;
  --bs-body-bg:#F6F5F1;
  --bs-body-color:#333A36;
  --bs-border-color:#E3E2DC;
  --bs-font-sans-serif:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --bs-link-color:#0E1411;
  --bs-link-hover-color:#0E1411;
  --bs-border-radius:16px;
  --bs-body-font-size:16.5px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .24s var(--ease)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px;
}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:800;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
::selection{background:var(--c-accent);color:var(--c-ink)}

/* ============ 容器 ============ */
.container{width:100%;padding-left:16px;padding-right:16px;margin-left:auto;margin-right:auto}
@media (min-width:576px){.container{max-width:540px}}
@media (min-width:768px){.container{max-width:720px;padding-left:24px;padding-right:24px}}
@media (min-width:992px){.container{max-width:960px}}
@media (min-width:1200px){.container{max-width:1200px}}
@media (min-width:1400px){.container{max-width:1320px}}

/* ============ 顶部细线 & 导航 ============ */
.topbar-accent{height:3px;background:var(--c-accent);width:100%}
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--c-surface);
  border-bottom:1px solid transparent;
  transition:height .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:0 1px 2px rgba(14,20,17,.04),0 10px 24px -18px rgba(14,20,17,.35)}
.header-inner{display:flex;align-items:center;gap:20px;height:68px;transition:height .3s var(--ease)}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand__mark{width:32px;height:32px;display:inline-flex;align-items:center;justify-content:center;flex:0 0 32px}
.brand__mark svg{width:100%;height:100%}
.brand__text{font-size:1.06rem;font-weight:800;color:var(--c-ink);letter-spacing:-.02em;white-space:nowrap}
.nav-pill{
  display:none;align-items:center;gap:4px;margin:0 auto;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-pill);padding:4px;
}
.nav-pill__link{
  display:inline-block;padding:8px 18px;border-radius:var(--r-pill);
  font-size:15px;font-weight:500;color:var(--c-text);white-space:nowrap;
  transition:background .24s var(--ease),color .24s var(--ease);
}
.nav-pill__link:hover{background:rgba(14,20,17,.05);color:var(--c-ink)}
.nav-pill__link.is-active{background:var(--c-paper);color:var(--c-ink);font-weight:700}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.nav-toggle{
  width:44px;height:44px;border:1px solid var(--c-line);background:var(--c-surface);
  border-radius:12px;display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  cursor:pointer;transition:border-color .24s var(--ease),background .24s var(--ease);
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform .24s var(--ease)}
.nav-toggle:hover{border-color:rgba(14,20,17,.3)}
@media (min-width:992px){.nav-pill{display:flex}.nav-toggle{display:none!important}}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:inherit;font-size:15px;font-weight:700;line-height:1;
  padding:13px 24px;border-radius:var(--r-pill);border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:transform .24s var(--ease),background .24s var(--ease),color .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.btn-accent{background:var(--c-accent);color:var(--c-ink);box-shadow:0 1px 2px rgba(14,20,17,.06),0 10px 24px -16px rgba(14,20,17,.5)}
.btn-accent:hover{background:#d3f96a;color:var(--c-ink);transform:translateY(-1px);box-shadow:0 1px 2px rgba(14,20,17,.08),0 16px 30px -16px rgba(14,20,17,.55)}
.btn-accent:active{transform:translateY(0)}
.btn-outline-ink{background:transparent;color:var(--c-ink);border-color:rgba(14,20,17,.3)}
.btn-outline-ink:hover{background:var(--c-ink);color:var(--c-paper);border-color:var(--c-ink);transform:translateY(-1px)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-outline-light:hover{background:#fff;color:var(--c-ink);border-color:#fff;transform:translateY(-1px)}
.btn-sm{padding:10px 18px;font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:15px;color:var(--c-ink)}
.link-arrow::after{content:"→";display:inline-block;transition:transform .24s var(--ease);font-size:16px;line-height:1}
.link-arrow:hover::after{transform:translateX(3px)}

/* ============ 分类 Hero ============ */
.cat-hero{
  position:relative;
  padding:104px 0 96px;
  background-image:linear-gradient(115deg,rgba(14,20,17,.88) 0%,rgba(14,20,17,.72) 45%,rgba(14,20,17,.58) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  overflow:hidden;
}
.cat-hero::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  border:1px solid rgba(198,242,78,.28);pointer-events:none;
}
.cat-hero__inner{position:relative;z-index:2;max-width:820px}
.cat-hero__eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--c-accent);
  background:rgba(198,242,78,.12);border:1px solid rgba(198,242,78,.32);
  padding:6px 14px;border-radius:var(--r-pill);margin-bottom:22px;
}
.cat-hero h1{
  color:#fff;font-size:clamp(2.1rem,4.6vw,3.4rem);line-height:1.1;letter-spacing:-.02em;font-weight:800;
  max-width:17em;
}
.cat-hero h1 .hl{color:var(--c-accent)}
.cat-hero__lead{color:rgba(255,255,255,.84);font-size:1.08rem;line-height:1.8;margin-top:20px;max-width:34em}
.cat-hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
@media (max-width:767px){
  .cat-hero{padding:72px 0 64px}
  .cat-hero__actions .btn{width:100%}
}

/* ============ 板块基础 ============ */
.section{padding:104px 0}
.section--tight{padding:80px 0}
.section--paper{background:var(--c-paper)}
.section--white{background:var(--c-surface)}
.section-head{max-width:760px;margin-bottom:48px}
.section-num{
  display:block;font-size:13px;letter-spacing:.12em;color:var(--c-muted);font-weight:700;margin-bottom:12px;
}
.section-head h2{font-size:clamp(1.5rem,2.4vw,2.1rem);line-height:1.28;letter-spacing:-.01em}
.section-head p{margin-top:16px;color:var(--c-text);font-size:16.5px;line-height:1.85}
@media (max-width:991px){.section{padding:80px 0}.section--tight{padding:64px 0}}
@media (max-width:767px){.section{padding:56px 0}.section--tight{padding:48px 0}.section-head{margin-bottom:32px}}

/* ============ 登录前要点 ============ */
.prepare-grid{display:grid;grid-template-columns:1fr;gap:40px;align-items:start}
@media (min-width:992px){.prepare-grid{grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:64px}}
.prepare-copy p{margin-top:18px;line-height:1.9;color:var(--c-text)}
.prepare-copy .link-arrow{margin-top:24px}
.check-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media (min-width:640px){.check-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.check-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-card);height:100%;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease),transform .3s var(--ease);
}
.check-card:hover{border-color:rgba(14,20,17,.22);box-shadow:var(--sh-card-h);transform:translateY(-2px)}
.check-card__icon{
  width:40px;height:40px;border-radius:12px;background:var(--c-paper);
  display:inline-flex;align-items:center;justify-content:center;margin-bottom:16px;
  border:1px solid var(--c-line);
}
.check-card__icon svg{width:20px;height:20px}
.check-card h3{font-size:1.05rem;line-height:1.4;margin-bottom:8px}
.check-card p{font-size:15px;line-height:1.8;color:var(--c-muted)}

/* ============ 指标带 ============ */
.metrics{
  display:grid;grid-template-columns:1fr;gap:0;
  border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
}
@media (min-width:768px){.metrics{grid-template-columns:repeat(2,1fr)}}
@media (min-width:992px){.metrics{grid-template-columns:repeat(4,1fr)}}
.metric{padding:32px 8px 32px 0}
@media (min-width:768px){
  .metric{padding:36px 28px}
  .metric+.metric{border-left:1px solid var(--c-line)}
  .metric:nth-child(3){border-left:none}
}
@media (min-width:992px){
  .metric:nth-child(3){border-left:1px solid var(--c-line)}
}
@media (max-width:767px){
  .metric{padding:24px 0}
  .metric+.metric{border-top:1px solid var(--c-line)}
}
.metric__num{
  font-size:clamp(2rem,3.4vw,3rem);font-weight:700;color:var(--c-ink);line-height:1.1;
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.metric__num small{font-size:.44em;font-weight:700;margin-left:4px;letter-spacing:0}
.metric__label{margin-top:10px;font-size:14px;color:var(--c-muted);line-height:1.7}

/* ============ 步骤 ============ */
.steps-grid{display:grid;grid-template-columns:1fr;gap:40px;align-items:center}
@media (min-width:992px){.steps-grid{grid-template-columns:minmax(0,6fr) minmax(0,5fr);gap:64px}}
.step-list{display:grid;gap:0;border-top:1px solid var(--c-line)}
.step{
  display:flex;gap:20px;padding:24px 0;border-bottom:1px solid var(--c-line);
  transition:background .3s var(--ease);
}
.step:hover{background:rgba(198,242,78,.07)}
.step__num{
  flex:0 0 44px;height:44px;border-radius:50%;background:var(--c-accent);color:var(--c-ink);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;
  font-variant-numeric:tabular-nums;
}
.step__body h3{font-size:1.08rem;margin-bottom:6px}
.step__body p{font-size:15px;line-height:1.8;color:var(--c-muted)}
.media-figure{margin:0}
.media-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:14px;background:#E9E8E2}
.media-figure figcaption{margin-top:12px;font-size:13px;color:var(--c-muted);letter-spacing:.04em}

/* ============ 对比表 ============ */
.table-wrap{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);overflow-x:auto;-webkit-overflow-scrolling:touch;
}
table.compare{width:100%;border-collapse:collapse;min-width:720px}
table.compare caption{
  caption-side:top;text-align:left;padding:24px 28px 4px;font-size:14px;color:var(--c-muted);letter-spacing:.04em;
}
table.compare th,table.compare td{
  padding:0 28px;text-align:left;font-size:15.5px;vertical-align:middle;
}
table.compare thead th{
  background:var(--c-paper);color:var(--c-ink);font-weight:700;font-size:14.5px;
  height:56px;border-bottom:1px solid var(--c-line);white-space:nowrap;
}
table.compare tbody td{height:56px;border-bottom:1px solid var(--c-line);color:var(--c-text)}
table.compare tbody tr:last-child td{border-bottom:none}
table.compare tbody tr{transition:background .24s var(--ease)}
table.compare tbody tr:hover{background:rgba(198,242,78,.08)}
table.compare td:first-child{font-weight:700;color:var(--c-ink);white-space:nowrap}
.cell-warn{color:var(--c-accent-2);font-weight:600}
.cell-ok{color:var(--c-ink);font-weight:600}

/* ============ 徽章 ============ */
.badge-soft{
  display:inline-flex;align-items:center;font-size:11.5px;font-weight:700;letter-spacing:.06em;
  padding:5px 12px;border-radius:var(--r-pill);background:var(--c-paper);color:var(--c-muted);border:1px solid var(--c-line);
}
.badge-accent{
  display:inline-flex;align-items:center;font-size:11.5px;font-weight:700;letter-spacing:.06em;
  padding:5px 12px;border-radius:var(--r-pill);background:var(--c-accent-2);color:#fff;
}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--c-line)}
.faq-list .accordion-item{border:0;border-bottom:1px solid var(--c-line);background:transparent;border-radius:0}
.faq-list .accordion-header{margin:0}
.faq-list .accordion-button{
  background:transparent;box-shadow:none;border-radius:0!important;
  padding:24px 52px 24px 0;font-size:1.06rem;font-weight:700;color:var(--c-ink);line-height:1.5;
  font-family:inherit;
}
.faq-list .accordion-button:not(.collapsed){background:transparent;color:var(--c-ink)}
.faq-list .accordion-button:focus{box-shadow:none;border-radius:0}
.faq-list .accordion-button::after{
  content:"";position:absolute;right:8px;top:50%;margin:0;width:14px;height:14px;transform:translateY(-50%);
  background-image:linear-gradient(var(--c-ink),var(--c-ink)),linear-gradient(var(--c-ink),var(--c-ink));
  background-size:14px 2px,2px 14px;
  background-position:center,center;
  background-repeat:no-repeat;
  transition:background-size .3s var(--ease),transform .3s var(--ease);
}
.faq-list .accordion-button.collapsed::after{background-size:14px 2px,2px 14px}
.faq-list .accordion-button:not(.collapsed)::after{background-size:14px 2px,2px 0;transform:translateY(-50%)}
.faq-list .accordion-body{
  padding:0 52px 26px 0;font-size:15.5px;line-height:1.85;color:var(--c-muted);
}
.faq-list .accordion-body p+p{margin-top:10px}

/* ============ CTA / 表单 ============ */
.cta-grid{display:grid;grid-template-columns:1fr;gap:40px}
@media (min-width:992px){.cta-grid{grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:64px;align-items:start}}
.cta-points{margin-top:28px;display:grid;gap:18px}
.cta-point{display:flex;gap:14px;align-items:flex-start}
.cta-point__icon{
  flex:0 0 32px;width:32px;height:32px;border-radius:10px;background:var(--c-paper);
  border:1px solid var(--c-line);display:flex;align-items:center;justify-content:center;
}
.cta-point__icon svg{width:16px;height:16px}
.cta-point h3{font-size:1rem;margin-bottom:4px}
.cta-point p{font-size:14.5px;color:var(--c-muted);line-height:1.75}
.form-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:32px;box-shadow:var(--sh-card);
}
.form-row{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:576px){.form-row--2{grid-template-columns:repeat(2,minmax(0,1fr))}}
.field{display:flex;flex-direction:column}
.field label{font-size:13px;font-weight:700;letter-spacing:.04em;color:var(--c-muted);margin-bottom:8px}
.field .form-control,.field .form-select{
  height:50px;border-radius:var(--r-input);border:1px solid var(--c-line);background:var(--c-surface);
  color:var(--c-ink);font-size:15.5px;font-family:inherit;padding:0 16px;box-shadow:none;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.field textarea.form-control{height:auto;min-height:120px;padding:14px 16px;line-height:1.75;resize:vertical}
.field .form-control::placeholder,.field textarea.form-control::placeholder{color:#A6AFA9}
.field .form-control:focus,.field .form-select:focus{
  border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(198,242,78,.35);outline:none;
}
.field .form-select{
  appearance:none;-webkit-appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='9' viewBox='0 0 14 9'%3E%3Cpath d='M1 1l6 6 6-6' fill='none' stroke='%230E1411' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 16px center;padding-right:44px;
}
.field.has-error .form-control,.field.has-error .form-select{border-color:var(--c-danger)}
.field-error{display:none;margin-top:8px;font-size:13px;color:var(--c-danger)}
.field.has-error .field-error{display:block}
.form-actions{margin-top:26px}
.form-actions .btn{width:100%}
.form-note{margin-top:14px;font-size:13px;color:var(--c-muted);text-align:center}
.form-feedback{
  display:none;margin-top:16px;font-size:14px;padding:12px 16px;border-radius:12px;
  background:rgba(198,242,78,.22);color:var(--c-ink);border:1px solid rgba(198,242,78,.6);
}
.form-feedback.is-visible{display:block}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-ink);color:rgba(246,245,241,.72);padding:80px 0 32px;margin-top:0}
.site-footer h3{color:#fff;font-size:15px;font-weight:700;letter-spacing:.04em;margin-bottom:20px}
.footer-brand{display:inline-flex;align-items:center;gap:10px}
.footer-brand .brand__mark svg path:first-child{stroke:#F6F5F1}
.footer-brand .brand__text{color:#fff;font-size:1.06rem;font-weight:800;letter-spacing:-.02em}
.footer-desc{margin-top:18px;font-size:14.5px;line-height:1.85;color:rgba(246,245,241,.66);max-width:30em}
.footer-links li+li{margin-top:12px}
.footer-links a{font-size:14.5px;color:rgba(246,245,241,.72);position:relative;display:inline-block}
.footer-links a::after{
  content:"";position:absolute;left:0;bottom:-3px;height:2px;width:0;background:var(--c-accent);
  transition:width .3s var(--ease);
}
.footer-links a:hover{color:#fff}
.footer-links a:hover::after{width:100%}
.footer-contact li{font-size:14px;line-height:1.8;color:rgba(246,245,241,.66)}
.footer-contact li+li{margin-top:12px}
.footer-contact strong{color:#fff;font-weight:700}
.footer-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid rgba(246,245,241,.14);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(246,245,241,.52);letter-spacing:.04em;
}

/* ============ 移动端抽屉 ============ */
.offcanvas.mobile-nav{
  width:86vw;max-width:360px;background:var(--c-surface);border-right:1px solid var(--c-line);
}
.offcanvas.mobile-nav .offcanvas-header{padding:20px 24px;border-bottom:1px solid var(--c-line)}
.offcanvas.mobile-nav .offcanvas-body{padding:8px 24px 24px;display:flex;flex-direction:column}
.mobile-nav__link{
  display:block;padding:18px 0;font-size:17px;font-weight:600;color:var(--c-ink);
  border-bottom:1px solid var(--c-line);
}
.mobile-nav__link.is-active{color:var(--c-ink);font-weight:800}
.mobile-nav__link.is-active::before{
  content:"";display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--c-accent);
  margin-right:10px;vertical-align:middle;
}
.mobile-nav__footer{margin-top:auto;padding-top:24px;display:grid;gap:14px}
.mobile-nav__meta{font-size:13px;color:var(--c-muted);line-height:1.75}
.offcanvas-backdrop.show{background:rgba(14,20,17,.5);opacity:1}

/* ============ 滚动进场 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .48s var(--ease),transform .48s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
.stagger>*{opacity:0;transform:translateY(12px);transition:opacity .48s var(--ease),transform .48s var(--ease)}
.stagger.is-in>*{opacity:1;transform:none}
.stagger.is-in>*:nth-child(1){transition-delay:0ms}
.stagger.is-in>*:nth-child(2){transition-delay:60ms}
.stagger.is-in>*:nth-child(3){transition-delay:120ms}
.stagger.is-in>*:nth-child(4){transition-delay:180ms}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}
  .reveal,.stagger>*{opacity:1!important;transform:none!important}
}

/* roulang page: article */
:root{
  --c-ink:#0E1411;
  --c-ink-2:#1B241F;
  --c-paper:#F6F5F1;
  --c-surface:#FFFFFF;
  --c-line:#E3E2DC;
  --c-text:#333A36;
  --c-muted:#6E7A73;
  --c-accent:#C6F24E;
  --c-accent-2:#FF5A28;
  --c-danger:#D8452E;
  --r-sm:12px;
  --r-card:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-card:0 1px 2px rgba(14,20,17,.04), 0 10px 28px -14px rgba(14,20,17,.12);
  --sh-hover:0 1px 2px rgba(14,20,17,.05), 0 18px 34px -14px rgba(14,20,17,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sec-pad:104px;
  --bs-body-font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --bs-font-sans-serif:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --bs-body-bg:#F6F5F1;
  --bs-body-color:#333A36;
  --bs-border-color:#E3E2DC;
  --bs-primary:#C6F24E;
  --bs-primary-rgb:198,242,78;
  --bs-link-color:#0E1411;
  --bs-link-hover-color:#0E1411;
  --bs-border-radius:16px;
  --bs-border-radius-lg:24px;
  --bs-emphasis-color:#0E1411;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-paper);
  color:var(--c-text);
  font-family:var(--bs-body-font-family);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-ink);text-decoration:none;transition:color .24s var(--ease),border-color .24s var(--ease)}
a:hover{color:var(--c-ink)}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:1400px){.container{max-width:1320px}}
h1,h2,h3,h4{color:var(--c-ink);font-weight:800;line-height:1.25;margin:0;letter-spacing:-.01em}
p{margin:0 0 1em}
.eyebrow{display:block;font-size:13px;font-weight:600;letter-spacing:.12em;color:var(--c-muted)}
.section{padding:var(--sec-pad) 0}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:36px}
.sec-title{font-size:clamp(1.5rem,2.4vw,2.1rem);font-weight:800;letter-spacing:-.01em}
.sec-desc{margin-top:14px;font-size:16px;color:var(--c-muted);max-width:660px}
.divider{height:1px;background:var(--c-line);border:0;margin:0}

/* ---------- 顶部与导航 ---------- */
.accent-topline{height:3px;width:100%;background:var(--c-accent)}
.site-header{
  position:sticky;top:0;z-index:1030;background:#fff;
  border-bottom:1px solid transparent;
  transition:box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.site-header.is-scrolled{
  border-bottom-color:var(--c-line);
  box-shadow:0 1px 2px rgba(14,20,17,.04),0 10px 24px -18px rgba(14,20,17,.28);
}
.header-inner{display:flex;align-items:center;gap:24px;height:68px;transition:height .28s var(--ease)}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;margin-right:auto}
.brand__mark{
  width:32px;height:32px;flex:0 0 32px;border-radius:10px;background:var(--c-paper);
  display:inline-flex;align-items:center;justify-content:center;
}
.brand__mark svg{width:22px;height:22px}
.brand__text{font-size:17px;font-weight:800;color:var(--c-ink);letter-spacing:-.01em;white-space:nowrap}
.nav-pill{display:flex;align-items:center;gap:4px}
.nav-pill__link{
  position:relative;padding:9px 16px;border-radius:var(--r-pill);
  font-size:15px;font-weight:500;color:var(--c-text);
  transition:background .24s var(--ease),color .24s var(--ease);
}
.nav-pill__link:hover{background:var(--c-paper);color:var(--c-ink)}
.nav-pill__link.is-active{background:var(--c-paper);color:var(--c-ink);font-weight:700}
.header-actions{display:flex;align-items:center;gap:18px;margin-left:8px}
.header-link{
  font-size:15px;font-weight:600;color:var(--c-text);
  border-bottom:2px solid transparent;padding-bottom:2px;
  transition:border-color .24s var(--ease),color .24s var(--ease);
}
.header-link:hover{border-bottom-color:var(--c-accent);color:var(--c-ink)}
.nav-toggle{
  margin-left:auto;width:44px;height:44px;border:1px solid var(--c-line);background:#fff;
  border-radius:12px;display:inline-flex;flex-direction:column;align-items:center;justify-content:center;
  gap:5px;cursor:pointer;transition:border-color .24s var(--ease),background .24s var(--ease);
}
.nav-toggle:hover{border-color:rgba(14,20,17,.3);background:var(--c-paper)}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--c-ink)}
.offcanvas-backdrop{background-color:rgba(14,20,17,.5)}
.mobile-nav{width:86vw;max-width:360px;background:#fff;border:0}
.mobile-nav .offcanvas-header{border-bottom:1px solid var(--c-line);padding:18px 22px}
.mobile-nav .offcanvas-body{padding:12px 22px 28px;display:flex;flex-direction:column}
.mobile-nav__links{display:flex;flex-direction:column;margin-bottom:24px}
.mobile-nav__links a{
  padding:16px 2px;font-size:18px;font-weight:600;color:var(--c-ink);
  border-bottom:1px solid var(--c-line);
}
.mobile-nav__links a:hover{color:var(--c-accent-2)}
.mobile-nav__note{font-size:13px;line-height:1.8;color:var(--c-muted);margin-top:20px}
.btn-close-mobile{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--c-line);background:#fff;
  font-size:18px;line-height:1;color:var(--c-ink);cursor:pointer;
}
.btn-close-mobile:hover{background:var(--c-paper)}

/* ---------- 按钮 ---------- */
.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--c-accent);color:var(--c-ink);font-weight:700;font-size:15px;
  padding:12px 24px;border:1px solid transparent;border-radius:var(--r-pill);cursor:pointer;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease);
}
.btn-accent:hover{background:#d3f874;color:var(--c-ink);transform:translateY(-1px);box-shadow:0 14px 26px -14px rgba(14,20,17,.45)}
.btn-accent:active{transform:translateY(0)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--c-ink);font-weight:700;font-size:15px;
  padding:11px 22px;border:1px solid rgba(14,20,17,.3);border-radius:var(--r-pill);cursor:pointer;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease);
}
.btn-ghost:hover{background:var(--c-ink);color:var(--c-paper);border-color:var(--c-ink);transform:translateY(-1px)}
.btn-block{width:100%}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:700;color:var(--c-ink)}
.text-link .arrow{transition:transform .24s var(--ease)}
.text-link:hover .arrow{transform:translateX(3px)}

/* ---------- 文章头部 ---------- */
.article-head{background:var(--c-surface);border-bottom:1px solid var(--c-line);padding:36px 0 38px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;letter-spacing:.02em;color:var(--c-muted)}
.crumb a{color:var(--c-muted)}
.crumb a:hover{color:var(--c-ink)}
.crumb__sep{color:#C6C5BE}
.article-title{margin-top:22px;font-size:clamp(1.9rem,3.4vw,2.6rem);line-height:1.2;letter-spacing:-.02em;max-width:940px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:22px;font-size:13px;letter-spacing:.04em;color:var(--c-muted)}
.badge-cat{
  display:inline-flex;align-items:center;background:var(--c-accent-2);color:#fff;
  font-size:11px;font-weight:700;letter-spacing:.06em;padding:5px 12px;border-radius:var(--r-pill);
}
.badge-soft{
  display:inline-flex;align-items:center;background:var(--c-paper);color:var(--c-text);
  border:1px solid var(--c-line);font-size:12px;font-weight:600;letter-spacing:.04em;
  padding:6px 14px;border-radius:var(--r-pill);
}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#C6C5BE;display:inline-block}

/* ---------- 正文布局 ---------- */
.article-main{padding:64px 0 72px}
.article-body{max-width:760px;font-size:17px;line-height:1.9;color:var(--c-text);overflow-wrap:break-word}
.article-body p{margin:0 0 1.4em}
.article-body h2{
  font-size:clamp(1.32rem,2vw,1.6rem);font-weight:800;color:var(--c-ink);
  margin:2.4em 0 .9em;padding-left:14px;border-left:4px solid var(--c-accent);line-height:1.4;
}
.article-body h3{font-size:1.15rem;font-weight:700;color:var(--c-ink);margin:1.9em 0 .6em;line-height:1.5}
.article-body h4{font-size:1.02rem;font-weight:700;color:var(--c-ink);margin:1.6em 0 .5em}
.article-body ul,.article-body ol{padding-left:1.25em;margin:0 0 1.4em}
.article-body li{margin-bottom:12px}
.article-body blockquote{
  margin:1.7em 0;padding:20px 22px;background:var(--c-paper);
  border-left:4px solid var(--c-accent-2);border-radius:0 12px 12px 0;color:var(--c-ink);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:14px;margin:1.7em auto}
.article-body figure{margin:1.7em 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--c-muted);margin-top:12px}
.article-body a{color:var(--c-ink);border-bottom:2px solid var(--c-accent)}
.article-body a:hover{border-bottom-color:var(--c-ink)}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:1.6em 0}
.article-body th{
  background:var(--c-paper);text-align:left;font-weight:700;color:var(--c-ink);
  padding:14px 16px;border-bottom:1px solid var(--c-line);
}
.article-body td{padding:14px 16px;border-bottom:1px solid var(--c-line)}
.article-body tbody tr:nth-child(even){background:#FBFAF7}
.article-body code{background:var(--c-paper);border:1px solid var(--c-line);border-radius:6px;padding:2px 6px;font-size:14px}

.empty-state{border:1px dashed var(--c-line);border-radius:var(--r-card);background:#fff;padding:56px 24px;text-align:center}
.empty-state__icon{
  width:46px;height:46px;margin:0 auto 18px;border:2px solid var(--c-line);border-radius:50%;
  position:relative;
}
.empty-state__icon::after{
  content:"";position:absolute;left:50%;top:50%;width:16px;height:2px;background:var(--c-line);
  transform:translate(-50%,-50%);
}
.empty-state p{color:var(--c-muted);margin:0 0 20px}

/* ---------- 正文底部 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:44px}
.link-cards{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px}
.link-card{
  display:flex;flex-direction:column;gap:8px;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:22px 24px;box-shadow:var(--sh-card);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.link-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:rgba(14,20,17,.2)}
.link-card__label{font-size:12px;letter-spacing:.06em;color:var(--c-muted)}
.link-card__title{font-size:1.05rem;font-weight:700;color:var(--c-ink);line-height:1.5}
.link-card__desc{font-size:14px;color:var(--c-muted);line-height:1.75}
.back-row{margin-top:32px;display:flex;flex-wrap:wrap;gap:12px;align-items:center}

/* ---------- 侧栏 ---------- */
.side-sticky{position:sticky;top:96px}
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-card);margin-bottom:20px;
}
.side-card h3{font-size:1.05rem;font-weight:700;margin-bottom:16px}
.side-card--dark{background:var(--c-ink);border-color:rgba(255,255,255,.12);box-shadow:none;color:#D5DAD5}
.side-card--dark h3{color:#fff}
.side-card--dark p{font-size:14px;line-height:1.85;color:#A8B0AA;margin:0}
.check-list{list-style:none;margin:0;padding:0}
.check-list li{
  position:relative;padding:11px 0 11px 26px;font-size:14.5px;line-height:1.7;
  color:var(--c-text);border-bottom:1px solid var(--c-line);
}
.check-list li:last-child{border-bottom:0;padding-bottom:0}
.check-list li::before{
  content:"";position:absolute;left:0;top:18px;width:12px;height:7px;
  border-left:2px solid var(--c-accent-2);border-bottom:2px solid var(--c-accent-2);
  transform:rotate(-45deg);
}
.mini-list{display:flex;flex-direction:column;gap:6px;margin:0 -10px}
.mini-card{display:flex;align-items:center;gap:14px;padding:10px;border-radius:12px;transition:background .24s var(--ease)}
.mini-card:hover{background:var(--c-paper)}
.mini-card__thumb{width:76px;flex:0 0 76px;aspect-ratio:16/10;border-radius:10px;overflow:hidden;background:#E9E8E2}
.mini-card__thumb img{width:100%;height:100%;object-fit:cover}
.mini-card__title{font-size:14px;font-weight:700;color:var(--c-ink);line-height:1.5}
.mini-card__meta{font-size:12px;color:var(--c-muted);margin-top:2px}

/* ---------- FAQ ---------- */
.section--surface{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.faq-list{border-top:1px solid var(--c-line);max-width:900px}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-h{margin:0;font-size:1.05rem;font-weight:700}
.faq-q{
  position:relative;width:100%;display:block;text-align:left;background:none;border:0;
  padding:22px 52px 22px 0;font-size:1.05rem;font-weight:700;color:var(--c-ink);line-height:1.55;
  cursor:pointer;transition:color .24s var(--ease);
}
.faq-q:hover{color:var(--c-ink)}
.faq-q::before,.faq-q::after{
  content:"";position:absolute;right:14px;top:50%;background:var(--c-ink);border-radius:2px;
  transition:transform .28s var(--ease),opacity .28s var(--ease);
}
.faq-q::before{width:14px;height:2px;transform:translateY(-50%)}
.faq-q::after{width:2px;height:14px;transform:translateY(-50%)}
.faq-q[aria-expanded="true"]::after{transform:translateY(-50%) scaleY(0)}
.faq-a{padding:0 52px 24px 0;font-size:15.5px;line-height:1.85;color:var(--c-text)}
.faq-a p:last-child{margin-bottom:0}

/* ---------- 延伸阅读 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.rcard{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.rcard:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:rgba(14,20,17,.2)}
.rcard__media{aspect-ratio:16/10;overflow:hidden;background:#E9E8E2}
.rcard__media img{width:100%;height:100%;object-fit:cover;transition:transform .48s var(--ease)}
.rcard:hover .rcard__media img{transform:scale(1.03)}
.rcard__body{display:flex;flex-direction:column;gap:10px;flex:1;padding:22px 24px 24px}
.rcard__body h3{font-size:1.08rem;font-weight:700;line-height:1.5}
.rcard__body p{font-size:14.5px;color:var(--c-muted);line-height:1.8;margin:0}
.rcard__body .text-link{margin-top:auto;padding-top:6px;font-size:14px}

/* ---------- 表单 ---------- */
.cta-panel{background:var(--c-ink);border-radius:var(--r-lg);padding:56px}
.cta-panel h2{color:#fff;font-size:clamp(1.5rem,2.4vw,2.05rem);font-weight:800}
.cta-panel .cta-lead{margin-top:16px;font-size:15.5px;line-height:1.9;color:#A8B0AA;max-width:420px}
.cta-points{display:grid;gap:18px;margin-top:32px;list-style:none;padding:0}
.cta-points li{display:flex;gap:14px;align-items:flex-start}
.cta-point__icon{
  width:34px;height:34px;flex:0 0 34px;border-radius:50%;background:var(--c-accent);
  display:inline-flex;align-items:center;justify-content:center;
}
.cta-point__icon svg{width:16px;height:16px}
.cta-point__title{display:block;font-size:15px;font-weight:700;color:#fff;line-height:1.5}
.cta-point__desc{display:block;font-size:13.5px;color:#9AA39C;line-height:1.7;margin-top:2px}
.form-card{background:#fff;border-radius:var(--r-card);padding:32px;box-shadow:var(--sh-card)}
.form-card__title{font-size:1.2rem;font-weight:800;margin-bottom:6px}
.form-card__note{font-size:13.5px;color:var(--c-muted);margin-bottom:24px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--c-muted);margin-bottom:8px;letter-spacing:.02em}
.field input,.field select,.field textarea{
  width:100%;height:50px;border:1px solid var(--c-line);border-radius:var(--r-sm);
  background:#fff;padding:0 14px;color:var(--c-ink);
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.field textarea{height:auto;min-height:120px;padding:12px 14px;line-height:1.75;resize:vertical}
.field select{
  appearance:none;-webkit-appearance:none;padding-right:42px;cursor:pointer;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='9' viewBox='0 0 14 9'%3E%3Cpath d='M1 1l6 6 6-6' fill='none' stroke='%236E7A73' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 16px center;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(198,242,78,.35);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{
  border-color:var(--c-danger);box-shadow:0 0 0 3px rgba(216,69,46,.14);
}
.field-error{display:none;font-size:13px;color:var(--c-danger);margin-top:6px}
.field.has-error .field-error{display:block}
.form-foot{margin-top:6px}
.form-tip{font-size:12.5px;color:var(--c-muted);margin-top:14px;line-height:1.7}
.form-result{
  display:none;margin-top:16px;padding:14px 16px;border-radius:var(--r-sm);
  background:rgba(198,242,78,.28);border:1px solid rgba(14,20,17,.08);
  font-size:14px;color:var(--c-ink);
}
.form-result.is-visible{display:block}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:#B9C1BB;padding:72px 0 28px;margin-top:0}
.site-footer h3{color:#fff;font-size:15px;font-weight:700;letter-spacing:.02em;margin-bottom:18px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand__mark{background:rgba(255,255,255,.08)}
.footer-brand .brand__text{color:#fff}
.footer-desc{font-size:14px;line-height:1.85;color:#9AA39C;max-width:330px;margin:0}
.footer-links,.footer-contact{list-style:none;margin:0;padding:0}
.footer-links li{margin-bottom:12px}
.footer-links a{font-size:14px;color:#B9C1BB;position:relative}
.footer-links a:hover{color:var(--c-accent)}
.footer-contact li{font-size:14px;line-height:1.8;color:#9AA39C;margin-bottom:14px}
.footer-contact strong{color:#E6EAE6;font-weight:600}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  border-top:1px solid rgba(255,255,255,.12);margin-top:48px;padding-top:24px;
  font-size:13px;color:#8E9791;
}

/* ---------- 进场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .48s var(--ease),transform .48s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  :root{--sec-pad:80px}
  .side-sticky{position:static}
}
@media (max-width:991.98px){
  :root{--sec-pad:80px}
  .article-main{padding:48px 0 56px}
  .cta-panel{padding:36px 28px}
  .related-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767.98px){
  :root{--sec-pad:56px}
  body{font-size:15.5px;line-height:1.8}
  .article-body{font-size:16px;line-height:1.85}
  .article-head{padding:28px 0 28px}
  .article-title{margin-top:16px}
  .link-cards{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .site-footer{padding:56px 0 24px}
}
@media (max-width:575.98px){
  .btn-accent,.btn-ghost{width:100%}
  .back-row .btn-ghost{width:100%}
  .form-card{padding:24px 20px}
  .cta-panel{padding:28px 20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --c-ink:#0E1411;
  --c-ink-2:#1B241F;
  --c-paper:#F6F5F1;
  --c-surface:#FFFFFF;
  --c-line:#E3E2DC;
  --c-text:#333A36;
  --c-muted:#6E7A73;
  --c-accent:#C6F24E;
  --c-accent-soft:#dcfa8e;
  --c-accent-2:#FF5A28;
  --c-danger:#D8452E;
  --c-img-fallback:#E9E8E2;

  --r-pill:999px;
  --r-card:16px;
  --r-lg:24px;
  --r-input:12px;

  --shadow-card:0 1px 2px rgba(14,20,17,.04), 0 10px 28px -14px rgba(14,20,17,.12);
  --shadow-card-hover:0 2px 4px rgba(14,20,17,.05), 0 16px 34px -14px rgba(14,20,17,.18);
  --shadow-nav:0 1px 0 var(--c-line), 0 8px 24px -18px rgba(14,20,17,.35);

  --ease:cubic-bezier(.22,.61,.36,1);

  --bs-primary:#0E1411;
  --bs-primary-rgb:14,20,17;
  --bs-body-color:#333A36;
  --bs-body-bg:#F6F5F1;
  --bs-border-color:#E3E2DC;
  --bs-link-color:#0E1411;
  --bs-link-hover-color:#0E1411;
  --bs-font-sans-serif:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}

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

html{
  scroll-behavior:smooth;
  scroll-padding-top:96px;
  -webkit-text-size-adjust:100%;
}

body{
  margin:0;
  background:var(--c-paper);
  color:var(--c-text);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;height:auto;display:block}
a{color:var(--c-ink);text-decoration:none;transition:color .24s var(--ease)}
a:hover{color:var(--c-ink)}
button{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}

.container{max-width:1200px;padding-left:20px;padding-right:20px}
@media (min-width:1400px){
  .container{max-width:1320px}
}

/* ---------- 通用板块 ---------- */
.sec{padding:104px 0}
.sec--tight{padding:72px 0}
.sec--paper{background:var(--c-paper)}
.sec--white{background:var(--c-surface)}
.sec-head{margin-bottom:40px;max-width:760px}
.sec-num{
  display:block;
  font-size:13px;
  letter-spacing:.12em;
  color:var(--c-muted);
  font-weight:500;
  margin-bottom:12px;
}
.sec-title{
  font-size:clamp(1.5rem,2.4vw,2.1rem);
  font-weight:800;
  letter-spacing:-.01em;
  line-height:1.25;
  color:var(--c-ink);
}
.sec-sub{margin-top:14px;font-size:16px;color:var(--c-muted);line-height:1.85}

/* ---------- 按钮 ---------- */
.btn-pill,
.btn-pill:visited{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:var(--r-pill);
  font-weight:700;
  font-size:15px;
  line-height:1;
  padding:14px 26px;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .24s var(--ease),background-color .24s var(--ease),box-shadow .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
}
.btn-accent{
  background:var(--c-accent);
  color:var(--c-ink);
  box-shadow:var(--shadow-card);
}
.btn-accent:hover{
  background:var(--c-accent-soft);
  color:var(--c-ink);
  transform:translateY(-1px);
  box-shadow:var(--shadow-card-hover);
}
.btn-accent:active{transform:translateY(0);box-shadow:var(--shadow-card)}
.btn-ghost{
  background:transparent;
  border-color:rgba(14,20,17,.3);
  color:var(--c-ink);
}
.btn-ghost:hover{
  background:var(--c-ink);
  border-color:var(--c-ink);
  color:var(--c-paper);
  transform:translateY(-1px);
}
.btn-ghost:active{transform:translateY(0)}
.btn-ghost--light{
  border-color:rgba(246,245,241,.4);
  color:var(--c-paper);
}
.btn-ghost--light:hover{background:var(--c-paper);color:var(--c-ink);border-color:var(--c-paper)}
.btn-block{width:100%}

.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:700;
  color:var(--c-ink);
  border-bottom:1px solid transparent;
}
.link-arrow span{transition:transform .28s var(--ease)}
.link-arrow:hover span{transform:translateX(3px)}
.link-arrow:hover{color:var(--c-ink)}

/* ---------- 徽章 ---------- */
.badge-soft,
.badge-accent{
  display:inline-flex;
  align-items:center;
  border-radius:var(--r-pill);
  font-size:11.5px;
  letter-spacing:.06em;
  padding:5px 12px;
  font-weight:500;
  line-height:1.5;
}
.badge-soft{background:var(--c-paper);color:var(--c-muted);border:1px solid var(--c-line)}
.badge-accent{background:var(--c-accent-2);color:#fff}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1035;
  background:transparent;
}
.nav-topline{height:3px;background:var(--c-accent);width:100%}
.nav-bar{
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background-color .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled .nav-bar{
  border-bottom-color:var(--c-line);
  box-shadow:0 10px 28px -22px rgba(14,20,17,.55);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:68px;
  transition:height .3s var(--ease);
}
.site-header.is-scrolled .nav-inner{height:60px}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.brand__mark{
  width:34px;height:34px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-paper);
  border-radius:10px;
  border:1px solid var(--c-line);
  flex:0 0 34px;
}
.brand__mark svg{width:22px;height:22px}
.brand__text{
  font-size:17px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--c-ink);
  white-space:nowrap;
}

.nav-pill{
  display:flex;
  align-items:center;
  gap:4px;
  margin:0 auto;
}
.nav-pill__link{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--c-text);
  padding:9px 16px;
  border-radius:var(--r-pill);
  transition:background-color .24s var(--ease),color .24s var(--ease);
  white-space:nowrap;
}
.nav-pill__link::after{
  content:"";
  position:absolute;
  left:16px;right:16px;bottom:5px;
  height:2px;
  background:var(--c-accent);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .32s var(--ease);
}
.nav-pill__link:hover{color:var(--c-ink)}
.nav-pill__link:hover::after{transform:scaleX(1)}
.nav-pill__link.is-active{
  background:var(--c-paper);
  color:var(--c-ink);
  font-weight:700;
}
.nav-pill__link.is-active::after{transform:scaleX(0)}

.nav-actions{
  display:flex;
  align-items:center;
  gap:18px;
  flex:0 0 auto;
}
.nav-actions .btn-pill{padding:11px 20px;font-size:14px}
.nav-quiet{
  font-size:14px;
  color:var(--c-muted);
  font-weight:500;
  border-bottom:1px solid transparent;
}
.nav-quiet:hover{color:var(--c-ink);border-bottom-color:var(--c-accent)}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--c-line);
  background:var(--c-surface);
  border-radius:12px;
  padding:0;
  cursor:pointer;
  position:relative;
  flex:0 0 44px;
}
.nav-toggle span{
  position:absolute;
  left:12px;
  width:20px;height:2px;
  background:var(--c-ink);
  border-radius:2px;
  transition:transform .3s var(--ease),opacity .3s var(--ease);
}
.nav-toggle span:nth-child(1){top:17px}
.nav-toggle span:nth-child(2){bottom:17px}

/* Offcanvas 抽屉 */
.nav-drawer{
  width:86vw;
  max-width:360px;
  background:var(--c-surface);
  border-left:1px solid var(--c-line);
}
.nav-drawer .offcanvas-header{
  padding:22px 24px;
  border-bottom:1px solid var(--c-line);
}
.nav-drawer .offcanvas-body{padding:8px 0 0;display:flex;flex-direction:column}
.drawer-link{
  display:block;
  padding:18px 24px;
  font-size:16px;
  font-weight:500;
  color:var(--c-text);
  border-bottom:1px solid var(--c-line);
}
.drawer-link.is-active{color:var(--c-ink);font-weight:700;background:var(--c-paper)}
.drawer-foot{
  margin-top:auto;
  padding:24px;
  border-top:1px solid var(--c-line);
  background:var(--c-paper);
}
.drawer-foot .btn-pill{width:100%}
.drawer-foot p{font-size:13px;color:var(--c-muted);margin-top:12px;line-height:1.7}
.offcanvas-backdrop.show{opacity:1;background:rgba(14,20,17,.5)}

/* ---------- Hero（分类二版式） ---------- */
.hero-cat2{
  position:relative;
  overflow:hidden;
  background:var(--c-paper);
  padding:76px 0 88px;
  border-bottom:1px solid var(--c-line);
}
.hero-cat2::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(90deg, rgba(14,20,17,.055) 1px, transparent 1px),
    linear-gradient(0deg, rgba(14,20,17,.055) 1px, transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(120% 90% at 78% 25%, #000 0%, rgba(0,0,0,.35) 55%, transparent 88%);
  mask-image:radial-gradient(120% 90% at 78% 25%, #000 0%, rgba(0,0,0,.35) 55%, transparent 88%);
  pointer-events:none;
}
.hero-cat2::after{
  content:"";
  position:absolute;
  right:-120px;
  top:-140px;
  width:420px;height:420px;
  border-radius:50%;
  border:1px solid rgba(255,90,40,.28);
  box-shadow:inset 0 0 0 1px rgba(198,242,78,.22);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  z-index:1;
  display:flex;
  align-items:flex-start;
  gap:44px;
}
.hero-rail{
  flex:0 0 auto;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:16px;
  padding-top:6px;
}
.hero-rail__label{
  writing-mode:vertical-rl;
  letter-spacing:.34em;
  font-size:13px;
  color:var(--c-muted);
  font-weight:500;
  padding:4px 0;
}
.hero-rail__line{
  width:1px;
  flex:1 1 auto;
  min-height:60px;
  background:linear-gradient(180deg,var(--c-accent-2),rgba(255,90,40,0));
}
.hero-main{flex:1 1 auto;max-width:820px}
.hero-cat2 h1{
  font-size:clamp(2.1rem,4.6vw,3.2rem);
  font-weight:800;
  line-height:1.12;
  letter-spacing:-.02em;
  color:var(--c-ink);
}
.hero-cat2 h1 .hl{
  color:var(--c-ink);
  background:linear-gradient(180deg,transparent 62%,var(--c-accent) 62%,var(--c-accent) 94%,transparent 94%);
  padding:0 2px;
}
.hero-lead{
  margin-top:22px;
  font-size:17.5px;
  color:var(--c-text);
  max-width:640px;
  line-height:1.9;
}
.hero-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:24px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:32px;
}
.hero-facts{
  display:flex;
  flex-wrap:wrap;
  gap:0;
  margin-top:44px;
  border-top:1px solid var(--c-line);
  padding-top:24px;
}
.hero-fact{
  flex:1 1 0;
  min-width:150px;
  padding-right:24px;
  border-right:1px solid var(--c-line);
  margin-right:24px;
}
.hero-fact:last-child{border-right:0;margin-right:0;padding-right:0}
.hero-fact b{
  display:block;
  font-size:26px;
  font-weight:700;
  color:var(--c-ink);
  letter-spacing:-.01em;
  font-variant-numeric:tabular-nums;
  line-height:1.3;
}
.hero-fact span{font-size:13.5px;color:var(--c-muted);letter-spacing:.02em}

/* ---------- 页内目录 ---------- */
.page-toc{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:26px 24px;
  box-shadow:var(--shadow-card);
}
.page-toc__title{
  font-size:13px;
  letter-spacing:.12em;
  color:var(--c-muted);
  text-transform:uppercase;
  margin-bottom:6px;
}
.page-toc__list li a{
  display:block;
  font-size:15px;
  color:var(--c-text);
  padding:11px 0 11px 16px;
  border-left:2px solid var(--c-line);
  transition:color .24s var(--ease),border-color .24s var(--ease),padding-left .24s var(--ease);
}
.page-toc__list li a:hover{color:var(--c-ink);border-left-color:var(--c-ink);padding-left:20px}
.page-toc__list li a.is-current{
  color:var(--c-ink);
  font-weight:700;
  border-left-color:var(--c-accent-2);
}
.page-toc__foot{
  margin-top:18px;
  padding-top:18px;
  border-top:1px solid var(--c-line);
}

/* ---------- 内容区 ---------- */
.cat-body{padding:96px 0 104px;background:var(--c-surface)}
.cat-section + .cat-section{margin-top:88px}

/* 能力网格 */
.ability-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
}
.ability-item{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:26px 24px;
  box-shadow:var(--shadow-card);
  transition:border-color .28s var(--ease),box-shadow .28s var(--ease),transform .28s var(--ease);
}
.ability-item:hover{
  border-color:rgba(14,20,17,.2);
  box-shadow:var(--shadow-card-hover);
  transform:translateY(-2px);
}
.ability-item__ico{
  width:40px;height:40px;
  border-radius:12px;
  background:var(--c-paper);
  border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:16px;
}
.ability-item__ico svg{width:20px;height:20px}
.ability-item h3{
  font-size:1.05rem;
  font-weight:700;
  color:var(--c-ink);
  line-height:1.4;
  margin-bottom:10px;
}
.ability-item p{font-size:15px;color:var(--c-text);line-height:1.85}

/* 图文交替 */
.alter{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:40px;
  align-items:center;
}
.alter + .alter{margin-top:64px}
.alter__media{
  border-radius:14px;
  overflow:hidden;
  background:var(--c-img-fallback);
  aspect-ratio:16 / 10;
}
.alter__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.alter:hover .alter__media img{transform:scale(1.03)}
.alter__body h3{
  font-size:1.25rem;
  font-weight:700;
  color:var(--c-ink);
  line-height:1.4;
  margin-bottom:12px;
}
.alter__body p{font-size:15.5px;line-height:1.9;color:var(--c-text)}
.alter__body p + p{margin-top:12px}
.alter--flip .alter__media{order:2}

/* 步骤 */
.steps{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;
  margin-top:8px;
}
.step{
  position:relative;
  padding:34px 22px 0 0;
}
.step::before{
  content:"";
  position:absolute;
  top:20px;left:40px;right:0;
  height:1px;
  background:var(--c-line);
}
.step:last-child::before{display:none}
.step__num{
  position:relative;
  z-index:1;
  width:40px;height:40px;
  border-radius:50%;
  background:var(--c-accent);
  color:var(--c-ink);
  font-weight:700;
  font-size:14px;
  display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
  margin-bottom:18px;
}
.step h3{font-size:1.02rem;font-weight:700;color:var(--c-ink);margin-bottom:8px;line-height:1.45}
.step p{font-size:14.5px;color:var(--c-muted);line-height:1.8}

/* 深色数据块 */
.deep-quote{
  background:var(--c-ink);
  border-radius:var(--r-lg);
  padding:44px 40px;
  color:var(--c-paper);
  display:flex;
  align-items:center;
  gap:36px;
  border:1px solid rgba(246,245,241,.12);
}
.deep-quote__num{
  font-size:clamp(2.4rem,4vw,3.4rem);
  font-weight:700;
  color:var(--c-accent);
  line-height:1;
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
  flex:0 0 auto;
}
.deep-quote__txt{flex:1 1 auto}
.deep-quote__txt p{font-size:15.5px;line-height:1.9;color:rgba(246,245,241,.82)}
.deep-quote__txt p strong{color:var(--c-paper);font-weight:700}

/* FAQ */
.faq-accordion{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item .accordion-button{
  width:100%;
  background:transparent;
  border:0;
  box-shadow:none;
  padding:22px 0;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:20px;
  font-size:1.05rem;
  font-weight:700;
  color:var(--c-ink);
  line-height:1.55;
  text-align:left;
  border-radius:0;
}
.faq-item .accordion-button:not(.collapsed){color:var(--c-ink)}
.faq-item .accordion-button:focus{box-shadow:none;outline:2px solid var(--c-accent);outline-offset:2px}
.faq-item .accordion-button::after{display:none}
.faq-icon{
  position:relative;
  width:20px;height:20px;
  flex:0 0 20px;
  margin-top:5px;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--c-ink);
  border-radius:2px;
  transition:transform .3s var(--ease),opacity .3s var(--ease);
}
.faq-icon::before{left:0;top:9px;width:20px;height:2px}
.faq-icon::after{left:9px;top:0;width:2px;height:20px}
.accordion-button:not(.collapsed) .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-item .accordion-body{
  padding:0 0 24px;
  font-size:15.5px;
  line-height:1.9;
  color:var(--c-text);
  max-width:680px;
}

/* 表单 */
.form-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:32px;
  box-shadow:var(--shadow-card);
}
.field{margin-bottom:18px}
.field label{
  display:block;
  font-size:13px;
  letter-spacing:.04em;
  color:var(--c-muted);
  font-weight:500;
  margin-bottom:8px;
}
.form-control,
.form-select{
  width:100%;
  height:50px;
  border-radius:var(--r-input);
  border:1px solid var(--c-line);
  background:var(--c-surface);
  font-size:15px;
  color:var(--c-ink);
  padding:0 16px;
  box-shadow:none;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.form-select{
  appearance:none;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none'%3E%3Cpath d='M3.5 6l4.5 4.5L12.5 6' stroke='%236E7A73' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:right 16px center;
  background-size:16px 16px;
  padding-right:44px;
}
textarea.form-control{
  height:auto;
  min-height:120px;
  padding:14px 16px;
  line-height:1.75;
  resize:vertical;
}
.form-control:focus,
.form-select:focus{
  border-color:var(--c-accent);
  box-shadow:0 0 0 3px rgba(198,242,78,.35);
  outline:none;
}
.form-control::placeholder{color:#9AA49E}
.field.has-error .form-control,
.field.has-error .form-select{border-color:var(--c-danger)}
.field.has-error .form-control:focus,
.field.has-error .form-select:focus{box-shadow:0 0 0 3px rgba(216,69,46,.18)}
.field-error{
  display:none;
  font-size:13px;
  color:var(--c-danger);
  margin-top:6px;
}
.field.has-error .field-error{display:block}
.form-note{font-size:13px;color:var(--c-muted);margin-top:14px;line-height:1.7}
.form-feedback{
  display:none;
  margin-top:16px;
  padding:14px 16px;
  border-radius:var(--r-input);
  background:var(--c-paper);
  border:1px solid var(--c-line);
  font-size:14px;
  color:var(--c-ink);
}
.form-feedback.is-show{display:block}
.form-intro ul{margin-top:20px}
.form-intro li{
  display:flex;
  gap:14px;
  padding:16px 0;
  border-bottom:1px solid var(--c-line);
}
.form-intro li:last-child{border-bottom:0}
.form-intro__ico{
  flex:0 0 36px;
  width:36px;height:36px;
  border-radius:10px;
  background:var(--c-paper);
  border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;
}
.form-intro__ico svg{width:18px;height:18px}
.form-intro strong{display:block;font-size:15px;font-weight:700;color:var(--c-ink);margin-bottom:4px}
.form-intro span{font-size:14px;color:var(--c-muted);line-height:1.75}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-ink);
  color:rgba(246,245,241,.78);
  padding:72px 0 28px;
  margin-top:0;
}
.site-footer h3{
  font-size:14px;
  letter-spacing:.06em;
  color:var(--c-paper);
  font-weight:700;
  margin-bottom:18px;
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
}
.footer-brand .brand__mark{
  background:rgba(246,245,241,.08);
  border-color:rgba(246,245,241,.18);
}
.footer-brand .brand__text{color:var(--c-paper)}
.footer-desc{
  font-size:14px;
  line-height:1.9;
  color:rgba(246,245,241,.68);
  max-width:320px;
}
.footer-links li{margin-bottom:12px}
.footer-links a{
  font-size:14.5px;
  color:rgba(246,245,241,.78);
  border-bottom:1px solid transparent;
  transition:color .24s var(--ease),border-color .24s var(--ease);
}
.footer-links a:hover{color:var(--c-paper);border-bottom-color:var(--c-accent)}
.footer-contact li{
  font-size:14px;
  line-height:1.9;
  color:rgba(246,245,241,.7);
  margin-bottom:12px;
}
.footer-contact strong{color:var(--c-paper);font-weight:600}
.footer-bottom{
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid rgba(246,245,241,.14);
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:13px;
  color:rgba(246,245,241,.55);
  letter-spacing:.02em;
}

/* ---------- 进场动效 ---------- */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .48s var(--ease),transform .48s var(--ease);
}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .hero-cat2{padding:64px 0 72px}
  .cat-body{padding:80px 0 88px}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:0 24px}
  .step{padding-top:28px}
  .step:nth-child(2n)::before{display:none}
}
@media (max-width:991.98px){
  .sec{padding:80px 0}
  .sec--tight{padding:64px 0}
  .nav-pill,.nav-actions{display:none}
  .nav-toggle{display:block}
  .hero-grid{gap:24px}
  .page-toc{position:static;margin-bottom:8px}
  .page-toc__list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 18px}
  .cat-body{padding:64px 0 80px}
  .cat-section + .cat-section{margin-top:64px}
  .alter{gap:28px}
  .deep-quote{flex-direction:column;align-items:flex-start;gap:18px;padding:36px 28px}
}
@media (max-width:767.98px){
  body{font-size:16px}
  .sec{padding:56px 0}
  .sec--tight{padding:48px 0}
  .hero-cat2{padding:48px 0 56px}
  .hero-cat2 h1{font-size:clamp(1.9rem,7vw,2.3rem)}
  .hero-rail{display:none}
  .hero-facts{padding-top:20px;margin-top:32px}
  .hero-fact{flex:1 1 45%;border-right:0;margin-right:0;padding:0 0 16px}
  .hero-fact b{font-size:22px}
  .ability-grid{grid-template-columns:minmax(0,1fr)}
  .alter{grid-template-columns:minmax(0,1fr);gap:20px}
  .alter--flip .alter__media{order:0}
  .steps{grid-template-columns:minmax(0,1fr);gap:0}
  .step{padding:24px 0 0}
  .step::before{display:none}
  .page-toc__list{grid-template-columns:minmax(0,1fr)}
  .form-card{padding:24px}
  .cat-body{padding:56px 0 64px}
  .cat-section + .cat-section{margin-top:56px}
  .site-footer{padding:56px 0 24px}
  .footer-desc{max-width:none}
}
@media (max-width:575.98px){
  .hero-actions{flex-direction:column;align-items:stretch;gap:12px}
  .hero-actions .btn-pill{width:100%}
  .hero-tags{gap:8px}
  .deep-quote{padding:28px 22px}
}

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