/* roulang page: index */
:root{
  --ink:#0C1512;
  --ink-2:#17231F;
  --text:#1E2A26;
  --gold:#C6A15B;
  --gold-deep:#9E7B3F;
  --paper:#F7F3EA;
  --paper-2:#EDE6D8;
  --card:#FFFDF8;
  --mist:#6E8F84;
  --line:#D8D0C0;
  --line-dark:rgba(247,243,234,.16);
  --warn:#A65D4E;
  --r-sm:2px;
  --r:4px;
  --shadow:0 12px 40px rgba(12,21,18,.08);
  --ease:cubic-bezier(.2,.7,.2,1);
  --serif:"Noto Serif CJK SC","Source Han Serif SC","Songti SC",STSong,serif;
  --sans:"Noto Sans CJK SC","PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--paper);
  padding-bottom:84px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--gold-deep);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--gold-deep);}
p{margin:0 0 1.1em;}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:600;color:var(--ink);letter-spacing:-.01em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
a:focus-visible,button:focus-visible,.btn:focus-visible,input:focus-visible{
  outline:2px solid var(--gold);outline-offset:3px;
}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 40px;}
.narrow{max-width:760px;}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--gold-deep);font-family:var(--sans);font-weight:600;
}
.eyebrow.on-dark{color:var(--gold);}
.lead{font-size:1.125rem;line-height:1.8;color:#3A4642;}
.on-dark .lead,.dark-block .lead{color:rgba(247,243,234,.76);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:48px;padding:0 26px;border-radius:var(--r-sm);
  font-size:.9375rem;font-weight:600;letter-spacing:.08em;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
  text-decoration:none;
}
.btn .arrow{transition:transform .22s var(--ease);display:inline-block;}
.btn:hover .arrow{transform:translateX(4px);}
.btn-gold{background:var(--gold);color:var(--ink);border-color:var(--gold);}
.btn-gold:hover{background:var(--ink);color:var(--gold);border-color:var(--gold);}
.btn-ink{background:var(--ink);color:var(--paper);border-color:var(--ink);}
.btn-ink:hover{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost{background:transparent;color:var(--paper);border-color:var(--line-dark);}
.btn-ghost:hover{background:var(--paper);color:var(--ink);border-color:var(--paper);}
.btn-ghost.on-light{color:var(--text);border-color:var(--line);}
.btn-ghost.on-light:hover{background:var(--ink);color:var(--paper);border-color:var(--ink);}
.btn:active{transform:translateY(1px);}
.btn-sm{height:40px;padding:0 18px;font-size:.875rem;}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--gold-deep);position:relative;}
.link-arrow::after{content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;background:var(--gold-deep);transition:width .24s var(--ease);}
.link-arrow:hover::after{width:100%;}
.link-arrow .arrow{transition:transform .22s var(--ease);}
.link-arrow:hover .arrow{transform:translateX(4px);}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1040;
  transition:background .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-solid{background:var(--paper);border-bottom:1px solid var(--line);box-shadow:0 6px 24px rgba(12,21,18,.06);}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  height:76px;gap:24px;
}
.nav-side{display:flex;align-items:center;gap:30px;}
.nav-right{justify-content:flex-end;}
.nav-side a{
  font-size:.9375rem;font-weight:500;letter-spacing:.04em;position:relative;
  color:rgba(247,243,234,.82);padding:6px 0;white-space:nowrap;
}
.site-header.is-solid .nav-side a{color:var(--text);}
.nav-side a::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--gold);
  transition:width .24s var(--ease);
}
.nav-side a:hover::after{width:100%;}
.nav-side a:hover{color:var(--gold);}
.site-header.is-solid .nav-side a:hover{color:var(--gold-deep);}
.nav-side a.is-active::before{
  content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--gold);
}
.brand{display:inline-flex;align-items:center;gap:10px;justify-self:center;color:var(--paper);}
.site-header.is-solid .brand{color:var(--ink);}
.brand-mark{width:8px;height:8px;background:var(--gold);border-radius:50%;flex:none;}
.brand-name{
  font-family:var(--serif);font-size:1.125rem;font-weight:600;letter-spacing:.12em;
  white-space:nowrap;
}
.nav-cta{margin-left:6px;}
.menu-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line-dark);border-radius:var(--r-sm);
  background:transparent;position:relative;flex:none;justify-self:end;
}
.site-header.is-solid .menu-toggle{border-color:var(--line);}
.menu-toggle span{
  position:absolute;left:12px;right:12px;height:1.5px;background:var(--paper);
  transition:transform .24s var(--ease),opacity .2s var(--ease);
}
.site-header.is-solid .menu-toggle span{background:var(--ink);}
.menu-toggle span:nth-child(1){top:16px;}
.menu-toggle span:nth-child(2){top:21.5px;}
.menu-toggle span:nth-child(3){top:27px;}

/* mobile menu */
.mobile-menu{
  position:fixed;inset:0;background:var(--paper);z-index:1060;
  display:flex;flex-direction:column;padding:28px 24px 32px;
  transform:translateY(-100%);opacity:0;pointer-events:none;
  transition:transform .3s var(--ease),opacity .3s var(--ease);
}
.mobile-menu.is-open{transform:translateY(0);opacity:1;pointer-events:auto;}
.mobile-menu-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px;}
.mobile-menu-head .brand{color:var(--ink);justify-self:start;}
.menu-close{width:44px;height:44px;border:1px solid var(--line);background:transparent;border-radius:var(--r-sm);font-size:1.25rem;color:var(--ink);line-height:1;}
.mobile-nav{display:flex;flex-direction:column;}
.mobile-nav a{
  display:flex;align-items:baseline;gap:16px;
  padding:20px 4px;border-bottom:1px solid var(--line);
  font-family:var(--serif);font-size:1.5rem;color:var(--ink);
}
.mobile-nav a .idx{font-family:var(--sans);font-size:12px;letter-spacing:.14em;color:var(--gold-deep);}
.mobile-nav a:active{background:var(--paper-2);}
.mobile-menu-foot{margin-top:auto;padding-top:28px;display:grid;gap:14px;}
.mobile-menu-foot .btn{width:100%;}

/* ---------- hero ---------- */
.hero{
  position:relative;background:var(--ink);color:var(--paper);overflow:hidden;
  padding:168px 0 0;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  opacity:.32;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(12,21,18,.86) 0%,rgba(12,21,18,.72) 55%,rgba(12,21,18,.94) 100%);
}
.hero .wrap{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:64px;align-items:start;}
.hero h1{
  color:var(--paper);font-size:clamp(2.5rem,4.6vw,4rem);line-height:1.16;
  letter-spacing:-.015em;margin:18px 0 22px;max-width:14em;
}
.hero-sub{font-size:1.125rem;line-height:1.8;color:rgba(247,243,234,.78);max-width:30em;margin-bottom:32px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px;}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 12px;
  border:1px solid var(--line-dark);border-radius:var(--r-sm);
  font-size:12px;letter-spacing:.14em;color:rgba(247,243,234,.72);
}
.step-rail{border-left:1px solid var(--line-dark);padding-left:34px;margin-top:8px;}
.rail-label{font-size:12px;letter-spacing:.14em;color:var(--gold);margin-bottom:22px;}
.rail-item{display:grid;grid-template-columns:44px 1fr;gap:16px;padding:16px 0;border-bottom:1px solid var(--line-dark);}
.rail-item:last-child{border-bottom:0;}
.rail-num{font-family:var(--serif);font-size:1.125rem;color:var(--gold);letter-spacing:.06em;}
.rail-title{font-family:var(--serif);font-size:1.0625rem;color:var(--paper);margin-bottom:2px;}
.rail-desc{font-size:.875rem;line-height:1.7;color:rgba(247,243,234,.62);}
.hero-scroll{
  position:relative;z-index:2;margin-top:76px;border-top:1px solid var(--line-dark);
  padding:18px 0 22px;display:flex;justify-content:space-between;gap:20px;
  font-size:12px;letter-spacing:.14em;color:rgba(247,243,234,.55);
}

/* ---------- quick links ---------- */
.quick{background:var(--card);border-bottom:1px solid var(--line);}
.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.quick-grid a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:24px 26px;color:var(--text);font-weight:600;font-size:.9375rem;
  border-left:1px solid var(--line);transition:background .2s var(--ease),color .2s var(--ease);
}
.quick-grid a:first-child{border-left:0;padding-left:0;}
.quick-grid a:hover{background:var(--paper-2);color:var(--gold-deep);}
.quick-grid a .arrow{transition:transform .22s var(--ease);color:var(--gold-deep);}
.quick-grid a:hover .arrow{transform:translateX(4px);}

/* ---------- section base ---------- */
.section{padding:88px 0;}
.section-head{display:grid;grid-template-columns:4fr 8fr;gap:40px;align-items:end;margin-bottom:48px;}
.section-head h2{font-size:clamp(1.75rem,3vw,2.5rem);line-height:1.28;}
.section-head .head-note{color:#4A5651;max-width:44em;font-size:1rem;}
.section-head.between{align-items:center;grid-template-columns:8fr 4fr;}
.section-head.between .head-side{justify-self:end;text-align:right;}

/* ---------- merits ---------- */
.merit{
  display:grid;grid-template-columns:72px 1fr 200px;gap:28px;align-items:start;
  padding:30px 24px 30px 0;border-top:1px solid var(--line);
  transition:background .22s var(--ease);
}
.merit:last-child{border-bottom:1px solid var(--line);}
.merit:hover{background:var(--paper-2);}
.merit-num{font-family:var(--serif);font-size:2rem;color:var(--gold);line-height:1;letter-spacing:.04em;}
.merit h3{font-size:1.375rem;margin-bottom:8px;}
.merit p{margin:0;color:#4A5651;max-width:52em;}
.merit-side{font-size:.875rem;color:var(--mist);line-height:1.8;justify-self:end;text-align:right;}

/* ---------- scenes ---------- */
.scenes{background:var(--paper-2);}
.scene-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start;}
.scene-left{position:sticky;top:110px;}
.scene-left h2{font-size:clamp(1.75rem,3vw,2.5rem);line-height:1.28;margin:14px 0 18px;}
.scene-tabs{display:flex;gap:26px;border-bottom:1px solid var(--line);margin-bottom:28px;flex-wrap:wrap;}
.scene-tab{
  background:none;border:0;padding:12px 0;font-size:.9375rem;font-weight:600;
  color:#6A7772;position:relative;cursor:pointer;transition:color .2s var(--ease);
}
.scene-tab::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:transparent;transition:background .2s var(--ease);}
.scene-tab.is-active{color:var(--ink);}
.scene-tab.is-active::after{background:var(--gold);}
.scene-tab:hover{color:var(--gold-deep);}
.scene-panel{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:34px;display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:start;}
.scene-panel[hidden]{display:none;}
.scene-steps li{display:grid;grid-template-columns:28px 1fr;gap:12px;padding:14px 0;border-bottom:1px solid var(--line);font-size:.9375rem;color:#3A4642;line-height:1.8;}
.scene-steps li:last-child{border-bottom:0;}
.scene-steps .n{font-family:var(--serif);color:var(--gold-deep);font-size:.9375rem;}
.scene-figure{margin:0;}
.scene-figure img{width:100%;height:230px;object-fit:cover;border-radius:var(--r);border:1px solid var(--line);}
.scene-figure figcaption{font-size:13px;line-height:1.7;color:#6A7772;margin-top:10px;}

/* ---------- proof ---------- */
.dark-block{background:var(--ink-2);color:var(--paper);}
.dark-block h2{color:var(--paper);}
.proof-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start;}
.quote{font-family:var(--serif);font-size:clamp(1.5rem,2.4vw,2rem);line-height:1.6;color:var(--paper);max-width:16em;}
.quote-mark{font-family:var(--serif);font-size:3rem;line-height:1;color:var(--gold);display:block;margin-bottom:10px;}
.quote-src{margin-top:22px;font-size:13px;letter-spacing:.12em;color:rgba(247,243,234,.55);}
.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line-dark);}
.metric{padding:24px 22px 24px 0;border-right:1px solid var(--line-dark);}
.metric:last-child{border-right:0;padding-right:0;}
.metric-k{font-family:var(--serif);font-size:1.75rem;color:var(--gold);line-height:1.3;margin-bottom:6px;}
.metric-v{font-size:.875rem;line-height:1.7;color:rgba(247,243,234,.66);}
.partner-row{display:flex;flex-wrap:wrap;gap:14px 34px;margin-top:40px;padding-top:26px;border-top:1px solid var(--line-dark);}
.partner-row span{font-size:13px;letter-spacing:.12em;color:rgba(247,243,234,.5);}

/* ---------- news ---------- */
.news-list{border-top:1px solid var(--line);}
.news-item{
  display:grid;grid-template-columns:64px 1fr 48px;gap:26px;align-items:start;
  padding:28px 0;border-bottom:1px solid var(--line);
  transition:background .22s var(--ease);
}
.news-item:hover{background:var(--card);}
.news-index{font-family:var(--serif);font-size:1.375rem;color:var(--gold);letter-spacing:.06em;line-height:1.4;}
.news-meta{display:flex;align-items:center;gap:12px;margin-bottom:8px;flex-wrap:wrap;}
.badge-tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border:1px solid var(--line);border-radius:var(--r-sm);
  font-size:12px;letter-spacing:.08em;color:var(--mist);background:transparent;
}
.badge-tag.gold{color:var(--gold-deep);}
.news-meta time{font-size:13px;color:#7A8681;letter-spacing:.04em;}
.news-item h3{font-size:1.1875rem;line-height:1.5;margin-bottom:6px;}
.news-item h3 a{color:var(--ink);background-image:linear-gradient(var(--gold),var(--gold));background-size:0 1px;background-repeat:no-repeat;background-position:0 100%;transition:background-size .24s var(--ease),color .2s var(--ease);}
.news-item:hover h3 a{background-size:100% 1px;color:var(--gold-deep);}
.news-item p{margin:0;font-size:.9375rem;line-height:1.85;color:#55615C;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-arrow{justify-self:end;align-self:center;font-size:1.125rem;color:var(--gold-deep);transition:transform .22s var(--ease);}
.news-item:hover .news-arrow{transform:translateX(4px);}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r);padding:44px 28px;text-align:center;
  color:#5A6660;background:var(--card);
}
.empty-state .star{display:block;width:34px;height:34px;margin:0 auto 14px;color:var(--gold);}
.empty-state a{color:var(--gold-deep);text-decoration:underline;text-underline-offset:4px;}

/* ---------- faq ---------- */
.faq-section{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start;}
.faq-left{position:sticky;top:110px;}
.faq-left h2{font-size:clamp(1.75rem,3vw,2.5rem);line-height:1.28;margin:14px 0 16px;}
.faq-left p{color:#4A5651;font-size:.9375rem;}
.acc-item{border-top:1px solid var(--line);}
.acc-item:last-child{border-bottom:1px solid var(--line);}
.acc-btn{
  width:100%;display:block;position:relative;text-align:left;
  background:none;border:0;padding:24px 52px 24px 0;cursor:pointer;
  font-family:var(--serif);font-size:1.0625rem;line-height:1.6;color:var(--ink);
  transition:color .2s var(--ease);
}
.acc-btn:hover{color:var(--gold-deep);}
.acc-btn h3{font-size:1.0625rem;margin:0;line-height:1.6;color:inherit;font-family:inherit;}
.acc-btn::after{
  content:"+";position:absolute;right:10px;top:50%;transform:translateY(-50%);
  font-family:var(--sans);font-size:22px;font-weight:400;color:var(--gold-deep);
  transition:transform .24s var(--ease);
}
.acc-btn[aria-expanded="true"]::after{transform:translateY(-50%) rotate(45deg);}
.acc-body{padding:0 52px 26px 0;max-width:680px;color:#4A5651;font-size:.9375rem;line-height:1.9;}
.acc-body p:last-child{margin-bottom:0;}

/* ---------- cta ---------- */
.cta-band{background:var(--ink);color:var(--paper);padding:72px 0;}
.cta-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.cta-grid h2{color:var(--paper);font-size:clamp(1.625rem,2.6vw,2.25rem);line-height:1.35;margin-bottom:12px;}
.cta-grid p{color:rgba(247,243,234,.7);margin:0;font-size:.9375rem;max-width:34em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}

/* ---------- sticky bar ---------- */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:1030;
  background:var(--card);border-top:1px solid var(--line);
  box-shadow:0 -6px 24px rgba(12,21,18,.06);
}
.sticky-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px;}
.sticky-left{display:flex;align-items:baseline;gap:14px;min-width:0;}
.sticky-tag{font-size:12px;letter-spacing:.14em;color:var(--gold-deep);flex:none;}
.sticky-text{font-size:.875rem;color:#5A6660;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.sticky-right{display:flex;align-items:center;gap:18px;flex:none;}
.sticky-right .link-arrow{font-size:.875rem;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(247,243,234,.76);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:4fr 2.5fr 3fr 2.5fr;gap:44px;padding-bottom:52px;}
.footer-brand .brand{color:var(--paper);justify-self:start;margin-bottom:16px;}
.footer-brand p{font-size:.875rem;line-height:1.85;color:rgba(247,243,234,.6);max-width:26em;margin-bottom:16px;}
.status-line{display:inline-flex;align-items:center;gap:9px;font-size:12px;letter-spacing:.1em;color:rgba(247,243,234,.55);}
.status-dot{width:6px;height:6px;border-radius:50%;background:var(--mist);flex:none;}
.footer-col h4{font-size:13px;letter-spacing:.12em;color:rgba(247,243,234,.5);font-family:var(--sans);font-weight:600;margin-bottom:18px;}
.footer-col a,.footer-col li{display:block;font-size:.9375rem;color:rgba(247,243,234,.78);padding:6px 0;transition:color .2s var(--ease);}
.footer-col a:hover{color:var(--gold);}
.footer-col p{font-size:.875rem;line-height:1.85;color:rgba(247,243,234,.58);margin:0 0 10px;}
.footer-bottom{
  border-top:1px solid var(--line-dark);padding:22px 0 28px;
  display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:13px;color:rgba(247,243,234,.45);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- bootstrap overrides ---------- */
.navbar{--bs-navbar-padding-y:0;}
.navbar .nav-link{color:inherit;padding:0;}
.card{--bs-card-border-radius:var(--r);--bs-card-border-color:var(--line);background:var(--card);}
.accordion{--bs-accordion-border-color:var(--line);--bs-accordion-btn-focus-box-shadow:none;--bs-accordion-active-bg:transparent;--bs-accordion-active-color:var(--ink);}
.accordion-button{border-radius:0!important;background:transparent;box-shadow:none;font-family:var(--serif);}
.accordion-button:not(.collapsed){background:transparent;color:var(--ink);}
.accordion-body{padding:0 0 24px;font-size:.9375rem;line-height:1.9;color:#4A5651;}
.form-control,.form-select{
  height:48px;border-radius:var(--r-sm);border:1px solid var(--line);background:var(--card);
  color:var(--text);font-size:.9375rem;
}
.form-control:focus,.form-select:focus{border-color:var(--gold-deep);box-shadow:0 0 0 4px rgba(198,161,91,.18);background:var(--card);color:var(--text);}
.badge{border-radius:var(--r-sm);font-weight:500;}
.breadcrumb{font-size:13px;--bs-breadcrumb-divider:'/';background:transparent;padding:0;margin:0;}
.breadcrumb a{color:#6A7772;}
.breadcrumb-item.active{color:var(--text);}
.collapse{visibility:visible;}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .wrap{padding:0 32px;}
  .hero-grid{gap:48px;}
  .scene-grid,.proof-grid,.faq-grid{gap:40px;}
}
@media (max-width:991px){
  body{padding-bottom:72px;}
  .nav-side,.nav-cta{display:none;}
  .header-inner{grid-template-columns:44px 1fr 44px;height:64px;}
  .menu-toggle{display:block;order:3;}
  .brand{order:2;justify-self:center;}
  .header-inner::before{content:"";order:1;width:44px;}
  .brand-name{font-size:1rem;letter-spacing:.08em;}
  .hero{padding-top:120px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero h1{max-width:none;}
  .step-rail{border-left:0;padding-left:0;border-top:1px solid var(--line-dark);padding-top:20px;margin-top:0;}
  .rail-label{margin-bottom:14px;}
  .hero-scroll{margin-top:48px;}
  .quick-grid{grid-template-columns:repeat(2,1fr);}
  .quick-grid a{border-left:0;padding:20px 16px;}
  .quick-grid a:nth-child(odd){padding-left:0;}
  .quick-grid a:nth-child(even){border-left:1px solid var(--line);}
  .quick-grid a:nth-child(n+3){border-top:1px solid var(--line);}
  .section{padding:64px 0;}
  .section-head,.section-head.between{grid-template-columns:1fr;gap:18px;align-items:start;margin-bottom:34px;}
  .section-head.between .head-side{justify-self:start;text-align:left;}
  .merit{grid-template-columns:56px 1fr;gap:18px;padding-right:0;}
  .merit-side{grid-column:2;justify-self:start;text-align:left;}
  .scene-grid,.proof-grid,.faq-grid{grid-template-columns:1fr;gap:32px;}
  .scene-left,.faq-left{position:static;}
  .scene-tabs{overflow-x:auto;flex-wrap:nowrap;gap:20px;}
  .scene-tab{white-space:nowrap;}
  .scene-panel{grid-template-columns:1fr;padding:26px;}
  .metrics{grid-template-columns:1fr;border-top:1px solid var(--line-dark);}
  .metric{border-right:0;border-bottom:1px solid var(--line-dark);padding:18px 0;}
  .metric:last-child{border-bottom:0;}
  .cta-grid{grid-template-columns:1fr;gap:26px;}
  .cta-actions{justify-content:flex-start;}
  .sticky-text{display:none;}
  .sticky-inner{height:64px;gap:16px;}
  .sticky-right{gap:12px;flex:1;justify-content:flex-end;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .news-item{grid-template-columns:48px 1fr;gap:18px;}
  .news-arrow{display:none;}
}
@media (max-width:767px){
  .wrap{padding:0 22px;}
  .hero{padding-top:104px;}
  .hero h1{font-size:clamp(1.9rem,7vw,2.6rem);}
  .hero-sub{font-size:1rem;}
  .hero-actions .btn{flex:1 1 100%;}
  .section{padding:52px 0;}
  .merit{grid-template-columns:1fr;gap:10px;}
  .merit-side{grid-column:1;}
  .news-item{grid-template-columns:1fr;gap:12px;}
  .news-index{font-size:1rem;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .sticky-right .link-arrow{display:none;}
  .sticky-right .btn{width:100%;}
  .sticky-inner{gap:10px;}
  .hero-scroll{font-size:11px;letter-spacing:.1em;margin-top:36px;padding-bottom:18px;}
}
@media (max-width:575px){
  .wrap{padding:0 18px;}
  body{padding-bottom:76px;}
  .quick-grid{grid-template-columns:1fr;}
  .quick-grid a{border-left:0!important;padding:16px 0;border-bottom:1px solid var(--line);}
  .quick-grid a:last-child{border-bottom:0;}
  .quick-grid a:nth-child(n+3){border-top:0;}
  .scene-panel{padding:20px;}
  .acc-btn{padding-right:38px;font-size:1rem;}
  .acc-btn::after{right:2px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .btn{height:46px;letter-spacing:.06em;}
  .sticky-tag{display:none;}
  .sticky-inner{justify-content:center;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{transition-duration:.001ms!important;animation-duration:.001ms!important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: article */
:root{
  --ink:#0C1512;
  --ink-deep:#17231F;
  --text:#1E2A26;
  --gold:#C6A15B;
  --gold-deep:#9E7B3F;
  --paper:#F7F3EA;
  --paper-2:#EDE6D8;
  --card:#FFFDF8;
  --mist:#6E8F84;
  --line:#D8D0C0;
  --line-dark:rgba(247,243,234,.16);
  --warn:#A65D4E;
  --serif:"Noto Serif CJK SC","Source Han Serif SC","Songti SC",STSong,serif;
  --sans:"Noto Sans CJK SC","PingFang SC","Microsoft YaHei",sans-serif;
  --r-sm:2px;
  --r-md:4px;
  --shadow:0 12px 40px rgba(12,21,18,.08);
  --ease:cubic-bezier(.2,.7,.2,1);
  --wrap:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--gold-deep);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--ink);}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;color:var(--ink);margin:0;letter-spacing:-.01em;}
p{margin:0 0 1.1em;}
ul,ol{margin:0 0 1.1em;padding-left:1.3em;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 40px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ===== buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;height:48px;padding:0 26px;border-radius:var(--r-sm);border:1px solid transparent;font-size:14px;letter-spacing:.08em;font-weight:500;line-height:1;cursor:pointer;transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);text-decoration:none;}
.btn .arw{display:inline-block;transition:transform .22s var(--ease);}
.btn:hover .arw{transform:translateX(4px);}
.btn-gold{background:var(--gold);color:var(--ink);border-color:var(--gold);}
.btn-gold:hover,.btn-gold:focus{background:var(--ink);color:var(--paper);border-color:var(--gold);}
.btn-ink{background:var(--ink);color:var(--paper);border-color:var(--ink);}
.btn-ink:hover,.btn-ink:focus{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover,.btn-ghost:focus{background:var(--ink);color:var(--paper);border-color:var(--ink);}
.btn:active{transform:translateY(1px);}
.btn[disabled],.btn.disabled{opacity:.45;pointer-events:none;}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;letter-spacing:.04em;color:var(--gold-deep);border-bottom:1px solid transparent;padding-bottom:2px;transition:border-color .2s var(--ease),color .2s var(--ease);}
.link-arrow:hover{color:var(--ink);border-bottom-color:var(--gold);}
.link-arrow .arw{transition:transform .22s var(--ease);}
.link-arrow:hover .arw{transform:translateX(4px);}

/* ===== header ===== */
.site-header{position:sticky;top:0;z-index:1030;background:var(--paper);border-bottom:1px solid var(--line);transition:box-shadow .24s var(--ease),background .24s var(--ease);}
.site-header.is-solid{box-shadow:var(--shadow);}
.nav-grid{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px;height:76px;}
.nav-side{display:flex;align-items:center;gap:30px;}
.nav-left{justify-content:flex-start;}
.nav-right{display:flex;align-items:center;justify-content:flex-end;gap:22px;}
.nav-side a{position:relative;font-size:15px;color:var(--text);padding:4px 0;letter-spacing:.02em;text-decoration:none;}
.nav-side a::after{content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;background:var(--gold);transition:width .22s var(--ease);}
.nav-side a:hover::after{width:100%;}
.nav-side a.is-active{color:var(--gold-deep);}
.nav-side a.is-active::before{content:"";position:absolute;left:-13px;top:50%;width:6px;height:6px;border-radius:50%;background:var(--gold);transform:translateY(-50%);}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);}
.brand-mark{width:13px;height:13px;border:1px solid var(--gold);transform:rotate(45deg);position:relative;flex:0 0 auto;}
.brand-mark::after{content:"";position:absolute;inset:3px;background:var(--gold);}
.brand-name{font-family:var(--serif);font-weight:600;font-size:19px;letter-spacing:.05em;white-space:nowrap;}
.nav-cta{height:42px;padding:0 20px;font-size:13px;}
.menu-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-sm);background:transparent;align-items:center;justify-content:center;cursor:pointer;padding:0;}
.menu-toggle span{display:block;width:18px;height:1px;background:var(--ink);position:relative;}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:18px;height:1px;background:var(--ink);}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}

.mobile-panel{position:fixed;inset:0;z-index:1060;background:var(--paper);transform:translateY(-102%);transition:transform .32s var(--ease);display:flex;flex-direction:column;padding:22px 22px 30px;visibility:hidden;}
.mobile-panel.is-open{transform:translateY(0);visibility:visible;}
.mp-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line);}
.mp-close{width:42px;height:42px;border:1px solid var(--line);background:transparent;border-radius:var(--r-sm);font-size:20px;line-height:1;color:var(--ink);cursor:pointer;}
.mp-links{display:flex;flex-direction:column;gap:2px;margin-top:22px;}
.mp-links a{display:flex;align-items:baseline;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);font-family:var(--serif);font-size:22px;color:var(--ink);text-decoration:none;}
.mp-links a i{font-style:normal;font-family:var(--sans);font-size:12px;letter-spacing:.14em;color:var(--gold-deep);}
.mp-links a:active,.mp-links a:hover{color:var(--gold-deep);}
.mp-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;padding-top:24px;}
.mp-foot .btn{width:100%;}

/* ===== article head ===== */
.article-head{background:var(--card);border-bottom:1px solid var(--line);padding:44px 0 0;}
.article-head .head-inner{max-width:900px;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:#6b7570;margin-bottom:26px;}
.crumb a{color:#6b7570;text-decoration:none;}
.crumb a:hover{color:var(--gold-deep);}
.crumb .sep{color:var(--line);}
.crumb .cur{color:var(--text);}
.badge-tag{display:inline-flex;align-items:center;gap:8px;height:26px;padding:0 12px;border:1px solid var(--line);border-radius:var(--r-sm);background:var(--paper-2);font-size:12px;letter-spacing:.14em;color:var(--mist);margin-bottom:20px;}
.badge-tag.gold{color:var(--gold-deep);background:transparent;border-color:rgba(198,161,91,.55);}
.article-head h1{font-size:clamp(1.9rem,3.6vw,2.9rem);line-height:1.22;margin-bottom:22px;}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:13.5px;color:#6b7570;}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--line);display:inline-block;}
.lede{font-size:19px;line-height:1.8;color:#3b4843;margin:24px 0 30px;max-width:820px;}
.head-rule{height:1px;background:var(--line);}

/* ===== article main ===== */
.article-main{padding:56px 0 88px;}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;align-items:start;}
.article-body{max-width:760px;font-size:17px;line-height:1.95;color:var(--text);overflow-wrap:break-word;}
.article-body h2{font-size:30px;line-height:1.35;margin:52px 0 18px;padding-left:16px;position:relative;scroll-margin-top:100px;}
.article-body h2::before{content:"";position:absolute;left:0;top:.35em;width:2px;height:1.05em;background:var(--gold);}
.article-body h3{font-size:22px;line-height:1.45;margin:34px 0 12px;color:var(--ink-deep);}
.article-body h4{font-size:18px;margin:26px 0 10px;color:var(--ink-deep);}
.article-body p{margin:0 0 1.1em;}
.article-body a{color:var(--gold-deep);border-bottom:1px solid rgba(158,123,63,.4);}
.article-body a:hover{color:var(--ink);border-bottom-color:var(--gold);}
.article-body ul,.article-body ol{padding-left:1.35em;line-height:1.85;}
.article-body li{margin-bottom:.45em;}
.article-body blockquote{margin:28px 0;padding:20px 24px;border-left:2px solid var(--gold);background:var(--paper-2);border-radius:0 var(--r-md) var(--r-md) 0;color:#3b4843;font-size:16.5px;}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-md);margin:26px 0 10px;width:100%;}
.article-body figure{margin:26px 0;}
.article-body figcaption{font-size:13px;color:#6b7570;line-height:1.7;margin-top:8px;}
.article-body table{display:block;width:100%;max-width:100%;overflow-x:auto;border-collapse:collapse;font-size:15px;margin:24px 0;}
.article-body th,.article-body td{border-bottom:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top;white-space:nowrap;}
.article-body th{background:var(--paper-2);font-weight:600;color:var(--ink);}
.article-body code{background:var(--paper-2);padding:2px 6px;border-radius:var(--r-sm);font-size:.92em;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:40px 0;}

.article-empty{max-width:760px;border:1px dashed var(--line);border-radius:var(--r-md);background:var(--card);padding:48px 32px;text-align:left;}
.article-empty h2{font-size:24px;margin-bottom:12px;}
.article-empty p{color:#5c6862;margin-bottom:24px;}

/* ===== sidebar ===== */
.article-side{position:sticky;top:104px;display:flex;flex-direction:column;gap:22px;}
.side-box{background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);padding:22px 20px;}
.side-box h2,.side-box h3{font-size:14px;letter-spacing:.14em;color:var(--gold-deep);font-family:var(--sans);font-weight:600;margin-bottom:14px;text-transform:none;}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-link{display:block;font-size:14px;line-height:1.6;color:#4a5651;padding:7px 0 7px 12px;border-left:1px solid var(--line);transition:color .2s var(--ease),border-color .2s var(--ease);}
.toc-link:hover{color:var(--ink);border-left-color:var(--gold);}
.side-links{display:flex;flex-direction:column;gap:2px;}
.side-links a{font-size:14px;color:var(--text);padding:8px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:10px;}
.side-links a:last-child{border-bottom:0;}
.side-links a:hover{color:var(--gold-deep);}
.side-links a .arw{color:var(--gold);transition:transform .2s var(--ease);}
.side-links a:hover .arw{transform:translateX(3px);}
.side-figure{margin:0;}
.side-figure img{border-radius:var(--r-md);width:100%;height:auto;}
.side-figure figcaption{font-size:12.5px;color:#6b7570;line-height:1.7;margin-top:10px;}

/* ===== related + inline cta ===== */
.related{margin-top:64px;padding-top:36px;border-top:1px solid var(--line);max-width:760px;}
.sec-title-sm{font-size:24px;margin-bottom:8px;}
.related > p.related-sub{font-size:14px;color:#6b7570;margin:8px 0 22px;}
.related-empty{border:1px dashed var(--line);border-radius:var(--r-md);padding:22px 20px;background:var(--card);font-size:14.5px;color:#5c6862;margin-bottom:18px;}
.inline-cta{margin-top:64px;max-width:760px;background:var(--ink);color:var(--paper);border-radius:var(--r-md);padding:44px 40px;position:relative;overflow:hidden;}
.inline-cta::after{content:"";position:absolute;inset:0;background-image:url(/assets/images/backpic/back-2.png);background-size:cover;background-position:center;opacity:.16;pointer-events:none;}
.inline-cta > *{position:relative;z-index:1;}
.inline-cta h2{color:var(--paper);font-size:clamp(1.5rem,2.4vw,2rem);line-height:1.35;margin-bottom:14px;}
.inline-cta p{color:rgba(247,243,234,.78);font-size:15px;max-width:460px;margin-bottom:26px;}
.inline-cta .cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px;}
.inline-cta .link-arrow{color:var(--gold);}
.inline-cta .link-arrow:hover{color:var(--paper);border-bottom-color:var(--gold);}
.inline-cta .btn-gold:hover{background:var(--paper);color:var(--ink);border-color:var(--gold);}

/* ===== footer ===== */
.site-footer{background:var(--ink);color:var(--paper);padding:70px 0 0;margin-top:20px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.2fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand .brand{color:var(--paper);margin-bottom:18px;}
.footer-brand .brand-mark{border-color:var(--gold);}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(247,243,234,.68);margin-bottom:18px;max-width:320px;}
.status-line{display:inline-flex;align-items:center;gap:9px;font-size:12.5px;letter-spacing:.06em;color:rgba(247,243,234,.72);border:1px solid var(--line-dark);border-radius:var(--r-sm);padding:7px 12px;}
.status-dot{width:6px;height:6px;border-radius:50%;background:var(--gold);flex:0 0 auto;}
.footer-col h4{font-family:var(--sans);font-size:13px;letter-spacing:.12em;font-weight:600;color:var(--gold);margin-bottom:18px;}
.footer-col a{display:block;font-size:14px;color:rgba(247,243,234,.72);padding:6px 0;text-decoration:none;transition:color .2s var(--ease);}
.footer-col a:hover{color:var(--gold);}
.footer-col p{font-size:13.5px;line-height:1.85;color:rgba(247,243,234,.62);margin-bottom:12px;}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;border-top:1px solid var(--line-dark);padding:22px 0 26px;font-size:13px;color:rgba(247,243,234,.55);}

/* ===== responsive ===== */
@media (max-width:1199.98px){
  .wrap{padding:0 30px;}
  .article-grid{gap:40px;grid-template-columns:minmax(0,1fr) 280px;}
  .nav-side{gap:22px;}
}
@media (max-width:991.98px){
  .wrap{padding:0 28px;}
  .nav-grid{height:66px;gap:12px;}
  .nav-side,.nav-cta{display:none;}
  .menu-toggle{display:inline-flex;}
  .nav-left,.nav-right{display:none;}
  .nav-grid{grid-template-columns:1fr auto 1fr;}
  .article-head{padding-top:32px;}
  .article-main{padding:40px 0 64px;}
  .article-grid{grid-template-columns:minmax(0,1fr);gap:36px;}
  .article-side{position:static;order:2;}
  .article-body{max-width:none;}
  .related,.inline-cta{max-width:none;}
  .inline-cta{padding:34px 26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767.98px){
  .wrap{padding:0 20px;}
  .article-head h1{font-size:1.75rem;}
  .lede{font-size:16.5px;}
  .article-body{font-size:16.5px;line-height:1.9;}
  .article-body h2{font-size:24px;margin-top:42px;}
  .article-body h3{font-size:19px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .site-footer{padding-top:52px;}
}
@media (max-width:575.98px){
  .wrap{padding:0 18px;}
  .brand-name{font-size:16px;}
  .meta-row{font-size:12.5px;gap:8px 14px;}
  .btn{height:46px;padding:0 20px;}
  .inline-cta{padding:28px 20px;}
  .inline-cta .cta-actions .btn{width:100%;}
  .article-head{padding-top:26px;}
  .side-box{padding:18px 16px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --ink:#0C1512;
  --ink-2:#17231F;
  --body-ink:#1E2A26;
  --gold:#C6A15B;
  --gold-deep:#9E7B3F;
  --paper:#F7F3EA;
  --paper-2:#EDE6D8;
  --card:#FFFDF8;
  --mist:#6E8F84;
  --line:#D8D0C0;
  --line-dark:rgba(247,243,234,.16);
  --clay:#A65D4E;
  --serif:"Noto Serif CJK SC","Source Han Serif SC","Songti SC",STSong,serif;
  --sans:"Noto Sans CJK SC","PingFang SC","Microsoft YaHei",sans-serif;
  --r-sm:2px;
  --r-md:4px;
  --shadow:0 12px 40px rgba(12,21,18,.08);
  --ease:cubic-bezier(.2,.7,.2,1);
  --wrap:1240px;
  --sec:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.9;
  color:var(--body-ink);
  background:var(--paper);
  padding-bottom:88px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;color:var(--ink);margin:0;letter-spacing:-.01em}
p{margin:0 0 1.1em}
ul,ol{margin:0;padding:0;list-style:none}
a{color:var(--gold-deep);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--ink)}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:var(--r-sm)}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 40px}
.section{padding:var(--sec) 0}
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--mist);
  margin-bottom:18px;
  text-transform:uppercase;
}
.sec-head{display:grid;grid-template-columns:4fr 8fr;gap:40px;align-items:end;margin-bottom:52px}
.sec-head h2{font-size:clamp(1.75rem,3vw,2.75rem);line-height:1.25}
.sec-head p{color:#4A554F;margin:0;max-width:640px}
.rule{height:1px;background:var(--line);border:0;margin:0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  height:48px;
  padding:0 28px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  font-size:.95rem;
  letter-spacing:.08em;
  cursor:pointer;
  transition:background .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(4px)}
.btn-gold{background:var(--gold);color:var(--ink);border-color:var(--gold)}
.btn-gold:hover{background:var(--ink);color:var(--gold);border-color:var(--gold)}
.btn-gold:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--body-ink);border-color:var(--line)}
.btn-ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn-ghost:active{transform:translateY(1px)}
.btn-ghost-light{background:transparent;color:var(--paper);border-color:var(--line-dark)}
.btn-ghost-light:hover{background:var(--paper);color:var(--ink);border-color:var(--paper)}
.btn[disabled],.btn.disabled{opacity:.45;pointer-events:none}
.link-more{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.94rem;letter-spacing:.04em;color:var(--gold-deep);
  position:relative;
}
.link-more::after{
  content:"";position:absolute;left:0;right:18px;bottom:-4px;height:1px;
  background:currentColor;transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.link-more:hover::after{transform:scaleX(1)}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--paper);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:24px;
  height:76px;
}
.nav-side{display:flex;align-items:center;gap:30px;font-size:.94rem}
.nav-side a{
  color:var(--body-ink);
  position:relative;
  padding:6px 0;
  font-weight:500;
}
.nav-side a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--gold);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-side a:hover::after,.nav-side a:focus-visible::after{transform:scaleX(1)}
.nav-side a.active{color:var(--ink)}
.nav-side a.active::before{
  content:"";position:absolute;left:50%;bottom:-13px;width:6px;height:6px;
  margin-left:-3px;border-radius:50%;background:var(--gold);
}
.nav-right{justify-content:flex-end}
.nav-cta{height:40px;padding:0 20px;font-size:.86rem}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--serif);font-size:1.06rem;color:var(--ink);
  letter-spacing:.02em;white-space:nowrap;
}
.brand-mark{
  width:9px;height:9px;background:var(--gold);
  transform:rotate(45deg);flex:none;
}
.menu-toggle{
  display:none;align-items:center;gap:10px;
  background:transparent;border:1px solid var(--line);border-radius:var(--r-sm);
  height:40px;padding:0 14px;font-size:.85rem;color:var(--body-ink);
  cursor:pointer;transition:border-color .2s var(--ease),color .2s var(--ease);
}
.menu-toggle:hover{border-color:var(--gold-deep);color:var(--gold-deep)}
.menu-toggle span{display:block;width:16px;height:1px;background:currentColor;position:relative}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:1px;background:currentColor;
}
.menu-toggle span::before{top:-5px}
.menu-toggle span::after{top:5px}

/* ---------- 抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:2000;
  background:var(--paper);
  display:flex;flex-direction:column;
  padding:22px 20px 26px;
  transform:translateY(-100%);visibility:hidden;
  transition:transform .34s var(--ease),visibility .34s var(--ease);
}
.drawer.open{transform:none;visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:20px;border-bottom:1px solid var(--line)}
.drawer-close{
  background:transparent;border:1px solid var(--line);border-radius:var(--r-sm);
  height:38px;padding:0 14px;font-size:.85rem;color:var(--body-ink);cursor:pointer;
}
.drawer-nav{padding:26px 0;flex:1;overflow:auto}
.drawer-nav a{
  display:flex;align-items:baseline;gap:14px;
  font-family:var(--serif);font-size:1.45rem;color:var(--ink);
  padding:16px 0;border-bottom:1px solid var(--line);
}
.drawer-nav a .num{font-size:.78rem;letter-spacing:.14em;color:var(--gold-deep);font-family:var(--sans)}
.drawer-nav a.active{color:var(--gold-deep)}
.drawer-foot{display:grid;gap:12px}
.drawer-foot .btn{width:100%}
body.no-scroll{overflow:hidden}

/* ---------- 面包屑 ---------- */
.crumb{font-size:13px;color:#7A837D;margin-bottom:34px;display:flex;flex-wrap:wrap;gap:8px}
.crumb a{color:#7A837D}
.crumb a:hover{color:var(--gold-deep)}
.crumb .sep{color:var(--line)}
.crumb .cur{color:var(--body-ink)}

/* ---------- Hero ---------- */
.hero-guide{
  position:relative;
  background:var(--card);
  border-bottom:1px solid var(--line);
  padding:76px 0 84px;
  overflow:hidden;
}
.hero-guide::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(circle at 78% 18%, rgba(198,161,91,.16) 0 1px, transparent 1.5px),
    radial-gradient(circle at 88% 44%, rgba(12,21,18,.10) 0 1px, transparent 1.5px),
    radial-gradient(circle at 68% 62%, rgba(110,143,132,.18) 0 1px, transparent 1.5px);
  background-size:340px 340px,420px 420px,300px 300px;
  opacity:.7;
}
.hero-guide-grid{
  position:relative;
  display:grid;grid-template-columns:7fr 5fr;gap:60px;align-items:start;
}
.hero-guide h1{
  font-size:clamp(2.3rem,4.4vw,3.7rem);
  line-height:1.14;
  margin-bottom:26px;
}
.hero-guide .lead{
  font-size:1.16rem;line-height:1.8;color:#414C46;
  max-width:560px;margin-bottom:34px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.quick-check{
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:30px 30px 24px;
  background:rgba(247,243,234,.6);
}
.quick-check h2{
  font-size:1.24rem;margin-bottom:6px;
}
.quick-check .qc-sub{font-size:.86rem;color:#6E7A73;margin-bottom:20px}
.quick-list li{
  display:grid;grid-template-columns:24px 1fr;gap:12px;
  padding:14px 0;border-top:1px solid var(--line);
  font-size:.95rem;line-height:1.7;
}
.quick-list li:first-child{border-top:0;padding-top:0}
.quick-list .idx{
  font-size:.74rem;letter-spacing:.1em;color:var(--gold-deep);
  padding-top:4px;
}

/* ---------- 核对清单 ---------- */
.grid-4-8{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.sticky-title{position:sticky;top:112px}
.sticky-title h2{font-size:clamp(1.6rem,2.6vw,2.3rem);line-height:1.3;margin-bottom:18px}
.sticky-title p{font-size:.95rem;color:#5A655F;max-width:300px}
.check-groups{display:grid;gap:44px}
.check-group h3{
  font-size:1.22rem;margin-bottom:18px;padding-bottom:14px;
  border-bottom:1px solid var(--line);
  display:flex;align-items:center;gap:10px;
}
.check-group h3 .tag{
  font-family:var(--sans);font-size:11px;letter-spacing:.14em;
  color:var(--mist);border:1px solid var(--line);border-radius:var(--r-sm);
  padding:2px 8px;
}
.checklist li{
  display:grid;grid-template-columns:20px 1fr;gap:14px;
  padding:13px 0;font-size:.98rem;line-height:1.75;
  border-bottom:1px dashed rgba(216,208,192,.7);
}
.checklist li::before{
  content:"";width:14px;height:14px;margin-top:7px;
  border:1px solid var(--line);border-radius:1px;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.checklist li:hover::before{border-color:var(--gold-deep);background:rgba(198,161,91,.18)}
.checklist li:last-child{border-bottom:0}

/* ---------- 访问路径 ---------- */
.path-section{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.timeline{display:grid;gap:0;margin-bottom:56px}
.timeline li{
  display:grid;grid-template-columns:120px 1fr;gap:36px;
  padding:34px 0;border-top:1px solid var(--line);
  transition:background .22s var(--ease);
}
.timeline li:last-child{border-bottom:1px solid var(--line)}
.timeline li:hover{background:rgba(255,253,248,.7)}
.tl-num{
  font-family:var(--serif);font-size:2.6rem;line-height:1;
  color:var(--gold-deep);letter-spacing:.02em;
}
.tl-body h3{font-size:1.28rem;margin-bottom:10px}
.tl-body p{font-size:.98rem;color:#4A554F;max-width:720px;margin:0}
.wide-figure{margin:0}
.wide-figure img{
  width:100%;aspect-ratio:21/9;object-fit:cover;
  border:1px solid var(--line);border-radius:var(--r-md);
}
.wide-figure figcaption{
  font-size:13px;color:#6E7A73;margin-top:14px;
  padding-left:14px;border-left:2px solid var(--gold);
}

/* ---------- 对照表 ---------- */
.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-md);background:var(--card)}
table.alert-table{width:100%;border-collapse:collapse;min-width:640px}
table.alert-table caption{caption-side:top;text-align:left;padding:16px 20px;font-size:13px;color:#6E7A73;border-bottom:1px solid var(--line)}
table.alert-table th,table.alert-table td{
  padding:18px 22px;text-align:left;font-size:.96rem;line-height:1.7;
  border-bottom:1px solid var(--line);vertical-align:top;
}
table.alert-table th{
  background:var(--paper-2);font-family:var(--serif);font-weight:600;
  color:var(--ink);font-size:.98rem;letter-spacing:.02em;
}
table.alert-table tr:last-child td{border-bottom:0}
table.alert-table tbody tr:hover td{background:rgba(247,243,234,.8)}
table.alert-table td:first-child{color:var(--ink);width:42%}
table.alert-table td:last-child{color:#4A554F}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.faq-aside{position:sticky;top:112px}
.faq-aside h2{font-size:clamp(1.6rem,2.6vw,2.3rem);line-height:1.3;margin-bottom:16px}
.faq-aside p{font-size:.95rem;color:#5A655F;max-width:300px;margin-bottom:22px}
.acc .accordion-item{
  background:transparent;border:0;border-top:1px solid var(--line);border-radius:0;
}
.acc .accordion-item:last-child{border-bottom:1px solid var(--line)}
.acc .accordion-button{
  position:relative;
  background:transparent;color:var(--ink);
  font-family:var(--serif);font-size:1.12rem;font-weight:600;line-height:1.5;
  padding:22px 48px 22px 0;border-radius:0;box-shadow:none;
  transition:color .2s var(--ease);
}
.acc .accordion-button:not(.collapsed){background:transparent;color:var(--gold-deep);box-shadow:none}
.acc .accordion-button:focus{box-shadow:none;outline:2px solid var(--gold);outline-offset:-2px}
.acc .accordion-button::after{
  content:"";position:absolute;right:8px;top:50%;
  width:13px;height:1px;background:var(--gold-deep);
  background-image:none;transform:translateY(-50%);
  transition:transform .22s var(--ease);
}
.acc .accordion-button::before{
  content:"";position:absolute;right:14px;top:50%;
  width:1px;height:13px;background:var(--gold-deep);
  transform:translateY(-50%);
  transition:opacity .22s var(--ease),transform .22s var(--ease);
}
.acc .accordion-button:not(.collapsed)::before{opacity:0;transform:translateY(-50%) rotate(90deg)}
.acc .accordion-body{
  padding:0 48px 26px 0;font-size:.98rem;line-height:1.9;color:#4A554F;max-width:680px;
}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink);color:var(--paper);
  padding:72px 0;
}
.cta-inner{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.cta-band h2{
  color:var(--paper);font-size:clamp(1.7rem,2.8vw,2.4rem);line-height:1.3;margin-bottom:14px;
}
.cta-band p{color:rgba(247,243,234,.76);margin:0;max-width:560px;font-size:.98rem}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(247,243,234,.8);padding:76px 0 30px;font-size:.93rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.2fr 1.2fr;gap:44px;padding-bottom:52px;border-bottom:1px solid var(--line-dark)}
.site-footer .brand{color:var(--paper);margin-bottom:16px}
.site-footer .brand:hover{color:var(--gold)}
.footer-brand p{color:rgba(247,243,234,.68);max-width:300px;line-height:1.85}
.status-line{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:rgba(247,243,234,.6)}
.status-dot{width:6px;height:6px;border-radius:50%;background:var(--gold);flex:none}
.footer-col h4{
  color:var(--paper);font-family:var(--sans);font-size:13px;letter-spacing:.12em;
  font-weight:600;margin-bottom:18px;
}
.footer-col a{display:block;color:rgba(247,243,234,.75);padding:6px 0;transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--gold)}
.footer-col p{color:rgba(247,243,234,.62);line-height:1.85;font-size:.9rem;max-width:280px}
.footer-bottom{
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  padding-top:26px;font-size:12.5px;color:rgba(247,243,234,.5);
}

/* ---------- 固定转化条 ---------- */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:1050;
  background:var(--card);border-top:1px solid var(--line);
  box-shadow:0 -6px 24px rgba(12,21,18,.06);
}
.sticky-cta .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.sc-left{display:flex;align-items:center;gap:14px;min-width:0}
.sc-tag{
  font-size:11px;letter-spacing:.14em;color:var(--mist);
  border:1px solid var(--line);border-radius:var(--r-sm);padding:3px 9px;white-space:nowrap;
}
.sc-note{font-size:.9rem;color:#5A655F;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sc-right{display:flex;align-items:center;gap:18px;flex:none}
.sc-right .btn{height:42px;padding:0 22px;font-size:.9rem}
.sc-link{font-size:.9rem;color:var(--gold-deep);white-space:nowrap}
.sc-link:hover{color:var(--ink)}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(14px);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}
  .reveal{opacity:1;transform:none}
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .wrap{padding:0 28px}
  .hero-guide-grid{gap:40px}
}
@media (max-width:991.98px){
  :root{--sec:64px}
  .wrap{padding:0 28px}
  .nav-side{display:none}
  .header-inner{grid-template-columns:1fr auto 1fr;height:64px}
  .brand{grid-column:2;justify-self:center;font-size:1rem}
  .menu-toggle{display:inline-flex;grid-column:3;justify-self:end}
  .hero-guide{padding:52px 0 60px}
  .hero-guide-grid{grid-template-columns:1fr;gap:36px}
  .quick-check{padding:24px}
  .grid-4-8,.faq-layout,.sec-head,.cta-inner{grid-template-columns:1fr;gap:32px}
  .sticky-title,.faq-aside{position:static}
  .sticky-title p,.faq-aside p{max-width:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .cta-actions{justify-content:flex-start}
  .timeline li{grid-template-columns:80px 1fr;gap:24px}
  .tl-num{font-size:2.1rem}
  .sc-note{display:none}
}
@media (max-width:767.98px){
  :root{--sec:52px}
  .wrap{padding:0 20px}
  .hero-guide h1{font-size:clamp(1.9rem,6.4vw,2.5rem)}
  .hero-guide .lead{font-size:1.04rem}
  .btn{height:46px;padding:0 22px;font-size:.9rem}
  .hero-actions .btn{flex:1 1 100%}
  .timeline li{grid-template-columns:1fr;gap:10px;padding:26px 0}
  .tl-num{font-size:1.6rem}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;gap:8px}
  .sticky-cta .wrap{height:58px;gap:10px}
  .sc-left{display:none}
  .sc-right{width:100%;gap:10px}
  .sc-right .btn{flex:1 1 50%;min-width:0}
  .sc-link{flex:1 1 50%;text-align:center;border:1px solid var(--line);border-radius:var(--r-sm);height:38px;line-height:36px}
  body{padding-bottom:74px}
  table.alert-table{min-width:560px}
}
@media (max-width:519.98px){
  .wrap{padding:0 18px}
  .brand-name{font-size:.92rem}
  .crumb{font-size:12px;margin-bottom:24px}
  .acc .accordion-button{font-size:1.02rem;padding:18px 42px 18px 0}
  .acc .accordion-body{padding:0 0 22px}
  .sc-right .btn{font-size:.84rem;padding:0 12px}
  .sc-link{font-size:.84rem}
}

/* roulang page: category3 */
:root{
  --ink:#0C1512;
  --ink-2:#17231F;
  --text:#1E2A26;
  --gold:#C6A15B;
  --gold-deep:#9E7B3F;
  --paper:#F7F3EA;
  --paper-2:#EDE6D8;
  --card:#FFFDF8;
  --teal:#6E8F84;
  --warn:#A65D4E;
  --line:#D8D0C0;
  --line-dark:rgba(247,243,234,.16);
  --muted:#5F6B66;
  --serif:"Noto Serif CJK SC","Source Han Serif SC","Songti SC",STSong,serif;
  --sans:"Noto Sans CJK SC","PingFang SC","Microsoft YaHei",sans-serif;
  --r-sm:2px;
  --r-md:4px;
  --shadow:0 12px 40px rgba(12,21,18,.08);
  --t:200ms cubic-bezier(.2,.7,.2,1);
  --max:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--paper);
  padding-bottom:80px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--gold-deep);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--ink);}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;color:var(--ink);letter-spacing:-.01em;margin:0;}
p{margin:0 0 1.1em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:2px;}
::selection{background:rgba(198,161,91,.32);color:var(--ink);}

.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 40px;}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--teal);font-family:var(--sans);margin-bottom:14px;
}
.eyebrow.on-dark{color:var(--gold);}
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.lead{font-size:1.18rem;line-height:1.75;color:var(--muted);}
.section-title{font-size:clamp(1.75rem,3vw,2.75rem);line-height:1.25;}
.section-sub{color:var(--muted);max-width:640px;margin-top:14px;}

/* ---------- 按钮 ---------- */
.btn{
  --bs-btn-focus-box-shadow:none;
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:48px;padding:0 26px;border-radius:var(--r-sm);
  font-family:var(--sans);font-size:15px;font-weight:600;letter-spacing:.08em;
  border:1px solid transparent;cursor:pointer;text-decoration:none;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t);
}
.btn .bi{font-size:15px;transition:transform var(--t);}
.btn:hover .bi{transform:translateX(4px);}
.btn-gold{background:var(--gold);color:var(--ink);border-color:var(--gold);}
.btn-gold:hover,.btn-gold:focus-visible{background:var(--ink);color:var(--gold);border-color:var(--gold);}
.btn-gold:active{background:var(--ink-2);color:var(--gold);}
.btn-ink{background:var(--ink);color:var(--paper);border-color:var(--ink);}
.btn-ink:hover,.btn-ink:focus-visible{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost{background:transparent;color:var(--ink);border-color:rgba(30,42,38,.28);}
.btn-ghost:hover,.btn-ghost:focus-visible{background:var(--ink);color:var(--paper);border-color:var(--ink);}
.btn-ghost.on-dark{color:var(--paper);border-color:var(--line-dark);}
.btn-ghost.on-dark:hover{background:var(--paper);color:var(--ink);border-color:var(--paper);}
.link-underline{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;letter-spacing:.04em;
  color:var(--gold-deep);position:relative;padding-bottom:3px;
}
.link-underline::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:100%;
  background:currentColor;transform:scaleX(0);transform-origin:left;
  transition:transform var(--t);
}
.link-underline:hover::after,.link-underline:focus-visible::after{transform:scaleX(1);}
.link-underline .bi{transition:transform var(--t);}
.link-underline:hover .bi{transform:translateX(4px);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--paper);
  border-bottom:1px solid transparent;
  transition:background var(--t),border-color var(--t),box-shadow var(--t);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow);}
.nav-wrap{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  min-height:76px;gap:24px;
}
.nav-side{display:flex;align-items:center;gap:28px;}
.nav-left{justify-content:flex-start;}
.nav-right{justify-content:flex-end;}
.nav-side a{
  position:relative;font-size:15px;color:var(--text);letter-spacing:.02em;padding:6px 0;
  transition:color var(--t);
}
.nav-side a::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:100%;
  background:var(--gold);transform:scaleX(0);transform-origin:left;transition:transform var(--t);
}
.nav-side a:hover{color:var(--gold-deep);}
.nav-side a:hover::after{transform:scaleX(1);}
.nav-side a.is-active{color:var(--ink);font-weight:600;}
.nav-side a.is-active::before{
  content:"";position:absolute;left:-13px;top:50%;width:6px;height:6px;
  margin-top:-3px;border-radius:50%;background:var(--gold);
}
.brand{
  display:inline-flex;align-items:center;gap:10px;justify-self:center;
  font-family:var(--serif);font-size:18px;font-weight:600;color:var(--ink);
  letter-spacing:.02em;line-height:1.2;white-space:nowrap;
}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:22px;height:22px;flex:0 0 22px;position:relative;display:inline-block;
  border:1px solid var(--gold);border-radius:2px;
}
.brand-mark::before,.brand-mark::after{
  content:"";position:absolute;background:var(--gold);
}
.brand-mark::before{left:50%;top:5px;width:1px;height:10px;margin-left:-.5px;}
.brand-mark::after{left:5px;top:50%;width:10px;height:1px;margin-top:-.5px;}
.nav-right-group{display:flex;align-items:center;justify-content:flex-end;gap:24px;grid-column:3;}
.nav-cta{height:42px;padding:0 20px;font-size:14px;}
.menu-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;background:transparent;border:1px solid var(--line);
  border-radius:var(--r-sm);color:var(--ink);cursor:pointer;transition:var(--t);
}
.menu-toggle:hover{border-color:var(--gold);color:var(--gold-deep);}

/* 移动端全屏菜单 */
.mobile-panel{
  position:fixed;inset:0;z-index:1060;background:var(--paper);
  padding:26px 18px 34px;display:none;flex-direction:column;
  overflow-y:auto;
}
.mobile-panel.is-open{display:flex;}
.mobile-panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:34px;}
.mobile-panel-head .brand{font-size:17px;}
.mobile-close{
  width:42px;height:42px;border:1px solid var(--line);background:transparent;
  border-radius:var(--r-sm);color:var(--ink);font-size:20px;line-height:1;cursor:pointer;
}
.mobile-close:hover{border-color:var(--gold);color:var(--gold-deep);}
.mobile-nav{display:flex;flex-direction:column;}
.mobile-nav a{
  display:flex;align-items:baseline;gap:16px;
  padding:18px 4px;border-bottom:1px solid var(--line);
  font-family:var(--serif);font-size:24px;color:var(--ink);
}
.mobile-nav a .num{
  font-family:var(--sans);font-size:12px;letter-spacing:.14em;color:var(--gold-deep);
}
.mobile-nav a:hover{color:var(--gold-deep);}
.mobile-panel-foot{margin-top:auto;padding-top:34px;display:flex;flex-direction:column;gap:14px;}
.mobile-panel-foot .btn{width:100%;}

/* ---------- 分类页 3 Hero ---------- */
.hero{
  background:var(--ink);color:var(--paper);position:relative;overflow:hidden;
  padding:72px 0 68px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(to right,rgba(247,243,234,.05) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(247,243,234,.05) 1px,transparent 1px);
  background-size:88px 88px,88px 88px;
  opacity:.55;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;right:-80px;top:-120px;width:420px;height:420px;
  border:1px solid var(--line-dark);border-radius:50%;pointer-events:none;
}
.hero-inner{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.hero h1{
  color:var(--paper);font-size:clamp(2.1rem,3.6vw,3.1rem);line-height:1.18;
  margin-bottom:20px;max-width:15em;
}
.hero h1 .accent{color:var(--gold);}
.hero .lead{color:rgba(247,243,234,.76);max-width:34em;margin-bottom:30px;font-size:1.08rem;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.hero-aside{
  border-left:1px solid var(--line-dark);padding-left:34px;
}
.hero-aside h2{
  font-size:14px;color:var(--gold);letter-spacing:.14em;font-family:var(--sans);
  font-weight:600;margin-bottom:18px;
}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 13px;
  border:1px solid var(--line-dark);border-radius:var(--r-sm);
  font-size:13px;color:rgba(247,243,234,.82);letter-spacing:.02em;
  transition:border-color var(--t),color var(--t),background var(--t);
}
.tag:hover{border-color:var(--gold);color:var(--gold);background:rgba(198,161,91,.07);}
.hero-note{
  margin-top:22px;font-size:13px;color:rgba(247,243,234,.56);line-height:1.8;
}

/* ---------- 建议做 / 避免做 ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:44px;}
.panel{
  background:var(--card);border-radius:var(--r-md);padding:34px 32px;
  border:1px solid var(--line);
}
.panel-do{border-color:rgba(110,143,132,.55);}
.panel-avoid{border-color:rgba(166,93,78,.5);}
.panel-head{display:flex;align-items:center;gap:12px;margin-bottom:22px;}
.panel-head h3{font-size:1.32rem;}
.panel-icon{
  width:34px;height:34px;flex:0 0 34px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;line-height:1;
}
.panel-do .panel-icon{border:1px solid var(--teal);color:var(--teal);}
.panel-avoid .panel-icon{border:1px solid var(--warn);color:var(--warn);}
.check-list li{
  display:flex;gap:13px;align-items:flex-start;
  padding:15px 0;border-top:1px solid var(--line);font-size:15.5px;line-height:1.75;
}
.check-list li:first-child{border-top:0;padding-top:0;}
.check-list .mark{
  width:18px;height:18px;flex:0 0 18px;margin-top:5px;border-radius:2px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:11px;line-height:1;
}
.mark-ok{border:1px solid var(--teal);color:var(--teal);}
.mark-no{border:1px solid var(--warn);color:var(--warn);}

/* ---------- 设备与验证 ---------- */
.device-section{background:var(--paper-2);}
.table-shell{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;margin-top:40px;
}
.table-scroll{overflow-x:auto;}
table.device-table{
  width:100%;border-collapse:collapse;min-width:680px;font-size:15px;
}
table.device-table thead th{
  background:var(--paper-2);color:var(--ink);font-family:var(--sans);
  font-weight:600;font-size:13.5px;letter-spacing:.06em;
  text-align:left;padding:16px 22px;border-bottom:1px solid var(--line);
  white-space:nowrap;
}
table.device-table tbody td{
  padding:17px 22px;border-bottom:1px solid var(--line);
  color:var(--text);line-height:1.75;vertical-align:top;
}
table.device-table tbody tr:last-child td{border-bottom:0;}
table.device-table tbody tr{transition:background var(--t);}
table.device-table tbody tr:hover{background:rgba(198,161,91,.06);}
table.device-table td:first-child{
  font-family:var(--serif);font-size:1.02rem;color:var(--ink);white-space:nowrap;
}
.verify-tag{
  display:inline-block;font-size:12.5px;color:var(--teal);
  border:1px solid rgba(110,143,132,.45);border-radius:var(--r-sm);
  padding:2px 9px;letter-spacing:.02em;
}
.figure-block{margin:44px 0 0;}
.figure-block figure{margin:0;}
.figure-frame{
  border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
  background:var(--card);
}
.figure-frame img{
  width:100%;aspect-ratio:21/9;object-fit:cover;transition:transform 420ms cubic-bezier(.2,.7,.2,1);
}
.figure-frame:hover img{transform:scale(1.03);}
.figure-block figcaption{
  font-size:13px;color:var(--muted);margin-top:12px;letter-spacing:.02em;
}

/* ---------- 自查清单 ---------- */
.audit-wrap{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start;}
.audit-aside{position:sticky;top:104px;}
.audit-aside h2{font-size:clamp(1.75rem,2.6vw,2.3rem);line-height:1.25;margin-bottom:16px;}
.audit-aside p{color:var(--muted);font-size:15px;}
.audit-list{border-top:1px solid var(--line);}
.audit-list li{
  display:flex;gap:18px;align-items:flex-start;padding:20px 4px;
  border-bottom:1px solid var(--line);font-size:16px;line-height:1.8;
  transition:background var(--t);
}
.audit-list li:hover{background:var(--paper-2);}
.audit-list .box{
  width:20px;height:20px;flex:0 0 20px;margin-top:4px;
  border:1px solid var(--gold-deep);border-radius:2px;position:relative;
}
.audit-list .box::after{
  content:"";position:absolute;left:6px;top:2px;width:6px;height:10px;
  border-right:2px solid var(--gold-deep);border-bottom:2px solid var(--gold-deep);
  transform:rotate(40deg) scale(.9);
}
.audit-list .idx{
  font-family:var(--sans);font-size:12px;letter-spacing:.12em;color:var(--gold-deep);
  min-width:26px;padding-top:3px;
}
.note-warn{
  margin-top:26px;padding:16px 0 16px 20px;border-left:2px solid var(--gold);
  font-size:14.5px;color:var(--text);line-height:1.85;background:transparent;
}

/* ---------- FAQ ---------- */
.faq-section{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:60px;align-items:start;}
.faq-intro{position:sticky;top:104px;}
.faq-intro h2{font-size:clamp(1.75rem,2.6vw,2.4rem);line-height:1.25;margin-bottom:16px;}
.faq-intro p{color:var(--muted);font-size:15px;margin-bottom:20px;}
.accordion{border:0;background:transparent;}
.accordion .accordion-item{
  background:transparent;border:0;border-top:1px solid var(--line);
  border-radius:0;
}
.accordion .accordion-item:last-child{border-bottom:1px solid var(--line);}
.accordion .accordion-header{margin:0;background:transparent;}
.accordion .accordion-button{
  background:transparent;box-shadow:none;border-radius:0;
  padding:24px 46px 24px 0;font-family:var(--serif);font-size:1.12rem;
  font-weight:600;color:var(--ink);line-height:1.55;text-align:left;
  transition:color var(--t);
}
.accordion .accordion-button:not(.collapsed){color:var(--gold-deep);background:transparent;}
.accordion .accordion-button:hover{color:var(--gold-deep);}
.accordion .accordion-button:focus,.accordion .accordion-button:focus-visible{
  box-shadow:none;outline:2px solid var(--gold);outline-offset:-2px;
}
.accordion .accordion-button::after{
  content:"+";background-image:none;font-family:var(--sans);font-size:20px;
  font-weight:400;color:var(--gold-deep);width:auto;height:auto;
  line-height:1;transform:none;transition:transform var(--t),color var(--t);
  display:flex;align-items:center;justify-content:center;flex:0 0 20px;
}
.accordion .accordion-button:not(.collapsed)::after{
  content:"+";transform:rotate(45deg);color:var(--gold-deep);
}
.accordion .accordion-body{
  padding:0 0 26px 0;max-width:680px;font-size:15.5px;line-height:1.9;
  color:var(--text);
}
.accordion .accordion-body p:last-child{margin-bottom:0;}

/* ---------- 文末 CTA ---------- */
.cta-band{background:var(--ink-2);color:var(--paper);padding:72px 0;}
.cta-inner{display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center;}
.cta-band h2{color:var(--paper);font-size:clamp(1.6rem,2.6vw,2.3rem);line-height:1.28;margin-bottom:14px;}
.cta-band p{color:rgba(247,243,234,.72);font-size:15.5px;margin:0;max-width:36em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:flex-end;}
.cta-actions .link-underline{color:var(--gold);}
.cta-actions .link-underline:hover{color:var(--paper);}

/* ---------- 固定转化条 ---------- */
.conv-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;
  background:var(--card);border-top:1px solid var(--line);
  box-shadow:0 -8px 28px rgba(12,21,18,.06);
}
.conv-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:68px;padding-top:10px;padding-bottom:10px;
}
.conv-left{display:flex;align-items:center;gap:16px;min-width:0;}
.conv-tag{
  flex:0 0 auto;font-size:12px;letter-spacing:.12em;color:var(--teal);
  border:1px solid rgba(110,143,132,.45);border-radius:var(--r-sm);
  padding:4px 10px;line-height:1.5;
}
.conv-text{font-size:14px;color:var(--muted);line-height:1.6;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.conv-right{display:flex;align-items:center;gap:20px;flex:0 0 auto;}
.conv-right .btn{height:44px;padding:0 22px;font-size:14px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--paper);padding:70px 0 26px;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1.4fr 1.4fr;gap:44px;}
.footer-brand .brand{color:var(--paper);font-size:19px;justify-self:start;white-space:normal;}
.footer-brand .brand:hover{color:var(--paper);}
.footer-brand p{
  margin-top:18px;font-size:14px;line-height:1.85;color:rgba(247,243,234,.66);max-width:24em;
}
.status-line{
  display:inline-flex;align-items:center;gap:9px;margin-top:18px;
  font-size:13px;color:rgba(247,243,234,.62);
}
.status-dot{
  width:7px;height:7px;border-radius:50%;background:var(--gold);flex:0 0 7px;
  box-shadow:0 0 0 3px rgba(198,161,91,.18);
}
.footer-col h4{
  font-family:var(--sans);font-size:13px;font-weight:600;letter-spacing:.12em;
  color:var(--gold);margin-bottom:18px;
}
.footer-col a{
  display:block;font-size:14.5px;color:rgba(247,243,234,.76);padding:6px 0;
  transition:color var(--t);
}
.footer-col a:hover{color:var(--gold);}
.footer-col p{font-size:13.5px;line-height:1.85;color:rgba(247,243,234,.6);margin-bottom:12px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:52px;padding-top:22px;border-top:1px solid var(--line-dark);
  font-size:12.5px;color:rgba(247,243,234,.5);letter-spacing:.02em;
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity 520ms cubic-bezier(.2,.7,.2,1),transform 520ms cubic-bezier(.2,.7,.2,1);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .wrap{padding:0 32px;}
  .hero-inner{gap:40px;}
  .audit-wrap,.faq-grid{gap:40px;}
  .footer-grid{grid-template-columns:1.6fr 1fr 1.2fr 1.2fr;gap:32px;}
}
@media (max-width:991.98px){
  .wrap{padding:0 28px;}
  .section{padding:64px 0;}
  .section-tight{padding:52px 0;}
  .nav-wrap{grid-template-columns:44px 1fr 44px;gap:12px;}
  .nav-side,.nav-cta{display:none;}
  .nav-right-group{gap:0;}
  .menu-toggle{display:inline-flex;}
  .hero{padding:56px 0 54px;}
  .hero-inner{grid-template-columns:1fr;gap:34px;}
  .hero-aside{border-left:0;border-top:1px solid var(--line-dark);padding-left:0;padding-top:26px;}
  .compare-grid{grid-template-columns:1fr;gap:20px;}
  .audit-wrap,.faq-grid{grid-template-columns:1fr;gap:30px;}
  .audit-aside,.faq-intro{position:static;}
  .cta-inner{grid-template-columns:1fr;gap:26px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .conv-text{display:none;}
}
@media (max-width:767.98px){
  body{padding-bottom:74px;}
  .wrap{padding:0 20px;}
  .brand{font-size:16px;}
  .section{padding:52px 0;}
  .section-tight{padding:44px 0;}
  .hero h1{font-size:clamp(1.85rem,7vw,2.4rem);}
  .hero .lead{font-size:1rem;}
  .panel{padding:26px 22px;}
  .table-shell{margin-top:28px;}
  .figure-frame img{aspect-ratio:16/9;}
  .cta-band{padding:54px 0;}
  .site-footer{padding:54px 0 22px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;margin-top:36px;}
  .conv-inner{gap:12px;}
  .conv-right{gap:14px;flex:1 1 auto;justify-content:flex-end;}
  .conv-right .btn{height:42px;padding:0 16px;font-size:13.5px;flex:0 1 auto;}
  .conv-right .link-underline{font-size:13px;}
}
@media (max-width:575.98px){
  .wrap{padding:0 18px;}
  .hero{padding:44px 0 46px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{width:100%;}
  .tag{height:30px;font-size:12.5px;padding:0 11px;}
  .audit-list li{font-size:15px;gap:12px;}
  .conv-text{display:none;}
  .conv-inner{min-height:58px;padding-top:8px;padding-bottom:8px;}
  .conv-right .btn{flex:1 1 46%;justify-content:center;padding:0 10px;font-size:13px;}
  .conv-right .link-underline{flex:1 1 40%;justify-content:center;}
  .conv-tag{font-size:11px;padding:3px 8px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important;}
  .reveal{opacity:1;transform:none;}
  .figure-frame:hover img{transform:none;}
}

/* roulang page: category2 */
:root{
  --ink:#0C1512;
  --ink-2:#17231F;
  --text:#1E2A26;
  --gold:#C6A15B;
  --gold-deep:#9E7B3F;
  --paper:#F7F3EA;
  --paper-2:#EDE6D8;
  --card:#FFFDF8;
  --mist:#6E8F84;
  --line:#D8D0C0;
  --line-dark:rgba(247,243,234,.16);
  --danger:#A65D4E;
  --r-s:2px;
  --r-m:4px;
  --shadow:0 12px 40px rgba(12,21,18,.08);
  --ease:cubic-bezier(.2,.7,.2,1);
  --serif:"Noto Serif CJK SC","Source Han Serif SC","Songti SC",STSong,serif;
  --sans:"Noto Sans CJK SC","PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:110px}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  padding-bottom:80px;
}
body.menu-open{overflow:hidden}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
button{font-family:inherit;font-size:inherit;cursor:pointer}
::selection{background:rgba(198,161,91,.35);color:var(--ink)}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 40px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,243,234,.97);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow)}
.nav-shell{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  min-height:76px;
  gap:20px;
}
.nav-side{display:flex;align-items:center;gap:28px}
.nav-side a{
  position:relative;
  font-size:14px;
  letter-spacing:.04em;
  color:var(--ink-2);
  padding:6px 0;
  transition:color .2s var(--ease);
}
.nav-side a::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;
  background:var(--gold);transition:width .24s var(--ease);
}
.nav-side a:hover{color:var(--gold-deep)}
.nav-side a:hover::after{width:100%}
.nav-side a.is-active{color:var(--ink);font-weight:600}
.nav-side a.is-active::before{
  content:"";position:absolute;left:-12px;top:50%;width:6px;height:6px;
  margin-top:-3px;border-radius:50%;background:var(--gold);
}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  justify-self:center;white-space:nowrap;
}
.brand-mark{
  width:9px;height:9px;background:var(--gold);display:inline-block;
  transform:rotate(45deg);flex:none;
}
.brand-name{
  font-family:var(--serif);
  font-size:1.02rem;
  letter-spacing:.04em;
  color:var(--ink);
  font-weight:600;
}
.nav-right{display:flex;align-items:center;justify-content:flex-end;gap:22px}

/* buttons */
.btn-gold,.btn-ink,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:48px;padding:0 26px;border-radius:var(--r-s);
  font-size:14px;letter-spacing:.08em;border:1px solid transparent;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
  line-height:1;white-space:nowrap;
}
.btn-gold{background:var(--gold);color:var(--ink);border-color:var(--gold)}
.btn-gold:hover{background:var(--ink);color:var(--gold);border-color:var(--gold)}
.btn-ink{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn-ink:hover{background:var(--gold);color:var(--ink);border-color:var(--gold)}
.btn-ghost{background:transparent;color:var(--ink);border-color:rgba(12,21,18,.28)}
.btn-ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn-gold .arw,.btn-ink .arw,.btn-ghost .arw,.link-line .arw{transition:transform .22s var(--ease)}
.btn-gold:hover .arw,.btn-ink:hover .arw,.btn-ghost:hover .arw,.link-line:hover .arw{transform:translateX(4px)}
.btn-sm{height:40px;padding:0 18px;font-size:13px;letter-spacing:.06em}
a:focus-visible,button:focus-visible{
  outline:2px solid var(--gold);outline-offset:3px;border-radius:2px;
}
.menu-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);
  background:var(--card);border-radius:var(--r-s);padding:0;
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.menu-toggle span{display:block;width:18px;height:1px;background:var(--ink)}

/* mobile panel */
.mobile-panel{
  position:fixed;inset:0;z-index:1080;background:var(--paper);
  padding:20px 24px 36px;display:flex;flex-direction:column;gap:8px;
  opacity:0;visibility:hidden;transform:translateY(-12px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
}
.mobile-panel.is-open{opacity:1;visibility:visible;transform:none}
.panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.panel-close{
  width:42px;height:42px;border:1px solid var(--line);background:var(--card);
  border-radius:var(--r-s);font-size:20px;line-height:1;color:var(--ink);
}
.mobile-panel nav{display:flex;flex-direction:column;margin-bottom:auto}
.mobile-panel nav a{
  display:flex;align-items:baseline;gap:14px;
  padding:18px 0;border-bottom:1px solid var(--line);
  font-family:var(--serif);font-size:1.4rem;color:var(--ink);
}
.mobile-panel nav a span{font-size:12px;letter-spacing:.14em;color:var(--gold-deep);font-family:var(--sans)}
.mobile-panel .panel-cta{display:flex;flex-direction:column;gap:12px;margin-top:26px}
.mobile-panel .panel-cta .btn-gold,.mobile-panel .panel-cta .btn-ghost{width:100%}

/* ---------- hero ---------- */
.hero-split{
  position:relative;
  background:var(--ink);
  overflow:hidden;
}
.hero-split::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(198,161,91,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(198,161,91,.07) 1px,transparent 1px);
  background-size:88px 88px;
  opacity:.5;
  pointer-events:none;
}
.hero-inner{
  position:relative;
  max-width:1240px;margin:0 auto;padding:0 40px;
  display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  align-items:stretch;
}
.hero-copy{
  padding:84px 56px 84px 0;
  color:rgba(247,243,234,.78);
}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:rgba(247,243,234,.5);margin-bottom:26px;
}
.crumb a{color:rgba(247,243,234,.62);transition:color .2s var(--ease)}
.crumb a:hover{color:var(--gold)}
.crumb .sep{color:rgba(247,243,234,.3)}
.crumb .now{color:rgba(247,243,234,.9)}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;color:var(--gold);
  border:1px solid rgba(198,161,91,.45);border-radius:var(--r-s);
  padding:5px 12px;margin-bottom:22px;
}
.hero-copy h1{
  font-family:var(--serif);
  font-size:clamp(2.1rem,3.7vw,3.4rem);
  line-height:1.16;
  letter-spacing:-.01em;
  color:var(--paper);
  font-weight:600;
  margin-bottom:22px;
}
.hero-copy h1 em{font-style:normal;color:var(--gold)}
.hero-lead{
  font-size:1.06rem;line-height:1.85;max-width:440px;
  color:rgba(247,243,234,.7);margin-bottom:34px;
}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:26px}
.link-line{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;letter-spacing:.04em;color:var(--paper);
  border-bottom:1px solid rgba(198,161,91,.55);padding-bottom:3px;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.link-line:hover{color:var(--gold);border-color:var(--gold)}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:38px;
}
.hero-meta span{
  font-size:12px;letter-spacing:.12em;color:var(--mist);
  border:1px solid rgba(110,143,132,.4);border-radius:var(--r-s);
  padding:4px 11px;
}
.hero-figure{
  position:relative;margin:0;min-height:540px;
  border-left:1px solid rgba(198,161,91,.45);
  overflow:hidden;
}
.hero-figure img{
  position:absolute;inset:0;width:100%;height:100%;
  object-fit:cover;
}
.hero-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:40px 26px 20px;
  font-size:12.5px;letter-spacing:.04em;color:rgba(247,243,234,.72);
  background:linear-gradient(to top,rgba(12,21,18,.82),rgba(12,21,18,0));
}

/* ---------- section base ---------- */
.section{padding:88px 0}
.section--paper2{background:var(--paper-2)}
.sec-head{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:40px;align-items:end;margin-bottom:48px}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.14em;color:var(--gold-deep);
  margin-bottom:14px;
}
.sec-head h2{
  font-family:var(--serif);font-weight:600;
  font-size:clamp(1.7rem,2.8vw,2.4rem);
  line-height:1.28;color:var(--ink);letter-spacing:-.01em;
}
.sec-head p{font-size:15.5px;line-height:1.9;color:#4A544F;max-width:620px}

/* ---------- flow overview ---------- */
.flow-grid{display:grid;grid-template-columns:220px minmax(0,1fr);gap:56px}
.flow-toc{position:sticky;top:110px;align-self:start}
.flow-toc h2{
  font-family:var(--serif);font-size:1.25rem;color:var(--ink);
  font-weight:600;margin-bottom:10px;
}
.flow-toc p{font-size:13.5px;line-height:1.8;color:#5C665F;margin-bottom:20px}
.flow-toc nav{display:flex;flex-direction:column;border-left:1px solid var(--line)}
.flow-toc nav a{
  position:relative;padding:9px 0 9px 18px;
  font-size:13.5px;color:#4A544F;transition:color .2s var(--ease);
}
.flow-toc nav a::before{
  content:"";position:absolute;left:-1px;top:0;bottom:0;width:2px;
  background:transparent;transition:background .2s var(--ease);
}
.flow-toc nav a:hover{color:var(--gold-deep)}
.flow-toc nav a:hover::before{background:var(--gold)}
.flow-list{display:flex;flex-direction:column}
.flow-step{
  position:relative;padding:14px 20px 46px 88px;border-radius:var(--r-m);
  transition:background .22s var(--ease);
}
.flow-step:hover{background:var(--card)}
.flow-step:not(:last-child)::before{
  content:"";position:absolute;left:29px;top:74px;bottom:8px;width:1px;background:var(--line);
}
.step-num{
  position:absolute;left:0;top:14px;width:58px;height:58px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--gold);border-radius:50%;
  font-family:var(--serif);font-size:1.05rem;color:var(--gold-deep);
  background:var(--paper);z-index:1;
}
.flow-step:hover .step-num{background:var(--card)}
.flow-step h3{
  font-family:var(--serif);font-size:1.28rem;font-weight:600;
  color:var(--ink);margin-bottom:10px;line-height:1.4;
}
.flow-step p{font-size:15.5px;line-height:1.9;color:#3F4A44;max-width:640px}
.step-note{
  display:flex;gap:10px;margin-top:16px !important;
  padding:12px 16px;background:var(--paper-2);
  border-left:2px solid var(--gold);border-radius:0 var(--r-m) var(--r-m) 0;
  font-size:14px !important;line-height:1.8 !important;color:#4A544F;
}
.step-note b{color:var(--gold-deep);font-weight:600;flex:none}
.step-figure{margin-top:20px;max-width:560px}
.step-figure img{width:100%;height:auto;border-radius:var(--r-m);border:1px solid var(--line)}
.step-figure figcaption{font-size:12.5px;color:#6B756E;margin-top:8px;line-height:1.7}

/* ---------- stuck points ---------- */
.stuck-list{border-top:1px solid var(--line);margin-top:8px}
.stuck-row{
  display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);
  gap:40px;padding:26px 18px;border-bottom:1px solid var(--line);
  transition:background .22s var(--ease);
}
.stuck-row:hover{background:var(--card)}
.stuck-row h3{
  font-family:var(--serif);font-size:1.14rem;font-weight:600;
  color:var(--ink);line-height:1.5;display:flex;gap:12px;align-items:flex-start;
}
.stuck-row h3 i{
  font-style:normal;color:var(--danger);font-size:12px;letter-spacing:.14em;
  border:1px solid rgba(166,93,78,.4);border-radius:var(--r-s);
  padding:2px 7px;flex:none;margin-top:3px;
}
.stuck-row p{font-size:15.5px;line-height:1.9;color:#3F4A44}
.stuck-row p b{color:var(--ink);font-weight:600}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:56px}
.faq-aside{position:sticky;top:110px;align-self:start}
.faq-aside h2{
  font-family:var(--serif);font-size:clamp(1.6rem,2.4vw,2.1rem);
  line-height:1.3;color:var(--ink);font-weight:600;margin-bottom:14px;
}
.faq-aside p{font-size:15px;line-height:1.9;color:#4A544F;max-width:300px;margin-bottom:18px}
.faq-accordion .accordion-item{
  background:transparent;border:0;border-top:1px solid var(--line);
}
.faq-accordion .accordion-item:last-child{border-bottom:1px solid var(--line)}
.faq-accordion .accordion-button{
  position:relative;
  background:transparent;color:var(--ink);
  font-family:var(--serif);font-size:1.06rem;font-weight:600;line-height:1.6;
  padding:22px 44px 22px 0;border-radius:0;box-shadow:none;
  width:100%;text-align:left;
}
.faq-accordion .accordion-button:not(.collapsed){
  color:var(--gold-deep);background:transparent;box-shadow:none;
}
.faq-accordion .accordion-button:focus{box-shadow:none;border-color:transparent}
.faq-accordion .accordion-button:focus-visible{outline:2px solid var(--gold);outline-offset:-2px}
.faq-accordion .accordion-button::before{
  content:"";position:absolute;right:4px;top:50%;width:13px;height:1px;
  margin-top:-.5px;background:var(--gold-deep);
}
.faq-accordion .accordion-button::after{
  content:"";position:absolute;right:9.5px;top:50%;width:1px;height:13px;
  margin-top:-6.5px;background:var(--gold-deep);
  background-image:none;transform:none;
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:scaleY(0);opacity:0}
.faq-accordion .accordion-body{
  padding:0 0 26px;font-size:15.5px;line-height:1.95;color:#3F4A44;max-width:680px;
}
.faq-accordion .accordion-body p+p{margin-top:12px}

/* ---------- cta band ---------- */
.cta-band{background:var(--ink-2);color:rgba(247,243,234,.78);padding:72px 0}
.cta-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:40px;align-items:center}
.cta-band h2{
  font-family:var(--serif);font-size:clamp(1.6rem,2.6vw,2.2rem);
  line-height:1.32;color:var(--paper);font-weight:600;margin-bottom:14px;
}
.cta-band p{font-size:15.5px;line-height:1.9;color:rgba(247,243,234,.65);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:18px;align-items:center;justify-content:flex-end}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(247,243,234,.78);padding:72px 0 0}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1.2fr 1.2fr;gap:44px;
  padding-bottom:48px;
}
.footer-brand .brand{margin-bottom:16px;justify-self:start}
.footer-brand .brand-name{color:var(--paper);font-size:1.1rem}
.footer-brand p{font-size:13.5px;line-height:1.85;color:rgba(247,243,234,.6);max-width:290px}
.status-line{
  display:flex;align-items:center;gap:8px;margin-top:16px;
  font-size:12.5px;color:rgba(247,243,234,.55);
}
.status-dot{width:6px;height:6px;border-radius:50%;background:var(--mist);flex:none}
.footer-col h4{
  font-size:13px;letter-spacing:.12em;color:var(--gold);
  font-weight:600;margin-bottom:16px;
}
.footer-col a{
  display:block;font-size:14px;padding:5px 0;color:rgba(247,243,234,.75);
  transition:color .2s var(--ease);
}
.footer-col a:hover{color:var(--gold)}
.footer-col p{font-size:13px;line-height:1.85;color:rgba(247,243,234,.58);margin-bottom:10px}
.footer-bottom{
  border-top:1px solid var(--line-dark);
  padding:20px 0 26px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:12.5px;color:rgba(247,243,234,.5);
}

/* ---------- bottom bar ---------- */
.bottom-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;
  background:var(--card);border-top:1px solid var(--line);
  box-shadow:0 -6px 24px rgba(12,21,18,.06);
}
.bar-inner{
  max-width:1240px;margin:0 auto;padding:0 40px;height:68px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.bar-note{display:flex;align-items:center;gap:14px;min-width:0}
.bar-tag{
  font-size:12px;letter-spacing:.12em;color:var(--gold-deep);
  border:1px solid rgba(198,161,91,.5);border-radius:var(--r-s);
  padding:3px 9px;flex:none;
}
.bar-note p{font-size:13.5px;color:#5C665F;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bar-actions{display:flex;align-items:center;gap:22px;flex:none}
.bar-actions .btn-gold{height:44px;padding:0 22px;font-size:13.5px}
.bar-actions .link-line{color:var(--ink);border-color:rgba(158,123,63,.55)}
.bar-actions .link-line:hover{color:var(--gold-deep);border-color:var(--gold-deep)}

/* ---------- reveal ---------- */
.js .reveal{opacity:0;transform:translateY(14px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.js .reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .nav-side{gap:22px}
  .flow-grid{grid-template-columns:200px minmax(0,1fr);gap:40px}
}
@media (max-width:991px){
  .wrap{padding:0 28px}
  .nav-side,.nav-cta{display:none}
  .menu-toggle{display:flex}
  .nav-shell{grid-template-columns:1fr auto 1fr;min-height:68px}
  .nav-right{gap:12px}
  .hero-inner{grid-template-columns:1fr;padding:0 28px}
  .hero-copy{padding:64px 0 52px}
  .hero-figure{min-height:300px;border-left:0;border-top:1px solid rgba(198,161,91,.45)}
  .hero-lead{max-width:none}
  .section{padding:64px 0}
  .sec-head,.faq-grid,.stuck-row,.cta-grid{grid-template-columns:1fr;gap:24px}
  .sec-head{align-items:start}
  .flow-grid{grid-template-columns:1fr;gap:32px}
  .flow-toc,.faq-aside{position:static}
  .flow-toc nav{flex-direction:row;flex-wrap:wrap;border-left:0;border-top:1px solid var(--line);gap:0 22px}
  .flow-toc nav a{padding:10px 0}
  .flow-toc nav a::before{display:none}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .bar-inner{height:62px;padding:0 28px}
  .bar-note{display:none}
  .bar-actions{width:100%;justify-content:space-between;gap:14px}
  .bar-actions .btn-gold{flex:1}
}
@media (max-width:767px){
  html{scroll-padding-top:96px}
  .wrap{padding:0 18px}
  .hero-inner{padding:0 18px}
  .hero-copy{padding:52px 0 44px}
  .hero-copy h1{font-size:clamp(1.85rem,7vw,2.4rem)}
  .hero-lead{font-size:1rem}
  .section{padding:46px 0}
  .flow-step{padding:10px 8px 40px 70px}
  .flow-step:not(:last-child)::before{left:23px;top:66px}
  .step-num{width:48px;height:48px;font-size:.95rem}
  .step-note{flex-direction:column;gap:4px}
  .stuck-row{padding:22px 4px}
  .faq-accordion .accordion-button{font-size:1rem;padding:18px 38px 18px 0}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column}
  .bar-inner{padding:0 18px;height:58px}
  .bar-actions .btn-gold{height:42px;padding:0 14px;font-size:13px}
  .bar-actions .link-line{font-size:13px}
  body{padding-bottom:72px}
}
@media (max-width:575px){
  .hero-actions{gap:18px}
  .btn-gold,.btn-ink,.btn-ghost{height:46px;padding:0 20px;font-size:13.5px}
  .hero-meta span{font-size:11px;padding:3px 9px}
  .sec-head h2{font-size:1.55rem}
  .flow-toc nav{gap:0 16px}
  .flow-toc nav a{font-size:13px}
  .stuck-row h3{flex-direction:column;gap:6px;align-items:flex-start}
  .footer-brand p{max-width:none}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .js .reveal{opacity:1;transform:none}
  .btn-gold:hover .arw,.btn-ink:hover .arw,.btn-ghost:hover .arw,.link-line:hover .arw{transform:none}
}

/* roulang page: category4 */
:root{
  --ink:#0C1512;
  --ink-deep:#17231F;
  --ink-text:#1E2A26;
  --gold:#C6A15B;
  --gold-deep:#9E7B3F;
  --paper:#F7F3EA;
  --paper-soft:#EDE6D8;
  --card:#FFFDF8;
  --mist:#6E8F84;
  --line:#D8D0C0;
  --line-dark:rgba(247,243,234,.16);
  --warn:#A65D4E;
  --serif:"Noto Serif CJK SC","Source Han Serif SC","Songti SC",STSong,serif;
  --sans:"Noto Sans CJK SC","PingFang SC","Microsoft YaHei",sans-serif;
  --r-btn:2px;
  --r-card:4px;
  --sh:0 12px 40px rgba(12,21,18,.08);
  --ease:cubic-bezier(.2,.7,.2,1);
  --wrap:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:100px}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.9;
  color:var(--ink-text);
  background:var(--paper);
  padding-bottom:88px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--gold-deep);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--ink)}
h1,h2,h3,h4{font-family:var(--serif);color:var(--ink);margin:0;font-weight:600;letter-spacing:-.005em}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding-left:1.1em}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 40px}
.eyebrow{
  font-size:12px;letter-spacing:.14em;color:var(--mist);
  text-transform:uppercase;margin:0 0 12px;font-weight:600;
}

/* ===== 导航 ===== */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,243,234,.97);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(8px);
}
.nav-shell{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  gap:24px;height:76px;
}
.nav-side{display:flex;align-items:center;gap:26px}
.nav-left{justify-self:start}
.nav-right{justify-self:end}
.nav-side a{
  position:relative;font-size:14px;letter-spacing:.06em;color:var(--ink-text);
  padding:6px 0;white-space:nowrap;
}
.nav-side a::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;
  background:var(--gold);transition:width .22s var(--ease);
}
.nav-side a:hover{color:var(--gold-deep)}
.nav-side a:hover::after{width:100%}
.nav-side a.is-active{color:var(--ink);font-weight:600}
.nav-side a.is-active::after{width:100%;background:var(--gold-deep)}
.nav-side a.is-active::before{
  content:"";position:absolute;left:-11px;top:calc(50% - 3px);
  width:6px;height:6px;border-radius:50%;background:var(--gold);
}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--serif);font-size:1.05rem;font-weight:600;color:var(--ink);
  letter-spacing:.02em;white-space:nowrap;justify-self:center;
}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:14px;height:14px;border:1px solid var(--gold);transform:rotate(45deg);
  position:relative;display:inline-block;flex:0 0 auto;
}
.brand-mark::after{content:"";position:absolute;inset:4px;background:var(--gold)}
.nav-right-wrap{display:flex;align-items:center;gap:22px;justify-self:end}
.nav-cta{
  height:38px;padding:0 18px;font-size:13px;letter-spacing:.08em;
}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);
  border-radius:2px;background:transparent;padding:0;
  flex-direction:column;justify-content:center;align-items:center;gap:5px;
  transition:border-color .2s var(--ease);
}
.nav-toggle span{display:block;width:18px;height:1px;background:var(--ink);transition:background .2s}
.nav-toggle:hover{border-color:var(--gold-deep)}
.nav-toggle:hover span{background:var(--gold-deep)}

/* 移动菜单 */
.mobile-menu{
  position:fixed;inset:0;z-index:1045;background:var(--paper);
  padding:20px 0 28px;display:flex;flex-direction:column;
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
  overflow-y:auto;
}
.mobile-menu.is-open{opacity:1;visibility:visible;transform:none}
.mobile-menu-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:0 18px 16px;border-bottom:1px solid var(--line);margin-bottom:8px;
}
.mobile-close{
  width:40px;height:40px;border:1px solid var(--line);background:transparent;
  border-radius:2px;font-size:18px;line-height:1;color:var(--ink);
}
.mobile-nav{display:flex;flex-direction:column;padding:8px 18px}
.mobile-nav a{
  display:flex;align-items:baseline;gap:14px;padding:18px 0;
  border-bottom:1px solid var(--line);font-family:var(--serif);
  font-size:1.35rem;color:var(--ink);
}
.mobile-nav a .num{font-size:12px;letter-spacing:.14em;color:var(--gold-deep);font-family:var(--sans)}
.mobile-nav a.is-active{color:var(--gold-deep)}
.mobile-foot{display:flex;flex-direction:column;gap:10px;padding:24px 18px 0;margin-top:auto}
.mobile-foot .btn{width:100%}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:14px;letter-spacing:.08em;font-family:var(--sans);
  border:1px solid transparent;cursor:pointer;text-decoration:none;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn-gold{background:var(--gold);color:var(--ink);border-color:var(--gold)}
.btn-gold:hover{background:var(--ink);color:var(--gold);border-color:var(--gold)}
.btn-ink{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn-ink:hover{background:var(--gold);color:var(--ink);border-color:var(--gold)}
.btn-ghost{background:transparent;color:var(--ink);border-color:rgba(12,21,18,.28)}
.btn-ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn:active{transform:translateY(1px)}
.btn .arrow{transition:transform .22s var(--ease);display:inline-block}
.btn:hover .arrow{transform:translateX(4px)}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;
  color:var(--gold-deep);border-bottom:1px solid rgba(158,123,63,.4);
  padding-bottom:2px;
}
.link-more:hover{color:var(--ink);border-bottom-color:var(--ink)}
.link-more .arrow{transition:transform .22s var(--ease)}
.link-more:hover .arrow{transform:translateX(4px)}

/* ===== 标签 ===== */
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;
  border:1px solid var(--line);border-radius:2px;background:transparent;
  font-size:12px;letter-spacing:.1em;color:var(--mist);
}
.tag-gold{color:var(--gold-deep);border-color:rgba(198,161,91,.5);background:rgba(198,161,91,.08)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none}

/* ===== 面包屑 ===== */
.crumb{font-size:13px;color:rgba(30,42,38,.6);padding:22px 0 0}
.crumb a{color:rgba(30,42,38,.6)}
.crumb a:hover{color:var(--gold-deep)}
.crumb .sep{margin:0 8px;color:var(--line)}
.crumb .now{color:var(--ink-text)}

/* ===== Hero ===== */
.page-hero{
  position:relative;overflow:hidden;background:var(--card);
  border-bottom:1px solid var(--line);padding:56px 0 64px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(12,21,18,.09) 1px,transparent 1px);
  background-size:26px 26px;opacity:.45;
  -webkit-mask-image:linear-gradient(100deg,transparent 0%,#000 55%);
  mask-image:linear-gradient(100deg,transparent 0%,#000 55%);
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:7fr 5fr;
  gap:56px;align-items:start;
}
.hero-copy h1{
  font-size:clamp(2.25rem,4.4vw,3.5rem);line-height:1.14;
  letter-spacing:-.012em;margin:0 0 20px;
}
.hero-copy .lead{
  font-size:1.12rem;line-height:1.8;color:rgba(30,42,38,.78);
  max-width:560px;margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-bottom:26px}
.hero-note{
  display:flex;align-items:center;gap:10px;font-size:13px;
  color:rgba(30,42,38,.6);
}
.hero-note::before{content:"";width:26px;height:1px;background:var(--gold)}

.search-card{
  border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--paper);padding:26px 26px 22px;box-shadow:0 1px 0 rgba(12,21,18,.02);
}
.search-title{font-size:1.18rem;line-height:1.5;margin:0 0 16px}
.search-form{display:flex;gap:10px}
.search-form .form-control{flex:1 1 auto;min-width:0}
.search-form .btn{flex:0 0 auto;padding:0 20px;height:48px}
.search-tip{font-size:13px;color:rgba(30,42,38,.6);margin:12px 0 18px;line-height:1.7}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  height:30px;padding:0 12px;border:1px solid var(--line);border-radius:2px;
  background:transparent;font-size:13px;color:rgba(30,42,38,.72);
  letter-spacing:.04em;cursor:pointer;
  transition:all .2s var(--ease);
}
.chip:hover{border-color:var(--gold-deep);color:var(--gold-deep)}
.chip.is-on{
  border-color:var(--gold-deep);color:var(--gold-deep);
  background:rgba(198,161,91,.12);font-weight:600;
}

/* ===== 知识库主体 ===== */
.kb-body{padding:76px 0 88px}
.kb-grid{display:grid;grid-template-columns:3fr 9fr;gap:56px;align-items:start}
.kb-index{position:sticky;top:100px}
.index-title{
  font-size:13px;letter-spacing:.14em;color:var(--mist);
  font-weight:600;margin:0 0 14px;font-family:var(--sans);
}
.kb-index nav{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.kb-index nav a{
  display:flex;align-items:baseline;justify-content:space-between;gap:12px;
  padding:13px 0;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--ink-text);transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.kb-index nav a:hover{color:var(--gold-deep);padding-left:4px}
.kb-index nav a .num{font-size:12px;color:var(--gold-deep);letter-spacing:.12em}
.index-figure{margin:26px 0 0}
.index-figure img{
  width:100%;height:auto;border-radius:var(--r-card);
  border:1px solid var(--line);object-fit:cover;aspect-ratio:3/2;
}
.index-figure figcaption{font-size:12.5px;color:rgba(30,42,38,.6);margin-top:10px;line-height:1.7}

.qa-group{margin-bottom:52px;scroll-margin-top:100px}
.qa-group.is-hidden{display:none}
.qa-group-title{
  display:flex;align-items:baseline;gap:12px;
  font-size:1.55rem;line-height:1.4;margin:0 0 8px;
}
.qa-group-title::before{
  content:"";width:22px;height:2px;background:var(--gold);
  display:inline-block;flex:0 0 auto;transform:translateY(-6px);
}
.qa-group-desc{font-size:14px;color:rgba(30,42,38,.62);margin:0 0 14px;max-width:680px}

.accordion{--bs-accordion-bg:transparent;--bs-accordion-border-width:0;--bs-accordion-border-radius:0;--bs-accordion-inner-border-radius:0;--bs-accordion-btn-focus-box-shadow:none;--bs-accordion-btn-padding-x:0;--bs-accordion-body-padding-x:0}
.qa-item{border-top:1px solid var(--line)}
.qa-item:last-child{border-bottom:1px solid var(--line)}
.qa-item.is-hidden{display:none}
.qa-q{margin:0;font-size:1rem;font-weight:600;font-family:var(--serif)}
.qa-btn{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:19px 0;background:transparent!important;color:var(--ink-text)!important;
  font-family:var(--serif);font-size:1.05rem;font-weight:600;line-height:1.65;
  text-align:left;border:0;border-radius:0;box-shadow:none!important;
  transition:color .2s var(--ease);
}
.qa-btn:hover{color:var(--gold-deep)!important}
.qa-btn::after{
  background-image:none!important;content:"+";width:auto;height:auto;
  flex:0 0 auto;font-family:var(--sans);font-size:1.15rem;font-weight:400;
  color:var(--gold-deep);line-height:1;transform:none;
  transition:transform .22s var(--ease);margin-left:auto;
}
.qa-btn:not(.collapsed)::after{transform:rotate(45deg)}
.qa-btn:not(.collapsed){color:var(--ink)!important;background:transparent!important}
.qa-a{
  padding:0 0 22px;max-width:680px;font-size:15.5px;line-height:1.9;
  color:rgba(30,42,38,.84);
}
.qa-a strong{color:var(--ink)}
.qa-noresult{
  border:1px dashed var(--line);border-radius:var(--r-card);
  padding:30px 24px;text-align:center;font-size:15px;color:rgba(30,42,38,.68);
  margin-top:18px;
}
.qa-noresult[hidden]{display:none}

/* ===== 表单 ===== */
.ask-section{
  background:var(--paper-soft);border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);padding:76px 0 82px;
  scroll-margin-top:96px;
}
.ask-grid{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.ask-intro h2{font-size:clamp(1.6rem,2.4vw,2.15rem);line-height:1.3;margin:0 0 16px}
.ask-intro p{font-size:15px;color:rgba(30,42,38,.76);max-width:340px}
.ask-points{list-style:none;padding:0;margin:22px 0 0;font-size:13.5px;color:rgba(30,42,38,.66)}
.ask-points li{padding:8px 0;border-top:1px solid rgba(216,208,192,.8);display:flex;gap:8px}
.ask-points li::before{content:"";width:6px;height:6px;background:var(--gold);flex:0 0 auto;margin-top:9px}
.ask-form{
  display:grid;grid-template-columns:1fr 1fr;gap:20px 24px;
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:28px;
}
.field{display:flex;flex-direction:column;gap:8px;margin:0}
.field-full{grid-column:1 / -1}
.field label{font-size:13.5px;letter-spacing:.04em;color:var(--ink);font-weight:600}
.form-control,.form-select{
  height:48px;border:1px solid var(--line);border-radius:2px;
  background:#fff;color:var(--ink-text);font-size:15px;padding:0 14px;
  box-shadow:none;font-family:var(--sans);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
textarea.form-control{height:auto;padding:12px 14px;line-height:1.85;resize:vertical;min-height:132px}
.form-control::placeholder{color:rgba(30,42,38,.4)}
.form-control:focus,.form-select:focus{
  border-color:var(--gold-deep);background:#fff;color:var(--ink-text);
  box-shadow:0 0 0 3px rgba(198,161,91,.18);outline:none;
}
.form-check{display:flex;align-items:flex-start;gap:10px;margin:0;padding:0}
.form-check-input{
  width:18px;height:18px;margin:4px 0 0;flex:0 0 auto;
  border:1px solid var(--line);border-radius:2px;background:#fff;box-shadow:none;
}
.form-check-input:checked{background-color:var(--gold-deep);border-color:var(--gold-deep)}
.form-check-input:focus{box-shadow:0 0 0 3px rgba(198,161,91,.18);border-color:var(--gold-deep)}
.form-check-label{font-size:13.5px;color:rgba(30,42,38,.74);line-height:1.7}
.field-error{font-size:12.5px;color:var(--warn);min-height:0;line-height:1.6}
.field.has-error .form-control,.field.has-error .form-select{border-color:var(--warn)}
.form-actions{grid-column:1 / -1;display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-top:4px}
.form-status{font-size:13.5px;line-height:1.7;margin:0}
.form-status.is-err{color:var(--warn)}
.form-status.is-ok{color:var(--mist)}

/* ===== 文末 CTA ===== */
.end-cta{background:var(--ink-deep);color:var(--paper);padding:66px 0}
.end-cta .cta-grid{display:grid;grid-template-columns:1.35fr .8fr;gap:44px;align-items:center}
.end-cta h2{color:var(--paper);font-size:clamp(1.6rem,2.6vw,2.2rem);line-height:1.3;margin:0 0 14px}
.end-cta p{color:rgba(247,243,234,.72);font-size:15px;max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:16px;justify-content:flex-end}
.end-cta .link-more{color:var(--gold);border-bottom-color:rgba(198,161,91,.55)}
.end-cta .link-more:hover{color:var(--paper);border-bottom-color:var(--paper)}

/* ===== 固定转化条 ===== */
.conversion-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:1020;
  background:var(--card);border-top:1px solid var(--line);
  box-shadow:0 -6px 24px rgba(12,21,18,.05);
}
.conversion-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;height:68px;
}
.conversion-text{display:flex;align-items:baseline;gap:12px;min-width:0}
.conversion-text .label{
  font-size:12px;letter-spacing:.14em;color:var(--gold-deep);font-weight:600;white-space:nowrap;
}
.conversion-text .note{
  font-size:13.5px;color:rgba(30,42,38,.66);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.conversion-actions{display:flex;align-items:center;gap:18px;flex:0 0 auto}
.conversion-actions .btn{height:42px;padding:0 20px;font-size:13.5px}

/* ===== 页脚 ===== */
.site-footer{background:var(--ink);color:var(--paper);padding:64px 0 26px}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1.2fr 1.1fr;
  gap:40px;padding-bottom:44px;border-bottom:1px solid var(--line-dark);
}
.footer-brand .brand{color:var(--paper);font-size:1.1rem;justify-self:start}
.footer-brand .brand:hover{color:var(--paper)}
.footer-brand p{
  font-size:13.5px;color:rgba(247,243,234,.66);margin:16px 0 18px;line-height:1.85;max-width:320px;
}
.status-line{display:flex;align-items:center;gap:8px;font-size:12.5px;color:rgba(247,243,234,.6)}
.status-dot{width:6px;height:6px;border-radius:50%;background:var(--gold);flex:0 0 auto}
.footer-col h4{
  font-family:var(--sans);font-size:13px;letter-spacing:.12em;
  color:rgba(247,243,234,.86);margin:0 0 16px;font-weight:600;
}
.footer-col a{
  display:block;font-size:13.5px;color:rgba(247,243,234,.7);
  padding:5px 0;transition:color .2s var(--ease);
}
.footer-col a:hover{color:var(--gold)}
.footer-col p{font-size:13px;color:rgba(247,243,234,.6);line-height:1.85;margin:0 0 10px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  flex-wrap:wrap;padding-top:22px;font-size:12.5px;color:rgba(247,243,234,.5);
}

/* ===== 动效 ===== */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ===== 响应式 ===== */
@media (max-width:1199.98px){
  .wrap{padding:0 28px}
  .hero-grid{gap:40px}
  .kb-grid{gap:40px}
  .ask-grid{gap:40px}
}
@media (max-width:991.98px){
  .nav-shell{grid-template-columns:1fr auto 1fr;height:64px;gap:12px}
  .nav-side,.nav-cta{display:none!important}
  .nav-toggle{display:inline-flex}
  .nav-right-wrap{justify-self:end}
  .nav-left{display:none}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .kb-grid{grid-template-columns:1fr;gap:32px}
  .kb-index{position:static}
  .kb-index nav{flex-direction:row;flex-wrap:wrap;border-top:0;gap:10px}
  .kb-index nav a{
    border:1px solid var(--line);border-radius:2px;padding:8px 14px;
    font-size:14px;justify-content:flex-start;
  }
  .kb-index nav a:hover{padding-left:14px;border-color:var(--gold-deep)}
  .kb-index nav a .num{display:none}
  .index-figure{display:none}
  .ask-grid{grid-template-columns:1fr;gap:30px}
  .ask-intro p{max-width:none}
  .ask-points{max-width:520px}
  .end-cta .cta-grid{grid-template-columns:1fr;gap:26px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .page-hero{padding:40px 0 52px}
  .kb-body{padding:56px 0 64px}
  .ask-section{padding:56px 0 62px}
}
@media (max-width:767.98px){
  body{padding-bottom:76px}
  .wrap{padding:0 18px}
  .hero-copy h1{font-size:clamp(1.95rem,7.4vw,2.6rem)}
  .hero-copy .lead{font-size:1.02rem}
  .search-card{padding:20px}
  .search-form{flex-direction:column}
  .search-form .btn{width:100%}
  .ask-form{grid-template-columns:1fr;padding:22px}
  .field-full{grid-column:auto}
  .form-actions{flex-direction:column;align-items:stretch}
  .form-actions .btn{width:100%}
  .conversion-inner{height:58px;gap:12px}
  .conversion-text .note{display:none}
  .conversion-actions{gap:10px;flex:1}
  .conversion-actions .btn{flex:1 1 0;padding:0 10px;height:40px;font-size:12.5px}
  .conversion-actions .link-more{display:none}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .site-footer{padding:48px 0 22px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .qa-group-title{font-size:1.32rem}
  .qa-btn{font-size:1rem;padding:16px 0}
  .end-cta{padding:52px 0}
}
@media (max-width:575.98px){
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .crumb{font-size:12px}
  .qa-a{font-size:15px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
}