/* roulang page: index */
:root{
  --paper:#F7F5F1;
  --card:#FFFFFF;
  --ink:#0F2E2C;
  --ink-hover:#17433F;
  --gold:#C08A3E;
  --gold-light:#E4C489;
  --text:#12181A;
  --text-2:#4A5658;
  --text-3:#8A9294;
  --line:#E3E1DB;
  --ok:#2F7D5B;
  --warn:#B9803A;
  --err:#B4453B;
  --r-card:10px;
  --r-img:6px;
  --r-btn:4px;
  --r-badge:2px;
  --sh-1:0 1px 2px rgba(18,24,26,.06);
  --sh-2:0 14px 32px -12px rgba(18,24,26,.18);
  --ease:cubic-bezier(.2,.8,.2,1);
  --sidebar-w:240px;
  --topbar-h:56px;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",Georgia,serif;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --num:"Inter","Helvetica Neue",Arial,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:16.5px;
  line-height:1.9;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:solid;border-width:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;padding:0}
ul,ol{list-style:none;margin:0;padding:0}
p{margin:0}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:600;letter-spacing:-.01em;line-height:1.25}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px}
::selection{background:var(--gold-light);color:var(--ink)}

/* 容器 */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ============ 侧边导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--ink);color:#EDEAE3;
  display:flex;flex-direction:column;
  padding:28px 18px 24px;
  z-index:60;
  transition:width .28s var(--ease),transform .28s var(--ease);
}
.sidebar__brand{display:flex;align-items:center;gap:12px;padding:4px 8px 0;margin-bottom:34px}
.logo{display:flex;align-items:center;gap:12px;min-width:0}
.logo__bar{width:2px;height:34px;background:var(--gold);flex:0 0 2px;border-radius:1px}
.logo__mark{font-family:var(--serif);font-size:1.18rem;letter-spacing:.02em;color:#F4F1EA;white-space:nowrap}
.logo__mini{display:none}
.sidebar__nav{display:flex;flex-direction:column;gap:4px;flex:1 1 auto}
.side-link{
  position:relative;display:flex;align-items:center;gap:12px;
  min-height:46px;padding:0 12px;border-radius:6px;
  font-size:.95rem;color:#C9D2CF;
  transition:background .22s var(--ease),color .22s var(--ease);
}
.side-link i{width:18px;text-align:center;font-size:.95rem;color:#8FA39E;transition:color .22s var(--ease)}
.side-link:hover{background:rgba(255,255,255,.06);color:#FFFFFF}
.side-link:hover i{color:var(--gold-light)}
.side-link.is-active{background:rgba(255,255,255,.09);color:#FFFFFF;font-weight:600}
.side-link.is-active::before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;background:var(--gold);border-radius:2px}
.side-link.is-active i{color:var(--gold-light)}
.sidebar__cta{
  margin-top:24px;display:flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;border-radius:var(--r-btn);
  background:var(--gold);color:#20180B;font-weight:600;font-size:.95rem;
  transition:background .22s var(--ease),transform .22s var(--ease);
}
.sidebar__cta:hover{background:#D09A4C;transform:translateY(-1px)}
.sidebar__foot{margin-top:18px;font-size:.72rem;letter-spacing:.06em;color:#7C8E8A;line-height:1.7}

/* 顶部栏（移动端） */
.topbar{
  position:fixed;top:0;left:0;right:0;height:var(--topbar-h);
  background:var(--ink);color:#F4F1EA;
  display:none;align-items:center;justify-content:space-between;
  padding:0 16px;z-index:70;
}
.topbar .logo__mark{font-size:1.05rem}
.topbar__burger{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  border-radius:6px;color:#F4F1EA;font-size:1.1rem;
}
.topbar__burger:hover{background:rgba(255,255,255,.08)}
.scrim{
  position:fixed;inset:0;background:rgba(18,24,26,.5);
  opacity:0;visibility:hidden;transition:opacity .26s var(--ease),visibility .26s;z-index:65;
}
.scrim.is-open{opacity:1;visibility:visible}

/* ============ 主内容 ============ */
.main{margin-left:var(--sidebar-w);padding-bottom:0;overflow-x:hidden}
.section{padding:104px 0}
.section--tight{padding:80px 0}
.section-head{margin-bottom:44px;max-width:760px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.78rem;letter-spacing:.16em;color:var(--gold);
  text-transform:uppercase;font-family:var(--num);margin-bottom:14px;
}
.eyebrow::before{content:"";width:20px;height:1px;background:var(--gold)}
h2.section-title{
  font-size:clamp(1.6rem,3vw,2.4rem);
  color:var(--text);position:relative;padding-bottom:14px;
}
h2.section-title::after{
  content:"";position:absolute;left:0;bottom:0;width:44px;height:2px;background:var(--gold);
}
.section-desc{margin-top:16px;color:var(--text-2);font-size:1rem;max-width:640px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:.95rem;font-weight:600;letter-spacing:.01em;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
  white-space:nowrap;
}
.btn--gold{background:var(--gold);color:#20180B}
.btn--gold:hover{background:#D09A4C;transform:translateY(-1px)}
.btn--ink{background:var(--ink);color:#F4F1EA}
.btn--ink:hover{background:var(--ink-hover);transform:translateY(-1px)}
.btn--ghost{border:1px solid rgba(244,241,234,.5);color:#F4F1EA}
.btn--ghost:hover{border-color:var(--gold-light);color:var(--gold-light);transform:translateY(-1px)}
.btn--outline{border:1px solid var(--line);color:var(--text);background:var(--card)}
.btn--outline:hover{border-color:var(--gold);color:var(--gold)}
.btn--sm{min-height:40px;padding:0 16px;font-size:.88rem}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--gold);font-size:.9rem;font-weight:600}
.link-arrow i{transition:transform .22s var(--ease)}
.link-arrow:hover i{transform:translateX(4px)}

/* 徽章 / 标签 */
.badge{
  display:inline-block;padding:3px 9px;border-radius:var(--r-badge);
  background:rgba(192,138,62,.12);color:#8C5F21;
  font-size:.74rem;letter-spacing:.06em;font-weight:600;line-height:1.6;
}
.tag{display:inline-block;padding:4px 10px;border:1px solid var(--line);border-radius:var(--r-badge);font-size:.78rem;color:var(--text-2)}

/* ============ Hero ============ */
.hero{position:relative;min-height:78vh;display:flex;align-items:center;color:#F4F1EA;overflow:hidden}
.hero__bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  transform:scale(1.02);
}
.hero__bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(15,46,44,.94) 0%,rgba(15,46,44,.78) 48%,rgba(15,46,44,.62) 100%);
}
.hero__inner{position:relative;z-index:2;padding-top:88px;padding-bottom:88px;max-width:780px}
.hero h1{
  font-size:clamp(2.4rem,5vw,4.2rem);
  line-height:1.15;letter-spacing:-.02em;color:#FFFFFF;
}
.hero__sub{margin-top:24px;font-size:1.075rem;line-height:1.85;color:#D5DDD9;max-width:620px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}
.hero__trust{
  display:flex;flex-wrap:wrap;gap:0;margin-top:44px;
  border-top:1px solid rgba(244,241,234,.18);padding-top:20px;
}
.hero__trust li{
  font-size:.86rem;color:#BDCAC6;padding:0 20px 0 0;margin-right:20px;
  border-right:1px solid rgba(244,241,234,.18);line-height:1.5;
}
.hero__trust li:last-child{border-right:0;margin-right:0;padding-right:0}

/* ============ 卖点三连 ============ */
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.pillar{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px 30px;box-shadow:var(--sh-1);
  transition:background .24s var(--ease),border-color .24s var(--ease);
  display:flex;flex-direction:column;
}
.pillar:hover{background:#FCFBF9;border-color:var(--gold-light)}
.pillar--lead{grid-column:span 2;padding:0;overflow:hidden;display:grid;grid-template-columns:1.05fr .95fr}
.pillar--lead:hover{background:var(--card)}
.pillar__media{min-height:280px;background:var(--ink) center/cover no-repeat;position:relative}
.pillar__media img{width:100%;height:100%;object-fit:cover;border-radius:0}
.pillar__media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,46,44,0) 40%,rgba(15,46,44,.35) 100%)}
.pillar__body{padding:34px 32px;display:flex;flex-direction:column}
.pillar__num{
  font-family:var(--num);font-size:.82rem;letter-spacing:.18em;color:var(--gold);
  font-weight:600;margin-bottom:16px;
}
.pillar h3{font-size:1.3rem;margin-bottom:14px}
.pillar p{color:var(--text-2);font-size:.95rem;line-height:1.85}
.pillar__foot{margin-top:auto;padding-top:22px;border-top:1px solid var(--line);font-size:.82rem;color:var(--text-3);letter-spacing:.04em}

/* ============ 步骤条 ============ */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:64px}
.step{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:20px 22px;display:flex;gap:14px;align-items:flex-start}
.step__n{
  font-family:var(--num);font-size:.8rem;font-weight:700;color:var(--gold);
  border:1px solid var(--gold-light);border-radius:2px;padding:2px 7px;line-height:1.5;flex:0 0 auto;
}
.step h4{font-size:.98rem;font-family:var(--sans);font-weight:600;margin-bottom:4px}
.step p{font-size:.84rem;color:var(--text-3);line-height:1.7}

/* ============ 场景图文 ============ */
.scene{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;margin-bottom:80px}
.scene:last-child{margin-bottom:0}
.scene__media{order:2}
.scene--alt .scene__media{order:0}
.scene__media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-img);border:1px solid var(--line);
}
.scene__index{
  font-family:var(--num);font-size:.78rem;letter-spacing:.18em;color:var(--gold);font-weight:600;margin-bottom:14px;
}
.scene h3{font-size:1.5rem;margin-bottom:20px}
.scene__row{margin-bottom:16px;display:flex;gap:12px}
.scene__row span:first-child{
  flex:0 0 auto;font-size:.76rem;font-weight:600;color:var(--ink);
  background:rgba(15,46,44,.07);border-radius:2px;padding:2px 8px;height:24px;line-height:20px;letter-spacing:.06em;
}
.scene__row p{font-size:.95rem;color:var(--text-2);line-height:1.8}

/* ============ 数据指标 ============ */
.stats-wrap{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:64px 0}
.stat{text-align:left;padding:0 8px}
.stat__n{font-family:var(--serif);font-size:clamp(2.2rem,4vw,3.1rem);color:var(--ink);line-height:1.1;letter-spacing:-.02em}
.stat__n em{font-style:normal;font-size:.5em;color:var(--gold);margin-left:4px}
.stat__t{margin-top:12px;font-size:.9rem;color:var(--text-2)}
.stat__d{margin-top:6px;font-size:.8rem;color:var(--text-3);line-height:1.7}

/* ============ 最新信息 ============ */
.latest-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.lead-card{
  display:grid;grid-template-columns:1.15fr 1fr;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);margin-bottom:28px;
  transition:box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.lead-card:hover{box-shadow:var(--sh-2);border-color:var(--gold-light)}
.lead-card__media img{width:100%;height:100%;min-height:260px;aspect-ratio:16/9;object-fit:cover;border-radius:0}
.lead-card__body{padding:34px 32px;display:flex;flex-direction:column}
.lead-card__body h3{font-size:1.45rem;margin:16px 0 14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.lead-card__body p{color:var(--text-2);font-size:.95rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.lead-card__meta{margin-top:auto;padding-top:22px;display:flex;align-items:center;justify-content:space-between;font-size:.82rem;color:var(--text-3)}
.lead-card__meta time{font-family:var(--num);letter-spacing:.04em}
.post-list{border-top:1px solid var(--line)}
.post-row{
  display:flex;align-items:center;gap:20px;padding:22px 4px 22px 0;
  border-bottom:1px solid var(--line);position:relative;
  transition:padding-left .22s var(--ease);
}
.post-row::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;background:var(--gold);
  opacity:0;transition:opacity .22s var(--ease);
}
.post-row:hover{padding-left:18px}
.post-row:hover::before{opacity:1}
.post-row__title{font-family:var(--serif);font-size:1.05rem;flex:1 1 auto;transition:color .22s var(--ease)}
.post-row:hover .post-row__title{color:var(--gold)}
.post-row__cat{flex:0 0 auto;font-size:.76rem;color:var(--text-3);letter-spacing:.05em}
.post-row time{flex:0 0 auto;font-family:var(--num);font-size:.82rem;color:var(--text-3);letter-spacing:.04em}
.post-row__arrow{flex:0 0 auto;color:var(--text-3);transition:transform .22s var(--ease),color .22s var(--ease)}
.post-row:hover .post-row__arrow{transform:translateX(4px);color:var(--gold)}
.empty-state{
  text-align:center;padding:72px 24px;background:var(--card);
  border:1px dashed var(--line);border-radius:var(--r-card);
}
.empty-state i{font-size:1.7rem;color:var(--gold-light)}
.empty-state p{margin:18px 0 22px;color:var(--text-2);font-size:.95rem}

/* ============ FAQ ============ */
.faq{max-width:820px}
.faq__item{border-bottom:1px solid var(--line)}
.faq__item:first-child{border-top:1px solid var(--line)}
.faq__q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 4px;text-align:left;font-family:var(--serif);font-size:1.125rem;line-height:1.6;
  transition:color .22s var(--ease);
}
.faq__q:hover{color:var(--gold)}
.faq__icon{
  position:relative;flex:0 0 22px;width:22px;height:22px;
  transition:transform .26s var(--ease);
}
.faq__icon::before,.faq__icon::after{
  content:"";position:absolute;background:var(--gold);border-radius:1px;
}
.faq__icon::before{left:0;top:10px;width:22px;height:1.5px}
.faq__icon::after{left:10px;top:0;width:1.5px;height:22px}
.faq__item.is-open .faq__icon{transform:rotate(45deg)}
.faq__a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
.faq__a p{padding:0 44px 26px 4px;color:var(--text-2);font-size:.95rem;line-height:1.9}

/* ============ CTA ============ */
.cta{position:relative;background:var(--ink);color:#F4F1EA;padding:96px 0;overflow:hidden}
.cta__bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.28}
.cta__grid{
  position:absolute;inset:0;opacity:.16;
  background-image:linear-gradient(rgba(255,255,255,.5) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:56px 56px;
}
.cta__inner{position:relative;z-index:2;max-width:680px}
.cta h2{font-size:clamp(1.7rem,3vw,2.35rem);color:#FFFFFF}
.cta p{margin-top:18px;color:#CBD6D2;font-size:1rem}
.cta__actions{margin-top:34px;display:flex;flex-wrap:wrap;gap:14px}

/* ============ 页脚 ============ */
.footer{background:var(--ink);color:#A9B7B3;padding:76px 0 30px;border-top:1px solid rgba(255,255,255,.08)}
.footer__top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer__brand .logo__mark{color:#F4F1EA;font-size:1.15rem}
.footer__brand p{margin-top:18px;font-size:.88rem;line-height:1.85;color:#8FA09C;max-width:300px}
.footer h4{font-family:var(--sans);font-size:.84rem;letter-spacing:.06em;color:#DDE5E2;margin-bottom:18px;font-weight:600}
.footer__links li{margin-bottom:11px}
.footer__links a{font-size:.88rem;color:#9FAFAB;transition:color .2s var(--ease)}
.footer__links a:hover{color:var(--gold-light)}
.footer__contact li{font-size:.88rem;color:#9FAFAB;margin-bottom:11px;display:flex;gap:10px;align-items:flex-start}
.footer__contact i{color:var(--gold);margin-top:5px;font-size:.78rem}
.footer__bottom{padding-top:26px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:.8rem;color:#7C8E8A}
.footer__bottom span{letter-spacing:.02em}

/* ============ 底部固定转化条 ============ */
.sticky-bar{
  position:fixed;left:var(--sidebar-w);right:0;bottom:0;z-index:55;
  background:rgba(15,46,44,.97);color:#F4F1EA;
  border-top:1px solid var(--gold);
  transform:translateY(100%);transition:transform .24s var(--ease);
}
.sticky-bar.is-show{transform:translateY(0)}
.sticky-bar.is-hidden{display:none}
.sticky-bar__inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:64px}
.sticky-bar__text{font-size:.9rem;color:#CFDAD6}
.sticky-bar__actions{display:flex;align-items:center;gap:16px}
.sticky-bar__link{font-size:.88rem;color:var(--gold-light);border-bottom:1px solid rgba(228,196,137,.4);padding-bottom:2px}
.sticky-bar__link:hover{color:#FFFFFF;border-color:#FFFFFF}
.sticky-bar__close{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  border-radius:6px;color:#A9B7B3;font-size:1.05rem;transition:background .2s var(--ease),color .2s var(--ease);
}
.sticky-bar__close:hover{background:rgba(255,255,255,.1);color:#FFFFFF}

/* ============ 滚动入场 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--sidebar-w:88px}
  .sidebar{padding:24px 12px;align-items:center}
  .sidebar__brand{justify-content:center;padding:0;margin-bottom:28px;gap:0}
  .logo__full,.sidebar__foot{display:none}
  .logo__mini{display:inline}
  .logo__bar{height:26px}
  .side-link{justify-content:center;padding:0;gap:0;width:46px}
  .side-link span{display:none}
  .side-link::after{
    content:attr(data-label);position:absolute;left:calc(100% + 12px);top:50%;transform:translateY(-50%);
    background:var(--ink);color:#F4F1EA;font-size:.82rem;padding:6px 12px;border-radius:var(--r-btn);
    white-space:nowrap;opacity:0;visibility:hidden;transition:opacity .2s var(--ease),visibility .2s;z-index:80;
    border:1px solid rgba(228,196,137,.35);
  }
  .side-link:hover::after{opacity:1;visibility:visible}
  .sidebar__cta{width:46px;padding:0;font-size:0}
  .sidebar__cta i{font-size:1rem}
  .sticky-bar__text{display:none}
}
@media (max-width:1023px){
  :root{--sidebar-w:0px}
  .topbar{display:flex}
  .sidebar{
    width:280px;transform:translateX(-100%);padding:24px 18px;align-items:stretch;
    overflow-y:auto;
  }
  .sidebar.is-open{transform:translateX(0)}
  .sidebar__brand{justify-content:flex-start;gap:12px;padding:4px 8px 0}
  .logo__full{display:inline}
  .logo__mini{display:none}
  .sidebar__cta{width:100%;font-size:.95rem;padding:0}
  .sidebar__cta i{font-size:.95rem}
  .sidebar__foot{display:block}
  .side-link{justify-content:flex-start;padding:0 12px;gap:12px;width:auto}
  .side-link span{display:inline}
  .side-link::after{display:none}
  .main{margin-left:0;padding-top:var(--topbar-h)}
  .sticky-bar{left:0}
  .section{padding:72px 0}
  .section--tight{padding:60px 0}
  .stats{grid-template-columns:repeat(2,1fr);padding:48px 0}
  .footer__top{grid-template-columns:1fr 1fr;gap:32px}
  .sticky-bar__text{display:block}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .hero{min-height:auto}
  .hero__inner{padding-top:64px;padding-bottom:64px}
  .hero__trust{gap:8px;flex-direction:column;border-top:1px solid rgba(244,241,234,.18)}
  .hero__trust li{border-right:0;padding:8px 0;margin-right:0;border-bottom:1px solid rgba(244,241,234,.12);width:100%}
  .hero__trust li:last-child{border-bottom:0}
  .pillars{grid-template-columns:1fr}
  .pillar--lead{grid-column:auto;grid-template-columns:1fr}
  .pillar__media{min-height:190px}
  .steps{grid-template-columns:1fr;margin-bottom:44px}
  .scene{grid-template-columns:1fr;gap:26px;margin-bottom:52px}
  .scene__media,.scene--alt .scene__media{order:0}
  .lead-card{grid-template-columns:1fr}
  .lead-card__body{padding:26px 22px}
  .post-row{flex-wrap:wrap;gap:8px 14px;align-items:flex-start}
  .post-row__title{flex:1 1 100%;font-size:1rem}
  .latest-head{flex-direction:column;align-items:flex-start}
  .stats{grid-template-columns:1fr;gap:32px}
  .footer__top{grid-template-columns:1fr}
  .sticky-bar__inner{min-height:56px;gap:12px}
  .sticky-bar__text{display:none}
  .faq__a p{padding-right:8px}
}
@media (max-width:559px){
  body{font-size:15.5px}
  .container{padding:0 16px}
  .hero h1{font-size:clamp(1.9rem,8vw,2.4rem)}
  .btn{width:100%}
  .hero__actions{flex-direction:column;align-items:stretch}
  .cta__actions{flex-direction:column;align-items:stretch}
  .sticky-bar__actions{width:100%;justify-content:space-between}
  .sticky-bar .btn{width:auto}
  .section{padding:60px 0}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --paper:#F7F5F1;
  --card:#FFFFFF;
  --ink:#0F2E2C;
  --ink-hover:#17433F;
  --gold:#C08A3E;
  --gold-hover:#CE9A4E;
  --gold-soft:#E4C489;
  --text:#12181A;
  --text-2:#4A5658;
  --text-3:#8A9294;
  --line:#E3E1DB;
  --ok:#2F7D5B;
  --warn:#B9803A;
  --err:#B4453B;
  --radius-card:10px;
  --radius-img:6px;
  --radius-btn:4px;
  --radius-badge:2px;
  --shadow-1:0 1px 2px rgba(18,24,26,.06);
  --shadow-2:0 14px 32px -12px rgba(18,24,26,.18);
  --ease:cubic-bezier(.2,.8,.2,1);
  --sidebar-w:240px;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --sans:"Inter","PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:600;color:var(--text);letter-spacing:-.01em}
p{margin:0}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px;border-radius:2px}
::selection{background:var(--gold-soft);color:var(--ink)}

/* ---------- 布局骨架 ---------- */
.shell{min-height:100vh}
.main{
  margin-left:var(--sidebar-w);
  min-width:0;
  padding:36px 0 0;
  transition:margin-left .3s var(--ease);
}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- 侧栏导航 ---------- */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--ink);
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:28px 28px,28px 28px;
  display:flex;
  flex-direction:column;
  padding:26px 18px 22px;
  z-index:50;
  overflow-y:auto;
  border-right:1px solid rgba(255,255,255,.06);
}
.sidebar__top{display:flex;align-items:center;justify-content:space-between;padding:0 4px 22px;border-bottom:1px solid rgba(255,255,255,.09)}
.sidebar__close{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  color:rgba(255,255,255,.7);
  font-size:19px;
  border-radius:var(--radius-btn);
  transition:background .22s var(--ease),color .22s var(--ease);
}
.sidebar__close:hover{background:rgba(255,255,255,.08);color:#fff}
.logo{display:inline-flex;align-items:center;gap:10px;min-width:0}
.logo__bar{width:2px;height:32px;background:var(--gold);flex:0 0 auto;border-radius:1px}
.logo__mark{display:flex;flex-direction:column;line-height:1.18;min-width:0}
.logo__full{font-family:var(--serif);font-size:19px;letter-spacing:.04em;color:#fff;white-space:nowrap}
.logo__sub{font-size:11px;letter-spacing:.16em;color:rgba(255,255,255,.46);white-space:nowrap}
.sidebar__nav{display:flex;flex-direction:column;gap:6px;padding:22px 0;flex:1}
.side-link{
  position:relative;
  display:flex;align-items:center;gap:12px;
  min-height:46px;
  padding:11px 12px;
  border-radius:6px;
  color:rgba(255,255,255,.72);
  font-size:15px;
  letter-spacing:.02em;
  transition:background .24s var(--ease),color .24s var(--ease);
}
.side-link::before{
  content:"";
  position:absolute;left:0;top:12px;bottom:12px;width:3px;
  background:transparent;border-radius:0 2px 2px 0;
  transition:background .24s var(--ease);
}
.side-link i{width:20px;text-align:center;font-size:15px;color:rgba(255,255,255,.55);transition:color .24s var(--ease)}
.side-link:hover,.side-link.is-active{background:rgba(255,255,255,.07);color:#fff}
.side-link:hover i,.side-link.is-active i{color:var(--gold-soft)}
.side-link.is-active::before{background:var(--gold)}
.sidebar__foot{padding-top:18px;border-top:1px solid rgba(255,255,255,.09);display:flex;flex-direction:column;gap:12px}
.sidebar__note{font-size:12px;letter-spacing:.08em;color:rgba(255,255,255,.42);text-align:center}

/* ---------- 顶部栏（移动端） ---------- */
.topbar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:56px;
  background:var(--card);
  border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;
  padding:0 16px;
  z-index:55;
  box-shadow:var(--shadow-1);
}
.topbar .logo__full{color:var(--text);font-size:17px}
.topbar .logo__sub{color:var(--text-3)}
.topbar .logo__bar{height:26px}
.hamburger{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:19px;color:var(--ink);
  border-radius:var(--radius-btn);
  transition:background .22s var(--ease);
}
.hamburger:hover{background:#F1EEE7}
.overlay{
  display:none;
  position:fixed;inset:0;
  background:rgba(18,24,26,.5);
  z-index:49;
  opacity:0;pointer-events:none;
  transition:opacity .26s var(--ease);
}
.overlay.is-open{opacity:1;pointer-events:auto}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;font-weight:600;letter-spacing:.02em;
  white-space:nowrap;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.btn i{font-size:13px;transition:transform .24s var(--ease)}
.btn:hover i{transform:translateX(3px)}
.btn--primary{background:var(--ink);color:#fff}
.btn--primary:hover{background:var(--ink-hover);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn--gold{background:var(--gold);color:#231708}
.btn--gold:hover{background:var(--gold-hover);transform:translateY(-1px)}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--text-2)}
.btn--ghost:hover{border-color:var(--gold);color:var(--ink);background:#fff}
.btn--block{width:100%}
.btn--sm{min-height:40px;padding:0 16px;font-size:14px}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--text-3);letter-spacing:.02em;
  padding:4px 0 26px;
}
.breadcrumb a{color:var(--text-2);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--gold)}
.breadcrumb i{font-size:10px;color:#C4C0B6}
.breadcrumb__current{
  color:var(--text);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ---------- 文章头部 ---------- */
.article__head{
  position:relative;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:40px 44px 34px;
  box-shadow:var(--shadow-1);
  overflow:hidden;
}
.article__head::after{
  content:"";position:absolute;left:0;top:0;width:100%;height:3px;
  background:linear-gradient(90deg,var(--gold) 0%,var(--gold-soft) 46%,transparent 100%);
}
.article__eyebrow{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:16px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;
  background:#F3EFE6;
  border:1px solid var(--gold-soft);
  border-radius:var(--radius-badge);
  color:#7C5A24;
  font-size:12px;font-weight:600;letter-spacing:.08em;
}
.badge--ghost{background:transparent;border-color:var(--line);color:var(--text-3)}
.article__title{
  font-size:clamp(1.85rem,3.4vw,2.7rem);
  line-height:1.3;
  letter-spacing:-.02em;
  color:var(--ink);
  max-width:22em;
}
.article__meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px 22px;
  margin-top:22px;padding-top:20px;
  border-top:1px solid var(--line);
  font-size:13.5px;color:var(--text-2);
}
.article__meta span,.article__meta time{display:inline-flex;align-items:center;gap:7px}
.article__meta i{font-size:12.5px;color:var(--gold)}
.article__meta time{font-variant-numeric:tabular-nums;color:var(--text-2)}

/* ---------- 正文阅读区 ---------- */
.article__inner{max-width:782px;margin:0 auto}
.article__body{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:44px 46px 40px;
  margin-top:22px;
  box-shadow:var(--shadow-1);
}
.article__content{font-size:17px;line-height:1.95;color:#1B2325}
.article__content>*:first-child{margin-top:0}
.article__content p{margin:0 0 1.25em}
.article__content h2{
  position:relative;
  font-size:1.6rem;line-height:1.4;
  margin:2.3em 0 .85em;
  padding-left:15px;
  color:var(--ink);
}
.article__content h2::before{
  content:"";position:absolute;left:0;top:.26em;bottom:.26em;width:2px;
  background:var(--gold);border-radius:1px;
}
.article__content h3{
  position:relative;
  font-size:1.22rem;line-height:1.5;
  margin:1.9em 0 .7em;
  padding-left:13px;
  color:var(--ink);
}
.article__content h3::before{
  content:"";position:absolute;left:0;top:.34em;bottom:.34em;width:2px;
  background:var(--gold-soft);border-radius:1px;
}
.article__content h4{font-size:1.05rem;margin:1.6em 0 .6em;color:var(--ink)}
.article__content ul,.article__content ol{margin:0 0 1.35em;padding-left:1.35em}
.article__content ul li{list-style:none;position:relative;margin-bottom:.6em}
.article__content ul li::before{
  content:"";position:absolute;left:-1.05em;top:.78em;
  width:6px;height:2px;background:var(--gold);
}
.article__content ol{list-style:decimal}
.article__content ol li{margin-bottom:.6em;padding-left:.2em}
.article__content ol li::marker{color:var(--gold);font-weight:600}
.article__content a{color:#8F6526;border-bottom:1px solid var(--gold-soft);transition:color .2s var(--ease),border-color .2s var(--ease)}
.article__content a:hover{color:var(--gold);border-color:var(--gold)}
.article__content img{
  width:100%;border-radius:var(--radius-img);
  border:1px solid var(--line);
  margin:1.6em 0 .7em;
}
.article__content figure{margin:1.6em 0}
.article__content figcaption{
  font-size:13px;color:var(--text-3);text-align:center;letter-spacing:.02em;margin-top:.5em;
}
.article__content blockquote{
  margin:1.6em 0;padding:16px 22px;
  background:#FAF8F3;
  border-left:2px solid var(--gold);
  border-radius:0 var(--radius-img) var(--radius-img) 0;
  color:var(--text-2);
  font-size:16px;
}
.article__content blockquote p:last-child{margin-bottom:0}
.article__content table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;
  border:1px solid var(--line);border-radius:var(--radius-img);overflow:hidden;
}
.article__content th,.article__content td{
  padding:11px 14px;border-bottom:1px solid var(--line);text-align:left;
}
.article__content th{background:#F5F2EC;color:var(--ink);font-weight:600}
.article__content tr:last-child td{border-bottom:0}
.article__content hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}
.article__content code{
  background:#F3F0E9;padding:2px 6px;border-radius:3px;font-size:14.5px;
}

.empty-state{
  text-align:center;padding:56px 20px;
  border:1px dashed var(--line);border-radius:var(--radius-card);background:#FCFBF8;
}
.empty-state i{font-size:30px;color:var(--gold);margin-bottom:16px;display:block}
.empty-state h3{font-size:1.15rem;margin-bottom:8px;color:var(--ink)}
.empty-state p{font-size:14.5px;color:var(--text-2);margin-bottom:22px}

/* ---------- 返回入口 ---------- */
.backlinks{
  display:flex;flex-wrap:wrap;gap:14px;
  margin-top:26px;padding-top:24px;border-top:1px solid var(--line);
}

/* ---------- 相关推荐 ---------- */
.related{padding:76px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:28px}
.section-head h2{font-size:clamp(1.5rem,2.4vw,1.95rem);color:var(--ink)}
.section-head p{font-size:14px;color:var(--text-3);letter-spacing:.04em;margin-top:8px}
.section-head .more{
  display:inline-flex;align-items:center;gap:7px;
  font-size:14px;color:var(--text-2);
  border-bottom:1px solid var(--gold-soft);padding-bottom:3px;
  transition:color .22s var(--ease),border-color .22s var(--ease);
}
.section-head .more:hover{color:var(--gold);border-color:var(--gold)}
.section-head .more i{font-size:12px;transition:transform .22s var(--ease)}
.section-head .more:hover i{transform:translateX(4px)}
.related__grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.rel-card{
  display:flex;flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:border-color .26s var(--ease),box-shadow .26s var(--ease),transform .26s var(--ease);
}
.rel-card:hover{border-color:var(--gold-soft);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.rel-card__cover{
  aspect-ratio:4/3;overflow:hidden;
  background:var(--ink);
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:22px 22px,22px 22px;
}
.rel-card__cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.rel-card:hover .rel-card__cover img{transform:scale(1.03)}
.rel-card__body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:12px;flex:1}
.rel-card__title{
  font-family:var(--serif);font-size:1.02rem;line-height:1.55;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .22s var(--ease);
}
.rel-card:hover .rel-card__title{color:#8F6526}
.rel-card__meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--text-3);letter-spacing:.04em;margin-top:auto}

/* ---------- CTA ---------- */
.cta{
  margin-top:88px;
  background:var(--ink);
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:30px 30px,30px 30px;
  padding:82px 0;
}
.cta__inner{display:flex;align-items:center;justify-content:space-between;gap:34px;flex-wrap:wrap}
.cta h2{color:#fff;font-size:clamp(1.6rem,3vw,2.25rem);line-height:1.3;max-width:20em}
.cta p{color:rgba(255,255,255,.62);font-size:15px;margin-top:12px;max-width:38em}
.cta__actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.cta__link{color:rgba(255,255,255,.72);font-size:14.5px;border-bottom:1px solid rgba(255,255,255,.28);padding-bottom:2px;transition:color .22s var(--ease),border-color .22s var(--ease)}
.cta__link:hover{color:var(--gold-soft);border-color:var(--gold-soft)}

/* ---------- 页脚 ---------- */
.footer{
  background:var(--ink);
  color:rgba(255,255,255,.66);
  padding:68px 0 26px;
  border-top:1px solid rgba(255,255,255,.08);
}
.footer__top{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:38px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.footer__brand p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.58);margin-top:18px;max-width:30em}
.footer h4{font-size:14px;letter-spacing:.06em;color:#fff;font-family:var(--sans);font-weight:600;margin-bottom:16px}
.footer__links{display:flex;flex-direction:column;gap:11px}
.footer__links a{font-size:14px;color:rgba(255,255,255,.62);transition:color .22s var(--ease),padding-left .22s var(--ease)}
.footer__links a:hover{color:var(--gold-soft);padding-left:4px}
.footer__contact{display:flex;flex-direction:column;gap:13px}
.footer__contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;line-height:1.7;color:rgba(255,255,255,.6)}
.footer__contact i{color:var(--gold);font-size:13px;margin-top:5px}
.footer__bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:22px;font-size:13px;color:rgba(255,255,255,.45);letter-spacing:.03em;
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
.reveal:nth-child(2){transition-delay:.06s}
.reveal:nth-child(3){transition-delay:.12s}
.reveal:nth-child(4){transition-delay:.18s}

/* ---------- 断点 ---------- */
@media (max-width:1439px) and (min-width:1024px){
  :root{--sidebar-w:88px}
  .sidebar{padding:22px 12px 18px;align-items:center}
  .sidebar__top{padding:0 0 18px;justify-content:center;width:100%}
  .logo__mark{display:none}
  .sidebar__nav{width:100%;align-items:center}
  .side-link{justify-content:center;padding:12px 0;width:48px}
  .side-link span{
    position:absolute;left:calc(100% + 12px);top:50%;transform:translateY(-50%);
    background:var(--ink);color:#fff;padding:7px 13px;border-radius:var(--radius-btn);
    font-size:13px;white-space:nowrap;box-shadow:var(--shadow-2);
    opacity:0;pointer-events:none;transition:opacity .2s var(--ease);
  }
  .side-link:hover span{opacity:1}
  .sidebar__foot{width:100%}
  .sidebar__note{display:none}
  .btn--block{padding:0;font-size:13px}
}
@media (max-width:1023px){
  .main{margin-left:0;padding-top:56px}
  .topbar{display:flex}
  .sidebar{
    width:280px;
    transform:translateX(-100%);
    transition:transform .28s var(--ease);
    z-index:60;
  }
  .sidebar.is-open{transform:translateX(0)}
  .sidebar__close{display:inline-flex}
  .overlay{display:block}
  .article__head{padding:32px 26px 28px}
  .article__body{padding:32px 26px 30px}
  .footer__top{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:900px){
  .related__grid{grid-template-columns:1fr 1fr}
  .cta__inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:768px){
  body{font-size:16px}
  .container{padding:0 20px}
  .main{padding-top:56px}
  .article__meta{gap:8px 16px;font-size:13px}
  .article__content{font-size:16.5px}
  .article__content h2{font-size:1.4rem}
  .article__content h3{font-size:1.15rem}
  .related__grid{grid-template-columns:1fr}
  .related{padding-top:56px}
  .cta{margin-top:64px;padding:64px 0}
  .footer{padding:52px 0 22px}
  .footer__top{grid-template-columns:1fr;gap:28px}
  .footer__bottom{justify-content:flex-start}
  .breadcrumb__current{max-width:200px}
}
@media (max-width:560px){
  .article__head{padding:26px 20px 24px}
  .article__body{padding:24px 18px 24px}
  .article__title{font-size:1.62rem}
  .article__content{font-size:16px;line-height:1.9}
  .btn{width:100%}
  .backlinks{flex-direction:column}
  .cta__actions{width:100%;flex-direction:column;align-items:stretch}
  .cta__link{text-align:center}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --paper:#F7F5F1;
  --card:#FFFFFF;
  --ink:#0F2E2C;
  --ink-2:#17433F;
  --gold:#C08A3E;
  --gold-soft:#E4C489;
  --text:#12181A;
  --text-2:#4A5658;
  --muted:#8A9294;
  --line:#E3E1DB;
  --ok:#2F7D5B;
  --warn:#B9803A;
  --err:#B4453B;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",Georgia,serif;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --num:"Inter","Helvetica Neue",Arial,sans-serif;
  --r-card:10px;
  --r-img:6px;
  --r-btn:4px;
  --r-badge:2px;
  --sh-1:0 1px 2px rgba(18,24,26,.06);
  --sh-2:0 14px 32px -12px rgba(18,24,26,.18);
  --side-w:240px;
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::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:16.5px;
  line-height:1.9;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px;border-radius:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 28px}
.serif{font-family:var(--serif)}
.num{font-family:var(--num);font-variant-numeric:tabular-nums}

/* ---------- Logo ---------- */
.logo{display:inline-flex;align-items:stretch;gap:10px}
.logo__bar{width:2px;background:var(--gold);border-radius:1px;display:block}
.logo__mark{display:flex;flex-direction:column;justify-content:center}
.logo__full{font-family:var(--serif);font-size:17px;letter-spacing:.06em;font-weight:600;line-height:1.3}
.logo__stack{display:none;flex-direction:column;font-family:var(--serif);font-size:11px;line-height:1.35;letter-spacing:.04em}
.logo__stack em{font-style:normal}

/* ---------- Sidebar ---------- */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--side-w);
  background:var(--ink);color:#EFEDE8;
  display:flex;flex-direction:column;gap:26px;
  padding:26px 18px 22px;z-index:60;
  transition:width .24s var(--ease),padding .24s var(--ease);
  overflow-x:hidden;
}
.sidebar__logo{color:#F5F3EE;padding:4px 2px 2px;display:block}
.sidebar__nav{display:flex;flex-direction:column;gap:4px}
.side-link{
  position:relative;display:flex;align-items:center;gap:12px;
  min-height:46px;padding:10px 12px;border-radius:var(--r-btn);
  font-size:14.5px;letter-spacing:.04em;color:rgba(239,237,232,.78);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.side-link i{width:20px;text-align:center;font-size:15px;flex:0 0 20px}
.side-link:hover{background:rgba(228,196,137,.1);color:#F5F3EE}
.side-link.is-active{background:rgba(228,196,137,.14);color:#FFFFFF}
.side-link.is-active::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;
  background:var(--gold);border-radius:0 2px 2px 0;
}
.sidebar__cta{margin-top:auto}
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  color:#F5F3EE;font-size:18px;align-items:center;justify-content:center;
  border:1px solid rgba(228,196,137,.3);
}
.drawer{display:none}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;letter-spacing:.04em;font-weight:500;
  border:1px solid transparent;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn--primary{background:var(--ink);color:#F5F3EE}
.btn--primary:hover{background:var(--ink-2);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn--gold{background:var(--gold);color:#1A1206}
.btn--gold:hover{background:#CE9A4E;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn--ghost{background:transparent;border-color:rgba(228,196,137,.5);color:#F3F1EC}
.btn--ghost:hover{background:rgba(228,196,137,.14);border-color:var(--gold-soft)}
.btn--outline{background:transparent;border-color:var(--line);color:var(--text)}
.btn--outline:hover{border-color:var(--gold);color:var(--gold);transform:translateY(-1px)}
.btn--block{width:100%}

/* ---------- Main ---------- */
.site-main{margin-left:var(--side-w);min-height:100vh;transition:margin-left .24s var(--ease)}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section-title{font-family:var(--serif);font-size:clamp(1.6rem,3vw,2.4rem);line-height:1.25;letter-spacing:-.01em;font-weight:600}
.section-title .rule{display:block;width:44px;height:2px;background:var(--gold);margin-top:16px;border-radius:1px}
.section-lead{margin-top:16px;max-width:660px;color:var(--text-2);font-size:16px}

/* ---------- Hero ---------- */
.hero{
  position:relative;color:#F3F1EC;overflow:hidden;
  padding:104px 0 76px;
  background-image:linear-gradient(180deg,rgba(15,46,44,.82),rgba(15,46,44,.72)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.3;
  background-image:linear-gradient(rgba(228,196,137,.14) 1px,transparent 1px),linear-gradient(90deg,rgba(228,196,137,.14) 1px,transparent 1px);
  background-size:64px 64px;
}
.hero__inner{position:relative;z-index:2}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:.16em;color:var(--gold-soft);margin-bottom:20px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--gold);border-radius:1px}
.hero h1{
  font-family:var(--serif);font-weight:600;letter-spacing:-.02em;line-height:1.15;
  font-size:clamp(2.4rem,4.4vw,3.6rem);max-width:900px;
}
.hero__sub{margin-top:22px;max-width:640px;font-size:17px;line-height:1.85;color:rgba(243,241,236,.82)}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.anchor-bar{
  margin-top:48px;display:flex;flex-wrap:wrap;gap:10px;
  padding-top:24px;border-top:1px solid rgba(228,196,137,.28);
}
.anchor-bar a{
  display:inline-flex;align-items:center;min-height:40px;padding:0 16px;
  border:1px solid rgba(228,196,137,.32);border-radius:var(--r-btn);
  font-size:14px;color:rgba(243,241,236,.86);
  transition:background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.anchor-bar a:hover{background:rgba(228,196,137,.16);border-color:var(--gold);color:#fff}

/* ---------- Why ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.split p{color:var(--text-2);margin-top:18px;max-width:560px}
.split__figure{position:relative}
.split__figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border:1px solid var(--line);border-radius:var(--r-img);box-shadow:var(--sh-1)}
.split__tag{
  position:absolute;left:16px;bottom:16px;background:rgba(15,46,44,.9);color:#F3F1EC;
  font-size:13px;letter-spacing:.06em;padding:8px 14px;border-radius:var(--r-badge);
}
.point-list{margin-top:28px;border-top:1px solid var(--line)}
.point-list li{
  display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);
  font-size:15.5px;color:var(--text-2);
}
.point-list i{color:var(--gold);margin-top:6px;font-size:13px}

/* ---------- Flow (dark) ---------- */
.flow{
  position:relative;background:var(--ink);color:#EFEDE8;overflow:hidden;
}
.flow::before{
  content:"";position:absolute;inset:0;opacity:.28;
  background-image:linear-gradient(rgba(228,196,137,.1) 1px,transparent 1px),linear-gradient(90deg,rgba(228,196,137,.1) 1px,transparent 1px);
  background-size:56px 56px;
}
.flow .container{position:relative;z-index:2}
.flow .section-title{color:#F5F3EE}
.flow .section-lead{color:rgba(239,237,232,.75)}
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:56px}
.flow-step{border-top:2px solid var(--gold-soft);padding-top:22px}
.flow-step .idx{font-family:var(--num);font-size:30px;color:var(--gold-soft);letter-spacing:.02em;line-height:1}
.flow-step h3{font-family:var(--serif);font-size:1.2rem;margin-top:16px;color:#F5F3EE;font-weight:600}
.flow-step p{margin-top:12px;font-size:15px;line-height:1.85;color:rgba(239,237,232,.72)}
.flow-note{
  margin-top:48px;display:flex;flex-wrap:wrap;gap:16px;align-items:center;
  padding-top:26px;border-top:1px solid rgba(228,196,137,.24);
  font-size:14.5px;color:rgba(239,237,232,.72);
}
.flow-note strong{color:var(--gold-soft);font-weight:500}

/* ---------- Checklist ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:52px}
.check-card{
  display:flex;gap:18px;padding:24px 22px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
.check-card:hover{border-color:var(--gold-soft);box-shadow:var(--sh-2);background:#FFFDF9}
.check-card__body{flex:1;min-width:0}
.check-card h3{
  font-family:var(--serif);font-size:1.15rem;font-weight:600;margin-top:12px;
  transition:color .2s var(--ease);
}
.check-card:hover h3{color:var(--gold)}
.check-card p{margin-top:10px;font-size:15px;line-height:1.8;color:var(--text-2)}
.check-card__arrow{
  align-self:center;color:var(--muted);font-size:14px;flex:0 0 auto;
  transition:transform .22s var(--ease),color .22s var(--ease);
}
.check-card:hover .check-card__arrow{transform:translateX(4px);color:var(--gold)}
.badge{
  display:inline-block;padding:3px 9px;border-radius:var(--r-badge);
  font-size:12px;letter-spacing:.1em;line-height:1.6;
}
.badge--must{background:#F6E9E8;color:var(--err)}
.badge--rec{background:#F7EFE3;color:var(--warn)}
.badge--env{background:#E7F1EC;color:var(--ok)}
.badge--keep{background:#EDECE7;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq{max-width:820px;margin-top:48px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;text-align:left;
  font-family:var(--serif);font-size:1.125rem;font-weight:600;line-height:1.6;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--gold)}
.faq-q .mark{
  flex:0 0 26px;width:26px;height:26px;position:relative;color:var(--gold);
  transition:transform .26s var(--ease);
}
.faq-q .mark::before,.faq-q .mark::after{
  content:"";position:absolute;background:currentColor;border-radius:1px;
}
.faq-q .mark::before{left:4px;right:4px;top:12px;height:2px}
.faq-q .mark::after{top:4px;bottom:4px;left:12px;width:2px}
.faq-item.is-open .faq-q{color:var(--ink)}
.faq-item.is-open .faq-q .mark{transform:rotate(45deg)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .26s var(--ease);
}
.faq-a p{padding:0 44px 24px 0;font-size:15.5px;line-height:1.9;color:var(--text-2)}

/* ---------- CTA ---------- */
.cta{
  position:relative;background:var(--ink);color:#F3F1EC;overflow:hidden;padding:96px 0;
}
.cta::before{
  content:"";position:absolute;inset:0;opacity:.3;
  background-image:linear-gradient(rgba(228,196,137,.12) 1px,transparent 1px),linear-gradient(90deg,rgba(228,196,137,.12) 1px,transparent 1px);
  background-size:56px 56px;
}
.cta .container{position:relative;z-index:2}
.cta h2{font-family:var(--serif);font-size:clamp(1.6rem,3vw,2.3rem);font-weight:600;line-height:1.3;max-width:720px}
.cta p{margin-top:16px;max-width:620px;color:rgba(243,241,236,.78);font-size:16px}
.cta__actions{display:flex;flex-wrap:wrap;gap:16px;align-items:center;margin-top:34px}
.cta__link{font-size:15px;color:var(--gold-soft);border-bottom:1px solid rgba(228,196,137,.5);padding-bottom:2px}
.cta__link:hover{color:#fff;border-color:#fff}

/* ---------- Footer ---------- */
.footer{background:var(--ink);color:rgba(239,237,232,.78);padding:72px 0 110px;font-size:14.5px}
.footer__top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer__brand .logo__full{color:#F5F3EE;font-size:18px}
.footer__brand p{margin-top:16px;max-width:320px;line-height:1.85;color:rgba(239,237,232,.66)}
.footer h4{font-size:14px;letter-spacing:.06em;color:#F5F3EE;font-weight:600;margin-bottom:16px}
.footer__links li{margin-bottom:10px}
.footer__links a{transition:color .2s var(--ease)}
.footer__links a:hover{color:var(--gold-soft)}
.footer__contact li{display:flex;gap:10px;margin-bottom:12px;line-height:1.7;color:rgba(239,237,232,.66)}
.footer__contact i{color:var(--gold-soft);margin-top:6px;font-size:13px}
.footer__bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(228,196,137,.2);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(239,237,232,.56);
}

/* ---------- Sticky bar ---------- */
.sticky-bar{
  position:fixed;left:var(--side-w);right:0;bottom:0;height:64px;z-index:55;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:0 22px;background:#FFFDF9;border-top:1px solid var(--gold);
  box-shadow:0 -10px 30px -18px rgba(18,24,26,.4);
  transform:translateY(110%);
  transition:transform .24s var(--ease);
}
.sticky-bar.is-visible{transform:translateY(0)}
.sticky-bar__text{font-size:14.5px;color:var(--text-2)}
.sticky-bar__text strong{color:var(--ink);font-weight:600}
.sticky-bar__actions{display:flex;align-items:center;gap:16px}
.sticky-bar__link{font-size:14px;color:var(--gold);border-bottom:1px solid rgba(192,138,62,.45);padding-bottom:2px}
.sticky-bar__close{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-btn);color:var(--muted);border:1px solid var(--line);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.sticky-bar__close:hover{color:var(--ink);border-color:var(--gold-soft)}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media (max-width:1439px) and (min-width:1024px){
  :root{--side-w:88px}
  .sidebar{padding:22px 12px 20px;align-items:center;gap:20px}
  .sidebar:hover{width:240px;padding:26px 18px 22px;align-items:stretch}
  .logo__full{display:none}
  .logo__stack{display:flex}
  .sidebar:hover .logo__full{display:inline}
  .sidebar:hover .logo__stack{display:none}
  .side-link{justify-content:center;padding:10px 0}
  .side-link span{display:none}
  .sidebar:hover .side-link{justify-content:flex-start;padding:10px 12px}
  .sidebar:hover .side-link span{display:inline}
  .sidebar__cta .btn{padding:0;width:44px}
  .sidebar__cta .btn span{display:none}
  .sidebar:hover .sidebar__cta .btn{width:100%;padding:0 22px}
  .sidebar:hover .sidebar__cta .btn span{display:inline}
}

@media (max-width:1023px){
  :root{--side-w:0px}
  .sidebar{
    width:auto;right:0;bottom:auto;height:56px;
    flex-direction:row;align-items:center;justify-content:space-between;
    padding:0 16px;gap:12px;
  }
  .sidebar__nav,.sidebar__cta{display:none}
  .sidebar__logo{padding:0}
  .logo__full{font-size:15.5px}
  .menu-toggle{display:inline-flex}
  .site-main{padding-top:56px}
  .drawer{
    display:flex;flex-direction:column;gap:22px;
    position:fixed;top:0;left:0;bottom:0;width:280px;max-width:86vw;
    background:var(--ink);color:#EFEDE8;z-index:90;padding:20px 18px;
    transform:translateX(-104%);transition:transform .28s var(--ease);
  }
  .drawer.is-open{transform:none}
  .drawer__head{display:flex;align-items:center;justify-content:space-between;gap:12px}
  .drawer__close{
    width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
    border:1px solid rgba(228,196,137,.3);border-radius:var(--r-btn);color:#F5F3EE;font-size:17px;
  }
  .overlay{
    position:fixed;inset:0;background:rgba(18,24,26,.5);z-index:80;
    opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);
  }
  .overlay.is-open{opacity:1;visibility:visible}
  .section{padding:72px 0}
  .split{grid-template-columns:1fr;gap:34px}
  .flow-grid{grid-template-columns:repeat(2,1fr);gap:28px;margin-top:44px}
  .check-grid{grid-template-columns:1fr;margin-top:40px}
  .footer__top{grid-template-columns:1fr 1fr;gap:32px}
  .sticky-bar{left:0;height:58px;padding:0 14px;gap:10px}
  .sticky-bar__text{display:none}
  .sticky-bar__actions{margin-left:auto}
}

@media (max-width:768px){
  .container{padding:0 18px}
  .hero{padding:76px 0 60px}
  .hero__sub{font-size:16px}
  .flow-grid{grid-template-columns:1fr}
  .footer__top{grid-template-columns:1fr}
  .footer{padding:56px 0 120px}
  .cta{padding:72px 0}
  .faq-a p{padding-right:0}
}

@media (max-width:560px){
  body{font-size:15.5px}
  h1,h2,h3{letter-spacing:0}
  .hero h1{font-size:2rem}
  .section{padding:60px 0}
  .hero__actions .btn,.cta__actions .btn{width:100%}
  .anchor-bar a{flex:1 1 46%;justify-content:center}
  .check-card{padding:20px 18px;gap:14px}
  .sticky-bar__actions .btn{padding:0 16px;font-size:14px}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --paper:#F7F5F1;
  --card:#FFFFFF;
  --ink:#0F2E2C;
  --ink-2:#17433F;
  --gold:#C08A3E;
  --gold-2:#A9762F;
  --gold-soft:#E4C489;
  --text:#12181A;
  --text-2:#4A5658;
  --text-3:#8A9294;
  --line:#E3E1DB;
  --ok:#2F7D5B;
  --warn:#B9803A;
  --err:#B4453B;
  --r-card:10px;
  --r-img:6px;
  --r-btn:4px;
  --r-badge:2px;
  --sh-1:0 1px 2px rgba(18,24,26,.06);
  --sh-2:0 14px 32px -12px rgba(18,24,26,.18);
  --ease:cubic-bezier(.2,.8,.2,1);
  --side:240px;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  padding-bottom:84px;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:600;line-height:1.3;letter-spacing:-.01em;color:var(--text)}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px;border-radius:2px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ 侧边导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;
  width:var(--side);
  background:var(--ink);
  color:#DCE7E4;
  display:flex;flex-direction:column;
  padding:26px 16px 22px;
  z-index:60;
  transition:width 240ms var(--ease),transform 280ms var(--ease);
}
.sidebar__head{display:flex;align-items:center;justify-content:space-between;padding:0 6px}
.logo{display:inline-flex;align-items:center;gap:10px;min-width:0}
.logo__bar{width:2px;height:26px;background:var(--gold);border-radius:1px;flex:0 0 auto}
.logo__mark{display:flex;flex-direction:column;line-height:1.2;min-width:0}
.logo__full{
  font-family:var(--serif);
  font-size:18px;font-weight:600;letter-spacing:.03em;
  color:#F7F5F1;white-space:nowrap;
}
.logo__sub{font-size:11px;letter-spacing:.14em;color:#8FA8A3;white-space:nowrap;margin-top:2px}
.drawer-close{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border-radius:6px;color:#C6D6D3;font-size:16px;
}
.drawer-close:hover{background:rgba(255,255,255,.08);color:#fff}

.sidebar__tag{
  margin:26px 6px 0;
  font-size:12.5px;line-height:1.7;color:#7F9793;letter-spacing:.02em;
  border-top:1px solid rgba(228,196,137,.18);
  padding-top:16px;
}
.sidebar__nav{display:flex;flex-direction:column;gap:4px;margin-top:18px;flex:1}
.side-link{
  position:relative;display:flex;align-items:center;gap:12px;
  min-height:44px;padding:10px 12px;border-radius:6px;
  color:#B7C9C5;font-size:15px;letter-spacing:.01em;
  transition:background 200ms var(--ease),color 200ms var(--ease);
}
.side-link i{width:20px;text-align:center;font-size:15px;flex:0 0 20px}
.side-link span{white-space:nowrap}
.side-link:hover{background:rgba(255,255,255,.07);color:#FFFFFF}
.side-link.is-active{background:rgba(192,138,62,.16);color:#FFFFFF}
.side-link.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  background:var(--gold);border-radius:2px;
}
.side-cta{
  display:flex;align-items:center;justify-content:center;gap:9px;
  min-height:46px;padding:0 14px;margin-top:16px;
  background:var(--gold);color:#14100A;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.03em;
  transition:background 200ms var(--ease),transform 200ms var(--ease);
}
.side-cta:hover{background:var(--gold-2);transform:translateY(-1px)}
.side-cta span{white-space:nowrap}

/* ============ 顶部移动栏 ============ */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;
  background:var(--ink);z-index:70;align-items:center;justify-content:space-between;
  padding:0 12px 0 16px;border-bottom:1px solid rgba(228,196,137,.22);
}
.topbar .logo__full{font-size:16px}
.menu-btn{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  color:#E6EFEC;font-size:17px;border-radius:6px;
}
.menu-btn:hover{background:rgba(255,255,255,.08)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(18,24,26,.5);
  opacity:0;visibility:hidden;z-index:55;transition:opacity 260ms var(--ease),visibility 260ms var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ============ 主内容 ============ */
.main{margin-left:var(--side);transition:margin 240ms var(--ease)}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section-head{margin-bottom:44px;max-width:760px}
.section-head h2{font-size:clamp(1.6rem,3vw,2.4rem)}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.16em;color:var(--gold-2);
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--gold);border-radius:1px}

/* ============ 首屏 ============ */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--ink) url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  color:#F3F7F5;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(15,46,44,.78),rgba(15,46,44,.68));
}
.page-hero .container{position:relative;z-index:2;padding-top:70px;padding-bottom:66px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:#A9BDB9;margin-bottom:26px}
.crumb a{color:#C9D9D5;border-bottom:1px solid transparent;transition:border-color 200ms var(--ease),color 200ms var(--ease)}
.crumb a:hover{color:#fff;border-color:var(--gold)}
.crumb span.sep{color:#6E8681}
.crumb span.now{color:#E4C489}
.page-hero h1{
  font-size:clamp(2.1rem,4.6vw,3.5rem);
  line-height:1.15;letter-spacing:-.02em;color:#FFFFFF;max-width:16em;
}
.page-hero h1 em{font-style:normal;color:var(--gold-soft)}
.hero__sub{
  margin-top:22px;max-width:640px;font-size:17px;line-height:1.9;color:#CBDCD8;
}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero__points{
  display:flex;flex-wrap:wrap;gap:0 28px;margin-top:38px;
  border-top:1px solid rgba(228,196,137,.24);padding-top:20px;
}
.hero__points li{
  position:relative;font-size:14px;color:#B7CBC7;letter-spacing:.04em;
  padding-left:16px;
}
.hero__points li::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:6px;height:6px;border:1px solid var(--gold-soft);border-radius:50%;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.03em;
  transition:background 220ms var(--ease),color 220ms var(--ease),border-color 220ms var(--ease),transform 220ms var(--ease),box-shadow 220ms var(--ease);
  white-space:nowrap;
}
.btn--primary{background:var(--gold);color:#14100A}
.btn--primary:hover{background:var(--gold-2);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn--ghost{border:1px solid rgba(228,196,137,.55);color:#EFE4CE}
.btn--ghost:hover{border-color:var(--gold-soft);background:rgba(228,196,137,.12);transform:translateY(-1px)}
.btn--outline{border:1px solid var(--line);color:var(--text);background:var(--card)}
.btn--outline:hover{border-color:var(--gold);color:var(--gold-2);transform:translateY(-1px)}
.btn--sm{min-height:42px;padding:0 20px;font-size:14px}
.btn--block{width:100%}

/* ============ 锚点条 ============ */
.anchor-wrap{background:var(--card);border-bottom:1px solid var(--line);position:relative;z-index:3}
.anchor-bar{display:flex;flex-wrap:wrap;gap:10px;padding:16px 0}
.anchor-bar a{
  display:inline-flex;align-items:center;gap:8px;min-height:40px;padding:0 16px;
  border:1px solid var(--line);border-radius:999px;
  font-size:14px;color:var(--text-2);background:var(--paper);
  transition:border-color 200ms var(--ease),color 200ms var(--ease),background 200ms var(--ease);
}
.anchor-bar a::before{content:"";width:5px;height:5px;background:var(--gold);border-radius:50%}
.anchor-bar a:hover{border-color:var(--gold);color:var(--gold-2);background:#FFFDF8}

/* ============ 通用卡片 ============ */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);transition:box-shadow 240ms var(--ease),border-color 240ms var(--ease),background 240ms var(--ease);
}
.badge{
  display:inline-flex;align-items:center;
  padding:2px 9px;border-radius:var(--r-badge);
  font-size:12px;letter-spacing:.08em;
  background:rgba(192,138,62,.12);color:var(--gold-2);
  border:1px solid rgba(192,138,62,.28);
}
.badge--ink{background:rgba(15,46,44,.08);color:var(--ink);border-color:rgba(15,46,44,.18)}
.badge--ok{background:rgba(47,125,91,.1);color:var(--ok);border-color:rgba(47,125,91,.24)}

/* ============ 图文说明块 ============ */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.split--reverse .split__media{order:2}
.split__media{position:relative}
.split__media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-img);border:1px solid var(--line);box-shadow:var(--sh-1);
  transition:transform 320ms var(--ease);
}
.split__media:hover img{transform:scale(1.03)}
.split__media .tagfloat{
  position:absolute;left:16px;bottom:16px;
  background:rgba(15,46,44,.92);color:#EFE4CE;
  font-size:12.5px;letter-spacing:.06em;padding:7px 13px;border-radius:var(--r-badge);
  border:1px solid rgba(228,196,137,.35);
}
.split__body h2{font-size:clamp(1.5rem,2.6vw,2.1rem)}
.split__body > p{margin-top:16px;color:var(--text-2)}
.split__body p + p{margin-top:14px}

.steps{margin-top:32px;display:flex;flex-direction:column;gap:0}
.step{
  display:grid;grid-template-columns:52px 1fr;gap:18px;
  padding:20px 0;border-top:1px solid var(--line);
}
.step:last-child{border-bottom:1px solid var(--line)}
.step__num{
  font-family:var(--serif);font-size:22px;color:var(--gold);line-height:1.2;
  letter-spacing:.02em;
}
.step__body h3{font-size:17px;font-family:var(--sans);font-weight:600;letter-spacing:0}
.step__body p{margin-top:6px;font-size:15px;color:var(--text-2);line-height:1.85}

/* ============ 指标条 ============ */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
}
.metric{padding:34px 26px;border-right:1px solid var(--line);transition:background 240ms var(--ease)}
.metric:last-child{border-right:0}
.metric:hover{background:#FCFAF6}
.metric__num{
  font-family:var(--serif);font-size:clamp(2rem,3vw,2.6rem);
  color:var(--ink);line-height:1;letter-spacing:-.01em;
}
.metric__num small{font-size:.5em;color:var(--gold);margin-left:4px;letter-spacing:.06em}
.metric__label{margin-top:12px;font-size:14px;color:var(--text);font-weight:600}
.metric__desc{margin-top:6px;font-size:13.5px;color:var(--text-3);line-height:1.75}

/* ============ 入口索引卡 ============ */
.index-list{display:flex;flex-direction:column;gap:14px}
.index-card{
  position:relative;display:grid;grid-template-columns:120px 1fr 44px;
  align-items:center;gap:22px;
  padding:24px 26px 24px 30px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:box-shadow 240ms var(--ease),border-color 240ms var(--ease),background 240ms var(--ease);
}
.index-card::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;
  background:var(--gold);border-radius:2px;opacity:0;
  transition:opacity 240ms var(--ease);
}
.index-card:hover{border-color:rgba(192,138,62,.5);box-shadow:var(--sh-2);background:#FFFDF9}
.index-card:hover::before{opacity:1}
.index-card__mark{display:flex;flex-direction:column;gap:8px;align-items:flex-start}
.index-card__body h3{font-size:18px;font-weight:600}
.index-card__body p{margin-top:8px;font-size:15px;color:var(--text-2);line-height:1.85}
.index-card__arrow{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:50%;color:var(--text-3);font-size:14px;
  transition:transform 240ms var(--ease),color 240ms var(--ease),border-color 240ms var(--ease);
}
.index-card:hover .index-card__arrow{transform:translateX(4px);color:var(--gold-2);border-color:var(--gold)}

/* ============ FAQ ============ */
.faq{max-width:820px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden}
.faq__item + .faq__item{border-top:1px solid var(--line)}
.faq__q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 26px;text-align:left;
  font-family:var(--serif);font-size:18px;font-weight:600;color:var(--text);
  transition:color 200ms var(--ease),background 200ms var(--ease);
}
.faq__q:hover{color:var(--gold-2);background:#FCFAF6}
.faq__icon{
  position:relative;flex:0 0 20px;width:20px;height:20px;
  transition:transform 260ms var(--ease);
}
.faq__icon::before,.faq__icon::after{
  content:"";position:absolute;background:var(--gold);border-radius:1px;
}
.faq__icon::before{left:0;top:9px;width:20px;height:2px}
.faq__icon::after{left:9px;top:0;width:2px;height:20px;transition:opacity 200ms var(--ease)}
.faq__item.is-open .faq__icon{transform:rotate(90deg)}
.faq__item.is-open .faq__icon::after{opacity:0}
.faq__a{max-height:0;overflow:hidden;transition:max-height 260ms var(--ease)}
.faq__a p{padding:0 26px 24px;font-size:15.5px;color:var(--text-2);line-height:1.9;max-width:62em}

/* ============ CTA ============ */
.cta-block{
  position:relative;overflow:hidden;background:var(--ink);color:#EAF2EF;
  padding:96px 0;
}
.cta-block::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(228,196,137,.07) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(228,196,137,.07) 1px,transparent 1px);
  background-size:52px 52px;
  opacity:.7;
}
.cta-block .container{position:relative;z-index:2}
.cta-block h2{font-size:clamp(1.6rem,3vw,2.4rem);color:#FFFFFF;max-width:20em}
.cta-block p{margin-top:16px;max-width:620px;color:#B9CCC8;font-size:16px}
.cta-block .btn{margin-top:32px}
.cta-block .cta-note{margin-top:18px;font-size:13.5px;color:#8FA8A3;letter-spacing:.04em}

/* ============ 页脚 ============ */
.footer{background:var(--ink);color:#B9CCC8;padding:72px 0 26px;border-top:1px solid rgba(228,196,137,.2)}
.footer__top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer__brand p{margin-top:18px;font-size:14.5px;line-height:1.85;color:#93A9A5;max-width:34em}
.footer h4{
  font-size:14px;font-family:var(--sans);font-weight:600;
  letter-spacing:.06em;color:#E4C489;margin-bottom:18px;
}
.footer__links li + li{margin-top:11px}
.footer__links a{font-size:14.5px;color:#B9CCC8;transition:color 200ms var(--ease)}
.footer__links a:hover{color:#FFFFFF}
.footer__contact li{display:flex;gap:10px;font-size:14px;color:#9DB3AF;line-height:1.75}
.footer__contact li + li{margin-top:12px}
.footer__contact i{margin-top:6px;color:var(--gold)}
.footer__bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(228,196,137,.18);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:#7F9793;letter-spacing:.04em;
}

/* ============ 底部转化条 ============ */
.convert-bar{
  position:fixed;left:var(--side);right:0;bottom:0;z-index:58;
  background:rgba(15,46,44,.97);
  border-top:1px solid var(--gold);
  transform:translateY(100%);
  transition:transform 240ms var(--ease);
}
.convert-bar.is-visible{transform:translateY(0)}
.convert-bar__inner{
  max-width:1200px;margin:0 auto;padding:0 24px;
  min-height:64px;display:flex;align-items:center;gap:20px;
}
.convert-bar__text{flex:1;font-size:14.5px;color:#CBDCD8;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.convert-bar__actions{display:flex;align-items:center;gap:16px}
.convert-bar__link{font-size:14px;color:#E4C489;border-bottom:1px solid rgba(228,196,137,.5);transition:color 200ms var(--ease),border-color 200ms var(--ease)}
.convert-bar__link:hover{color:#fff;border-color:#fff}
.convert-bar__close{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  color:#9DB3AF;border-radius:6px;font-size:15px;
}
.convert-bar__close:hover{background:rgba(255,255,255,.08);color:#fff}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(16px)}
.reveal.is-in{opacity:1;transform:none;transition:opacity 520ms var(--ease),transform 520ms var(--ease)}
.reveal.is-in:nth-child(2){transition-delay:60ms}
.reveal.is-in:nth-child(3){transition-delay:120ms}
.reveal.is-in:nth-child(4){transition-delay:180ms}

/* ============ 断点 ============ */
@media (max-width:1439px) and (min-width:1024px){
  :root{--side:88px}
  .sidebar{width:88px;padding-left:12px;padding-right:12px;overflow:hidden}
  .sidebar:hover{width:240px;box-shadow:var(--sh-2)}
  .sidebar__tag{opacity:0;transition:opacity 180ms var(--ease)}
  .sidebar:hover .sidebar__tag{opacity:1}
  .side-link span,.side-cta span,.logo__full,.logo__sub{opacity:0;transition:opacity 180ms var(--ease)}
  .sidebar:hover .side-link span,
  .sidebar:hover .side-cta span,
  .sidebar:hover .logo__full,
  .sidebar:hover .logo__sub{opacity:1}
  .side-link{justify-content:flex-start;gap:16px}
  .logo{width:100%}
}

@media (max-width:1023px){
  :root{--side:0px}
  body{padding-bottom:72px}
  .sidebar{
    width:280px;padding:22px 16px;
    transform:translateX(-100%);
  }
  .sidebar.is-open{transform:translateX(0);box-shadow:var(--sh-2)}
  .sidebar .side-link span,
  .sidebar .side-cta span,
  .sidebar .logo__full,
  .sidebar .logo__sub,
  .sidebar .sidebar__tag{opacity:1}
  .drawer-close{display:flex}
  .topbar{display:flex}
  .main{margin-left:0;padding-top:56px}
  .convert-bar{left:0}
  .convert-bar__inner{min-height:56px;padding:0 14px;gap:12px}
  .convert-bar__text{font-size:13.5px}
  .split{grid-template-columns:1fr;gap:32px}
  .split--reverse .split__media{order:0}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .metric:nth-child(2){border-right:0}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line)}
  .footer__top{grid-template-columns:1fr 1fr;gap:34px}
  .section{padding:72px 0}
  .section--tight{padding:56px 0}
  .cta-block{padding:72px 0}
}

@media (max-width:768px){
  body{font-size:16px}
  .index-card{grid-template-columns:1fr 44px;gap:14px;padding:22px 18px 22px 22px}
  .index-card__mark{flex-direction:row;align-items:center;gap:8px;grid-column:1/-1}
  .split__body h2{font-size:1.5rem}
  .metrics{grid-template-columns:1fr}
  .metric{border-right:0;border-bottom:1px solid var(--line);padding:26px 22px}
  .metric:last-child{border-bottom:0}
  .footer__top{grid-template-columns:1fr;gap:30px}
  .faq__q{font-size:16.5px;padding:18px 18px}
  .faq__a p{padding:0 18px 20px}
  .anchor-bar{gap:8px}
  .anchor-bar a{font-size:13px;padding:0 13px;min-height:38px}
  .convert-bar__link{display:none}
}

@media (max-width:560px){
  .container{padding:0 18px}
  .page-hero .container{padding-top:48px;padding-bottom:48px}
  .hero__actions .btn{width:100%}
  .hero__points{flex-direction:column;gap:10px}
  .cta-block .btn{width:100%}
  .step{grid-template-columns:40px 1fr;gap:14px}
  .step__num{font-size:19px}
}

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

/* roulang page: category3 */
:root{
  --paper:#F7F5F1;
  --card:#FFFFFF;
  --ink:#0F2E2C;
  --ink-2:#17433F;
  --brass:#C08A3E;
  --brass-2:#A9762F;
  --brass-light:#E4C489;
  --text:#12181A;
  --text-2:#4A5658;
  --muted:#8A9294;
  --line:#E3E1DB;
  --ok:#2F7D5B;
  --warn:#B9803A;
  --err:#B4453B;
  --r-card:10px;
  --r-img:6px;
  --r-btn:4px;
  --r-badge:2px;
  --sh-1:0 1px 2px rgba(18,24,26,.06);
  --sh-2:0 14px 32px -12px rgba(18,24,26,.18);
  --ease:cubic-bezier(.2,.8,.2,1);
  --sidebar-w:240px;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,"Times New Roman",serif;
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.9;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea{font:inherit}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:600;line-height:1.25;letter-spacing:-.01em}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brass);outline-offset:2px}
::selection{background:rgba(192,138,62,.28)}

.container{max-width:1160px;margin:0 auto;padding:0 40px}

/* ---------- 侧栏 App Shell ---------- */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--ink);
  color:#E6E4DE;
  display:flex;
  flex-direction:column;
  padding:28px 20px 24px;
  z-index:80;
  transition:width .28s var(--ease),transform .28s var(--ease);
}
.logo{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-serif)}
.logo__bar{width:2px;height:24px;background:var(--brass);display:block;flex:none}
.logo__mark{display:block}
.logo__full{font-size:17px;font-weight:600;letter-spacing:.08em;color:#F3F1EB;line-height:1.3}
.sidebar__nav{display:flex;flex-direction:column;gap:4px;margin-top:38px}
.side-link{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  min-height:46px;
  padding:11px 12px;
  border-radius:6px;
  color:#C4CCC7;
  font-size:15px;
  transition:background .22s var(--ease),color .22s var(--ease);
}
.side-link i{width:18px;text-align:center;font-size:15px;flex:none}
.side-link span{white-space:nowrap}
.side-link:hover{background:rgba(255,255,255,.07);color:#FFFFFF}
.side-link.is-active{background:rgba(255,255,255,.09);color:#FFFFFF}
.side-link.is-active::before{
  content:"";position:absolute;left:-20px;top:9px;bottom:9px;width:3px;background:var(--brass);border-radius:0 2px 2px 0;
}
.sidebar__cta{
  margin-top:auto;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;
  flex-direction:column;
  gap:12px;
}
.sidebar__cta .btn{width:100%}
.sidebar__cta p{font-size:13px;color:#9AA5A0;letter-spacing:.04em;margin:0}

/* ---------- 顶部移动栏 ---------- */
.topbar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:56px;
  background:var(--ink);
  color:#F3F1EB;
  align-items:center;
  justify-content:space-between;
  padding:0 16px;
  z-index:90;
}
.topbar .logo__full{font-size:15px}
.topbar__toggle{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--brass-light);
  font-size:18px;
  border-radius:6px;
  transition:background .2s var(--ease);
}
.topbar__toggle:hover{background:rgba(255,255,255,.1)}
.scrim{
  position:fixed;inset:0;
  background:rgba(18,24,26,.5);
  opacity:0;visibility:hidden;
  transition:opacity .26s var(--ease),visibility .26s var(--ease);
  z-index:75;
}
.scrim.is-open{opacity:1;visibility:visible}
.drawer-close{display:none}

/* ---------- 主体 ---------- */
.main{
  margin-left:var(--sidebar-w);
  min-height:100vh;
  transition:margin-left .28s var(--ease);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 22px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  letter-spacing:.02em;
  white-space:nowrap;
  cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn i{font-size:13px}
.btn--primary{background:var(--brass);color:#12181A}
.btn--primary:hover{background:var(--brass-2);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn--ghost{background:transparent;color:#F3F1EB;border-color:rgba(255,255,255,.34)}
.btn--ghost:hover{border-color:var(--brass-light);background:rgba(255,255,255,.07);color:#FFFFFF;transform:translateY(-1px)}
.btn--outline{background:#FFFFFF;color:var(--ink);border-color:var(--line)}
.btn--outline:hover{border-color:var(--brass);transform:translateY(-1px);box-shadow:var(--sh-1)}
.btn--sm{padding:9px 16px;font-size:14px}
.btn--block{width:100%}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--ink);color:#FFFFFF;padding:118px 0 88px}
.hero__bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.34}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(15,46,44,.94) 0%,rgba(15,46,44,.7) 58%,rgba(15,46,44,.44) 100%);
}
.hero__inner{position:relative;z-index:2;max-width:800px}
.hero__eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;
  color:var(--brass-light);
  border:1px solid rgba(228,196,137,.42);
  border-radius:var(--r-badge);
  padding:5px 12px;
  margin-bottom:22px;
}
.hero h1{
  font-size:clamp(2.1rem,4.4vw,3.4rem);
  line-height:1.15;
  letter-spacing:-.02em;
  margin-bottom:20px;
}
.hero__sub{font-size:17.5px;color:#D6DDD8;max-width:640px;margin-bottom:32px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:40px}
.hero__notes{
  display:flex;flex-wrap:wrap;gap:0;
  border-top:1px solid rgba(255,255,255,.16);
  padding-top:18px;
}
.hero__notes li{
  position:relative;
  font-size:14px;
  letter-spacing:.06em;
  color:#AEBAB4;
  padding:0 22px;
}
.hero__notes li:first-child{padding-left:0}
.hero__notes li + li::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:1px;height:14px;background:rgba(255,255,255,.22);
}

/* ---------- 锚点条 ---------- */
.anchor-bar{background:#FFFFFF;border-bottom:1px solid var(--line);position:relative;z-index:5}
.anchor-bar__inner{
  display:flex;align-items:center;
  gap:6px;
  padding-top:13px;padding-bottom:13px;
  overflow-x:auto;
  scrollbar-width:none;
}
.anchor-bar__inner::-webkit-scrollbar{display:none}
.anchor-bar__label{
  flex:none;
  font-size:13px;letter-spacing:.08em;color:var(--muted);
  padding-right:16px;margin-right:10px;
  border-right:1px solid var(--line);
}
.anchor-bar a{
  flex:none;
  font-size:14px;
  color:var(--text-2);
  padding:8px 15px;
  min-height:38px;
  display:inline-flex;align-items:center;
  border:1px solid transparent;
  border-radius:var(--r-btn);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.anchor-bar a:hover{color:var(--ink);border-color:var(--brass-light);background:#FBF8F3}

/* ---------- 通用板块 ---------- */
.section{padding:92px 0}
.section--tight{padding:72px 0}
.section--paper{background:#FFFFFF;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section__head{max-width:720px;margin-bottom:46px}
.section__eyebrow{
  display:block;
  font-size:13px;letter-spacing:.14em;color:var(--brass-2);
  margin-bottom:14px;
}
.section__title{font-size:clamp(1.6rem,3vw,2.3rem);margin-bottom:16px}
.section__title::after{
  content:"";display:block;width:52px;height:2px;background:var(--brass);margin-top:16px;border-radius:2px;
}
.section__desc{color:var(--text-2);font-size:16px;max-width:660px}
.section__foot{margin-top:38px}

/* ---------- 现象索引卡 ---------- */
.index-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.index-card{
  grid-column:span 4;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:26px;
  display:flex;
  flex-direction:column;
  gap:12px;
  transition:border-color .24s var(--ease),background .24s var(--ease),box-shadow .24s var(--ease);
}
.index-card:hover{border-color:var(--brass);background:#FDFAF5;box-shadow:var(--sh-2)}
.index-card h3{font-size:1.15rem;line-height:1.45}
.index-card p{color:var(--text-2);font-size:15px;margin:0}
.index-card__more{
  margin-top:auto;
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--brass-2);
}
.index-card__more i{transition:transform .24s var(--ease)}
.index-card:hover .index-card__more i{transform:translateX(4px)}
.index-card--lead{
  grid-column:span 8;
  padding:0;
  flex-direction:row;
  align-items:stretch;
  overflow:hidden;
}
.index-card--lead .index-card__media{flex:0 0 42%;overflow:hidden;background:var(--ink)}
.index-card--lead .index-card__media img{
  width:100%;height:100%;object-fit:cover;
  border-radius:0;
  transition:transform .32s var(--ease);
}
.index-card--lead:hover .index-card__media img{transform:scale(1.03)}
.index-card--lead .index-card__body{padding:30px 30px 30px 28px;display:flex;flex-direction:column;gap:12px;flex:1}
.badge{
  display:inline-flex;align-items:center;
  align-self:flex-start;
  font-size:12px;font-weight:600;letter-spacing:.08em;
  color:var(--brass-2);
  background:rgba(192,138,62,.1);
  border:1px solid rgba(192,138,62,.3);
  border-radius:var(--r-badge);
  padding:3px 9px;
}
.badge--ok{color:var(--ok);background:rgba(47,125,91,.09);border-color:rgba(47,125,91,.28)}
.badge--warn{color:var(--warn);background:rgba(185,128,58,.1);border-color:rgba(185,128,58,.3)}

/* ---------- 图文 + 步骤 ---------- */
.split{display:grid;grid-template-columns:1.02fr 1fr;gap:60px;align-items:center}
.split__media{
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  background:var(--ink);
}
.split__media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .32s var(--ease)}
.split__media:hover img{transform:scale(1.03)}
.split__figcaption{font-size:13px;color:var(--muted);margin-top:12px}
.steps{display:flex;flex-direction:column;gap:26px;margin-top:32px}
.step{display:flex;gap:20px;align-items:flex-start}
.step__num{
  flex:none;
  font-family:var(--font-serif);
  font-size:20px;
  font-weight:600;
  color:var(--brass);
  letter-spacing:.06em;
  line-height:1.4;
  min-width:38px;
  border-top:2px solid var(--brass-light);
  padding-top:8px;
}
.step__body h3{font-size:1.1rem;margin-bottom:8px}
.step__body p{color:var(--text-2);font-size:15px;margin:0}

/* ---------- 要点清单 ---------- */
.check-list{display:flex;flex-direction:column;gap:14px;margin-top:8px}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;color:var(--text-2);
}
.check-list i{color:var(--brass);font-size:14px;margin-top:6px;flex:none}

/* ---------- FAQ ---------- */
.faq{max-width:820px;margin:0 auto;border-top:1px solid var(--line)}
.faq__item{border-bottom:1px solid var(--line)}
.faq__q{
  width:100%;
  display:flex;align-items:flex-start;justify-content:space-between;gap:24px;
  padding:24px 0;
  text-align:left;
  font-family:var(--font-serif);
  font-size:18px;
  font-weight:600;
  color:var(--text);
  line-height:1.6;
  min-height:44px;
  transition:color .22s var(--ease);
}
.faq__q:hover{color:var(--brass-2)}
.faq__icon{
  flex:none;
  color:var(--brass);
  font-size:15px;
  margin-top:6px;
  transition:transform .26s var(--ease);
}
.faq__item.is-open .faq__icon{transform:rotate(45deg)}
.faq__a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
.faq__a p{padding:0 32px 24px 0;color:var(--text-2);font-size:15.5px}

/* ---------- 反馈 ---------- */
.feedback-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:56px;align-items:start}
.form-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:32px;
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:20px}
.field label{font-size:14px;letter-spacing:.05em;color:var(--text-2)}
.field input,.field textarea{
  width:100%;
  min-height:44px;
  padding:11px 14px;
  background:#FFFFFF;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  color:var(--text);
  font-size:15px;
  line-height:1.6;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{min-height:120px;resize:vertical}
.field input:focus,.field textarea:focus{
  outline:none;
  border-color:var(--brass);
  box-shadow:0 0 0 2px rgba(192,138,62,.22);
}
.field__hint{font-size:12.5px;color:var(--muted);letter-spacing:.02em}
.form-note{
  display:none;
  margin-top:18px;
  padding:12px 16px;
  border:1px solid rgba(47,125,91,.32);
  background:rgba(47,125,91,.08);
  color:var(--ok);
  border-radius:var(--r-btn);
  font-size:14px;
}
.form-note.is-visible{display:block}

/* ---------- CTA ---------- */
.cta{position:relative;overflow:hidden;background:var(--ink);color:#FFFFFF;padding:96px 0}
.cta::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:46px 46px;
}
.cta__inner{position:relative;z-index:2;max-width:700px}
.cta h2{font-size:clamp(1.7rem,3.2vw,2.4rem);margin-bottom:18px}
.cta p{color:#C9D2CD;font-size:16.5px;margin-bottom:32px}
.cta__actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.footer{background:var(--ink);color:#C9D2CD;padding:76px 0 150px;border-top:1px solid rgba(255,255,255,.08)}
.footer__top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:44px}
.footer__brand .logo{margin-bottom:18px}
.footer__brand p{font-size:14px;color:#9FAAA5;max-width:300px;line-height:1.9}
.footer h4{
  font-size:14px;letter-spacing:.08em;color:#F3F1EB;margin-bottom:18px;font-weight:600;
}
.footer__links{display:flex;flex-direction:column;gap:12px}
.footer__links a{font-size:14px;color:#A9B4AF;transition:color .2s var(--ease),padding-left .2s var(--ease)}
.footer__links a:hover{color:var(--brass-light);padding-left:4px}
.footer__contact{display:flex;flex-direction:column;gap:14px}
.footer__contact li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:#A9B4AF}
.footer__contact i{color:var(--brass);margin-top:5px;flex:none;font-size:13px}
.footer__bottom{
  margin-top:56px;padding-top:24px;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8A9490;letter-spacing:.04em;
}

/* ---------- 底部转化条 ---------- */
.convert-bar{
  position:fixed;
  left:var(--sidebar-w);right:0;bottom:0;
  height:64px;
  background:#FFFFFF;
  border-top:1px solid var(--brass-light);
  box-shadow:0 -6px 20px -14px rgba(18,24,26,.35);
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:0 28px;
  transform:translateY(100%);
  transition:transform .24s var(--ease);
  z-index:70;
}
.convert-bar.is-visible{transform:translateY(0)}
.convert-bar.is-closed{display:none}
.convert-bar__text{font-size:14.5px;color:var(--text-2);letter-spacing:.02em}
.convert-bar__actions{display:flex;align-items:center;gap:16px;flex:none}
.convert-bar__link{
  font-size:14px;color:var(--ink);font-weight:600;
  border-bottom:1px solid var(--brass-light);
  padding-bottom:2px;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.convert-bar__link:hover{color:var(--brass-2);border-color:var(--brass)}
.convert-bar__close{
  width:44px;height:44px;flex:none;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--muted);
  border-radius:var(--r-btn);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.convert-bar__close:hover{background:#F3F0EA;color:var(--ink)}

/* ---------- 动效 ---------- */
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .52s var(--ease),transform .52s var(--ease)}
.js .reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1439px){
  :root{--sidebar-w:88px}
  .sidebar{padding:24px 14px 20px;align-items:center}
  .sidebar__logo{display:flex;justify-content:center}
  .sidebar .logo{flex-direction:column;gap:8px}
  .sidebar .logo__full{font-size:13px;letter-spacing:.06em;text-align:center;max-width:56px;line-height:1.35}
  .sidebar .side-link{justify-content:center;padding:12px 0;gap:0}
  .sidebar .side-link span{display:none}
  .sidebar .side-link.is-active::before{left:-14px}
  .sidebar .side-link:hover::after,
  .sidebar .side-link:focus-visible::after{
    content:attr(data-label);
    position:absolute;
    left:64px;
    top:50%;
    transform:translateY(-50%);
    background:var(--ink-2);
    color:#F3F1EB;
    font-size:13px;
    letter-spacing:.04em;
    padding:6px 12px;
    border-radius:var(--r-btn);
    white-space:nowrap;
    box-shadow:var(--sh-2);
    z-index:5;
  }
  .sidebar__cta{border-top:1px solid rgba(255,255,255,.14);width:100%;padding-top:18px}
  .sidebar__cta p{display:none}
  .sidebar__cta .btn{padding:12px 0;font-size:13px}
  .sidebar__cta .btn span{display:none}
  .sidebar__cta .btn i{font-size:15px}
}
@media (max-width:1199px){
  .footer__top{grid-template-columns:1.4fr 1fr 1fr;gap:36px}
  .footer__contact-block{grid-column:span 3}
  .split{gap:44px}
  .feedback-grid{gap:40px}
}
@media (max-width:1023px){
  :root{--sidebar-w:0px}
  .topbar{display:flex}
  .sidebar{
    width:280px;
    padding:22px 18px;
    align-items:stretch;
    transform:translateX(-100%);
    box-shadow:var(--sh-2);
  }
  .sidebar.is-open{transform:translateX(0)}
  .sidebar .logo{flex-direction:row;gap:10px}
  .sidebar .logo__full{font-size:16px;text-align:left;max-width:none}
  .sidebar .side-link{justify-content:flex-start;padding:12px;gap:12px}
  .sidebar .side-link span{display:inline}
  .sidebar .side-link.is-active::before{left:-18px}
  .sidebar .side-link:hover::after{display:none}
  .sidebar__cta p{display:block}
  .sidebar__cta .btn span{display:inline}
  .drawer-close{
    display:inline-flex;align-items:center;justify-content:center;
    width:44px;height:44px;margin-left:auto;
    color:#C4CCC7;border-radius:6px;
    transition:background .2s var(--ease),color .2s var(--ease);
  }
  .drawer-close:hover{background:rgba(255,255,255,.1);color:#fff}
  .sidebar__top{display:flex;align-items:center;gap:12px}
  .main{margin-left:0;padding-top:56px}
  .convert-bar{left:0}
  .hero{padding:92px 0 64px}
  .split{grid-template-columns:1fr;gap:36px}
  .index-card--lead{grid-column:span 12;flex-direction:column}
  .index-card--lead .index-card__media{flex:none;aspect-ratio:16/9}
  .index-card{grid-column:span 6}
  .feedback-grid{grid-template-columns:1fr;gap:36px}
  .footer{padding-bottom:130px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 22px}
  .section{padding:64px 0}
  .section--tight{padding:52px 0}
  .index-grid{gap:18px}
  .index-card{grid-column:span 12;padding:22px}
  .index-card--lead .index-card__body{padding:24px 22px}
  .hero__notes li{padding:0 14px;font-size:13px}
  .hero__notes{gap:0}
  .hero__actions{gap:10px}
  .hero__actions .btn{flex:1 1 auto}
  .cta{padding:68px 0}
  .footer__top{grid-template-columns:1fr;gap:34px}
  .footer__contact-block{grid-column:span 1}
  .footer__bottom{flex-direction:column;gap:8px}
  .convert-bar{height:56px;padding:0 14px;gap:10px}
  .convert-bar__text{display:none}
  .convert-bar__actions{gap:10px;width:100%;justify-content:space-between}
  .form-card{padding:24px 20px}
  .form-row{grid-template-columns:1fr;gap:0}
  .faq__q{font-size:16.5px;padding:20px 0}
  .faq__a p{padding-right:8px}
}
@media (max-width:559px){
  .hero h1{font-size:1.85rem}
  .hero__sub{font-size:16px}
  .hero__actions .btn{width:100%}
  .section__title{font-size:1.5rem}
  .btn{padding:12px 18px;font-size:14.5px}
  .convert-bar .btn{padding:10px 14px;font-size:14px}
  .footer{padding:60px 0 140px}
}
@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}
}