/* roulang page: index */
/* ============ 设计令牌 ============ */
:root{
  --ink:#0E2B24;
  --ink-2:#164136;
  --accent:#E8552F;
  --paper:#F5F4F1;
  --mist:#C9D8CE;
  --white:#FFFFFF;
  --t1:#14171A;
  --t2:#3A403C;
  --t3:#7A827C;
  --line:rgba(14,43,36,.12);
  --line-2:rgba(255,255,255,.14);
  --r-card:12px;
  --r-input:9px;
  --r-pill:999px;
  --sh:0 8px 28px rgba(14,43,36,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sec-y:clamp(64px,9vw,128px);

  --bs-body-bg:#F5F4F1;
  --bs-body-color:#3A403C;
  --bs-primary:#0E2B24;
  --bs-primary-rgb:14,43,36;
  --bs-border-color:rgba(14,43,36,.12);
  --bs-border-radius:12px;
  --bs-link-color:#0E2B24;
  --bs-link-hover-color:#E8552F;
  --bs-font-sans-serif:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}

/* ============ 基础 ============ */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--t2);
  font-family:var(--bs-font-sans-serif);
  font-size:16.5px;
  line-height:1.9;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:700;line-height:1.22;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
::selection{background:var(--accent);color:#fff}

/* ============ 容器与板块 ============ */
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1400px){.wrap{max-width:1320px}}
@media (max-width:575.98px){.wrap{padding:0 18px}}

.sec{padding:var(--sec-y) 0}
.sec--tight{padding:clamp(48px,6vw,84px) 0}
.sec--dark{background:var(--ink);color:rgba(245,244,241,.72)}
.sec--dark h2,.sec--dark h3{color:#F5F4F1}
.sec--mist{background:#EFF2EE}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:.08em;color:var(--accent);
  font-weight:600;margin-bottom:18px;text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent);display:block}
.sec--dark .eyebrow{color:#F0A28C}

.sec-head{max-width:760px;margin-bottom:clamp(32px,4vw,56px)}
.sec-head h2{font-size:clamp(1.8rem,3.4vw,2.8rem);font-weight:700}
.sec-head p{margin-top:16px;color:var(--t3);font-size:16px}
.sec--dark .sec-head p{color:rgba(245,244,241,.6)}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head--center .eyebrow{justify-content:center}

/* ============ 按钮 ============ */
.btn-ink,.btn-ghost,.btn-outline,.btn-light{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:52px;padding:0 30px;border-radius:var(--r-pill);
  font-size:16px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
  white-space:nowrap;
}
.btn-ink{background:var(--ink);color:#F5F4F1;border-color:var(--ink)}
.btn-ink:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-outline:hover{background:var(--ink);color:#F5F4F1}
.btn-light{background:#F5F4F1;color:var(--ink);border-color:#F5F4F1}
.btn-light:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.btn-ghost{background:transparent;color:#F5F4F1;border-color:rgba(245,244,241,.42)}
.btn-ghost:hover{border-color:var(--accent);color:#F0A28C}
.btn-ink .arw,.btn-ghost .arw,.btn-light .arw,.btn-outline .arw{transition:transform .2s var(--ease)}
.btn-ink:hover .arw,.btn-ghost:hover .arw,.btn-light:hover .arw,.btn-outline:hover .arw{transform:translateX(6px)}
.btn-sm{height:42px;padding:0 22px;font-size:15px}

.text-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--ink);
  font-weight:600;font-size:15px;
  border-bottom:1px solid rgba(14,43,36,.28);
  padding-bottom:2px;transition:color .2s var(--ease),border-color .2s var(--ease);
}
.text-link:hover{color:var(--accent);border-color:var(--accent)}
.text-link .arw{transition:transform .2s var(--ease)}
.text-link:hover .arw{transform:translateX(5px)}

/* ============ 标签 ============ */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 12px;border-radius:var(--r-pill);
  background:var(--mist);color:var(--ink);
  font-size:12.5px;font-weight:600;letter-spacing:.03em;line-height:1.7;
}
.tag--accent{background:rgba(232,85,47,.12);color:#B93B1B}
.tag--ghost{background:transparent;border:1px solid var(--line);color:var(--t3)}

/* ============ 页头导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  --hdr-fg:#F5F4F1;
  background:transparent;
  transition:background .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-stuck{
  --hdr-fg:#14171A;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  box-shadow:0 2px 18px rgba(14,43,36,.05);
}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;
  align-items:center;gap:20px;height:76px;
  transition:height .3s var(--ease);
}
.site-header.is-stuck .header-inner{height:64px}
.nav-side{display:flex;align-items:center;gap:30px}
.nav-side--left{justify-self:start}
.nav-side--right{justify-self:end;gap:22px}
.nav-link-item{
  position:relative;color:var(--hdr-fg);opacity:.82;
  font-size:15.5px;font-weight:500;padding:5px 1px;
}
.nav-link-item::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-link-item:hover{opacity:1}
.nav-link-item:hover::after,.nav-link-item.active::after{transform:scaleX(1)}
.nav-link-item.active{opacity:1;font-weight:600}

.brand{display:flex;align-items:center;gap:11px;justify-self:center;color:var(--hdr-fg)}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;
  background:var(--ink);color:#F5F4F1;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 0 1px rgba(245,244,241,.16);
  transition:background .25s var(--ease);
}
.site-header.is-stuck .brand-mark{background:var(--ink);box-shadow:none}
.brand-mark svg{display:block}
.brand-text{display:flex;flex-direction:column;line-height:1.08}
.brand-line1{font-size:16px;font-weight:800;letter-spacing:.06em}
.brand-line2{font-size:10.5px;letter-spacing:.14em;opacity:.7;text-transform:lowercase}
.nav-cta{
  display:inline-flex;align-items:center;gap:7px;height:40px;padding:0 20px;
  border-radius:var(--r-pill);background:var(--accent);color:#fff;
  font-size:14.5px;font-weight:600;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-cta:hover{background:var(--ink);color:#fff}
.site-header.is-stuck .nav-cta:hover{background:var(--ink)}

.nav-toggle{
  width:42px;height:42px;border-radius:11px;border:1px solid rgba(245,244,241,.32);
  background:transparent;display:none;align-items:center;justify-content:center;
  justify-self:start;cursor:pointer;
}
.site-header.is-stuck .nav-toggle{border-color:var(--line)}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--hdr-fg);position:relative;border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--hdr-fg);border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.mobile-panel{background:var(--paper);border-bottom:1px solid var(--line)}
.mobile-panel .wrap{padding-top:10px;padding-bottom:20px}
.mobile-panel a{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;color:var(--t1);font-size:16px;font-weight:500;
  border-bottom:1px solid var(--line);
}
.mobile-panel a:last-child{border-bottom:0}
.mobile-panel a.active{color:var(--accent)}
.mobile-panel .m-cta{
  margin-top:16px;height:52px;justify-content:center;border-radius:var(--r-pill);
  background:var(--ink);color:#F5F4F1;font-weight:600;border-bottom:0;
}

@media (max-width:991.98px){
  .header-inner{grid-template-columns:44px 1fr 44px;height:66px}
  .brand{justify-self:center}
  .nav-toggle{display:flex}
  .nav-side{display:none}
}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  background:var(--ink);color:rgba(245,244,241,.76);
  padding:150px 0 0;
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.2;
}
.hero-grid{
  position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:linear-gradient(rgba(245,244,241,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(245,244,241,.055) 1px,transparent 1px);
  background-size:72px 72px;
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);
  gap:clamp(28px,4vw,60px);align-items:center;
  padding-bottom:clamp(36px,5vw,64px);
}
.hero h1{
  color:#F5F4F1;
  font-size:clamp(2.4rem,5.6vw,4rem);
  font-weight:800;line-height:1.08;letter-spacing:-.02em;
  margin-bottom:22px;
}
.hero h1 .ln{display:block;overflow:hidden;padding-bottom:2px}
.hero h1 .ln > span{display:block;transform:translateY(112%);animation:lineUp .95s var(--ease) forwards}
.hero h1 .ln:nth-child(1) > span{animation-delay:.05s}
.hero h1 .ln:nth-child(2) > span{animation-delay:.13s}
.hero h1 .ln:nth-child(3) > span{animation-delay:.21s}
@keyframes lineUp{to{transform:translateY(0)}}
.hero-sub{
  max-width:520px;font-size:17px;line-height:1.85;color:rgba(245,244,241,.7);
  opacity:0;animation:fadeUp .9s var(--ease) .34s forwards;
}
.hero-actions{
  display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;
  opacity:0;animation:fadeUp .9s var(--ease) .44s forwards;
}
@keyframes fadeUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
.hero-media{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid rgba(245,244,241,.14);
  background:var(--ink-2);
  opacity:0;animation:fadeUp 1s var(--ease) .3s forwards;
}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-media figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:16px 18px;font-size:13.5px;color:rgba(245,244,241,.82);
  background:linear-gradient(180deg,rgba(14,43,36,0),rgba(14,43,36,.86));
}

.hero-stats{position:relative;z-index:2;border-top:1px solid var(--line-2)}
.hero-stats ul{display:grid;grid-template-columns:repeat(4,1fr)}
.hero-stats li{padding:24px 20px;border-right:1px solid var(--line-2)}
.hero-stats li:first-child{padding-left:0}
.hero-stats li:last-child{border-right:0}
.hero-stats .num{
  font-size:26px;font-weight:800;color:#F5F4F1;letter-spacing:-.01em;
  display:flex;align-items:baseline;gap:4px;
}
.hero-stats .num em{font-style:normal;font-size:13px;font-weight:600;color:#F0A28C}
.hero-stats .lbl{font-size:12.5px;letter-spacing:.08em;color:rgba(245,244,241,.55);margin-top:2px}

@media (max-width:991.98px){
  .hero{padding-top:118px}
  .hero-inner{grid-template-columns:1fr;gap:34px}
  .hero h1{font-size:clamp(2.1rem,7vw,2.9rem)}
  .hero-media{order:2}
  .hero-media img{aspect-ratio:16/9}
  .hero-stats ul{grid-template-columns:repeat(2,1fr)}
  .hero-stats li{border-right:1px solid var(--line-2);padding:18px 14px}
  .hero-stats li:nth-child(2n){border-right:0}
  .hero-stats li:nth-child(n+3){border-top:1px solid var(--line-2)}
  .hero-stats li:first-child{padding-left:14px}
}

/* ============ 功能编号列表 ============ */
.feature-list{border-top:1px solid var(--line)}
.feature-row{
  display:grid;grid-template-columns:78px minmax(0,1fr) 220px 40px;
  align-items:center;gap:24px;
  padding:30px 22px;border-bottom:1px solid var(--line);
  transition:background .28s var(--ease),color .28s var(--ease);
}
.feature-row .fnum{
  font-size:1.5rem;font-weight:800;color:var(--accent);
  letter-spacing:.02em;line-height:1;
}
.feature-row h3{font-size:1.32rem;font-weight:600;margin-bottom:6px;transition:color .28s var(--ease)}
.feature-row p{font-size:15px;color:var(--t3);transition:color .28s var(--ease)}
.feature-row .fmeta{font-size:13.5px;color:var(--t3);text-align:right;transition:color .28s var(--ease)}
.feature-row .farw{
  font-size:20px;color:var(--ink);justify-self:end;
  transition:transform .28s var(--ease),color .28s var(--ease);
}
.feature-row:hover{background:var(--ink)}
.feature-row:hover h3,.feature-row:hover .farw{color:#F5F4F1}
.feature-row:hover p,.feature-row:hover .fmeta{color:rgba(245,244,241,.66)}
.feature-row:hover .farw{transform:translateX(6px)}
@media (max-width:991.98px){
  .feature-row{grid-template-columns:56px minmax(0,1fr) 30px;gap:16px;padding:24px 8px}
  .feature-row .fmeta{display:none}
}
@media (max-width:575.98px){
  .feature-row{grid-template-columns:44px minmax(0,1fr) 24px;gap:12px}
  .feature-row h3{font-size:1.15rem}
}

/* ============ 数据区 ============ */
.stat-band{background:var(--ink);color:rgba(245,244,241,.7)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat-cell{padding:8px 32px;border-right:1px solid var(--line-2)}
.stat-cell:first-child{padding-left:0}
.stat-cell:last-child{border-right:0;padding-right:0}
.stat-num{
  display:flex;align-items:baseline;gap:6px;
  font-size:clamp(2.5rem,5vw,4rem);font-weight:800;color:#F5F4F1;
  line-height:1.05;letter-spacing:-.02em;
}
.stat-num em{font-style:normal;font-size:15px;font-weight:600;color:#F0A28C;letter-spacing:.04em}
.stat-label{margin-top:10px;font-size:13px;letter-spacing:.08em;color:rgba(245,244,241,.55)}
@media (max-width:991.98px){
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:0}
  .stat-cell{padding:22px 18px;border-right:1px solid var(--line-2)}
  .stat-cell:nth-child(2n){border-right:0}
  .stat-cell:nth-child(n+3){border-top:1px solid var(--line-2)}
  .stat-cell:first-child{padding-left:18px}
}

/* ============ 场景拼贴 ============ */
.collage{display:grid;grid-template-columns:repeat(12,1fr);grid-auto-rows:minmax(0,auto);gap:24px}
.scene-card{
  position:relative;overflow:hidden;border-radius:var(--r-card);
  border:1px solid var(--line);background:var(--white);
  display:flex;flex-direction:column;
  transition:box-shadow .28s var(--ease),transform .28s var(--ease);
}
.scene-card:hover{box-shadow:var(--sh);transform:translateY(-3px)}
.scene-card .media{overflow:hidden;background:var(--mist)}
.scene-card .media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.scene-card:hover .media img{transform:scale(1.04)}
.scene-body{padding:22px 24px 26px}
.scene-body h3{font-size:1.2rem;font-weight:600;margin:12px 0 8px;transition:color .24s var(--ease)}
.scene-card:hover .scene-body h3{color:var(--accent)}
.scene-body p{font-size:15px;color:var(--t3)}
.scene--a{grid-column:span 7}
.scene--a .media img{aspect-ratio:16/9}
.scene--b{grid-column:span 5}
.scene--b .media img{aspect-ratio:4/3}
.scene--c{grid-column:span 5}
.scene--c .media img{aspect-ratio:4/3}
.scene--d{grid-column:span 7}
.scene--d .media img{aspect-ratio:16/9}
@media (max-width:991.98px){
  .scene--a,.scene--b,.scene--c,.scene--d{grid-column:span 12}
  .scene--a .media img,.scene--d .media img{aspect-ratio:16/9}
}

/* ============ 方案 zigzag ============ */
.zig{display:grid;grid-template-columns:repeat(2,1fr);gap:clamp(24px,4vw,64px);align-items:center}
.zig + .zig{margin-top:clamp(36px,5vw,72px)}
.zig-media{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:var(--mist)}
.zig-media img{width:100%;aspect-ratio:3/2;object-fit:cover}
.zig-text h3{font-size:clamp(1.35rem,2.2vw,1.75rem);font-weight:700;margin:16px 0 14px}
.zig-text > p{color:var(--t3);font-size:16px;margin-bottom:20px}
.zig-list li{
  position:relative;padding-left:22px;margin-bottom:12px;
  font-size:15.5px;color:var(--t2);
}
.zig-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;
  background:var(--accent);border-radius:2px;
}
.zig--rev .zig-media{order:2}
@media (max-width:767.98px){
  .zig{grid-template-columns:1fr;gap:24px}
  .zig--rev .zig-media{order:0}
}

/* ============ 资讯列表 ============ */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;background:var(--white);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:box-shadow .28s var(--ease),transform .28s var(--ease);
}
.news-card:hover{box-shadow:var(--sh);transform:translateY(-3px)}
.news-card--feature{grid-column:1 / -1;flex-direction:row}
.news-card--feature .news-media{flex:0 0 46%;overflow:hidden;background:var(--mist)}
.news-card--feature .news-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.news-card--feature:hover .news-media img{transform:scale(1.04)}
.news-card--feature .news-body{padding:28px 30px;display:flex;flex-direction:column;justify-content:center}
.news-item{
  display:flex;flex-direction:column;
  padding:22px 24px;background:var(--white);
  border:1px solid var(--line);border-radius:var(--r-card);
  transition:box-shadow .28s var(--ease),transform .28s var(--ease);
}
.news-item:hover{box-shadow:var(--sh);transform:translateY(-3px)}
.news-body h3{font-size:1.16rem;font-weight:600;margin:12px 0 10px}
.news-body h3 a{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-item:hover h3 a,.news-card:hover h3 a{color:var(--accent)}
.news-desc{
  color:var(--t3);font-size:15px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  margin-top:16px;font-size:13px;color:var(--t3);
}
.news-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--t3);opacity:.6}
.news-meta .spacer{margin-left:auto}
.news-head{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--t3)}

.empty-state{
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;border:1px dashed var(--line);border-radius:var(--r-card);
  background:var(--white);color:var(--t3);text-align:center;padding:32px;
}
.empty-ico{
  width:52px;height:52px;border-radius:16px;background:var(--mist);
  display:flex;align-items:center;justify-content:center;color:var(--ink);font-weight:800;font-size:20px;
}
@media (max-width:767.98px){
  .news-grid{grid-template-columns:1fr}
  .news-card--feature{flex-direction:column}
  .news-card--feature .news-media{flex:none}
  .news-card--feature .news-media img{aspect-ratio:16/9}
}
.news-foot{margin-top:36px;display:flex;justify-content:center}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:clamp(28px,4vw,64px)}
.faq-sticky{position:sticky;top:110px;align-self:start}
.faq-sticky h2{font-size:clamp(1.8rem,3.4vw,2.6rem)}
.faq-sticky p{margin-top:16px;color:var(--t3);font-size:16px}
.faq-list .accordion-item{background:transparent;border:0;border-top:1px solid var(--line)}
.faq-list .accordion-item:last-child{border-bottom:1px solid var(--line)}
.faq-list .accordion-header{margin:0}
.faq-list .accordion-button{
  background:transparent;border:0;box-shadow:none;
  padding:24px 52px 24px 0;font-size:1.06rem;font-weight:600;color:var(--t1);
  border-radius:0;display:flex;align-items:center;gap:14px;
}
.faq-list .accordion-button .qidx{
  font-size:13px;font-weight:700;color:var(--t3);letter-spacing:.06em;
  transition:color .2s var(--ease);flex:0 0 auto;
}
.faq-list .accordion-button:not(.collapsed){color:var(--t1)}
.faq-list .accordion-button:not(.collapsed) .qidx{color:var(--accent)}
.faq-list .accordion-button::after{
  content:"";background-image:none;width:11px;height:11px;
  border-right:2px solid var(--ink);border-bottom:2px solid var(--ink);
  transform:rotate(45deg);margin-left:auto;margin-right:14px;
  transition:transform .22s var(--ease);
}
.faq-list .accordion-button:not(.collapsed)::after{transform:rotate(-135deg)}
.faq-list .accordion-body{padding:0 52px 26px 0;color:var(--t3);font-size:15.5px}
@media (max-width:991.98px){
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .faq-sticky{position:static}
}

/* ============ 联系区 ============ */
.contact-layout{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:clamp(24px,3vw,40px)}
.form-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  padding:clamp(24px,3vw,40px);
}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field--full{grid-column:1 / -1}
.field label{font-size:14px;font-weight:600;color:var(--t1)}
.field .req{color:var(--accent)}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 15px;
  border:1px solid var(--line);border-radius:var(--r-input);
  background:var(--paper);color:var(--t1);font-size:15.5px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.field textarea{height:auto;min-height:126px;padding:12px 15px;line-height:1.8;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#A6ADA8}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;background:#fff;border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(232,85,47,.14);
}
.form-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-top:24px}
.form-note{font-size:13px;color:var(--t3)}
.info-card{
  background:var(--ink);color:rgba(245,244,241,.72);
  border-radius:var(--r-card);padding:clamp(24px,3vw,36px);
  display:flex;flex-direction:column;gap:22px;
}
.info-card h3{color:#F5F4F1;font-size:1.2rem}
.info-item{border-top:1px solid var(--line-2);padding-top:16px}
.info-item .k{font-size:12.5px;letter-spacing:.08em;color:#F0A28C;margin-bottom:6px}
.info-item .v{color:#F5F4F1;font-size:15.5px;word-break:break-all}
.info-card .note{font-size:13.5px;color:rgba(245,244,241,.55)}
@media (max-width:991.98px){
  .contact-layout{grid-template-columns:1fr}
}
@media (max-width:575.98px){
  .form-grid{grid-template-columns:1fr}
}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(245,244,241,.66);padding:clamp(48px,6vw,80px) 0 0}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:clamp(24px,3vw,48px);padding-bottom:48px;
}
.footer-grid h4{color:#F5F4F1;font-size:14px;font-weight:700;letter-spacing:.06em;margin-bottom:18px}
.footer-brand .brand{margin-bottom:18px;justify-self:start}
.footer-brand p{font-size:14.5px;line-height:1.85;max-width:300px}
.footer-links li{margin-bottom:11px}
.footer-links a{font-size:14.5px;color:rgba(245,244,241,.66)}
.footer-links a:hover{color:#F0A28C}
.footer-contact li{font-size:14.5px;margin-bottom:12px;line-height:1.7}
.footer-contact .k{display:block;font-size:12px;letter-spacing:.08em;color:#F0A28C;margin-bottom:3px}
.footer-bar{
  border-top:1px solid var(--line-2);
  padding:22px 0;display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(245,244,241,.6);
}
.footer-bar .legal{display:flex;gap:20px}
.footer-bar .legal a{color:rgba(245,244,241,.6)}
.footer-bar .legal a:hover{color:#F0A28C}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr}
}

/* ============ 入场动画 ============ */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .65s var(--ease),transform .65s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-delay:0ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
  .hero h1 .ln > span,.hero-sub,.hero-actions,.hero-media{transform:none;opacity:1;animation:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --ink:#0E2B24;
  --ink-2:#173B32;
  --accent:#E8552F;
  --paper:#F5F4F1;
  --mist:#C9D8CE;
  --white:#FFFFFF;
  --t1:#14171A;
  --t2:#3A403C;
  --t3:#7A827C;
  --line:rgba(14,43,36,.12);
  --line-strong:rgba(14,43,36,.22);
  --line-dark:rgba(255,255,255,.14);
  --dark-t1:#F5F4F1;
  --dark-t2:rgba(245,244,241,.66);
  --r-card:12px;
  --r-input:9px;
  --pill:999px;
  --sh-hover:0 8px 28px rgba(14,43,36,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --gap:24px;
  --bs-primary:#0E2B24;
  --bs-body-bg:#F5F4F1;
  --bs-body-color:#3A403C;
  --bs-border-color:rgba(14,43,36,.12);
  --bs-link-color:#0E2B24;
  --bs-link-hover-color:#E8552F;
  --bs-border-radius:12px;
  --bs-font-sans-serif:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--t2);
  font-family:var(--bs-font-sans-serif);
  font-size:17px;
  line-height:1.9;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink);text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease)}
a:hover{color:var(--accent)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:700;line-height:1.25;letter-spacing:-.01em}
h1{font-weight:800;line-height:1.1;letter-spacing:-.02em}
p{margin:0 0 1.1em}
ul{margin:0;padding:0;list-style:none}
.wrap{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1400px){.wrap{max-width:1320px}}
@media (max-width:575px){.wrap{padding:0 18px}}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(245,244,241,0);
  border-bottom:1px solid transparent;
  transition:background-color .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-stuck{
  background:var(--paper);
  border-bottom:1px solid var(--line);
  box-shadow:0 2px 14px rgba(14,43,36,.05);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  min-height:76px;
  transition:min-height .3s var(--ease);
}
.site-header.is-stuck .nav-wrap{min-height:64px}
.nav-side{display:none;align-items:center;gap:26px;flex:1 1 0}
.nav-side--left{justify-content:flex-start}
.nav-side--right{justify-content:flex-end}
.nav-link-item{
  position:relative;
  font-size:15.5px;
  color:var(--t2);
  padding:6px 0;
  white-space:nowrap;
}
.nav-link-item::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s var(--ease);
}
.nav-link-item:hover{color:var(--ink)}
.nav-link-item:hover::after,
.nav-link-item.active::after{transform:scaleX(1)}
.nav-link-item.active{color:var(--ink);font-weight:600}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.brand-mark{
  width:38px;height:38px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--ink);
  border-radius:11px;
  flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-line1{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:.04em}
.brand-line2{font-size:11px;color:var(--t3);letter-spacing:.16em;text-transform:lowercase}
.btn-accent{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--ink);
  color:var(--dark-t1);
  border:1px solid var(--ink);
  border-radius:var(--pill);
  padding:9px 20px;
  font-size:14.5px;
  font-weight:600;
  white-space:nowrap;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-accent:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.btn-accent .arw{transition:transform .2s var(--ease)}
.btn-accent:hover .arw{transform:translateX(6px)}
.nav-toggler{
  display:inline-flex;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:44px;height:40px;
  padding:0 10px;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:11px;
  cursor:pointer;
}
.nav-toggler span{display:block;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s var(--ease),opacity .25s var(--ease)}
.nav-toggler[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggler[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggler[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-drawer{
  display:none;
  background:var(--paper);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:10px 0 18px;
}
.mobile-drawer.open{display:block}
.mobile-drawer a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:56px;
  padding:0 24px;
  font-size:16px;
  color:var(--t1);
  border-bottom:1px solid var(--line);
}
.mobile-drawer a:last-child{border-bottom:0}
.mobile-drawer a.active{color:var(--accent);font-weight:600}
@media (min-width:992px){
  .nav-side{display:flex}
  .nav-toggler{display:none}
  .mobile-drawer{display:none !important}
}

/* ---------- breadcrumb + hero ---------- */
.article-hero{
  position:relative;
  background-image:linear-gradient(180deg,rgba(14,43,36,.94),rgba(14,43,36,.86)),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  color:var(--dark-t1);
  padding:54px 0 clamp(48px,7vw,88px);
}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--dark-t2);
  margin-bottom:26px;
}
.crumb a{color:var(--dark-t2)}
.crumb a:hover{color:#fff}
.crumb .sep{opacity:.55}
.crumb .current{color:rgba(245,244,241,.86)}
.hero-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:.08em;
  color:var(--dark-t2);
  border:1px solid var(--line-dark);
  border-radius:var(--pill);
  padding:5px 14px;
  margin-bottom:20px;
}
.hero-kicker i{width:7px;height:7px;border-radius:50%;background:var(--accent);display:inline-block}
.article-hero h1{
  color:var(--dark-t1);
  font-size:clamp(1.9rem,4vw,2.9rem);
  max-width:920px;
  margin-bottom:22px;
}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  font-size:13.5px;
  color:var(--dark-t2);
}
.meta-row .bar{width:1px;height:14px;background:var(--line-dark);display:inline-block}
.meta-row .chip{
  border-radius:var(--pill);
  background:rgba(245,244,241,.12);
  border:1px solid var(--line-dark);
  color:var(--dark-t1);
  padding:3px 12px;
  font-size:12.5px;
}

/* ---------- layout ---------- */
.article-section{padding:clamp(48px,7vw,96px) 0}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:44px;
}
@media (min-width:992px){
  .article-layout{grid-template-columns:minmax(0,1fr) 260px;gap:52px;align-items:start}
}
.article-panel{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:clamp(22px,3.4vw,48px);
}
.article-body{
  max-width:780px;
  font-size:17px;
  line-height:1.9;
  color:var(--t2);
}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;
  font-size:clamp(1.35rem,2.3vw,1.72rem);
  font-weight:700;
  color:var(--t1);
  margin:2em 0 .9em;
  padding-left:16px;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:.22em;
  width:3px;height:1.1em;
  background:var(--accent);
  border-radius:2px;
}
.article-body h3{
  font-size:1.2rem;
  font-weight:600;
  color:var(--t1);
  margin:1.6em 0 .7em;
}
.article-body ul,
.article-body ol{margin:0 0 1.3em;padding-left:1.2em}
.article-body ul{list-style:none;padding-left:0}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:.55em}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:8px;height:8px;
  border-radius:2px;
  background:var(--accent);
}
.article-body ol{counter-reset:li;list-style:none;padding-left:0}
.article-body ol li{position:relative;padding-left:30px;margin-bottom:.55em;counter-increment:li}
.article-body ol li::before{
  content:counter(li,decimal-leading-zero);
  position:absolute;left:0;top:0;
  color:var(--accent);
  font-size:14px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
}
.article-body blockquote{
  margin:1.6em 0;
  padding:16px 20px;
  background:#EDF2EE;
  border-left:3px solid var(--ink);
  border-radius:0 var(--r-card) var(--r-card) 0;
  color:var(--t1);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  border-radius:var(--r-card);
  margin:1.4em auto;
  background:var(--mist);
}
.article-body figure{margin:1.6em 0}
.article-body figcaption{
  text-align:center;
  font-size:13px;
  color:var(--t3);
  margin-top:10px;
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:1.6em 0;
  font-size:15.5px;
}
.article-body th,.article-body td{
  padding:12px 14px;
  border:0;
  border-bottom:1px solid var(--line);
  text-align:left;
}
.article-body th{color:var(--t1);font-weight:600;background:#EFF3F0}
.article-body a{
  color:var(--ink);
  font-weight:600;
  text-decoration:underline;
  text-decoration-color:var(--accent);
  text-decoration-thickness:2px;
  text-underline-offset:4px;
}
.article-body a:hover{color:var(--accent)}
.article-body strong{color:var(--t1)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}

/* ---------- empty state ---------- */
.empty-state{
  min-height:220px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
  text-align:center;
  color:var(--t3);
}
.empty-state .glyph{
  width:56px;height:56px;
  border-radius:16px;
  background:var(--mist);
  display:flex;align-items:center;justify-content:center;
  color:var(--ink);
  font-size:22px;
  font-weight:700;
}
.empty-state p{margin:0;font-size:16px;color:var(--t2)}

/* ---------- buttons ---------- */
.btn-solid,.btn-ghost,.btn-soft{
  display:inline-flex;
  align-items:center;
  gap:8px;
  border-radius:var(--pill);
  padding:12px 24px;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-solid{background:var(--ink);border:1px solid var(--ink);color:var(--dark-t1)}
.btn-solid:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.btn-ghost{background:transparent;border:1px solid var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--dark-t1)}
.btn-soft{background:var(--mist);border:1px solid transparent;color:var(--ink)}
.btn-soft:hover{background:var(--ink);color:var(--dark-t1)}
.btn-solid .arw,.btn-ghost .arw,.btn-soft .arw{transition:transform .2s var(--ease)}
.btn-solid:hover .arw,.btn-ghost:hover .arw,.btn-soft:hover .arw{transform:translateX(6px)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
}

/* ---------- tag row ---------- */
.tag-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-top:38px;
  padding-top:26px;
  border-top:1px solid var(--line);
}
.tag-row .label{font-size:13px;color:var(--t3);letter-spacing:.06em;margin-right:4px}
.tag-pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:#EDF2EE;
  color:var(--ink);
  border-radius:var(--pill);
  padding:6px 15px;
  font-size:13px;
  border:1px solid transparent;
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.tag-pill::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--accent);display:inline-block}
.tag-pill:hover{background:var(--ink);color:var(--dark-t1)}

/* ---------- sidebar ---------- */
.article-side{display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px;
  transition:box-shadow .25s var(--ease),transform .25s var(--ease);
}
.side-card:hover{box-shadow:var(--sh-hover);transform:translateY(-2px)}
.side-card h3{
  font-size:15px;
  font-weight:700;
  color:var(--t1);
  margin-bottom:14px;
  padding-bottom:12px;
  border-bottom:1px solid var(--line);
}
.side-links li{margin-bottom:2px}
.side-links a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:10px 0;
  font-size:14.5px;
  color:var(--t2);
  border-bottom:1px dashed var(--line);
}
.side-links li:last-child a{border-bottom:0}
.side-links a:hover{color:var(--accent)}
.side-links a .arw{transition:transform .2s var(--ease);color:var(--t3)}
.side-links a:hover .arw{transform:translateX(4px);color:var(--accent)}
.side-card.dark{
  background:var(--ink);
  border-color:var(--ink);
  color:var(--dark-t1);
}
.side-card.dark h3{color:var(--dark-t1);border-bottom-color:var(--line-dark)}
.side-card.dark p{color:var(--dark-t2);font-size:14.5px;margin-bottom:16px}
.side-card.dark .btn-solid{background:var(--accent);border-color:var(--accent);color:#fff}
.side-card.dark .btn-solid:hover{background:#fff;border-color:#fff;color:var(--ink)}
@media (min-width:992px){
  .article-side .side-card:first-child{position:sticky;top:96px}
}

/* ---------- related ---------- */
.section-head{margin-bottom:36px;max-width:760px}
.section-head .eyebrow{
  display:inline-block;
  font-size:13px;
  letter-spacing:.1em;
  color:var(--accent);
  margin-bottom:12px;
  font-weight:600;
}
.section-head h2{font-size:clamp(1.5rem,2.8vw,2.1rem);margin-bottom:12px}
.section-head p{color:var(--t3);font-size:15.5px;margin:0}
.rel-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:var(--gap);
}
@media (min-width:576px){.rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:992px){.rel-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.rel-card{
  display:block;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:box-shadow .25s var(--ease),transform .25s var(--ease);
}
.rel-card:hover{box-shadow:var(--sh-hover);transform:translateY(-3px)}
.rel-thumb{
  position:relative;
  aspect-ratio:3/2;
  background:var(--mist);
  overflow:hidden;
}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.rel-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-body{padding:20px}
.rel-body .k{font-size:12.5px;color:var(--t3);letter-spacing:.06em}
.rel-body h3{
  font-size:16.5px;
  margin:8px 0 8px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  transition:color .2s var(--ease);
}
.rel-card:hover .rel-body h3{color:var(--accent)}
.rel-body p{
  font-size:14px;
  color:var(--t3);
  margin:0;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rel-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-top:14px;
  font-size:13px;
  color:var(--t3);
}
.rel-foot .arw{transition:transform .2s var(--ease);color:var(--ink)}
.rel-card:hover .rel-foot .arw{transform:translateX(6px);color:var(--accent)}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--ink);
  color:var(--dark-t1);
  padding:clamp(48px,7vw,88px) 0;
}
.cta-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
  align-items:center;
}
@media (min-width:992px){.cta-grid{grid-template-columns:1.35fr .65fr;gap:56px}}
.cta-band h2{color:var(--dark-t1);font-size:clamp(1.6rem,3vw,2.2rem);margin-bottom:14px}
.cta-band p{color:var(--dark-t2);font-size:16px;margin:0;max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-band .btn-solid{background:var(--accent);border-color:var(--accent);color:#fff}
.cta-band .btn-solid:hover{background:#fff;border-color:#fff;color:var(--ink)}
.cta-band .btn-ghost{border-color:var(--line-dark);color:var(--dark-t1)}
.cta-band .btn-ghost:hover{background:var(--dark-t1);border-color:var(--dark-t1);color:var(--ink)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink);
  color:var(--dark-t1);
  padding:clamp(48px,7vw,80px) 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:36px;
  padding-bottom:44px;
}
@media (min-width:576px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:992px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:44px}}
.footer-brand .brand{margin-bottom:18px}
.footer-brand .brand-mark{background:transparent;border:1px solid var(--line-dark)}
.footer-brand .brand-line1{color:var(--dark-t1)}
.footer-brand .brand-line2{color:var(--dark-t2)}
.footer-brand p{color:var(--dark-t2);font-size:14.5px;margin:0;max-width:340px}
.site-footer h4{
  color:var(--dark-t1);
  font-size:14px;
  letter-spacing:.08em;
  margin-bottom:18px;
  font-weight:600;
}
.footer-links li{margin-bottom:12px}
.footer-links a{color:var(--dark-t2);font-size:14.5px}
.footer-links a:hover{color:var(--accent)}
.footer-contact li{
  color:var(--dark-t2);
  font-size:14.5px;
  margin-bottom:12px;
  display:flex;
  gap:10px;
}
.footer-contact .k{color:rgba(245,244,241,.5);flex:0 0 62px}
.footer-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:20px 0 26px;
  border-top:1px solid var(--line-dark);
  font-size:13px;
  color:rgba(245,244,241,.6);
}
.footer-bar .legal a{color:rgba(245,244,241,.6);margin-left:18px}
.footer-bar .legal a:hover{color:var(--accent)}

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

/* roulang page: category1 */
:root{
  --ink:#0E2B24;
  --accent:#E8552F;
  --paper:#F5F4F1;
  --mist:#C9D8CE;
  --white:#FFFFFF;
  --t1:#14171A;
  --t2:#3A403C;
  --t3:#7A827C;
  --line:rgba(14,43,36,.12);
  --line-dark:rgba(255,255,255,.14);
  --radius:12px;
  --radius-sm:9px;
  --pill:999px;
  --shadow-hover:0 8px 28px rgba(14,43,36,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --bs-body-bg:var(--paper);
  --bs-body-color:var(--t2);
  --bs-primary:var(--ink);
  --bs-border-color:var(--line);
  --bs-border-radius:var(--radius);
  --bs-link-color:var(--ink);
  --bs-link-hover-color:var(--accent);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--t2);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--ink);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--accent)}
button,input,select,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;color:var(--t1);line-height:1.25}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1400px){.wrap{max-width:1320px}}
@media (max-width:575.98px){.wrap{padding:0 18px}}
section{position:relative}
.sec{padding:clamp(64px,9vw,128px) 0}
.sec--tight{padding:clamp(48px,6vw,88px) 0}
.sec-head{max-width:760px;margin-bottom:clamp(32px,4vw,56px)}
.sec-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--accent);
  font-weight:600;margin-bottom:14px;text-transform:uppercase;
  font-variant-numeric:tabular-nums;
}
.sec-kicker::before{content:"";width:22px;height:2px;background:var(--accent);display:block}
.sec-head h2{font-size:clamp(1.8rem,3.4vw,2.8rem);font-weight:700;letter-spacing:-.01em}
.sec-head p{margin-top:16px;color:var(--t2);font-size:17px}
.serif{font-family:"Noto Serif SC",Georgia,serif}
.num{font-variant-numeric:tabular-nums;font-family:Inter,"DIN Alternate",system-ui,sans-serif}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1040;
  background:transparent;border-bottom:1px solid transparent;
  transition:background .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled{background:rgba(245,244,241,.96);border-bottom-color:var(--line);backdrop-filter:blur(10px)}
.header-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:16px;height:76px;transition:height .3s var(--ease)}
.site-header.is-scrolled .header-inner{height:64px}
.nav-side{display:flex;align-items:center;gap:6px;flex:1 1 0;min-width:0}
.nav-side--right{justify-content:flex-end}
.nav-link-item{
  position:relative;padding:8px 12px;font-size:15px;color:var(--t2);font-weight:500;
  border-radius:var(--pill);white-space:nowrap;transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link-item::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left center;transition:transform .24s var(--ease);
}
.nav-link-item:hover{color:var(--ink);background:rgba(201,216,206,.35)}
.nav-link-item:hover::after{transform:scaleX(1)}
.nav-link-item.active{color:var(--ink);font-weight:700}
.nav-link-item.active::after{transform:scaleX(1)}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:11px;background:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-line1{font-size:16px;font-weight:800;color:var(--t1);letter-spacing:.02em}
.brand-line2{font-size:11px;color:var(--t3);letter-spacing:.14em;text-transform:lowercase}
.nav-cta{
  display:inline-flex;align-items:center;gap:6px;margin-left:10px;
  height:40px;padding:0 20px;border-radius:var(--pill);
  background:var(--ink);color:#fff;font-size:14px;font-weight:600;
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.nav-cta:hover{background:var(--accent);color:#fff;transform:translateY(-1px)}
.nav-cta svg{transition:transform .2s var(--ease)}
.nav-cta:hover svg{transform:translateX(3px)}
.nav-toggle{
  display:none;align-items:center;gap:8px;height:40px;padding:0 16px;
  border:1px solid var(--line);border-radius:var(--pill);background:rgba(255,255,255,.7);
  color:var(--ink);font-size:14px;font-weight:600;cursor:pointer;margin-left:auto;
}
.nav-toggle:hover{border-color:var(--ink)}
.mobile-nav{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.mobile-nav ul{padding:8px 0}
.mobile-nav a{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;padding:0 24px;color:var(--t1);font-size:16px;font-weight:500;
  border-bottom:1px solid var(--line);
}
.mobile-nav li:last-child a{border-bottom:0}
.mobile-nav a.active{color:var(--accent);font-weight:700}
@media (max-width:991.98px){
  .nav-side{display:none}
  .brand{position:absolute;left:50%;transform:translateX(-50%)}
  .nav-toggle{display:inline-flex}
}

/* ---------- hero ---------- */
.hero{
  padding:118px 0 clamp(32px,5vw,56px);
  min-height:46vh;display:flex;align-items:center;
  background:linear-gradient(180deg,#EFEFE9 0%,var(--paper) 100%);
  border-bottom:1px solid var(--line);
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(24px,4vw,56px);align-items:center;width:100%}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--t3);margin-bottom:20px}
.crumb a{color:var(--t3)}
.crumb a:hover{color:var(--accent)}
.crumb span.sep{color:var(--mist)}
.hero h1{
  font-size:clamp(2.1rem,4.4vw,3.4rem);font-weight:800;line-height:1.12;letter-spacing:-.02em;
  animation:lineUp .7s var(--ease) both;
}
.hero .lede{margin-top:20px;font-size:18px;color:var(--t2);max-width:520px;animation:lineUp .7s .12s var(--ease) both}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;animation:lineUp .7s .2s var(--ease) both}
.hero-figure{
  position:relative;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);background:var(--mist);aspect-ratio:16/10;
}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-note{
  position:absolute;left:16px;bottom:16px;right:16px;
  background:rgba(14,43,36,.86);color:var(--paper);border-radius:10px;
  padding:12px 16px;font-size:13px;line-height:1.6;backdrop-filter:blur(4px);
}
@keyframes lineUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:none}}

/* ---------- buttons ---------- */
.btn-ink,.btn-line{
  display:inline-flex;align-items:center;gap:8px;height:50px;padding:0 26px;
  border-radius:var(--pill);font-size:15px;font-weight:600;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn-ink{background:var(--ink);color:#fff;border:1px solid var(--ink)}
.btn-ink:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.btn-ink svg,.btn-line svg{transition:transform .2s var(--ease)}
.btn-ink:hover svg,.btn-line:hover svg{transform:translateX(6px)}
.btn-line{background:transparent;color:var(--ink);border:1px solid rgba(14,43,36,.35)}
.btn-line:hover{border-color:var(--ink);background:var(--ink);color:#fff}

/* ---------- split block ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,72px);align-items:center}
.split figure{margin:0;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:var(--mist);aspect-ratio:3/2}
.split figure img{width:100%;height:100%;object-fit:cover}
.lead-para{font-size:17.5px;color:var(--t2)}
.lead-para + .lead-para{margin-top:16px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag{
  display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 14px;
  border-radius:var(--pill);background:rgba(201,216,206,.5);color:var(--ink);
  font-size:13px;font-weight:500;
}
.tag::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--accent)}
.mini-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:32px;border-top:1px solid var(--line);padding-top:24px}
.mini-stats b{display:block;font-size:26px;color:var(--ink);font-weight:800}
.mini-stats span{font-size:13px;color:var(--t3);letter-spacing:.04em}

/* ---------- timeline ---------- */
.tl-wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.35fr);gap:clamp(28px,5vw,72px);align-items:start}
.tl-side{position:sticky;top:112px}
@media (max-width:991.98px){.tl-side{position:static}}
.timeline{position:relative;padding-left:36px}
.timeline::before{content:"";position:absolute;left:10px;top:8px;bottom:8px;width:1px;background:var(--line)}
.tl-item{position:relative;padding-bottom:clamp(28px,3.4vw,44px)}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-31px;top:8px;width:12px;height:12px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 0 4px rgba(232,85,47,.14);
}
.tl-phase{font-size:13px;letter-spacing:.08em;color:var(--t3);font-weight:600;font-variant-numeric:tabular-nums}
.tl-item h3{font-size:1.25rem;font-weight:600;margin:6px 0 8px}
.tl-item p{color:var(--t2);font-size:16px}
.tl-item .tl-extra{margin-top:12px;display:flex;flex-wrap:wrap;gap:10px}

/* ---------- stat band ---------- */
.band{background:var(--ink);color:var(--paper)}
.band .sec{padding:clamp(56px,7vw,96px) 0}
.band-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.band-cell{padding:0 clamp(16px,2.6vw,32px);border-left:1px solid var(--line-dark)}
.band-cell:first-child{border-left:0;padding-left:0}
.band-cell b{display:block;font-size:clamp(2.4rem,4.6vw,3.6rem);font-weight:800;color:var(--paper);line-height:1.05;letter-spacing:-.02em}
.band-cell span{display:block;margin-top:10px;font-size:13px;letter-spacing:.08em;color:rgba(245,244,241,.66)}
.band-cell p{margin-top:12px;font-size:15px;color:rgba(245,244,241,.72);line-height:1.75}
@media (max-width:767.98px){
  .band-grid{grid-template-columns:repeat(2,1fr);gap:32px 20px}
  .band-cell{border-left:0;padding:0}
  .band-cell:nth-child(odd){border-right:1px solid var(--line-dark);padding-right:16px}
}

/* ---------- capability list ---------- */
.cap-list{border-top:1px solid var(--line)}
.cap-item{
  display:grid;grid-template-columns:72px minmax(0,1fr) 32px;gap:18px;align-items:center;
  padding:clamp(20px,2.6vw,30px) clamp(12px,1.6vw,22px);
  border-bottom:1px solid var(--line);cursor:pointer;
  transition:background .24s var(--ease),color .24s var(--ease),padding-left .24s var(--ease);
}
.cap-item h3{font-size:1.3rem;font-weight:600;transition:color .24s var(--ease)}
.cap-item p{margin-top:6px;font-size:15.5px;color:var(--t2);transition:color .24s var(--ease)}
.cap-no{font-size:1.5rem;font-weight:800;color:var(--accent);letter-spacing:-.02em}
.cap-arrow{color:var(--t3);font-size:20px;transition:transform .24s var(--ease),color .24s var(--ease)}
.cap-item:hover{background:var(--ink);padding-left:clamp(20px,2.6vw,34px)}
.cap-item:hover h3,.cap-item:hover p{color:var(--paper)}
.cap-item:hover .cap-arrow{color:var(--accent);transform:translateX(6px)}

/* ---------- scene ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(24px,3.4vw,44px)}
.scene-col{border:1px solid var(--line);border-radius:var(--radius);background:var(--white);padding:clamp(24px,3vw,36px)}
.scene-col h3{font-size:1.35rem;font-weight:600;margin-bottom:18px}
.scene-col ul li{display:grid;grid-template-columns:10px minmax(0,1fr);gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);font-size:16px}
.scene-col ul li:last-child{border-bottom:0;padding-bottom:0}
.scene-col ul li::before{content:"";width:8px;height:8px;background:var(--accent);border-radius:2px;margin-top:11px}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.6fr);gap:clamp(28px,5vw,72px);align-items:start}
.faq-side{position:sticky;top:112px}
@media (max-width:991.98px){.faq-side{position:static}}
.acc{border-top:1px solid var(--line)}
.acc-item{border-bottom:1px solid var(--line)}
.acc-btn{
  width:100%;display:flex;align-items:center;gap:16px;background:none;border:0;
  padding:22px 4px;text-align:left;cursor:pointer;color:var(--t1);
}
.acc-idx{font-size:14px;font-weight:700;color:var(--t3);font-variant-numeric:tabular-nums;flex:0 0 auto;transition:color .2s var(--ease)}
.acc-q{flex:1;font-size:17px;font-weight:600;color:var(--t1)}
.acc-arrow{flex:0 0 auto;color:var(--t3);transition:transform .2s var(--ease)}
.acc-btn[aria-expanded="true"] .acc-idx{color:var(--accent)}
.acc-btn[aria-expanded="true"] .acc-arrow{transform:rotate(180deg);color:var(--accent)}
.acc-body{padding:0 4px 24px 34px;color:var(--t2);font-size:16px}
.acc-body p + p{margin-top:12px}

/* ---------- cta ---------- */
.cta-band{background:var(--ink);color:var(--paper);border-radius:0}
.cta-inner{display:grid;grid-template-columns:1.2fr .8fr;gap:clamp(28px,4vw,64px);align-items:center}
.cta-inner h2{color:var(--paper);font-size:clamp(1.7rem,3vw,2.4rem);font-weight:700}
.cta-inner p{margin-top:16px;color:rgba(245,244,241,.72);font-size:16.5px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
.btn-paper{background:var(--paper);color:var(--ink);border:1px solid var(--paper)}
.btn-paper:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.btn-ghost{background:transparent;color:var(--paper);border:1px solid rgba(245,244,241,.4)}
.btn-ghost:hover{background:var(--paper);color:var(--ink);border-color:var(--paper)}

/* ---------- related ---------- */
.rel-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;border-top:1px solid var(--line);padding-top:28px}
.rel-link{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:18px 20px;border:1px solid var(--line);border-radius:var(--radius);background:var(--white);
  font-size:16px;font-weight:600;color:var(--t1);transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.rel-link span{color:var(--t3);transition:transform .2s var(--ease),color .2s var(--ease)}
.rel-link:hover{border-color:var(--ink);box-shadow:var(--shadow-hover);transform:translateY(-2px);color:var(--ink)}
.rel-link:hover span{transform:translateX(6px);color:var(--accent)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:var(--paper);padding:clamp(56px,7vw,96px) 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:clamp(24px,3vw,48px)}
.site-footer h4{color:var(--paper);font-size:15px;font-weight:700;margin-bottom:18px;letter-spacing:.02em}
.footer-brand .brand{margin-bottom:18px}
.footer-brand .brand-line1{color:var(--paper)}
.footer-brand .brand-line2{color:rgba(245,244,241,.6)}
.footer-brand p{color:rgba(245,244,241,.66);font-size:15px;line-height:1.85;max-width:340px}
.footer-links li{margin-bottom:12px}
.footer-links a{color:rgba(245,244,241,.78);font-size:15px}
.footer-links a:hover{color:var(--accent)}
.footer-contact li{color:rgba(245,244,241,.78);font-size:15px;margin-bottom:12px;line-height:1.7}
.footer-contact .k{display:inline-block;min-width:66px;color:rgba(245,244,241,.5);margin-right:8px}
.footer-bar{
  margin-top:clamp(40px,5vw,64px);border-top:1px solid var(--line-dark);
  padding:22px 0 28px;display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(245,244,241,.6);
}
.footer-bar .legal a{color:rgba(245,244,241,.6);margin-left:18px}
.footer-bar .legal a:hover{color:var(--accent)}

/* ---------- responsive ---------- */
@media (max-width:991.98px){
  .hero{padding-top:106px}
  .hero-grid{grid-template-columns:1fr}
  .hero-figure{order:-1;aspect-ratio:16/9}
  .split{grid-template-columns:1fr}
  .tl-wrap{grid-template-columns:1fr}
  .faq-grid{grid-template-columns:1fr}
  .cta-inner{grid-template-columns:1fr}
  .cta-actions{justify-content:flex-start}
  .rel-links{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767.98px){
  body{font-size:16px}
  .scene-grid{grid-template-columns:1fr}
  .mini-stats{grid-template-columns:1fr 1fr;gap:20px}
  .cap-item{grid-template-columns:52px minmax(0,1fr) 24px;gap:12px}
  .cap-item h3{font-size:1.1rem}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width:575.98px){
  .hero h1{font-size:34px}
  .btn-ink,.btn-line{height:46px;padding:0 20px;font-size:14px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn-ink,.hero-actions .btn-line{justify-content:center}
  .mini-stats{grid-template-columns:1fr}
  .acc-body{padding-left:4px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .reveal{opacity:1 !important;transform:none !important}
  .hero h1,.hero .lede,.hero-actions{animation:none !important}
}

/* roulang page: category2 */
:root{
  --ink:#0E2B24;
  --ink-deep:#0A211B;
  --accent:#E8552F;
  --accent-soft:rgba(232,85,47,.12);
  --paper:#F5F4F1;
  --mist:#C9D8CE;
  --mist-soft:#E6EDE8;
  --white:#FFFFFF;
  --t1:#14171A;
  --t2:#3A403C;
  --t3:#7A827C;
  --line:rgba(14,43,36,.12);
  --line-strong:rgba(14,43,36,.22);
  --line-dark:rgba(255,255,255,.14);
  --r-card:12px;
  --r-input:9px;
  --r-pill:999px;
  --shadow-hover:0 8px 28px rgba(14,43,36,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --wrap:1200px;
  --header-h:76px;
  --bs-primary:#0E2B24;
  --bs-body-bg:#F5F4F1;
  --bs-body-color:#3A403C;
  --bs-border-color:rgba(14,43,36,.12);
  --bs-border-radius:12px;
  --bs-link-color:#0E2B24;
  --bs-link-hover-color:#E8552F;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--t2);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:700;line-height:1.24}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--accent)}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:#F5F4F1;padding:10px 18px;border-radius:0 0 9px 0;z-index:2000}
.skip-link:focus{left:0}

/* ---------- 布局容器 ---------- */
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
@media (min-width:1400px){.wrap{max-width:1320px}}
@media (max-width:575.98px){.wrap{padding:0 18px}}
.sec{padding:clamp(64px,9vw,128px) 0}
.sec-tight{padding:clamp(48px,6vw,88px) 0}
.sec-head{max-width:760px;margin-bottom:32px}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--accent);margin-bottom:14px;font-variant-numeric:tabular-nums;
}
.sec-title{font-size:clamp(1.8rem,3.4vw,2.8rem);line-height:1.2;font-weight:700}
.sec-desc{margin-top:14px;color:var(--t2);font-size:16.5px;max-width:660px}
.sec-head--center .sec-desc{margin-left:auto;margin-right:auto}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  border-radius:var(--r-pill);padding:13px 26px;font-size:15px;font-weight:600;
  border:1px solid transparent;line-height:1.2;cursor:pointer;
  transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn .arw{transition:transform .22s var(--ease)}
.btn:hover .arw{transform:translateX(6px)}
.btn-solid{background:var(--ink);color:#F5F4F1}
.btn-solid:hover{background:var(--accent);color:#fff}
.btn-ghost{border-color:rgba(245,244,241,.42);color:#F5F4F1;background:transparent}
.btn-ghost:hover{background:#F5F4F1;color:var(--ink);border-color:#F5F4F1}
.btn-outline{border-color:var(--line-strong);color:var(--ink);background:transparent}
.btn-outline:hover{background:var(--ink);color:#F5F4F1;border-color:var(--ink)}
.btn-ink-on-light{background:#F5F4F1;color:var(--ink)}
.btn-ink-on-light:hover{background:var(--accent);color:#fff}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--accent);padding-bottom:2px;
}
.text-link:hover{color:var(--accent)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  background:transparent;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{background:var(--paper);border-bottom-color:var(--line);box-shadow:0 2px 18px rgba(14,43,36,.05)}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  height:var(--header-h);gap:18px;transition:height .3s var(--ease);
}
.site-header.is-scrolled .header-inner{height:64px}
.nav-side{display:flex;align-items:center;gap:28px}
.nav-side--left{justify-self:start}
.nav-side--right{justify-self:end}
.nav-link-item{
  position:relative;font-size:15px;font-weight:600;color:var(--t1);
  padding:6px 2px;white-space:nowrap;letter-spacing:.01em;
}
.nav-link-item::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.nav-link-item:hover::after,.nav-link-item.active::after{transform:scaleX(1)}
.nav-link-item.active{color:var(--ink)}
.nav-cta{
  margin-left:8px;padding:10px 20px;font-size:14.5px;border-radius:var(--r-pill);
  background:var(--ink);color:#F5F4F1;font-weight:600;
  transition:background-color .22s var(--ease),color .22s var(--ease);
}
.nav-cta:hover{background:var(--accent);color:#fff}
.brand{display:flex;align-items:center;gap:10px;justify-self:center}
.brand-mark{
  width:40px;height:40px;border-radius:11px;background:var(--ink);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.12}
.brand-line1{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:.02em}
.brand-line2{font-size:11.5px;font-weight:600;color:var(--t3);letter-spacing:.14em}
.site-header:not(.is-scrolled) .nav-link-item,
.site-header:not(.is-scrolled) .brand-line1{color:#F5F4F1}
.site-header:not(.is-scrolled) .brand-line2{color:rgba(245,244,241,.66)}
.site-header:not(.is-scrolled) .brand-mark{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22)}
.site-header:not(.is-scrolled) .nav-cta{background:#F5F4F1;color:var(--ink)}
.site-header:not(.is-scrolled) .nav-cta:hover{background:var(--accent);color:#fff}
.site-header:not(.is-scrolled) .nav-toggle span{background:#F5F4F1}
.nav-toggle{
  display:none;order:-1;justify-self:start;width:44px;height:44px;border:1px solid var(--line);
  border-radius:11px;background:transparent;align-items:center;justify-content:center;flex-direction:column;gap:5px;
  transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:background-color .2s var(--ease)}
.site-header:not(.is-scrolled) .nav-toggle{border-color:rgba(255,255,255,.28)}
.mobile-nav{background:var(--paper);border-top:1px solid var(--line)}
.mobile-nav-inner{padding-top:10px;padding-bottom:20px;display:flex;flex-direction:column}
.mobile-nav .m-link{
  height:56px;display:flex;align-items:center;font-size:16px;font-weight:600;color:var(--t1);
  border-bottom:1px solid var(--line);
}
.mobile-nav .m-link.active{color:var(--accent)}
.mobile-nav .btn{margin-top:18px;justify-content:center}

/* ---------- 页面首屏 ---------- */
.page-hero{
  position:relative;overflow:hidden;background:var(--ink);color:#F5F4F1;
  padding:calc(var(--header-h) + clamp(56px,8vw,96px)) 0 clamp(56px,8vw,92px);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;opacity:.3;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,43,36,.86) 0%,rgba(14,43,36,.95) 100%);
}
.hero-inner{position:relative;z-index:1;text-align:center;max-width:860px}
.crumbs{
  display:flex;justify-content:center;align-items:center;gap:8px;
  font-size:13px;color:rgba(245,244,241,.66);margin-bottom:22px;
}
.crumbs a:hover{color:#F5F4F1}
.crumbs .cur{color:rgba(245,244,241,.66)}
.hero-title{
  font-size:clamp(2.4rem,5.6vw,4.4rem);font-weight:800;line-height:1.08;letter-spacing:-.02em;
  color:#F5F4F1;animation:heroUp .7s var(--ease) both;
}
.hero-sub{
  margin-top:20px;font-size:clamp(1rem,1.6vw,1.15rem);line-height:1.8;
  color:rgba(245,244,241,.78);max-width:640px;margin-left:auto;margin-right:auto;
  animation:heroUp .7s .12s var(--ease) both;
}
.hero-actions{
  margin-top:34px;display:flex;justify-content:center;gap:14px;flex-wrap:wrap;
  animation:heroUp .7s .2s var(--ease) both;
}
.hero-tags{
  margin-top:38px;display:flex;justify-content:center;flex-wrap:wrap;gap:10px;
  animation:heroUp .7s .28s var(--ease) both;
}
.hero-tags li{
  font-size:13px;letter-spacing:.06em;padding:7px 16px;border-radius:var(--r-pill);
  border:1px solid rgba(245,244,241,.24);color:rgba(245,244,241,.82);
}
@keyframes heroUp{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}

/* ---------- 功能矩阵 ---------- */
.matrix{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:44px}
.matrix-item{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px 26px 28px;transition:background-color .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.matrix-item:hover{background:var(--mist-soft);border-color:rgba(14,43,36,.2);box-shadow:var(--shadow-hover)}
.matrix-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.matrix-num{font-size:1.5rem;font-weight:800;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.matrix-icon{
  width:38px;height:38px;border-radius:10px;background:rgba(201,216,206,.5);
  display:flex;align-items:center;justify-content:center;color:var(--ink);
}
.matrix-item h3{font-size:1.2rem;font-weight:600;margin-bottom:10px}
.matrix-item p{color:var(--t2);font-size:15.5px;line-height:1.85}

/* ---------- 步骤条 ---------- */
.steps{position:relative;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;margin-top:44px}
.steps::before{
  content:"";position:absolute;top:23px;left:10%;right:10%;height:1px;
  background:linear-gradient(90deg,rgba(232,85,47,.5),rgba(232,85,47,.28));
}
.step{position:relative;z-index:1}
.step-dot{
  display:flex;align-items:center;justify-content:center;width:46px;height:46px;border-radius:50%;
  background:var(--white);border:1px solid var(--line);color:var(--accent);font-weight:800;
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.step h3{margin-top:20px;font-size:1.15rem;font-weight:600}
.step p{margin-top:8px;color:var(--t2);font-size:15.5px;line-height:1.85}

/* ---------- 版本与适配 ---------- */
.split{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(28px,5vw,64px);align-items:center}
.figure-frame{
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--mist);
}
.figure-frame img{width:100%;height:auto;object-fit:cover;transition:transform .5s var(--ease)}
.figure-frame:hover img{transform:scale(1.04)}
.row-list{margin-top:8px}
.row-item{
  display:grid;grid-template-columns:150px 1fr 26px;gap:20px;align-items:start;
  padding:22px 0;border-top:1px solid var(--line);transition:background-color .22s var(--ease);
}
.row-list .row-item:first-child{border-top:0}
.row-k{font-weight:700;color:var(--ink);font-size:15.5px}
.row-item p{color:var(--t2);font-size:15.5px;line-height:1.85}
.row-arrow{color:var(--t3);justify-self:end;transition:transform .22s var(--ease),color .22s var(--ease)}
.row-item:hover .row-arrow{transform:translateX(6px);color:var(--accent)}

/* ---------- 注意事项（雾绿带） ---------- */
.band-mist{background:#E7EEE9;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.note-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(28px,4vw,56px);margin-top:12px}
.note-card h3{font-size:1.25rem;font-weight:600;margin-bottom:16px}
.bullet-list li{position:relative;padding-left:20px;margin-bottom:12px;color:var(--t2);font-size:15.5px;line-height:1.85}
.bullet-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--accent);
}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:clamp(28px,5vw,72px)}
.faq-aside{position:sticky;top:110px;align-self:start}
.faq-aside .sec-desc{margin-top:14px}
.faq-acc{margin-top:0}
.faq-acc .accordion-item{background:transparent;border:0;border-top:1px solid var(--line)}
.faq-acc .accordion-item:last-child{border-bottom:1px solid var(--line)}
.faq-acc .accordion-header{margin:0}
.faq-acc .accordion-button{
  background:transparent;border:0;box-shadow:none;padding:22px 40px 22px 0;
  font-size:1.05rem;font-weight:600;color:var(--t1);line-height:1.6;
  display:flex;align-items:baseline;gap:14px;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--ink);background:transparent;box-shadow:none}
.faq-acc .accordion-button:focus{box-shadow:none;border-color:transparent;outline:2px solid var(--accent);outline-offset:-2px}
.faq-no{font-variant-numeric:tabular-nums;font-weight:800;font-size:.95rem;color:var(--t3);transition:color .2s var(--ease)}
.faq-acc .accordion-button:not(.collapsed) .faq-no{color:var(--accent)}
.faq-acc .accordion-button::after{
  width:10px;height:10px;background-image:none;border-right:2px solid var(--ink);border-bottom:2px solid var(--ink);
  transform:rotate(45deg);transition:transform .2s var(--ease);margin-left:auto;flex:0 0 auto;position:absolute;right:10px;
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(-135deg)}
.faq-acc .accordion-button.collapsed::after{transform:rotate(45deg)}
.faq-acc .accordion-body{padding:0 40px 26px 0;color:var(--t2);font-size:16px;line-height:1.9}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--ink);color:#F5F4F1;
  padding:clamp(56px,7vw,96px) 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;background-image:url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center right;opacity:.16;
}
.cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:7fr 5fr;gap:clamp(28px,5vw,64px);align-items:center}
.cta-band h2{color:#F5F4F1;font-size:clamp(1.7rem,3vw,2.4rem)}
.cta-band p{margin-top:16px;color:rgba(245,244,241,.76);font-size:16.5px;max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}
.cta-info{display:grid;gap:14px}
.cta-info li{
  border-top:1px solid var(--line-dark);padding-top:14px;display:flex;justify-content:space-between;gap:16px;
  font-size:14.5px;color:rgba(245,244,241,.76);
}
.cta-info li span:first-child{color:rgba(245,244,241,.56);letter-spacing:.06em;font-size:13px}

/* ---------- 相关入口 ---------- */
.related-list{
  margin-top:32px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;
  border-top:1px solid var(--line);
}
.related-list a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:24px 4px;border-bottom:1px solid var(--line);font-weight:600;color:var(--ink);font-size:16px;
}
.related-list a .arw{color:var(--t3);transition:transform .22s var(--ease),color .22s var(--ease)}
.related-list a:hover .arw{transform:translateX(6px);color:var(--accent)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#F5F4F1;padding:clamp(56px,7vw,88px) 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:clamp(24px,4vw,48px)}
.footer-brand .brand{justify-self:start;margin-bottom:18px}
.footer-brand .brand-line1{color:#F5F4F1}
.footer-brand .brand-line2{color:rgba(245,244,241,.62)}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2)}
.footer-brand p{color:rgba(245,244,241,.7);font-size:15px;line-height:1.85;max-width:360px}
.site-footer h4{color:#F5F4F1;font-size:15px;font-weight:700;letter-spacing:.04em;margin-bottom:18px}
.footer-links li{margin-bottom:12px}
.footer-links a{color:rgba(245,244,241,.74);font-size:15px}
.footer-links a:hover{color:var(--accent)}
.footer-contact li{color:rgba(245,244,241,.74);font-size:15px;margin-bottom:12px;display:flex;gap:10px}
.footer-contact .k{color:rgba(245,244,241,.5);min-width:62px}
.footer-bar{
  margin-top:clamp(36px,5vw,60px);border-top:1px solid var(--line-dark);padding:20px 0 26px;
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(245,244,241,.6);
}
.footer-bar .legal{display:flex;gap:20px}
.footer-bar .legal a{color:rgba(245,244,241,.6)}
.footer-bar .legal a:hover{color:#F5F4F1}

/* ---------- 滚动显现 ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}
section[id]{scroll-margin-top:96px}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .matrix{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:36px}
  .steps::before{display:none}
}
@media (max-width:991.98px){
  .nav-side{display:none}
  .nav-toggle{display:flex}
  .split{grid-template-columns:1fr}
  .split .figure-frame{order:-1}
  .faq-layout{grid-template-columns:1fr}
  .faq-aside{position:static}
  .cta-inner{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767.98px){
  .matrix{grid-template-columns:1fr}
  .note-grid{grid-template-columns:1fr}
  .related-list{grid-template-columns:1fr}
  .row-item{grid-template-columns:1fr;gap:8px}
  .row-arrow{display:none}
  .hero-tags{gap:8px}
}
@media (max-width:575.98px){
  body{font-size:16px}
  .site-footer h4{margin-bottom:12px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bar{flex-direction:column;align-items:flex-start}
  .hero-actions .btn{width:100%;justify-content:center}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
  .figure-frame:hover img{transform:none}
}

/* roulang page: category3 */
:root{
  --ink:#0E2B24;
  --ink-soft:#123329;
  --accent:#E8552F;
  --accent-soft:rgba(232,85,47,.12);
  --paper:#F5F4F1;
  --mist:#C9D8CE;
  --mist-soft:rgba(201,216,206,.42);
  --white:#FFFFFF;
  --t1:#14171A;
  --t2:#3A403C;
  --t3:#7A827C;
  --line:rgba(14,43,36,.12);
  --line-strong:rgba(14,43,36,.2);
  --line-dark:rgba(245,244,241,.14);
  --radius:12px;
  --radius-sm:9px;
  --pill:999px;
  --shadow-hover:0 8px 28px rgba(14,43,36,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --wrap:1200px;

  --bs-body-bg:#F5F4F1;
  --bs-body-color:#3A403C;
  --bs-border-color:rgba(14,43,36,.12);
  --bs-border-radius:12px;
  --bs-border-radius-lg:12px;
  --bs-border-radius-sm:9px;
  --bs-link-color:#0E2B24;
  --bs-link-hover-color:#E8552F;
  --bs-primary:#0E2B24;
  --bs-primary-rgb:14,43,36;
  --bs-font-sans-serif:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--t2);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--ink);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--accent);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--t1);letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}

.wrap{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1400px){ .wrap{max-width:1320px;} }
@media (max-width:575.98px){ .wrap{padding:0 18px;} }

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:transparent;
  transition:background .3s var(--ease),border-color .3s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-stuck{
  background:rgba(245,244,241,.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:24px;
  height:76px;
  transition:height .3s var(--ease);
}
.site-header.is-stuck .header-inner{height:64px;}

.nav-side{display:flex;align-items:center;gap:28px;}
.nav-side--right{justify-content:flex-end;}
.nav-link-item{
  position:relative;
  font-size:15px;
  color:var(--t2);
  padding:6px 0;
  white-space:nowrap;
}
.nav-link-item::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s var(--ease);
}
.nav-link-item:hover{color:var(--ink);}
.nav-link-item:hover::after{transform:scaleX(1);}
.nav-link-item.active{color:var(--ink);font-weight:600;}
.nav-link-item.active::after{transform:scaleX(1);}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  justify-self:center;
}
.brand-mark{
  width:38px;height:38px;
  display:grid;place-items:center;
  background:var(--ink);
  border-radius:10px;
  flex:none;
}
.brand-text{display:flex;flex-direction:column;line-height:1.12;}
.brand-line1{font-size:16px;font-weight:800;color:var(--t1);letter-spacing:.06em;}
.brand-line2{font-size:11px;color:var(--t3);letter-spacing:.14em;}

.btn-cta{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:40px;
  padding:0 20px;
  border-radius:var(--pill);
  background:var(--ink);
  color:#F5F4F1;
  font-size:14.5px;
  font-weight:600;
  border:1px solid var(--ink);
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.btn-cta:hover{background:var(--accent);border-color:var(--accent);color:#fff;}
.btn-cta svg{transition:transform .2s var(--ease);}
.btn-cta:hover svg{transform:translateX(4px);}

.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--line);
  background:var(--white);
  border-radius:10px;
  padding:0;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  cursor:pointer;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  background:var(--ink);
  border-radius:2px;
  transition:transform .25s var(--ease),opacity .25s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.mobile-nav{
  display:none;
  border-top:1px solid var(--line);
  background:var(--paper);
  padding:10px 24px 22px;
}
.mobile-nav.is-open{display:block;}
.mobile-nav a{
  display:flex;
  align-items:center;
  height:56px;
  font-size:16px;
  border-bottom:1px solid var(--line);
  color:var(--t2);
}
.mobile-nav a.active{color:var(--accent);font-weight:600;}
.mobile-nav a.m-cta{
  justify-content:center;
  margin-top:16px;
  height:48px;
  border:0;
  border-radius:var(--pill);
  background:var(--ink);
  color:#F5F4F1;
  font-weight:600;
}

@media (max-width:991.98px){
  .header-inner{grid-template-columns:44px 1fr 44px;gap:12px;}
  .nav-side{display:none;}
  .nav-toggle{display:flex;}
  .brand{justify-self:center;}
}

/* ---------- buttons ---------- */
.btn-solid{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:50px;
  padding:0 28px;
  border-radius:var(--pill);
  background:var(--ink);
  color:#F5F4F1;
  font-size:15.5px;
  font-weight:600;
  border:1px solid var(--ink);
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-solid:hover{background:var(--accent);border-color:var(--accent);color:#fff;}
.btn-solid svg{transition:transform .2s var(--ease);}
.btn-solid:hover svg{transform:translateX(6px);}

.btn-ghost{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:50px;
  padding:0 26px;
  border-radius:var(--pill);
  border:1px solid var(--line-strong);
  color:var(--ink);
  font-size:15.5px;
  font-weight:600;
  background:transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-ghost:hover{background:var(--ink);border-color:var(--ink);color:#F5F4F1;}

.btn-line{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  color:var(--ink);
  border-bottom:1px solid var(--accent);
  padding-bottom:3px;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.btn-line:hover{color:var(--accent);}
.btn-line svg{transition:transform .2s var(--ease);}
.btn-line:hover svg{transform:translateX(5px);}

/* ---------- hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  background:
    repeating-linear-gradient(90deg,rgba(14,43,36,.045) 0 1px,transparent 1px 88px),
    repeating-linear-gradient(0deg,rgba(14,43,36,.045) 0 1px,transparent 1px 88px),
    var(--paper);
  padding:clamp(56px,9vh,96px) 0 clamp(48px,7vh,80px);
}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:clamp(28px,5vw,64px);
  align-items:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:.08em;
  color:var(--ink);
  background:var(--mist-soft);
  border-radius:var(--pill);
  padding:6px 14px;
  margin-bottom:22px;
}
.eyebrow::before{
  content:"";
  width:6px;height:6px;
  border-radius:50%;
  background:var(--accent);
}
.hero h1{
  font-size:clamp(2.15rem,4.6vw,3.35rem);
  font-weight:800;
  line-height:1.12;
  letter-spacing:-.02em;
  margin-bottom:20px;
}
.hero-sub{
  font-size:clamp(1rem,1.4vw,1.15rem);
  color:var(--t2);
  max-width:30em;
  margin-bottom:32px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-media{
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--mist-soft);
  aspect-ratio:16/10;
}
.hero-media img{
  width:100%;height:100%;
  object-fit:cover;
  opacity:0;
  transition:opacity .5s var(--ease);
}
.hero-media img.is-loaded{opacity:1;}

@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr;}
  .hero-media{aspect-ratio:16/9;order:-1;max-height:34vh;}
  .hero h1{font-size:clamp(2.15rem,7vw,2.7rem);}
}

/* ---------- bands ---------- */
.band{padding:clamp(64px,9vw,118px) 0;}
.band--dark{background:var(--ink);color:rgba(245,244,241,.66);}
.band--dark h2,.band--dark h3{color:#F5F4F1;}
.band--tint{background:#EFEFEA;}

.sec-head{max-width:760px;margin-bottom:clamp(32px,4vw,56px);}
.sec-head .kicker{
  display:block;
  font-size:13px;
  letter-spacing:.08em;
  color:var(--accent);
  font-weight:700;
  margin-bottom:12px;
}
.sec-head h2{
  font-size:clamp(1.8rem,3.2vw,2.6rem);
  font-weight:700;
  line-height:1.22;
  margin-bottom:14px;
}
.sec-head p{color:var(--t2);max-width:44em;}
.band--dark .sec-head p{color:rgba(245,244,241,.66);}

/* ---------- login split ---------- */
.login-row{row-gap:48px;}
.login-aside{position:relative;}
@media (min-width:992px){
  .login-aside{
    position:sticky;
    top:104px;
    padding-right:clamp(24px,4vw,56px);
  }
  .login-steps{padding-left:clamp(24px,4vw,56px);}
}
.login-aside h2{
  font-size:clamp(1.6rem,2.6vw,2.15rem);
  font-weight:700;
  line-height:1.26;
  margin-bottom:16px;
}
.login-aside > p{color:var(--t2);margin-bottom:24px;}
.dot-list{margin-bottom:26px;}
.dot-list li{
  position:relative;
  padding-left:22px;
  margin-bottom:12px;
  color:var(--t2);
  font-size:15.5px;
}
.dot-list li::before{
  content:"";
  position:absolute;
  left:0;top:13px;
  width:8px;height:8px;
  background:var(--accent);
  border-radius:2px;
}
.aside-figure{
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--mist-soft);
  aspect-ratio:3/2;
  margin-bottom:22px;
}
.aside-figure img{width:100%;height:100%;object-fit:cover;}

/* ---------- accordion list ---------- */
.acc{border-top:1px solid var(--line);}
.acc-item{border-bottom:1px solid var(--line);}
.acc-head{margin:0;font-size:1rem;font-weight:400;}
.acc-btn{
  width:100%;
  display:flex;
  align-items:center;
  gap:18px;
  background:transparent;
  border:0;
  padding:24px 4px;
  text-align:left;
  cursor:pointer;
  transition:background .2s var(--ease),padding-left .2s var(--ease);
}
.acc-btn:hover{background:rgba(201,216,206,.28);padding-left:12px;}
.acc-num{
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--t3);
  font-variant-numeric:tabular-nums;
  flex:none;
  width:30px;
  transition:color .2s var(--ease);
}
.acc-title{
  flex:1;
  font-size:clamp(1.02rem,1.5vw,1.2rem);
  font-weight:600;
  color:var(--t1);
  line-height:1.5;
}
.acc-icon{
  flex:none;
  width:22px;height:22px;
  position:relative;
}
.acc-icon::before,.acc-icon::after{
  content:"";
  position:absolute;
  background:var(--ink);
  border-radius:2px;
  transition:transform .22s var(--ease),background .22s var(--ease);
}
.acc-icon::before{left:0;top:10px;width:22px;height:2px;}
.acc-icon::after{left:10px;top:0;width:2px;height:22px;}
.acc-item.open .acc-num{color:var(--accent);}
.acc-item.open .acc-icon::after{transform:rotate(90deg);}
.acc-item.open .acc-icon::before{background:var(--accent);}
.acc-panel{
  max-height:0;
  overflow:hidden;
  transition:max-height .34s var(--ease);
}
.acc-panel-inner{
  padding:0 4px 28px 52px;
  color:var(--t2);
  font-size:15.5px;
}
.acc-panel-inner p{margin-bottom:14px;}
.field-list li{
  position:relative;
  padding-left:18px;
  margin-bottom:10px;
  font-size:15px;
  color:var(--t2);
}
.field-list li::before{
  content:"";
  position:absolute;
  left:0;top:12px;
  width:7px;height:7px;
  border-radius:50%;
  background:var(--accent);
}
.field-list strong{color:var(--t1);font-weight:600;}

/* ---------- safety band ---------- */
.safety-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;
  border-top:1px solid var(--line-dark);
}
.safety-item{
  padding:34px 26px 8px 0;
  border-right:1px solid var(--line-dark);
}
.safety-item:last-child{border-right:0;}
.safety-item .num{
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
  display:block;
  margin-bottom:14px;
}
.safety-item h3{
  font-size:1.15rem;
  font-weight:600;
  margin-bottom:10px;
}
.safety-item p{font-size:15px;color:rgba(245,244,241,.66);}
@media (max-width:991.98px){
  .safety-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .safety-item{nth-child(2n){border-right:0;}}
  .safety-item:nth-child(2n){border-right:0;}
}
@media (max-width:575.98px){
  .safety-grid{grid-template-columns:1fr;}
  .safety-item{border-right:0;border-bottom:1px solid var(--line-dark);padding:26px 0;}
  .safety-item:last-child{border-bottom:0;}
}

/* ---------- compare ---------- */
.compare-scroll{
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
  border-top:1px solid var(--line);
}
.compare{
  display:grid;
  grid-template-columns:minmax(150px,1.05fr) repeat(3,minmax(170px,1fr));
  min-width:760px;
}
.cmp-col{border-right:1px solid var(--line);}
.cmp-col:last-child{border-right:0;}
.cmp-head{
  padding:22px 20px;
  min-height:88px;
  display:flex;
  align-items:center;
  background:var(--mist-soft);
}
.cmp-head h3{font-size:1.05rem;font-weight:700;line-height:1.45;}
.cmp-col--label .cmp-head{background:transparent;}
.cmp-col--label .cmp-head span{
  font-size:13px;
  letter-spacing:.08em;
  color:var(--t3);
  font-weight:700;
}
.cmp-row{
  padding:16px 20px;
  min-height:66px;
  display:flex;
  align-items:center;
  border-top:1px solid var(--line);
  font-size:15px;
  color:var(--t2);
}
.cmp-col--label .cmp-row{color:var(--t3);font-size:14px;}
.cmp-col:not(.cmp-col--label) .cmp-row:hover{background:rgba(201,216,206,.22);}

/* ---------- when relogin ---------- */
.split{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:clamp(28px,5vw,64px);
  align-items:center;
}
.split-media{
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--mist-soft);
  aspect-ratio:3/2;
}
.split-media img{width:100%;height:100%;object-fit:cover;}
.split h2{
  font-size:clamp(1.7rem,2.9vw,2.35rem);
  font-weight:700;
  line-height:1.24;
  margin-bottom:18px;
}
.split p{color:var(--t2);margin-bottom:22px;}
.case-list{border-top:1px solid var(--line);margin-bottom:26px;}
.case-list li{
  display:flex;
  gap:16px;
  align-items:flex-start;
  padding:16px 0;
  border-bottom:1px solid var(--line);
}
.case-list .idx{
  font-size:13px;
  font-weight:700;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
  flex:none;
  padding-top:4px;
}
.case-list .txt strong{display:block;color:var(--t1);font-weight:600;font-size:1.02rem;}
.case-list .txt span{font-size:14.5px;color:var(--t3);}
@media (max-width:900px){
  .split{grid-template-columns:1fr;}
  .split-media{order:-1;}
}

/* ---------- faq ---------- */
.faq-grid{
  display:grid;
  grid-template-columns:minmax(0,4fr) minmax(0,8fr);
  gap:clamp(28px,5vw,72px);
}
@media (min-width:992px){
  .faq-aside{position:sticky;top:104px;align-self:start;}
}
.faq-aside h2{
  font-size:clamp(1.6rem,2.6vw,2.1rem);
  font-weight:700;
  line-height:1.26;
  margin-bottom:14px;
}
.faq-aside p{color:var(--t2);font-size:15.5px;margin-bottom:22px;}
@media (max-width:991.98px){
  .faq-grid{grid-template-columns:1fr;}
}

/* ---------- entries ---------- */
.entry-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
  margin-top:8px;
}
.entry{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:22px 24px;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius);
  transition:box-shadow .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease);
}
.entry:hover{
  box-shadow:var(--shadow-hover);
  border-color:var(--line-strong);
  transform:translateY(-2px);
}
.entry h3{
  font-size:1.05rem;
  font-weight:600;
  margin-bottom:4px;
}
.entry p{font-size:14px;color:var(--t3);line-height:1.6;}
.entry svg{flex:none;transition:transform .24s var(--ease);}
.entry:hover svg{transform:translateX(6px);}
@media (max-width:900px){
  .entry-grid{grid-template-columns:1fr;}
}

/* ---------- cta ---------- */
.cta-band{
  background:var(--ink);
  border-radius:0;
  padding:clamp(56px,8vw,96px) 0;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  inset:auto -10% -60% 60%;
  height:280px;
  background:radial-gradient(circle at center,rgba(232,85,47,.28),transparent 68%);
  pointer-events:none;
}
.cta-inner{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);
  gap:36px;
  align-items:center;
}
.cta-inner h2{
  font-size:clamp(1.7rem,3vw,2.4rem);
  font-weight:700;
  line-height:1.24;
  color:#F5F4F1;
  margin-bottom:14px;
}
.cta-inner p{color:rgba(245,244,241,.66);font-size:15.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}
.cta-actions .btn-solid{background:var(--accent);border-color:var(--accent);}
.cta-actions .btn-solid:hover{background:#F5F4F1;border-color:#F5F4F1;color:var(--ink);}
.cta-actions .btn-ghost{border-color:rgba(245,244,241,.34);color:#F5F4F1;}
.cta-actions .btn-ghost:hover{background:#F5F4F1;color:var(--ink);border-color:#F5F4F1;}
@media (max-width:900px){
  .cta-inner{grid-template-columns:1fr;}
  .cta-actions{justify-content:flex-start;}
}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink);
  color:rgba(245,244,241,.66);
  padding:clamp(56px,7vw,88px) 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.6fr) minmax(0,1fr) minmax(0,1fr) minmax(0,1.2fr);
  gap:clamp(28px,4vw,56px);
  padding-bottom:48px;
  border-bottom:1px solid var(--line-dark);
}
.site-footer .brand{margin-bottom:18px;justify-self:start;}
.site-footer .brand-line1{color:#F5F4F1;}
.site-footer .brand-line2{color:rgba(245,244,241,.6);}
.site-footer .brand-mark{background:rgba(245,244,241,.1);}
.footer-brand p{font-size:15px;line-height:1.85;max-width:36em;color:rgba(245,244,241,.66);}
.site-footer h4{
  font-size:14px;
  letter-spacing:.08em;
  font-weight:700;
  color:#F5F4F1;
  margin-bottom:18px;
}
.footer-links li{margin-bottom:12px;}
.footer-links a{
  font-size:14.5px;
  color:rgba(245,244,241,.66);
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.footer-links a:hover{color:var(--accent);padding-left:5px;}
.footer-contact li{
  font-size:14.5px;
  margin-bottom:14px;
  color:rgba(245,244,241,.66);
}
.footer-contact .k{
  display:block;
  font-size:12.5px;
  letter-spacing:.08em;
  color:rgba(245,244,241,.45);
  margin-bottom:2px;
}
.footer-bar{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  align-items:center;
  justify-content:space-between;
  padding:22px 0 28px;
  font-size:13px;
  color:rgba(245,244,241,.6);
}
.footer-bar a{color:rgba(245,244,241,.6);}
.footer-bar a:hover{color:var(--accent);}
.footer-bar .legal{display:flex;gap:20px;}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr;}
}

/* ---------- reveal ---------- */
.reveal{
  opacity:0;
  transform:translateY(24px);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
}
.reveal.is-in{opacity:1;transform:none;}

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

/* roulang page: category4 */
:root{
  --ink:#0E2B24;
  --ink-soft:#14382F;
  --flame:#E8552F;
  --paper:#F5F4F1;
  --mist:#C9D8CE;
  --mist-soft:#E8EDE9;
  --white:#FFFFFF;
  --t1:#14171A;
  --t2:#3A403C;
  --t3:#7A827C;
  --line:rgba(14,43,36,.12);
  --line-strong:rgba(14,43,36,.22);
  --r-card:12px;
  --r-input:9px;
  --r-pill:999px;
  --shadow-hover:0 8px 28px rgba(14,43,36,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --bs-primary:#0E2B24;
  --bs-body-bg:#F5F4F1;
  --bs-body-color:#3A403C;
  --bs-border-color:rgba(14,43,36,.12);
  --bs-border-radius:12px;
  --bs-font-sans-serif:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  background:var(--paper);
  color:var(--t2);
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--t1);line-height:1.24}
p{margin:0}
::selection{background:var(--flame);color:#fff}
:focus-visible{outline:2px solid var(--flame);outline-offset:3px;border-radius:4px}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1400px){.wrap{max-width:1320px}}
@media (max-width:575.98px){.wrap{padding:0 18px}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(245,244,241,.9);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .3s var(--ease),border-color .3s var(--ease);
}
.site-header.is-stuck{background:rgba(245,244,241,.98);border-bottom-color:var(--line)}
.nav-shell{display:flex;align-items:center;height:76px;transition:height .3s var(--ease);position:relative}
.site-header.is-stuck .nav-shell{height:64px}
.nav-side{display:none;flex:1;align-items:center;gap:26px}
.nav-side--right{justify-content:flex-end;gap:22px}
@media (min-width:992px){.nav-side{display:flex}}
.nav-link-item{
  position:relative;font-size:15px;color:var(--t2);padding:6px 0;
  letter-spacing:.01em;white-space:nowrap;transition:color .2s var(--ease);
}
.nav-link-item::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;
  background:var(--flame);transition:right .24s var(--ease);
}
.nav-link-item:hover{color:var(--ink)}
.nav-link-item:hover::after{right:0}
.nav-link-item.active{color:var(--ink);font-weight:600}
.nav-link-item.active::after{right:0}

.brand{display:flex;align-items:center;gap:10px;padding:0 12px}
.brand-mark{
  width:38px;height:38px;border-radius:11px;background:var(--ink);
  display:grid;place-items:center;flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.06}
.brand-line1{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:.05em}
.brand-line2{font-size:11px;letter-spacing:.16em;color:var(--t3);margin-top:2px}

.btn-login{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--ink);color:#fff;font-size:14px;font-weight:600;
  padding:10px 20px;border-radius:var(--r-pill);
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.btn-login:hover{background:var(--flame);color:#fff}
.btn-login .arr{transition:transform .2s var(--ease)}
.btn-login:hover .arr{transform:translateX(4px)}

.nav-toggler{
  position:absolute;right:24px;top:50%;transform:translateY(-50%);
  width:44px;height:44px;border:1px solid var(--line);background:#fff;
  border-radius:10px;display:grid;place-items:center;gap:0;cursor:pointer;padding:0;
}
@media (min-width:992px){.nav-toggler{display:none}}
.nav-toggler span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;margin:2px 0;transition:transform .24s var(--ease),opacity .24s var(--ease)}
.nav-toggler.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggler.is-open span:nth-child(2){opacity:0}
.nav-toggler.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
@media (max-width:575.98px){.nav-toggler{right:18px}}

.mobile-panel{
  display:none;position:absolute;left:0;right:0;top:100%;
  background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  box-shadow:0 18px 40px rgba(14,43,36,.10);overflow:hidden;
}
.mobile-panel.open{display:block}
.mobile-panel a{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;padding:0 24px;font-size:16px;color:var(--t1);
  border-bottom:1px solid var(--line);transition:background .2s var(--ease);
}
.mobile-panel a:last-child{border-bottom:0}
.mobile-panel a:hover,.mobile-panel a.active{background:var(--mist-soft);color:var(--ink)}
.mobile-panel a .m-tag{font-size:12px;color:var(--t3);letter-spacing:.06em}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  border-radius:var(--r-pill);padding:14px 28px;
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  cursor:pointer;
}
.btn .arr{transition:transform .2s var(--ease)}
.btn:hover .arr{transform:translateX(6px)}
.btn-solid{background:var(--ink);color:#fff}
.btn-solid:hover{background:var(--flame);color:#fff}
.btn-outline{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-outline:hover{background:var(--ink);color:#fff}

.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;
  color:var(--ink);border-bottom:1px solid var(--flame);padding-bottom:2px;
  transition:color .2s var(--ease);
}
.text-link:hover{color:var(--flame)}
.text-link .arr{transition:transform .2s var(--ease)}
.text-link:hover .arr{transform:translateX(6px)}

/* ---------- 通用板块 ---------- */
.section{padding:clamp(58px,7.5vw,96px) 0}
.section-head{max-width:720px;margin-bottom:44px}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--t3);margin-bottom:16px;
}
.kicker::before{content:"";width:18px;height:2px;background:var(--flame);border-radius:2px}
h2{font-size:clamp(1.7rem,3.2vw,2.5rem);font-weight:700;letter-spacing:-.01em}
.lead{margin-top:16px;font-size:16.5px;color:var(--t2);line-height:1.9}

/* ---------- Hero ---------- */
.hero{padding:clamp(48px,6vw,84px) 0 clamp(44px,5vw,64px)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:var(--r-pill);
  background:var(--mist-soft);color:var(--ink);
  font-size:13px;font-weight:600;letter-spacing:.06em;margin-bottom:22px;
}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--flame)}
h1{
  font-size:clamp(2.2rem,5vw,3.4rem);
  font-weight:800;line-height:1.1;letter-spacing:-.02em;color:var(--t1);
}
.hero-sub{margin-top:22px;font-size:17px;color:var(--t2);max-width:36em;line-height:1.9}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.stat-strip{
  display:flex;flex-wrap:wrap;gap:0;margin-top:40px;
  border-top:1px solid var(--line);padding-top:22px;
}
.stat-strip li{
  padding-right:26px;margin-right:26px;border-right:1px solid var(--line);
  display:flex;flex-direction:column;gap:4px;
}
.stat-strip li:last-child{border-right:0;margin-right:0;padding-right:0}
.stat-strip strong{font-size:17px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums}
.stat-strip span{font-size:13px;color:var(--t3);letter-spacing:.04em}
@media (max-width:575.98px){
  .stat-strip li{border-right:0;margin:0 0 14px;padding:0;width:50%}
}
.hero-media{
  margin:0;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);background:var(--mist);
}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover}

/* ---------- 发布要点 ---------- */
.release-list{border-top:1px solid var(--line)}
.release-item{
  display:grid;grid-template-columns:118px 1fr;gap:30px;
  padding:30px 16px;border-bottom:1px solid var(--line);
  transition:background .24s var(--ease);
}
.release-item:hover{background:rgba(201,216,206,.32)}
.rel-date{display:flex;flex-direction:column;gap:4px}
.rel-date .d{font-size:2rem;font-weight:800;color:var(--ink);line-height:1;font-variant-numeric:tabular-nums}
.rel-date .m{font-size:12.5px;color:var(--t3);letter-spacing:.1em}
.tag{
  display:inline-block;padding:4px 12px;border-radius:var(--r-pill);
  background:var(--mist-soft);color:var(--ink);font-size:12.5px;font-weight:600;letter-spacing:.04em;
}
.rel-body h3{font-size:1.25rem;font-weight:600;margin:12px 0 10px}
.rel-body p{font-size:15.5px;color:var(--t2);line-height:1.85;max-width:66ch}
.rel-body .text-link{margin-top:14px}
@media (max-width:767.98px){
  .release-item{grid-template-columns:1fr;gap:12px;padding:26px 12px}
  .rel-date{flex-direction:row;align-items:baseline;gap:8px}
}

/* ---------- 深色数据带 ---------- */
.band-dark{background:var(--ink);color:var(--paper);padding:clamp(60px,8vw,104px) 0}
.band-dark h2{color:var(--paper)}
.band-dark .lead{color:rgba(245,244,241,.66)}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);margin-top:48px}
.metric{border-left:1px solid rgba(255,255,255,.14);padding:0 28px}
.metric:first-child{border-left:0;padding-left:0}
.metric .val{display:flex;align-items:baseline;gap:6px}
.metric .num{
  font-size:clamp(2.2rem,4.4vw,3.4rem);font-weight:800;color:#fff;line-height:1;
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.metric .unit{font-size:14px;font-weight:600;color:var(--flame);letter-spacing:.04em}
.metric p{margin-top:16px;font-size:14.5px;line-height:1.8;color:rgba(245,244,241,.66)}
@media (max-width:991.98px){
  .metric-grid{grid-template-columns:1fr 1fr;gap:0}
  .metric{border-left:0;padding:26px 0;border-top:1px solid rgba(255,255,255,.14)}
  .metric:nth-child(1),.metric:nth-child(2){border-top:0;padding-top:0}
  .metric:nth-child(odd){padding-right:24px}
}
@media (max-width:575.98px){
  .metric-grid{grid-template-columns:1fr}
  .metric{padding-right:0!important}
  .metric:nth-child(2){border-top:1px solid rgba(255,255,255,.14);padding-top:26px}
}

/* ---------- 动态方向 ---------- */
.topic-split{display:grid;grid-template-columns:.92fr 1.08fr;gap:56px;align-items:center}
.topic-media{
  margin:0;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);background:var(--mist);
}
.topic-media img{width:100%;aspect-ratio:3/2;object-fit:cover}
.topic-list{border-top:1px solid var(--line)}
.topic-item{
  display:flex;gap:20px;align-items:flex-start;
  padding:22px 8px;border-bottom:1px solid var(--line);
  transition:background .2s var(--ease);
}
.topic-item:hover{background:rgba(201,216,206,.28)}
.topic-num{
  font-size:14px;font-weight:700;color:var(--flame);
  font-variant-numeric:tabular-nums;padding-top:5px;flex:0 0 auto;
}
.topic-item h3{font-size:1.08rem;font-weight:600;margin-bottom:8px}
.topic-item p{font-size:15px;color:var(--t2);line-height:1.8}
@media (max-width:991.98px){
  .topic-split{grid-template-columns:1fr;gap:36px}
}

/* ---------- 订阅 ---------- */
.sub-panel{
  display:grid;grid-template-columns:1fr 1fr;gap:52px;
  background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:clamp(28px,4vw,56px);
}
.sub-copy h2{font-size:clamp(1.5rem,2.6vw,2rem)}
.sub-copy p{margin-top:16px;font-size:15.5px;color:var(--t2);line-height:1.9}
.sub-points{margin-top:26px;display:grid;gap:12px}
.sub-points li{display:flex;gap:12px;font-size:15px;color:var(--t2)}
.sub-points li::before{
  content:"";width:8px;height:8px;border-radius:2px;background:var(--flame);
  flex:0 0 auto;margin-top:10px;
}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--t2);margin-bottom:8px}
.form-control,.form-select{
  width:100%;height:48px;border-radius:var(--r-input);
  border:1px solid var(--line);background:var(--paper);
  font-size:15px;color:var(--t1);box-shadow:none;
  padding:0 16px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
textarea.form-control{height:auto;min-height:104px;padding:13px 16px;line-height:1.7;resize:vertical}
.form-control::placeholder,textarea.form-control::placeholder{color:#A6ADA8}
.form-control:focus,.form-select:focus{
  outline:none;border-color:var(--flame);background:#fff;
  box-shadow:0 0 0 3px rgba(232,85,47,.14);
}
.form-note{margin-top:14px;font-size:13px;color:var(--t3);line-height:1.7}
@media (max-width:991.98px){
  .sub-panel{grid-template-columns:1fr;gap:32px}
}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.faq-aside{position:sticky;top:110px}
.faq-aside p{margin-top:16px;font-size:15.5px;color:var(--t2)}
.faq-aside .btn{margin-top:26px}
.acc{border-top:1px solid var(--line)}
.acc-item{border-bottom:1px solid var(--line)}
.acc-btn{
  width:100%;background:none;border:0;text-align:left;cursor:pointer;
  padding:22px 46px 22px 0;position:relative;
  font-size:17px;font-weight:600;color:var(--t1);line-height:1.6;
  transition:color .2s var(--ease);
}
.acc-btn:hover{color:var(--ink)}
.acc-num{
  display:inline-block;min-width:26px;font-size:13px;font-weight:700;
  color:var(--t3);font-variant-numeric:tabular-nums;
  transition:color .2s var(--ease);
}
.acc-btn[aria-expanded="true"] .acc-num{color:var(--flame)}
.acc-btn::after{
  content:"";position:absolute;right:12px;top:50%;
  width:9px;height:9px;border-right:2px solid var(--t3);border-bottom:2px solid var(--t3);
  transform:translateY(-70%) rotate(45deg);
  transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.acc-btn[aria-expanded="true"]::after{transform:translateY(-30%) rotate(-135deg);border-color:var(--flame)}
.acc-body{padding:0 46px 26px 26px;font-size:16px;color:var(--t2);line-height:1.9}
.acc-body p + p{margin-top:12px}
@media (max-width:991.98px){
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .faq-aside{position:static}
}

/* ---------- CTA 面板 ---------- */
.cta-panel{
  display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;
  background:var(--mist-soft);border-radius:18px;padding:clamp(30px,4.6vw,58px);
}
.cta-panel h2{font-size:clamp(1.5rem,2.6vw,2.1rem)}
.cta-panel p{margin-top:16px;font-size:15.5px;color:var(--t2);line-height:1.9}
.cta-panel .btn{margin-top:28px}
.check-list{display:grid;gap:14px}
.check-list li{
  display:flex;gap:12px;font-size:15.5px;color:var(--t2);
  background:#fff;border:1px solid var(--line);border-radius:10px;padding:16px 18px;
}
.check-list li::before{
  content:"";width:8px;height:8px;border-radius:2px;background:var(--flame);
  flex:0 0 auto;margin-top:10px;
}
@media (max-width:991.98px){.cta-panel{grid-template-columns:1fr;gap:30px}}

/* ---------- 相关栏目 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:36px}
.rel-card{
  display:grid;grid-template-columns:1fr auto;gap:6px 14px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.rel-card:hover{border-color:var(--line-strong);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.rel-card .rc-t{font-size:16.5px;font-weight:700;color:var(--t1)}
.rel-card .rc-d{grid-column:1 / 2;font-size:14px;color:var(--t3);line-height:1.75}
.rel-card .rc-arr{grid-row:1 / 3;color:var(--flame);font-size:18px;transition:transform .2s var(--ease)}
.rel-card:hover .rc-arr{transform:translateX(6px)}
@media (max-width:991.98px){.related-grid{grid-template-columns:1fr 1fr}}
@media (max-width:575.98px){.related-grid{grid-template-columns:1fr}}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);color:var(--paper);
  margin-top:clamp(60px,8vw,110px);
  padding:clamp(48px,7vw,88px) 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px}
.footer-brand .brand{padding:0;margin-bottom:20px}
.footer-brand .brand-mark{background:rgba(255,255,255,.10)}
.footer-brand .brand-line1{color:var(--paper)}
.footer-brand .brand-line2{color:rgba(245,244,241,.66)}
.footer-brand p{font-size:14.5px;line-height:1.9;color:rgba(245,244,241,.66);max-width:36em}
.site-footer h4{
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:rgba(245,244,241,.66);margin-bottom:18px;
}
.footer-links li a{
  display:inline-block;font-size:15px;color:rgba(245,244,241,.82);
  line-height:2.5;transition:color .2s var(--ease);
}
.footer-links li a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;text-decoration-color:var(--flame)}
.footer-contact li{font-size:15px;color:rgba(245,244,241,.82);line-height:2.4}
.footer-contact .k{color:rgba(245,244,241,.5);margin-right:10px}
.footer-bar{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.14);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(245,244,241,.6);
}
.footer-bar .legal a{margin-left:20px;color:rgba(245,244,241,.6);transition:color .2s var(--ease)}
.footer-bar .legal a:hover{color:#fff}
@media (max-width:991.98px){.footer-grid{grid-template-columns:1fr 1fr;gap:36px}}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bar .legal a{margin:0 16px 0 0}
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}