/* roulang page: index */
:root{
  --ink:#101010;
  --ink-70:rgba(16,16,16,.70);
  --ink-45:rgba(16,16,16,.45);
  --ink-20:rgba(16,16,16,.20);
  --paper:#F7F4EF;
  --paper-2:#EFE9E1;
  --accent:#FF4A1C;
  --accent-2:#1F6F5C;
  --line:rgba(16,16,16,.12);
  --shadow:0 18px 40px -24px rgba(16,16,16,.35);
  --r-card:4px;
  --r-screen:16px;
  --r-pill:999px;
  --serif:'Noto Serif SC','Source Han Serif SC','Songti SC','SimSun',serif;
  --sans:'PingFang SC','HarmonyOS Sans','Noto Sans SC','Microsoft YaHei',sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;background:transparent}
a:hover{color:inherit}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;line-height:inherit;margin:0}
h1,h2,h3,h4,p,ul,ol,figure,blockquote,dl{margin:0}
ul,ol{padding:0;list-style:none}
figure{margin:0}
input,textarea,select{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
::selection{background:var(--accent);color:#fff}

.container{width:100%;max-width:1280px;margin:0 auto;padding:0 40px}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,244,239,.86);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .22s ease,background .22s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line)}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:72px;transition:height .22s ease;
}
.site-header.is-scrolled .nav-wrap{height:60px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:10px;height:10px;border-radius:2px;background:var(--accent);flex:none;
  transition:transform .2s ease;
}
.logo:hover .logo-mark{transform:rotate(45deg)}
.logo-text{
  font-family:var(--serif);font-weight:700;font-size:20px;letter-spacing:-.01em;
  line-height:1;white-space:nowrap;
}
.main-nav{display:flex;align-items:center;gap:34px}
.nav-link{
  position:relative;font-size:15px;color:var(--ink-70);padding:6px 0;
  transition:color .16s ease;white-space:nowrap;
}
.nav-link::after{
  content:'';position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:center;
  transition:transform .18s cubic-bezier(.22,.61,.36,1);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-tools{display:flex;align-items:center;gap:6px;flex:none}
.icon-btn{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-pill);color:var(--ink-70);font-size:16px;
  transition:color .16s ease,background .16s ease;
}
.icon-btn:hover{color:var(--ink);background:var(--paper-2)}
.icon-btn:active{background:var(--ink-20)}
.menu-toggle{display:none}

/* ---------- 抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:90;background:var(--paper);
  display:flex;flex-direction:column;padding:20px 18px 28px;
  transform:translateY(-100%);opacity:0;visibility:hidden;
  transition:transform .32s cubic-bezier(.22,.61,.36,1),opacity .32s ease,visibility .32s ease;
}
.drawer.is-open{transform:translateY(0);opacity:1;visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:52px}
.drawer-close{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  font-size:22px;color:var(--ink);border-radius:var(--r-pill);
  transition:background .16s ease;
}
.drawer-close:hover{background:var(--paper-2)}
.drawer-nav{margin-top:22px;flex:1}
.drawer-nav a{
  display:block;font-family:var(--serif);font-size:25px;font-weight:600;line-height:1.4;
  padding:20px 0;border-bottom:1px solid var(--line);
  transition:color .16s ease,padding-left .16s ease;
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--accent);padding-left:6px}
.drawer-foot{font-size:13px;color:var(--ink-45);line-height:1.7;border-top:1px solid var(--line);padding-top:18px}

/* ---------- 通用区块 ---------- */
.section{padding:120px 0}
.section-tight{padding:96px 0}
.section-alt{background:var(--paper-2)}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:48px;flex-wrap:wrap;
}
.section-head h2{
  font-family:var(--serif);font-weight:600;font-size:clamp(23px,2.6vw,32px);
  line-height:1.32;letter-spacing:-.01em;
}
.section-head h2::before{
  content:'';display:block;width:3px;height:18px;background:var(--accent);margin-bottom:10px;
}
.section-head .head-side{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.section-sub{margin-top:12px;font-size:15px;color:var(--ink-45);max-width:660px;line-height:1.8}
.text-cta{
  font-size:14px;color:var(--ink-70);border-bottom:1px solid var(--ink-20);
  padding-bottom:2px;transition:color .16s ease,border-color .16s ease;
}
.text-cta:hover{color:var(--ink);border-color:var(--ink)}
.badge-cat{
  display:inline-block;font-size:12px;line-height:1.6;color:var(--accent-2);
  background:rgba(31,111,92,.1);border-radius:2px;padding:2px 8px;
}
.badge-soft{
  display:inline-block;font-size:12px;line-height:1.6;color:var(--ink-70);
  background:var(--paper-2);border-radius:2px;padding:2px 8px;
}
.badge-time{
  position:absolute;top:10px;right:10px;z-index:3;
  background:rgba(16,16,16,.72);color:#F7F4EF;font-size:12px;line-height:1.6;
  padding:2px 8px;border-radius:2px;font-variant-numeric:tabular-nums;
  -webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
}
.status-dot{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-45);
}
.status-dot i{width:6px;height:6px;border-radius:50%;background:var(--accent-2);display:inline-block}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;line-height:1.6;
  color:var(--accent-2);background:rgba(31,111,92,.1);
  padding:5px 10px;border-radius:2px;margin-bottom:20px;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--accent-2);display:inline-block}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:background .16s ease,color .16s ease,border-color .16s ease;
}
.btn .arrow{transition:transform .16s ease}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:#000;color:#fff}
.btn-primary:hover .arrow{transform:translateX(2px)}
.btn-primary:active{background:#2a2a2a}
.btn-ghost{border:1px solid var(--ink);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);color:var(--paper)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}

/* ---------- Hero ---------- */
.hero{position:relative;padding:76px 0 88px;overflow:hidden;border-bottom:1px solid var(--line)}
.hero::before{
  content:'';position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(16,16,16,.035) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(16,16,16,.035) 1px,transparent 1px);
  background-size:64px 64px;
}
.hero .container{position:relative;z-index:2}
.hero-grid{align-items:center}
.hero-title{
  font-family:var(--serif);font-weight:900;
  font-size:clamp(32px,4.4vw,56px);line-height:1.14;letter-spacing:-.02em;
  margin-top:8px;
}
.hero-sub{margin-top:22px;font-size:17px;line-height:1.9;color:var(--ink-70);max-width:560px}
.hero-cta{margin-top:32px;display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:flex;flex-wrap:wrap;margin-top:42px}
.hero-stats li{padding:0 22px;border-left:1px solid var(--line)}
.hero-stats li:first-child{padding-left:0;border-left:0}
.hero-stats strong{
  display:block;font-family:var(--serif);font-weight:700;font-size:26px;line-height:1.25;
  font-variant-numeric:tabular-nums;
}
.hero-stats span{font-size:13px;color:var(--ink-45);white-space:nowrap}
.hero-stack{
  display:flex;align-items:center;justify-content:flex-end;gap:18px;
  padding:10px 0 14px;min-height:400px;
}
.screen-card{
  position:relative;flex:1 1 0;max-width:210px;aspect-ratio:3/4;
  border-radius:var(--r-screen);overflow:hidden;
  border:1px solid var(--line);background:var(--paper-2);
  box-shadow:var(--shadow);
  transition:transform .3s cubic-bezier(.22,.61,.36,1);
}
.screen-card img{width:100%;height:100%;object-fit:cover}
.screen-card.sc-1{transform:rotate(-2deg) translateY(14px)}
.screen-card.sc-2{transform:translateY(-10px)}
.screen-card.sc-3{transform:rotate(2deg) translateY(18px)}
.screen-card:hover{transform:rotate(0) translateY(-4px)}
.hero-caption{margin-top:16px;font-size:13px;color:var(--ink-45);text-align:right}

/* ---------- 横滑轨道 ---------- */
.rail{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:6px;-ms-overflow-style:none;scrollbar-width:none;
  -webkit-overflow-scrolling:touch;
}
.rail::-webkit-scrollbar{display:none}
.rail-card{flex:0 0 calc((100% - 80px)/4.5);scroll-snap-align:start}
.rail-card-narrow{flex:0 0 340px;scroll-snap-align:start}
.rail-progress{margin-top:18px;height:2px;background:var(--line);border-radius:2px;overflow:hidden}
.rail-progress span{display:block;height:100%;width:12%;background:var(--ink);transition:width .12s linear}
.v-card{
  position:relative;display:block;aspect-ratio:3/4;border-radius:var(--r-screen);
  overflow:hidden;border:1px solid var(--line);background:var(--paper-2);
}
.v-card img{width:100%;height:100%;object-fit:cover;transition:transform .4s cubic-bezier(.22,.61,.36,1)}
.v-card::after{
  content:'';position:absolute;inset:0;z-index:1;
  background:linear-gradient(to top,rgba(16,16,16,.62),rgba(16,16,16,0) 56%);
}
.v-card:hover img{transform:scale(1.04)}
.v-card:hover::after{background:linear-gradient(to top,rgba(16,16,16,.72),rgba(16,16,16,.12) 70%)}
.v-play{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);z-index:2;
  width:46px;height:46px;border-radius:50%;border:1px solid rgba(247,244,239,.72);
  display:flex;align-items:center;justify-content:center;color:#F7F4EF;font-size:13px;
  transition:background .2s ease,border-color .2s ease;
}
.v-card:hover .v-play{background:var(--accent);border-color:transparent}
.v-card .badge-cat{
  position:absolute;left:12px;top:12px;z-index:3;
  background:rgba(247,244,239,.92);color:var(--accent-2);
}
.v-foot{
  position:absolute;left:14px;right:14px;bottom:12px;z-index:3;
  color:#F7F4EF;font-size:14px;line-height:1.5;
}

/* ---------- 编号清单 ---------- */
.check-list{border-top:1px solid var(--line)}
.list-item{
  display:grid;grid-template-columns:96px 1fr 32px;align-items:center;gap:24px;
  padding:26px 18px;border-bottom:1px solid var(--line);border-radius:var(--r-card);
  transition:background .2s ease,transform .2s ease;
}
.list-item:hover{background:var(--paper-2);transform:translateX(4px)}
.list-num{
  font-family:var(--serif);font-size:44px;font-weight:700;line-height:1;
  color:transparent;-webkit-text-stroke:1px var(--ink-20);
  font-variant-numeric:tabular-nums;transition:-webkit-text-stroke-color .2s ease;
}
.list-item:hover .list-num{-webkit-text-stroke-color:var(--accent)}
.list-body h3{font-size:19px;font-weight:600;line-height:1.45}
.list-body p{margin-top:6px;font-size:14px;color:var(--ink-45);line-height:1.75}
.list-arrow{
  font-size:18px;color:var(--ink-20);text-align:right;
  transition:color .2s ease,transform .2s ease;
}
.list-item:hover .list-arrow{color:var(--accent);transform:translateX(3px)}

/* ---------- 口碑 ---------- */
.voice-card{
  flex:0 0 340px;background:var(--paper-2);border-radius:var(--r-card);
  padding:24px 24px 22px;border:1px solid transparent;
  transition:border-color .2s ease,transform .2s ease;
}
.voice-card:hover{border-color:var(--line);transform:translateY(-2px)}
.voice-who{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--ink-45);margin-bottom:12px;
}
.stars{color:var(--accent);font-size:12px;letter-spacing:2px}
.voice-text{font-size:15px;line-height:1.85}
.voices-rail{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:8px;scrollbar-width:none;-ms-overflow-style:none}
.voices-rail::-webkit-scrollbar{display:none}

/* ---------- 内容卡 ---------- */
.post-grid .cell{margin-bottom:28px}
.post-card{
  display:flex;flex-direction:column;height:100%;
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  background:var(--paper);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--ink-20)}
.post-cover{
  aspect-ratio:16/10;background:var(--paper-2) center/cover no-repeat;
  position:relative;border-bottom:1px solid var(--line);
}
.post-grid .cell:nth-child(3n+1) .post-cover{background-image:url('/assets/images/coverpic/cover-1.png')}
.post-grid .cell:nth-child(3n+2) .post-cover{background-image:url('/assets/images/coverpic/cover-2.png')}
.post-grid .cell:nth-child(3n+3) .post-cover{background-image:url('/assets/images/coverpic/cover-3.png')}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:12px;flex:1}
.post-body .badge-cat{align-self:flex-start}
.post-title{
  font-size:18px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-excerpt{
  font-size:14px;color:var(--ink-45);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--ink-45);font-variant-numeric:tabular-nums;
}
.post-meta .go{color:var(--ink-45);transition:color .16s ease,transform .16s ease}
.post-card:hover .post-meta .go{color:var(--accent);transform:translateX(3px)}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-card);
  min-height:322px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;text-align:center;color:var(--ink-45);font-size:14px;padding:40px 24px;
}
.empty-state a{color:var(--ink);border-bottom:1px solid var(--ink-20);padding-bottom:2px;font-size:14px}
.empty-state a:hover{border-color:var(--accent);color:var(--accent)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;font-size:17px;font-weight:600;text-align:left;line-height:1.6;
  transition:color .16s ease;
}
.faq-q:hover{color:var(--accent)}
.faq-icon{flex:none;width:16px;height:16px;position:relative}
.faq-icon::before,.faq-icon::after{
  content:'';position:absolute;background:var(--ink);transition:transform .18s ease,background .18s ease;
}
.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::after{transform:scaleY(0)}
.faq-item.is-open .faq-icon::before{background:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-a-inner{padding:0 0 24px;max-width:760px;font-size:16px;line-height:1.9;color:var(--ink-70)}
.faq-a-inner p+p{margin-top:10px}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--ink);color:var(--paper);border-radius:var(--r-card);
  padding:48px;display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-family:var(--serif);font-weight:600;font-size:clamp(22px,2.4vw,30px);line-height:1.3}
.cta-band p{margin-top:12px;font-size:14px;line-height:1.8;color:rgba(247,244,239,.66);max-width:520px}
.cta-band .btn-primary{background:var(--paper);color:var(--ink)}
.cta-band .btn-primary:hover{background:#fff;color:var(--ink)}
.cta-band .btn-primary:active{background:var(--paper-2)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(247,244,239,.72);margin-top:96px;padding-top:72px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-weight:700;font-size:20px;color:#F7F4EF}
.footer-brand .logo-mark{background:var(--accent)}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;max-width:320px}
.footer-col-title{font-size:13px;color:rgba(247,244,239,.7);margin-bottom:16px}
.footer-links a{display:block;font-size:14px;padding:6px 0;color:rgba(247,244,239,.72);transition:color .16s ease}
.footer-links a:hover{color:#F7F4EF;text-decoration:underline;text-underline-offset:3px}
.footer-links span{display:block;font-size:14px;padding:6px 0}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.14);padding:22px 0;
  font-size:12px;color:rgba(247,244,239,.5);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom a{color:rgba(247,244,239,.6);transition:color .16s ease}
.footer-bottom a:hover{color:#F7F4EF}

/* ---------- 移动端吸附 CTA ---------- */
.mobile-cta{display:none}

/* ---------- 入场动效 ---------- */
.reveal{
  opacity:0;transform:translateY(14px);
  transition:opacity .42s cubic-bezier(.22,.61,.36,1),transform .42s cubic-bezier(.22,.61,.36,1);
}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .container{padding:0 28px}
  .section{padding:88px 0}
  .section-tight{padding:72px 0}
  .section-head{margin-bottom:36px}
  .main-nav{display:none}
  .menu-toggle{display:inline-flex}
  .hero{padding:56px 0 64px}
  .hero-stack{justify-content:center;min-height:auto;margin-top:40px;padding:0}
  .screen-card{max-width:180px}
  .hero-caption{text-align:center}
  .rail-card{flex:0 0 calc((100% - 40px)/3.2)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .cta-band{padding:40px}
}
@media (max-width:767px){
  body{font-size:16px}
  .section{padding:64px 0}
  .section-tight{padding:56px 0}
  .hero{padding:44px 0 56px}
  .hero-stats li{padding:0 16px}
  .hero-stats strong{font-size:22px}
  .list-item{grid-template-columns:60px 1fr 24px;gap:16px;padding:22px 10px}
  .list-num{font-size:32px}
  .rail-card{flex:0 0 calc((100% - 20px)/1.4)}
  .voice-card{flex:0 0 280px}
  .cta-band{padding:32px 24px}
  .cta-band .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .site-footer{padding-top:56px;margin-top:72px}
}
@media (max-width:575px){
  .container{padding:0 18px}
  .logo-text{font-size:17px}
  .hero-stack{gap:12px}
  .screen-card{max-width:120px;border-radius:12px}
  .rail-card{flex:0 0 calc((100% - 20px)/1.15)}
  .hero-caption{font-size:12px}
  .post-grid .cell{margin-bottom:20px}
  .faq-q{font-size:16px;padding:18px 0}
  .mobile-cta{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:70;
    height:64px;align-items:center;justify-content:space-between;gap:12px;
    padding:0 18px;background:rgba(247,244,239,.96);
    -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
    border-top:1px solid var(--line);
  }
  .mobile-cta span{font-size:13px;color:var(--ink-70);line-height:1.4}
  .mobile-cta .btn{height:40px;padding:0 20px;font-size:14px}
  body{padding-bottom:76px}
}
@media (max-width:400px){
  .hero-stats li{padding:0 12px;flex:1 1 45%;border-left:0;padding-left:0}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink:#101010;
  --ink-70:rgba(16,16,16,.70);
  --ink-45:rgba(16,16,16,.45);
  --ink-20:rgba(16,16,16,.20);
  --paper:#F7F4EF;
  --paper-2:#EFE9E1;
  --accent:#FF4A1C;
  --accent-2:#1F6F5C;
  --line:rgba(16,16,16,.12);
  --line-soft:rgba(255,255,255,.14);
  --radius:4px;
  --radius-lg:16px;
  --shadow-hover:0 18px 40px -24px rgba(16,16,16,.35);
  --container:1280px;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"PingFang SC","HarmonyOS Sans","Noto Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.9;
  font-weight:400;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .16s ease,border-color .16s ease,background-color .16s ease;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px;}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:700;letter-spacing:-.02em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 40px;
}
.grid-x{display:flex;flex-wrap:wrap;}
.cell{flex:1 1 auto;min-width:0;}
@media (min-width:1024px){
  .large-8{flex:0 0 66.6667%;max-width:66.6667%;}
  .large-4{flex:0 0 33.3333%;max-width:33.3333%;}
  .large-6{flex:0 0 50%;max-width:50%;}
  .grid-margin-x{margin-left:-12px;margin-right:-12px;}
  .grid-margin-x > .cell{padding-left:12px;padding-right:12px;}
}
@media (min-width:768px) and (max-width:1023px){
  .medium-6{flex:0 0 50%;max-width:50%;}
}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,244,239,.88);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,height .2s ease,background-color .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:72px;
  transition:height .2s ease;
}
.site-header.is-scrolled .header-inner{height:60px;}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-serif);
  font-weight:900;
  font-size:19px;
  letter-spacing:-.01em;
  color:var(--ink);
}
.logo-mark{
  width:12px;height:12px;flex:0 0 12px;
  background:var(--accent);
  border-radius:2px;
  display:inline-block;
}
.site-footer .logo-mark{background:var(--accent);}
.main-nav{display:flex;align-items:center;gap:34px;}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--ink-70);
  padding:6px 0;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:0;height:2px;
  background:var(--accent);
  transition:width .18s cubic-bezier(.22,.61,.36,1);
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.nav-link.is-active::after{width:100%;}
.header-actions{display:flex;align-items:center;gap:6px;}
.icon-btn{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  background:transparent;border:0;border-radius:999px;
  color:var(--ink-70);
  transition:color .16s ease,background-color .16s ease;
}
.icon-btn:hover{color:var(--ink);background:var(--paper-2);}
.icon-btn svg{width:19px;height:19px;stroke:currentColor;fill:none;stroke-width:1.6;}
.menu-toggle{display:none;}

/* search panel */
.search-panel{
  max-height:0;
  overflow:hidden;
  border-bottom:1px solid transparent;
  transition:max-height .26s cubic-bezier(.22,.61,.36,1),border-color .26s ease;
}
.search-panel.is-open{max-height:96px;border-bottom-color:var(--line);}
.search-form{
  display:flex;align-items:center;gap:16px;
  padding:14px 0 18px;
}
.search-form input{
  flex:1 1 auto;
  border:0;border-bottom:1px solid var(--line);
  background:transparent;
  font-family:var(--font-sans);font-size:16px;color:var(--ink);
  padding:8px 0;
  transition:border-color .16s ease;
}
.search-form input:focus{outline:none;border-bottom:2px solid var(--accent);}
.search-form input::placeholder{color:var(--ink-45);}

/* drawer */
.drawer{
  position:fixed;inset:0;
  background:var(--paper);
  z-index:90;
  transform:translateY(-100%);
  transition:transform .3s cubic-bezier(.22,.61,.36,1);
  display:flex;flex-direction:column;
  padding:22px 24px 32px;
}
.drawer.is-open{transform:translateY(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:44px;}
.drawer-nav{margin-top:28px;border-top:1px solid var(--line);}
.drawer-nav a{
  display:block;
  font-family:var(--font-serif);
  font-size:25px;
  font-weight:700;
  padding:20px 0;
  border-bottom:1px solid var(--line);
  color:var(--ink);
}
.drawer-nav a.is-active{color:var(--accent);}
.drawer-foot{margin-top:auto;font-size:13px;color:var(--ink-45);line-height:1.9;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--font-sans);
  font-size:15px;font-weight:600;
  height:48px;padding:0 28px;
  border-radius:999px;
  border:1px solid transparent;
  transition:background-color .16s ease,color .16s ease,border-color .16s ease,transform .16s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--ink);color:var(--paper);}
.btn-primary:hover{background:#262626;transform:translateX(2px);}
.btn-primary:hover .btn-arrow{transform:translateX(3px);}
.btn-arrow{display:inline-block;transition:transform .16s ease;}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:var(--paper);}
.btn-sm{height:40px;padding:0 22px;font-size:14px;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--ink-20);
  padding-bottom:2px;
}
.btn-text:hover{border-bottom:2px solid var(--ink);}

/* ---------- Tags & badges ---------- */
.tag{
  display:inline-block;
  font-size:12px;line-height:1.6;
  color:var(--accent-2);
  background:rgba(31,111,92,.12);
  padding:3px 9px;
  border-radius:2px;
}
.badge{
  display:inline-block;
  font-size:12px;
  background:rgba(16,16,16,.72);
  color:#F7F4EF;
  padding:3px 8px;
  border-radius:2px;
}
.status-dot{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:var(--ink-45);
}
.status-dot::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:var(--accent-2);
  display:inline-block;
}

/* ---------- Article head ---------- */
.article-hero{
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(rgba(16,16,16,.035) 1px,transparent 1px) 0 0/100% 88px,
    var(--paper);
  padding:36px 0 48px;
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-45);
  margin-bottom:26px;
}
.breadcrumb a{color:var(--ink-45);}
.breadcrumb a:hover{color:var(--ink);}
.breadcrumb .crumb-sep{color:var(--ink-20);}
.breadcrumb .crumb-current{color:var(--ink-45);}
.article-title{
  font-size:clamp(28px,4vw,44px);
  line-height:1.24;
  font-weight:900;
  max-width:900px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:22px;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--ink-45);
  font-variant-numeric:tabular-nums;
}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--ink-20);display:inline-block;}

/* ---------- Layout ---------- */
.article-wrap{padding:56px 0 0;}
.article-layout{display:flex;flex-wrap:wrap;align-items:flex-start;}

/* ---------- Article content ---------- */
.article-content{
  max-width:720px;
  font-size:17px;
  line-height:1.9;
  color:rgba(16,16,16,.86);
}
.article-content > *:first-child{margin-top:0;}
.article-content p{margin:0 0 1.4em;text-indent:0;}
.article-content h2{
  position:relative;
  font-size:clamp(22px,2.6vw,30px);
  font-weight:700;
  line-height:1.35;
  margin:40px 0 16px;
  padding-left:16px;
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:.35em;
  width:3px;height:18px;background:var(--accent);
}
.article-content h3{
  font-size:20px;
  font-weight:600;
  line-height:1.45;
  margin:32px 0 12px;
}
.article-content h4{
  font-family:var(--font-sans);
  font-size:17px;font-weight:600;
  margin:24px 0 10px;
}
.article-content blockquote{
  margin:28px 0;
  padding:4px 0 4px 20px;
  border-left:3px solid var(--line);
  font-size:16px;
  color:var(--ink-70);
}
.article-content ul,.article-content ol{margin:0 0 1.4em;padding-left:4px;}
.article-content ul li,.article-content ol li{position:relative;padding-left:22px;margin-bottom:10px;}
.article-content ul li::before{
  content:"";position:absolute;left:0;top:.75em;
  width:7px;height:7px;background:var(--paper);
  border:1px solid var(--ink);border-radius:1px;
}
.article-content ol{counter-reset:item;}
.article-content ol li{counter-increment:item;}
.article-content ol li::before{
  content:counter(item,decimal-leading-zero);
  position:absolute;left:0;top:0;
  font-family:var(--font-serif);
  font-size:14px;font-weight:700;color:var(--accent);
}
.article-content img{
  border-radius:var(--radius);
  margin:28px 0 8px;
  border:1px solid var(--line);
}
.article-content figure{margin:28px 0;}
.article-content figcaption{
  font-size:13px;color:var(--ink-45);
  margin-top:8px;line-height:1.7;
}
.article-content table{
  width:100%;
  border-collapse:collapse;
  margin:28px 0;
  font-size:15px;
}
.article-content th,.article-content td{
  border:1px solid var(--line);
  padding:11px 14px;
  text-align:left;
  vertical-align:top;
}
.article-content th{background:var(--paper-2);font-weight:600;}
.article-content a{
  color:var(--ink);
  border-bottom:1px solid var(--accent);
}
.article-content a:hover{background:rgba(255,74,28,.08);}
.article-content hr{border:0;border-top:1px solid var(--line);margin:36px 0;}

.article-foot{
  max-width:720px;
  margin-top:44px;
  padding-top:28px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.article-foot p{font-size:13px;color:var(--ink-45);}

.empty-state{
  max-width:720px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:56px 32px;
  text-align:center;
  background:var(--paper-2);
}
.empty-state h2{font-size:24px;margin-bottom:12px;padding:0;}
.empty-state h2::before{display:none;}
.empty-state p{font-size:15px;color:var(--ink-45);margin-bottom:22px;}

/* ---------- Sidebar ---------- */
.sidebar{
  padding-left:40px;
}
.sidebar-inner{
  position:sticky;
  top:96px;
}
.side-block{margin-bottom:34px;}
.side-title{
  font-family:var(--font-sans);
  font-size:13px;
  font-weight:600;
  color:var(--ink-45);
  letter-spacing:.08em;
  text-transform:uppercase;
  padding-bottom:10px;
  border-bottom:1px solid var(--line);
  margin-bottom:14px;
}
.toc-list a{
  display:block;
  font-size:14px;
  line-height:1.65;
  color:var(--ink-70);
  padding:7px 0 7px 12px;
  border-left:2px solid transparent;
  transition:color .16s ease,border-color .16s ease;
}
.toc-list a:hover{color:var(--ink);}
.toc-list a.is-current{color:var(--ink);font-weight:600;border-left-color:var(--accent);}
.hot-list li{border-bottom:1px solid var(--line);}
.hot-list li:last-child{border-bottom:0;}
.hot-list a{
  display:block;
  font-size:14px;
  line-height:1.7;
  color:var(--ink-70);
  padding:11px 0;
}
.hot-list a:hover{color:var(--ink);}
.side-hint{
  background:var(--paper-2);
  border-radius:var(--radius);
  padding:18px;
  font-size:13px;
  line-height:1.8;
  color:var(--ink-70);
}

/* ---------- Related ---------- */
.related{
  margin-top:96px;
  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;
  flex-wrap:wrap;
}
.section-head h2{
  position:relative;
  font-size:clamp(22px,2.6vw,30px);
  padding-left:16px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.4em;width:3px;height:18px;background:var(--accent);
}
.card-grid{display:flex;flex-wrap:wrap;margin:-12px;}
.card-grid > .cell{padding:12px;}
.card{
  display:flex;
  flex-direction:column;
  height:100%;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--paper);
  overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--ink-20);}
.card-media{
  position:relative;
  aspect-ratio:16/10;
  background:var(--paper-2);
  overflow:hidden;
}
.card-media img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .28s cubic-bezier(.22,.61,.36,1);
}
.card:hover .card-media img{transform:scale(1.04);}
.card-media::after{
  content:"";
  position:absolute;inset:0;
  background:rgba(16,16,16,0);
  transition:background-color .2s ease;
}
.card:hover .card-media::after{background:rgba(16,16,16,.35);}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto;}
.card-title{
  font-family:var(--font-sans);
  font-size:18px;
  font-weight:600;
  line-height:1.45;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-excerpt{
  font-size:14px;
  line-height:1.8;
  color:var(--ink-45);
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--ink-45);
  padding-top:12px;
  border-top:1px solid var(--line);
  font-variant-numeric:tabular-nums;
}
.card-foot .arrow{transition:transform .16s ease;}
.card:hover .card-foot .arrow{transform:translateX(4px);color:var(--accent);}

/* ---------- CTA band ---------- */
.cta-band{
  margin:96px 0 0;
}
.cta-inner{
  background:var(--ink);
  color:var(--paper);
  border-radius:var(--radius);
  padding:44px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-inner h2{
  color:var(--paper);
  font-size:clamp(22px,2.4vw,30px);
  margin-bottom:10px;
}
.cta-inner p{color:rgba(247,244,239,.68);font-size:14px;}
.cta-inner .btn-primary{background:var(--paper);color:var(--ink);}
.cta-inner .btn-primary:hover{background:#fff;}

/* ---------- Footer ---------- */
.site-footer{
  margin-top:120px;
  background:var(--ink);
  color:var(--paper);
  padding:72px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  font-family:var(--font-serif);
  font-size:19px;font-weight:900;
  margin-bottom:16px;
}
.footer-desc{
  font-size:14px;line-height:1.85;
  color:rgba(247,244,239,.68);
  max-width:340px;
}
.footer-col-title{
  font-size:13px;
  color:rgba(247,244,239,.70);
  letter-spacing:.06em;
  margin-bottom:16px;
}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a,.footer-links span{font-size:14px;color:rgba(247,244,239,.86);}
.footer-links a{border-bottom:1px solid transparent;align-self:flex-start;}
.footer-links a:hover{border-bottom-color:rgba(247,244,239,.6);}
.footer-bottom{
  border-top:1px solid var(--line-soft);
  padding:22px 0 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:12px;
  color:rgba(247,244,239,.55);
}

/* ---------- Mobile sticky CTA ---------- */
.mobile-cta{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:70;
  height:64px;
  background:rgba(247,244,239,.96);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-top:1px solid var(--line);
  align-items:center;
  justify-content:space-between;
  padding:0 18px;
  gap:14px;
}
.mobile-cta span{font-size:14px;font-weight:600;}
.mobile-cta .btn{height:40px;padding:0 20px;font-size:14px;background:var(--accent);color:#fff;}
.mobile-cta .btn:hover{background:#e5410f;}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .42s cubic-bezier(.22,.61,.36,1),transform .42s cubic-bezier(.22,.61,.36,1);}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- Responsive ---------- */
@media (max-width:1023px){
  .container{padding:0 28px;}
  .sidebar{padding-left:0;margin-top:56px;width:100%;}
  .sidebar-inner{position:static;}
  .article-wrap{padding-top:44px;}
}
@media (max-width:900px){
  .main-nav{display:none;}
  .menu-toggle{display:inline-flex;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:575px){
  body{font-size:16px;padding-bottom:76px;}
  .container{padding:0 18px;}
  .article-hero{padding:24px 0 32px;}
  .article-content{font-size:16px;}
  .article-content h2{margin:32px 0 14px;}
  .card-grid > .cell{flex:0 0 100%;max-width:100%;}
  .cta-inner{padding:32px 22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .mobile-cta{display:flex;}
  .site-footer{margin-top:80px;}
  .related{margin-top:64px;padding-top:40px;}
  .cta-band{margin-top:64px;}
}
@media (min-width:576px) and (max-width:1023px){
  .card-grid > .cell{flex:0 0 50%;max-width:50%;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --ink:#101010;
  --ink-70:rgba(16,16,16,.70);
  --ink-45:rgba(16,16,16,.45);
  --ink-20:rgba(16,16,16,.20);
  --paper:#F7F4EF;
  --paper-2:#EFE9E1;
  --accent:#FF4A1C;
  --accent-2:#1F6F5C;
  --line:rgba(16,16,16,.12);
  --radius:4px;
  --radius-lg:16px;
  --pill:999px;
  --shadow-hover:0 18px 40px -24px rgba(16,16,16,.35);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --sans:"PingFang SC","HarmonyOS Sans","Noto Sans SC","Microsoft YaHei",sans-serif;
  --sp-1:12px;
  --sp-2:20px;
  --sp-3:32px;
}

/* ============ 基础重置 ============ */
*,*::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:var(--sans);
  font-size:17px;
  line-height:1.88;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.drawer-open{overflow:hidden;}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
button{font-family:inherit;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:700;line-height:1.16;letter-spacing:-.02em;}
p{margin:0;}
table{border-collapse:collapse;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

/* 覆盖 Foundation 默认外观 */
body,button,input,select,textarea{font-family:var(--sans);}
a:hover,a:focus{color:inherit;}
button,.button{border-radius:var(--pill);}
h1,h2,h3,h4,p,ul,ol,table{margin-bottom:0;}
.row{margin-left:0;margin-right:0;}

/* ============ 容器与排版 ============ */
.container{
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding:0 40px;
}
.section{padding:120px 0;}
.section-tight{padding:88px 0;}
.section-h2{
  position:relative;
  font-size:clamp(22px,2.6vw,32px);
  font-weight:600;
  padding-left:16px;
  margin-bottom:var(--sp-2);
}
.section-h2::before{
  content:"";
  position:absolute;
  left:0;top:.28em;
  width:3px;height:18px;
  background:var(--accent);
}
.section-lead{
  max-width:760px;
  color:var(--ink-70);
  font-size:16px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--accent-2);
  background:rgba(31,111,92,.12);
  border-radius:2px;
  padding:4px 10px;
  margin-bottom:var(--sp-2);
}
.eyebrow .dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--accent-2);
}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:70;
  background:rgba(247,244,239,.86);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .28s ease,background .28s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  height:72px;
  transition:height .28s ease;
}
.site-header.is-scrolled .header-inner{height:60px;}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--serif);
  font-weight:900;
  font-size:19px;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.logo-mark{
  width:16px;height:16px;
  border-radius:50%;
  background:var(--accent);
  position:relative;
  flex:none;
}
.logo-mark::after{
  content:"";
  position:absolute;
  inset:5px;
  background:var(--paper);
  border-radius:50%;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:34px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--ink-70);
  padding:6px 0;
  white-space:nowrap;
  transition:color .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  height:2px;
  width:0;
  background:var(--accent);
  transition:width .18s ease;
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--ink);}
.nav-link.is-active::after{width:100%;}
.header-actions{
  display:flex;
  align-items:center;
  gap:6px;
  flex:none;
}
.icon-btn{
  width:44px;height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:transparent;
  border:0;
  color:var(--ink-70);
  font-size:16px;
  border-radius:50%;
  transition:color .2s ease,background .2s ease;
}
.icon-btn:hover{color:var(--ink);background:var(--paper-2);}
.icon-btn:active{background:var(--ink-20);}
.menu-toggle{display:none;}

/* 移动端抽屉 */
.drawer{
  position:fixed;
  inset:0;
  z-index:90;
  background:var(--paper);
  padding:24px 18px 40px;
  display:flex;
  flex-direction:column;
  transform:translateX(100%);
  transition:transform .32s cubic-bezier(.22,.61,.36,1);
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:20px;
  border-bottom:1px solid var(--line);
}
.drawer-nav{
  display:flex;
  flex-direction:column;
  margin-top:12px;
}
.drawer-nav a{
  font-family:var(--serif);
  font-size:26px;
  font-weight:700;
  padding:20px 0;
  border-bottom:1px solid var(--line);
  color:var(--ink);
}
.drawer-nav a.is-active{color:var(--accent);}
.drawer-foot{
  margin-top:auto;
  padding-top:28px;
  font-size:13px;
  color:var(--ink-45);
  line-height:2;
}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--ink-45);
  margin-bottom:26px;
}
.breadcrumb a{color:var(--ink-45);}
.breadcrumb a:hover{color:var(--ink);text-decoration:underline;}
.breadcrumb .sep{color:var(--ink-20);}
.breadcrumb .current{color:var(--ink-45);}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  padding:56px 0 96px;
  background-image:
    linear-gradient(rgba(16,16,16,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(16,16,16,.03) 1px,transparent 1px);
  background-size:64px 64px,64px 64px;
}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.08fr) minmax(0,.82fr);
  gap:72px;
  align-items:center;
}
.hero-title{
  font-size:clamp(30px,4.2vw,48px);
  font-weight:900;
  line-height:1.14;
  margin-bottom:24px;
}
.hero-title em{
  font-style:normal;
  color:var(--accent);
}
.hero-lead{
  font-size:16px;
  color:var(--ink-70);
  max-width:620px;
  margin-bottom:32px;
}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:16px;
  font-size:13px;
  color:var(--ink-45);
  font-variant-numeric:tabular-nums;
}
.hero-stats .bar{
  width:1px;height:12px;
  background:var(--ink-20);
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:34px;
}
.hero-media{
  position:relative;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  aspect-ratio:3/4;
  background:var(--paper-2);
  box-shadow:var(--shadow-hover);
}
.hero-media img{
  width:100%;height:100%;
  object-fit:cover;
}
.hero-media .badge-duration{
  position:absolute;
  top:14px;right:14px;
  background:rgba(16,16,16,.62);
  color:#F7F4EF;
  font-size:12px;
  padding:4px 10px;
  border-radius:2px;
  font-variant-numeric:tabular-nums;
}
.hero-media-cap{
  margin-top:14px;
  font-size:13px;
  color:var(--ink-45);
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 28px;
  border-radius:var(--pill);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--ink);
  color:var(--paper);
}
.btn-primary:hover{
  background:#000;
  color:var(--paper);
  transform:translateX(2px);
}
.btn-primary:hover .btn-arrow{transform:translateX(3px);}
.btn-ghost{
  background:transparent;
  color:var(--ink);
  border-color:var(--ink);
}
.btn-ghost:hover{
  background:var(--ink);
  color:var(--paper);
}
.btn-accent{
  background:var(--accent);
  color:#fff;
}
.btn-accent:hover{background:#e63f13;color:#fff;}
.btn-sm{height:40px;padding:0 22px;font-size:14px;}
.btn-arrow{transition:transform .2s ease;}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  border-bottom:1px solid var(--line);
  padding-bottom:2px;
  transition:border-color .16s ease;
}
.btn-text:hover{border-bottom-color:var(--ink);color:var(--ink);}

/* ============ 交替图文列表 ============ */
.alt-section{padding:96px 0 40px;}
.alt-list{
  border-top:1px solid var(--line);
  margin-top:48px;
}
.alt-item{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:64px;
  align-items:center;
  padding:56px 0;
  border-bottom:1px solid var(--line);
}
.alt-media{
  order:1;
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  aspect-ratio:4/3;
  background:var(--paper-2);
}
.alt-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .5s cubic-bezier(.22,.61,.36,1);
}
.alt-item:hover .alt-media img{transform:scale(1.04);}
.alt-body{order:2;}
.alt-item.is-flip .alt-media{order:2;}
.alt-item.is-flip .alt-body{order:1;}
.alt-index{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:13px;
  color:var(--ink-45);
  font-variant-numeric:tabular-nums;
  margin-bottom:14px;
}
.alt-index .num{
  font-family:var(--serif);
  font-size:24px;
  font-weight:900;
  color:var(--ink);
  line-height:1;
}
.alt-index .tag{
  font-size:12px;
  color:var(--accent-2);
  background:rgba(31,111,92,.12);
  border-radius:2px;
  padding:3px 9px;
}
.alt-title{
  font-family:var(--sans);
  font-size:20px;
  font-weight:600;
  line-height:1.45;
  margin-bottom:12px;
}
.alt-desc{
  font-size:15px;
  color:var(--ink-70);
  line-height:1.85;
  margin-bottom:20px;
}
.alt-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  padding-bottom:3px;
  border-bottom:1px solid var(--line);
  transition:border-color .16s ease,gap .16s ease;
}
.alt-link:hover{border-bottom-color:var(--ink);gap:12px;}

/* ============ 流程步骤 ============ */
.steps-section{
  background:var(--paper-2);
  padding:96px 0;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.steps-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;
  margin-top:48px;
  border-top:1px solid var(--line);
}
.step{
  padding:32px 28px 32px 0;
  border-right:1px solid var(--line);
}
.step:last-child{border-right:0;}
.step-num{
  font-family:var(--serif);
  font-size:34px;
  font-weight:900;
  line-height:1;
  color:var(--ink);
  margin-bottom:18px;
  display:block;
}
.step-title{
  font-size:17px;
  font-weight:600;
  margin-bottom:10px;
  font-family:var(--sans);
}
.step-desc{
  font-size:14px;
  color:var(--ink-70);
  line-height:1.8;
}

/* ============ 对照表 ============ */
.cmp-wrap{
  margin-top:44px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow-x:auto;
  background:var(--paper);
}
.cmp-table{
  width:100%;
  min-width:640px;
  font-size:15px;
}
.cmp-table th,
.cmp-table td{
  border-bottom:1px solid var(--line);
  border-right:1px solid var(--line);
  padding:18px 20px;
  text-align:left;
  vertical-align:top;
  line-height:1.75;
}
.cmp-table th:last-child,
.cmp-table td:last-child{border-right:0;}
.cmp-table tbody tr:last-child td{border-bottom:0;}
.cmp-table thead th{
  background:var(--paper-2);
  font-weight:600;
  font-size:14px;
  color:var(--ink);
  font-family:var(--sans);
}
.cmp-table tbody tr{transition:background .18s ease;}
.cmp-table tbody tr:hover{background:rgba(16,16,16,.025);}
.cmp-table td:first-child{font-weight:600;color:var(--ink);}

/* ============ 核对清单 ============ */
.check-section{padding:96px 0;}
.check-card{
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:30px 28px;
  height:100%;
  background:var(--paper);
  transition:box-shadow .24s ease,transform .24s ease,border-color .24s ease;
}
.check-card:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-2px);
  border-color:var(--ink-20);
}
.check-title{
  font-family:var(--sans);
  font-size:18px;
  font-weight:600;
  margin-bottom:18px;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
}
.check-list li{
  position:relative;
  padding-left:24px;
  font-size:15px;
  color:var(--ink-70);
  line-height:1.85;
  margin-bottom:12px;
}
.check-list li:last-child{margin-bottom:0;}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:8px;height:8px;
  background:transparent;
  border:1px solid var(--accent-2);
  border-radius:1px;
}

/* ============ FAQ ============ */
.faq-section{padding:96px 0 40px;}
.faq-list{
  margin-top:44px;
  max-width:920px;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  background:transparent;
  border:0;
  padding:24px 0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--ink);}
.faq-q .q-text{flex:1;}
.faq-q .q-icon{
  flex:none;
  width:20px;height:20px;
  position:relative;
  transition:transform .18s ease;
}
.faq-q .q-icon::before,
.faq-q .q-icon::after{
  content:"";
  position:absolute;
  background:var(--ink-45);
  transition:background .18s ease;
}
.faq-q .q-icon::before{left:0;top:9px;width:20px;height:1px;}
.faq-q .q-icon::after{left:9px;top:0;width:1px;height:20px;}
.faq-item.is-open .q-icon{transform:rotate(180deg);}
.faq-item.is-open .q-icon::after{opacity:0;}
.faq-item.is-open .q-icon::before{background:var(--accent);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .28s cubic-bezier(.22,.61,.36,1);
}
.faq-a-inner{
  max-width:760px;
  padding:0 0 26px;
  font-size:16px;
  line-height:1.9;
  color:var(--ink-70);
}

/* ============ CTA 条 ============ */
.cta-section{padding:40px 0 120px;}
.cta-inner{
  background:var(--ink);
  color:var(--paper);
  border-radius:var(--radius);
  padding:48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
}
.cta-title{
  font-size:clamp(22px,2.4vw,30px);
  font-weight:700;
  color:var(--paper);
  margin-bottom:10px;
}
.cta-sub{
  font-size:14px;
  color:rgba(247,244,239,.70);
  line-height:1.8;
}
.cta-inner .btn-primary{
  background:var(--paper);
  color:var(--ink);
  flex:none;
}
.cta-inner .btn-primary:hover{background:#fff;color:var(--ink);}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink);
  color:var(--paper);
  margin-top:96px;
  padding:72px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:48px;
  padding-bottom:56px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-family:var(--serif);
  font-weight:900;
  font-size:19px;
  margin-bottom:18px;
}
.site-footer .logo-mark{background:var(--accent);}
.site-footer .logo-mark::after{background:var(--ink);}
.footer-desc{
  font-size:14px;
  line-height:1.85;
  color:rgba(247,244,239,.66);
  max-width:320px;
}
.footer-col-title{
  font-size:13px;
  color:rgba(247,244,239,.70);
  margin-bottom:20px;
  letter-spacing:.02em;
}
.footer-links{
  display:flex;
  flex-direction:column;
  gap:12px;
}
.footer-links a,
.footer-links span{
  font-size:14px;
  color:rgba(247,244,239,.86);
  line-height:1.7;
}
.footer-links a:hover{
  color:#fff;
  text-decoration:underline;
  text-underline-offset:4px;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:22px 0 28px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:12px;
  color:rgba(247,244,239,.55);
}

/* ============ 移动端吸附 CTA ============ */
.mobile-cta{display:none;}

/* ============ 动效 ============ */
.reveal{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .42s cubic-bezier(.22,.61,.36,1),transform .42s cubic-bezier(.22,.61,.36,1);
  transition-delay:var(--d,0ms);
}
.reveal.is-in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .container{padding:0 28px;}
  .section{padding:88px 0;}
  .page-hero{padding:40px 0 72px;}
  .hero-grid{gap:44px;}
  .alt-item{gap:40px;padding:44px 0;}
  .steps-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .step:nth-child(2n){border-right:0;}
  .step{border-bottom:1px solid var(--line);}
  .step:nth-last-child(-n+2){border-bottom:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
  .cta-inner{padding:40px;gap:28px;}
}
@media (max-width:880px){
  .main-nav{display:none;}
  .menu-toggle{display:inline-flex;}
}
@media (max-width:768px){
  body{font-size:16px;padding-bottom:76px;}
  .container{padding:0 18px;}
  .section,.section-tight{padding:64px 0;}
  .site-header .header-inner{height:60px;}
  .site-header.is-scrolled .header-inner{height:56px;}
  .brand{font-size:17px;}
  .page-hero{padding:28px 0 56px;background-size:40px 40px,40px 40px;}
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:36px;}
  .hero-media{max-width:320px;}
  .hero-title{font-size:clamp(26px,7.4vw,34px);}
  .hero-lead{font-size:15px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{flex:1 1 auto;}
  .alt-item{
    grid-template-columns:minmax(0,1fr);
    gap:22px;
    padding:36px 0;
  }
  .alt-media,
  .alt-item.is-flip .alt-media{order:1;}
  .alt-body,
  .alt-item.is-flip .alt-body{order:2;}
  .alt-title{font-size:18px;}
  .steps-section{padding:64px 0;}
  .steps-grid{grid-template-columns:minmax(0,1fr);margin-top:32px;}
  .step{
    border-right:0;
    border-bottom:1px solid var(--line);
    padding:26px 0;
  }
  .step:nth-last-child(-n+2){border-bottom:1px solid var(--line);}
  .step:last-child{border-bottom:0;}
  .check-section{padding:64px 0;}
  .faq-section{padding:64px 0 24px;}
  .faq-q{font-size:16px;padding:20px 0;}
  .cta-section{padding:24px 0 72px;}
  .cta-inner{
    flex-direction:column;
    align-items:flex-start;
    padding:30px 22px;
    gap:22px;
  }
  .cta-inner .btn{width:100%;}
  .site-footer{margin-top:64px;padding-top:56px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:36px;padding-bottom:40px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .mobile-cta{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:14px;
    position:fixed;
    left:0;right:0;bottom:0;
    height:64px;
    padding:0 18px;
    background:rgba(247,244,239,.94);
    -webkit-backdrop-filter:blur(8px);
    backdrop-filter:blur(8px);
    border-top:1px solid var(--line);
    z-index:65;
  }
  .mobile-cta span{font-size:13px;color:var(--ink-70);}
  .mobile-cta .btn{height:40px;padding:0 20px;font-size:14px;flex:none;}
}
@media (max-width:520px){
  .hero-media{max-width:100%;}
  .alt-desc{font-size:14px;}
  .cmp-table th,.cmp-table td{padding:14px 14px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation:none !important;
    transition:none !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --ink:#101010;
  --ink-70:rgba(16,16,16,.70);
  --ink-45:rgba(16,16,16,.45);
  --ink-20:rgba(16,16,16,.20);
  --paper:#F7F4EF;
  --paper-2:#EFE9E1;
  --accent:#FF4A1C;
  --accent-2:#1F6F5C;
  --line:rgba(16,16,16,.12);
  --radius-card:4px;
  --radius-v:16px;
  --shadow-hover:0 18px 40px -24px rgba(16,16,16,.35);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --sans:"PingFang SC","HarmonyOS Sans","Noto Sans SC","Microsoft YaHei",sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
}
/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:700;line-height:1.2;letter-spacing:-.02em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
::selection{background:rgba(255,74,28,.18)}
/* ---------- layout ---------- */
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 40px}
.section{padding:120px 0}
.section-alt{background:var(--paper-2)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{font-size:clamp(22px,2.6vw,32px);padding-left:12px;border-left:3px solid var(--accent)}
.section-head h2.ink-line{border-left-color:var(--ink)}
.section-sub{margin-top:16px;font-size:16px;color:var(--ink-70);max-width:40em}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.08em;
  color:var(--accent-2);background:rgba(31,111,92,.12);
  border-radius:2px;padding:4px 10px;margin-bottom:18px;
}
/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,244,239,.82);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .24s var(--ease),background .24s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(247,244,239,.94)}
.header-inner{display:flex;align-items:center;gap:32px;height:72px;transition:height .24s var(--ease)}
.site-header.is-scrolled .header-inner{height:60px}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--serif);font-size:20px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;
}
.logo-mark{width:10px;height:10px;border-radius:2px;background:var(--accent);display:inline-block;flex:0 0 auto}
.main-nav{display:flex;align-items:center;gap:28px;margin:0 auto}
.nav-link{position:relative;font-size:15px;color:var(--ink-70);padding:6px 0;transition:color .18s var(--ease)}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--accent);transition:width .18s var(--ease)}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--ink)}
.nav-link.is-active::after{width:100%}
.header-actions{display:flex;align-items:center;gap:8px}
.icon-btn{
  width:44px;height:44px;display:grid;place-items:center;border-radius:999px;
  color:var(--ink-70);transition:background .18s var(--ease),color .18s var(--ease);
}
.icon-btn:hover{background:var(--paper-2);color:var(--ink)}
.icon-btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.6}
.nav-toggle{display:none}
.nav-toggle span{display:block;width:20px;height:1.6px;background:var(--ink);margin:4px 0}
/* ---------- drawer ---------- */
.nav-drawer{
  position:fixed;inset:0;z-index:90;background:var(--paper);
  padding:20px 22px 36px;display:flex;flex-direction:column;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
}
.nav-drawer.is-open{opacity:1;visibility:visible;transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line)}
.drawer-head .brand{font-size:19px}
.drawer-close{width:44px;height:44px;display:grid;place-items:center;font-size:26px;line-height:1;color:var(--ink)}
.drawer-close:hover{color:var(--accent)}
.drawer-links{margin-top:10px}
.drawer-links a{
  display:block;font-family:var(--serif);font-size:25px;font-weight:700;
  padding:20px 0;border-bottom:1px solid var(--line);color:var(--ink);
  transition:color .18s var(--ease);
}
.drawer-links a:hover,.drawer-links a.is-active{color:var(--accent)}
.drawer-foot{margin-top:auto;font-size:13px;color:var(--ink-45)}
/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:999px;
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:#2b2b2b;transform:translateY(-1px)}
.btn-primary::after{content:"→";opacity:0;margin-left:-6px;transform:translateX(-4px);transition:opacity .18s var(--ease),transform .18s var(--ease),margin .18s var(--ease)}
.btn-primary:hover::after{opacity:1;transform:none;margin-left:0}
.btn-ghost{border:1px solid var(--ink);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);color:var(--paper)}
.btn-paper{background:var(--paper);color:var(--ink)}
.btn-paper:hover{background:#ffffff;transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
/* ---------- hero ---------- */
.hero{padding-top:52px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-45);flex-wrap:wrap}
.breadcrumb a{transition:color .18s var(--ease)}
.breadcrumb a:hover{color:var(--ink);text-decoration:underline}
.breadcrumb em{font-style:normal;color:var(--ink-45)}
.hero-grid{
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:56px;align-items:center;margin-top:26px;padding-bottom:76px;
}
.hero h1{font-size:clamp(30px,4vw,46px);line-height:1.14;max-width:15em}
.hero-lead{margin-top:20px;font-size:17px;line-height:1.9;color:var(--ink-70);max-width:34em}
.hero-actions{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}
.hero-stats{display:flex;gap:18px;margin-top:38px;font-size:13px;color:var(--ink-45);flex-wrap:wrap;align-items:baseline}
.hero-stats span{display:inline-flex;align-items:baseline;gap:6px;padding-right:18px;border-right:1px solid var(--line)}
.hero-stats span:last-child{border-right:0;padding-right:0}
.hero-stats b{font-family:var(--serif);font-size:20px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums}
.hero-media img{
  width:100%;aspect-ratio:4/5;object-fit:cover;
  border-radius:var(--radius-v);border:1px solid var(--line);background:var(--paper-2);
}
.media-note{margin-top:12px;font-size:13px;color:var(--ink-45)}
/* ---------- chips ---------- */
.filter-bar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:36px}
.chip{
  height:38px;padding:0 18px;border-radius:999px;border:1px solid var(--line);
  font-size:14px;color:var(--ink-70);background:transparent;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
  min-width:44px;
}
.chip:hover{border-color:var(--ink-20);color:var(--ink);background:var(--paper-2)}
.chip.is-active{background:var(--ink);color:var(--paper);border-color:var(--ink)}
/* ---------- flow cards ---------- */
.flow-grid{display:grid;grid-template-columns:5fr 4fr 3fr;gap:24px;align-items:start}
.flow-col{display:grid;gap:24px}
.fcard{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.fcard:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.fcard-media{position:relative;overflow:hidden;background:var(--paper-2)}
.fcard-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s var(--ease)}
.fcard--tall .fcard-media img{aspect-ratio:3/4}
.fcard-media::after{content:"";position:absolute;inset:0;background:rgba(16,16,16,0);transition:background .3s var(--ease)}
.fcard:hover .fcard-media::after{background:rgba(16,16,16,.35)}
.fcard:hover .fcard-media img{transform:scale(1.04)}
.fcard-body{padding:20px}
.tag{
  display:inline-block;font-size:12px;color:var(--accent-2);
  background:rgba(31,111,92,.12);border-radius:2px;padding:3px 8px;margin-bottom:12px;
}
.fcard h3{font-family:var(--sans);font-size:18px;font-weight:600;line-height:1.5;letter-spacing:0}
.fcard p{margin-top:10px;font-size:14px;line-height:1.75;color:var(--ink-45)}
.fcard-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:16px;
  font-size:13px;color:var(--ink);padding-bottom:2px;
  border-bottom:1px solid transparent;transition:border-color .18s var(--ease),color .18s var(--ease);
}
.fcard-link:hover{border-bottom-color:var(--ink)}
.fcard-link span{font-variant-numeric:tabular-nums}
/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.steps li{border-top:1px solid var(--line);padding-top:22px}
.step-num{
  display:block;font-family:var(--serif);font-size:44px;font-weight:900;line-height:1;
  color:transparent;-webkit-text-stroke:1px var(--ink-20);font-variant-numeric:tabular-nums;
}
.steps h3{margin-top:14px;font-family:var(--sans);font-size:19px;font-weight:600;letter-spacing:0}
.steps p{margin-top:10px;font-size:14.5px;line-height:1.85;color:var(--ink-70)}
/* ---------- split ---------- */
.split{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:56px;align-items:center}
.split-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius-v);border:1px solid var(--line);background:var(--paper-2);
}
.split-body h2{font-size:clamp(22px,2.6vw,32px);padding-left:12px;border-left:3px solid var(--ink)}
.check-list{margin-top:26px}
.check-list li{
  display:flex;gap:14px;align-items:flex-start;
  padding:18px 0;border-bottom:1px solid var(--line);font-size:15px;line-height:1.85;
}
.check-list li:first-child{border-top:1px solid var(--line)}
.check-list li::before{
  content:"";flex:0 0 auto;width:6px;height:6px;background:var(--accent);
  margin-top:11px;border-radius:1px;
}
.check-list b{font-weight:600;color:var(--ink)}
.check-list em{font-style:normal;color:var(--ink-45)}
/* ---------- faq ---------- */
.faq{max-width:880px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 0;text-align:left;font-family:var(--sans);
  font-size:17px;font-weight:600;line-height:1.6;
  transition:color .18s var(--ease);
}
.faq-q:hover{color:var(--accent)}
.faq-icon{position:relative;width:16px;height:16px;flex:0 0 auto}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--ink);transition:transform .18s var(--ease),background .18s var(--ease)}
.faq-icon::before{left:0;top:7.5px;width:16px;height:1px}
.faq-icon::after{top:0;left:7.5px;width:1px;height:16px}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg)}
.faq-item.is-open .faq-q{color:var(--ink)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease)}
.faq-a-inner{padding-bottom:26px;max-width:760px;font-size:16px;line-height:1.9;color:var(--ink-70)}
/* ---------- cta ---------- */
.cta-bar{
  background:var(--ink);color:var(--paper);border-radius:var(--radius-card);
  padding:48px;display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-bar h2{color:var(--paper);font-size:clamp(22px,2.4vw,30px)}
.cta-bar p{margin-top:10px;font-size:14px;color:rgba(247,244,239,.66);max-width:38em}
/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:var(--paper);margin-top:96px;padding:72px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-size:19px;font-weight:700}
.footer-desc{margin-top:14px;font-size:14px;line-height:1.8;color:rgba(247,244,239,.65);max-width:32em}
.footer-col-title{font-size:13px;color:rgba(247,244,239,.7);margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px;font-size:14px}
.footer-links a{color:rgba(247,244,239,.85);transition:color .18s var(--ease)}
.footer-links a:hover{color:#fff;text-decoration:underline}
.footer-links span{color:rgba(247,244,239,.6)}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:rgba(247,244,239,.55);
}
/* ---------- sticky mobile cta ---------- */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;
  align-items:center;justify-content:space-between;gap:14px;
  height:64px;padding:0 18px;background:rgba(247,244,239,.94);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border-top:1px solid var(--line);
}
.sticky-cta span{font-size:13px;color:var(--ink-70)}
/* ---------- reveal ---------- */
.js .reveal{opacity:0;transform:translateY(14px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
.js .reveal.is-visible{opacity:1;transform:none}
/* ---------- responsive ---------- */
@media (max-width:1023px){
  .container{padding:0 28px}
  .section{padding:88px 0}
  .main-nav{display:none}
  .nav-toggle{display:grid;place-items:center}
  .hero-grid{grid-template-columns:1fr;gap:36px;padding-bottom:56px}
  .hero-media img{aspect-ratio:16/10}
  .flow-grid{grid-template-columns:1fr;gap:0}
  .flow-col{grid-template-columns:repeat(2,1fr);gap:24px;margin-bottom:24px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-bar{padding:36px}
}
@media (max-width:575px){
  body{padding-bottom:76px}
  .container{padding:0 18px}
  .section{padding:64px 0}
  .hero{padding-top:34px}
  .hero h1{font-size:clamp(26px,8vw,34px)}
  .hero-stats span{border-right:0;padding-right:0}
  .flow-col{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr;gap:0}
  .steps li{padding-top:20px;margin-bottom:24px}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:28px 22px}
  .cta-bar .btn{width:100%}
  .sticky-cta{display:flex}
  .site-footer{margin-top:64px;padding:56px 0 28px}
  .footer-grid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  .js .reveal{opacity:1;transform:none}
}