/* roulang page: index */
:root{
  --brand:#FF6A2B;
  --brand-deep:#E5531A;
  --accent:#0FB5A0;
  --ink:#191C22;
  --ink2:#5C636E;
  --paper:#F7F6F3;
  --paper2:#FFFFFF;
  --dark:#14161C;
  --line:#E6E3DC;
  --warn:#FFC53D;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-block:24px;
  --shadow:0 1px 2px rgba(20,22,28,.05), 0 10px 30px -18px rgba(20,22,28,.25);
  --shadow-hover:0 2px 6px rgba(20,22,28,.07), 0 18px 40px -20px rgba(20,22,28,.35);
  --nav-h:68px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:'HarmonyOS Sans SC','PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
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(--brand);outline-offset:2px;border-radius:4px}
::selection{background:rgba(255,106,43,.2)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 24px}}
@media(min-width:1024px){.container{padding:0 32px}}

section[id],div[id="news"],div[id="faq"]{scroll-margin-top:84px}
.section{padding:56px 0}
@media(min-width:768px){.section{padding:72px 0}}
@media(min-width:1024px){.section{padding:96px 0}}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,246,243,.9);
  border-bottom:1px solid transparent;
  transition:background .22s ease, box-shadow .22s ease, border-color .22s ease;
}
@supports(backdrop-filter:blur(8px)){
  .site-header{backdrop-filter:blur(8px)}
}
.site-header.is-shrink{
  background:var(--paper2);
  border-bottom-color:var(--line);
  box-shadow:0 6px 18px -14px rgba(20,22,28,.4);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;height:68px;transition:height .22s ease;
}
.site-header.is-shrink .header-inner{height:60px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:34px;height:34px;border-radius:9px;flex:0 0 34px;
  background:linear-gradient(140deg,var(--brand) 0%,var(--brand-deep) 100%);
  color:#fff;display:grid;place-items:center;font-size:16px;font-weight:700;
  letter-spacing:0;
}
.logo-text{font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--ink);white-space:nowrap}
.main-nav{display:none;align-items:center;gap:30px}
@media(min-width:1024px){.main-nav{display:flex}}
.main-nav a{
  position:relative;font-size:15px;font-weight:500;color:var(--ink2);
  padding:8px 0;transition:color .2s ease;white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:0;bottom:2px;height:2px;width:0;
  background:var(--brand);border-radius:2px;transition:width .2s ease;
}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after{width:60%}
.main-nav a.is-active{color:var(--ink)}
.main-nav a.is-active::after{width:60%}
.header-actions{display:flex;align-items:center;gap:12px}
.header-actions .btn{display:none}
@media(min-width:1024px){.header-actions .btn{display:inline-flex}}
.menu-toggle{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  display:grid;place-items:center;background:var(--paper2);
  transition:border-color .2s ease, background .2s ease;
}
.menu-toggle:hover{border-color:var(--brand)}
.menu-toggle span{
  display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;
  position:relative;
}
.menu-toggle span::before,
.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}
@media(min-width:1024px){.menu-toggle{display:none}}

.drawer{
  position:fixed;inset:0;z-index:90;background:var(--paper);
  transform:translateX(100%);transition:transform .28s ease;
  display:flex;flex-direction:column;padding:20px 20px 0;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  display:grid;place-items:center;font-size:20px;line-height:1;color:var(--ink2);
}
.drawer-nav{padding:14px 0;flex:1;overflow-y:auto}
.drawer-nav a{
  display:block;font-size:22px;font-weight:600;line-height:20px;
  padding:18px 4px;color:var(--ink);border-bottom:1px solid var(--line);
}
.drawer-nav a:active{color:var(--brand)}
.drawer-foot{padding:16px 0 calc(20px + env(safe-area-inset-bottom))}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:13px 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background .18s ease, color .18s ease, border-color .18s ease, transform .18s ease, box-shadow .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 10px 22px -14px rgba(229,83,26,.9)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:var(--paper2);border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);background:rgba(255,106,43,.06)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
.btn-outline-light:hover{border-color:#fff;background:rgba(255,255,255,.12)}
.btn-sm{min-height:40px;padding:9px 18px;font-size:14px}
.btn-block{width:100%}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:#fff;color:var(--brand);transform:translateY(-1px)}

.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;
  color:var(--ink);padding-bottom:2px;border-bottom:2px solid var(--brand);
  transition:color .18s ease, gap .18s ease;
}
.link-arrow:hover{color:var(--brand);gap:10px}

/* ============ hero ============ */
.hero{position:relative;overflow:hidden;background:var(--dark);min-height:70vh;display:flex;align-items:center}
@media(min-width:1024px){.hero{min-height:80vh}}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.62;
}
.hero-overlay{
  position:absolute;inset:0;
  background:linear-gradient(90deg, rgba(20,22,28,.94) 0%, rgba(20,22,28,.78) 46%, rgba(20,22,28,.34) 100%);
}
.hero-inner{
  position:relative;z-index:2;width:100%;
  display:grid;gap:36px;padding:80px 0 72px;
}
@media(min-width:1024px){
  .hero-inner{grid-template-columns:minmax(0,1fr) 320px;gap:48px;align-items:center;padding:104px 0 96px}
}
.hero-copy{max-width:620px;color:#fff}
.hero h1{
  font-size:28px;line-height:1.25;font-weight:700;margin:18px 0 0;
  letter-spacing:.005em;
}
@media(min-width:768px){.hero h1{font-size:36px}}
@media(min-width:1024px){.hero h1{font-size:42px}}
.hero-sub{
  margin-top:16px;font-size:16px;line-height:1.8;color:rgba(255,255,255,.82);max-width:520px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-trust{
  display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:28px;
  font-size:14px;line-height:1.7;color:rgba(255,255,255,.78);
}
.hero-trust li{display:inline-flex;align-items:center;gap:8px}
.hero-trust li::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);flex:0 0 6px;
}
.hero-card{
  background:var(--paper2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow);color:var(--ink);
}
.hero-card-title{font-size:14px;font-weight:600;color:var(--ink2);letter-spacing:.02em}
.hero-stats{margin:16px 0 20px;display:grid;gap:14px}
.hero-stats li{display:flex;align-items:baseline;gap:10px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.hero-stats li:last-child{border-bottom:0;padding-bottom:0}
.hero-stats strong{font-size:28px;line-height:1;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums}
.hero-stats span{font-size:13px;line-height:1.6;color:var(--ink2)}

/* ============ badge & tag ============ */
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;line-height:1.6;
}
.badge-accent{background:rgba(15,181,160,.1);color:#0B8E7E}
.badge-brand{background:var(--brand);color:#fff}
.badge-soft{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.28)}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;
  background:var(--paper2);border:1px solid var(--line);color:var(--ink2);
  font-size:12px;letter-spacing:.02em;
}

/* ============ section head ============ */
.section-head{max-width:640px;margin-bottom:32px}
@media(min-width:1024px){.section-head{margin-bottom:44px}}
.section-head h2{font-size:26px;line-height:1.3;font-weight:600;color:var(--ink)}
@media(min-width:768px){.section-head h2{font-size:30px}}
@media(min-width:1024px){.section-head h2{font-size:32px}}
.section-head p{margin-top:12px;font-size:15px;line-height:1.8;color:var(--ink2);max-width:60ch}
.head-row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;max-width:none}

/* ============ features ============ */
.feature-layout{display:grid;gap:20px}
@media(min-width:1024px){.feature-layout{grid-template-columns:7fr 5fr;gap:24px;align-items:stretch}}
.feature-main{
  background:var(--paper2);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow);transition:box-shadow .2s ease, transform .2s ease;
}
.feature-main:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.feature-main img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s ease}
.feature-main:hover img{transform:scale(1.03)}
.feature-main-body{padding:24px}
.feature-main-body h3{font-size:20px;line-height:1.45;font-weight:600;margin-bottom:10px}
.feature-main-body p{font-size:15px;line-height:1.8;color:var(--ink2)}
.feature-side{display:grid;gap:20px;align-content:stretch}
.feature-item{
  display:grid;grid-template-columns:40px minmax(0,1fr);gap:16px;align-items:start;
  background:var(--paper2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow);transition:box-shadow .2s ease, transform .2s ease, border-color .2s ease;
}
.feature-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:rgba(255,106,43,.35)}
.feature-icon{
  width:40px;height:40px;border-radius:10px;display:grid;place-items:center;
  background:rgba(15,181,160,.1);color:#0B8E7E;font-size:16px;font-weight:700;
}
.feature-item h3{font-size:17px;line-height:1.5;font-weight:600;margin-bottom:6px}
.feature-item p{font-size:14px;line-height:1.7;color:var(--ink2)}
.feature-item .divider{height:1px;background:var(--line);margin:14px 0 0}

/* ============ demo ============ */
.steps{
  display:grid;gap:18px;margin-bottom:36px;counter-reset:step;
}
@media(min-width:768px){.steps{grid-template-columns:repeat(4,1fr);gap:0}}
.step{position:relative;padding-right:16px}
@media(min-width:768px){.step{padding-right:28px}}
.step-dot{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:50%;background:var(--brand);color:#fff;
  font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
}
.step::after{
  content:"";position:absolute;left:44px;right:14px;top:17px;height:0;
  border-top:2px dashed var(--line);
}
@media(max-width:767px){.step::after{display:none}}
.step:last-child::after{display:none}
.step h3{font-size:16px;font-weight:600;margin:12px 0 6px}
.step p{font-size:14px;line-height:1.7;color:var(--ink2)}

.rail-wrap{position:relative}
.rail{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 4px 20px;scrollbar-width:none;-ms-overflow-style:none;
}
.rail::-webkit-scrollbar{display:none}
.rail-card{
  flex:0 0 82%;scroll-snap-align:start;
  background:var(--paper2);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow);
  transition:transform .2s ease, box-shadow .2s ease;
}
@media(min-width:640px){.rail-card{flex:0 0 46%}}
@media(min-width:1024px){.rail-card{flex:0 0 30%}}
.rail-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.rail-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.rail-card-body{padding:18px}
.rail-card-body h3{font-size:16px;font-weight:600;margin:10px 0 6px}
.rail-card-body p{font-size:13px;line-height:1.7;color:var(--ink2)}
.meter{height:6px;border-radius:999px;background:var(--line);overflow:hidden;margin-top:12px}
.meter i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--warn))}
.rail-btn{
  position:absolute;top:calc(50% - 34px);width:44px;height:44px;border-radius:50%;
  background:var(--paper2);border:1px solid var(--line);color:var(--ink);
  display:none;place-items:center;box-shadow:var(--shadow);transition:all .18s ease;z-index:3;
}
.rail-btn:hover{border-color:var(--brand);color:var(--brand)}
.rail-btn.prev{left:-22px}
.rail-btn.next{right:-22px}
@media(min-width:1280px){.rail-btn{display:grid}}

/* ============ proof ============ */
.proof-band{
  display:grid;gap:22px;padding:28px 24px;border-radius:var(--radius-block);
  background:var(--paper2);border:1px solid var(--line);box-shadow:var(--shadow);
}
@media(min-width:640px){.proof-band{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.proof-band{grid-template-columns:repeat(4,1fr);padding:36px 32px}}
.proof-num{font-size:34px;line-height:1.1;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums}
@media(min-width:1024px){.proof-num{font-size:38px}}
.proof-num.accent{color:var(--accent)}
.proof-label{margin-top:8px;font-size:14px;line-height:1.7;color:var(--ink2)}

.review-rail{
  display:flex;gap:20px;overflow-x:auto;padding:4px 4px 16px;margin-top:40px;
  scrollbar-width:none;-ms-overflow-style:none;
}
.review-rail::-webkit-scrollbar{display:none}
.review-card{
  flex:0 0 320px;background:var(--paper2);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow);
}
.review-top{display:flex;align-items:center;gap:12px}
.avatar{
  width:40px;height:40px;border-radius:50%;flex:0 0 40px;display:grid;place-items:center;
  background:rgba(255,106,43,.12);color:var(--brand);font-size:15px;font-weight:700;
}
.review-name{font-size:14px;font-weight:600}
.review-role{font-size:12px;color:var(--ink2);line-height:1.6}
.stars{margin-left:auto;color:var(--warn);font-size:13px;letter-spacing:2px}
.review-card p{margin-top:14px;font-size:14px;line-height:1.8;color:var(--ink2)}

.logo-wall{
  margin-top:36px;display:grid;grid-template-columns:repeat(3,1fr);gap:14px;
}
@media(min-width:768px){.logo-wall{grid-template-columns:repeat(6,1fr);gap:20px}}
.logo-chip{
  height:60px;border-radius:var(--radius-btn);border:1px solid var(--line);
  background:var(--paper2);display:grid;place-items:center;
  font-size:13px;font-weight:600;color:var(--ink2);
  filter:grayscale(1);opacity:.6;transition:all .22s ease;
}
.logo-chip:hover{filter:grayscale(0);opacity:1;border-color:rgba(255,106,43,.4);color:var(--ink)}

/* ============ news ============ */
.news-grid{display:grid;gap:20px}
@media(min-width:1024px){.news-grid{grid-template-columns:6fr 6fr;gap:24px}}
.news-lead{
  background:var(--paper2);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow);transition:transform .2s ease, box-shadow .2s ease;
}
.news-lead:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.news-lead img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .35s ease}
.news-lead:hover img{transform:scale(1.03)}
.news-lead-body{padding:24px}
.news-lead-body h3{
  font-size:20px;line-height:1.5;font-weight:600;margin:12px 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s ease;
}
.news-lead:hover h3{color:var(--brand)}
.news-lead-body p{
  font-size:14px;line-height:1.8;color:var(--ink2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line);
  font-size:13px;color:var(--ink2);
}
.news-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line)}
.news-meta .more{margin-left:auto;font-weight:600;color:var(--ink);transition:color .2s ease}
.news-lead:hover .news-meta .more{color:var(--brand)}
.news-side{display:grid;gap:20px}
@media(min-width:640px) and (max-width:1023px){.news-side{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.news-side{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}}
.news-mini{
  display:flex;flex-direction:column;background:var(--paper2);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow);
  transition:transform .2s ease, box-shadow .2s ease;
}
.news-mini:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.news-mini h3{
  font-size:16px;line-height:1.5;font-weight:600;margin:10px 0 8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s ease;
}
.news-mini:hover h3{color:var(--brand)}
.news-mini p{
  font-size:13px;line-height:1.7;color:var(--ink2);
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.news-mini .news-meta{margin-top:auto;padding-top:14px;border-top:1px solid var(--line)}

.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-card);
  padding:48px 24px;text-align:center;background:var(--paper2);
}
.empty-state svg{width:48px;height:48px;color:var(--ink2);opacity:.5;margin:0 auto 16px}
.empty-state p{font-size:15px;color:var(--ink2);margin-bottom:20px}

/* ============ price ============ */
.price-grid{display:grid;gap:20px}
@media(min-width:768px){.price-grid{grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}}
.price-card{
  position:relative;background:var(--paper2);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:26px;box-shadow:var(--shadow);
  transition:transform .2s ease, box-shadow .2s ease;
}
.price-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.price-card.featured{border-top:3px solid var(--brand)}
@media(min-width:768px){.price-card.featured{transform:scale(1.03)}}
.price-card.featured:hover{transform:scale(1.03) translateY(-2px)}
.price-flag{
  position:absolute;top:-13px;left:26px;height:26px;padding:0 12px;border-radius:999px;
  background:var(--brand);color:#fff;font-size:12px;font-weight:600;
  display:inline-flex;align-items:center;
}
.price-name{font-size:18px;font-weight:600}
.price-desc{margin-top:6px;font-size:13px;line-height:1.7;color:var(--ink2)}
.price-amount{display:flex;align-items:baseline;gap:6px;margin:20px 0 20px}
.price-amount strong{font-size:36px;line-height:1;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums}
.price-amount span{font-size:14px;color:var(--ink2)}
.price-list{display:grid;gap:12px;padding:20px 0;border-top:1px solid var(--line);margin-bottom:22px}
.price-list li{display:flex;gap:10px;font-size:14px;line-height:1.7;color:var(--ink2)}
.price-list li::before{
  content:"✓";color:var(--accent);font-weight:700;flex:0 0 auto;
}
.price-note{margin-top:24px;font-size:13px;line-height:1.8;color:var(--ink2)}

/* ============ faq ============ */
.faq-layout{display:grid;gap:28px}
@media(min-width:1024px){.faq-layout{grid-template-columns:4fr 8fr;gap:48px;align-items:start}}
.faq-aside h2{font-size:26px;line-height:1.3;font-weight:600}
@media(min-width:1024px){.faq-aside{position:sticky;top:100px}.faq-aside h2{font-size:30px}}
.faq-aside p{margin-top:12px;font-size:15px;line-height:1.8;color:var(--ink2)}
.faq-list{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:16px;
  padding:20px 4px;text-align:left;font-size:16px;font-weight:600;color:var(--ink);
  transition:color .2s ease;
}
@media(min-width:768px){.faq-q{font-size:17px}}
.faq-q:hover{color:var(--brand)}
.faq-item.is-open .faq-q{color:var(--brand)}
.faq-icon{position:relative;width:16px;height:16px;flex:0 0 16px;transition:transform .2s ease}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-a-inner{padding:0 4px 22px;font-size:15px;line-height:1.85;color:var(--ink2);max-width:64ch}

/* ============ cta band ============ */
.cta-band{
  position:relative;overflow:hidden;background:var(--dark);border-radius:var(--radius-block);
  padding:40px 28px;
}
@media(min-width:1024px){.cta-band{padding:56px 48px}}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;opacity:.12;
}
.cta-inner{
  position:relative;z-index:2;display:grid;gap:24px;align-items:center;
}
@media(min-width:1024px){.cta-inner{grid-template-columns:minmax(0,1fr) auto;gap:40px}}
.cta-inner h2{font-size:24px;line-height:1.35;font-weight:600;color:#fff}
@media(min-width:1024px){.cta-inner h2{font-size:28px}}
.cta-inner p{margin-top:10px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);max-width:52ch}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px}
.cta-actions .text-link{color:rgba(255,255,255,.8);font-size:14px;border-bottom:1px solid rgba(255,255,255,.4);padding-bottom:2px}
.cta-actions .text-link:hover{color:#fff;border-color:#fff}

/* ============ footer ============ */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);margin-top:56px;padding:56px 0 28px}
@media(min-width:1024px){.site-footer{margin-top:88px;padding:72px 0 32px}}
.footer-grid{display:grid;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.footer-grid{grid-template-columns:2fr 1fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand .logo-text{color:#fff}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);max-width:34ch}
.footer-brand .kw-link{
  display:inline-block;margin-top:14px;font-size:14px;font-weight:600;
  color:rgba(255,255,255,.86);border-bottom:1px solid rgba(255,255,255,.35);padding-bottom:2px;
}
.footer-brand .kw-link:hover{color:#fff;border-color:#fff}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:grid;gap:12px}
.footer-col a{font-size:14px;line-height:1.7;color:rgba(255,255,255,.72);transition:color .18s ease}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-bottom{
  margin-top:40px;padding-top:24px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:13px;color:rgba(255,255,255,.56);
}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:#fff}

/* ============ float cta ============ */
.float-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:flex;align-items:center;justify-content:center;gap:8px;
  height:56px;padding-bottom:env(safe-area-inset-bottom);
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;
  border-top:1px solid rgba(255,255,255,.18);
  transform:translateY(110%);opacity:0;
  transition:transform .25s ease, opacity .25s ease;
}
.float-cta.is-visible{transform:translateY(0);opacity:1}
@media(min-width:1024px){
  .float-cta{
    left:auto;right:32px;bottom:32px;height:48px;padding:0 22px;
    border-radius:999px;border-top:0;font-size:14px;
    box-shadow:0 14px 30px -14px rgba(229,83,26,.9);
  }
}

/* ============ misc ============ */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .4s ease, transform .4s ease}
.reveal.is-in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
    --brand:#FF6A2B;
    --brand-deep:#E5531A;
    --accent:#0FB5A0;
    --ink:#191C22;
    --ink2:#5C636E;
    --paper:#F7F6F3;
    --paper2:#FFFFFF;
    --dark:#14161C;
    --line:#E6E3DC;
    --warn:#FFC53D;
    --radius-card:16px;
    --radius-btn:10px;
    --radius-img:12px;
    --radius-big:24px;
    --shadow-1:0 1px 2px rgba(20,22,28,.05), 0 10px 30px -18px rgba(20,22,28,.25);
    --shadow-2:0 2px 6px rgba(20,22,28,.07), 0 18px 40px -22px rgba(20,22,28,.32);
    --shell:1200px;
    --nav-h:68px;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
    font-size:16px;
    line-height:1.85;
    color:var(--ink);
    background:var(--paper);
    -webkit-font-smoothing:antialiased;
    letter-spacing:.01em;
  }
  a{color:inherit;text-decoration:none}
  img{display:block;max-width:100%}
  button{font:inherit;color:inherit}
  ul,ol{margin:0}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

  .container{width:100%;max-width:var(--shell);margin:0 auto;padding:0 20px}
  @media (min-width:768px){ .container{padding:0 24px} }
  @media (min-width:1024px){ .container{padding:0 32px} }

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(247,246,243,.88);
    backdrop-filter:saturate(140%) blur(10px);
    border-bottom:1px solid transparent;
    transition:background .2s ease, box-shadow .2s ease, border-color .2s ease;
  }
  .site-header.is-scrolled{
    background:#fff;
    border-bottom-color:var(--line);
    box-shadow:0 1px 2px rgba(20,22,28,.05), 0 10px 30px -18px rgba(20,22,28,.25);
  }
  .header-inner{display:flex;align-items:center;gap:18px;height:60px;transition:height .2s ease}
  @media (min-width:1024px){ .header-inner{height:var(--nav-h)} .site-header.is-scrolled .header-inner{height:60px} }

  .logo{display:inline-flex;align-items:center;gap:10px;flex:none}
  .logo-mark{
    width:34px;height:34px;flex:none;border-radius:10px;
    background:linear-gradient(135deg,var(--brand),var(--brand-deep));
    color:#fff;font-size:17px;font-weight:700;
    display:flex;align-items:center;justify-content:center;
    box-shadow:0 6px 14px -8px rgba(229,83,26,.9);
  }
  .logo-text{font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap;color:var(--ink)}

  .main-nav{display:none}
  @media (min-width:1024px){
    .main-nav{display:flex;align-items:center;gap:30px;margin-left:auto}
  }
  .main-nav a{
    position:relative;padding:6px 0;font-size:15px;font-weight:500;color:var(--ink2);
    transition:color .18s ease;
  }
  .main-nav a::after{
    content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
    background:var(--brand);border-radius:2px;transition:width .2s ease;
  }
  .main-nav a:hover{color:var(--ink)}
  .main-nav a:hover::after{width:100%}
  .main-nav a.is-active{color:var(--ink);font-weight:600}
  .main-nav a.is-active::after{width:60%}

  .header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
  @media (min-width:1024px){ .header-actions{margin-left:0} }

  .nav-toggle{
    width:44px;height:44px;display:none;align-items:center;justify-content:center;
    background:#fff;border:1px solid var(--line);border-radius:12px;
    transition:border-color .18s ease, box-shadow .18s ease;
  }
  .nav-toggle:hover{border-color:var(--brand)}
  .nav-toggle .bars{display:flex;flex-direction:column;gap:4px;width:18px}
  .nav-toggle .bars i{display:block;height:2px;border-radius:2px;background:var(--ink)}
  @media (max-width:1023px){ .nav-toggle{display:inline-flex} }

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:13px 26px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;line-height:1.2;text-align:center;
    border:1px solid transparent;cursor:pointer;
    transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  }
  .btn-primary{background:var(--brand);color:#fff}
  .btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 12px 24px -14px rgba(229,83,26,.95)}
  .btn-primary:active{transform:translateY(1px)}
  .btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
  .btn-ghost:hover{border-color:var(--brand);color:var(--brand);background:rgba(255,106,43,.06)}
  .btn-ghost:active{transform:translateY(1px)}
  .btn-sm{min-height:38px;padding:9px 18px;font-size:14px}
  .w-full{width:100%}

  /* ---------- 徽章 / 标签 ---------- */
  .badge{
    display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
    font-size:12px;font-weight:600;letter-spacing:.02em;line-height:1;
  }
  .badge-accent{background:rgba(15,181,160,.1);color:#0B8C7C}
  .badge-brand{background:var(--brand);color:#fff}
  .tag{
    display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;
    border:1px solid var(--line);background:#fff;color:var(--ink2);
    font-size:12px;letter-spacing:.02em;line-height:1;
    transition:border-color .18s ease,color .18s ease;
  }
  .tag:hover{border-color:var(--brand);color:var(--brand)}

  /* ---------- 面包屑 ---------- */
  .breadcrumb{
    list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    padding:0;margin:0;font-size:14px;color:rgba(255,255,255,.72);
  }
  .breadcrumb li{display:flex;align-items:center;gap:8px}
  .breadcrumb li + li::before{content:"/";color:rgba(255,255,255,.38)}
  .breadcrumb a{color:rgba(255,255,255,.8)}
  .breadcrumb a:hover{color:#fff;text-decoration:underline}
  .breadcrumb .current{color:#fff;font-weight:600}

  /* ---------- 分类小 Hero ---------- */
  .cat-hero{
    position:relative;overflow:hidden;color:#fff;
    background:#14161C url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  }
  .cat-hero::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(120deg,rgba(20,22,28,.7) 0%,rgba(20,22,28,.45) 62%,rgba(20,22,28,.5) 100%);
  }
  .cat-hero-inner{
    position:relative;z-index:2;min-height:240px;padding-top:18px;padding-bottom:28px;
    display:flex;flex-direction:column;justify-content:space-between;gap:28px;
  }
  @media (min-width:768px){
    .cat-hero-inner{min-height:268px;padding-top:22px;padding-bottom:34px;gap:36px}
  }
  .cat-hero h1{
    font-size:30px;line-height:1.3;font-weight:700;margin:14px 0 10px;max-width:24em;
    letter-spacing:.01em;
  }
  @media (min-width:768px){ .cat-hero h1{font-size:40px;line-height:1.25} }
  .hero-sub{font-size:15px;line-height:1.7;color:rgba(255,255,255,.86);margin:0}
  .cat-hero .badge-accent{
    background:rgba(15,181,160,.2);color:#5FE3D2;border:1px solid rgba(15,181,160,.42);
  }

  /* ---------- 主体布局 ---------- */
  .layout-grid{
    display:grid;grid-template-columns:minmax(0,1fr);gap:28px;
    padding-top:40px;padding-bottom:64px;
  }
  @media (min-width:1024px){
    .layout-grid{grid-template-columns:minmax(0,1fr) minmax(0,3fr);gap:48px;padding-top:64px;padding-bottom:96px}
  }

  .cat-toc{min-width:0}
  .toc-inner{position:sticky;top:88px}
  .toc-title{display:none}
  .toc-nav{display:flex;gap:10px;overflow-x:auto;padding-bottom:4px;scrollbar-width:none;-ms-overflow-style:none}
  .toc-nav::-webkit-scrollbar{display:none}
  .toc-nav a{
    flex:none;padding:8px 14px;border:1px solid var(--line);border-radius:999px;background:#fff;
    font-size:13px;color:var(--ink2);white-space:nowrap;transition:all .18s ease;
  }
  .toc-nav a:hover{color:var(--ink);border-color:#d9d5cc}
  .toc-nav a.is-current{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}
  @media (max-width:1023px){
    .cat-toc{
      position:sticky;top:60px;z-index:40;padding:10px 0 8px;
      background:var(--paper);border-bottom:1px solid var(--line);
    }
  }
  @media (min-width:1024px){
    .toc-title{
      display:block;margin:0 0 14px;font-size:12px;font-weight:600;letter-spacing:.08em;
      color:var(--ink2);
    }
    .toc-nav{flex-direction:column;gap:2px;border-left:1px solid var(--line);overflow:visible}
    .toc-nav a{
      border:0;border-left:2px solid transparent;border-radius:0;background:transparent;
      margin-left:-1px;padding:9px 0 9px 16px;font-size:14px;white-space:normal;
    }
    .toc-nav a:hover{background:transparent}
    .toc-nav a.is-current{
      background:transparent;color:var(--brand);border-left-color:var(--brand);font-weight:600;
    }
  }

  .cat-content{display:flex;flex-direction:column;gap:56px;min-width:0}
  @media (min-width:768px){ .cat-content{gap:72px} }

  .section-block{scroll-margin-top:128px}
  @media (min-width:1024px){ .section-block{scroll-margin-top:96px} }

  .section-title{font-size:23px;line-height:1.35;font-weight:600;margin:0 0 10px;letter-spacing:.01em}
  @media (min-width:768px){ .section-title{font-size:30px} }
  .section-lead{font-size:15px;color:var(--ink2);margin:0 0 26px;max-width:62ch}

  /* ---------- 图文两栏交错 ---------- */
  .split{display:grid;gap:18px;align-items:center}
  .split + .split{margin-top:28px}
  @media (min-width:768px){
    .split{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px}
    .split.reverse .split-media{order:2}
    .split + .split{margin-top:34px}
  }
  .split-media{
    border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:#fff;
  }
  .split-media img{
    width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .35s ease;
  }
  .split:hover .split-media img{transform:scale(1.02)}
  .split h3{font-size:19px;line-height:1.45;font-weight:600;margin:0 0 8px}
  @media (min-width:768px){ .split h3{font-size:20px} }
  .split p{font-size:15px;color:var(--ink2);margin:0 0 12px}
  .split ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:8px}
  .split li{position:relative;padding-left:18px;font-size:14px;color:var(--ink2)}
  .split li::before{
    content:"";position:absolute;left:0;top:.65em;width:6px;height:6px;border-radius:50%;
    background:var(--accent);
  }

  /* ---------- 编号列表 ---------- */
  .num-list{list-style:none;padding:0;border-top:1px solid var(--line)}
  .num-list li{
    display:grid;grid-template-columns:46px minmax(0,1fr);gap:14px;
    padding:20px 0;border-bottom:1px solid var(--line);
  }
  @media (min-width:768px){ .num-list li{grid-template-columns:64px minmax(0,1fr);gap:20px} }
  .num-list .num{
    font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
    font-size:19px;font-weight:700;color:var(--accent);letter-spacing:.02em;line-height:1.5;
  }
  .num-list h3{font-size:17px;font-weight:600;margin:0 0 6px}
  .num-list p{font-size:14px;color:var(--ink2);margin:0}

  /* ---------- 双列小卡 ---------- */
  .mini-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:20px}
  @media (min-width:640px){ .mini-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr)} }
  .mini-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:22px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  }
  .mini-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-1);border-color:#dcd8cf}
  .mini-icon{
    width:40px;height:40px;border-radius:12px;margin-bottom:14px;
    background:rgba(15,181,160,.1);color:var(--accent);
    display:flex;align-items:center;justify-content:center;
    font-size:13px;font-weight:700;letter-spacing:.02em;
  }
  .mini-card h3{font-size:17px;font-weight:600;margin:0 0 8px}
  .mini-card p{font-size:14px;color:var(--ink2);margin:0 0 14px}
  .mini-row{display:flex;flex-wrap:wrap;gap:8px}

  /* ---------- 表格 ---------- */
  .table-wrap{
    border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;overflow-x:auto;
    scrollbar-width:thin;
  }
  table.data{width:100%;min-width:660px;border-collapse:collapse;font-size:14px}
  table.data caption{
    text-align:left;padding:16px 18px 0;font-size:13px;color:var(--ink2);
  }
  table.data th{
    background:var(--paper);text-align:left;font-weight:600;color:var(--ink);
    padding:12px 16px;border-bottom:1px solid var(--line);white-space:nowrap;
  }
  table.data td{
    padding:12px 16px;border-bottom:1px solid var(--line);color:var(--ink2);vertical-align:top;
  }
  table.data tbody tr:last-child td{border-bottom:0}
  table.data tbody tr:hover td{background:rgba(255,106,43,.03)}
  table.data td:first-child{color:var(--ink);font-weight:500}

  /* ---------- 尾部 CTA 卡 ---------- */
  .cta-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:26px;display:grid;gap:18px;
  }
  @media (min-width:768px){
    .cta-card{grid-template-columns:minmax(0,1fr) auto;align-items:center;padding:32px;gap:24px}
  }
  .cta-card h2{font-size:21px;line-height:1.4;font-weight:600;margin:0 0 6px}
  @media (min-width:768px){ .cta-card h2{font-size:23px} }
  .cta-card p{font-size:14px;color:var(--ink2);margin:0;max-width:46ch}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px}

  /* ---------- 移动端抽屉 ---------- */
  .drawer{
    position:fixed;inset:0;z-index:90;background:var(--paper);
    display:flex;flex-direction:column;
    padding:0 20px calc(18px + env(safe-area-inset-bottom));
    transform:translateY(-100%);visibility:hidden;
    transition:transform .28s ease,visibility .28s ease;
  }
  .drawer.is-open{transform:translateY(0);visibility:visible}
  .drawer-top{display:flex;align-items:center;justify-content:space-between;height:60px;border-bottom:1px solid var(--line)}
  .drawer-close{
    width:44px;height:44px;background:#fff;border:1px solid var(--line);border-radius:12px;
    font-size:20px;line-height:1;display:flex;align-items:center;justify-content:center;
    transition:border-color .18s ease,color .18s ease;
  }
  .drawer-close:hover{border-color:var(--brand);color:var(--brand)}
  .drawer-nav{display:flex;flex-direction:column;flex:1;overflow-y:auto;padding:14px 0}
  .drawer-nav a{
    padding:15px 0;font-size:20px;line-height:1.5;font-weight:600;color:var(--ink);
    border-bottom:1px solid var(--line);
  }
  .drawer-nav a.is-active{color:var(--brand)}
  .drawer-foot{padding-top:16px;border-top:1px solid var(--line)}
  @media (min-width:1024px){ .drawer{display:none} }

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:56px 0 26px}
  @media (min-width:768px){ .site-footer{padding:72px 0 30px} }
  .footer-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:32px}
  @media (min-width:640px){ .footer-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr)} }
  @media (min-width:1024px){ .footer-grid{grid-template-columns:2fr 1fr 1fr 1fr 1fr;gap:40px} }
  .footer-brand .logo{margin-bottom:14px}
  .footer-brand .logo-text{color:#fff}
  .footer-brand p{font-size:14px;line-height:1.8;margin:0 0 12px;max-width:26em}
  .kw-link{
    display:inline-block;font-size:14px;color:var(--brand);
    border-bottom:2px solid rgba(255,106,43,.42);padding-bottom:2px;
    transition:color .18s ease,border-color .18s ease;
  }
  .kw-link:hover{color:#fff;border-color:#fff}
  .footer-col h3{font-size:14px;font-weight:600;color:#fff;margin:0 0 14px;letter-spacing:.02em}
  .footer-col ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:10px}
  .footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color .18s ease}
  .footer-col a:hover{color:#fff;text-decoration:underline}
  .footer-bottom{
    margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
    display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
    font-size:13px;color:rgba(255,255,255,.55);
  }
  .footer-bottom a{color:rgba(255,255,255,.72)}
  .footer-bottom a:hover{color:#fff;text-decoration:underline}

  @media (prefers-reduced-motion: reduce){
    html{scroll-behavior:auto}
    *{transition-duration:.01ms !important;animation-duration:.01ms !important}
  }

/* roulang page: article */
:root{
  --brand:#FF6A2B;
  --brandDeep:#E5531A;
  --accent:#0FB5A0;
  --accentDeep:#0C9B8A;
  --ink:#191C22;
  --body:#2B303A;
  --ink2:#5C636E;
  --paper:#F7F6F3;
  --paper2:#FFFFFF;
  --dark:#14161C;
  --line:#E6E3DC;
  --warn:#FFC53D;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-soft:0 1px 2px rgba(20,22,28,.05), 0 10px 30px -18px rgba(20,22,28,.25);
  --shadow-lift:0 2px 6px rgba(20,22,28,.06), 0 18px 40px -20px rgba(20,22,28,.32);
  --nav-h:68px;
}

html body{
  margin:0;
  background:var(--paper);
  color:var(--body);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
html body img{max-width:100%;display:block;height:auto}
html body a{color:inherit;text-decoration:none}
html body button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
html body ul,html body ol{list-style:none;margin:0;padding:0}
html body h1,html body h2,html body h3,html body p{margin:0}

:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
[id]{scroll-margin-top:96px}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:768px){ .container{padding-left:24px;padding-right:24px} }
@media (min-width:1024px){ .container{padding-left:32px;padding-right:32px} }

.skip-link{
  position:absolute;left:-9999px;top:0;background:#fff;color:var(--ink);
  padding:10px 16px;border-radius:0 0 10px 0;z-index:200;
}
.skip-link:focus{left:0}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,246,243,.96);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease,background .2s ease;
}
.site-header.is-scrolled{--nav-h:60px;background:#fff;box-shadow:0 8px 26px -20px rgba(20,22,28,.45)}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;height:var(--nav-h);
  transition:height .2s ease;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:34px;height:34px;border-radius:10px;flex:none;
  background:linear-gradient(135deg,var(--brand),#FF9A62);
  color:#fff;font-weight:700;font-size:17px;line-height:1;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px -10px rgba(255,106,43,.9);
}
.logo-text{
  font-size:18px;font-weight:700;color:var(--ink);
  letter-spacing:.01em;white-space:nowrap;
}
.main-nav{display:none}
@media (min-width:1024px){ .main-nav{display:flex;align-items:center;gap:30px} }
.main-nav a{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;font-weight:500;color:var(--ink2);
  transition:color .2s ease;
}
.main-nav a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:2px;
  background:var(--brand);transition:width .2s ease;
}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after{width:60%}
.main-nav a.is-active{color:var(--ink);font-weight:600}
.main-nav a.is-active::after{width:60%}
.header-actions{display:flex;align-items:center;gap:10px}

.read-progress{
  position:absolute;left:0;bottom:-1px;height:2px;width:0;
  background:linear-gradient(90deg,var(--brand),#FFA470);
  transition:width .12s linear;
}

.nav-toggle{
  display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  width:44px;height:44px;border-radius:10px;background:#fff;
  border:1px solid var(--line);transition:border-color .2s ease;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink)}
.nav-toggle:hover{border-color:var(--brand)}
@media (min-width:1024px){ .nav-toggle{display:none} }

.drawer{
  position:fixed;inset:0;z-index:90;background:#fff;
  display:flex;flex-direction:column;
  transform:translateX(102%);
  transition:transform .28s ease;
  padding-bottom:env(safe-area-inset-bottom);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:68px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  font-size:22px;line-height:1;color:var(--ink);
  display:flex;align-items:center;justify-content:center;
}
.drawer-close:hover{border-color:var(--brand);color:var(--brand)}
.drawer-nav{display:flex;flex-direction:column;padding-top:8px}
.drawer-nav a{
  font-size:20px;font-weight:600;line-height:1.4;color:var(--ink);
  padding:16px 0;border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--brand)}
.drawer-foot{margin-top:auto;padding:20px 20px 26px}
@media (min-width:1024px){ .drawer{display:none} }

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px -16px rgba(255,106,43,.95)}
.btn-primary:hover{background:var(--brandDeep);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);background:rgba(255,106,43,.06)}
.btn-sm{min-height:44px;padding:0 20px;font-size:14px}
.btn-block{width:100%}

.text-link{
  font-size:15px;font-weight:600;color:var(--ink);
  border-bottom:2px solid var(--brand);padding-bottom:2px;
  transition:color .18s ease;
}
.text-link:hover{color:var(--brand)}

/* ---------- 文章页头 ---------- */
.article-wrap{padding:28px 0 0;position:relative}
.article-wrap::before{
  content:"";position:absolute;left:0;right:0;top:0;height:220px;
  background:linear-gradient(180deg,rgba(255,106,43,.06),rgba(255,106,43,0));
  pointer-events:none;
}
.breadcrumb{position:relative;font-size:14px;color:var(--ink2)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:flex;align-items:center;gap:8px;min-width:0}
.breadcrumb li+li::before{content:"/";color:#B9B5AC}
.breadcrumb a{color:var(--ink2);transition:color .18s ease}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb [aria-current="page"]{color:var(--ink);font-weight:600;word-break:break-word}

.article-head{position:relative;max-width:820px;margin:0 auto;padding:26px 0 0}
.badge-cat{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;background:rgba(15,181,160,.1);color:var(--accentDeep);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.article-head h1{
  font-size:40px;line-height:1.3;font-weight:700;color:var(--ink);
  margin:16px 0 14px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--ink2);
}
.article-meta .dot{color:#C8C4BA}
.article-rule{max-width:820px;margin:22px auto 0;height:1px;background:var(--line)}

.lede{
  max-width:820px;margin:24px auto 0;padding-left:16px;
  border-left:3px solid var(--brand);
  font-size:17px;line-height:1.9;color:var(--ink2);
}

/* ---------- 正文排版 ---------- */
.article-body{max-width:820px;margin:0 auto;padding:30px 0 0}
.article-body h2{
  font-size:24px;line-height:1.5;font-weight:600;color:var(--ink);
  margin:1.9em 0 .8em;padding-left:12px;border-left:4px solid var(--brand);
}
.article-body h3{
  font-size:19px;line-height:1.5;font-weight:600;color:var(--ink);
  margin:1.6em 0 .6em;
}
.article-body p{font-size:17px;line-height:1.9;color:var(--body);margin:0 0 1.1em}
.article-body ul,.article-body ol{
  margin:0 0 1.2em;padding-left:1.4em;
  font-size:17px;line-height:1.85;color:var(--body);
}
.article-body ul li{list-style:disc;margin-bottom:10px}
.article-body ol li{list-style:decimal;margin-bottom:10px}
.article-body ul li::marker{color:var(--accent)}
.article-body ol li::marker{color:var(--accent);font-variant-numeric:tabular-nums;font-weight:600}
.article-body blockquote{
  margin:1.4em 0;padding:16px 20px;background:var(--paper);
  border-left:3px solid var(--line);border-radius:0 12px 12px 0;color:var(--ink2);
}
.article-body blockquote p{margin:0;font-size:16px;color:var(--ink2)}
.article-body img{border-radius:var(--radius-img);margin:1.4em auto}
.article-body a{
  color:var(--brandDeep);
  border-bottom:1px solid rgba(229,83,26,.35);
  transition:border-color .18s ease,color .18s ease;
}
.article-body a:hover{color:var(--brand);border-bottom-color:var(--brand)}
.article-body table{
  width:100%;border-collapse:collapse;border:1px solid var(--line);
  margin:1.4em 0;font-size:15px;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 16px;text-align:left;vertical-align:top}
.article-body th{background:var(--paper);color:var(--ink);font-weight:600}
.article-body strong{color:var(--ink)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}
@media (max-width:640px){
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
}

.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-card);
  background:#fff;padding:48px 24px;text-align:center;
}
.empty-state svg{width:48px;height:48px;color:#C8C4BA;margin:0 auto 16px}
.empty-title{font-size:18px;font-weight:600;color:var(--ink);margin-bottom:8px}
.empty-text{font-size:14px;line-height:1.8;color:var(--ink2);margin-bottom:20px}

/* ---------- 文末 ---------- */
.article-foot{
  max-width:820px;margin:44px auto 0;padding-top:24px;border-top:1px solid var(--line);
}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.tag-label{font-size:13px;color:var(--ink2);letter-spacing:.02em}
.tag-chip{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;
  border-radius:999px;background:#fff;border:1px solid var(--line);
  font-size:13px;color:var(--ink2);
  transition:border-color .18s ease,color .18s ease,transform .18s ease;
}
.tag-chip:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}

.post-nav{display:grid;grid-template-columns:1fr;gap:16px;margin-top:26px}
@media (min-width:768px){ .post-nav{grid-template-columns:1fr 1fr} }
.post-nav-card{
  display:block;padding:18px 20px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-card);
  transition:border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.post-nav-card:hover{border-color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-lift)}
.pn-label{display:block;font-size:12px;color:var(--ink2);letter-spacing:.02em;margin-bottom:6px}
.pn-title{display:block;font-size:15px;font-weight:600;color:var(--ink);line-height:1.6}

/* ---------- 相关推荐 ---------- */
.related{margin-top:72px;padding-top:42px;border-top:1px solid var(--line)}
.related-inner{max-width:980px;margin:0 auto}
.sec-title{font-size:24px;line-height:1.4;font-weight:600;color:var(--ink);margin-bottom:22px}
.rel-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:768px){ .rel-grid{grid-template-columns:repeat(3,1fr)} }
.rel-card{
  display:flex;flex-direction:column;background:#fff;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--radius-card);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lift);border-color:rgba(255,106,43,.45)}
.rel-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--paper)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.03)}
.rel-body{display:flex;flex-direction:column;gap:10px;flex:1;padding:18px 20px 20px}
.rel-badge{
  align-self:flex-start;display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;background:rgba(15,181,160,.1);color:var(--accentDeep);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.rel-title{
  font-size:16px;font-weight:600;color:var(--ink);line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .18s ease;
}
.rel-card:hover .rel-title{color:var(--brand)}
.rel-desc{
  font-size:13.5px;line-height:1.7;color:var(--ink2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-meta{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:12px;color:var(--ink2);
}
.rel-meta .arrow{color:var(--brand);font-weight:700}

.back-row{display:flex;flex-wrap:wrap;justify-content:space-between;gap:20px;margin-top:36px}
@media (max-width:767px){ .back-row{flex-direction:column;gap:14px} }

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 28px;margin-top:88px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:640px){ .footer-grid{grid-template-columns:1fr 1fr} }
@media (min-width:1024px){ .footer-grid{grid-template-columns:1.7fr 1fr 1fr 1fr 1fr;gap:40px} }
.footer-brand .logo-text{color:#fff}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);margin:14px 0 12px;max-width:30ch}
.kw-link{font-size:14px;color:var(--brand);border-bottom:1px solid rgba(255,106,43,.45);padding-bottom:2px}
.kw-link:hover{color:#fff;border-bottom-color:#fff}
.footer-col h3{
  font-size:14px;font-weight:600;color:#fff;letter-spacing:.02em;margin-bottom:14px;
}
.footer-col ul{display:flex;flex-direction:column;gap:4px}
.footer-col a{
  font-size:14px;line-height:2;color:rgba(255,255,255,.72);
  transition:color .18s ease;
}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.62)}
.footer-bottom a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}

@media (max-width:767px){
  .article-head h1{font-size:28px;line-height:1.35}
  .article-body p,.article-body ul,.article-body ol{font-size:16px;line-height:1.85}
  .article-body h2{font-size:21px}
  .lede{font-size:16px}
  .sec-title{font-size:21px}
}

/* roulang page: category2 */
:root{
    --brand:#FF6A2B;
    --brand-deep:#E5531A;
    --accent:#0FB5A0;
    --accent-ink:#0B8E7E;
    --ink:#191C22;
    --ink2:#5C636E;
    --paper:#F7F6F3;
    --paper2:#FFFFFF;
    --dark:#14161C;
    --line:#E6E3DC;
    --line-strong:#D9D5CB;
    --warn:#FFC53D;
    --radius-card:16px;
    --radius-btn:10px;
    --radius-img:12px;
    --shadow-1:0 1px 2px rgba(20,22,28,.05), 0 10px 30px -18px rgba(20,22,28,.25);
    --shadow-2:0 2px 6px rgba(20,22,28,.07), 0 20px 44px -22px rgba(20,22,28,.32);
    --header-h:68px;
    --pad-x:20px;
  }
  @media (min-width:768px){ :root{ --pad-x:24px; --header-h:68px; } }
  @media (min-width:1024px){ :root{ --pad-x:32px; } }

  *,*::before,*::after{ box-sizing:border-box; }
  html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
  body{
    margin:0;
    font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.85;
    letter-spacing:.01em;
    color:var(--ink);
    background:var(--paper);
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4,p,figure,blockquote{ margin:0; }
  ul,ol{ margin:0; padding:0; list-style:none; }
  img,svg{ display:block; max-width:100%; }
  a{ color:inherit; text-decoration:none; }
  button{ font:inherit; color:inherit; }
  section[id],div[id]{ scroll-margin-top:calc(var(--header-h) + 16px); }

  :focus-visible{ outline:2px solid var(--brand); outline-offset:2px; border-radius:6px; }

  .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding-left:var(--pad-x);
    padding-right:var(--pad-x);
  }

  .no-bar{ -ms-overflow-style:none; scrollbar-width:none; }
  .no-bar::-webkit-scrollbar{ display:none; width:0; height:0; }

  /* ============ 顶部导航 ============ */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:var(--paper);
    border-bottom:1px solid transparent;
    transition:box-shadow .22s ease, border-color .22s ease;
  }
  .site-header.is-scrolled{
    border-bottom-color:var(--line);
    box-shadow:0 1px 2px rgba(20,22,28,.05), 0 14px 26px -24px rgba(20,22,28,.45);
  }
  .header-inner{
    display:flex;
    align-items:center;
    gap:20px;
    height:68px;
    transition:height .22s ease;
  }
  .site-header.is-scrolled .header-inner{ height:60px; }

  .logo{ display:inline-flex; align-items:center; gap:10px; flex:none; }
  .logo-mark{
    width:34px; height:34px; flex:none;
    border-radius:10px;
    background:linear-gradient(140deg,var(--brand),var(--brand-deep));
    color:#fff; font-size:17px; font-weight:700;
    display:grid; place-items:center;
    letter-spacing:0;
  }
  .logo-text{ font-size:17px; font-weight:700; letter-spacing:.01em; white-space:nowrap; }

  .main-nav{ display:none; align-items:center; gap:30px; margin-left:auto; }
  @media (min-width:1024px){ .main-nav{ display:flex; } }
  .main-nav a{
    position:relative;
    font-size:15px;
    font-weight:500;
    color:var(--ink2);
    padding:8px 0;
    transition:color .2s ease;
    white-space:nowrap;
  }
  .main-nav a::after{
    content:"";
    position:absolute;
    left:0; bottom:0;
    height:2px; width:0;
    background:var(--brand);
    border-radius:2px;
    transition:width .2s ease;
  }
  .main-nav a:hover{ color:var(--ink); }
  .main-nav a:hover::after{ width:60%; }
  .main-nav a.is-active{ color:var(--ink); font-weight:600; }
  .main-nav a.is-active::after{ width:60%; }

  .header-actions{ display:flex; align-items:center; gap:12px; margin-left:auto; }
  @media (min-width:1024px){ .header-actions{ margin-left:0; } }
  .header-cta{ display:none; }
  @media (min-width:1024px){ .header-cta{ display:inline-flex; } }

  .nav-toggle{
    display:inline-flex;
    width:44px; height:44px;
    align-items:center; justify-content:center;
    border:1px solid var(--line);
    background:var(--paper2);
    border-radius:10px;
    cursor:pointer;
    transition:border-color .18s ease, background .18s ease;
  }
  .nav-toggle:hover{ border-color:var(--brand); }
  @media (min-width:1024px){ .nav-toggle{ display:none; } }
  .nav-toggle span{
    display:block; width:18px; height:2px; background:var(--ink); border-radius:2px;
    position:relative;
  }
  .nav-toggle span::before,.nav-toggle span::after{
    content:""; position:absolute; left:0; width:18px; height:2px; background:var(--ink); border-radius:2px;
  }
  .nav-toggle span::before{ top:-6px; }
  .nav-toggle span::after{ top:6px; }

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:44px;
    padding:13px 26px;
    border-radius:var(--radius-btn);
    border:1px solid transparent;
    font-size:15px;
    font-weight:600;
    cursor:pointer;
    transition:background .18s ease, color .18s ease, border-color .18s ease, transform .18s ease, box-shadow .18s ease;
    white-space:nowrap;
  }
  .btn-primary{
    background:var(--brand);
    color:#fff;
    box-shadow:0 10px 22px -14px rgba(229,83,26,.9);
  }
  .btn-primary:hover{ background:var(--brand-deep); transform:translateY(-1px); }
  .btn-primary:active{ transform:translateY(1px); }
  .btn-ghost{
    background:var(--paper2);
    border-color:var(--line);
    color:var(--ink);
  }
  .btn-ghost:hover{
    border-color:var(--brand);
    color:var(--brand);
    background:rgba(255,106,43,.06);
  }
  .btn-sm{ min-height:40px; padding:9px 18px; font-size:14px; }

  .btn-text{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:15px;
    font-weight:600;
    color:var(--ink);
    padding-bottom:3px;
    border-bottom:2px solid var(--brand);
    transition:color .18s ease;
  }
  .btn-text:hover{ color:var(--brand); }

  /* ============ 徽章 / 标签 ============ */
  .badge{
    display:inline-flex;
    align-items:center;
    height:26px;
    padding:0 12px;
    border-radius:999px;
    font-size:12px;
    line-height:1.6;
    letter-spacing:.02em;
    font-weight:600;
    white-space:nowrap;
  }
  .badge-accent{ background:rgba(15,181,160,.12); color:var(--accent-ink); }
  .badge-brand{ background:var(--brand); color:#fff; }

  /* ============ Hero ============ */
  .hero{
    position:relative;
    overflow:hidden;
    background:var(--paper);
    padding:48px 0 52px;
  }
  @media (min-width:768px){ .hero{ padding:64px 0 72px; } }
  @media (min-width:1024px){ .hero{ padding:84px 0 92px; } }
  .hero::before{
    content:"";
    position:absolute;
    top:-70px; right:-24%;
    width:74%; height:150%;
    background:rgba(255,106,43,.08);
    clip-path:polygon(30% 0,100% 0,100% 100%,0 100%);
    pointer-events:none;
  }
  @media (min-width:1024px){
    .hero::before{ right:-8%; width:52%; }
  }
  .hero-inner{ position:relative; z-index:1; }
  .hero-copy{ max-width:820px; }

  .breadcrumb{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:8px;
    font-size:14px;
    line-height:1.7;
    color:var(--ink2);
    margin-bottom:22px;
  }
  .breadcrumb li{ display:flex; align-items:center; gap:8px; }
  .breadcrumb li + li::before{ content:"/"; color:var(--line-strong); }
  .breadcrumb a{ transition:color .18s ease; }
  .breadcrumb a:hover{ color:var(--brand); }
  .breadcrumb .current{ color:var(--ink); font-weight:600; }

  .hero h1{
    font-size:28px;
    line-height:1.3;
    font-weight:700;
    letter-spacing:-.01em;
    margin:18px 0 16px;
    max-width:760px;
  }
  @media (min-width:768px){ .hero h1{ font-size:38px; } }
  @media (min-width:1024px){ .hero h1{ font-size:44px; line-height:1.25; } }

  .hero-sub{
    font-size:16px;
    line-height:1.8;
    color:var(--ink2);
    max-width:620px;
    margin-bottom:26px;
  }
  @media (min-width:768px){ .hero-sub{ font-size:17px; } }

  .hero-cta{ display:flex; flex-wrap:wrap; gap:14px; margin-bottom:28px; }

  .hero-points{
    display:flex;
    flex-wrap:wrap;
    gap:10px 24px;
    font-size:14px;
    line-height:1.7;
    color:var(--ink2);
  }
  .hero-points li{ display:flex; align-items:center; gap:8px; }
  .hero-points li::before{
    content:"";
    width:6px; height:6px; border-radius:50%;
    background:var(--accent);
    flex:none;
  }

  /* ============ Chip 条 ============ */
  .chip-bar{
    background:var(--paper);
    border-bottom:1px solid var(--line);
    padding:14px 0 2px;
  }
  .chip-scroll{
    display:flex;
    gap:10px;
    overflow-x:auto;
    scroll-snap-type:x proximity;
    padding-bottom:14px;
  }
  .chip{
    flex:none;
    display:inline-flex;
    align-items:center;
    height:38px;
    padding:0 18px;
    border-radius:999px;
    border:1px solid var(--line);
    background:var(--paper2);
    font-size:14px;
    font-weight:500;
    color:var(--ink2);
    scroll-snap-align:start;
    transition:border-color .18s ease, color .18s ease, background .18s ease;
  }
  .chip:hover{ border-color:var(--brand); color:var(--brand); }
  .chip.is-active{
    background:var(--brand);
    border-color:var(--brand);
    color:#fff;
    font-weight:600;
  }

  /* ============ 区块通用 ============ */
  .section{ padding:56px 0; }
  @media (min-width:768px){ .section{ padding:72px 0; } }
  @media (min-width:1024px){ .section{ padding:96px 0; } }
  .section-white{
    background:var(--paper2);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
  }
  .section-head{ max-width:720px; margin-bottom:34px; }
  .section-head h2{
    font-size:25px;
    line-height:1.32;
    font-weight:600;
    letter-spacing:-.01em;
    margin-bottom:12px;
  }
  @media (min-width:768px){ .section-head h2{ font-size:28px; } }
  @media (min-width:1024px){ .section-head h2{ font-size:31px; } }
  .section-head p{ color:var(--ink2); font-size:16px; max-width:640px; }
  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    font-weight:600;
    color:var(--brand);
    letter-spacing:.04em;
    margin-bottom:12px;
  }
  .eyebrow::before{
    content:"";
    width:16px; height:2px; border-radius:2px; background:var(--brand);
  }

  /* ============ 步骤卡片网格 ============ */
  .step-grid{ display:grid; gap:20px; grid-template-columns:1fr; }
  @media (min-width:640px){ .step-grid{ grid-template-columns:repeat(2,1fr); } }
  @media (min-width:1024px){ .step-grid{ grid-template-columns:repeat(3,1fr); gap:24px; } }

  .step-card{
    position:relative;
    background:var(--paper2);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:24px;
    transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  }
  .step-card:hover{
    transform:translateY(-2px);
    box-shadow:var(--shadow-1);
    border-color:var(--line-strong);
  }
  .step-num{
    display:block;
    font-size:13px;
    font-weight:700;
    font-variant-numeric:tabular-nums;
    letter-spacing:.1em;
    color:var(--accent);
    margin-bottom:14px;
  }
  .step-card h3{
    font-size:19px;
    line-height:1.45;
    font-weight:600;
    margin-bottom:10px;
  }
  .step-card p{ font-size:15px; line-height:1.8; color:var(--ink2); }

  /* ============ 节奏进度 ============ */
  .rhythm-list{ display:grid; gap:20px; grid-template-columns:1fr; }
  @media (min-width:1024px){ .rhythm-list{ grid-template-columns:repeat(3,1fr); gap:24px; } }
  .rhythm-item{
    background:var(--paper2);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:24px;
    transition:transform .2s ease, box-shadow .2s ease;
  }
  .rhythm-item:hover{ transform:translateY(-2px); box-shadow:var(--shadow-1); }
  .rhythm-day{
    display:inline-flex;
    align-items:center;
    height:26px;
    padding:0 12px;
    border-radius:999px;
    background:rgba(15,181,160,.12);
    color:var(--accent-ink);
    font-size:12px;
    font-weight:600;
    letter-spacing:.02em;
    margin-bottom:16px;
  }
  .rhythm-item h3{ font-size:18px; font-weight:600; margin-bottom:10px; line-height:1.45; }
  .rhythm-item p{ font-size:15px; line-height:1.8; color:var(--ink2); }
  .bar{
    height:6px;
    border-radius:999px;
    background:#EFEDE7;
    overflow:hidden;
    margin-top:18px;
  }
  .bar > i{
    display:block;
    height:100%;
    width:var(--p,0%);
    border-radius:999px;
    background:linear-gradient(90deg,var(--brand),var(--brand-deep));
  }
  .bar-label{
    display:flex;
    justify-content:space-between;
    font-size:13px;
    color:var(--ink2);
    margin-top:10px;
    font-variant-numeric:tabular-nums;
  }

  /* ============ 图文两栏 ============ */
  .split{ display:grid; gap:32px; align-items:start; }
  @media (min-width:1024px){
    .split{ grid-template-columns:5fr 7fr; gap:48px; align-items:center; }
  }
  .split-media{ position:relative; }
  .split-media img{
    width:100%;
    aspect-ratio:4 / 3;
    object-fit:cover;
    border-radius:var(--radius-img);
    border:1px solid var(--line);
  }
  .split-media figcaption{
    margin-top:12px;
    font-size:13px;
    line-height:1.7;
    color:var(--ink2);
  }
  .split-note{
    position:absolute;
    left:16px; bottom:16px;
    background:var(--paper2);
    border:1px solid var(--line);
    border-radius:12px;
    padding:12px 16px;
    box-shadow:var(--shadow-1);
  }
  .split-note strong{ display:block; font-size:20px; font-weight:700; color:var(--brand); line-height:1.2; }
  .split-note span{ font-size:12px; color:var(--ink2); }

  .check-list{
    border-left:4px solid var(--brand);
    padding-left:20px;
    display:grid;
    gap:18px;
  }
  .check-list li strong{
    display:block;
    font-size:17px;
    font-weight:600;
    line-height:1.5;
    margin-bottom:4px;
  }
  .check-list li p{ font-size:15px; line-height:1.8; color:var(--ink2); }

  /* ============ FAQ ============ */
  .faq-wrap{ display:grid; gap:24px; }
  @media (min-width:1024px){
    .faq-wrap{ grid-template-columns:4fr 8fr; gap:48px; }
  }
  .faq-aside h2{
    font-size:25px;
    line-height:1.32;
    font-weight:600;
    margin-bottom:12px;
  }
  @media (min-width:1024px){
    .faq-aside{ position:sticky; top:calc(var(--header-h) + 32px); }
    .faq-aside h2{ font-size:28px; }
  }
  .faq-aside p{ font-size:15px; line-height:1.8; color:var(--ink2); max-width:320px; }

  .faq-list{ 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:18px;
    background:none;
    border:0;
    padding:22px 0;
    text-align:left;
    font-size:17px;
    font-weight:600;
    line-height:1.6;
    color:var(--ink);
    cursor:pointer;
    transition:color .2s ease;
  }
  .faq-q:hover{ color:var(--brand); }
  .faq-item.is-open .faq-q{ color:var(--brand); }
  .faq-icon{
    position:relative;
    width:18px; height:18px;
    flex:none;
    color:currentColor;
    transition:transform .2s ease;
  }
  .faq-icon::before,.faq-icon::after{
    content:"";
    position:absolute;
    background:currentColor;
    border-radius:2px;
  }
  .faq-icon::before{ left:0; top:8px; width:18px; height:2px; }
  .faq-icon::after{ left:8px; top:0; width:2px; height:18px; }
  .faq-item.is-open .faq-icon{ transform:rotate(45deg); }
  .faq-a{
    overflow:hidden;
    max-height:0;
    transition:max-height .28s ease;
  }
  .faq-a-inner{
    padding:0 0 22px;
    font-size:15px;
    line-height:1.85;
    color:var(--ink2);
    max-width:680px;
  }

  /* ============ 底部 CTA 带 ============ */
  .cta-band{
    position:relative;
    overflow:hidden;
    background:var(--dark);
    color:#fff;
  }
  .cta-band::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:url("/assets/images/backpic/back-2.webp");
    background-size:cover;
    background-position:center;
    opacity:.12;
    pointer-events:none;
  }
  .cta-inner{
    position:relative;
    z-index:1;
    display:grid;
    gap:24px;
    padding:56px 0;
    align-items:center;
  }
  @media (min-width:1024px){
    .cta-inner{ grid-template-columns:1fr auto; padding:72px 0; gap:40px; }
  }
  .cta-inner h2{
    font-size:23px;
    line-height:1.35;
    font-weight:600;
    margin-bottom:10px;
    color:#fff;
  }
  @media (min-width:1024px){ .cta-inner h2{ font-size:28px; } }
  .cta-inner p{ font-size:15px; line-height:1.8; color:rgba(255,255,255,.72); max-width:520px; }
  .cta-actions{ display:flex; flex-wrap:wrap; align-items:center; gap:16px; }
  .cta-link{
    font-size:15px;
    font-weight:600;
    color:rgba(255,255,255,.86);
    border-bottom:1px solid rgba(255,255,255,.35);
    padding-bottom:2px;
    transition:color .18s ease, border-color .18s ease;
  }
  .cta-link:hover{ color:#fff; border-color:var(--brand); }

  /* ============ 页脚 ============ */
  .site-footer{
    background:var(--dark);
    color:rgba(255,255,255,.72);
    padding-top:60px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:32px;
    padding-bottom:48px;
  }
  @media (min-width:768px){ .footer-grid{ grid-template-columns:repeat(2,1fr); } }
  @media (min-width:1024px){ .footer-grid{ grid-template-columns:2fr 1fr 1fr 1fr 1fr; gap:40px; } }
  .footer-brand .logo{ color:#fff; margin-bottom:16px; }
  .footer-brand p{
    font-size:14px;
    line-height:1.8;
    color:rgba(255,255,255,.72);
    max-width:280px;
    margin-bottom:14px;
  }
  .kw-link{
    display:inline-block;
    font-size:14px;
    color:#fff;
    border-bottom:1px solid rgba(255,255,255,.3);
    padding-bottom:2px;
    transition:border-color .18s ease, color .18s ease;
  }
  .kw-link:hover{ border-color:var(--brand); }
  .footer-col h3{
    font-size:15px;
    font-weight:600;
    color:#fff;
    margin-bottom:16px;
  }
  .footer-col ul{ display:grid; gap:10px; }
  .footer-col a{
    font-size:14px;
    line-height:1.7;
    color:rgba(255,255,255,.72);
    transition:color .18s ease;
  }
  .footer-col a:hover{ color:#fff; text-decoration:underline; }
  .footer-bottom{
    display:flex;
    flex-wrap:wrap;
    justify-content:space-between;
    gap:12px 24px;
    padding:22px 0 28px;
    border-top:1px solid rgba(255,255,255,.08);
    font-size:13px;
    line-height:1.7;
    color:rgba(255,255,255,.6);
  }
  .footer-bottom a{ color:rgba(255,255,255,.8); transition:color .18s ease; }
  .footer-bottom a:hover{ color:#fff; }

  /* ============ 移动端抽屉 ============ */
  .drawer{
    position:fixed;
    inset:0;
    z-index:90;
    background:var(--paper);
    display:flex;
    flex-direction:column;
    padding:16px var(--pad-x) calc(20px + env(safe-area-inset-bottom,0px));
    overflow-y:auto;
  }
  .drawer[hidden]{ display:none; }
  .drawer-top{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding-bottom:18px;
    border-bottom:1px solid var(--line);
  }
  .drawer-close{
    width:44px; height:44px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    border:1px solid var(--line);
    background:var(--paper2);
    border-radius:10px;
    cursor:pointer;
    font-size:20px;
    line-height:1;
    color:var(--ink2);
    transition:border-color .18s ease, color .18s ease;
  }
  .drawer-close:hover{ border-color:var(--brand); color:var(--brand); }
  .drawer-links{
    flex:1;
    display:flex;
    flex-direction:column;
    padding:8px 0 16px;
  }
  .drawer-links a{
    font-size:21px;
    font-weight:600;
    line-height:1.5;
    padding:15px 0;
    border-bottom:1px solid var(--line);
    color:var(--ink);
    transition:color .18s ease;
  }
  .drawer-links a:hover{ color:var(--brand); }
  .drawer-links a.is-active{ color:var(--brand); }
  .drawer-cta{ margin-top:16px; }
  .drawer-cta .btn{ width:100%; }