/* roulang page: index */
:root{
  --ink:#0D0F12;
  --ink-2:#1B1F26;
  --text:#14161A;
  --text-2:#5A6068;
  --text-3:#8A9098;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E4E0D6;
  --line-dark:rgba(255,255,255,.10);
  --lime:#C2F542;
  --flame:#FF6A2B;
  --r-card:16px;
  --r-img:12px;
  --r-pill:999px;
  --shadow-hover:0 12px 32px rgba(13,15,18,.08);
  --container:1200px;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--paper);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button,input,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding-left:20px;padding-right:20px;}
.container-wide{max-width:1320px;}
@media (min-width:768px){.container{padding-left:32px;padding-right:32px;}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,239,.88);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s ease,background .3s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 24px rgba(13,15,18,.07);background:rgba(246,244,239,.96);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:14px;height:70px;transition:height .3s ease;}
.site-header.is-scrolled .nav-inner{height:60px;}
.brand{display:flex;align-items:center;gap:10px;min-width:0;}
.brand-mark{
  display:grid;place-items:center;flex:0 0 auto;
  width:38px;height:38px;border-radius:12px;
  background:var(--ink);color:var(--lime);
  font-family:var(--mono);font-size:13px;font-weight:700;letter-spacing:.02em;
}
.brand-name{
  font-size:16px;font-weight:800;letter-spacing:-.01em;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.nav-menu{display:none;align-items:center;gap:4px;padding:4px;border:1px solid var(--line);border-radius:var(--r-pill);background:rgba(255,255,255,.75);}
.nav-link{
  display:inline-block;padding:8px 18px;border-radius:var(--r-pill);
  font-size:14px;font-weight:600;color:var(--text-2);
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--text);background:rgba(13,15,18,.06);}
.nav-link.is-active{background:var(--ink);color:#fff;}
.nav-actions{display:flex;align-items:center;gap:10px;}
.nav-menu-cta{display:none;}
.nav-toggle{
  display:inline-grid;place-items:center;width:42px;height:42px;
  border:1px solid var(--line);border-radius:14px;background:#fff;cursor:pointer;
  transition:border-color .2s ease,background .2s ease;
}
.nav-toggle:hover{border-color:var(--ink);}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;}
.nav-toggle span+span{margin-top:5px;}
@media (min-width:1024px){
  .nav-menu{display:flex;}
  .nav-toggle{display:none;}
  .nav-menu-cta{display:inline-flex;}
}

/* mobile drawer */
.nav-drawer{
  position:fixed;inset:0;z-index:90;
  background:var(--ink);color:#fff;
  transform:translateX(102%);
  transition:transform .32s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;
  padding:20px 22px 28px;
  overflow-y:auto;
}
.nav-drawer.open{transform:translateX(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:34px;}
.drawer-close{
  width:42px;height:42px;border-radius:14px;border:1px solid var(--line-dark);
  background:transparent;color:#fff;font-size:20px;line-height:1;cursor:pointer;
  transition:background .2s ease;
}
.drawer-close:hover{background:rgba(255,255,255,.08);}
.drawer-nav{display:flex;flex-direction:column;gap:6px;}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 4px;border-bottom:1px solid var(--line-dark);
  font-size:22px;font-weight:800;letter-spacing:-.01em;color:#fff;
  opacity:0;transform:translateY(10px);
  transition:opacity .3s ease,transform .3s ease,color .2s ease;
}
.nav-drawer.open .drawer-link{opacity:1;transform:none;}
.nav-drawer.open .drawer-link:nth-child(1){transition-delay:.06s;}
.nav-drawer.open .drawer-link:nth-child(2){transition-delay:.12s;}
.nav-drawer.open .drawer-link:nth-child(3){transition-delay:.18s;}
.drawer-link span{font-size:13px;font-weight:500;color:rgba(255,255,255,.45);font-family:var(--mono);}
.drawer-link:hover{color:var(--lime);}
.drawer-cta{margin-top:auto;padding-top:28px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);border:1px solid transparent;
  padding:13px 26px;font-size:15px;font-weight:700;line-height:1.2;
  cursor:pointer;white-space:nowrap;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,filter .2s ease;
}
.btn .arrow{display:inline-block;transition:transform .2s ease;}
.btn:hover .arrow{transform:translateX(4px);}
.btn-primary{background:var(--lime);color:var(--ink);}
.btn-primary:hover{filter:brightness(.94);transform:translateY(-1px);}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;}
.btn-light{background:#fff;color:var(--ink);}
.btn-light:hover{filter:brightness(.96);transform:translateY(-1px);}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.45);color:#fff;}
.btn-outline-light:hover{background:#fff;border-color:#fff;color:var(--ink);}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-lg{padding:17px 34px;font-size:17px;}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none;}

/* ---------- hero ---------- */
.hero{position:relative;background:var(--ink);color:#fff;overflow:hidden;padding:64px 0 0;}
.hero-bg{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;
  opacity:.30;
}
.hero-grid-lines{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:68px 68px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 92%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 92%);
}
.hero-inner{position:relative;z-index:2;display:grid;gap:44px;}
@media (min-width:1024px){
  .hero{padding:88px 0 0;}
  .hero-inner{grid-template-columns:1.08fr .92fr;align-items:center;gap:56px;}
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  padding:7px 15px;border-radius:var(--r-pill);
  border:1px solid var(--line-dark);background:rgba(255,255,255,.05);
  font-size:12px;letter-spacing:.08em;color:rgba(255,255,255,.78);
}
.hero-eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--lime);display:inline-block;font-style:normal;}
.hero h1{
  margin-top:22px;
  font-size:34px;line-height:1.12;font-weight:900;letter-spacing:-.02em;
}
@media (min-width:768px){.hero h1{font-size:48px;}}
@media (min-width:1024px){.hero h1{font-size:62px;}}
.hero-sub{margin-top:18px;font-size:16px;line-height:1.75;color:rgba(255,255,255,.72);max-width:34em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:28px;font-size:13px;color:rgba(255,255,255,.6);}
.hero-points li{display:flex;align-items:center;gap:8px;}
.hero-points li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--lime);}
.hero-visual{position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--line-dark);display:none;box-shadow:0 30px 70px rgba(0,0,0,.35);}
@media (min-width:1024px){.hero-visual{display:block;}}
.hero-visual img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.hero-visual-tag{
  position:absolute;left:16px;bottom:16px;right:16px;
  background:rgba(13,15,18,.78);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border:1px solid var(--line-dark);border-radius:14px;
  padding:14px 16px;font-size:13px;color:rgba(255,255,255,.82);line-height:1.6;
}
.hero-stats{
  position:relative;z-index:2;margin-top:52px;
  border-top:1px solid var(--line-dark);
  display:grid;grid-template-columns:repeat(2,1fr);
  gap:0 20px;
}
@media (min-width:768px){
  .hero-stats{grid-template-columns:repeat(4,1fr);margin-top:64px;}
  .stat{padding:26px 26px 30px;}
  .stat:first-child{padding-left:0;}
  .stat+.stat{border-left:1px solid var(--line-dark);}
}
.stat{padding:20px 0 24px;}
.stat-num{font-family:var(--mono);font-size:27px;font-weight:700;color:var(--lime);letter-spacing:-.01em;line-height:1.2;}
.stat-label{margin-top:6px;font-size:13px;color:rgba(255,255,255,.58);letter-spacing:.03em;}

/* ---------- sections ---------- */
.section{padding:56px 0;}
@media (min-width:768px){.section{padding:96px 0;}}
.section-tight{padding:44px 0;}
@media (min-width:768px){.section-tight{padding:64px 0;}}
.section-dark{background:var(--ink);color:#fff;}
.section-soft{background:#FFFFFF;}
.section-head{max-width:760px;margin-bottom:36px;}
@media (min-width:768px){.section-head{margin-bottom:52px;}}
.section-tag{
  display:inline-block;padding:5px 13px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;
  font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--text-2);
  font-family:var(--mono);text-transform:uppercase;
}
.section-dark .section-tag{background:rgba(255,255,255,.05);border-color:var(--line-dark);color:rgba(255,255,255,.7);}
.section-title{margin-top:16px;font-size:26px;line-height:1.22;font-weight:800;letter-spacing:-.02em;}
@media (min-width:768px){.section-title{font-size:34px;}}
.section-desc{margin-top:14px;font-size:15px;line-height:1.8;color:var(--text-2);}
.section-dark .section-desc{color:rgba(255,255,255,.66);}

/* ---------- steps ---------- */
.step{
  display:grid;gap:22px;align-items:center;
  padding:32px 0;border-top:1px solid var(--line);
}
.step:last-child{border-bottom:1px solid var(--line);}
@media (min-width:1024px){
  .step{grid-template-columns:1fr 1fr;gap:64px;padding:48px 0;}
  .step.reverse .step-media{order:1;}
  .step.reverse .step-text{order:2;}
}
.step-media{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:#fff;}
.step-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s ease;}
.step-media:hover img{transform:scale(1.03);}
.step-num{font-family:var(--mono);font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--text-3);}
.step-title{margin-top:10px;font-size:21px;font-weight:800;letter-spacing:-.01em;line-height:1.35;}
@media (min-width:768px){.step-title{font-size:24px;}}
.step-text p{margin-top:12px;font-size:15px;line-height:1.85;color:var(--text-2);}
.step-list{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.step-list li{position:relative;padding-left:20px;font-size:14px;color:var(--text-2);line-height:1.7;}
.step-list li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:3px;background:var(--lime);}

/* ---------- reward carousel ---------- */
.reward-wrap{position:relative;}
.reward-track{
  display:flex;gap:20px;overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:6px 20px 22px;margin:0 -20px;
  scrollbar-width:none;
}
.reward-track::-webkit-scrollbar{display:none;}
@media (min-width:768px){.reward-track{padding:6px 32px 26px;margin:0 -32px;}}
.reward-card{
  flex:0 0 84%;scroll-snap-align:start;
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
@media (min-width:768px){.reward-card{flex:0 0 46%;}}
@media (min-width:1200px){.reward-card{flex:0 0 31.6%;}}
.reward-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(13,15,18,.2);}
.reward-thumb{position:relative;overflow:hidden;border-bottom:1px solid var(--line);}
.reward-thumb img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .4s ease;}
.reward-card:hover .reward-thumb img{transform:scale(1.03);}
.reward-badge{
  position:absolute;left:14px;top:14px;
  padding:5px 12px;border-radius:6px;
  background:var(--flame);color:#fff;
  font-size:12px;font-weight:700;letter-spacing:.04em;
}
.reward-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;}
.reward-name{font-size:18px;font-weight:800;letter-spacing:-.01em;}
.reward-text{margin-top:10px;font-size:14px;line-height:1.8;color:var(--text-2);}
.reward-foot{margin-top:auto;padding-top:18px;border-top:1px dashed var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;}
.reward-time{font-family:var(--mono);font-size:12.5px;color:var(--text-3);letter-spacing:.03em;}
.reward-link{font-size:13.5px;font-weight:700;color:var(--text);display:inline-flex;align-items:center;gap:5px;}
.reward-link:hover{text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px;text-decoration-color:var(--lime);}

/* ---------- progress band ---------- */
.progress-band{
  border:1px solid var(--line-dark);border-radius:20px;
  background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.015));
  padding:28px 24px 30px;
}
@media (min-width:768px){.progress-band{padding:38px 40px 40px;}}
.progress-head{display:flex;flex-wrap:wrap;gap:14px;align-items:flex-end;justify-content:space-between;}
.progress-title{font-size:20px;font-weight:800;letter-spacing:-.01em;}
@media (min-width:768px){.progress-title{font-size:24px;}}
.progress-note{font-size:13px;color:rgba(255,255,255,.55);letter-spacing:.03em;font-family:var(--mono);}
.seg-bar{display:flex;gap:6px;margin-top:22px;}
.seg{flex:1;height:9px;border-radius:999px;background:rgba(255,255,255,.13);transition:background .3s ease;}
.seg.on{background:var(--lime);}
.seg.now{background:var(--flame);}
.progress-grid{display:grid;gap:18px;margin-top:26px;grid-template-columns:1fr;}
@media (min-width:640px){.progress-grid{grid-template-columns:1fr 1fr;gap:24px;}}
.progress-cell{border:1px solid var(--line-dark);border-radius:14px;padding:18px 20px;}
.progress-cell-k{font-size:13px;color:rgba(255,255,255,.55);letter-spacing:.05em;}
.progress-cell-v{margin-top:8px;font-family:var(--mono);font-size:24px;font-weight:700;color:#fff;}
.progress-cell-v em{font-style:normal;color:var(--lime);}
.progress-cell-s{margin-top:6px;font-size:13px;color:rgba(255,255,255,.5);line-height:1.65;}

/* ---------- CTA band ---------- */
.cta-band{background:var(--ink);color:#fff;text-align:center;padding:68px 0;}
@media (min-width:768px){.cta-band{padding:96px 0;}}
.cta-band h2{font-size:26px;font-weight:900;letter-spacing:-.02em;line-height:1.25;}
@media (min-width:768px){.cta-band h2{font-size:38px;}}
.cta-band p{margin:16px auto 0;max-width:44em;font-size:15px;line-height:1.85;color:rgba(255,255,255,.66);}
.cta-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:12px;justify-content:center;}

/* ---------- CMS list ---------- */
.cms-grid{display:grid;gap:20px;grid-template-columns:1fr;}
@media (min-width:768px){.cms-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.cms-grid{grid-template-columns:repeat(3,1fr);}}
.cms-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.cms-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(13,15,18,.2);}
.cms-tag{
  align-self:flex-start;padding:4px 11px;border-radius:6px;
  background:rgba(194,245,66,.35);color:#2C3B00;
  font-size:12px;font-weight:700;letter-spacing:.05em;
}
.cms-title{
  margin-top:14px;font-size:17px;font-weight:800;line-height:1.5;letter-spacing:-.005em;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.cms-excerpt{
  margin-top:10px;font-size:14px;line-height:1.8;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.cms-meta{
  margin-top:auto;padding-top:18px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:12.5px;color:var(--text-3);font-family:var(--mono);letter-spacing:.03em;
}
.cms-more{color:var(--text);font-family:inherit;font-weight:700;font-size:13px;}
.cms-card:hover .cms-more{text-decoration:underline;text-underline-offset:4px;text-decoration-color:var(--lime);text-decoration-thickness:2px;}
.cms-empty{
  border:1px dashed var(--line);border-radius:var(--r-card);
  padding:44px 24px;text-align:center;background:#fff;
}
.cms-empty p{color:var(--text-2);font-size:15px;}
.cms-empty .btn{margin-top:20px;}

/* ---------- stats / proof ---------- */
.proof-grid{display:grid;gap:18px;grid-template-columns:1fr;}
@media (min-width:640px){.proof-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.proof-grid{grid-template-columns:repeat(4,1fr);}}
.proof-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;transition:transform .25s ease,box-shadow .25s ease;
}
.proof-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.proof-k{font-family:var(--mono);font-size:13px;color:var(--text-3);letter-spacing:.08em;}
.proof-v{margin-top:10px;font-family:var(--mono);font-size:30px;font-weight:700;color:var(--text);letter-spacing:-.02em;}
.proof-s{margin-top:8px;font-size:14px;line-height:1.75;color:var(--text-2);}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 4px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:16.5px;font-weight:700;line-height:1.55;
  transition:color .2s ease;
}
.faq-q:hover{color:#000;}
.faq-icon{
  flex:0 0 auto;position:relative;width:22px;height:22px;
  transition:transform .28s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;}
.faq-item.open .faq-icon{transform:rotate(45deg);}
.faq-item.open .faq-icon::before,.faq-item.open .faq-icon::after{background:var(--flame);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease;}
.faq-a p{padding:0 44px 24px 4px;font-size:15px;line-height:1.85;color:var(--text-2);}

/* ---------- feedback form ---------- */
.form-shell{
  display:grid;gap:34px;
  background:#fff;border:1px solid var(--line);border-radius:20px;
  padding:28px 22px;
}
@media (min-width:768px){.form-shell{padding:44px 40px;}}
@media (min-width:1024px){.form-shell{grid-template-columns:.9fr 1.1fr;gap:56px;align-items:start;}}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:700;margin-bottom:8px;letter-spacing:.01em;}
.field input,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:12px;background:#fff;
  padding:0 16px;height:48px;font-size:15px;line-height:48px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:auto;min-height:118px;line-height:1.7;padding:12px 16px;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:#A8AEB6;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--lime);box-shadow:0 0 0 3px rgba(194,245,66,.35);
}
.field-hint{margin-top:8px;font-size:12.5px;color:var(--text-3);}
.field-error{margin-top:8px;font-size:13px;color:var(--flame);display:none;}
.field.has-error input,.field.has-error textarea{border-color:var(--flame);}
.field.has-error .field-error{display:block;}
.form-side h3{font-size:22px;font-weight:800;letter-spacing:-.01em;line-height:1.35;}
@media (min-width:768px){.form-side h3{font-size:26px;}}
.form-side p{margin-top:14px;font-size:15px;line-height:1.85;color:var(--text-2);}
.form-side ul{margin-top:22px;display:flex;flex-direction:column;gap:12px;}
.form-side li{position:relative;padding-left:22px;font-size:14px;color:var(--text-2);line-height:1.75;}
.form-side li::before{
  content:"";position:absolute;left:0;top:8px;width:10px;height:10px;border-radius:3px;
  background:var(--lime);border:1px solid rgba(13,15,18,.15);
}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.68);padding:60px 0 0;}
@media (min-width:768px){.site-footer{padding-top:76px;}}
.footer-grid{display:grid;gap:34px;grid-template-columns:1fr;}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.7fr 1fr 1fr 1.1fr;gap:40px;}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;}
.footer-brand .brand-mark{background:var(--lime);color:var(--ink);}
.footer-brand strong{font-size:16px;font-weight:800;letter-spacing:-.01em;}
.footer-about{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:34em;}
.footer-title{color:#fff;font-size:14px;font-weight:700;letter-spacing:.07em;margin-bottom:16px;}
.footer-link{display:block;font-size:14px;padding:6px 0;color:rgba(255,255,255,.62);transition:color .2s ease,transform .2s ease;}
.footer-link:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;text-decoration-color:var(--lime);transform:translateX(2px);}
.footer-info{font-size:14px;line-height:1.9;color:rgba(255,255,255,.6);}
.footer-bottom{
  margin-top:46px;border-top:1px solid var(--line-dark);
  padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.45);font-family:var(--mono);letter-spacing:.02em;
}

/* ---------- mobile fixed cta ---------- */
.mobile-cta{
  position:fixed;left:16px;right:16px;bottom:16px;z-index:70;
  display:block;
  transition:transform .3s ease,opacity .3s ease;
}
.mobile-cta .btn{width:100%;box-shadow:0 14px 34px rgba(13,15,18,.28);}
@media (min-width:768px){.mobile-cta{display:none;}}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .26s ease-out,transform .26s ease-out;}
.reveal.in{opacity:1;transform:translateY(0);}

@media (max-width:520px){
  .brand-name{font-size:14px;}
  .brand-mark{width:34px;height:34px;border-radius:11px;}
  .hero h1{font-size:31px;}
}

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

/* roulang page: category1 */
:root{
  --ink:#0D0F12;
  --ink-2:#1B1F26;
  --text:#14161A;
  --text-2:#5A6068;
  --text-3:#8A9098;
  --paper:#F6F4EF;
  --card:#FFFFFF;
  --line:#E4E0D6;
  --line-dark:rgba(255,255,255,.10);
  --lime:#C2F542;
  --lime-dim:#A8DC2A;
  --orange:#FF6A2B;
  --radius-card:16px;
  --radius-img:12px;
  --radius-pill:999px;
  --shadow-hover:0 12px 32px rgba(13,15,18,.08);
  --container:1200px;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
ul,ol{margin:0;padding:0}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(246,244,239,.88);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:box-shadow .25s ease}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(13,15,18,.06)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:14px;height:68px;transition:height .25s ease}
.site-header.is-scrolled .header-inner{height:58px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--ink);color:var(--lime);display:grid;place-items:center;font-size:12.5px;font-weight:800;letter-spacing:.02em;font-family:var(--mono)}
.brand-text{font-size:16px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.nav-menu{display:none;align-items:center;gap:4px;background:rgba(255,255,255,.75);border:1px solid var(--line);border-radius:var(--radius-pill);padding:4px}
.nav-link{padding:8px 16px;border-radius:var(--radius-pill);font-size:14.5px;font-weight:600;color:var(--text-2);white-space:nowrap;transition:background .2s ease,color .2s ease}
.nav-link:hover{color:var(--text);background:rgba(13,15,18,.05)}
.nav-link.is-active{background:var(--ink);color:#fff}
.header-actions{display:flex;align-items:center;gap:10px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--radius-pill);font-weight:700;border:1px solid transparent;cursor:pointer;transition:background .2s ease,color .2s ease,transform .2s ease,border-color .2s ease}
.btn-primary{background:var(--lime);color:var(--ink);padding:12px 24px;font-size:15px}
.btn-primary:hover{background:var(--lime-dim)}
.btn-ghost{background:transparent;border-color:rgba(13,15,18,.85);color:var(--ink);padding:12px 24px;font-size:15px}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-lg{padding:16px 34px;font-size:16.5px}
.btn-light{background:#fff;color:var(--ink);padding:16px 34px;font-size:16.5px}
.btn-light:hover{background:rgba(255,255,255,.88)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.35);color:#fff;padding:12px 24px;font-size:15px}
.btn-outline-light:hover{background:#fff;color:var(--ink);border-color:#fff}
.nav-toggle{display:inline-flex;flex-direction:column;justify-content:center;gap:4px;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:#fff;cursor:pointer;align-items:center}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px}
@media(min-width:1024px){
  .nav-menu{display:flex}
  .nav-toggle{display:none}
}
@media(max-width:520px){
  .brand-text{font-size:14px}
  .header-actions .btn-primary{display:none}
}

/* ---------- mobile drawer ---------- */
.mobile-drawer{position:fixed;inset:0;z-index:90;background:var(--paper);padding:22px 20px 32px;display:flex;flex-direction:column;transform:translateY(-102%);visibility:hidden;transition:transform .35s ease,visibility .35s ease}
.mobile-drawer.is-open{transform:translateY(0);visibility:visible}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:#fff;cursor:pointer;font-size:20px;line-height:1;display:grid;place-items:center}
.drawer-link{display:block;font-size:22px;font-weight:800;letter-spacing:-.01em;padding:18px 0;border-bottom:1px solid var(--line);opacity:0;transform:translateY(8px)}
.mobile-drawer.is-open .drawer-link{animation:drawerIn .3s ease forwards}
.mobile-drawer.is-open .drawer-link:nth-child(2){animation-delay:.05s}
.mobile-drawer.is-open .drawer-link:nth-child(3){animation-delay:.1s}
.mobile-drawer.is-open .drawer-link:nth-child(4){animation-delay:.15s}
@keyframes drawerIn{to{opacity:1;transform:none}}
.drawer-link.is-active{color:var(--ink)}
.drawer-link.is-active::after{content:"当前";margin-left:10px;font-size:12px;font-weight:700;letter-spacing:.04em;color:var(--ink);background:var(--lime);border-radius:6px;padding:3px 8px;vertical-align:middle}
.drawer-cta{margin-top:auto;padding-top:26px}
.drawer-cta .btn{width:100%}

/* ---------- hero ---------- */
.hero{position:relative;background:var(--ink);color:#fff;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-image:url("/assets/images/backpic/back-2.webp");background-size:cover;background-position:center;opacity:.30}
.hero-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:56px 56px;opacity:.5}
.hero-watermark{position:absolute;right:-10px;top:-30px;font-family:var(--mono);font-size:180px;font-weight:900;line-height:1;color:rgba(255,255,255,.045);pointer-events:none;user-select:none}
@media(min-width:1024px){.hero-watermark{font-size:260px;right:20px;top:-40px}}
.hero-inner{position:relative;padding:64px 0 52px}
@media(min-width:1024px){.hero-inner{padding:88px 0 72px}}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;letter-spacing:.12em;color:var(--lime);border:1px solid rgba(194,245,66,.35);border-radius:var(--radius-pill);padding:6px 14px}
.hero-title{font-size:34px;font-weight:900;letter-spacing:-.02em;line-height:1.12;margin:18px 0 14px;max-width:820px}
@media(min-width:768px){.hero-title{font-size:48px}}
@media(min-width:1024px){.hero-title{font-size:64px}}
.hero-lead{font-size:16px;color:rgba(255,255,255,.72);max-width:660px;margin:0}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:46px;padding-top:26px;border-top:1px solid var(--line-dark)}
@media(min-width:768px){.hero-stats{grid-template-columns:repeat(4,minmax(0,1fr))}}
.stat-num{font-family:var(--mono);font-size:26px;font-weight:800;color:var(--lime);line-height:1.2}
.stat-label{font-size:13px;letter-spacing:.03em;color:rgba(255,255,255,.6);margin-top:4px}

/* ---------- subnav ---------- */
.subnav-wrap{position:sticky;top:68px;z-index:50;background:rgba(246,244,239,.94);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
@media(max-width:1023px){.subnav-wrap{top:68px}}
.subnav{display:flex;align-items:center;gap:10px;padding-top:12px;padding-bottom:12px;overflow-x:auto;scrollbar-width:none}
.subnav::-webkit-scrollbar{display:none}
.subnav-label{font-size:12.5px;font-weight:700;letter-spacing:.1em;color:var(--text-3);white-space:nowrap;margin-right:4px}
.subnav-pill{flex:0 0 auto;font-size:14px;font-weight:600;color:var(--text-2);background:#fff;border:1px solid var(--line);border-radius:var(--radius-pill);padding:8px 16px;transition:background .2s ease,color .2s ease,border-color .2s ease}
.subnav-pill:hover{color:var(--ink);border-color:rgba(13,15,18,.35)}
.subnav-pill.is-active{background:var(--ink);border-color:var(--ink);color:#fff}

/* ---------- section ---------- */
.section{padding:56px 0}
@media(min-width:1024px){.section{padding:104px 0}}
.section-dark{background:var(--ink-2);color:#fff}
.sec-head{max-width:780px;margin-bottom:34px}
.sec-num{display:inline-block;font-family:var(--mono);font-size:12.5px;font-weight:800;letter-spacing:.18em;color:var(--text-3)}
.sec-title{font-size:26px;font-weight:800;letter-spacing:-.015em;line-height:1.25;margin:10px 0 12px}
@media(min-width:768px){.sec-title{font-size:34px}}
.sec-sub{font-size:15.5px;color:var(--text-2);margin:0}
.section-dark .sec-title{color:#fff}
.section-dark .sec-sub{color:rgba(255,255,255,.68)}
.section-dark .sec-num{color:rgba(194,245,66,.75)}

.grid-2{display:grid;gap:20px}
@media(min-width:768px){.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}}

.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;display:flex;flex-direction:column;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.panel:hover{transform:translateY(-2px);border-color:rgba(13,15,18,.2);box-shadow:var(--shadow-hover)}
.panel-tag{font-family:var(--mono);font-size:12px;font-weight:800;letter-spacing:.12em;color:var(--text-3);margin-bottom:10px}
.panel-title{font-size:18px;font-weight:700;margin:0 0 8px;letter-spacing:-.01em}
.panel-text{font-size:15px;color:var(--text-2);margin:0}
.panel-img{border-radius:var(--radius-img);overflow:hidden;margin-bottom:18px;background:#EFEDE6}
.panel-img img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .4s ease}
.panel:hover .panel-img img{transform:scale(1.03)}

.points{list-style:none;margin-top:26px;border-top:1px solid var(--line)}
.points li{display:flex;gap:12px;padding:14px 0;border-bottom:1px solid var(--line);font-size:15px;color:var(--text-2)}
.points li::before{content:"";flex:0 0 auto;width:7px;height:7px;border-radius:50%;background:var(--ink);margin-top:10px}

.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;letter-spacing:.04em;border-radius:6px;padding:4px 10px;background:rgba(255,106,43,.13);color:#B84512}
.badge-lime{background:rgba(194,245,66,.30);color:#4B6700}
.badge-ink{background:rgba(13,15,18,.08);color:var(--ink)}

/* ---------- data list / timeline ---------- */
.data-list{list-style:none;border-top:1px solid var(--line)}
.data-list li{display:grid;grid-template-columns:1fr;gap:6px;padding:18px 0;border-bottom:1px solid var(--line)}
@media(min-width:640px){.data-list li{grid-template-columns:200px 1fr;gap:24px;align-items:start}}
.data-key{font-weight:700;font-size:15px;color:var(--text)}
.data-val{font-size:15px;color:var(--text-2)}
.data-val .mono{font-family:var(--mono);color:var(--ink);font-weight:700}

.timeline{list-style:none;display:grid;gap:14px}
.timeline li{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:20px 22px 20px 58px;transition:transform .25s ease,box-shadow .25s ease}
.timeline li:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.timeline li::before{position:absolute;left:22px;top:20px;width:24px;height:24px;border-radius:8px;background:var(--ink);color:var(--lime);font-family:var(--mono);font-size:12px;font-weight:800;display:grid;place-items:center}
.timeline li:nth-child(1)::before{content:"1"}
.timeline li:nth-child(2)::before{content:"2"}
.timeline li:nth-child(3)::before{content:"3"}
.timeline li:nth-child(4)::before{content:"4"}
.timeline-title{font-size:16.5px;font-weight:700;margin:0 0 6px}
.timeline-text{font-size:15px;color:var(--text-2);margin:0}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--line);max-width:900px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;background:none;border:0;text-align:left;padding:20px 0;font-size:16.5px;font-weight:700;cursor:pointer;transition:color .2s ease}
.faq-q:hover{color:var(--ink)}
.faq-plus{position:relative;flex:0 0 auto;width:16px;height:16px}
.faq-plus::before,.faq-plus::after{content:"";position:absolute;background:var(--ink);border-radius:2px;transition:transform .25s ease}
.faq-plus::before{left:0;top:7px;width:16px;height:2px}
.faq-plus::after{left:7px;top:0;width:2px;height:16px}
.faq-item.is-open .faq-plus::after{transform:rotate(90deg)}
.faq-item.is-open .faq-plus::before{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.is-open .faq-a{max-height:400px}
.faq-a p{margin:0;padding:0 40px 22px 0;font-size:15px;color:var(--text-2)}

/* ---------- cta ---------- */
.cta-band{position:relative;overflow:hidden;background:var(--ink);color:#fff;border-radius:24px;padding:56px 24px;text-align:center}
.cta-band .cta-bg{position:absolute;inset:0;background-image:url("/assets/images/backpic/back-3.png");background-size:cover;background-position:center;opacity:.22}
.cta-inner{position:relative}
.cta-title{font-size:26px;font-weight:800;letter-spacing:-.015em;margin:0 0 12px}
@media(min-width:768px){.cta-title{font-size:36px}}
.cta-text{font-size:15.5px;color:rgba(255,255,255,.7);max-width:620px;margin:0 auto 26px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}

.back-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;margin-top:44px;padding-top:28px;border-top:1px solid var(--line)}
.back-note{font-size:14px;color:var(--text-3);margin:0}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.7);margin-top:80px;padding:56px 0 28px}
.footer-grid{display:grid;gap:32px}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:800}
.footer-brand .brand-mark{background:var(--lime);color:var(--ink)}
.footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);margin:14px 0 0;max-width:420px}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin:0 0 14px;letter-spacing:.02em}
.footer-link{display:block;width:fit-content;font-size:14px;color:rgba(255,255,255,.62);padding:5px 0;transition:color .2s ease}
.footer-link:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-info{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.55);margin:0}
.footer-bottom{display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;border-top:1px solid var(--line-dark);margin-top:40px;padding-top:20px;font-size:13px;color:rgba(255,255,255,.45)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .26s ease-out,transform .26s ease-out}
.reveal.is-in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1 !important;transform:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --ink:#0D0F12;
  --ink-2:#1B1F26;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --accent:#C2F542;
  --accent-2:#FF6A2B;
  --line:#E4E0D6;
  --text:#14161A;
  --body:#2C3138;
  --muted:#5A6068;
  --muted-2:#8A9098;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:6px;
  --shadow-hover:0 12px 32px rgba(13,15,18,.08);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}

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

/* ---------- 阅读进度条 ---------- */
.read-progress{
  position:fixed;
  top:0;left:0;
  width:100%;
  height:3px;
  background:rgba(13,15,18,.08);
  z-index:80;
}
.read-progress span{
  display:block;
  height:100%;
  width:0;
  background:var(--accent);
  transition:width .2s linear;
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:70;
  background:rgba(246,244,239,.88);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{
  background:rgba(246,244,239,.96);
  box-shadow:0 6px 22px rgba(13,15,18,.06);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:74px;
  transition:height .25s ease;
}
.site-header.is-scrolled .header-inner{height:62px;}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;height:34px;
  border-radius:10px;
  background:var(--accent);
  color:var(--ink);
  font-weight:800;
  font-size:13px;
  letter-spacing:.02em;
}
.brand-text{
  font-size:16px;
  font-weight:800;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.nav-menu{
  display:none;
  align-items:center;
  gap:4px;
}
@media (min-width:900px){
  .nav-menu{display:flex;}
}
.nav-link{
  display:inline-block;
  padding:8px 16px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  color:var(--muted);
  transition:background .2s ease,color .2s ease;
}
.nav-link:hover{background:rgba(13,15,18,.06);color:var(--text);}
.nav-link.is-active{background:var(--ink);color:#fff;}
.header-actions{display:flex;align-items:center;gap:10px;}
.header-actions .btn-primary{display:none;}
@media (min-width:900px){
  .header-actions .btn-primary{display:inline-flex;}
}
.menu-toggle{
  display:inline-flex;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:44px;height:44px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--surface);
  padding:0 11px;
}
.menu-toggle i{
  display:block;
  height:2px;
  background:var(--ink);
  border-radius:2px;
  transition:transform .2s ease;
}
@media (min-width:900px){
  .menu-toggle{display:none;}
}

/* ---------- 移动抽屉 ---------- */
.mobile-drawer{
  position:fixed;
  inset:0;
  z-index:90;
  background:var(--ink);
  color:#fff;
  display:flex;
  flex-direction:column;
  padding:24px 24px 32px;
  transform:translateY(-100%);
  visibility:hidden;
  transition:transform .3s ease,visibility .3s ease;
}
.mobile-drawer.is-open{transform:translateY(0);visibility:visible;}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:20px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.drawer-head .brand-text{color:#fff;font-size:16px;}
.drawer-close{
  width:40px;height:40px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.22);
  color:#fff;
  font-size:13px;
  font-weight:600;
}
.drawer-nav{
  display:flex;
  flex-direction:column;
  gap:6px;
  margin-top:28px;
}
.drawer-nav a{
  font-size:22px;
  font-weight:800;
  padding:14px 0;
  border-bottom:1px solid rgba(255,255,255,.08);
  color:rgba(255,255,255,.92);
  opacity:0;
  transform:translateY(10px);
  animation:none;
}
.mobile-drawer.is-open .drawer-nav a{
  animation:drawerIn .32s ease forwards;
}
.mobile-drawer.is-open .drawer-nav a:nth-child(1){animation-delay:.03s;}
.mobile-drawer.is-open .drawer-nav a:nth-child(2){animation-delay:.08s;}
.mobile-drawer.is-open .drawer-nav a:nth-child(3){animation-delay:.13s;}
@keyframes drawerIn{to{opacity:1;transform:translateY(0);}}
.drawer-cta{margin-top:auto;justify-content:center;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:13px 26px;
  border-radius:999px;
  font-size:15px;
  font-weight:700;
  line-height:1;
  transition:all .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:var(--ink);}
.btn-primary:hover{filter:brightness(.94);transform:translateX(2px);}
.btn-ghost{
  background:transparent;
  color:var(--ink);
  border:1px solid rgba(13,15,18,.45);
}
.btn-ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink);}
.btn-light-ghost{
  background:transparent;
  color:#fff;
  border:1px solid rgba(255,255,255,.35);
}
.btn-light-ghost:hover{background:#fff;color:var(--ink);border-color:#fff;}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;box-shadow:none;}
.btn .arrow{transition:transform .2s ease;}
.btn:hover .arrow{transform:translateX(4px);}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:var(--radius-sm);
  font-size:12px;
  font-weight:700;
  letter-spacing:.04em;
}
.badge-accent{background:rgba(194,245,66,.30);color:#3D4C10;}
.badge-warm{background:rgba(255,106,43,.14);color:#B23F0B;}
.badge-ink{background:rgba(13,15,18,.07);color:var(--muted);}

/* ---------- 文章页头部 ---------- */
.article-hero{
  position:relative;
  overflow:hidden;
  background:var(--ink);
  color:#fff;
  padding:52px 0 44px;
}
.article-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;
  pointer-events:none;
}
.article-hero .bg-img{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  opacity:.22;
}
.article-hero .container{position:relative;z-index:2;}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.62);
  margin-bottom:22px;
}
.crumbs a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px;}
.crumbs .sep{color:rgba(255,255,255,.32);}
.crumbs .current{color:rgba(255,255,255,.86);max-width:52vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-hero h1{
  font-size:clamp(28px,4.2vw,46px);
  line-height:1.2;
  font-weight:900;
  letter-spacing:-.02em;
  max-width:900px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 18px;
  margin-top:22px;
  font-size:13px;
  color:rgba(255,255,255,.66);
  letter-spacing:.03em;
}
.article-meta .mono{font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;color:rgba(255,255,255,.86);}

/* ---------- 正文布局 ---------- */
.article-main{padding:56px 0 72px;}
@media (min-width:1024px){
  .article-main{padding:72px 0 96px;}
}
.article-layout{
  display:grid;
  gap:44px;
}
@media (min-width:1024px){
  .article-layout{
    grid-template-columns:minmax(0,760px) 232px;
    justify-content:center;
    gap:64px;
    align-items:start;
  }
}
.article-panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:28px 22px;
}
@media (min-width:768px){
  .article-panel{padding:44px 46px;}
}
.lead-line{
  font-size:15px;
  color:var(--muted);
  padding-bottom:22px;
  margin-bottom:28px;
  border-bottom:1px solid var(--line);
}

/* 正文排版 */
.article-body{font-size:16px;color:var(--body);line-height:1.85;}
.article-body p{margin:0 0 20px;}
.article-body h2{
  font-size:24px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--text);
  margin:44px 0 18px;
  padding-top:26px;
  border-top:1px solid var(--line);
}
.article-body h3{
  font-size:19px;
  font-weight:700;
  color:var(--text);
  margin:32px 0 14px;
}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:0;}
.article-body li{
  position:relative;
  padding-left:22px;
  margin-bottom:10px;
}
.article-body ul > li::before{
  content:"";
  position:absolute;
  left:2px;top:12px;
  width:7px;height:7px;
  border-radius:2px;
  background:var(--accent);
}
.article-body ol{counter-reset:item;}
.article-body ol > li{counter-increment:item;}
.article-body ol > li::before{
  content:counter(item);
  position:absolute;
  left:0;top:4px;
  font-family:"SFMono-Regular",Consolas,Menlo,monospace;
  font-size:13px;
  font-weight:700;
  color:var(--muted-2);
}
.article-body blockquote{
  margin:26px 0;
  padding:16px 20px;
  border-left:4px solid var(--accent);
  background:#FAF9F4;
  border-radius:0 var(--radius-md) var(--radius-md) 0;
  color:var(--muted);
}
.article-body img{
  width:100%;
  border-radius:var(--radius-md);
  margin:26px 0;
}
.article-body a{color:#1E6F3C;text-decoration:underline;text-underline-offset:4px;}
.article-body a:hover{color:var(--ink);background:rgba(194,245,66,.35);}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:26px 0;
  font-size:14px;
}
.article-body th,.article-body td{
  border:1px solid var(--line);
  padding:10px 14px;
  text-align:left;
}
.article-body th{background:#FAF9F4;font-weight:700;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0;}

/* 空态 */
.empty-state{
  text-align:center;
  padding:56px 20px 60px;
}
.empty-state .empty-num{
  font-family:"SFMono-Regular",Consolas,Menlo,monospace;
  font-size:52px;
  font-weight:800;
  color:rgba(13,15,18,.10);
  line-height:1;
}
.empty-state h2{
  margin:16px 0 10px;
  font-size:22px;
  font-weight:800;
}
.empty-state p{color:var(--muted);margin-bottom:26px;}

/* 侧栏目录 */
.toc{
  display:none;
}
@media (min-width:1024px){
  .toc{
    display:block;
    position:sticky;
    top:98px;
  }
}
.toc-inner{
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  background:var(--surface);
  padding:20px;
}
.toc-title{
  font-size:12px;
  font-weight:800;
  letter-spacing:.12em;
  color:var(--muted-2);
  margin-bottom:14px;
}
.toc-list a{
  display:block;
  padding:7px 10px;
  font-size:13.5px;
  color:var(--muted);
  border-radius:8px;
  border-left:2px solid transparent;
  transition:all .18s ease;
  line-height:1.5;
}
.toc-list a:hover{color:var(--text);background:rgba(13,15,18,.045);}
.toc-list a.is-current{color:var(--text);font-weight:700;border-left-color:var(--accent);background:rgba(194,245,66,.16);}
.toc-list a.depth-3{padding-left:22px;font-size:13px;}

/* ---------- 相关推荐 ---------- */
.related{padding:64px 0 0;}
.related-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:26px;
}
.related-head h2{
  font-size:clamp(22px,2.6vw,30px);
  font-weight:800;
  letter-spacing:-.01em;
}
.related-head p{font-size:14px;color:var(--muted);margin-top:6px;}
.card-grid{
  display:grid;
  gap:20px;
  grid-template-columns:1fr;
}
@media (min-width:640px){
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (min-width:1024px){
  .card-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
}
.card{
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(13,15,18,.20);
}
.card-media{
  overflow:hidden;
  aspect-ratio:4/3;
  background:#EFEDE6;
}
.card-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .35s ease;
}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{
  padding:20px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.card-body h3{
  font-size:17px;
  font-weight:700;
  line-height:1.5;
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-body p{
  font-size:14px;
  color:var(--muted);
  line-height:1.7;
  margin-bottom:18px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  font-size:12px;
  color:var(--muted-2);
  letter-spacing:.03em;
}

/* ---------- 深色 CTA 带 ---------- */
.cta-band{
  margin-top:72px;
  background:var(--ink);
  color:#fff;
  border-radius:var(--radius-lg);
  padding:44px 24px;
  text-align:center;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(circle at 82% 18%,rgba(194,245,66,.20),transparent 46%);
  pointer-events:none;
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{
  font-size:clamp(22px,3vw,32px);
  font-weight:900;
  letter-spacing:-.01em;
  margin-bottom:12px;
}
.cta-band p{color:rgba(255,255,255,.68);font-size:15px;max-width:560px;margin:0 auto 26px;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;
  background:var(--ink);
  color:rgba(255,255,255,.72);
  padding:56px 0 28px;
}
.footer-grid{
  display:grid;
  gap:34px;
  grid-template-columns:1fr;
}
@media (min-width:640px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (min-width:1024px){
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;}
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
  color:#fff;
}
.footer-brand strong{font-size:16px;font-weight:800;letter-spacing:-.01em;}
.footer-about{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);}
.footer-title{
  font-size:13px;
  font-weight:800;
  letter-spacing:.10em;
  color:rgba(255,255,255,.9);
  margin-bottom:16px;
}
.footer-link{
  display:block;
  font-size:14px;
  color:rgba(255,255,255,.64);
  padding:5px 0;
  transition:color .2s ease,text-decoration-color .2s ease;
  text-decoration:underline;
  text-decoration-color:transparent;
  text-underline-offset:5px;
}
.footer-link:hover{color:#fff;text-decoration-color:var(--accent);}
.footer-info{font-size:14px;line-height:1.8;color:rgba(255,255,255,.58);}
.footer-bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.10);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  font-size:13px;
  color:rgba(255,255,255,.48);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .26s ease-out,transform .26s ease-out;}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
  .card:hover{transform:none;}
  .card:hover .card-media img{transform:none;}
}

/* roulang page: category2 */
:root{
  --ink:#0D0F12;
  --ink-2:#1B1F26;
  --text:#14161A;
  --text-2:#5A6068;
  --text-3:#8A9098;
  --paper:#F6F4EF;
  --paper-2:#EFEBE1;
  --card:#FFFFFF;
  --line:#E4E0D6;
  --lime:#C2F542;
  --orange:#FF6A2B;
  --r-card:16px;
  --r-img:12px;
  --r-pill:999px;
  --shadow:0 12px 32px rgba(13,15,18,.08);
  --shadow-sm:0 4px 16px rgba(13,15,18,.06);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
html body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:var(--paper);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px;}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;font-variant-numeric:tabular-nums;}

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

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,239,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{background:rgba(246,244,239,.97);box-shadow:0 6px 24px rgba(13,15,18,.07);}
.header-inner{display:flex;align-items:center;gap:14px;height:74px;transition:height .25s ease;}
.site-header.is-scrolled .header-inner{height:62px;}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;background:var(--ink);color:var(--lime);
  display:grid;place-items:center;font-size:13px;font-weight:800;letter-spacing:.02em;
}
.brand-text{font-size:16.5px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;}
.brand-sub{display:none;}

.nav-menu{display:none;}
@media (min-width:1024px){
  .nav-menu{
    display:flex;align-items:center;gap:4px;margin-left:14px;padding:4px;
    border:1px solid var(--line);border-radius:var(--r-pill);background:#fff;
  }
}
.nav-link{
  padding:8px 16px;border-radius:var(--r-pill);font-size:14.5px;font-weight:600;
  color:var(--text-2);transition:background .2s ease,color .2s ease;
}
.nav-link:hover{color:var(--text);background:rgba(13,15,18,.05);}
.nav-link.is-active{background:var(--ink);color:#fff;}

.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
.header-cta{display:none;}
@media (min-width:768px){.header-cta{display:inline-flex;}}

.menu-toggle{
  display:grid;place-items:center;width:44px;height:44px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;transition:border-color .2s ease,box-shadow .2s ease;
}
.menu-toggle:hover{border-color:rgba(13,15,18,.35);box-shadow:var(--shadow-sm);}
@media (min-width:1024px){.menu-toggle{display:none;}}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative;}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);padding:12px 22px;font-size:14.5px;font-weight:700;
  border:1px solid transparent;transition:background .2s ease,color .2s ease,filter .2s ease,border-color .2s ease,transform .2s ease;
}
.btn .arrow{transition:transform .2s ease;}
.btn:hover .arrow{transform:translateX(4px);}
.btn-primary{background:var(--lime);color:var(--ink);}
.btn-primary:hover{filter:brightness(.94);}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent;}
.btn-ghost:hover{background:var(--ink);color:var(--paper);}
.btn-ghost:hover .arrow{transform:translateX(4px);}
.btn-inverse{background:#fff;color:var(--ink);border-color:rgba(255,255,255,.55);}
.btn-inverse:hover{background:transparent;color:#fff;border-color:#fff;}
.btn-outline-light{border-color:rgba(255,255,255,.45);color:#fff;}
.btn-outline-light:hover{background:#fff;color:var(--ink);}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none;}

/* ---------- 移动端抽屉 ---------- */
.mobile-drawer{
  position:fixed;inset:0;z-index:90;background:var(--paper);
  transform:translateX(100%);transition:transform .3s ease;
  display:flex;flex-direction:column;padding:22px 22px 32px;overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-top{display:flex;align-items:center;gap:10px;padding-right:56px;}
.drawer-close{
  position:absolute;top:20px;right:20px;width:44px;height:44px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;display:grid;place-items:center;font-size:18px;
}
.drawer-nav{margin-top:34px;display:flex;flex-direction:column;}
.drawer-link{
  font-size:23px;font-weight:800;padding:16px 0;border-bottom:1px solid var(--line);
  opacity:0;transform:translateY(8px);
}
.drawer-link.is-active{color:var(--ink);}
.drawer-link.is-active::after{content:"当前";margin-left:10px;font-size:12px;font-weight:700;color:var(--orange);letter-spacing:.06em;}
.mobile-drawer.is-open .drawer-link{animation:drawerIn .3s ease forwards;animation-delay:calc(var(--i,0) * 30ms);}
@keyframes drawerIn{to{opacity:1;transform:none;}}
.drawer-cta{margin-top:30px;width:100%;padding:15px 22px;}
.drawer-note{margin-top:22px;font-size:13.5px;color:var(--text-3);}

/* ---------- Hero / 横幅 ---------- */
.banner{position:relative;background:var(--ink);color:#fff;overflow:hidden;}
.banner-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.34;
}
.banner-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(13,15,18,.55) 0%,rgba(13,15,18,.86) 100%);
}
.banner-inner{position:relative;padding:56px 0 52px;}
@media (min-width:1024px){.banner-inner{padding:78px 0 68px;}}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;font-size:12.5px;letter-spacing:.04em;color:rgba(255,255,255,.6);}
.breadcrumb a{transition:color .2s ease;}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .sep{color:rgba(255,255,255,.35);}
.breadcrumb .current{color:rgba(255,255,255,.85);}
.banner-title{
  font-size:clamp(30px,4.6vw,52px);font-weight:900;line-height:1.14;letter-spacing:-.02em;
  margin:18px 0 14px;max-width:820px;
}
.banner-title .accent{color:var(--lime);}
.banner-sub{font-size:15.5px;color:rgba(255,255,255,.76);max-width:640px;}
.banner-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.banner-stats{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;margin-top:36px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-card);overflow:hidden;
}
@media (min-width:768px){.banner-stats{grid-template-columns:repeat(4,minmax(0,1fr));}}
.stat{background:rgba(13,15,18,.6);padding:18px 20px;}
.stat-num{font-size:23px;font-weight:800;color:var(--lime);letter-spacing:-.01em;}
.stat-label{font-size:12.5px;letter-spacing:.05em;color:rgba(255,255,255,.58);margin-top:2px;}

/* ---------- 板块通用 ---------- */
.section{padding:60px 0;}
@media (min-width:1024px){.section{padding:96px 0;}}
.section-alt{background:var(--paper-2);}
.section-head{max-width:740px;margin-bottom:34px;}
.eyebrow{font-size:12.5px;font-weight:800;letter-spacing:.18em;color:var(--text-3);text-transform:uppercase;}
.section-title{font-size:clamp(24px,3vw,34px);font-weight:800;letter-spacing:-.02em;line-height:1.22;margin:12px 0 12px;}
.section-desc{font-size:15.5px;color:var(--text-2);}
.divider{height:1px;background:var(--line);border:0;margin:0;}

/* ---------- 左右分栏 ---------- */
.layout-split{display:grid;gap:28px;align-items:start;}
@media (min-width:1024px){.layout-split{grid-template-columns:240px minmax(0,1fr);gap:56px;}}

.side-index{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:20px;
}
@media (min-width:1024px){.side-index{position:sticky;top:96px;}}
.index-title{font-size:12.5px;font-weight:800;letter-spacing:.16em;color:var(--text-3);margin-bottom:12px;}
.index-list{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;}
@media (min-width:1024px){.index-list{flex-direction:column;overflow:visible;padding-bottom:0;}}
.index-link{
  display:block;white-space:nowrap;font-size:14.5px;font-weight:600;color:var(--text-2);
  padding:9px 14px;border:1px solid var(--line);border-radius:var(--r-pill);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
@media (min-width:1024px){
  .index-link{border:0;border-bottom:1px solid var(--line);border-radius:0;padding:10px 0;}
  .index-list .index-link:last-child{border-bottom:0;}
}
.index-link:hover{color:var(--text);border-color:rgba(13,15,18,.3);}
@media (min-width:1024px){.index-link:hover{background:transparent;border-bottom-color:var(--ink);}}
.index-extra{margin-top:20px;padding-top:16px;border-top:1px solid var(--line);display:none;}
@media (min-width:1024px){.index-extra{display:block;}}
.index-extra a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  font-size:14px;font-weight:600;color:var(--text-2);padding:8px 0;
}
.index-extra a:hover{color:var(--text);}
.index-note{font-size:12.5px;color:var(--text-3);margin-top:16px;line-height:1.7;}

/* ---------- 条目流 ---------- */
.entry-list{display:flex;flex-direction:column;}
.entry{
  display:grid;gap:18px;padding:28px 0;border-top:1px solid var(--line);
}
.entry:first-child{border-top:0;padding-top:0;}
@media (min-width:768px){
  .entry{grid-template-columns:minmax(0,1fr) 200px;align-items:center;gap:28px;}
  .entry-flip{grid-template-columns:200px minmax(0,1fr);}
  .entry-flip .entry-thumb{order:-1;}
}
.entry-num{font-size:12.5px;font-weight:800;letter-spacing:.14em;color:var(--orange);}
.entry-title{font-size:19.5px;font-weight:800;letter-spacing:-.01em;margin:8px 0 8px;}
.entry-text{font-size:15px;color:var(--text-2);max-width:640px;}
.entry-meta{margin-top:12px;display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12.5px;color:var(--text-3);}
.badge{
  display:inline-flex;align-items:center;padding:3px 10px;border-radius:6px;
  font-size:12px;font-weight:700;letter-spacing:.03em;
}
.badge-lime{background:rgba(194,245,66,.3);color:#3E4E08;}
.badge-orange{background:rgba(255,106,43,.14);color:#B23F0D;}
.badge-ink{background:var(--ink);color:#fff;}
.entry-thumb{
  border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:4/3;background:var(--paper-2);
}
.entry-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.entry:hover .entry-thumb img{transform:scale(1.03);}
.entry:hover .entry-title{color:var(--ink);}

/* ---------- 档位对照 ---------- */
.level-table{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;}
.level-head{display:none;}
@media (min-width:860px){
  .level-head{
    display:grid;grid-template-columns:150px minmax(0,1fr) minmax(0,1.2fr) 150px;gap:20px;
    padding:16px 24px;background:var(--paper-2);font-size:12.5px;font-weight:800;
    letter-spacing:.1em;color:var(--text-3);
  }
}
.level-row{
  display:grid;gap:10px;padding:22px 24px;border-top:1px solid var(--line);
  transition:background .2s ease;
}
.level-row:first-of-type{border-top:0;}
@media (min-width:860px){
  .level-row{grid-template-columns:150px minmax(0,1fr) minmax(0,1.2fr) 150px;gap:20px;align-items:center;}
}
.level-row:hover{background:rgba(194,245,66,.09);}
.level-name{font-size:16px;font-weight:800;display:flex;align-items:center;gap:8px;}
.level-gate,.level-prize{font-size:14.5px;color:var(--text-2);}
.level-cycle{font-size:13.5px;color:var(--text-3);}
@media (min-width:860px){.level-cycle{text-align:right;}}
.level-label{font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--text-3);}
@media (min-width:860px){.level-label{display:none;}}

/* ---------- 流程 ---------- */
.flow{display:grid;gap:22px;}
@media (min-width:640px){.flow{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.flow{grid-template-columns:repeat(4,minmax(0,1fr));}}
.flow-step{border-top:3px solid var(--line);padding-top:18px;}
.flow-step.is-current{border-top-color:var(--orange);}
.flow-num{font-size:13px;font-weight:800;letter-spacing:.12em;color:var(--text-3);}
.flow-title{font-size:17px;font-weight:800;margin:8px 0 8px;}
.flow-text{font-size:14.5px;color:var(--text-2);}

/* ---------- 场景图文 ---------- */
.scene{display:grid;gap:26px;align-items:center;}
@media (min-width:768px){.scene{grid-template-columns:repeat(2,minmax(0,1fr));gap:44px;}}
.scene-img{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);aspect-ratio:4/3;background:var(--paper-2);}
.scene-img img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.scene:hover .scene-img img{transform:scale(1.03);}
.scene-title{font-size:22px;font-weight:800;letter-spacing:-.01em;margin-bottom:12px;}
.scene-text{font-size:15px;color:var(--text-2);}
.point-list{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
.point-list li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2);}
.point-list li::before{
  content:"";flex:none;width:7px;height:7px;margin-top:9px;border-radius:2px;background:var(--lime);
}

/* ---------- 卡组 ---------- */
.card-grid{display:grid;gap:20px;}
@media (min-width:640px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.card-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:rgba(13,15,18,.2);}
.card-title{font-size:17px;font-weight:800;margin-bottom:8px;}
.card-text{font-size:14.5px;color:var(--text-2);}
.card-num{font-size:13px;font-weight:800;letter-spacing:.12em;color:var(--text-3);}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:16.5px;font-weight:700;text-align:left;line-height:1.6;
}
.faq-q:hover{color:var(--ink);}
.faq-icon{
  flex:none;width:26px;height:26px;display:grid;place-items:center;font-size:20px;line-height:1;
  color:var(--text-2);transition:transform .25s ease,color .25s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--ink);}
.faq-panel{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-panel p{font-size:15px;color:var(--text-2);padding-bottom:20px;max-width:780px;}

/* ---------- 提示带 / CTA ---------- */
.notice-band{
  background:var(--card);border:1px solid var(--line);border-left:4px solid var(--lime);
  border-radius:var(--r-img);padding:20px 22px;font-size:14.5px;color:var(--text-2);
}
.notice-band strong{color:var(--text);}
.cta-band{background:var(--ink);color:#fff;border-radius:24px;padding:44px 26px;text-align:center;}
@media (min-width:768px){.cta-band{padding:70px 56px;}}
.cta-band h2{font-size:clamp(24px,3.2vw,38px);font-weight:900;letter-spacing:-.02em;line-height:1.2;}
.cta-band p{margin-top:14px;font-size:15.5px;color:rgba(255,255,255,.7);}
.cta-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:12px;justify-content:center;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.7);margin-top:64px;padding:56px 0 28px;}
@media (min-width:1024px){.site-footer{margin-top:96px;padding:72px 0 32px;}}
.footer-grid{display:grid;gap:32px;}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:44px;}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:800;}
.footer-brand .brand-mark{background:rgba(255,255,255,.08);}
.footer-about{font-size:14px;line-height:1.85;margin-top:16px;max-width:380px;color:rgba(255,255,255,.62);}
.footer-title{font-size:13.5px;font-weight:800;letter-spacing:.1em;color:#fff;margin-bottom:14px;}
.footer-link{display:block;font-size:14px;padding:5px 0;color:rgba(255,255,255,.66);transition:color .2s ease;}
.footer-link:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-info{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:340px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:8px 16px;justify-content:space-between;align-items:center;
  border-top:1px solid rgba(255,255,255,.1);margin-top:44px;padding-top:20px;
  font-size:13px;color:rgba(255,255,255,.48);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .26s ease-out,transform .26s ease-out;}
.reveal.is-visible{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
}

@media (max-width:520px){
  .brand-text{font-size:15px;}
  .banner-actions .btn{width:100%;}
  .cta-actions .btn{width:100%;}
}