/* roulang page: index */
:root{
  --ink:#17423C;
  --ink-light:#1F5A50;
  --orange:#E2603C;
  --gold:#D8A84E;
  --bg:#F6F4EF;
  --bg-alt:#E9EFEC;
  --card:#FFFFFF;
  --text:#14211F;
  --muted:#5E6B68;
  --line:rgba(20,33,31,.10);
  --r-lg:20px;
  --r-md:14px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,33,31,.04),0 8px 24px rgba(20,33,31,.06);
  --sh-2:0 24px 60px -24px rgba(20,33,31,.28);
  --sh-focus:0 0 0 4px rgba(226,96,60,.18);
  --serif:"Noto Serif SC","Source Han Serif SC",Georgia,"Times New Roman",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease,transform .2s ease,background-color .2s ease,border-color .2s ease}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;line-height:1.25;letter-spacing:-.01em;margin:0;color:var(--text)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- 布局容器 ---------- */
.wrap{max-width:1200px;margin:0 auto;padding:0 32px;width:100%}
.section{padding:96px 0;background:var(--bg)}
.section-alt{background:var(--bg-alt)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:48px}
.section-title{font-size:clamp(24px,3vw,36px)}
.section-sub{margin-top:12px;color:var(--muted);font-size:16px;line-height:1.8;max-width:640px}
.grid{display:grid;gap:28px}
.split-hero{grid-template-columns:7fr 5fr}
.split-8-4{grid-template-columns:8fr 4fr}
.split-5-7{grid-template-columns:5fr 7fr}
.shot-slide{grid-template-columns:6fr 5fr;gap:40px;align-items:center}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{position:sticky;top:16px;z-index:1050;padding:0 20px}
.nav-shell{
  position:relative;
  max-width:1200px;margin:0 auto;height:64px;
  display:flex;align-items:center;gap:18px;
  padding:0 12px 0 26px;
  background:rgba(255,255,255,.72);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
  backdrop-filter:blur(14px) saturate(1.2);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-1);
  transition:box-shadow .2s ease,background-color .2s ease;
}
.site-header.is-scrolled .nav-shell{box-shadow:var(--sh-2);background:rgba(255,255,255,.86)}
.brand{
  font-family:var(--serif);font-weight:900;letter-spacing:-.02em;
  font-size:clamp(15px,1.35vw,18px);color:var(--ink);white-space:nowrap;
}
.brand:hover{color:var(--ink-light)}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;color:var(--ink);
  align-items:center;justify-content:center;cursor:pointer;transition:background-color .2s ease;
}
.nav-toggle:hover{background:var(--bg-alt)}
.nav-collapse{display:flex;align-items:center;justify-content:flex-end;gap:18px;flex:1}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  position:relative;display:inline-block;padding:8px 8px;
  font-size:15px;font-weight:500;color:var(--muted);
}
.nav-links a::after{
  content:"";position:absolute;left:8px;bottom:2px;height:2px;width:18px;
  background:var(--orange);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--ink);font-weight:700}
.nav-links a.active::after{transform:scaleX(1)}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  height:44px;padding:0 22px;border-radius:var(--r-pill);
  background:var(--orange);color:#fff;font-size:15px;font-weight:600;
  box-shadow:0 10px 22px -12px rgba(226,96,60,.8);transition:transform .18s cubic-bezier(.2,.7,.3,1),filter .2s ease;
}
.nav-cta:hover{filter:brightness(.96);transform:translateY(-1px);color:#fff}
.nav-cta:active{transform:scale(.98)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-pill);font-size:16px;font-weight:600;
  border:1px solid transparent;cursor:pointer;line-height:1.2;
  transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease,filter .2s ease;
}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 12px 26px -14px rgba(226,96,60,.78)}
.btn-primary:hover{filter:brightness(.96);transform:translateY(-1px);color:#fff;box-shadow:0 18px 34px -16px rgba(226,96,60,.88)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:rgba(23,66,60,.08);color:var(--ink);transform:translateY(-1px)}
.btn-ghost:active{transform:scale(.98)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--ink);white-space:nowrap}
.link-arrow span{transition:transform .2s ease}
.link-arrow:hover{color:var(--orange)}
.link-arrow:hover span{transform:translateX(3px)}

/* ---------- 首屏 ---------- */
.hero{position:relative;overflow:hidden;padding:64px 0 96px;background:var(--bg)}
.hero::before{
  content:"";position:absolute;inset:0;
  background:url(/assets/images/backpic/back-1.webp) center/cover no-repeat;
  opacity:.13;
}
.hero::after{
  content:"";position:absolute;left:-180px;top:-120px;width:520px;height:520px;
  background:radial-gradient(circle at 40% 40%,rgba(216,168,78,.22),transparent 66%);
  pointer-events:none;
}
.hero .wrap{position:relative;z-index:2}
.hero-grid{align-items:center;gap:48px}
.eyebrow{
  display:inline-block;padding:6px 16px;border-radius:var(--r-pill);
  border:1px solid rgba(216,168,78,.75);background:rgba(255,255,255,.6);
  font-size:13px;color:var(--ink);letter-spacing:.02em;
}
.hero h1{
  margin:24px 0 0;
  font-size:clamp(30px,4.6vw,54px);
  font-weight:900;letter-spacing:-.02em;line-height:1.2;
}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.85;color:var(--muted);max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-meta{display:flex;flex-wrap:wrap;gap:32px;margin-top:40px;padding-top:28px;border-top:1px solid var(--line)}
.hero-meta li{display:flex;flex-direction:column;gap:4px}
.meta-k{font-size:13px;color:var(--muted)}
.meta-v{font-size:15px;font-weight:700;color:var(--ink)}
.hero-visual{position:relative}
.device-frame{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh-2);background:var(--card);
}
.device-frame img{width:100%;aspect-ratio:4/3.1;object-fit:cover;border-radius:var(--r-lg)}
.device-badge{
  position:absolute;right:18px;bottom:18px;
  padding:8px 16px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.92);color:var(--ink);
  font-size:13px;font-weight:600;box-shadow:var(--sh-1);
}

/* ---------- 价值编号 ---------- */
.value-strip{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line)}
.value-item{padding:36px 26px 0;border-left:1px solid var(--line)}
.value-item:first-child{border-left:0;padding-left:0}
.value-num{
  display:block;font-family:var(--serif);font-weight:900;font-size:40px;
  line-height:1;color:var(--ink);letter-spacing:-.02em;
}
.value-item h3{margin:18px 0 10px;font-size:20px}
.value-item p{font-size:15px;line-height:1.8;color:var(--muted)}

/* ---------- 轮播 ---------- */
.shot-carousel{position:relative;margin-top:8px}
.shot-figure img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh-1)}
.shot-copy .tag{margin-bottom:16px}
.shot-copy h3{font-size:clamp(20px,2.2vw,26px);margin-bottom:18px}
.bullet-list li{position:relative;padding-left:20px;margin-bottom:14px;color:var(--muted);font-size:16px;line-height:1.8}
.bullet-list li::before{
  content:"";position:absolute;left:0;top:.7em;width:8px;height:8px;border-radius:2px;background:var(--orange);
}
.shot-carousel .carousel-control-prev,
.shot-carousel .carousel-control-next{
  width:48px;height:48px;top:44%;border-radius:var(--r-pill);
  background:rgba(255,255,255,.94);opacity:1;color:var(--ink);
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-1);border:1px solid var(--line);transition:background-color .2s ease,transform .2s ease;
}
.shot-carousel .carousel-control-prev:hover,
.shot-carousel .carousel-control-next:hover{background:#fff;transform:translateY(-50%) scale(1.04)}
.shot-carousel .carousel-control-prev{left:18px;transform:translateY(-50%)}
.shot-carousel .carousel-control-next{right:18px;transform:translateY(-50%)}
.shot-carousel .carousel-control-prev i,
.shot-carousel .carousel-control-next i{font-size:15px}
.shot-carousel .carousel-indicators{
  position:static;margin:36px 0 0;display:flex;justify-content:center;gap:10px;
}
.shot-carousel .carousel-indicators [data-bs-target]{
  width:24px;height:3px;border:0;margin:0;padding:0;border-radius:2px;
  background:rgba(20,33,31,.18);opacity:1;
  transition:background-color .3s ease,width .3s ease;
}
.shot-carousel .carousel-indicators .active{background:var(--orange);width:36px}

/* ---------- 标签 / 徽章 ---------- */
.tag{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:13px;font-weight:500;line-height:1.6;
  border:1px solid rgba(216,168,78,.8);color:var(--ink);background:transparent;
}
.tag-soft{background:var(--bg-alt);border-color:transparent;color:var(--ink)}

/* ---------- 规格列表 ---------- */
.req-list{border-top:1px solid var(--line)}
.req-row{display:grid;grid-template-columns:150px 1fr;gap:24px;padding:18px 0;border-bottom:1px solid var(--line)}
.req-k{font-size:14px;color:var(--muted)}
.req-v{font-size:16px;font-weight:500;color:var(--text)}
.req-note{
  margin-top:28px;padding:20px 24px;border-radius:var(--r-md);
  background:rgba(255,255,255,.72);border-left:3px solid var(--orange);
  font-size:15px;line-height:1.8;color:var(--muted);
}

/* ---------- 评价墙 ---------- */
.review-wall{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  background:var(--card);border-radius:var(--r-lg);box-shadow:var(--sh-1);
  transition:transform .22s cubic-bezier(.2,.7,.3,1),box-shadow .22s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.review-card{position:relative;padding:32px;overflow:hidden}
.review-wide{grid-column:span 2}
.review-card:nth-child(3){grid-column:span 1}
.review-card:nth-child(4){grid-column:span 2}
.quote-mark{
  position:absolute;right:22px;top:6px;font-family:var(--serif);
  font-size:76px;line-height:1;color:rgba(20,33,31,.06);user-select:none;
}
.review-head{display:flex;align-items:center;gap:14px}
.avatar{width:40px;height:40px;border-radius:50%;object-fit:cover;background:var(--bg-alt)}
.review-name{font-size:15px;font-weight:700;color:var(--text)}
.review-date{font-size:13px;color:var(--muted)}
.stars{margin-top:16px;color:var(--gold);font-size:14px;letter-spacing:3px}
.review-text{margin-top:12px;font-size:16px;line-height:1.85;color:var(--muted)}

/* ---------- 最新动态 ---------- */
.latest-grid{align-items:start}
.post-main{display:block;overflow:hidden}
.post-main-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.post-main-body{padding:28px 32px 32px}
.post-main-title{margin:16px 0 12px;font-size:24px;line-height:1.4}
.post-main-sum{font-size:16px;line-height:1.8;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-main-time{display:inline-block;margin-top:18px;font-size:13px;color:var(--muted)}
.latest-list{display:flex;flex-direction:column;gap:12px}
.post-row{
  display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:14px;
  padding:18px 20px;border-radius:var(--r-md);background:var(--card);
  box-shadow:var(--sh-1);transition:background-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.post-row:hover{background:var(--bg-alt);transform:translateX(2px);box-shadow:var(--sh-2)}
.post-row-title{
  font-size:15px;font-weight:500;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.post-row-time{font-size:13px;color:var(--muted);white-space:nowrap}
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:16px;
  padding:64px 32px;border-radius:var(--r-lg);background:var(--bg-alt);text-align:center;
}
.empty-icon{font-size:44px;color:rgba(20,33,31,.22)}
.empty-state p{color:var(--muted);font-size:16px}

/* ---------- 下载面板 ---------- */
.download-panel{
  position:relative;overflow:hidden;
  background:var(--ink);color:#F2F6F4;
  border-radius:var(--r-lg);padding:56px;
  display:grid;grid-template-columns:1fr 1.1fr;gap:48px;align-items:center;
}
.download-panel::after{
  content:"";position:absolute;right:-90px;bottom:-140px;width:360px;height:360px;
  background:radial-gradient(circle at 34% 34%,rgba(226,96,60,.38),transparent 68%);
  pointer-events:none;
}
.download-panel h2{color:#fff;font-size:clamp(22px,2.6vw,32px)}
.download-panel .download-desc{margin-top:16px;font-size:16px;line-height:1.85;color:rgba(242,246,244,.74);max-width:420px}
.download-actions{position:relative;z-index:2;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.dl-btn{
  display:block;padding:16px 22px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
  transition:background-color .2s ease,transform .18s cubic-bezier(.2,.7,.3,1),border-color .2s ease;
}
.dl-btn:hover{background:rgba(255,255,255,.15);border-color:rgba(216,168,78,.62);transform:translateY(-1px)}
.dl-btn:active{transform:scale(.98)}
.dl-label{display:block;font-size:15px;font-weight:600;color:#fff;line-height:1.4}
.dl-sub{display:block;margin-top:4px;font-size:12px;color:rgba(242,246,244,.62)}

/* ---------- FAQ ---------- */
.faq-block{margin-top:72px}
.faq-list{margin-top:32px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:none;border:0;text-align:left;cursor:pointer;
  padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:17px;font-weight:700;color:var(--text);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--ink-light)}
.faq-icon{flex:none;font-size:22px;line-height:1;color:var(--orange);transition:transform .28s ease}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-item.open .faq-a{max-height:340px}
.faq-a-inner{
  margin-bottom:22px;padding:20px;border-radius:var(--r-md);background:var(--bg-alt);
  font-size:16px;line-height:1.8;color:var(--muted);
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(246,244,239,.78);padding:72px 0 32px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.3fr;gap:40px}
.footer-logo{font-family:var(--serif);font-size:20px;font-weight:900;color:#fff;letter-spacing:-.01em}
.footer-desc{margin-top:14px;font-size:14px;line-height:1.8;color:rgba(246,244,239,.62);max-width:320px}
.footer-col h3{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px;font-family:var(--sans)}
.footer-col li{margin-bottom:12px;font-size:14px;line-height:1.7}
.footer-col a{color:rgba(246,244,239,.72);display:inline-block}
.footer-col a:hover{color:var(--orange);transform:translateX(-2px)}
.footer-col span{color:rgba(246,244,239,.62)}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-size:13px;color:rgba(246,244,239,.52);
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .48s ease,transform .48s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
.no-js .reveal{opacity:1;transform:none}

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

/* ---------- 断点 ---------- */
@media (max-width:1199.98px){
  .wrap{padding:0 28px}
  .split-hero{grid-template-columns:6fr 5fr;gap:36px}
  .download-panel{padding:48px}
}
@media (max-width:991.98px){
  .site-header{top:10px;padding:0 14px}
  .nav-shell{height:56px;padding:0 10px 0 18px;gap:10px}
  .nav-toggle{display:inline-flex}
  .nav-collapse{
    position:absolute;left:0;right:0;top:calc(100% + 12px);
    flex-direction:column;align-items:stretch;gap:8px;
    background:rgba(255,255,255,.97);
    -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
    border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-2);
    padding:12px;
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
  }
  .nav-shell.open .nav-collapse{opacity:1;visibility:visible;transform:translateY(0)}
  .nav-links{flex-direction:column;align-items:stretch;gap:2px}
  .nav-links a{display:block;padding:12px 14px;border-radius:var(--r-md);font-size:16px}
  .nav-links a::after{display:none}
  .nav-links a.active{background:var(--bg-alt);color:var(--ink)}
  .nav-cta{width:100%;height:48px;margin-top:6px}
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .split-hero,.split-8-4,.split-5-7,.shot-slide{grid-template-columns:1fr;gap:32px}
  .hero{padding:40px 0 56px}
  .hero-actions .btn{flex:1 1 200px}
  .value-strip{grid-template-columns:repeat(2,1fr)}
  .value-item{border-left:0;border-top:1px solid var(--line);padding:28px 0 0}
  .value-item:nth-child(-n+2){border-top:0}
  .value-item:nth-child(even){padding-left:24px;border-left:1px solid var(--line)}
  .review-wall{grid-template-columns:repeat(2,1fr)}
  .review-wide,.review-card:nth-child(3),.review-card:nth-child(4){grid-column:span 2}
  .review-card:nth-child(2){grid-column:span 2}
  .download-panel{grid-template-columns:1fr;gap:32px;padding:40px 28px}
  .download-actions{grid-template-columns:1fr}
  .dl-btn{text-align:left}
  .faq-block{margin-top:48px}
  .shot-carousel .carousel-control-prev,
  .shot-carousel .carousel-control-next{display:none}
  .shot-figure img{aspect-ratio:4/3}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-brand{grid-column:span 2}
}
@media (max-width:575.98px){
  body{font-size:16px}
  .wrap{padding:0 20px}
  .section{padding:48px 0}
  .brand{font-size:15px;letter-spacing:-.02em;white-space:normal;line-height:1.2;max-width:190px}
  .hero h1{font-size:clamp(26px,7.4vw,34px)}
  .hero-meta{gap:20px}
  .hero-meta li{min-width:110px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .value-strip{grid-template-columns:1fr}
  .value-item,.value-item:nth-child(even){padding:24px 0 0;border-left:0}
  .value-item:nth-child(2){border-top:1px solid var(--line)}
  .review-wall{grid-template-columns:1fr}
  .review-wide,.review-card:nth-child(2),.review-card:nth-child(3),.review-card:nth-child(4){grid-column:span 1}
  .review-card{padding:24px}
  .post-main-body{padding:22px 20px 24px}
  .post-row{grid-template-columns:1fr;gap:8px;align-items:flex-start}
  .post-row-title{white-space:normal}
  .req-row{grid-template-columns:1fr;gap:6px}
  .download-panel{padding:32px 22px}
  .footer-grid{grid-template-columns:1fr}
  .footer-brand{grid-column:span 1}
  .footer-bottom{flex-direction:column;gap:8px}
}

/* roulang page: article */
:root{
  --ink:#17423C;
  --ink-2:#1F5A50;
  --orange:#E2603C;
  --gold:#D8A84E;
  --bg:#F6F4EF;
  --mist:#E9EFEC;
  --card:#FFFFFF;
  --text:#14211F;
  --text-2:#5E6B68;
  --line:rgba(20,33,31,.10);
  --r-lg:20px;
  --r-md:14px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,33,31,.04), 0 8px 24px rgba(20,33,31,.06);
  --sh-2:0 24px 60px -24px rgba(20,33,31,.28);
  --sh-focus:0 0 0 4px rgba(226,96,60,.18);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--ink-2);text-decoration:none;transition:color .2s var(--ease),transform .2s var(--ease);}
a:hover{color:var(--orange);}
button{font-family:inherit;}
h1,h2,h3,h4{font-family:var(--font-serif);font-weight:800;letter-spacing:-.015em;line-height:1.28;color:var(--text);margin:0;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{
  position:sticky;
  top:16px;
  z-index:1030;
  padding:0 24px;
}
.nav-shell{
  position:relative;
  max-width:1200px;
  margin:0 auto;
  height:64px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:0 10px 0 24px;
  background:rgba(255,255,255,.72);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
  backdrop-filter:blur(14px) saturate(1.2);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-1);
  transition:box-shadow .2s var(--ease),background .2s var(--ease);
}
.site-header.is-scrolled .nav-shell{
  box-shadow:var(--sh-2);
  background:rgba(255,255,255,.86);
}
.brand{
  font-family:var(--font-serif);
  font-weight:900;
  font-size:18px;
  letter-spacing:-.01em;
  color:var(--ink);
  white-space:nowrap;
}
.brand:hover{color:var(--ink);}
.nav-collapse{display:flex;align-items:center;gap:24px;}
.nav-links{display:flex;align-items:center;gap:2px;list-style:none;}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:9px 14px;
  font-size:15px;
  color:var(--text-2);
  border-radius:var(--r-pill);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-links a:hover{color:var(--ink);background:rgba(23,66,60,.06);}
.nav-links a.active{color:var(--ink);font-weight:600;}
.nav-links a.active::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:1px;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--orange);
  transform:translateX(-50%);
}
.nav-cta{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:11px 22px;
  font-size:14px;
  font-weight:600;
  color:#fff;
  background:var(--orange);
  border-radius:var(--r-pill);
  white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease);
}
.nav-cta:hover{color:#fff;transform:translateY(-1px);filter:brightness(.96);box-shadow:0 12px 26px -14px rgba(226,96,60,.85);}
.nav-cta:active{transform:scale(.98);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  background:#fff;
  color:var(--ink);
  font-size:16px;
  cursor:pointer;
}

/* ---------- 面包屑 ---------- */
.page-main{padding-top:40px;padding-bottom:96px;}
.breadcrumb-line{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-2);
  margin-bottom:28px;
}
.breadcrumb-line a{color:var(--text-2);}
.breadcrumb-line a:hover{color:var(--orange);}
.breadcrumb-line span[aria-hidden]{color:rgba(20,33,31,.32);}
.crumb-current{
  max-width:56ch;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  color:var(--text);
}

/* ---------- 文章头部 ---------- */
.article-head{
  max-width:900px;
  margin:0 auto 36px;
  padding-bottom:28px;
  border-bottom:1px solid var(--line);
  text-align:left;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 14px;
  font-size:13px;
  line-height:1.6;
  border-radius:var(--r-pill);
  color:var(--ink);
  background:var(--mist);
  border:1px solid transparent;
}
.tag-gold{background:transparent;border-color:rgba(216,168,78,.55);color:#9c7526;}
.article-head .tag{margin-bottom:18px;}
.article-head h1{
  font-size:clamp(26px,3.6vw,40px);
  font-weight:900;
  margin-bottom:20px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  font-size:13px;
  color:var(--text-2);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(20,33,31,.22);}
.article-meta time{color:var(--text);font-weight:500;}

/* ---------- 正文阅读区 ---------- */
.article-body{
  max-width:760px;
  margin:0 auto;
  font-size:17px;
  line-height:1.9;
  color:var(--text);
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  font-size:clamp(22px,2.6vw,28px);
  font-weight:800;
  margin:2.2em 0 .9em;
}
.article-body h2::before{
  content:"";
  display:block;
  width:26px;
  height:3px;
  border-radius:2px;
  background:var(--ink);
  margin-bottom:16px;
}
.article-body h3{
  font-size:20px;
  font-weight:700;
  margin:1.8em 0 .6em;
}
.article-body h4{font-size:17px;font-weight:700;margin:1.5em 0 .5em;}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:0;list-style:none;}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:.62em;}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:0;top:.78em;
  width:7px;height:7px;
  border-radius:2px;
  background:var(--orange);
}
.article-body ol{counter-reset:olc;}
.article-body ol li{position:relative;padding-left:30px;margin-bottom:.62em;counter-increment:olc;}
.article-body ol li::before{
  content:counter(olc);
  position:absolute;left:0;top:.32em;
  width:20px;height:20px;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;
  color:#fff;background:var(--ink);border-radius:50%;
}
.article-body blockquote{
  margin:1.8em 0;
  padding:20px 24px;
  background:var(--mist);
  border-left:3px solid var(--orange);
  border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--text-2);
  font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  width:100%;
  height:auto;
  border-radius:var(--r-md);
  margin:1.8em auto .6em;
}
.article-body figure{margin:1.8em 0;}
.article-body figcaption{
  font-size:13px;
  color:var(--text-2);
  text-align:center;
  margin-top:10px;
}
.article-body a{color:var(--ink-2);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--orange);}
.article-body strong{font-weight:700;color:var(--ink);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0;}
.article-body table{width:100%;border-collapse:collapse;margin:1.8em 0;font-size:15px;}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;}
.article-body th{color:var(--ink);font-weight:600;background:var(--mist);}
.article-body code{
  background:var(--mist);
  border-radius:6px;
  padding:2px 6px;
  font-size:14px;
}

/* ---------- 空态 ---------- */
.empty-state{
  max-width:760px;
  margin:0 auto;
  padding:64px 32px;
  text-align:center;
  background:var(--mist);
  border-radius:var(--r-lg);
}
.empty-state i{font-size:48px;color:var(--ink-2);opacity:.55;}
.empty-state p{margin:18px 0 22px;color:var(--text-2);font-size:16px;}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:12px 26px;
  font-size:15px;
  font-weight:600;
  color:var(--ink);
  border:1px solid var(--ink);
  border-radius:var(--r-pill);
  background:transparent;
}
.btn-ghost:hover{
  color:var(--ink);
  background:rgba(23,66,60,.08);
  transform:translateY(-1px);
}

/* ---------- 相关推荐 ---------- */
.related-section{
  margin-top:88px;
  padding-top:56px;
  border-top:1px solid var(--line);
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:32px;
}
.section-head h2{font-size:clamp(22px,2.6vw,30px);}
.section-head p{margin:10px 0 0;color:var(--text-2);font-size:15px;}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  color:var(--ink);
  white-space:nowrap;
}
.text-link i{transition:transform .2s var(--ease);}
.text-link:hover{color:var(--orange);}
.text-link:hover i{transform:translateX(3px);}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
}
.related-card{
  display:flex;
  align-items:center;
  gap:16px;
  padding:16px;
  background:var(--card);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.related-card img{
  width:88px;height:88px;
  flex:0 0 88px;
  object-fit:cover;
  border-radius:var(--r-md);
  background:var(--mist);
}
.related-card .rc-body{min-width:0;}
.related-card h3{
  font-size:16px;
  font-weight:700;
  margin-bottom:6px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.related-card p{
  font-size:13px;
  color:var(--text-2);
  margin:0;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.related-card:hover h3{color:var(--ink);}

/* ---------- 返回入口 ---------- */
.back-row{
  margin-top:40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:16px;
  padding-top:28px;
  border-top:1px solid var(--line);
}
.back-row .note{font-size:14px;color:var(--text-2);margin:0;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;
  background:var(--ink);
  color:rgba(246,244,239,.82);
  padding:72px 0 28px;
}
.site-footer .wrap{padding:0 32px;}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-logo{
  font-family:var(--font-serif);
  font-size:19px;
  font-weight:800;
  color:#F6F4EF;
  margin:0 0 14px;
}
.footer-desc{
  font-size:14px;
  line-height:1.8;
  color:rgba(246,244,239,.66);
  margin:0;
  max-width:32ch;
}
.footer-col h3{
  font-family:var(--font-sans);
  font-size:14px;
  font-weight:600;
  color:#F6F4EF;
  margin:0 0 16px;
  letter-spacing:.02em;
}
.footer-col ul{list-style:none;}
.footer-col li{margin-bottom:12px;}
.footer-col a,.footer-col span{
  font-size:14px;
  color:rgba(246,244,239,.7);
  transition:color .2s var(--ease),transform .2s var(--ease);
  display:inline-block;
}
.footer-col a:hover{color:var(--orange);transform:translateX(-2px);}
.footer-bottom{
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
}
.footer-bottom p{margin:0;font-size:13px;color:rgba(246,244,239,.55);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;row-gap:36px;}
}
@media (max-width:991px){
  .site-header{padding:0 16px;top:10px;}
  .nav-shell{height:56px;padding:0 8px 0 18px;}
  .brand{font-size:16px;letter-spacing:-.02em;}
  .nav-toggle{display:inline-flex;}
  .nav-collapse{
    position:absolute;
    left:0;right:0;
    top:calc(100% + 10px);
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:12px;
    background:rgba(255,255,255,.97);
    -webkit-backdrop-filter:blur(14px) saturate(1.2);
    backdrop-filter:blur(14px) saturate(1.2);
    border:1px solid var(--line);
    border-radius:var(--r-lg);
    box-shadow:var(--sh-2);
    opacity:0;
    visibility:hidden;
    transform:translateY(-8px);
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
  }
  .site-header.nav-open .nav-collapse{opacity:1;visibility:visible;transform:translateY(0);}
  .nav-links{flex-direction:column;align-items:stretch;gap:2px;}
  .nav-links a{display:flex;align-items:center;height:48px;padding:0 16px;font-size:15px;}
  .nav-links a.active{background:var(--mist);}
  .nav-links a.active::after{display:none;}
  .nav-cta{justify-content:center;margin-top:8px;padding:14px 22px;}
  .page-main{padding-top:28px;padding-bottom:56px;}
  .article-head{margin-bottom:28px;padding-bottom:22px;}
  .article-body{font-size:16px;}
  .related-grid{grid-template-columns:1fr;gap:16px;}
  .related-section{margin-top:64px;padding-top:40px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
}
@media (max-width:767px){
  .wrap{padding:0 20px;}
  .site-footer .wrap{padding:0 20px;}
  .site-header{padding:0 12px;}
  .site-footer{padding:56px 0 24px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;gap:8px;margin-top:36px;}
  .related-card img{width:72px;height:72px;flex:0 0 72px;}
  .empty-state{padding:48px 20px;}
}
@media (max-width:575px){
  .brand{font-size:15px;}
  .crumb-current{max-width:38ch;}
  .article-body{font-size:15.5px;}
  .back-row{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
  }
  .related-card:hover,.btn-ghost:hover,.nav-cta:hover{transform:none;}
}

/* roulang page: category1 */
:root{
  --brand:#17423C;
  --brand-light:#1F5A50;
  --accent:#E2603C;
  --gold:#D8A84E;
  --bg:#F6F4EF;
  --mist:#E9EFEC;
  --card:#FFFFFF;
  --ink:#14211F;
  --muted:#5E6B68;
  --line:rgba(20,33,31,.10);
  --r-lg:20px;
  --r-md:14px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,33,31,.04), 0 8px 24px rgba(20,33,31,.06);
  --sh-2:0 24px 60px -24px rgba(20,33,31,.28);
  --sh-focus:0 0 0 4px rgba(226,96,60,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,"Times New Roman",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.78;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease),transform .2s var(--ease);}
a:hover{color:var(--accent);}
button{font-family:inherit;}
h1,h2,h3,h4{font-family:var(--font-serif);font-weight:800;letter-spacing:-.015em;line-height:1.25;color:var(--ink);margin:0;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.reading{max-width:760px;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;
  top:16px;
  z-index:1030;
  padding:0 32px;
}
.nav-shell{
  position:relative;
  max-width:1200px;
  margin:0 auto;
  height:64px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:0 12px 0 26px;
  background:rgba(255,255,255,.72);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
  backdrop-filter:blur(14px) saturate(1.2);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-1);
  transition:box-shadow .2s var(--ease),background .2s var(--ease);
}
.nav-shell.scrolled{
  background:rgba(255,255,255,.86);
  box-shadow:var(--sh-2);
}
.brand{
  font-family:var(--font-serif);
  font-weight:800;
  font-size:19px;
  letter-spacing:-.01em;
  color:var(--brand);
  white-space:nowrap;
}
.brand:hover{color:var(--brand-light);}
.nav-collapse{display:flex;align-items:center;gap:10px;}
.nav-links{display:flex;align-items:center;gap:2px;}
.nav-links > li > a{
  position:relative;
  display:inline-block;
  padding:9px 15px;
  font-size:15px;
  font-weight:500;
  color:var(--ink);
  border-radius:var(--r-pill);
}
.nav-links > li > a:hover{color:var(--accent);background:rgba(226,96,60,.06);}
.nav-links > li > a.active{color:var(--brand);font-weight:600;}
.nav-links > li > a.active::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:1px;
  width:18px;
  height:2px;
  margin-left:-9px;
  border-radius:2px;
  background:var(--accent);
}
.nav-cta{
  display:inline-block;
  padding:11px 22px;
  background:var(--accent);
  color:#fff !important;
  font-size:14.5px;
  font-weight:600;
  border-radius:var(--r-pill);
  white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease);
}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 10px 22px -10px rgba(226,96,60,.75);filter:brightness(.96);}
.nav-cta:active{transform:scale(.98);}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  background:rgba(255,255,255,.6);
  color:var(--brand);
  border-radius:var(--r-pill);
  font-size:17px;
  cursor:pointer;
}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  margin-top:-80px;
  padding:172px 0 84px;
  background-image:linear-gradient(105deg,rgba(23,66,60,.90) 0%,rgba(23,66,60,.72) 55%,rgba(23,66,60,.55) 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  color:#F6F4EF;
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;
  right:-120px;
  bottom:-160px;
  width:460px;
  height:460px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(216,168,78,.30),rgba(216,168,78,0) 68%);
  pointer-events:none;
}
.page-hero .wrap{position:relative;z-index:2;}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(246,244,239,.72);
  margin-bottom:22px;
}
.crumbs a{color:rgba(246,244,239,.86);}
.crumbs a:hover{color:#fff;}
.crumbs span.sep{opacity:.6;}
.page-hero h1{
  color:#fff;
  font-size:clamp(30px,4.6vw,54px);
  letter-spacing:-.02em;
  margin-bottom:18px;
}
.page-hero .lede{
  max-width:660px;
  font-size:17px;
  line-height:1.85;
  color:rgba(246,244,239,.86);
  margin-bottom:28px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}
.hero-tags .tag{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:8px 16px;
  font-size:13px;
  border-radius:var(--r-pill);
  border:1px solid rgba(216,168,78,.55);
  color:#F6F4EF;
  background:rgba(255,255,255,.06);
}
.hero-tags .tag i{color:var(--gold);font-size:12px;}

/* ---------- sections ---------- */
.section{padding:96px 0;}
.section.mist{background:var(--mist);}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head .eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--brand-light);
  margin-bottom:14px;
}
.section-head h2{font-size:clamp(24px,3vw,36px);margin-bottom:14px;}
.section-head p{color:var(--muted);font-size:16.5px;}
.split{padding:84px 0;}
.split.alt{background:var(--mist);}
.split h2{font-size:clamp(23px,2.6vw,32px);margin-bottom:18px;}
.split p{color:var(--muted);}
.split .figure{
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.split .figure:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.split .figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  color:var(--brand);
  margin-top:6px;
}
.link-arrow i{font-size:12px;transition:transform .2s var(--ease);}
.link-arrow:hover{color:var(--accent);}
.link-arrow:hover i{transform:translateX(3px);}
.point-list{margin-top:20px;}
.point-list li{
  position:relative;
  padding-left:22px;
  margin-bottom:10px;
  color:var(--muted);
  font-size:15.5px;
}
.point-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:.68em;
  width:7px;
  height:7px;
  border-radius:2px;
  background:var(--accent);
}
.badge-soft{
  display:inline-block;
  padding:6px 14px;
  font-size:13px;
  border-radius:var(--r-pill);
  background:var(--mist);
  color:var(--brand);
  margin-bottom:16px;
}
.badge-gold{
  display:inline-block;
  padding:6px 14px;
  font-size:13px;
  border-radius:var(--r-pill);
  border:1px solid rgba(216,168,78,.7);
  color:var(--brand-light);
  margin-bottom:16px;
}

/* ---------- faq ---------- */
.faq-list .accordion-item{
  background:transparent;
  border:0;
  border-top:1px solid var(--line);
  border-radius:0;
}
.faq-list .accordion-item:last-child{border-bottom:1px solid var(--line);}
.faq-list .accordion-header{margin:0;}
.faq-list .accordion-button{
  background:transparent;
  box-shadow:none;
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:17px;
  font-weight:700;
  line-height:1.5;
  padding:22px 44px 22px 4px;
  border-radius:var(--r-md);
  transition:background .28s var(--ease),color .28s var(--ease),padding .28s var(--ease);
}
.faq-list .accordion-button:focus{box-shadow:none;border-color:transparent;}
.faq-list .accordion-button:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.faq-list .accordion-button:not(.collapsed){
  background:var(--mist);
  color:var(--brand);
  padding-left:20px;
  padding-right:60px;
}
.faq-list .accordion-button::after{
  content:"+";
  background-image:none !important;
  width:auto;
  height:auto;
  font-size:23px;
  font-weight:400;
  line-height:1;
  color:var(--brand);
  transform:none;
  transition:transform .28s var(--ease);
}
.faq-list .accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--accent);}
.faq-list .accordion-body{
  color:var(--muted);
  font-size:16px;
  line-height:1.85;
  padding:6px 20px 24px;
}
.faq-list .accordion-collapse.show .accordion-body{
  background:var(--mist);
  border-radius:0 0 var(--r-md) var(--r-md);
}

/* ---------- cta ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  background:linear-gradient(120deg,#17423C 0%,#1F5A50 100%);
  color:#F6F4EF;
  padding:48px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  box-shadow:var(--sh-2);
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-90px;
  bottom:-140px;
  width:340px;
  height:340px;
  background:radial-gradient(circle,rgba(226,96,60,.34),rgba(226,96,60,0) 70%);
  pointer-events:none;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);margin-bottom:10px;}
.cta-band p{color:rgba(246,244,239,.82);font-size:15.5px;margin:0;}
.cta-band .cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto;}
.btn-primary-solid{
  display:inline-block;
  padding:14px 28px;
  background:var(--accent);
  color:#fff !important;
  font-size:15px;
  font-weight:600;
  border-radius:var(--r-pill);
  border:0;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease);
}
.btn-primary-solid:hover{transform:translateY(-1px);box-shadow:0 14px 30px -12px rgba(226,96,60,.8);filter:brightness(.96);}
.btn-primary-solid:active{transform:scale(.98);}
.btn-ghost{
  display:inline-block;
  padding:13px 26px;
  background:transparent;
  color:#F6F4EF !important;
  border:1px solid rgba(246,244,239,.55);
  font-size:15px;
  font-weight:600;
  border-radius:var(--r-pill);
  transition:background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#F6F4EF;transform:translateY(-1px);}
.btn-ghost:active{transform:scale(.98);}
.btn-outline-brand{
  display:inline-block;
  padding:13px 26px;
  background:transparent;
  color:var(--brand) !important;
  border:1px solid var(--brand);
  font-size:15px;
  font-weight:600;
  border-radius:var(--r-pill);
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.btn-outline-brand:hover{background:rgba(23,66,60,.08);transform:translateY(-1px);}

/* ---------- footer ---------- */
.site-footer{
  margin-top:96px;
  background:var(--brand);
  color:#E9EFEC;
  padding:72px 0 0;
}
.site-footer .wrap{max-width:1200px;}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-logo{
  font-family:var(--font-serif);
  font-weight:800;
  font-size:20px;
  color:#fff;
  margin-bottom:14px;
}
.footer-desc{font-size:14.5px;color:rgba(233,239,236,.76);line-height:1.8;max-width:330px;}
.footer-col h3{
  font-family:var(--font-sans);
  font-size:15px;
  font-weight:700;
  color:#fff;
  margin-bottom:18px;
  letter-spacing:.02em;
}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul li a,
.footer-col ul li span{
  display:inline-block;
  font-size:14.5px;
  color:rgba(233,239,236,.78);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-col ul li a:hover{color:var(--accent);transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:24px 0 32px;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
}
.footer-bottom p{font-size:13px;color:rgba(233,239,236,.62);margin:0;}

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

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .wrap{padding:0 28px;}
  .site-header{padding:0 28px;}
  .section{padding:84px 0;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
}
@media (max-width:991.98px){
  .site-header{padding:0 20px;top:12px;}
  .nav-shell{height:56px;padding:0 10px 0 20px;}
  .brand{font-size:16.5px;}
  .nav-toggle{display:flex;}
  .nav-collapse{
    position:absolute;
    top:calc(100% + 10px);
    left:0;
    right:0;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:14px;
    background:rgba(255,255,255,.94);
    -webkit-backdrop-filter:blur(16px) saturate(1.2);
    backdrop-filter:blur(16px) saturate(1.2);
    border:1px solid var(--line);
    border-radius:var(--r-lg);
    box-shadow:var(--sh-2);
    opacity:0;
    visibility:hidden;
    transform:translateY(-8px);
    transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
  }
  .nav-collapse.open{opacity:1;visibility:visible;transform:none;}
  .nav-links{flex-direction:column;align-items:stretch;gap:2px;}
  .nav-links > li > a{display:flex;align-items:center;height:48px;padding:0 16px;border-radius:var(--r-md);font-size:15.5px;}
  .nav-links > li > a.active{background:var(--mist);}
  .nav-links > li > a.active::after{display:none;}
  .nav-cta{text-align:center;margin-top:10px;height:48px;line-height:26px;padding:11px 22px;}
  .page-hero{margin-top:-68px;padding:150px 0 68px;}
  .split{padding:64px 0;}
  .section{padding:72px 0;}
  .cta-band{padding:38px 32px;flex-direction:column;align-items:flex-start;text-align:left;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .split .order-lg-2{order:2;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .wrap{padding:0 20px;}
  .site-header{padding:0 16px;}
  .section{padding:56px 0;}
  .split{padding:56px 0;}
  .page-hero{padding:130px 0 56px;}
  .page-hero .lede{font-size:16px;}
  .split .figure img{aspect-ratio:4/3;}
  .cta-band{padding:32px 24px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:36px;}
  .site-footer{padding-top:56px;margin-top:64px;}
  .faq-list .accordion-button{font-size:16px;padding:18px 40px 18px 4px;}
}
@media (max-width:575.98px){
  .brand{font-size:14px;letter-spacing:-.02em;}
  .nav-shell{padding:0 8px 0 16px;gap:8px;}
  .page-hero h1{font-size:clamp(26px,7.4vw,34px);}
  .hero-tags .tag{font-size:12.5px;padding:7px 12px;}
  .btn-primary-solid,.btn-ghost,.btn-outline-brand{width:100%;text-align:center;}
  .cta-band .cta-actions{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --ink:#17423C;
  --ink-light:#1F5A50;
  --orange:#E2603C;
  --gold:#D8A84E;
  --bg:#F6F4EF;
  --mist:#E9EFEC;
  --card:#FFFFFF;
  --text:#14211F;
  --muted:#5E6B68;
  --line:rgba(20,33,31,.10);
  --r-lg:20px;
  --r-md:14px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,33,31,.04), 0 8px 24px rgba(20,33,31,.06);
  --sh-2:0 24px 60px -24px rgba(20,33,31,.28);
  --sh-focus:0 0 0 4px rgba(226,96,60,.18);
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:72px;--sp-9:96px;
  --bs-gutter-x:28px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
ul{margin:0;padding:0;list-style:none;}
button{font:inherit;}
h1,h2,h3{
  font-family:"Noto Serif SC","Songti SC",Georgia,serif;
  margin:0;
  line-height:1.25;
  letter-spacing:-.02em;
  font-weight:700;
  color:var(--text);
}
p{margin:0;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--orange);
  outline-offset:2px;
  border-radius:var(--r-sm);
}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* ============ 悬浮胶囊导航 ============ */
.site-header{
  position:sticky;
  top:16px;
  z-index:1040;
  padding:0 20px;
}
.nav-shell{
  position:relative;
  max-width:1200px;
  margin:0 auto;
  min-height:64px;
  display:flex;
  align-items:center;
  gap:16px;
  padding:8px 12px 8px 24px;
  background:rgba(255,255,255,.72);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
  backdrop-filter:blur(14px) saturate(1.2);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-1);
  transition:background .2s ease,box-shadow .2s ease;
}
.nav-shell.is-scrolled{
  background:rgba(255,255,255,.86);
  box-shadow:var(--sh-2);
}
.brand{
  font-family:"Noto Serif SC","Songti SC",Georgia,serif;
  font-size:17px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--ink);
  white-space:nowrap;
  flex:0 0 auto;
}
.brand:hover{color:var(--ink-light);}
.nav-collapse{
  display:flex;
  align-items:center;
  flex:1 1 auto;
  gap:12px;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  margin:0 auto;
}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:10px 14px;
  font-size:15px;
  color:var(--ink);
  border-radius:var(--r-sm);
  transition:color .2s ease,background .2s ease,transform .2s ease;
}
.nav-links a:hover{color:var(--orange);}
.nav-links a.active{font-weight:700;}
.nav-links a.active::after{
  content:"";
  position:absolute;
  left:50%;
  transform:translateX(-50%);
  bottom:3px;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--orange);
}
.nav-cta{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:11px 22px;
  font-size:14px;
  font-weight:600;
  color:#fff;
  background:var(--orange);
  border-radius:var(--r-pill);
  box-shadow:0 10px 22px -14px rgba(226,96,60,.9);
  transition:transform .2s cubic-bezier(.2,.7,.3,1),filter .2s ease,box-shadow .2s ease;
}
.nav-cta:hover{transform:translateY(-1px);filter:brightness(.96);color:#fff;box-shadow:0 16px 28px -16px rgba(226,96,60,1);}
.nav-cta:active{transform:scale(.98);}
.nav-toggle{
  display:none;
  margin-left:auto;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  background:transparent;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  color:var(--ink);
  font-size:17px;
  cursor:pointer;
  transition:background .2s ease;
}
.nav-toggle:hover{background:rgba(23,66,60,.08);}

/* ============ 通用按钮 ============ */
.btn-primary{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 28px;
  font-size:15px;font-weight:600;color:#fff;
  background:var(--orange);
  border:0;border-radius:var(--r-pill);
  cursor:pointer;
  box-shadow:0 12px 26px -14px rgba(226,96,60,.9);
  transition:transform .2s cubic-bezier(.2,.7,.3,1),filter .2s ease,box-shadow .2s ease;
}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(.96);color:#fff;box-shadow:0 18px 32px -16px rgba(226,96,60,1);}
.btn-primary:active{transform:scale(.98);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 26px;
  font-size:15px;font-weight:600;
  color:var(--ink);
  background:transparent;
  border:1px solid var(--ink);
  border-radius:var(--r-pill);
  cursor:pointer;
  transition:background .2s ease,transform .2s ease,color .2s ease;
}
.btn-ghost:hover{background:rgba(23,66,60,.08);color:var(--ink);}
.btn-ghost:active{transform:scale(.98);}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:500;color:var(--ink);
  transition:color .2s ease;
}
.text-link i{font-size:13px;transition:transform .2s ease;}
.text-link:hover{color:var(--orange);}
.text-link:hover i{transform:translateX(3px);}

/* ============ 板块与标题 ============ */
.section{padding:96px 0;}
.section--mist{background:var(--mist);}
.section-head{max-width:720px;margin-bottom:48px;}
.section-head h2{font-size:clamp(24px,3vw,34px);}
.section-head p{margin-top:14px;font-size:16px;color:var(--muted);}
.reveal{transition:opacity .48s ease,transform .48s cubic-bezier(.2,.7,.3,1);}
.reveal.is-hidden{opacity:0;transform:translateY(12px);}

/* ============ 页面头 ============ */
.page-head{
  padding:64px 0 48px;
  background:var(--bg);
  border-top:1px solid var(--line);
}
.page-head-inner{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.eyebrow{
  display:inline-block;
  margin-bottom:16px;
  padding:6px 14px;
  font-size:13px;
  letter-spacing:.04em;
  color:var(--ink);
  background:var(--mist);
  border-radius:var(--r-pill);
}
.page-head h1{
  font-size:clamp(28px,4vw,44px);
  max-width:780px;
}
.page-head .lead{
  margin-top:18px;
  max-width:640px;
  font-size:17px;
  color:var(--muted);
}
.badge-gold{
  display:inline-block;
  padding:9px 20px;
  font-size:13px;
  color:#8A6A1F;
  background:rgba(216,168,78,.10);
  border:1px solid var(--gold);
  border-radius:var(--r-pill);
  white-space:nowrap;
}

/* ============ 三件事卡片 ============ */
.point-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:28px;
}
.point-card{
  background:var(--card);
  border-radius:var(--r-lg);
  padding:30px;
  box-shadow:var(--sh-1);
  transition:transform .22s cubic-bezier(.2,.7,.3,1),box-shadow .22s ease;
}
.point-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.point-icon{
  width:46px;height:46px;
  display:grid;place-items:center;
  margin-bottom:20px;
  font-size:18px;
  color:var(--ink);
  background:var(--mist);
  border-radius:var(--r-md);
}
.point-card h3{font-size:19px;margin-bottom:10px;}
.point-card p{font-size:15px;color:var(--muted);line-height:1.8;}

/* ============ 时间轴 ============ */
.timeline{
  position:relative;
  max-width:780px;
  padding-left:52px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:11px;top:10px;bottom:10px;
  width:3px;border-radius:3px;
  background:var(--ink);
}
.tl-item{position:relative;padding-bottom:44px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";
  position:absolute;
  left:-46px;top:7px;
  width:12px;height:12px;
  border-radius:50%;
  background:var(--orange);
  box-shadow:0 0 0 4px rgba(226,96,60,.14);
}
.tl-step{
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--orange);
}
.tl-item h3{font-size:20px;margin:8px 0 10px;}
.tl-item p{font-size:15.5px;color:var(--muted);line-height:1.85;max-width:620px;}

/* ============ 规格卡 ============ */
.spec-row{--bs-gutter-x:28px;}
.spec-card{
  height:100%;
  background:var(--card);
  border-radius:var(--r-lg);
  padding:30px;
  box-shadow:var(--sh-1);
  transition:transform .22s cubic-bezier(.2,.7,.3,1),box-shadow .22s ease;
}
.spec-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.spec-card h3{font-size:20px;margin-bottom:6px;}
.spec-card .spec-sub{font-size:14px;color:var(--muted);margin-bottom:18px;}
.spec-img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--r-md);
  margin-bottom:22px;
}
.spec-list li{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:16px;
  padding:14px 0;
  font-size:15px;
  border-bottom:1px solid var(--line);
}
.spec-list li:last-child{border-bottom:0;padding-bottom:0;}
.spec-list .k{color:var(--muted);flex:0 0 auto;}
.spec-list .v{color:var(--ink);font-weight:600;text-align:right;}
.spec-note{
  margin-top:22px;
  padding:16px 18px;
  font-size:14px;
  line-height:1.8;
  color:var(--ink);
  background:var(--mist);
  border-radius:var(--r-md);
}

/* ============ 问答 ============ */
.qa-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.qa-item{
  background:var(--card);
  border-radius:var(--r-lg);
  padding:26px;
  box-shadow:var(--sh-1);
  transition:transform .22s cubic-bezier(.2,.7,.3,1),box-shadow .22s ease;
}
.qa-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.qa-item h3{font-size:17.5px;margin-bottom:10px;}
.qa-item p{font-size:15px;color:var(--muted);line-height:1.85;}

/* ============ CTA ============ */
.cta-panel{
  position:relative;
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
  padding:52px;
  background:var(--ink);
  color:#F6F4EF;
  border-radius:var(--r-lg);
  box-shadow:var(--sh-2);
}
.cta-panel::after{
  content:"";
  position:absolute;
  right:-80px;bottom:-120px;
  width:340px;height:340px;
  border-radius:50%;
  background:radial-gradient(circle at 30% 30%,rgba(216,168,78,.30),rgba(216,168,78,0) 68%);
  pointer-events:none;
}
.cta-copy{position:relative;z-index:1;max-width:560px;}
.cta-copy h2{color:#F6F4EF;font-size:clamp(23px,2.8vw,32px);}
.cta-copy p{margin-top:14px;font-size:16px;color:rgba(246,244,239,.78);}
.cta-actions{position:relative;z-index:1;display:flex;gap:14px;flex-wrap:wrap;}
.cta-panel .btn-ghost{color:#F6F4EF;border-color:rgba(246,244,239,.42);}
.cta-panel .btn-ghost:hover{background:rgba(246,244,239,.12);color:#F6F4EF;}
.back-row{margin-top:32px;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:0;
  padding:72px 0 28px;
  background:var(--ink);
  color:rgba(246,244,239,.82);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-logo{
  font-family:"Noto Serif SC","Songti SC",Georgia,serif;
  font-size:20px;
  font-weight:700;
  color:#F6F4EF;
  margin-bottom:14px;
  letter-spacing:-.01em;
}
.footer-desc{
  font-size:14px;
  line-height:1.85;
  color:rgba(246,244,239,.68);
  max-width:290px;
}
.footer-col h3{
  font-size:15px;
  font-weight:600;
  color:#F6F4EF;
  margin-bottom:18px;
}
.footer-col li{margin-bottom:11px;font-size:14px;}
.footer-col a{display:inline-block;transition:color .2s ease,transform .2s ease;}
.footer-col a:hover{color:var(--orange);transform:translateX(-2px);}
.footer-col span{color:rgba(246,244,239,.66);}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;
  color:rgba(246,244,239,.6);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .wrap{padding:0 28px;}
  .section{padding:80px 0;}
}
@media (max-width:991px){
  .nav-shell{padding:8px 10px 8px 20px;min-height:60px;}
  .brand{font-size:16px;}
  .nav-toggle{display:inline-flex;}
  .nav-collapse{
    position:absolute;
    left:0;right:0;
    top:calc(100% + 10px);
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:8px;
    padding:14px;
    background:rgba(255,255,255,.96);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    border:1px solid var(--line);
    border-radius:var(--r-lg);
    box-shadow:var(--sh-2);
  }
  .nav-collapse.open{display:flex;animation:fadeDown .28s ease both;}
  .nav-links{flex-direction:column;align-items:stretch;margin:0;gap:2px;width:100%;}
  .nav-links a{padding:13px 16px;min-height:48px;display:flex;align-items:center;border-radius:var(--r-sm);}
  .nav-links a:hover{background:var(--mist);}
  .nav-links a.active::after{display:none;}
  .nav-links a.active{background:var(--mist);color:var(--ink);}
  .nav-cta{width:100%;margin-top:8px;padding:13px 22px;}
  .point-grid{grid-template-columns:1fr;gap:16px;}
  .qa-grid{grid-template-columns:1fr;gap:16px;}
  .cta-panel{padding:40px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
}
@media (max-width:767px){
  .wrap{padding:0 20px;}
  .section{padding:56px 0;}
  .site-header{top:10px;padding:0 14px;}
  .brand{font-size:14.5px;letter-spacing:-.02em;}
  .page-head{padding:44px 0 36px;}
  .page-head .lead{font-size:15.5px;}
  .section-head{margin-bottom:32px;}
  .timeline{padding-left:0;}
  .timeline::before{display:none;}
  .tl-item::before{display:none;}
  .tl-item{padding-bottom:30px;}
  .cta-panel{padding:32px 24px;border-radius:var(--r-lg);}
  .cta-actions{width:100%;}
  .cta-actions .btn-primary,.cta-actions .btn-ghost{flex:1 1 100%;justify-content:center;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;margin-top:36px;}
}
@media (max-width:519px){
  .brand{font-size:13.5px;}
  .page-head h1{font-size:26px;}
  .point-card,.spec-card,.qa-item{padding:22px;}
  .spec-list li{flex-direction:column;gap:4px;align-items:flex-start;}
  .spec-list .v{text-align:left;}
}
@keyframes fadeDown{
  from{opacity:0;transform:translateY(-8px);}
  to{opacity:1;transform:translateY(0);}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .reveal,.reveal.is-hidden{opacity:1 !important;transform:none !important;}
}