/* roulang page: index */
:root{
  --c-bg:#FAFAF7;
  --c-surface:#FFFFFF;
  --c-surface-2:#F2F3EC;
  --c-line:#E4E6DE;
  --c-ink:#101210;
  --c-ink-2:#1B1F1B;
  --c-muted:#6B736A;
  --c-brand:#C6F24E;
  --c-brand-deep:#A8D62F;
  --c-accent:#FF5A2B;
  --c-dark:#101210;
  --c-dark-text:#F4F5F0;
  --c-dark-muted:#9DA69B;
  --r-xs:8px;
  --r-sm:12px;
  --r-md:18px;
  --r-lg:24px;
  --r-full:999px;
  --sh-1:0 1px 2px rgba(16,18,16,.05),0 8px 24px -16px rgba(16,18,16,.18);
  --sh-2:0 18px 40px -20px rgba(16,18,16,.28);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px;
  --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:96px; --sp-10:128px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --header-h:72px;
  --tab-h:58px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","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(--font-cn);
  font-size:16.5px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
  padding-top:var(--header-h);
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
button,input,textarea{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;padding:0;}
::selection{background:var(--c-brand);color:var(--c-ink);}
:focus-visible{outline:2px solid var(--c-brand-deep);outline-offset:3px;border-radius:4px;}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px;}
.grid-12{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  height:var(--header-h);
  background:rgba(250,250,247,.86);
  backdrop-filter:saturate(160%) blur(10px);
  transition:height .28s var(--ease),background .28s var(--ease),border-color .28s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  height:62px;
  background:rgba(250,250,247,.94);
  border-bottom:1px solid var(--c-line);
}
.header-inner{display:flex;align-items:center;height:100%;gap:24px;}
.logo{display:flex;align-items:baseline;gap:2px;font-weight:800;letter-spacing:-.01em;line-height:1;white-space:nowrap;}
.logo-mark{font-size:20px;}
.logo-sub{font-size:20px;color:var(--c-ink);position:relative;}
.logo-sub::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:3px;background:var(--c-brand);border-radius:2px;}
.logo:hover .logo-sub::after{background:var(--c-accent);}
.nav-desktop{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;padding:10px 16px;font-size:15.5px;font-weight:600;color:var(--c-ink-2);
  border-radius:var(--r-xs);transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:16px;right:16px;bottom:2px;height:2px;background:var(--c-brand-deep);
  transform:scaleX(0);transform-origin:left;transition:transform .18s var(--ease);
}
.nav-link:hover{color:var(--c-ink);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-ink);}
.header-right{display:flex;align-items:center;gap:12px;}
.hamburger{display:none;width:44px;height:44px;border:1px solid var(--c-line);border-radius:var(--r-sm);align-items:center;justify-content:center;flex-direction:column;gap:5px;background:var(--c-surface);transition:border-color .2s var(--ease),background .2s var(--ease);}
.hamburger span{display:block;width:18px;height:1.8px;background:var(--c-ink);border-radius:2px;transition:transform .25s var(--ease),opacity .2s var(--ease);}
.hamburger:hover{border-color:var(--c-ink);}
.hamburger.is-open span:nth-child(1){transform:translateY(6.8px) rotate(45deg);}
.hamburger.is-open span:nth-child(2){opacity:0;}
.hamburger.is-open span:nth-child(3){transform:translateY(-6.8px) rotate(-45deg);}

/* 抽屉 */
.drawer{
  position:fixed;inset:0;z-index:115;background:var(--c-dark);color:var(--c-dark-text);
  padding:96px 24px 40px;
  transform:translateY(-12px);opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .26s var(--ease),transform .26s var(--ease),visibility .26s;
  overflow-y:auto;
}
.drawer.is-open{opacity:1;transform:translateY(0);visibility:visible;pointer-events:auto;}
.drawer-list{display:flex;flex-direction:column;gap:4px;max-width:520px;margin:0 auto;}
.drawer-link{
  display:flex;align-items:center;gap:18px;padding:20px 8px;font-size:20px;font-weight:700;
  border-bottom:1px solid rgba(244,245,240,.14);transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.drawer-link span.idx{font-size:13px;font-weight:600;color:var(--c-brand);letter-spacing:.08em;min-width:28px;}
.drawer-link:hover{color:var(--c-brand);padding-left:16px;}
.drawer-cta{margin:28px auto 0;max-width:520px;}
.drawer-note{margin:20px auto 0;max-width:520px;font-size:13px;color:var(--c-dark-muted);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15.5px;font-weight:700;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-sm{height:40px;padding:0 18px;font-size:14.5px;}
.btn-lg{height:52px;padding:0 30px;font-size:16.5px;}
.btn-primary{background:var(--c-ink);color:var(--c-dark-text);}
.btn-primary:hover{background:var(--c-brand);color:var(--c-ink);transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--c-ink);border-color:var(--c-ink);}
.btn-ghost:hover{background:var(--c-ink);color:var(--c-dark-text);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-brand{background:var(--c-brand);color:var(--c-ink);}
.btn-brand:hover{background:var(--c-brand-deep);transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-dark-ghost{background:transparent;color:var(--c-dark-text);border-color:rgba(244,245,240,.42);}
.btn-dark-ghost:hover{background:var(--c-dark-text);color:var(--c-ink);border-color:var(--c-dark-text);transform:translateY(-2px);}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:700;color:var(--c-ink);position:relative;padding-bottom:4px;}
.btn-text::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--c-brand-deep);transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease);}
.btn-text:hover::after{transform:scaleX(1);}
.btn-text:hover{color:var(--c-brand-deep);}

/* ============ 首屏 ============ */
.hero{
  position:relative;isolation:isolate;color:var(--c-dark-text);
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  padding:clamp(72px,11vw,132px) 0 clamp(40px,6vw,64px);
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(150deg,rgba(16,18,16,.72) 0%,rgba(16,18,16,.6) 58%,rgba(16,18,16,.68) 100%);
}
.hero-inner{max-width:860px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;
  color:var(--c-brand);margin-bottom:22px;
}
.eyebrow::before{content:"";width:28px;height:2px;background:var(--c-brand);display:block;}
.hero h1{
  font-size:clamp(2.5rem,6vw,5rem);
  line-height:1.05;
  font-weight:800;
  letter-spacing:-.02em;
  margin-bottom:22px;
}
.hero h1 em{font-style:normal;color:var(--c-brand);}
.hero-sub{font-size:clamp(16px,1.6vw,18.5px);line-height:1.75;color:rgba(244,245,240,.82);max-width:62ch;margin-bottom:34px;}
.hero-sub strong{color:var(--c-dark-text);font-weight:700;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:48px;}
.trust-bar{
  display:flex;flex-wrap:wrap;gap:10px 34px;padding-top:24px;
  border-top:1px solid rgba(244,245,240,.18);
}
.trust-item{display:flex;align-items:baseline;gap:8px;font-size:13.5px;color:rgba(244,245,240,.72);}
.trust-item b{font-size:19px;font-weight:800;color:var(--c-brand);letter-spacing:-.01em;}
.scroll-hint{
  position:absolute;right:40px;bottom:26px;display:flex;flex-direction:column;align-items:center;gap:8px;
  font-size:10.5px;letter-spacing:.2em;color:rgba(244,245,240,.55);writing-mode:vertical-rl;
}
.scroll-hint i{display:block;width:1px;height:36px;background:linear-gradient(rgba(244,245,240,.6),transparent);animation:bob 2.2s var(--ease) infinite;}
@keyframes bob{0%,100%{transform:translateY(-8px);}50%{transform:translateY(8px);}}

/* ============ 通用板块 ============ */
.section{padding:clamp(56px,7vw,104px) 0;}
.section-tight{padding:clamp(40px,5vw,72px) 0;}
.section-head{max-width:720px;margin-bottom:clamp(32px,4vw,56px);}
.section-head h2{font-size:clamp(1.75rem,3.2vw,2.75rem);line-height:1.15;font-weight:700;letter-spacing:-.015em;}
.section-head p{margin-top:16px;color:var(--c-muted);font-size:16.5px;max-width:64ch;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.kicker{display:block;font-size:12px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--c-brand-deep);margin-bottom:14px;}
.section-dark{background:var(--c-dark);color:var(--c-dark-text);}
.section-dark .section-head p{color:var(--c-dark-muted);}
.section-dark .kicker{color:var(--c-brand);}
.section-alt{background:var(--c-surface-2);}

/* ============ 三步上手 ============ */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:0;}
.step{
  position:relative;padding:0 32px 0 0;
}
.step + .step{padding-left:32px;}
.step + .step::before{
  content:"";position:absolute;left:0;top:34px;width:24px;border-top:2px dashed var(--c-line);
}
.step-num{
  font-size:clamp(2.75rem,5vw,4rem);font-weight:800;line-height:1;letter-spacing:-.03em;color:var(--c-accent);
  margin-bottom:18px;
}
.step h3{font-size:1.35rem;font-weight:700;margin-bottom:12px;}
.step p{color:var(--c-muted);font-size:15.5px;line-height:1.8;}
.step-tag{display:inline-flex;margin-top:16px;font-size:12.5px;font-weight:700;color:var(--c-ink);background:var(--c-brand);border-radius:var(--r-full);padding:4px 12px;}

/* ============ 适配速览 ============ */
.spec-list{border-top:1px solid var(--c-line);}
.spec-row{
  display:grid;grid-template-columns:200px 1fr 200px;gap:24px;align-items:center;
  padding:22px 8px;border-bottom:1px solid var(--c-line);
  transition:background .22s var(--ease),padding-left .22s var(--ease);
}
.spec-row:hover{background:var(--c-surface);padding-left:18px;}
.spec-key{font-size:13px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--c-muted);}
.spec-val{font-size:17px;font-weight:700;}
.spec-val small{display:block;font-size:14px;font-weight:400;color:var(--c-muted);margin-top:2px;}
.spec-num{font-size:19px;font-weight:800;font-variant-numeric:tabular-nums;text-align:right;color:var(--c-brand-deep);}

/* ============ 案例证明 ============ */
.proof-grid{display:grid;grid-template-columns:1.35fr 1fr;grid-template-rows:auto auto;gap:24px;}
.proof-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
  display:flex;flex-direction:column;
}
.proof-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--c-brand-deep);}
.proof-card.wide{grid-row:span 2;}
.proof-media{aspect-ratio:16/9;overflow:hidden;background:var(--c-surface-2);}
.proof-card.wide .proof-media{aspect-ratio:16/10;}
.proof-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.proof-card:hover .proof-media img{transform:scale(1.035);}
.proof-body{padding:24px 26px 26px;display:flex;flex-direction:column;gap:14px;flex:1;}
.proof-body h3{font-size:1.2rem;font-weight:700;line-height:1.45;}
.proof-card.wide .proof-body h3{font-size:1.5rem;}
.proof-body p{font-size:15px;color:var(--c-muted);line-height:1.75;}
.proof-stats{display:flex;flex-wrap:wrap;gap:26px;margin-top:auto;padding-top:16px;border-top:1px solid var(--c-line);}
.stat b{display:block;font-size:26px;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums;color:var(--c-ink);}
.stat span{font-size:12.5px;color:var(--c-muted);}
.proof-grid-side{display:grid;grid-template-rows:1fr 1fr;gap:24px;}

/* ============ 内容卡片 ============ */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  box-shadow:var(--sh-1);overflow:hidden;position:relative;
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
  display:flex;
}
.post-card::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:4px;background:var(--c-brand);
  border-radius:0 4px 4px 0;opacity:0;transition:opacity .25s var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--c-brand-deep);}
.post-card:hover::before{opacity:1;}
.post-card__link{display:flex;flex-direction:column;gap:12px;padding:24px 26px 22px;width:100%;}
.post-card__badge{align-self:flex-start;font-size:12px;font-weight:700;letter-spacing:.02em;background:var(--c-surface-2);color:var(--c-ink);border-radius:var(--r-full);padding:4px 12px;}
.post-card__title{font-size:17.5px;font-weight:700;line-height:1.5;transition:color .22s var(--ease);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card__link:hover .post-card__title{color:var(--c-brand-deep);}
.post-card__desc{font-size:14px;color:var(--c-muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card__meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-muted);}
.post-card__more{font-weight:700;color:var(--c-ink);}

.empty-state{
  min-height:220px;border:1px dashed var(--c-line);border-radius:var(--r-md);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  text-align:center;padding:40px 24px;background:var(--c-surface);
}
.empty-state svg{width:38px;height:38px;stroke:var(--c-muted);}
.empty-state p{color:var(--c-muted);font-size:15px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:56px;padding:16px 4px;text-align:left;font-size:17px;font-weight:700;line-height:1.5;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--c-brand-deep);}
.faq-icon{position:relative;flex:0 0 22px;width:22px;height:22px;transition:transform .26s var(--ease);}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--c-ink);border-radius:2px;transition:background .2s var(--ease);}
.faq-icon::before{left:0;top:10px;width:22px;height:2px;}
.faq-icon::after{left:10px;top:0;width:2px;height:22px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:var(--c-brand-deep);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease);}
.faq-a-inner{padding:2px 4px 24px;font-size:15.5px;line-height:1.85;color:var(--c-muted);max-width:72ch;}
.faq-a-inner strong{color:var(--c-ink);font-weight:700;}

/* ============ CTA ============ */
.cta-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(32px,5vw,72px);align-items:start;}
.cta-grid h2{font-size:clamp(1.8rem,3.2vw,2.6rem);line-height:1.15;font-weight:700;letter-spacing:-.015em;margin-bottom:20px;}
.cta-grid h2 em{font-style:normal;color:var(--c-brand);}
.cta-copy p{color:var(--c-dark-muted);font-size:16.5px;max-width:56ch;margin-bottom:26px;}
.cta-points{display:flex;flex-direction:column;gap:12px;}
.cta-points li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:rgba(244,245,240,.86);}
.cta-points li::before{content:"";flex:0 0 8px;width:8px;height:8px;margin-top:10px;background:var(--c-brand);border-radius:2px;}
.form-card{
  background:rgba(244,245,240,.05);border:1px solid rgba(244,245,240,.16);border-radius:var(--r-lg);
  padding:clamp(24px,3vw,36px);
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;font-weight:700;letter-spacing:.04em;color:var(--c-dark-muted);margin-bottom:8px;}
.field input,.field textarea{
  width:100%;height:48px;padding:0 16px;border-radius:var(--r-sm);
  background:rgba(16,18,16,.4);border:1px solid rgba(244,245,240,.22);color:var(--c-dark-text);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.field textarea{height:auto;min-height:96px;padding:12px 16px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:rgba(244,245,240,.4);}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--c-brand);box-shadow:0 0 0 2px rgba(198,242,78,.35);background:rgba(16,18,16,.6);}
.field.has-error input,.field.has-error textarea{border-color:var(--c-accent);}
.field-error{display:none;margin-top:6px;font-size:13px;color:var(--c-accent);}
.field.has-error .field-error{display:block;}
.form-card .btn{width:100%;}
.form-note{margin-top:14px;font-size:12px;line-height:1.6;color:var(--c-dark-muted);}
.form-ok{
  display:none;margin-top:16px;padding:12px 16px;border-radius:var(--r-sm);
  background:rgba(198,242,78,.14);border:1px solid rgba(198,242,78,.4);color:var(--c-brand);font-size:14px;
}
.form-ok.is-visible{display:block;}
.spinner{width:16px;height:16px;border:2px solid rgba(16,18,16,.25);border-top-color:var(--c-ink);border-radius:50%;animation:spin .7s linear infinite;}
@keyframes spin{to{transform:rotate(360deg);}}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-dark);color:var(--c-dark-text);padding:clamp(56px,6vw,88px) 0 32px;border-top:1px solid rgba(244,245,240,.12);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px 32px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand .logo-sub{color:var(--c-dark-text);}
.footer-brand p{font-size:14.5px;color:var(--c-dark-muted);max-width:34ch;line-height:1.8;}
.footer-col h4{font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--c-brand);margin-bottom:18px;}
.footer-col li{margin-bottom:11px;}
.footer-col a{font-size:14.5px;color:rgba(244,245,240,.78);transition:color .2s var(--ease),transform .2s var(--ease);display:inline-block;}
.footer-col a:hover{color:var(--c-brand);transform:translateY(1px);}
.footer-contact li{font-size:14px;color:var(--c-dark-muted);margin-bottom:10px;line-height:1.7;}
.footer-contact b{color:var(--c-dark-text);font-weight:600;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(244,245,240,.12);
  display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between;font-size:13px;color:var(--c-dark-muted);
}

/* ============ 移动底部 Tab ============ */
.mobile-tab{display:none;}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .container{padding:0 32px;}
}
@media (max-width:1024px){
  .container{padding:0 24px;}
  .nav-link{padding:10px 12px;font-size:15px;}
  .proof-grid{grid-template-columns:1fr 1fr;}
  .proof-card.wide{grid-row:auto;grid-column:span 2;}
  .post-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px 28px;}
  .cta-grid{grid-template-columns:1fr;}
}
@media (max-width:868px){
  .nav-desktop{display:none;}
  .hamburger{display:flex;}
  .steps{grid-template-columns:1fr;gap:0;}
  .step{padding:0 0 32px 28px;border-left:2px solid var(--c-line);}
  .step + .step{padding-left:28px;}
  .step + .step::before{display:none;}
  .step::after{
    content:"";position:absolute;left:-8px;top:12px;width:12px;height:12px;border-radius:50%;
    background:var(--c-bg);border:3px solid var(--c-brand-deep);
  }
  .steps .step:last-child{border-left-color:transparent;padding-bottom:0;}
  .spec-row{grid-template-columns:1fr;gap:6px;padding:18px 8px;}
  .spec-num{text-align:left;}
}
@media (max-width:768px){
  body{padding-bottom:calc(var(--tab-h) + env(safe-area-inset-bottom) + 8px);}
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .proof-grid{grid-template-columns:1fr;gap:20px;}
  .proof-card.wide{grid-column:auto;}
  .proof-grid-side{grid-template-rows:auto;gap:20px;}
  .post-grid{grid-template-columns:1fr;gap:18px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .scroll-hint{display:none;}
  .hero{padding-top:64px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{width:100%;}
  .mobile-tab{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:130;
    height:var(--tab-h);padding-bottom:env(safe-area-inset-bottom);
    background:rgba(250,250,247,.97);backdrop-filter:blur(10px);
    border-top:1px solid var(--c-line);
  }
  .tab-item{
    flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
    font-size:10px;font-weight:600;color:var(--c-muted);position:relative;padding-top:4px;
    transition:color .2s var(--ease);
  }
  .tab-item svg{width:21px;height:21px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
  .tab-item::before{
    content:"";position:absolute;top:0;left:50%;transform:translateX(-50%) scaleX(0);
    width:26px;height:3px;background:var(--c-brand-deep);border-radius:0 0 3px 3px;
    transition:transform .22s var(--ease);
  }
  .tab-item.is-active{color:var(--c-ink);}
  .tab-item.is-active::before{transform:translateX(-50%) scaleX(1);}
  .tab-item:active{color:var(--c-brand-deep);}
}
@media (max-width:480px){
  .logo-mark,.logo-sub{font-size:17.5px;}
  .hero h1{font-size:clamp(2rem,8.5vw,2.6rem);}
  .trust-bar{gap:8px 20px;}
  .trust-item b{font-size:16px;}
  .btn{height:46px;padding:0 20px;}
  .spec-val{font-size:15.5px;}
  .footer-grid{gap:28px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{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{
  --c-bg:#FAFAF7;
  --c-surface:#FFFFFF;
  --c-line:#E4E6DE;
  --c-ink:#101210;
  --c-ink-2:#1B1F1B;
  --c-muted:#6B736A;
  --c-brand:#C6F24E;
  --c-brand-deep:#A8D62F;
  --c-accent:#FF5A2B;
  --c-dark:#101210;
  --c-dark-text:#F4F5F0;
  --c-tint:#F1F4EA;
  --r-xs:8px;
  --r-sm:12px;
  --r-md:18px;
  --r-lg:24px;
  --r-full:999px;
  --sh-1:0 1px 2px rgba(16,18,16,.05),0 8px 24px -16px rgba(16,18,16,.18);
  --sh-2:0 18px 40px -20px rgba(16,18,16,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-num:"Inter","SF Pro Display",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink-2);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font-family:inherit;font-size:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}
.container{max-width:1240px;margin:0 auto;padding:0 40px;width:100%;}
.section{padding:88px 0;}
.section--surface{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:72px;
  background:rgba(250,250,247,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:height .25s var(--ease),background .25s var(--ease),border-color .25s var(--ease);
}
.site-header.is-scrolled{height:62px;border-bottom-color:var(--c-line);background:rgba(250,250,247,.86);}
.header-inner{height:100%;display:flex;align-items:center;gap:28px;justify-content:space-between;}
.logo{display:inline-flex;align-items:baseline;gap:7px;font-weight:800;letter-spacing:-.02em;color:var(--c-ink);}
.logo-mark{font-size:20px;line-height:1;}
.logo-sub{font-size:13px;font-weight:600;color:var(--c-muted);letter-spacing:.02em;}
.logo:hover .logo-sub{color:var(--c-ink);}
.nav-desktop{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{position:relative;padding:10px 14px;font-size:15px;font-weight:600;color:var(--c-ink-2);transition:color .2s var(--ease);}
.nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;background:var(--c-brand-deep);transform:scaleX(0);transform-origin:left;transition:transform .18s var(--ease);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link:hover,.nav-link.is-active{color:var(--c-ink);}
.header-right{display:flex;align-items:center;gap:12px;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  border:1px solid transparent;white-space:nowrap;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.btn-sm{height:42px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--c-ink);color:var(--c-dark-text);}
.btn-primary:hover{background:var(--c-brand);color:var(--c-ink);transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--c-ink);color:var(--c-ink);}
.btn-ghost:hover{background:var(--c-ink);color:var(--c-dark-text);}
.btn-brand{background:var(--c-brand);color:var(--c-ink);}
.btn-brand:hover{background:var(--c-brand-deep);transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn:disabled,.btn.is-disabled{opacity:.45;pointer-events:none;}
.link-underline{position:relative;display:inline-block;font-weight:600;color:var(--c-ink);}
.link-underline::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;background:var(--c-brand-deep);transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease);}
.link-underline:hover::after{transform:scaleX(1);}

.hamburger{display:none;width:42px;height:42px;flex-direction:column;justify-content:center;align-items:center;gap:5px;border-radius:var(--r-xs);}
.hamburger span{display:block;width:20px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform .25s var(--ease),opacity .25s var(--ease);}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.hamburger:hover{background:var(--c-tint);}

.drawer{
  position:fixed;inset:0;z-index:200;background:var(--c-dark);color:var(--c-dark-text);
  transform:translateY(-100%);transition:transform .35s var(--ease);
  padding:22px 20px 40px;overflow-y:auto;
}
.drawer.is-open{transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px;}
.drawer .logo-mark{color:#fff;}
.drawer .logo-sub{color:#A9B0A7;}
.drawer-close{width:42px;height:42px;border-radius:var(--r-xs);border:1px solid rgba(244,245,240,.24);color:#F4F5F0;font-size:20px;line-height:1;display:grid;place-items:center;}
.drawer-close:hover{background:var(--c-brand);color:var(--c-ink);border-color:var(--c-brand);}
.drawer-nav a{display:flex;align-items:baseline;gap:14px;font-size:20px;font-weight:700;padding:18px 0;border-bottom:1px solid rgba(244,245,240,.12);}
.drawer-nav a:hover{color:var(--c-brand);}
.drawer-nav .idx{font-family:var(--font-num);font-size:12px;color:var(--c-brand-deep);letter-spacing:.08em;}

.tabbar{display:none;}

/* ---------- article hero ---------- */
main{padding-top:72px;}
.article-hero{padding:56px 0 48px;background:linear-gradient(180deg,#FFFFFF 0%,var(--c-bg) 100%);border-bottom:1px solid var(--c-line);}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);margin-bottom:26px;}
.breadcrumb a:hover{color:var(--c-ink);}
.breadcrumb .sep{opacity:.55;}
.breadcrumb .crumb-cat{color:var(--c-ink-2);font-weight:600;}
.breadcrumb .current{color:var(--c-ink);}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--c-ink);}
.eyebrow::before{content:"";display:block;width:3px;height:14px;background:var(--c-brand);border-radius:2px;}
.article-hero h1{
  margin:16px 0 18px;max-width:930px;
  font-size:clamp(2rem,4.4vw,3.4rem);line-height:1.12;font-weight:800;letter-spacing:-.02em;color:var(--c-ink);
}
.hero-lead{max-width:720px;font-size:16.5px;line-height:1.85;color:var(--c-muted);margin-bottom:24px;}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;font-size:13px;color:var(--c-muted);}
.meta-chip{padding:5px 14px;border-radius:var(--r-full);background:var(--c-tint);color:var(--c-ink-2);font-weight:600;}
.meta-item{font-variant-numeric:tabular-nums;}

/* ---------- layout ---------- */
.article-main{padding:56px 0 88px;}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 286px;gap:56px;align-items:start;}
.article-col{min-width:0;}
.article-cover{border-radius:var(--r-md);overflow:hidden;border:1px solid var(--c-line);margin-bottom:36px;background:var(--c-tint);}
.article-cover img{width:100%;aspect-ratio:21/9;object-fit:cover;}

/* ---------- article body ---------- */
.article-body{max-width:760px;font-size:17px;line-height:1.9;color:var(--c-ink-2);}
.article-body>*+*{margin-top:1.2em;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  position:relative;margin:48px 0 16px;padding-left:18px;
  font-size:clamp(1.4rem,2.4vw,1.85rem);line-height:1.3;font-weight:700;letter-spacing:-.01em;color:var(--c-ink);
}
.article-body h2::before{content:"";position:absolute;left:0;top:.32em;width:4px;height:1.05em;background:var(--c-brand);border-radius:2px;}
.article-body h3{margin:32px 0 12px;font-size:1.2rem;font-weight:600;color:var(--c-ink);}
.article-body h4{margin:24px 0 10px;font-size:1.05rem;font-weight:600;}
.article-body a{color:var(--c-ink);border-bottom:1px solid var(--c-brand-deep);}
.article-body a:hover{background:var(--c-brand);}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:1.4em;list-style:revert;}
.article-body li{margin-bottom:.5em;}
.article-body ul li::marker{color:var(--c-brand-deep);}
.article-body ol li::marker{color:var(--c-accent);font-weight:700;font-family:var(--font-num);}
.article-body img{border-radius:14px;margin:26px auto;box-shadow:var(--sh-1);}
.article-body figure{margin:26px 0;}
.article-body figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:10px;line-height:1.6;}
.article-body blockquote{
  border-left:3px solid var(--c-brand);background:var(--c-tint);
  padding:18px 22px;border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--c-ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;border:1px solid var(--c-line);border-radius:var(--r-sm);overflow:hidden;}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:12px 14px;text-align:left;}
.article-body thead th{background:var(--c-tint);font-weight:700;color:var(--c-ink);}
.article-body tbody tr:nth-child(even){background:#F7F8F3;}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:36px 0;}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.92em;background:var(--c-tint);padding:2px 6px;border-radius:6px;}

.empty-state{
  border:1px dashed var(--c-line);border-radius:var(--r-md);background:var(--c-surface);
  min-height:220px;padding:44px 24px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;text-align:center;
}
.empty-state .empty-icon{width:46px;height:46px;border-radius:50%;background:var(--c-tint);display:grid;place-items:center;color:var(--c-ink);}
.empty-state h2{font-size:1.3rem;font-weight:700;color:var(--c-ink);}
.empty-state p{max-width:44ch;font-size:15px;color:var(--c-muted);}

.tags-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:44px;padding-top:26px;border-top:1px solid var(--c-line);}
.tag{padding:6px 14px;border-radius:var(--r-full);background:var(--c-tint);border:1px solid transparent;font-size:12.5px;font-weight:600;color:var(--c-ink-2);transition:.2s var(--ease);}
.tag:hover{background:var(--c-brand);border-color:var(--c-brand-deep);}
.back-links{display:flex;flex-wrap:wrap;gap:22px;margin-top:26px;font-size:14.5px;}

/* ---------- sidebar ---------- */
.sidebar{display:flex;flex-direction:column;gap:20px;position:sticky;top:92px;}
.side-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);padding:20px;box-shadow:var(--sh-1);}
.side-title{font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--c-muted);margin-bottom:12px;text-transform:uppercase;}
.side-list li+li{border-top:1px dashed var(--c-line);}
.side-list a{display:block;padding:12px 0;}
.side-list-title{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:14.5px;font-weight:600;line-height:1.55;color:var(--c-ink-2);}
.side-list a:hover .side-list-title{color:var(--c-accent);}
.side-list-date{display:block;margin-top:4px;font-size:12px;color:var(--c-muted);font-variant-numeric:tabular-nums;}
.side-cta{background:var(--c-tint);border:1px solid var(--c-brand-deep);border-radius:var(--r-md);padding:20px;}
.side-cta img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-sm);margin-bottom:14px;}
.side-cta h3{font-size:16px;font-weight:700;color:var(--c-ink);margin-bottom:8px;}
.side-cta p{font-size:13.5px;line-height:1.75;color:var(--c-muted);margin-bottom:14px;}
.side-cta .btn{width:100%;height:44px;font-size:14px;}

/* ---------- cards ---------- */
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:36px;}
.sec-head h2{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:700;letter-spacing:-.01em;color:var(--c-ink);}
.sec-head p{font-size:14px;color:var(--c-muted);max-width:56ch;}
.cards-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--c-brand-deep);}
.card-thumb{background:var(--c-tint);overflow:hidden;}
.card-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .5s var(--ease);}
.card:hover .card-thumb img{transform:scale(1.04);}
.card-body{padding:18px;display:flex;flex-direction:column;gap:10px;}
.card h3{font-size:17px;font-weight:700;line-height:1.45;color:var(--c-ink);}
.card:hover h3{color:var(--c-accent);}
.card-meta{display:flex;justify-content:space-between;gap:12px;font-size:13px;color:var(--c-muted);font-variant-numeric:tabular-nums;}

/* ---------- faq ---------- */
.faq{max-width:920px;margin:0 auto;border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{width:100%;min-height:56px;padding:18px 0;display:flex;align-items:center;justify-content:space-between;gap:18px;text-align:left;font-size:17px;font-weight:700;color:var(--c-ink);transition:color .2s var(--ease);}
.faq-q:hover{color:var(--c-accent);}
.plus{position:relative;flex:0 0 18px;width:18px;height:18px;transition:transform .26s var(--ease);}
.plus::before,.plus::after{content:"";position:absolute;background:var(--c-ink);border-radius:2px;}
.plus::before{left:0;right:0;top:8px;height:2px;}
.plus::after{top:0;bottom:0;left:8px;width:2px;}
.faq-item.is-open .plus{transform:rotate(45deg);}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .26s var(--ease);}
.faq-item.is-open .faq-a{grid-template-rows:1fr;}
.faq-a-inner{overflow:hidden;}
.faq-a p{padding:0 40px 22px 0;font-size:15.5px;line-height:1.85;color:var(--c-muted);}

/* ---------- cta ---------- */
.cta-section{position:relative;background:var(--c-dark);color:var(--c-dark-text);padding:96px 0;overflow:hidden;scroll-margin-top:90px;}
.cta-section::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;opacity:.24;}
.cta-inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.cta-section h2{font-size:clamp(1.7rem,3.2vw,2.6rem);line-height:1.18;font-weight:800;color:#FFFFFF;letter-spacing:-.015em;margin-bottom:16px;}
.cta-section h2 em{font-style:normal;color:var(--c-brand);}
.cta-section .cta-desc{font-size:16px;line-height:1.85;color:#C3C9C0;max-width:56ch;margin-bottom:24px;}
.cta-points{display:flex;flex-wrap:wrap;gap:12px;}
.cta-points span{padding:7px 14px;border-radius:var(--r-full);border:1px solid rgba(244,245,240,.24);font-size:13px;color:#E4E8E0;}
.form-card{background:#181B18;border:1px solid rgba(244,245,240,.14);border-radius:var(--r-lg);padding:28px;}
.form-card h3{font-size:18px;font-weight:700;color:#FFFFFF;margin-bottom:6px;}
.form-card .form-sub{font-size:13.5px;color:#9AA197;margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;font-weight:600;color:#B9BFB6;margin-bottom:8px;}
.field input{width:100%;height:48px;padding:0 14px;border-radius:var(--r-sm);border:1px solid rgba(244,245,240,.22);background:rgba(244,245,240,.05);color:#FFFFFF;font-size:15px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);}
.field input::placeholder{color:#7E857C;}
.field input:focus{outline:none;border-color:var(--c-brand);box-shadow:0 0 0 2px rgba(198,242,78,.32);}
.field-error input{border-color:var(--c-accent);}
.field .hint{display:none;margin-top:6px;font-size:13px;color:var(--c-accent);}
.form-card .btn{width:100%;}
.form-note{margin-top:12px;font-size:12px;line-height:1.65;color:#8B9289;}
.form-ok{display:none;margin-top:12px;padding:10px 14px;border-radius:var(--r-sm);background:rgba(198,242,78,.14);color:var(--c-brand);font-size:13.5px;}

/* ---------- footer ---------- */
.site-footer{background:var(--c-dark);color:var(--c-dark-text);padding:72px 0 40px;border-top:1px solid rgba(244,245,240,.12);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(244,245,240,.12);}
.footer-brand .logo-mark{color:#FFFFFF;}
.footer-brand .logo-sub{color:#A9B0A7;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:#A9B0A7;max-width:38ch;}
.footer-col h4{font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--c-brand);margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{display:inline-block;font-size:14px;color:#C9CFC6;transition:color .2s var(--ease),transform .2s var(--ease);}
.footer-col a:hover{color:var(--c-brand);transform:translateY(-1px);}
.footer-contact li{font-size:13.5px;color:#A9B0A7;}
.footer-contact b{color:#E6E9E2;font-weight:600;}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;padding-top:24px;font-size:13px;color:#8B9289;}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1280px){
  .layout{gap:44px;}
}
@media (max-width:1024px){
  .container{padding:0 28px;}
  .nav-desktop{display:none;}
  .hamburger{display:flex;}
  .header-right .btn-primary{display:none;}
  .layout{grid-template-columns:minmax(0,1fr);gap:40px;}
  .sidebar{position:static;}
  .cards-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-inner{grid-template-columns:minmax(0,1fr);gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .article-body{max-width:none;}
  body{padding-bottom:calc(58px + env(safe-area-inset-bottom));}
  .site-footer{padding-bottom:calc(40px + 58px + env(safe-area-inset-bottom));}
  .tabbar{
    display:grid;grid-template-columns:repeat(5,1fr);
    position:fixed;left:0;right:0;bottom:0;z-index:120;
    height:calc(58px + env(safe-area-inset-bottom));
    padding-bottom:env(safe-area-inset-bottom);
    background:rgba(255,255,255,.97);backdrop-filter:blur(10px);
    border-top:1px solid var(--c-line);
  }
  .tab{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;color:var(--c-muted);}
  .tab svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
  .tab span{font-size:10px;line-height:1.2;font-weight:600;}
  .tab.is-active{color:var(--c-ink);}
  .tab.is-active svg{color:var(--c-brand-deep);}
  .tab.is-active::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:28px;height:3px;border-radius:0 0 3px 3px;background:var(--c-brand);}
  .tab:hover{color:var(--c-ink);}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .article-main{padding:40px 0 64px;}
  .article-hero{padding:40px 0 36px;}
  .hero-lead{font-size:15.5px;}
  .cards-3{grid-template-columns:minmax(0,1fr);gap:18px;}
  .article-body{font-size:16.5px;}
  .article-body h2{margin-top:38px;}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap;}
  .cta-section{padding:64px 0;}
  .form-card{padding:22px;}
  .faq-a p{padding-right:0;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:480px){
  .site-header{height:62px;}
  .header-inner{gap:12px;}
  .logo-mark{font-size:18px;}
  .logo-sub{font-size:12px;}
  main{padding-top:62px;}
  .meta-row{font-size:12.5px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px;}
  .back-links{gap:16px;}
  .cta-points span{font-size:12.5px;}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *,*::before,*::after{animation:none !important;transition-duration:.01ms !important;}
}

/* roulang page: category1 */
:root{
  --c-bg:#FAFAF7;
  --c-surface:#FFFFFF;
  --c-line:#E4E6DE;
  --c-ink:#101210;
  --c-ink-2:#1B1F1B;
  --c-muted:#6B736A;
  --c-brand:#C6F24E;
  --c-brand-deep:#A8D62F;
  --c-accent:#FF5A2B;
  --c-dark:#101210;
  --c-dark-text:#F4F5F0;
  --c-mist:#EFF1EA;
  --r-xs:8px;
  --r-sm:12px;
  --r-md:18px;
  --r-lg:24px;
  --r-full:999px;
  --sh-1:0 1px 2px rgba(16,18,16,.05), 0 8px 24px -16px rgba(16,18,16,.18);
  --sh-2:0 18px 40px -20px rgba(16,18,16,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-num:"Inter","SF Pro Display","PingFang SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button,input,textarea{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-brand-deep);outline-offset:3px;border-radius:4px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px;}
.tnum{font-family:var(--font-num);font-variant-numeric:tabular-nums;}
.eyebrow{
  display:inline-block;
  font-family:var(--font-num);
  font-size:12px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--c-muted);
  font-weight:600;
}
.section{padding:112px 0;}
.section-tight{padding:72px 0;}
.section-head{max-width:720px;margin-bottom:48px;}
.section-head h2{font-size:clamp(1.75rem,3.2vw,2.75rem);line-height:1.15;margin:14px 0 16px;}
.section-head p{color:var(--c-muted);font-size:16px;}
.divider{height:1px;background:var(--c-line);border:0;margin:0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background-color .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.btn-primary{background:var(--c-ink);color:var(--c-dark-text);}
.btn-primary:hover{background:var(--c-brand);color:var(--c-ink);transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);background:var(--c-brand-deep);}
.btn-outline{background:transparent;border-color:var(--c-ink);color:var(--c-ink);}
.btn-outline:hover{background:var(--c-ink);color:var(--c-dark-text);transform:translateY(-2px);}
.btn-outline:active{transform:translateY(0);}
.btn-brand{background:var(--c-brand);color:var(--c-ink);}
.btn-brand:hover{background:var(--c-brand-deep);transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-brand:active{transform:translateY(0);}
.btn-light-outline{background:transparent;border-color:rgba(244,245,240,.45);color:var(--c-dark-text);}
.btn-light-outline:hover{background:var(--c-dark-text);color:var(--c-ink);border-color:var(--c-dark-text);}
.btn-sm{height:42px;padding:0 20px;font-size:14px;}
.btn:disabled,.btn.is-disabled{opacity:.45;pointer-events:none;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;
  position:relative;padding-bottom:2px;
}
.text-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;
  background:var(--c-brand);transform:scaleX(0);transform-origin:left;
  transition:transform .18s var(--ease);
}
.text-link:hover::after{transform:scaleX(1);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(250,250,247,.92);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid transparent;
  transition:height .28s var(--ease),border-color .28s var(--ease),background-color .28s var(--ease);
}
.header-inner{
  height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;
  transition:height .28s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);background:rgba(250,250,247,.82);box-shadow:0 6px 24px -20px rgba(16,18,16,.4);}
.site-header.is-scrolled .header-inner{height:62px;}
.logo{display:inline-flex;align-items:baseline;gap:2px;font-weight:800;letter-spacing:-.02em;}
.logo-mark{font-size:20px;color:var(--c-ink);}
.logo-sub{font-size:20px;color:var(--c-ink);}
.logo-sub::before{content:"";display:inline-block;width:5px;height:5px;border-radius:50%;background:var(--c-brand);margin:0 7px 3px 2px;}
.nav-desktop{display:flex;align-items:center;gap:34px;}
.nav-link{
  position:relative;font-size:15px;font-weight:600;color:var(--c-ink-2);
  padding:6px 0;transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--c-brand);
  transform:scaleX(0);transform-origin:left;transition:transform .18s var(--ease);
}
.nav-link:hover{color:var(--c-ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-ink);}
.nav-link.is-active::after{transform:scaleX(1);}
.header-right{display:flex;align-items:center;gap:14px;}
.hamburger{display:none;width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--c-line);align-items:center;justify-content:center;flex-direction:column;gap:5px;}
.hamburger span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform .24s var(--ease),opacity .24s var(--ease);}
.hamburger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger.is-open span:nth-child(2){opacity:0;}
.hamburger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- 抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:200;background:var(--c-dark);color:var(--c-dark-text);
  display:flex;flex-direction:column;justify-content:center;padding:0 32px;
  transform:translateY(-100%);opacity:0;visibility:hidden;
  transition:transform .38s var(--ease),opacity .3s var(--ease),visibility .38s;
}
.drawer.is-open{transform:translateY(0);opacity:1;visibility:visible;}
.drawer-close{
  position:absolute;top:22px;right:22px;width:44px;height:44px;border-radius:var(--r-full);
  border:1px solid rgba(244,245,240,.24);color:var(--c-dark-text);font-size:20px;line-height:1;
  display:flex;align-items:center;justify-content:center;
}
.drawer-close:hover{background:var(--c-brand);color:var(--c-ink);border-color:var(--c-brand);}
.drawer nav{display:flex;flex-direction:column;gap:6px;}
.drawer-link{
  display:flex;align-items:baseline;gap:18px;padding:16px 0;
  font-size:20px;font-weight:700;letter-spacing:-.01em;
  border-bottom:1px solid rgba(244,245,240,.12);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.drawer-link:hover{color:var(--c-brand);transform:translateX(4px);}
.drawer-link.is-active{color:var(--c-brand);}
.drawer-link .idx{font-family:var(--font-num);font-size:12px;color:var(--c-brand);letter-spacing:.14em;}
.drawer-foot{margin-top:36px;font-size:13px;color:rgba(244,245,240,.55);}

/* ---------- 内页 Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  min-height:44vh;
  display:flex;align-items:flex-end;
  padding:96px 0 72px;
  background-color:var(--c-dark);
  background-image:linear-gradient(180deg,rgba(16,18,16,.62),rgba(16,18,16,.72)),url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  color:var(--c-dark-text);
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:rgba(244,245,240,.62);margin-bottom:26px;}
.breadcrumb a{color:rgba(244,245,240,.62);transition:color .2s var(--ease);}
.breadcrumb a:hover{color:var(--c-brand);}
.breadcrumb em{font-style:normal;color:var(--c-dark-text);}
.page-hero .eyebrow{color:var(--c-brand);}
.page-hero h1{
  font-size:clamp(2rem,4.4vw,3.4rem);
  line-height:1.08;letter-spacing:-.02em;font-weight:800;
  margin:16px 0 20px;max-width:16em;
}
.hero-lead{max-width:640px;color:rgba(244,245,240,.8);font-size:17px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:12px 40px;margin-top:40px;
  padding-top:24px;border-top:1px solid rgba(244,245,240,.16);
  font-size:14px;color:rgba(244,245,240,.72);
}
.hero-facts b{font-family:var(--font-num);font-size:18px;color:var(--c-brand);font-weight:700;margin-right:6px;font-variant-numeric:tabular-nums;}

/* ---------- 导语条 ---------- */
.lead-strip{background:var(--c-surface);border-bottom:1px solid var(--c-line);}
.lead-strip .inner{
  display:grid;grid-template-columns:1.6fr 1fr;gap:48px;align-items:center;
  padding:56px 0;
}
.lead-strip p{font-size:17px;color:var(--c-ink-2);max-width:62ch;}
.lead-meta{display:flex;gap:36px;justify-content:flex-end;}
.lead-meta div{border-left:2px solid var(--c-brand);padding-left:14px;}
.lead-meta b{display:block;font-family:var(--font-num);font-size:24px;font-variant-numeric:tabular-nums;line-height:1.3;}
.lead-meta span{font-size:13px;color:var(--c-muted);}

/* ---------- 交错长文区 ---------- */
.zigzag{display:flex;flex-direction:column;gap:96px;}
.zz-row{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;}
.zz-row.reverse .zz-media{order:2;}
.zz-media{border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);}
.zz-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.zz-media.ratio-wide img{aspect-ratio:16/10;}
.zz-body{max-width:56ch;}
.step-num{
  display:block;font-family:var(--font-num);font-size:44px;font-weight:800;line-height:1;
  color:var(--c-line);letter-spacing:-.04em;margin-bottom:14px;
}
.zz-body h2{font-size:clamp(1.4rem,2.3vw,1.9rem);line-height:1.2;margin-bottom:18px;}
.zz-body h2::before{
  content:"";display:block;width:32px;height:4px;background:var(--c-brand);border-radius:2px;margin-bottom:16px;
}
.zz-body p{color:var(--c-muted);font-size:16px;margin-bottom:14px;}
.zz-body p strong{color:var(--c-ink);font-weight:600;}
.step-chip{
  display:inline-flex;align-items:center;gap:8px;margin-top:12px;
  background:var(--c-mist);border-radius:var(--r-full);padding:7px 16px;
  font-size:13px;font-weight:600;color:var(--c-ink);
}
.step-chip::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent);}

/* ---------- 进度步骤条 ---------- */
.track-section{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.track{position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:24px;margin-top:56px;}
.track::before{
  content:"";position:absolute;left:6%;right:6%;top:21px;height:2px;
  background:repeating-linear-gradient(90deg,var(--c-line) 0 8px,transparent 8px 16px);
}
.track-step{position:relative;text-align:center;}
.track-dot{
  position:relative;z-index:1;width:44px;height:44px;margin:0 auto 16px;
  border-radius:50%;background:var(--c-surface);border:2px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:14px;font-weight:700;color:var(--c-muted);
  transition:border-color .24s var(--ease),color .24s var(--ease),background-color .24s var(--ease);
}
.track-step:hover .track-dot{border-color:var(--c-brand-deep);color:var(--c-ink);background:var(--c-brand);}
.track-step h3{font-size:15px;font-weight:700;margin-bottom:6px;}
.track-step p{font-size:13px;color:var(--c-muted);line-height:1.6;}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:56px;padding:14px 0;text-align:left;
  font-size:17px;font-weight:700;color:var(--c-ink);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--c-brand-deep);}
.faq-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;border:1px solid var(--c-line);
  position:relative;transition:transform .26s var(--ease),background-color .26s var(--ease),border-color .26s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-ink);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:11px;height:1.5px;}
.faq-icon::after{width:1.5px;height:11px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--c-brand);border-color:var(--c-brand);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .26s var(--ease),padding .26s var(--ease);
}
.faq-item.is-open .faq-a{padding-bottom:24px;}
.faq-a p{color:var(--c-muted);font-size:15px;line-height:1.85;max-width:76ch;}

/* ---------- CTA ---------- */
.cta{background:var(--c-dark);color:var(--c-dark-text);}
.cta .inner{
  display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;
  padding:96px 0;
}
.cta h2{font-size:clamp(1.75rem,3.2vw,2.6rem);line-height:1.18;margin-bottom:18px;}
.cta h2 em{font-style:normal;color:var(--c-brand);}
.cta p{color:rgba(244,245,240,.72);font-size:16px;max-width:52ch;}
.cta-list{margin-top:26px;display:flex;flex-direction:column;gap:10px;font-size:15px;color:rgba(244,245,240,.8);}
.cta-list li{display:flex;align-items:center;gap:10px;}
.cta-list li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-brand);flex:0 0 6px;}
.form-card{background:#171A17;border:1px solid rgba(244,245,240,.12);border-radius:var(--r-md);padding:32px;}
.form-card h3{font-size:18px;margin-bottom:22px;color:var(--c-dark-text);}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:rgba(244,245,240,.6);margin-bottom:8px;}
.field input{
  width:100%;height:48px;padding:0 16px;border-radius:var(--r-sm);
  background:#101210;border:1px solid rgba(244,245,240,.18);color:var(--c-dark-text);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field input::placeholder{color:rgba(244,245,240,.32);}
.field input:focus{outline:none;border-color:var(--c-brand);box-shadow:0 0 0 2px rgba(198,242,78,.35);}
.field.has-error input{border-color:var(--c-accent);box-shadow:0 0 0 2px rgba(255,90,43,.25);}
.field .err{display:none;font-size:13px;color:var(--c-accent);margin-top:6px;}
.field.has-error .err{display:block;}
.form-card .btn{width:100%;margin-top:8px;}
.form-note{font-size:12px;line-height:1.6;color:rgba(244,245,240,.42);margin-top:12px;}
.form-status{font-size:13px;color:var(--c-brand);margin-top:12px;min-height:18px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-dark);color:var(--c-dark-text);border-top:1px solid rgba(244,245,240,.12);}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:48px;
  padding:72px 0 48px;
}
.footer-brand .logo-mark,.footer-brand .logo-sub{color:var(--c-dark-text);}
.footer-brand p{margin-top:18px;font-size:14px;color:rgba(244,245,240,.6);max-width:38ch;line-height:1.75;}
.footer-col h4{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--c-brand);margin-bottom:18px;font-weight:700;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:rgba(244,245,240,.72);transition:color .2s var(--ease),transform .2s var(--ease);display:inline-block;}
.footer-col a:hover{color:var(--c-brand);transform:translateY(1px);}
.footer-contact li{font-size:14px;color:rgba(244,245,240,.66);}
.footer-contact b{color:var(--c-dark-text);font-weight:600;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding:24px 0 32px;border-top:1px solid rgba(244,245,240,.12);
  font-size:13px;color:rgba(244,245,240,.5);
}

/* ---------- 移动底部 Tab ---------- */
.mobile-tabbar{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:150;
  height:58px;padding-bottom:env(safe-area-inset-bottom);
  background:rgba(250,250,247,.96);
  backdrop-filter:blur(12px);
  border-top:1px solid var(--c-line);
}
.mobile-tabbar .tab-item{
  position:relative;flex:1;height:58px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:9px;font-weight:600;color:var(--c-muted);
  transition:color .2s var(--ease);
}
.mobile-tabbar .tab-item svg{width:21px;height:21px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.mobile-tabbar .tab-item.is-active{color:var(--c-ink);gap:0;}
.mobile-tabbar .tab-item.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:22px;height:3px;background:var(--c-brand);border-radius:0 0 3px 3px;
}
.mobile-tabbar .tab-cta{color:var(--c-ink);}
.mobile-tabbar .tab-cta svg{stroke:var(--c-ink);}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}
.reveal.d1{transition-delay:.06s;}
.reveal.d2{transition-delay:.12s;}
.reveal.d3{transition-delay:.18s;}

/* ---------- 断点 ---------- */
@media (max-width:1024px){
  .container{padding:0 32px;}
  .section{padding:88px 0;}
  .zz-row{gap:40px;}
  .lead-strip .inner{grid-template-columns:1fr;gap:28px;}
  .lead-meta{justify-content:flex-start;}
  .cta .inner{grid-template-columns:1fr;gap:40px;padding:80px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
  .track{grid-template-columns:repeat(3,1fr);gap:32px 24px;}
  .track::before{display:none;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .section{padding:64px 0;}
  .nav-desktop{display:none;}
  .hamburger{display:flex;}
  .header-right .btn-sm{display:none;}
  .page-hero{min-height:auto;padding:72px 0 56px;}
  .hero-lead{font-size:16px;}
  .zigzag{gap:64px;}
  .zz-row{grid-template-columns:1fr;gap:24px;}
  .zz-row.reverse .zz-media{order:0;}
  .step-num{font-size:34px;}
  .track{grid-template-columns:1fr 1fr;}
  .faq-q{font-size:16px;height:auto;padding:18px 0;}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding:56px 0 32px;}
  .mobile-tabbar{display:flex;}
  body{padding-bottom:calc(58px + env(safe-area-inset-bottom));}
  .site-footer{padding-bottom:24px;}
}
@media (max-width:480px){
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .hero-facts{gap:10px 24px;font-size:13px;}
  .track{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .form-card{padding:24px 20px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
}

/* roulang page: category2 */
:root{
  --c-bg:#FAFAF7;
  --c-surface:#FFFFFF;
  --c-line:#E4E6DE;
  --c-ink:#101210;
  --c-ink-2:#1B1F1B;
  --c-muted:#6B736A;
  --c-brand:#C6F24E;
  --c-brand-deep:#A8D62F;
  --c-accent:#FF5A2B;
  --c-dark:#101210;
  --c-dark-text:#F4F5F0;
  --r-xs:8px;
  --r-sm:12px;
  --r-md:18px;
  --r-lg:24px;
  --r-full:999px;
  --sh-1:0 1px 2px rgba(16,18,16,.05),0 8px 24px -16px rgba(16,18,16,.18);
  --sh-2:0 18px 40px -20px rgba(16,18,16,.28);
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:96px;--sp-10:128px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-num:"Inter","SF Pro Display","Segoe UI",Arial,sans-serif;
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:3px solid var(--c-brand);outline-offset:2px;border-radius:6px;}
::selection{background:var(--c-brand);color:var(--c-ink);}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px;}
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--dark{background:var(--c-dark);color:var(--c-dark-text);}
.section--muted{background:#F3F4EE;}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-num);
  font-size:12px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--c-muted);font-weight:600;margin-bottom:16px;
}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--c-brand);display:block;}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head h2{
  font-size:clamp(1.75rem,3.2vw,2.75rem);
  line-height:1.15;font-weight:700;letter-spacing:-.01em;
}
.section-head p{margin-top:16px;color:var(--c-muted);font-size:16px;max-width:62ch;}
.section--dark .section-head p{color:rgba(244,245,240,.72);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-sm);
  font-size:15px;font-weight:700;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-sm{height:42px;padding:0 20px;font-size:14px;}
.btn-primary{background:var(--c-ink);color:var(--c-dark-text);}
.btn-primary:hover{background:var(--c-brand);color:var(--c-ink);box-shadow:var(--sh-2);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);background:var(--c-brand-deep);color:var(--c-ink);}
.btn-ghost{background:transparent;color:var(--c-ink);border-color:var(--c-ink);}
.btn-ghost:hover{background:var(--c-ink);color:var(--c-dark-text);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-on-dark{background:transparent;color:var(--c-dark-text);border-color:rgba(244,245,240,.42);}
.btn-on-dark:hover{background:var(--c-dark-text);color:var(--c-ink);border-color:var(--c-dark-text);transform:translateY(-2px);}
.btn-brand{background:var(--c-brand);color:var(--c-ink);}
.btn-brand:hover{background:var(--c-brand-deep);transform:translateY(-2px);box-shadow:0 18px 40px -20px rgba(198,242,78,.7);}
.btn-brand:active{transform:translateY(0);}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;height:44px;font-weight:700;font-size:15px;
  color:var(--c-ink);position:relative;background:none;border:0;cursor:pointer;padding:0;
}
.btn-text::after{
  content:"";position:absolute;left:0;right:0;bottom:6px;height:2px;background:var(--c-brand);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.btn-text:hover::after{transform:scaleX(1);}
.btn-text:hover{color:var(--c-ink-2);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:150;
  height:var(--header-h);
  background:rgba(250,250,247,.92);
  border-bottom:1px solid transparent;
  transition:height .28s var(--ease),border-color .28s var(--ease),background-color .28s var(--ease);
}
.site-header.is-scrolled{
  height:62px;
  border-bottom:1px solid var(--c-line);
  background:rgba(250,250,247,.96);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:100%;}
.logo{display:inline-flex;align-items:baseline;gap:2px;font-weight:800;letter-spacing:-.02em;}
.logo-mark{font-size:21px;color:var(--c-ink);}
.logo-sub{font-size:13px;color:var(--c-muted);font-weight:700;letter-spacing:.02em;}
.logo:hover .logo-sub{color:var(--c-accent);}
.nav-desktop{display:flex;align-items:center;gap:32px;margin-left:auto;margin-right:32px;}
.nav-link{
  position:relative;font-size:15px;font-weight:600;color:var(--c-ink-2);
  padding:6px 0;transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--c-brand);
  transform:scaleX(0);transform-origin:left;transition:transform .18s var(--ease);
}
.nav-link:hover{color:var(--c-ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-ink);}
.nav-link.is-active::after{transform:scaleX(1);}
.header-right{display:flex;align-items:center;gap:14px;}
.hamburger{
  display:none;width:44px;height:44px;border:1px solid var(--c-line);background:var(--c-surface);
  border-radius:var(--r-sm);cursor:pointer;padding:0;position:relative;
  transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.hamburger span{
  position:absolute;left:50%;width:18px;height:2px;background:var(--c-ink);border-radius:2px;
  transform:translateX(-50%);transition:transform .24s var(--ease),opacity .2s var(--ease);
}
.hamburger span:nth-child(1){top:16px;}
.hamburger span:nth-child(2){top:21px;}
.hamburger span:nth-child(3){top:26px;}
.hamburger:hover{border-color:var(--c-ink);}
.hamburger.is-open span:nth-child(1){transform:translateX(-50%) translateY(5px) rotate(45deg);}
.hamburger.is-open span:nth-child(2){opacity:0;}
.hamburger.is-open span:nth-child(3){transform:translateX(-50%) translateY(-5px) rotate(-45deg);}

/* 全屏抽屉 */
.drawer{
  position:fixed;inset:0;z-index:200;background:var(--c-dark);color:var(--c-dark-text);
  display:flex;flex-direction:column;padding:24px 24px 40px;
  transform:translateY(-100%);opacity:0;visibility:hidden;
  transition:transform .34s var(--ease),opacity .26s var(--ease),visibility .34s;
}
.drawer.is-open{transform:translateY(0);opacity:1;visibility:visible;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:40px;}
.drawer .logo-mark{color:var(--c-dark-text);}
.drawer .logo-sub{color:rgba(244,245,240,.6);}
.drawer-close{
  width:44px;height:44px;border-radius:var(--r-sm);border:1px solid rgba(244,245,240,.24);
  background:transparent;color:var(--c-dark-text);font-size:18px;cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.drawer-close:hover{background:var(--c-brand);color:var(--c-ink);border-color:var(--c-brand);}
.drawer-nav{display:flex;flex-direction:column;gap:6px;}
.drawer-nav a{
  display:flex;align-items:baseline;gap:16px;
  font-size:20px;font-weight:700;padding:16px 0;
  border-bottom:1px solid rgba(244,245,240,.1);
  transition:color .2s var(--ease),padding-left .24s var(--ease);
}
.drawer-nav a:hover{color:var(--c-brand);padding-left:8px;}
.drawer-nav .idx{font-family:var(--font-num);font-size:12px;color:var(--c-brand);letter-spacing:.1em;}
.drawer-foot{margin-top:auto;padding-top:32px;font-size:13px;color:rgba(244,245,240,.55);}

/* ---------- Page Hero ---------- */
.page-hero{
  position:relative;color:var(--c-dark-text);
  padding:calc(var(--header-h) + 72px) 0 72px;
  min-height:44vh;
  display:flex;align-items:center;
  background-color:var(--c-dark);
  background-image:linear-gradient(180deg,rgba(16,18,16,.72),rgba(16,18,16,.82)),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:rgba(244,245,240,.14);
}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:rgba(244,245,240,.62);margin-bottom:22px;}
.breadcrumb a{transition:color .2s var(--ease);}
.breadcrumb a:hover{color:var(--c-brand);}
.breadcrumb span.sep{opacity:.5;}
.page-hero h1{
  font-size:clamp(2.1rem,4.4vw,3.6rem);
  line-height:1.06;font-weight:800;letter-spacing:-.02em;max-width:20ch;
}
.page-hero .lead{
  margin-top:22px;max-width:60ch;font-size:17px;color:rgba(244,245,240,.78);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero-strip{
  display:flex;flex-wrap:wrap;gap:12px 40px;margin-top:44px;
  padding-top:22px;border-top:1px solid rgba(244,245,240,.16);
  font-size:13px;color:rgba(244,245,240,.7);
}
.hero-strip b{color:var(--c-dark-text);font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:15px;margin-right:6px;}
.scroll-cue{
  position:absolute;right:40px;bottom:32px;display:flex;flex-direction:column;align-items:center;gap:10px;
  font-family:var(--font-num);font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:rgba(244,245,240,.6);
}
.scroll-cue i{font-size:13px;animation:cue 2.2s var(--ease) infinite;}
@keyframes cue{0%,100%{transform:translateY(0);}50%{transform:translateY(8px);}}

/* ---------- 筛选胶囊 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:36px;}
.chip{
  height:38px;padding:0 18px;border-radius:var(--r-full);
  border:1px solid var(--c-line);background:var(--c-surface);
  font-size:14px;font-weight:600;cursor:pointer;
  transition:border-color .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.chip:hover{border-color:var(--c-ink);transform:translateY(-1px);}
.chip:active{transform:translateY(0);}
.chip.is-active{background:var(--c-ink);border-color:var(--c-ink);color:var(--c-dark-text);}

/* ---------- 矩阵规格卡 ---------- */
.matrix-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.matrix-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-sm);
  padding:26px;box-shadow:var(--sh-1);
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.matrix-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--c-brand-deep);}
.matrix-card.is-hidden{display:none;}
.matrix-card .tag{
  display:inline-block;font-size:12px;font-weight:700;padding:4px 12px;border-radius:var(--r-full);
  background:#EFF3E4;color:var(--c-ink);margin-bottom:14px;
}
.matrix-card h3{font-size:1.2rem;font-weight:700;line-height:1.35;}
.spec-list{margin:18px 0 0;}
.spec-row{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding:10px 0;border-bottom:1px dashed var(--c-line);
}
.spec-row:last-child{border-bottom:0;}
.spec-row dt{font-size:13px;color:var(--c-muted);}
.spec-row dd{
  margin:0;font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-weight:700;font-size:14px;text-align:right;color:var(--c-ink);
}
.matrix-card .verdict{
  margin-top:16px;padding-top:16px;border-top:1px solid var(--c-line);
  font-size:14px;color:var(--c-muted);line-height:1.75;
}
.empty-note{
  display:none;border:1px dashed var(--c-line);border-radius:var(--r-md);
  padding:48px 24px;text-align:center;color:var(--c-muted);background:var(--c-surface);
}
.empty-note i{font-size:22px;color:var(--c-brand-deep);display:block;margin-bottom:12px;}

/* ---------- 对照表 ---------- */
.table-wrap{
  overflow-x:auto;border:1px solid var(--c-line);border-radius:var(--r-md);
  background:var(--c-surface);box-shadow:var(--sh-1);
  -webkit-overflow-scrolling:touch;
}
table{min-width:760px;}
thead th{
  font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--c-muted);
  font-family:var(--font-num);font-weight:700;text-align:left;
  padding:16px 22px;background:#F3F4EE;border-bottom:1px solid var(--c-line);white-space:nowrap;
}
tbody td{
  padding:16px 22px;border-bottom:1px solid var(--c-line);font-size:15px;
  font-variant-numeric:tabular-nums;
}
tbody tr:last-child td{border-bottom:0;}
tbody tr:nth-child(even){background:#FBFBF8;}
tbody tr:hover{background:#F6F9EC;}
td .ver{font-family:var(--font-num);font-weight:700;}

/* ---------- 核对清单 ---------- */
.check-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.check-list{display:flex;flex-direction:column;}
.check-item{
  display:flex;gap:20px;padding:24px 0;border-bottom:1px solid var(--c-line);
}
.check-item:first-child{padding-top:0;}
.check-item:last-child{border-bottom:0;padding-bottom:0;}
.check-num{
  flex:0 0 auto;font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:15px;font-weight:800;color:var(--c-accent);padding-top:2px;
}
.check-item h3{font-size:1.08rem;font-weight:700;line-height:1.5;}
.check-item p{margin-top:8px;font-size:15px;color:var(--c-muted);line-height:1.8;}
.check-figure{
  position:relative;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--c-line);
  box-shadow:var(--sh-1);background:var(--c-surface);
}
.check-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0;}
.check-figure figcaption{
  padding:16px 20px;font-size:13px;color:var(--c-muted);border-top:1px solid var(--c-line);
}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--c-line);max-width:920px;}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{
  width:100%;min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:20px;
  background:none;border:0;padding:20px 0;font-size:17px;font-weight:700;text-align:left;cursor:pointer;
  color:var(--c-ink);transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--c-accent);}
.faq-icon{
  flex:0 0 auto;width:28px;height:28px;border-radius:var(--r-full);border:1px solid var(--c-line);
  display:grid;place-items:center;font-size:13px;color:var(--c-ink);
  transition:transform .26s var(--ease),background-color .26s var(--ease),border-color .26s var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--c-brand);border-color:var(--c-brand);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease);}
.faq-a p{
  margin:0 0 22px;color:var(--c-muted);line-height:1.85;font-size:15.5px;max-width:72ch;
}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--c-dark);color:var(--c-dark-text);
  padding:96px 0;
}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start;}
.cta-grid h2{font-size:clamp(1.75rem,3.2vw,2.5rem);line-height:1.16;font-weight:700;}
.cta-grid h2 em{font-style:normal;color:var(--c-brand);}
.cta-grid .lead{margin-top:18px;color:rgba(244,245,240,.74);max-width:46ch;}
.cta-points{margin-top:28px;display:flex;flex-direction:column;gap:12px;font-size:15px;}
.cta-points li{display:flex;gap:10px;align-items:flex-start;color:rgba(244,245,240,.82);}
.cta-points i{color:var(--c-brand);font-size:13px;margin-top:6px;}
.form-card{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(244,245,240,.16);
  border-radius:var(--r-md);padding:32px;
}
.form-card h3{font-size:1.25rem;font-weight:700;}
.form-card .hint{margin-top:8px;font-size:14px;color:rgba(244,245,240,.62);}
.field{margin-top:20px;}
.field label{display:block;font-size:13px;color:rgba(244,245,240,.7);margin-bottom:8px;}
.field input{
  width:100%;height:48px;border-radius:var(--r-sm);
  border:1px solid rgba(244,245,240,.24);background:rgba(255,255,255,.04);
  color:var(--c-dark-text);padding:0 16px;font-size:15px;font-family:inherit;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.field input::placeholder{color:rgba(244,245,240,.42);}
.field input:hover{border-color:rgba(244,245,240,.44);}
.field input:focus{
  outline:none;border-color:var(--c-brand);
  box-shadow:0 0 0 3px rgba(198,242,78,.26);background:rgba(255,255,255,.07);
}
.form-card .btn{width:100%;margin-top:24px;}
.form-card .privacy{margin-top:14px;font-size:12px;color:rgba(244,245,240,.5);line-height:1.7;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-dark);color:var(--c-dark-text);
  border-top:1px solid rgba(244,245,240,.14);
  padding:72px 0 36px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:48px;}
.footer-brand .logo-mark{color:var(--c-dark-text);}
.footer-brand .logo-sub{color:rgba(244,245,240,.6);}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.85;color:rgba(244,245,240,.64);max-width:34ch;}
.footer-col h4{
  font-family:var(--font-num);font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--c-brand);font-weight:700;margin-bottom:18px;
}
.footer-col li{margin-bottom:12px;}
.footer-col a{
  font-size:14px;color:rgba(244,245,240,.74);
  transition:color .2s var(--ease),transform .2s var(--ease);
  display:inline-block;
}
.footer-col a:hover{color:var(--c-brand);transform:translateY(1px);}
.footer-contact li{font-size:14px;color:rgba(244,245,240,.64);}
.footer-contact b{color:var(--c-dark-text);font-weight:600;}
.footer-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid rgba(244,245,240,.12);
  display:flex;flex-wrap:wrap;gap:12px 32px;justify-content:space-between;
  font-size:13px;color:rgba(244,245,240,.52);
}

/* ---------- 移动底部 Tab ---------- */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:160;
  background:var(--c-surface);border-top:1px solid var(--c-line);
  padding-bottom:env(safe-area-inset-bottom);
  display:none;
}
.tabbar-inner{display:grid;grid-template-columns:repeat(5,1fr);height:58px;}
.tab-item{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:9.5px;color:var(--c-muted);position:relative;
  transition:color .2s var(--ease);
}
.tab-item i{font-size:16px;transition:color .2s var(--ease);}
.tab-item::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%) scaleX(0);
  width:32px;height:3px;background:var(--c-brand);border-radius:0 0 3px 3px;
  transition:transform .22s var(--ease);
}
.tab-item.is-active{color:var(--c-ink);font-weight:700;}
.tab-item.is-active::before{transform:translateX(-50%) scaleX(1);}
.tab-item.is-active i{color:var(--c-ink);}
.tab-item.is-active .tab-ico{background:var(--c-brand);}
.tab-ico{
  width:26px;height:22px;display:grid;place-items:center;border-radius:8px;
  transition:background-color .2s var(--ease);
}

/* ---------- 进入视口动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .container{padding:0 32px;}
  .footer-grid{gap:36px;}
}
@media (max-width:1024px){
  .nav-desktop{gap:22px;margin-right:18px;}
  .matrix-grid{grid-template-columns:repeat(2,1fr);}
  .check-wrap{grid-template-columns:1fr;gap:40px;}
  .cta-grid{grid-template-columns:1fr;gap:40px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
  .section{padding:80px 0;}
}
@media (max-width:768px){
  body{padding-bottom:calc(58px + env(safe-area-inset-bottom));}
  .container{padding:0 20px;}
  .nav-desktop{display:none;}
  .header-right .btn{display:none;}
  .hamburger{display:block;}
  .tabbar{display:block;}
  .section{padding:56px 0;}
  .section--tight{padding:48px 0;}
  .page-hero{padding:calc(var(--header-h) + 44px) 0 52px;min-height:auto;
    background-image:linear-gradient(180deg,rgba(16,18,16,.76),rgba(16,18,16,.86)),url("/assets/images/backpic/back-1.webp");
  }
  .page-hero h1{font-size:clamp(1.85rem,7.4vw,2.4rem);}
  .hero-strip{gap:10px 24px;font-size:12.5px;}
  .hero-strip b{font-size:14px;}
  .scroll-cue{display:none;}
  .matrix-grid{grid-template-columns:1fr;gap:16px;}
  .section-head{margin-bottom:32px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{margin-top:40px;}
  .cta-band{padding:64px 0;}
  .form-card{padding:24px;}
  .check-item{gap:14px;}
}
@media (max-width:520px){
  body{font-size:16px;}
  .logo-mark{font-size:19px;}
  .logo-sub{font-size:12px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .chip{height:36px;padding:0 14px;font-size:13px;}
  .matrix-card{padding:20px;}
  .faq-q{font-size:16px;}
  .footer-contact li{font-size:13px;}
}
@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: category3 */
:root{
  --c-bg:#FAFAF7;
  --c-surface:#FFFFFF;
  --c-line:#E4E6DE;
  --c-ink:#101210;
  --c-ink-2:#1B1F1B;
  --c-muted:#6B736A;
  --c-brand:#C6F24E;
  --c-brand-deep:#A8D62F;
  --c-accent:#FF5A2B;
  --c-dark:#101210;
  --c-dark-text:#F4F5F0;
  --c-moss:#F1F4EA;

  --r-xs:8px;
  --r-sm:12px;
  --r-md:18px;
  --r-lg:24px;
  --r-full:999px;

  --sh-1:0 1px 2px rgba(16,18,16,.05), 0 8px 24px -16px rgba(16,18,16,.18);
  --sh-2:0 18px 40px -20px rgba(16,18,16,.28);

  --s-1:4px; --s-2:8px; --s-3:12px; --s-4:16px; --s-5:24px;
  --s-6:32px; --s-7:48px; --s-8:64px; --s-9:96px; --s-10:128px;

  --font-cn:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-num:"Inter","Helvetica Neue",Arial,sans-serif;

  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  padding-bottom:calc(58px + env(safe-area-inset-bottom));
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:3px solid var(--c-brand-deep);outline-offset:3px;border-radius:4px;}

.container{max-width:1240px;margin:0 auto;padding:0 40px;}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  height:72px;
  display:flex;align-items:center;
  background:rgba(250,250,247,.86);
  backdrop-filter:blur(12px);
  transition:height .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  height:62px;
  border-bottom:1px solid var(--c-line);
  box-shadow:0 6px 24px -18px rgba(16,18,16,.4);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%;}
.logo{display:inline-flex;align-items:baseline;gap:2px;font-weight:800;letter-spacing:-.01em;}
.logo-mark{font-size:20px;color:var(--c-ink);}
.logo-sub{font-size:15px;font-weight:600;color:var(--c-muted);}
.site-footer .logo-mark{color:var(--c-dark-text);}
.site-footer .logo-sub{color:rgba(244,245,240,.6);}

.nav-desktop{display:flex;align-items:center;gap:32px;margin-left:auto;}
.nav-link{
  position:relative;
  font-size:15.5px;font-weight:600;color:var(--c-ink-2);
  padding:6px 2px;
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--c-brand-deep);
  transition:width .18s var(--ease);
}
.nav-link:hover{color:var(--c-ink);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--c-ink);}
.nav-link.is-active::after{width:100%;}

.header-right{display:flex;align-items:center;gap:14px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-sm);
  font-size:15.5px;font-weight:700;letter-spacing:.01em;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  white-space:nowrap;
}
.btn-sm{height:42px;padding:0 20px;font-size:15px;}
.btn-primary{background:var(--c-ink);color:var(--c-dark-text);}
.btn-primary:hover{background:var(--c-brand);color:var(--c-ink);transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);background:var(--c-brand-deep);color:var(--c-ink);}
.btn-ghost{background:transparent;color:var(--c-ink);border:1px solid var(--c-ink);}
.btn-ghost:hover{background:var(--c-ink);color:var(--c-dark-text);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);background:var(--c-ink-2);}
.btn-brand{background:var(--c-brand);color:var(--c-ink);}
.btn-brand:hover{background:var(--c-brand-deep);transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}

.hamburger{display:none;width:44px;height:44px;flex-direction:column;justify-content:center;gap:5px;align-items:center;border-radius:var(--r-xs);}
.hamburger span{display:block;width:20px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform .25s var(--ease),opacity .25s var(--ease);}
.hamburger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger.is-open span:nth-child(2){opacity:0;}
.hamburger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.drawer{
  position:fixed;inset:0;z-index:90;
  background:var(--c-dark);color:var(--c-dark-text);
  padding:96px 28px calc(96px + env(safe-area-inset-bottom));
  display:flex;flex-direction:column;gap:6px;
  transform:translateY(-100%);
  transition:transform .4s var(--ease);
  overflow-y:auto;
}
.drawer.is-open{transform:translateY(0);}
.drawer a{
  font-size:20px;font-weight:700;padding:16px 0;
  border-bottom:1px solid rgba(244,245,240,.12);
  display:flex;gap:14px;align-items:baseline;
}
.drawer a i{font-size:13px;color:var(--c-brand);font-style:normal;font-family:var(--font-num);letter-spacing:.08em;}
.drawer a:hover{color:var(--c-brand);}
.drawer-close{position:absolute;top:22px;right:24px;font-size:26px;color:var(--c-dark-text);}

/* ---------- mobile tab ---------- */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:85;
  height:calc(58px + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(250,250,247,.96);
  backdrop-filter:blur(14px);
  border-top:1px solid var(--c-line);
  display:none;
}
.tabbar-inner{display:grid;grid-template-columns:repeat(5,1fr);height:58px;}
.tab-item{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:9.5px;font-weight:600;color:var(--c-muted);
}
.tab-item i{font-size:17px;}
.tab-item::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:0;height:3px;background:var(--c-brand-deep);transition:width .25s var(--ease);
}
.tab-item.is-active{color:var(--c-ink);}
.tab-item.is-active i{color:var(--c-brand-deep);}
.tab-item.is-active::before{width:28px;}

/* ---------- breadcrumb ---------- */
.crumb-wrap{padding-top:104px;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--c-muted);}
.crumb a:hover{color:var(--c-ink);text-decoration:underline;text-decoration-color:var(--c-brand-deep);}
.crumb .sep{color:var(--c-line);}
.crumb .cur{color:var(--c-ink);font-weight:600;}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  margin-top:24px;
  border-radius:var(--r-lg);
  overflow:hidden;
  background:var(--c-dark);
  min-height:40vh;
  display:flex;align-items:flex-end;
  padding:clamp(48px,7vw,80px) clamp(24px,5vw,64px);
  isolation:isolate;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(16,18,16,.88) 30%,rgba(16,18,16,.62) 100%);
  z-index:-1;
}
.page-hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2;}
.page-hero-inner{max-width:820px;color:var(--c-dark-text);}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-num);font-size:12px;font-weight:700;letter-spacing:.18em;
  text-transform:uppercase;color:var(--c-brand);margin-bottom:20px;
}
.eyebrow::before{content:"";width:26px;height:3px;background:var(--c-brand);border-radius:2px;}
.page-hero h1{
  font-size:clamp(2rem,4.4vw,3.4rem);
  line-height:1.12;font-weight:800;letter-spacing:-.02em;
  color:var(--c-dark-text);
}
.page-hero h1 em{font-style:normal;color:var(--c-brand);}
.lede{margin-top:20px;font-size:17px;line-height:1.85;color:rgba(244,245,240,.82);max-width:660px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.tag-pill{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 15px;border-radius:var(--r-full);
  font-size:12.5px;font-weight:600;
  background:rgba(198,242,78,.14);color:var(--c-brand);
  border:1px solid rgba(198,242,78,.32);
}

/* ---------- section base ---------- */
.section{padding:clamp(56px,7vw,112px) 0;}
.section-head{max-width:720px;margin-bottom:clamp(32px,5vw,56px);}
.section-head .eyebrow{color:var(--c-accent);}
.section-head .eyebrow::before{background:var(--c-accent);}
.section-head h2{
  font-size:clamp(1.75rem,3.2vw,2.6rem);
  line-height:1.15;font-weight:700;letter-spacing:-.015em;
}
.section-head p{margin-top:16px;color:var(--c-muted);font-size:16.5px;}

/* ---------- timeline ---------- */
.timeline{position:relative;max-width:900px;}
.timeline::before{
  content:"";position:absolute;left:27px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,var(--c-brand-deep),var(--c-line));
}
.tl-item{position:relative;padding:0 0 44px 76px;}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{
  position:absolute;left:14px;top:4px;width:28px;height:28px;border-radius:50%;
  background:var(--c-surface);border:2px solid var(--c-brand-deep);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:11.5px;font-weight:800;color:var(--c-ink);
}
.tl-phase{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-num);font-size:11.5px;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--c-accent);margin-bottom:8px;
}
.tl-item h3{font-size:19px;font-weight:700;margin-bottom:10px;letter-spacing:-.01em;}
.tl-item p{color:var(--c-muted);font-size:16px;max-width:70ch;}
.tl-list{margin-top:14px;display:grid;gap:10px;}
.tl-list li{display:flex;gap:10px;font-size:15.5px;color:var(--c-ink-2);}
.tl-list li i{color:var(--c-brand-deep);font-size:13px;margin-top:7px;}
.tl-card{
  margin-top:16px;background:var(--c-moss);border:1px solid var(--c-line);
  border-radius:var(--r-md);padding:18px 20px;
}
.tl-card strong{display:block;font-size:14.5px;margin-bottom:6px;}
.tl-card span{font-size:14.5px;color:var(--c-muted);}

/* ---------- accordion ---------- */
.faq-group{margin-bottom:40px;}
.faq-group:last-child{margin-bottom:0;}
.group-label{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-full);
  background:var(--c-brand);color:var(--c-ink);
  font-size:12.5px;font-weight:700;letter-spacing:.02em;
  margin-bottom:18px;
}
.acc{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;}
.acc + .acc{margin-top:12px;}
.acc-btn{
  width:100%;min-height:58px;padding:16px 22px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  text-align:left;font-size:16.5px;font-weight:700;color:var(--c-ink);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.acc-btn:hover{color:var(--c-accent);}
.acc-btn .plus{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--c-line);display:flex;align-items:center;justify-content:center;
  font-size:14px;color:var(--c-muted);
  transition:transform .26s var(--ease),background .26s var(--ease),color .26s var(--ease);
}
.acc.is-open .acc-btn{color:var(--c-ink);}
.acc.is-open .acc-btn .plus{transform:rotate(45deg);background:var(--c-brand);color:var(--c-ink);border-color:var(--c-brand);}
.acc-panel{height:0;overflow:hidden;transition:height .26s var(--ease);}
.acc-panel-inner{padding:0 22px 22px;color:var(--c-muted);font-size:16px;line-height:1.85;}
.acc-panel-inner b{color:var(--c-ink-2);}

/* ---------- safety cards ---------- */
.safe-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.safe-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:28px 26px;box-shadow:var(--sh-1);
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.safe-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--c-brand-deep);}
.safe-icon{
  width:44px;height:44px;border-radius:var(--r-sm);
  background:var(--c-moss);display:flex;align-items:center;justify-content:center;
  color:var(--c-ink);font-size:18px;margin-bottom:18px;
}
.safe-card:hover .safe-icon{background:var(--c-brand);}
.safe-card h3{font-size:18px;font-weight:700;margin-bottom:10px;}
.safe-card p{color:var(--c-muted);font-size:15.5px;}

/* ---------- support strip ---------- */
.support{
  background:var(--c-dark);color:var(--c-dark-text);
  border-radius:var(--r-lg);padding:clamp(32px,5vw,56px);
  display:grid;grid-template-columns:1.2fr 1fr;gap:clamp(28px,4vw,56px);align-items:center;
}
.support h2{font-size:clamp(1.6rem,2.8vw,2.2rem);line-height:1.2;font-weight:700;}
.support h2 em{font-style:normal;color:var(--c-brand);}
.support p{margin-top:14px;color:rgba(244,245,240,.72);font-size:16px;max-width:52ch;}
.support-list{display:grid;gap:14px;margin-top:24px;}
.support-list li{display:flex;gap:12px;font-size:15.5px;color:rgba(244,245,240,.9);}
.support-list li i{color:var(--c-brand);margin-top:6px;font-size:13px;}
.support-figure img{border-radius:var(--r-md);aspect-ratio:4/3;object-fit:cover;}

/* ---------- CTA / form ---------- */
.cta-block{
  background:var(--c-dark);color:var(--c-dark-text);
  border-radius:var(--r-lg);
  padding:clamp(32px,5vw,64px);
  display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,4vw,64px);
}
.cta-block h2{font-size:clamp(1.7rem,3vw,2.4rem);line-height:1.18;font-weight:700;letter-spacing:-.015em;}
.cta-block h2 em{font-style:normal;color:var(--c-brand);}
.cta-block p{margin-top:16px;color:rgba(244,245,240,.74);font-size:16px;max-width:48ch;}
.cta-points{display:grid;gap:12px;margin-top:26px;}
.cta-points li{display:flex;gap:12px;font-size:15.5px;color:rgba(244,245,240,.9);}
.cta-points li i{color:var(--c-brand);margin-top:6px;font-size:13px;}
.form-card{
  background:rgba(244,245,240,.06);
  border:1px solid rgba(244,245,240,.16);
  border-radius:var(--r-md);padding:26px 24px;
}
.form-row{margin-bottom:16px;}
.form-row label{display:block;font-size:13px;font-weight:600;color:rgba(244,245,240,.7);margin-bottom:8px;}
.form-row input{
  width:100%;height:48px;padding:0 16px;border-radius:var(--r-sm);
  background:rgba(244,245,240,.08);
  border:1px solid rgba(244,245,240,.22);
  color:var(--c-dark-text);font-size:15.5px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.form-row input::placeholder{color:rgba(244,245,240,.42);}
.form-row input:focus{
  outline:none;border-color:var(--c-brand);
  box-shadow:0 0 0 2px rgba(198,242,78,.45);
  background:rgba(244,245,240,.12);
}
.form-row.has-error input{border-color:var(--c-accent);box-shadow:0 0 0 2px rgba(255,90,43,.28);}
.form-hint{font-size:12.5px;color:var(--c-accent);margin-top:6px;display:none;}
.form-row.has-error .form-hint{display:block;}
.form-card .btn{width:100%;margin-top:6px;background:var(--c-brand);color:var(--c-ink);}
.form-card .btn:hover{background:var(--c-brand-deep);color:var(--c-ink);}
.privacy-note{margin-top:12px;font-size:11.5px;line-height:1.6;color:rgba(244,245,240,.5);}

/* ---------- footer ---------- */
.site-footer{
  background:var(--c-dark);color:var(--c-dark-text);
  margin-top:clamp(56px,7vw,104px);
  padding:clamp(48px,6vw,80px) 0 32px;
  border-top:1px solid rgba(244,245,240,.1);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1.2fr 1.3fr;gap:40px;}
.footer-brand p{margin-top:16px;font-size:14.5px;color:rgba(244,245,240,.62);max-width:38ch;}
.footer-col h4{
  font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--c-brand);margin-bottom:18px;
}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:14.5px;color:rgba(244,245,240,.8);transition:color .2s var(--ease),transform .2s var(--ease);display:inline-block;}
.footer-col a:hover{color:var(--c-brand);transform:translateY(1px);}
.footer-contact li{font-size:14px;color:rgba(244,245,240,.62);}
.footer-contact b{color:rgba(244,245,240,.92);font-weight:600;}
.footer-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid rgba(244,245,240,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(244,245,240,.55);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}
.reveal.d1{transition-delay:.06s;}
.reveal.d2{transition-delay:.12s;}
.reveal.d3{transition-delay:.18s;}

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

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .container{padding:0 28px;}
  .nav-desktop{gap:22px;}
  .safe-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .support{grid-template-columns:1fr;}
  .cta-block{grid-template-columns:1fr;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .nav-desktop{display:none;}
  .hamburger{display:flex;}
  .tabbar{display:block;}
  .header-right .btn-sm{display:none;}
  .crumb-wrap{padding-top:92px;}
  .page-hero{min-height:46vh;border-radius:var(--r-md);}
  .timeline::before{left:13px;}
  .tl-dot{left:0;width:28px;height:28px;}
  .tl-item{padding-left:52px;}
  .safe-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:480px){
  body{font-size:16px;}
  .btn{width:100%;}
  .header-right .btn{width:auto;}
  .page-hero h1{font-size:1.85rem;}
  .acc-btn{font-size:15.5px;padding:14px 16px;}
  .acc-panel-inner{padding:0 16px 18px;font-size:15px;}
}