/* roulang page: index */
:root{
  --v-black:#0E1512;
  --v-lime:#C6F03C;
  --v-flame:#FF4D1C;
  --v-paper:#F5F5EF;
  --v-white:#FFFFFF;
  --v-ink:#1A1D1B;
  --v-muted:#6B736E;
  --v-line:#E3E4DA;
  --v-line-dark:rgba(255,255,255,.12);
  --r-sm:8px;
  --r-md:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,21,18,.05);
  --sh-2:0 18px 44px -22px rgba(14,21,18,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:240ms;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:'HarmonyOS Sans SC','PingFang SC','Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;
  background:var(--v-paper);
  color:var(--v-ink);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;background:#E9EAE2}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{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(--v-lime);outline-offset:2px;border-radius:4px}
::selection{background:var(--v-lime);color:var(--v-black)}
.num{font-family:'Barlow Condensed','Oswald',system-ui,sans-serif;font-variant-numeric:tabular-nums;letter-spacing:.02em}

.container-v{max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container-v{padding:0 32px}}
@media(min-width:1024px){.container-v{padding:0 48px}}

.section{padding:56px 0}
@media(min-width:768px){.section{padding:72px 0}}
@media(min-width:1024px){.section{padding:104px 0}}
.section-dark{background:var(--v-black);color:var(--v-paper)}
.section-tight{padding-bottom:0}

/* 脊标与标题 */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.12em;text-transform:uppercase;
  font-weight:600;color:var(--v-muted);
}
.eyebrow .num{font-size:14px;color:var(--v-black)}
.section-dark .eyebrow{color:rgba(245,245,239,.68)}
.section-dark .eyebrow .num{color:var(--v-lime)}
.h2{font-size:clamp(26px,3.2vw,38px);font-weight:700;letter-spacing:-.015em;line-height:1.25;margin-top:14px}
.lead{font-size:16px;color:var(--v-muted);margin-top:14px;max-width:640px}
.section-dark .lead{color:rgba(245,245,239,.68)}

/* Logo */
.logo-mark{
  width:34px;height:34px;display:grid;place-items:center;
  background:var(--v-black);color:var(--v-lime);
  font-family:'Barlow Condensed',system-ui,sans-serif;
  font-weight:700;font-size:20px;line-height:1;
  border-radius:10px;clip-path:polygon(0 0,100% 0,84% 100%,0 100%);
  flex:none;
}
.section-dark .logo-mark,.footer .logo-mark{background:var(--v-lime);color:var(--v-black)}
.logo-text{font-size:18px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}

/* 倒计时条 */
.countdown-bar{background:var(--v-black);color:var(--v-paper);border-bottom:1px solid var(--v-line-dark)}
.cd-wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:50px}
.cd-left{display:flex;align-items:center;gap:12px;min-width:0}
.cd-tag{
  display:inline-flex;align-items:center;gap:6px;
  background:rgba(198,240,60,.12);color:var(--v-lime);
  border:1px solid rgba(198,240,60,.35);
  font-size:12px;font-weight:600;letter-spacing:.06em;
  padding:4px 12px;border-radius:var(--r-pill);white-space:nowrap;
}
.cd-text{font-size:13px;color:rgba(245,245,239,.68);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cd-right{display:flex;align-items:center;gap:8px}
.cd-cell{display:flex;align-items:baseline;gap:3px;padding:0 4px}
.cd-num{font-size:19px;font-weight:700;color:var(--v-lime);min-width:28px;text-align:center;transition:opacity 120ms linear}
.cd-num.tick{opacity:.35}
.cd-unit{font-size:11px;color:rgba(245,245,239,.55)}
.cd-link{
  font-size:13px;color:var(--v-paper);border-bottom:1px solid rgba(198,240,60,.6);
  padding-bottom:1px;white-space:nowrap;transition:color var(--dur) var(--ease);
}
.cd-link:hover{color:var(--v-lime)}
@media(max-width:900px){
  .cd-text{display:none}
  .cd-wrap{min-height:44px;gap:10px}
  .cd-num{font-size:17px;min-width:24px}
}
@media(max-width:560px){
  .cd-wrap{flex-wrap:wrap;padding:8px 0;justify-content:center}
  .cd-cell{padding:0 2px}
  .cd-num{font-size:16px;min-width:22px}
}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(245,245,239,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header.scrolled{background:rgba(255,255,255,.94);border-bottom-color:var(--v-line);box-shadow:var(--sh-1)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px;transition:height 200ms var(--ease)}
.site-header.scrolled .nav-inner{height:68px}
.nav-menu{display:none;align-items:center;gap:34px}
.nav-link{position:relative;font-size:15px;font-weight:500;padding:6px 2px;white-space:nowrap}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--v-lime);
  transform:scaleX(0);transform-origin:center;transition:transform 180ms var(--ease);
}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-cta{height:46px;padding:0 22px;font-size:14.5px}
.nav-toggle{
  width:44px;height:44px;display:grid;place-items:center;
  border:1px solid var(--v-line);border-radius:var(--r-sm);background:var(--v-white);
  font-size:18px;transition:border-color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--v-lime)}
@media(min-width:1024px){
  .nav-menu{display:flex}
  .nav-toggle{display:none}
}

/* 抽屉 */
.drawer{
  position:fixed;inset:0;z-index:80;background:var(--v-black);color:var(--v-paper);
  display:flex;flex-direction:column;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity 220ms var(--ease),transform 220ms var(--ease),visibility 220ms;
}
.drawer.open{opacity:1;visibility:visible;transform:none}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--v-line-dark)}
.drawer-close{width:44px;height:44px;display:grid;place-items:center;border:1px solid var(--v-line-dark);border-radius:var(--r-sm);font-size:18px;color:var(--v-paper)}
.drawer-links{display:flex;flex-direction:column;padding:24px 20px;gap:4px;flex:1;overflow-y:auto}
.drawer-links a{font-size:20px;font-weight:600;padding:16px 0;border-bottom:1px solid var(--v-line-dark)}
.drawer-links a.active{color:var(--v-lime)}
.drawer-bottom{padding:16px 20px 26px}
.drawer-bottom .btn{width:100%;justify-content:center}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:50px;padding:0 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:filter var(--dur) var(--ease),transform var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.btn .arr{transition:transform var(--dur) var(--ease)}
.btn:hover .arr{transform:translateX(4px)}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--v-lime);color:var(--v-black)}
.btn-primary:hover{filter:brightness(1.07)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.3);color:var(--v-paper)}
.btn-ghost:hover{border-color:var(--v-lime);color:var(--v-lime)}
.btn-dark{background:var(--v-black);color:var(--v-paper)}
.btn-dark:hover{background:#17211c}
.btn-outline{background:transparent;border-color:var(--v-line);color:var(--v-ink)}
.btn-outline:hover{border-color:var(--v-black)}
.btn-sm{height:42px;padding:0 20px;font-size:14px}
.btn:disabled{opacity:.45;cursor:not-allowed}
.text-link{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;border-bottom:1px solid var(--v-black);padding-bottom:2px;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.text-link:hover{color:#4c5a3a;border-color:var(--v-lime)}
.text-link .arr{transition:transform var(--dur) var(--ease)}
.text-link:hover .arr{transform:translateX(4px)}

/* Hero */
.hero{
  position:relative;background:var(--v-black);color:var(--v-paper);
  padding:64px 0 92px;overflow:hidden;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 40px),0 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 1px,transparent 1px 15px);
  opacity:.9;
}
.hero::after{
  content:"";position:absolute;right:-160px;top:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(198,240,60,.16),transparent 68%);pointer-events:none;
}
.hero-inner{position:relative;z-index:2}
.hero h1{
  font-size:clamp(32px,5.2vw,68px);font-weight:800;letter-spacing:-.02em;line-height:1.06;margin-top:22px;
}
.hero h1 .hl{color:var(--v-lime)}
.hero-sub{font-size:clamp(15px,1.5vw,18px);color:rgba(245,245,239,.78);margin-top:20px;max-width:560px;line-height:1.8}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-note{font-size:13px;color:rgba(245,245,239,.6);margin-top:20px;letter-spacing:.02em}
.hero-media{position:relative;margin-top:44px}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-md);border:1px solid var(--v-line-dark)}
.hero-stat{
  position:absolute;left:-6px;bottom:-26px;width:min(300px,88%);
  background:#FFFFFF;color:var(--v-ink);border-radius:var(--r-md);
  box-shadow:var(--sh-2);padding:16px 18px;
  display:grid;grid-template-columns:repeat(3,1fr);gap:10px;
}
.hero-stat .st b{display:block;font-family:'Barlow Condensed',system-ui,sans-serif;font-size:24px;font-weight:700;line-height:1.1;font-variant-numeric:tabular-nums}
.hero-stat .st span{font-size:11.5px;color:var(--v-muted);letter-spacing:.04em}
@media(min-width:1024px){
  .hero{padding:84px 0 118px}
  .hero-media{margin-top:0}
  .hero-stat{left:-30px;bottom:24px}
}

/* 数据条 */
.data-strip{background:#111a16;border-top:1px solid var(--v-line-dark);border-bottom:1px solid var(--v-line-dark);color:var(--v-paper)}
.data-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--v-line-dark)}
.data-cell{background:#111a16;padding:22px 16px;text-align:center}
.data-cell b{display:block;font-family:'Barlow Condensed',system-ui,sans-serif;font-size:clamp(26px,3vw,36px);font-weight:700;color:var(--v-lime);line-height:1.1;font-variant-numeric:tabular-nums}
.data-cell span{font-size:12.5px;letter-spacing:.06em;color:rgba(245,245,239,.68)}
@media(min-width:768px){.data-grid{grid-template-columns:repeat(4,1fr)}}

/* 卖点卡 */
.feature-grid{display:grid;gap:18px;margin-top:44px}
.f-card{
  position:relative;background:var(--v-white);border:1px solid var(--v-line);border-radius:var(--r-md);
  padding:26px;box-shadow:var(--sh-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
  display:flex;flex-direction:column;
}
.f-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--v-lime)}
.f-num{font-family:'Barlow Condensed',system-ui,sans-serif;font-size:14px;letter-spacing:.14em;color:var(--v-muted)}
.f-card h3{font-size:20px;font-weight:600;margin-top:14px;letter-spacing:-.01em}
.f-card p{font-size:15px;color:var(--v-muted);margin-top:10px}
.f-arrow{margin-top:auto;padding-top:20px;font-size:15px;color:var(--v-black);transition:transform var(--dur) var(--ease)}
.f-card:hover .f-arrow{transform:translateX(5px);color:#4f6a1f}
.f-wide{display:grid;gap:0;padding:0;overflow:hidden}
.f-wide .f-wide-body{padding:28px}
.f-wide img{width:100%;height:100%;min-height:220px;object-fit:cover}
.f-narrow{background:var(--v-black);color:var(--v-paper);border-color:var(--v-black)}
.f-narrow h3{color:var(--v-paper)}
.f-narrow p{color:rgba(245,245,239,.68)}
.f-narrow .f-num{color:var(--v-lime)}
.f-narrow:hover{border-color:var(--v-lime)}
@media(min-width:768px){
  .feature-grid{grid-template-columns:repeat(12,1fr)}
  .f-wide{grid-column:span 12;grid-template-columns:7fr 5fr;align-items:stretch}
  .f-a{grid-column:span 5}
  .f-b{grid-column:span 7}
  .f-narrow{grid-column:span 12;flex-direction:row;align-items:center;gap:20px;padding:22px 28px}
  .f-narrow .f-num{padding-right:20px;border-right:1px solid var(--v-line-dark)}
  .f-narrow h3{margin-top:0}
  .f-narrow p{margin-top:0;margin-left:auto;max-width:52%;text-align:right}
  .f-narrow .f-arrow{padding-top:0;margin-left:8px;color:var(--v-lime)}
}

/* 图墙 */
.wall{display:grid;grid-template-columns:repeat(12,1fr);gap:14px;grid-auto-rows:104px;grid-auto-flow:dense;margin-top:44px}
.wall-item{position:relative;overflow:hidden;border-radius:var(--r-md);grid-column:span 12;grid-row:span 2}
.wall-item img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease),filter 400ms var(--ease)}
.wall-item::after{content:"";position:absolute;inset:0;background:rgba(14,21,18,.18);transition:background 400ms var(--ease)}
.wall-item:hover::after{background:rgba(14,21,18,.04)}
.wall-item:hover img{transform:scale(1.04)}
.wall-badge{
  position:absolute;z-index:3;left:14px;top:14px;
  background:var(--v-lime);color:var(--v-black);font-size:11.5px;font-weight:600;
  letter-spacing:.06em;padding:5px 12px;border-radius:var(--r-pill);
}
@media(min-width:768px){
  .wall{grid-auto-rows:118px;gap:16px}
  .wall-item:nth-child(1){grid-column:span 5;grid-row:span 3}
  .wall-item:nth-child(2){grid-column:span 4;grid-row:span 2}
  .wall-item:nth-child(3){grid-column:span 3;grid-row:span 3}
  .wall-item:nth-child(4){grid-column:span 4;grid-row:span 2}
  .wall-item:nth-child(5){grid-column:span 3;grid-row:span 2}
}

/* 口碑 */
.voice-grid{display:grid;gap:18px;margin-top:44px}
.voice-main{background:var(--v-black);color:var(--v-paper);border-radius:var(--r-md);padding:32px}
.voice-main blockquote{font-size:clamp(18px,2.2vw,24px);line-height:1.6;font-weight:600;letter-spacing:-.01em}
.voice-who{margin-top:22px;font-size:13.5px;color:rgba(245,245,239,.68)}
.voice-side{display:grid;gap:18px}
.voice-card{background:var(--v-white);border:1px solid var(--v-line);border-radius:var(--r-md);padding:24px;box-shadow:var(--sh-1)}
.voice-card p{font-size:15px;color:#3c423e}
.voice-card span{display:block;margin-top:14px;font-size:13px;color:var(--v-muted)}
@media(min-width:900px){.voice-grid{grid-template-columns:7fr 5fr}}

/* 表单 */
.signup{
  background:var(--v-black);color:var(--v-paper);padding:72px 0 0;
  clip-path:polygon(0 44px,100% 0,100% 100%,0 100%);
}
.signup-inner{padding-bottom:88px}
.field-label{display:block;font-size:13px;letter-spacing:.04em;color:rgba(245,245,239,.6);margin-bottom:8px}
.field-input{
  width:100%;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.16);
  border-radius:10px;padding:12px 14px;color:var(--v-paper);font-size:15px;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease);
}
.field-input::placeholder{color:rgba(245,245,239,.4)}
.field-input:focus{outline:none;border-color:var(--v-lime);box-shadow:0 0 0 2px rgba(198,240,60,.22);background:rgba(255,255,255,.07)}
.field-input.error{border-color:var(--v-flame);box-shadow:0 0 0 2px rgba(255,77,28,.18)}
.form-note{font-size:12px;color:rgba(245,245,239,.5);margin-top:14px}
.form-ok{
  display:none;margin-top:16px;font-size:14px;color:var(--v-lime);
  border:1px solid rgba(198,240,60,.4);background:rgba(198,240,60,.08);
  border-radius:10px;padding:12px 14px;
}
.form-ok.show{display:block}

/* FAQ */
.faq-grid{display:grid;gap:32px;margin-top:44px}
.faq-list{border-top:1px solid var(--v-line)}
.faq-item{border-bottom:1px solid var(--v-line);transition:background var(--dur) var(--ease)}
.faq-item.open{background:#FAFAF6}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  text-align:left;padding:20px 16px;font-size:16.5px;font-weight:600;letter-spacing:-.005em;
}
.faq-plus{
  flex:none;width:30px;height:30px;display:grid;place-items:center;
  border:1px solid var(--v-line);border-radius:50%;font-size:12px;color:var(--v-black);
  transition:transform 300ms var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.faq-item.open .faq-plus{transform:rotate(45deg);color:var(--v-flame);border-color:var(--v-flame)}
.faq-item.open .faq-q{color:var(--v-black)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows 300ms var(--ease)}
.faq-item.open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a-inner p{padding:0 16px 22px;font-size:15.5px;line-height:1.8;color:var(--v-muted)}
@media(min-width:1024px){
  .faq-grid{grid-template-columns:4fr 8fr;gap:48px}
  .faq-aside{position:sticky;top:110px;align-self:start}
}

/* 最新信息 */
.filter-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:22px}
.chip{
  display:inline-flex;align-items:center;font-size:13px;font-weight:500;
  padding:7px 16px;border-radius:var(--r-pill);border:1px solid var(--v-line);
  color:var(--v-muted);background:var(--v-white);transition:all var(--dur) var(--ease);
}
.chip:hover{border-color:var(--v-black);color:var(--v-black)}
.chip.active{background:var(--v-lime);border-color:var(--v-lime);color:var(--v-black);font-weight:600}
.news-lead{margin-top:34px}
.news-lead-card{
  display:grid;gap:0;background:var(--v-white);border:1px solid var(--v-line);
  border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.news-lead-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--v-lime)}
.news-lead-card img{width:100%;height:100%;min-height:230px;object-fit:cover}
.news-lead-body{padding:26px}
.news-lead-body h3{font-size:clamp(19px,2.1vw,24px);font-weight:700;line-height:1.4;margin-top:14px;letter-spacing:-.01em}
.news-lead-body p{font-size:15px;color:var(--v-muted);margin-top:12px}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px;font-size:13px;color:var(--v-muted)}
.dot{width:4px;height:4px;border-radius:50%;background:var(--v-line)}
.badge{
  display:inline-flex;align-items:center;font-size:11.5px;font-weight:600;letter-spacing:.06em;
  padding:4px 12px;border-radius:var(--r-pill);
}
.badge-lime{background:var(--v-lime);color:var(--v-black)}
.badge-line{border:1px solid var(--v-line);color:var(--v-muted);background:var(--v-white)}
@media(min-width:900px){
  .news-lead-card{grid-template-columns:5fr 7fr}
}
.news-list{margin-top:26px;border-top:1px solid var(--v-line)}
.news-row{
  display:flex;align-items:center;gap:18px;padding:20px 14px;
  border-bottom:1px solid var(--v-line);transition:background var(--dur) var(--ease);
}
.news-row:hover{background:#FAFAF6}
.news-row:hover .news-arrow{transform:translateX(5px);color:#4f6a1f}
.news-thumb{width:72px;height:72px;border-radius:12px;overflow:hidden;flex:none}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-body{min-width:0;flex:1}
.news-body h4{font-size:16.5px;font-weight:600;line-height:1.45;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical}
.news-body p{font-size:14px;color:var(--v-muted);margin-top:6px;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.news-row-meta{display:flex;align-items:center;gap:10px;margin-top:8px;font-size:12.5px;color:var(--v-muted)}
.news-arrow{flex:none;font-size:14px;color:var(--v-muted);transition:transform var(--dur) var(--ease),color var(--dur) var(--ease)}
@media(min-width:768px){
  .news-thumb{width:112px;height:112px}
  .news-body h4{font-size:17.5px}
  .news-arrow{font-size:16px;padding-right:10px}
}
.empty-state{
  margin-top:30px;border:1px dashed var(--v-line);border-radius:var(--r-md);
  background:var(--v-white);padding:56px 24px;text-align:center;
}
.empty-state i{font-size:26px;color:var(--v-muted)}
.empty-state p{margin-top:14px;font-size:15px;color:var(--v-muted)}
.empty-state .btn{margin-top:22px}

/* 页脚 */
.footer{background:var(--v-black);color:var(--v-paper);padding:64px 0 0}
.footer-grid{display:grid;gap:34px}
.footer h4{font-size:13px;letter-spacing:.1em;color:rgba(245,245,239,.5);font-weight:600;text-transform:uppercase}
.footer-links{margin-top:18px;display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14.5px;color:rgba(245,245,239,.82);transition:color var(--dur) var(--ease)}
.footer-links a:hover{color:var(--v-lime)}
.footer-desc{font-size:14px;color:rgba(245,245,239,.66);margin-top:16px;max-width:320px}
.footer-contact{font-size:14px;color:rgba(245,245,239,.66);margin-top:14px}
.sub-form{display:flex;gap:10px;margin-top:18px}
.sub-form input{
  flex:1;min-width:0;background:rgba(255,255,255,.05);border:1px solid var(--v-line-dark);
  border-radius:10px;padding:11px 14px;font-size:14px;color:var(--v-paper);
}
.sub-form input::placeholder{color:rgba(245,245,239,.4)}
.sub-form input:focus{outline:none;border-color:var(--v-lime);box-shadow:0 0 0 2px rgba(198,240,60,.2)}
.footer-bottom{
  margin-top:52px;border-top:1px solid var(--v-line-dark);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:12.5px;color:rgba(245,245,239,.5);
}
.footer-bottom a{color:rgba(245,245,239,.6)}
.footer-bottom a:hover{color:var(--v-lime)}
@media(min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px}}

/* 进场动画 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 520ms var(--ease),transform 520ms var(--ease)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --v-black:#0E1512;
  --v-lime:#C6F03C;
  --v-flame:#FF4D1C;
  --v-paper:#F5F5EF;
  --v-ink:#1A1D1B;
  --v-muted:#6B736E;
  --v-line:#E3E4DA;
  --v-white:#FFFFFF;
  --r-sm:8px;
  --r-md:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,21,18,.05);
  --sh-2:0 18px 44px -22px rgba(14,21,18,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:240ms;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--v-paper);
  color:var(--v-ink);
  font-family:"HarmonyOS Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
img{display:block;max-width:100%;height:auto;background:#E9EAE2}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
::selection{background:var(--v-lime);color:var(--v-black)}
.num,.font-disp{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

/* ---------- 容器 ---------- */
.container-v{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container-v{padding:0 32px}}
@media(min-width:1024px){.container-v{padding:0 48px}}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(245,245,239,.9);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.94);
  border-bottom-color:var(--v-line);
  box-shadow:var(--sh-1);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:76px;transition:height 200ms var(--ease);
}
.site-header.is-scrolled .nav-inner{height:68px}
.logo-mark{
  width:34px;height:34px;flex:0 0 34px;
  display:grid;place-items:center;
  background:var(--v-lime);color:var(--v-black);
  font-family:"Barlow Condensed",sans-serif;
  font-size:21px;font-weight:700;font-style:italic;line-height:1;
  clip-path:polygon(0 0,100% 0,84% 100%,0 100%);
  padding-right:3px;
}
.logo-text{font-size:19px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:26px}
.nav-link{
  position:relative;display:inline-block;
  padding:6px 2px;font-size:15px;font-weight:500;color:var(--v-ink);
  transition:color var(--dur) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;border-radius:2px;
  background:var(--v-lime);transform:scaleX(0);transform-origin:center;
  transition:transform 180ms var(--ease);
}
.nav-link:hover::after,.nav-link:focus-visible::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{font-weight:600}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--v-line);background:#fff;color:var(--v-ink);
  cursor:pointer;transition:border-color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--v-lime)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease),
             color var(--dur) var(--ease),border-color var(--dur) var(--ease),
             box-shadow var(--dur) var(--ease),filter var(--dur) var(--ease);
}
.btn:active{transform:scale(.98)}
.btn:focus-visible{outline:2px solid var(--v-lime);outline-offset:2px}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn-primary{background:var(--v-lime);color:var(--v-black)}
.btn-primary:hover{filter:brightness(1.06);box-shadow:0 14px 30px -16px rgba(198,240,60,.95)}
.btn-primary:hover .arr{transform:translateX(4px)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.28);color:#F5F5EF}
.btn-ghost:hover{border-color:var(--v-lime);color:var(--v-lime)}
.btn-outline{background:#fff;border-color:var(--v-line);color:var(--v-ink)}
.btn-outline:hover{border-color:var(--v-lime);box-shadow:0 10px 24px -18px rgba(14,21,18,.5)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-lg{height:54px;padding:0 30px;font-size:16px}
.nav-cta{height:46px;padding:0 22px}
.arr{transition:transform var(--dur) var(--ease)}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--v-ink);
  border-bottom:2px solid var(--v-lime);padding-bottom:2px;
  transition:color var(--dur) var(--ease);
}
.text-link:hover{color:#5C7A12}
.text-link i{transition:transform var(--dur) var(--ease)}
.text-link:hover i{transform:translateX(4px)}

/* ---------- 徽章 / 脊标 ---------- */
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.06em;
}
.badge-lime{background:var(--v-lime);color:var(--v-black)}
.badge-line{border:1px solid rgba(255,255,255,.24);color:rgba(245,245,239,.86)}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.14em;
  color:var(--v-muted);text-transform:uppercase;margin-bottom:10px;
}
.eyebrow-light{color:rgba(245,245,239,.62)}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:#fff;border-bottom:1px solid var(--v-line)}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:10px;padding:14px 0;font-size:13px;color:var(--v-muted)}
.crumb a{transition:color var(--dur) var(--ease)}
.crumb a:hover{color:var(--v-ink)}
.crumb .sep{color:#C7CBC1;font-style:italic}
.crumb .current{color:var(--v-ink);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头部 ---------- */
.post-hero{
  position:relative;overflow:hidden;background:var(--v-black);color:#F5F5EF;
  padding:60px 0 84px;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 26px),0 100%);
}
.post-hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.2;
}
.post-hero::after{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(118deg,rgba(255,255,255,.05) 0 2px,transparent 2px 10px);
}
.post-hero .container-v{position:relative;z-index:2}
.post-hero .badge-lime{margin-bottom:20px}
.post-title{
  margin:0;max-width:960px;
  font-size:clamp(30px,4.6vw,58px);font-weight:800;line-height:1.1;letter-spacing:-.02em;
  color:#F5F5EF;
}
.post-sub{
  margin:20px 0 0;max-width:720px;
  font-size:16px;line-height:1.85;color:rgba(245,245,239,.72);
}
.post-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:28px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13.5px;color:rgba(245,245,239,.66);
}
.post-meta b{color:#F5F5EF;font-weight:600}
.post-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(245,245,239,.35)}

/* ---------- 正文布局 ---------- */
.post-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 282px;
  gap:56px;padding:64px 0 88px;align-items:start;
}
@media(max-width:1023px){
  .post-layout{grid-template-columns:1fr;gap:36px;padding:48px 0 64px}
}
.post-content{min-width:0}

/* ---------- 正文排版 ---------- */
.article-body{
  font-size:17px;line-height:1.9;color:#242824;
  word-break:break-word;
}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;margin:56px 0 18px;padding-left:16px;
  font-size:clamp(23px,2.6vw,30px);font-weight:700;line-height:1.35;
  color:var(--v-ink);scroll-margin-top:100px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;
  border-radius:2px;background:var(--v-lime);
}
.article-body h3{
  margin:32px 0 12px;font-size:21px;font-weight:600;line-height:1.45;
  color:var(--v-ink);scroll-margin-top:100px;
}
.article-body h4{margin:24px 0 10px;font-size:18px;font-weight:600;color:var(--v-ink)}
.article-body h1{
  margin:48px 0 16px;padding-left:16px;position:relative;
  font-size:clamp(23px,2.6vw,30px);font-weight:700;line-height:1.35;
}
.article-body h1::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;
  border-radius:2px;background:var(--v-lime);
}
.article-body ul{list-style:disc;margin:0 0 1.2em;padding-left:1.35em}
.article-body ol{list-style:decimal;margin:0 0 1.2em;padding-left:1.4em}
.article-body li{margin:.4em 0}
.article-body li::marker{color:#8FA83C}
.article-body a{
  color:#3F5A0F;
  text-decoration:underline;
  text-decoration-color:var(--v-lime);
  text-decoration-thickness:2px;
  text-underline-offset:3px;
  transition:color var(--dur) var(--ease),text-decoration-color var(--dur) var(--ease);
}
.article-body a:hover{color:#5C7A12;text-decoration-color:#5C7A12}
.article-body img{
  width:100%;border-radius:12px;margin:26px 0 8px;
}
.article-body figure{margin:26px 0}
.article-body figcaption{
  margin-top:10px;text-align:center;font-size:13px;color:var(--v-muted);
}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;
  border-left:3px solid var(--v-lime);background:#FAFAF6;
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:#3C423D;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{
  width:100%;border-collapse:collapse;font-size:15px;margin:26px 0;
  display:block;overflow-x:auto;
}
.article-body th,.article-body td{
  border:1px solid var(--v-line);padding:10px 14px;text-align:left;white-space:nowrap;
}
.article-body th{background:#FAFAF6;font-weight:600}
.article-body code{
  background:#F0F1E9;border-radius:6px;padding:2px 6px;font-size:.92em;
}
.article-body pre{
  background:var(--v-black);color:#E7EAE0;padding:18px 20px;
  border-radius:12px;overflow-x:auto;font-size:14.5px;line-height:1.7;
}
.article-body hr{border:none;border-top:1px solid var(--v-line);margin:40px 0}

/* ---------- 空状态 ---------- */
.empty-state{
  border:1px dashed var(--v-line);border-radius:var(--r-md);
  background:#fff;padding:64px 24px;text-align:center;
}
.empty-icon{
  width:56px;height:56px;margin:0 auto 18px;border-radius:var(--r-md);
  display:grid;place-items:center;background:#F3F6E4;color:#7E9A26;font-size:22px;
}
.empty-state p{margin:0 0 22px;font-size:17px;color:var(--v-muted)}

/* ---------- 文末标签与操作 ---------- */
.post-foot{
  display:flex;flex-wrap:wrap;gap:18px;align-items:center;justify-content:space-between;
  margin-top:56px;padding-top:26px;border-top:1px solid var(--v-line);
}
.tag-list{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;
  border:1px solid var(--v-line);border-radius:var(--r-pill);
  background:#fff;font-size:13px;color:#4A514C;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.tag:hover{border-color:var(--v-lime);color:var(--v-ink)}
.post-actions{display:flex;align-items:center;gap:20px}

/* ---------- 上一篇 / 下一篇 ---------- */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:34px}
.post-nav-card{
  display:block;padding:20px 22px;background:#fff;
  border:1px solid var(--v-line);border-radius:var(--r-md);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.post-nav-card:hover{transform:translateY(-4px);border-color:var(--v-lime);box-shadow:var(--sh-2)}
.post-nav-label{
  display:block;font-size:12px;font-weight:700;letter-spacing:.12em;
  color:var(--v-muted);margin-bottom:8px;text-transform:uppercase;
}
.post-nav-title{display:block;font-size:15.5px;font-weight:600;line-height:1.6;color:var(--v-ink)}
.post-nav-card.next{text-align:right}
@media(max-width:640px){.post-nav{grid-template-columns:1fr}}

/* ---------- 侧栏 ---------- */
.post-side{display:flex;flex-direction:column;gap:20px;position:sticky;top:100px}
@media(max-width:1023px){.post-side{position:static;top:auto}}
.toc{
  background:#fff;border:1px solid var(--v-line);border-radius:var(--r-md);
  padding:20px 18px 16px;box-shadow:var(--sh-1);
}
.toc h3{
  margin:0 0 12px;font-size:12px;font-weight:700;letter-spacing:.14em;
  color:var(--v-muted);text-transform:uppercase;
}
.toc a{
  display:block;padding:7px 10px;border-left:2px solid transparent;
  font-size:14px;line-height:1.55;color:#5A625D;border-radius:0 6px 6px 0;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.toc a:hover{background:#FAFAF6;color:var(--v-ink)}
.toc a.sub{padding-left:22px;font-size:13px;color:#78807A}
.toc a.active{
  border-left-color:var(--v-lime);background:#F7FBE8;
  color:var(--v-ink);font-weight:600;
}
.side-card{
  background:var(--v-black);color:#F5F5EF;border-radius:var(--r-md);
  padding:22px 20px;position:relative;overflow:hidden;
}
.side-card::after{
  content:"";position:absolute;right:-30px;top:-30px;width:110px;height:110px;
  border:1px solid rgba(198,240,60,.28);border-radius:50%;
}
.side-card-tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;margin-bottom:12px;
  border-radius:var(--r-pill);background:var(--v-lime);color:var(--v-black);
  font-size:11.5px;font-weight:700;letter-spacing:.08em;
}
.side-card p{margin:0 0 16px;font-size:13.5px;line-height:1.75;color:rgba(245,245,239,.72)}
.side-card .btn{width:100%}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
@media(max-width:1023px){.section{padding:72px 0}}
@media(max-width:640px){.section{padding:56px 0}}
.section-head{
  display:flex;flex-wrap:wrap;gap:18px;align-items:flex-end;justify-content:space-between;
  margin-bottom:40px;
}
.section-head h2{
  margin:0;font-size:clamp(24px,3.2vw,36px);font-weight:700;line-height:1.25;letter-spacing:-.01em;
  color:var(--v-ink);
}
.section-head p{margin:10px 0 0;font-size:15px;color:var(--v-muted);max-width:620px}

/* ---------- 相关推荐 ---------- */
.related{background:#fff;border-top:1px solid var(--v-line)}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rcard{
  display:flex;flex-direction:column;background:#fff;overflow:hidden;
  border:1px solid var(--v-line);border-radius:var(--r-md);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.rcard:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--v-lime)}
.rcard-img{width:100%;aspect-ratio:16/9;object-fit:cover}
.rcard-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rcard-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--v-muted)}
.rcard-tag{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;
  border-radius:var(--r-pill);background:#F3F6E4;color:#5C7A12;
  font-size:11.5px;font-weight:700;letter-spacing:.06em;
}
.rcard-title{margin:0;font-size:17px;font-weight:700;line-height:1.5;color:var(--v-ink)}
.rcard-desc{margin:0;font-size:14px;line-height:1.75;color:var(--v-muted)}
.rcard-more{
  margin-top:auto;display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;color:var(--v-ink);
}
.rcard-more i{transition:transform var(--dur) var(--ease)}
.rcard:hover .rcard-more i{transform:translateX(4px)}
@media(max-width:1023px){.related-grid{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.related-grid{grid-template-columns:1fr}}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;color:#F5F5EF;
  background:var(--v-black) url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  padding:80px 0;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(92deg,rgba(14,21,18,.95),rgba(14,21,18,.76));
}
.cta-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.25fr 1fr;gap:48px;align-items:center;
}
.cta-inner h2{
  margin:0 0 14px;font-size:clamp(26px,3.4vw,40px);font-weight:800;
  line-height:1.2;letter-spacing:-.015em;color:#F5F5EF;
}
.cta-inner p{margin:0;font-size:15.5px;line-height:1.85;color:rgba(245,245,239,.7);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
@media(max-width:1023px){
  .cta-inner{grid-template-columns:1fr;gap:28px}
  .cta-actions{justify-content:flex-start}
}

/* ---------- 页脚 ---------- */
.footer{background:var(--v-black);color:#F5F5EF;padding:72px 0 0}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:40px;
  padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.12);
}
.footer .logo-mark{background:var(--v-lime);color:var(--v-black)}
.footer .logo-text{color:#F5F5EF}
.footer h4{
  margin:0 0 16px;font-size:13px;font-weight:700;letter-spacing:.12em;
  color:rgba(245,245,239,.58);text-transform:uppercase;
}
.footer-desc{margin:16px 0 10px;max-width:330px;font-size:14px;line-height:1.8;color:rgba(245,245,239,.7)}
.footer-contact{margin:0;font-size:13.5px;color:rgba(245,245,239,.6)}
.footer-links a{display:block;padding:6px 0;font-size:14.5px;color:rgba(245,245,239,.8);transition:color var(--dur) var(--ease)}
.footer-links a:hover{color:var(--v-lime)}
.sub-form{display:flex;gap:8px}
.sub-form input{
  flex:1;min-width:0;height:44px;padding:0 14px;border-radius:10px;
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);
  color:#F5F5EF;font-size:14px;outline:none;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.sub-form input::placeholder{color:rgba(245,245,239,.45)}
.sub-form input:focus{border-color:var(--v-lime);box-shadow:0 0 0 3px rgba(198,240,60,.18)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding:22px 0 28px;font-size:12.5px;color:rgba(245,245,239,.55);
}
@media(max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.footer-grid{grid-template-columns:1fr;gap:32px}}

/* ---------- 移动端抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:90;
  display:flex;flex-direction:column;
  background:var(--v-black);color:#F5F5EF;
  padding:24px 22px 26px;
  transform:translateX(100%);
  transition:transform 300ms var(--ease);
  visibility:hidden;
}
.drawer.open{transform:translateX(0);visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px}
.drawer-close{
  width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.2);background:transparent;color:#F5F5EF;
  cursor:pointer;transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.drawer-close:hover{border-color:var(--v-lime);color:var(--v-lime)}
.drawer-links{display:flex;flex-direction:column;gap:6px}
.drawer-links a{
  font-size:20px;font-weight:600;padding:14px 0;
  border-bottom:1px solid rgba(255,255,255,.1);
  transition:color var(--dur) var(--ease);
}
.drawer-links a:hover,.drawer-links a.active{color:var(--v-lime)}
.drawer-foot{margin-top:auto;padding-top:24px}

/* ---------- 移动端底部条 ---------- */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  grid-template-columns:1fr 1fr;gap:10px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(255,255,255,.96);
  border-top:1px solid var(--v-line);
  backdrop-filter:blur(10px);
}
@media(max-width:768px){
  .mobile-bar{display:grid}
  body{padding-bottom:78px}
  .nav-menu{display:none}
  .nav-toggle{display:grid;place-items:center}
  .nav-cta{display:none}
}

/* ---------- 滚动进场 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 300ms var(--ease),transform 300ms var(--ease)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* roulang page: category1 */
:root{
  --v-black:#0E1512;
  --v-lime:#C6F03C;
  --v-flame:#FF4D1C;
  --v-paper:#F5F5EF;
  --v-ink:#1A1D1B;
  --v-muted:#6B736E;
  --v-line:#E3E4DA;
  --v-card:#FFFFFF;
  --r-sm:8px;
  --r-md:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,21,18,.05);
  --sh-2:0 18px 44px -22px rgba(14,21,18,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:240ms;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:'HarmonyOS Sans SC','PingFang SC','Noto Sans SC','Microsoft YaHei',sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--v-ink);
  background:var(--v-paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease)}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--v-lime);outline-offset:2px;border-radius:4px}
h1,h2,h3,h4{margin:0;line-height:1.2}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.num{font-family:'Barlow Condensed','Oswald',sans-serif;font-variant-numeric:tabular-nums;letter-spacing:.01em}

/* 容器 */
.container-v{max-width:1200px;margin:0 auto;padding:0 20px}

/* 顶部导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(245,245,239,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header.scrolled{
  background:rgba(255,255,255,.92);
  border-bottom-color:var(--v-line);
  box-shadow:0 8px 30px -24px rgba(14,21,18,.5);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:80px;transition:height 200ms var(--ease);
}
.site-header.scrolled .nav-inner{height:70px}
.logo-mark{
  width:32px;height:32px;flex:0 0 32px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--v-lime);color:var(--v-black);
  font-family:'Barlow Condensed',sans-serif;font-weight:700;font-size:20px;
  border-radius:9px;transform:skewX(-9deg);
}
.logo-text{font-weight:800;font-size:19px;letter-spacing:-.01em;color:var(--v-ink)}
.nav-menu{display:flex;align-items:center;gap:34px}
.nav-link{position:relative;font-size:15px;font-weight:500;padding:6px 0;color:var(--v-ink);white-space:nowrap}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--v-lime);
  transform:scaleX(0);transform-origin:center;transition:transform 180ms var(--ease);
}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{font-weight:600}
.nav-actions{display:flex;align-items:center;gap:12px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  transition:transform var(--dur) var(--ease),filter var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn .arr{transition:transform var(--dur) var(--ease)}
.btn:hover .arr{transform:translateX(4px)}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--v-lime);color:var(--v-black)}
.btn-primary:hover{filter:brightness(1.07);box-shadow:0 14px 30px -18px rgba(198,240,60,.9)}
.btn-ghost{border-color:rgba(245,245,239,.36);color:var(--v-paper)}
.btn-ghost:hover{border-color:var(--v-lime);color:var(--v-lime)}
.btn-outline{border-color:var(--v-line);background:#fff;color:var(--v-ink)}
.btn-outline:hover{border-color:var(--v-black);background:var(--v-black);color:var(--v-paper)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.nav-cta{height:46px;padding:0 22px}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.06em;line-height:1.6;font-weight:600;
}
.badge-lime{background:var(--v-lime);color:var(--v-black)}
.badge-line{border:1px solid var(--v-line);color:var(--v-muted);background:#fff}
.badge-dark{background:rgba(255,255,255,.1);color:var(--v-paper);border:1px solid rgba(255,255,255,.16)}

/* 移动端抽屉 */
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--v-line);
  background:#fff;align-items:center;justify-content:center;font-size:17px;color:var(--v-ink);
}
.drawer{
  position:fixed;inset:0;z-index:120;background:var(--v-black);
  display:flex;flex-direction:column;padding:24px 20px 28px;
  transform:translateY(-100%);transition:transform 320ms var(--ease);
}
.drawer.open{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:36px}
.drawer-head .logo-text{color:var(--v-paper)}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid rgba(255,255,255,.18);color:var(--v-paper);display:inline-flex;align-items:center;justify-content:center;font-size:18px}
.drawer-nav{display:flex;flex-direction:column;gap:6px}
.drawer-nav a{
  font-size:20px;font-weight:600;color:var(--v-paper);padding:14px 0;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.drawer-nav a.active{color:var(--v-lime)}
.drawer-foot{margin-top:auto;padding-top:24px}
.drawer-note{color:rgba(245,245,239,.6);font-size:13px;margin-bottom:14px}

/* Hero */
.hero{
  position:relative;background:var(--v-black);color:var(--v-paper);
  padding-top:80px;overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.34;
}
.hero-veil{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(14,21,18,.96) 0%,rgba(14,21,18,.86) 46%,rgba(14,21,18,.6) 100%);
}
.hero-stripes{
  position:absolute;inset:0;opacity:.05;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.9) 0 1px,transparent 1px 12px);
}
.hero-inner{position:relative;z-index:2;padding:64px 0 84px}
.crumb{display:flex;align-items:center;gap:10px;font-size:13px;color:rgba(245,245,239,.68);margin-bottom:30px;flex-wrap:wrap}
.crumb a:hover{color:var(--v-lime)}
.crumb .sep{opacity:.5}
.hero h1{
  font-size:clamp(32px,5.4vw,62px);
  font-weight:800;letter-spacing:-.02em;line-height:1.06;
  margin-bottom:22px;max-width:15em;
}
.hero h1 .hl{
  color:var(--v-lime);
  display:inline-block;
}
.hero-sub{
  font-size:clamp(16px,1.4vw,18px);color:rgba(245,245,239,.82);
  max-width:34em;margin-bottom:32px;line-height:1.8;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-meta{
  margin-top:26px;font-size:13px;letter-spacing:.04em;color:rgba(245,245,239,.62);
  display:flex;flex-wrap:wrap;gap:10px 22px;
}
.hero-meta i{color:var(--v-lime);margin-right:6px}
.hero-stats-wrap{
  margin-top:48px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  border-top:1px solid rgba(255,255,255,.14);
}
.hero-stat{padding:22px 18px 4px 0;border-right:1px solid rgba(255,255,255,.1)}
.hero-stat:last-child{border-right:0}
.hero-stat .v{
  font-family:'Barlow Condensed','Oswald',sans-serif;font-variant-numeric:tabular-nums;
  font-size:clamp(28px,3.4vw,40px);font-weight:700;color:var(--v-lime);line-height:1;
}
.hero-stat .k{font-size:13px;color:rgba(245,245,239,.66);margin-top:8px;letter-spacing:.04em}
.hero-cut{
  position:absolute;left:0;right:0;bottom:-1px;height:44px;background:var(--v-paper);
  clip-path:polygon(0 100%,100% 22%,100% 100%);z-index:3;
}

/* 通用板块 */
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-dark{background:var(--v-black);color:var(--v-paper)}
.section-head{max-width:760px;margin-bottom:52px}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:var(--v-muted);margin-bottom:16px;
}
.eyebrow .idx{
  font-family:'Barlow Condensed',sans-serif;font-size:13px;letter-spacing:.08em;
  background:var(--v-lime);color:var(--v-black);padding:2px 9px;border-radius:var(--r-pill);
}
.section-dark .eyebrow{color:rgba(245,245,239,.6)}
.section-title{font-size:clamp(26px,3.2vw,40px);font-weight:700;letter-spacing:-.015em;line-height:1.22}
.section-desc{margin-top:18px;color:var(--v-muted);font-size:16px;max-width:46em}
.section-dark .section-desc{color:rgba(245,245,239,.68)}

/* 交错图文 */
.zig{display:grid;grid-template-columns:repeat(12,1fr);gap:48px;align-items:center}
.zig + .zig{margin-top:88px}
.zig-text{grid-column:span 7}
.zig-media{grid-column:span 5}
.zig.flip .zig-text{grid-column:6 / span 7;order:2}
.zig.flip .zig-media{grid-column:1 / span 5;order:1}
.zig h3{font-size:clamp(21px,2.3vw,28px);font-weight:700;margin-bottom:18px;letter-spacing:-.01em}
.zig p{color:var(--v-muted);margin-bottom:14px}
.zig-media img{
  width:100%;border-radius:var(--r-md);object-fit:cover;background:#E9EAE2;
  box-shadow:var(--sh-2);
}
.ratio-43{aspect-ratio:4/3}
.ratio-1610{aspect-ratio:16/10}
.check-list{margin-top:22px;display:grid;gap:12px}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:16px;color:var(--v-ink)}
.check-list i{color:var(--v-black);background:var(--v-lime);width:22px;height:22px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:11px;flex:0 0 22px;margin-top:5px}

/* 要点矩阵 */
.matrix{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.mcard{
  background:#fff;border:1px solid var(--v-line);border-radius:var(--r-md);
  padding:32px;box-shadow:var(--sh-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
  display:flex;flex-direction:column;gap:14px;position:relative;overflow:hidden;
}
.mcard:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--v-lime)}
.mcard .no{
  font-family:'Barlow Condensed',sans-serif;font-size:14px;letter-spacing:.12em;font-weight:600;
  color:var(--v-muted);
}
.mcard h3{font-size:20px;font-weight:700}
.mcard p{color:var(--v-muted);font-size:15.5px}
.mcard .go{
  margin-top:auto;display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--v-ink);
}
.mcard .go i{transition:transform var(--dur) var(--ease)}
.mcard:hover .go i{transform:translateX(5px)}
.m-wide{grid-column:span 7}
.m-narrow{grid-column:span 5}
.m-full{grid-column:span 12;flex-direction:row;align-items:center;gap:28px;justify-content:space-between}
.m-full .m-full-text{max-width:44em}
.spec-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}
.spec{font-size:13px;color:var(--v-muted);border:1px dashed var(--v-line);border-radius:var(--r-pill);padding:4px 12px}

/* 横向轨道 */
.rail-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px;flex-wrap:wrap}
.rail-btns{display:flex;gap:10px}
.rail-btn{
  width:46px;height:46px;border-radius:50%;border:1px solid var(--v-line);background:#fff;
  display:inline-flex;align-items:center;justify-content:center;color:var(--v-ink);
  transition:all var(--dur) var(--ease);
}
.rail-btn:hover{background:var(--v-black);color:var(--v-paper);border-color:var(--v-black)}
.rail{
  display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 22px;scrollbar-width:thin;
}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-thumb{background:var(--v-line);border-radius:99px}
.rail-card{
  flex:0 0 312px;scroll-snap-align:start;background:#fff;border:1px solid var(--v-line);
  border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
  display:flex;flex-direction:column;
}
.rail-card:hover{transform:translateY(-6px);box-shadow:var(--sh-2);border-color:var(--v-lime)}
.rail-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:#E9EAE2}
.rail-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.rail-body h3{font-size:18px;font-weight:700}
.rail-body p{font-size:14.6px;color:var(--v-muted)}
.rail-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--v-muted);letter-spacing:.03em}

/* 流程带 */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid rgba(255,255,255,.14)}
.flow-step{padding:36px 26px 30px 0;border-right:1px solid rgba(255,255,255,.1);position:relative}
.flow-step:last-child{border-right:0}
.flow-step .no{
  font-family:'Barlow Condensed',sans-serif;font-size:38px;font-weight:700;color:rgba(245,245,239,.28);line-height:1;
}
.flow-step .marks{position:absolute;top:-1px;left:0;width:52px;height:3px;background:var(--v-lime)}
.flow-step h3{font-size:19px;font-weight:700;margin:18px 0 12px;color:var(--v-paper)}
.flow-step p{font-size:14.6px;color:rgba(245,245,239,.66)}
.flow-step .tip{margin-top:14px;font-size:13px;color:var(--v-lime);letter-spacing:.03em}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:repeat(12,1fr);gap:44px}
.faq-aside{grid-column:span 4}
.faq-aside-inner{position:sticky;top:110px}
.faq-list{grid-column:span 8;display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:#fff;border:1px solid var(--v-line);border-radius:var(--r-md);
  overflow:hidden;transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.faq-item.open{border-color:var(--v-lime);background:#FAFAF6}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 26px;text-align:left;font-size:17px;font-weight:600;color:var(--v-ink);
}
.faq-q i{
  color:var(--v-muted);font-size:14px;transition:transform 300ms var(--ease),color var(--dur) var(--ease);
}
.faq-item.open .faq-q i{transform:rotate(45deg);color:var(--v-flame)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 300ms var(--ease)}
.faq-a-inner{padding:0 26px 24px;color:var(--v-muted);font-size:15.6px;line-height:1.82}

/* CTA 表单区 */
.cta-section{position:relative;background:var(--v-black);color:var(--v-paper);overflow:hidden}
.cta-bg{
  position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;opacity:.2;
}
.cta-veil{position:absolute;inset:0;background:linear-gradient(90deg,rgba(14,21,18,.95),rgba(14,21,18,.78))}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:repeat(12,1fr);gap:48px;padding:92px 0}
.cta-copy{grid-column:span 5}
.cta-copy h2{font-size:clamp(26px,3.2vw,38px);font-weight:700;letter-spacing:-.015em;line-height:1.24;margin-bottom:18px}
.cta-copy p{color:rgba(245,245,239,.7);margin-bottom:24px}
.cta-points{display:grid;gap:12px;margin-bottom:28px}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:rgba(245,245,239,.82)}
.cta-points i{color:var(--v-lime);margin-top:6px;font-size:13px}
.cta-form{grid-column:span 7}
.form-card{
  background:#fff;border-radius:var(--r-md);padding:34px;box-shadow:var(--sh-2);
  color:var(--v-ink);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field.span2{grid-column:span 2}
.field label{font-size:13px;color:var(--v-muted);letter-spacing:.03em}
.field input,.field select,.field textarea{
  border:1px solid var(--v-line);border-radius:10px;padding:12px 14px;background:#FCFCF8;
  font-size:15px;outline:none;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease);
}
.field textarea{min-height:92px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--v-lime);box-shadow:0 0 0 2px rgba(198,240,60,.5);background:#fff;
}
.field.error input,.field.error select{border-color:var(--v-flame);box-shadow:0 0 0 2px rgba(255,77,28,.18)}
.form-note{font-size:12px;color:var(--v-muted);margin-top:14px;line-height:1.7}
.form-msg{
  margin-top:14px;font-size:14px;display:none;padding:12px 14px;border-radius:10px;
}
.form-msg.ok{display:block;background:rgba(198,240,60,.2);color:#3d5208;border:1px solid var(--v-lime)}
.form-msg.err{display:block;background:rgba(255,77,28,.1);color:#9c2a0c;border:1px solid var(--v-flame)}

/* 页脚 */
.footer{background:var(--v-black);color:rgba(245,245,239,.72);padding:76px 0 30px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:44px}
.footer .logo-text{color:var(--v-paper)}
.footer h4{font-size:14px;letter-spacing:.1em;color:var(--v-paper);margin-bottom:20px;font-weight:700}
.footer-desc{font-size:14.6px;line-height:1.85;margin:18px 0 14px;max-width:26em}
.footer-contact{font-size:14px;color:rgba(245,245,239,.6)}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14.6px;color:rgba(245,245,239,.72)}
.footer-links a:hover{color:var(--v-lime)}
.sub-form{display:flex;gap:10px}
.sub-form input{
  flex:1;min-width:0;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
  border-radius:10px;padding:11px 14px;color:var(--v-paper);font-size:14px;outline:none;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.sub-form input::placeholder{color:rgba(245,245,239,.42)}
.sub-form input:focus{border-color:var(--v-lime);box-shadow:0 0 0 2px rgba(198,240,60,.35)}
.footer-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px 32px;justify-content:space-between;
  font-size:13px;color:rgba(245,245,239,.5);
}

/* 进场动画 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 300ms var(--ease),transform 300ms var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* 响应式 */
@media (min-width:768px){
  .container-v{padding:0 32px}
  .section{padding:104px 0}
}
@media (min-width:1024px){
  .container-v{padding:0 48px}
  .section{padding:112px 0}
}
@media (max-width:1023px){
  .nav-menu{display:none}
  .nav-toggle{display:inline-flex}
  .nav-cta{display:none}
  .faq-wrap{gap:32px}
  .faq-aside{grid-column:span 12}
  .faq-aside-inner{position:static}
  .faq-list{grid-column:span 12}
  .zig{grid-template-columns:1fr;gap:28px}
  .zig-text,.zig-media,.zig.flip .zig-text,.zig.flip .zig-media{grid-column:auto;order:initial}
  .zig + .zig{margin-top:64px}
  .cta-inner{grid-template-columns:1fr;gap:32px;padding:72px 0}
  .cta-copy,.cta-form{grid-column:auto}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8}
  .section{padding:56px 0}
  .section-tight{padding:48px 0}
  .hero{padding-top:76px}
  .hero-inner{padding:40px 0 64px}
  .hero h1{font-size:clamp(30px,8vw,44px)}
  .hero-stats-wrap{grid-template-columns:repeat(2,1fr);margin-top:36px}
  .hero-stat:nth-child(2){border-right:0}
  .hero-stat{padding:18px 14px 6px 0}
  .matrix{gap:18px}
  .m-wide,.m-narrow,.m-full{grid-column:span 12}
  .m-full{flex-direction:column;align-items:flex-start;gap:14px}
  .mcard{padding:24px}
  .flow{grid-template-columns:1fr;border-top:0}
  .flow-step{border-right:0;border-top:1px solid rgba(255,255,255,.12);padding:26px 0 22px}
  .flow-step .marks{top:-1px;width:40px}
  .rail-card{flex:0 0 264px}
  .form-grid{grid-template-columns:1fr}
  .field.span2{grid-column:auto}
  .form-card{padding:24px}
  .footer{padding:56px 0 24px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;gap:8px}
  .crumb{font-size:12px;margin-bottom:22px}
}
@media (max-width:520px){
  .hero-cta{width:100%}
  .hero-cta .btn{width:100%}
  .sub-form{flex-direction:column}
  .sub-form .btn{width:100%}
}

/* roulang page: category2 */
:root{
  --v-black:#0E1512;
  --v-lime:#C6F03C;
  --v-flame:#FF4D1C;
  --v-paper:#F5F5EF;
  --v-white:#FFFFFF;
  --v-ink:#1A1D1B;
  --v-muted:#6B736E;
  --v-line:#E3E4DA;
  --v-dark-line:rgba(255,255,255,.12);
  --r-sm:8px;
  --r-md:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,21,18,.05);
  --sh-2:0 18px 44px -22px rgba(14,21,18,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:240ms;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:'Noto Sans SC','HarmonyOS Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
  background:var(--v-paper);
  color:var(--v-ink);
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;line-height:1.15;letter-spacing:-.02em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.num,.latin{font-family:'Barlow Condensed','Noto Sans SC',sans-serif;font-variant-numeric:tabular-nums}

.container-v{max-width:1200px;margin:0 auto;padding:0 20px;width:100%}
@media (min-width:768px){.container-v{padding:0 32px}}
@media (min-width:1024px){.container-v{padding:0 48px}}

/* ---------- 按钮体系 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);border:1px solid transparent;
  font-weight:600;line-height:1;cursor:pointer;white-space:nowrap;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),transform var(--dur) var(--ease),
             filter var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn-primary{background:var(--v-lime);color:var(--v-black)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-primary .arr{transition:transform var(--dur) var(--ease)}
.btn-primary:hover .arr{transform:translateX(4px)}
.btn-ghost{background:transparent;color:var(--v-paper);border-color:rgba(245,245,239,.34)}
.btn-ghost:hover{border-color:var(--v-lime);color:var(--v-lime)}
.btn-outline{background:transparent;color:var(--v-ink);border-color:var(--v-line)}
.btn-outline:hover{border-color:var(--v-lime);color:var(--v-ink)}
.btn:active{transform:scale(.98)}
.btn:focus-visible{outline:2px solid var(--v-lime);outline-offset:2px}
.btn:disabled{opacity:.45;pointer-events:none}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-md{height:48px;padding:0 24px;font-size:15px}
.btn-lg{height:54px;padding:0 30px;font-size:16px}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(150%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header.scrolled{border-bottom-color:var(--v-line);box-shadow:0 6px 20px -18px rgba(14,21,18,.5)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:76px;transition:height .2s var(--ease)}
.site-header.scrolled .nav-inner{height:68px}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;flex:0 0 auto;
  background:var(--v-black);color:var(--v-lime);
  font-family:'Barlow Condensed',sans-serif;font-weight:700;font-size:20px;
  transform:skewX(-8deg);
}
.logo-text{font-weight:800;font-size:19px;letter-spacing:-.02em;color:var(--v-ink)}
.nav-menu{display:none;align-items:center;gap:30px}
@media (min-width:1024px){.nav-menu{display:flex}}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--v-ink);padding:6px 0;transition:font-weight var(--dur) var(--ease)}
.nav-link::after{
  content:'';position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--v-lime);
  transform:scaleX(0);transform-origin:center;transition:transform .18s var(--ease);
}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-cta{display:none}
@media (min-width:1024px){.nav-cta{display:inline-flex}}
.nav-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;border:1px solid var(--v-line);
  background:#fff;color:var(--v-ink);font-size:17px;cursor:pointer;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--v-lime)}
@media (min-width:1024px){.nav-toggle{display:none}}

/* 移动端抽屉 */
.drawer{
  position:fixed;inset:0;z-index:90;background:var(--v-black);color:var(--v-paper);
  display:flex;flex-direction:column;padding:20px 22px 0;
  transform:translateY(-102%);transition:transform .32s var(--ease);
}
.drawer.open{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:56px}
.drawer-close{
  width:42px;height:42px;border-radius:12px;background:transparent;
  border:1px solid var(--v-dark-line);color:var(--v-paper);font-size:18px;cursor:pointer;
}
.drawer-close:hover{border-color:var(--v-lime);color:var(--v-lime)}
.drawer-links{display:flex;flex-direction:column;gap:6px;margin-top:26px}
.drawer-links a{
  font-size:21px;font-weight:600;padding:14px 0;border-bottom:1px solid var(--v-dark-line);
  transition:color var(--dur) var(--ease);
}
.drawer-links a:hover,.drawer-links a.active{color:var(--v-lime)}
.drawer-foot{padding:20px 0 24px;margin-top:auto}

/* ---------- Hero ---------- */
.hero-c2{
  position:relative;background:var(--v-black);color:var(--v-paper);
  padding:26px 0 78px;overflow:hidden;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 24px),0 100%);
}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;opacity:.32}
.hero-bg::after{content:'';position:absolute;inset:0;background:linear-gradient(105deg,rgba(14,21,18,.96) 0%,rgba(14,21,18,.78) 50%,rgba(14,21,18,.93) 100%)}
.hero-bg::before{
  content:'';position:absolute;inset:0;z-index:1;
  background-image:repeating-linear-gradient(115deg,rgba(198,240,60,.07) 0 2px,transparent 2px 10px);
}
.hero-inner{position:relative;z-index:2}
.crumb{display:flex;align-items:center;gap:10px;font-size:13px;color:rgba(245,245,239,.62);letter-spacing:.02em}
.crumb a{transition:color var(--dur) var(--ease)}
.crumb a:hover{color:var(--v-lime)}
.crumb span.sep{opacity:.45}
.hero-cols{display:grid;gap:44px;margin-top:34px;align-items:end}
@media (min-width:1024px){.hero-cols{grid-template-columns:7fr 5fr;gap:56px;margin-top:46px}}
.eyebrow{
  display:inline-block;font-family:'Barlow Condensed',sans-serif;font-size:13px;
  letter-spacing:.14em;text-transform:uppercase;color:var(--v-lime);
  border:1px solid rgba(198,240,60,.4);border-radius:var(--r-pill);
  padding:5px 14px;margin-bottom:20px;
}
.hero-c2 h1{
  font-size:clamp(30px,8vw,44px);font-weight:800;line-height:1.08;letter-spacing:-.02em;color:#F5F5EF;
}
@media (min-width:1024px){.hero-c2 h1{font-size:clamp(42px,4.6vw,64px)}}
.hero-c2 h1 .hl{
  display:block;margin-top:8px;color:var(--v-lime);
  -webkit-text-stroke:0;
}
.hero-sub{margin-top:20px;font-size:16px;line-height:1.8;color:rgba(245,245,239,.74);max-width:44ch}
@media (min-width:1024px){.hero-sub{font-size:17px}}
.hero-btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-note{margin-top:18px;font-size:13px;color:rgba(245,245,239,.58);letter-spacing:.02em}
.hero-panel{
  border:1px solid var(--v-dark-line);border-radius:var(--r-md);
  background:rgba(255,255,255,.045);padding:24px;
}
.hero-panel h2{font-size:15px;font-weight:600;letter-spacing:.06em;color:rgba(245,245,239,.72);text-transform:uppercase;font-family:'Barlow Condensed',sans-serif}
.hero-panel ul{margin-top:18px;display:grid;gap:14px}
.hero-panel li{display:flex;align-items:baseline;justify-content:space-between;gap:14px;padding-bottom:14px;border-bottom:1px solid var(--v-dark-line)}
.hero-panel li:last-child{border-bottom:0;padding-bottom:0}
.hp-num{font-family:'Barlow Condensed',sans-serif;font-size:30px;font-weight:700;color:var(--v-lime);line-height:1}
.hp-label{font-size:13.5px;color:rgba(245,245,239,.66);text-align:right}

/* ---------- 数据条 ---------- */
.statbar{background:var(--v-black);color:var(--v-paper);border-top:1px solid var(--v-dark-line)}
.statbar-inner{display:grid;grid-template-columns:repeat(2,1fr);gap:1px}
@media (min-width:768px){.statbar-inner{grid-template-columns:repeat(4,1fr)}}
.stat{padding:24px 6px 26px;display:flex;flex-direction:column;gap:4px;position:relative}
@media (min-width:768px){
  .stat{padding:26px 20px}
  .stat + .stat::before{content:'';position:absolute;left:0;top:20px;bottom:20px;width:1px;background:var(--v-dark-line)}
}
.stat-num{font-family:'Barlow Condensed',sans-serif;font-size:34px;font-weight:700;color:var(--v-lime);line-height:1;font-variant-numeric:tabular-nums}
.stat-label{font-size:13px;color:rgba(245,245,239,.6);letter-spacing:.04em}

/* ---------- 通用区块 ---------- */
.section{padding:64px 0}
@media (min-width:768px){.section{padding:84px 0}}
@media (min-width:1024px){.section{padding:104px 0}}
.sec-head{display:grid;gap:18px;margin-bottom:40px}
@media (min-width:1024px){.sec-head{grid-template-columns:5fr 7fr;align-items:end;gap:48px;margin-bottom:56px}}
.sec-num{
  font-family:'Barlow Condensed',sans-serif;font-size:14px;font-weight:700;letter-spacing:.16em;
  color:var(--v-muted);display:block;margin-bottom:12px;
}
.sec-num em{color:var(--v-black);font-style:normal}
.sec-head h2{font-size:clamp(26px,4.2vw,38px);font-weight:800;letter-spacing:-.02em}
.sec-head p{color:var(--v-muted);font-size:16px;line-height:1.85;max-width:56ch}

/* ---------- 时间轴 ---------- */
.timeline{position:relative}
.timeline::before{content:'';position:absolute;left:18px;top:8px;bottom:8px;width:1px;background:var(--v-line)}
@media (min-width:1024px){.timeline::before{left:50%;top:12px;bottom:12px}}
.tl-item{position:relative;padding-left:52px;margin-bottom:22px}
.tl-item:last-child{margin-bottom:0}
@media (min-width:1024px){
  .tl-item{width:50%;padding-left:0;margin-bottom:8px}
  .tl-item:nth-child(odd){padding-right:54px;text-align:right}
  .tl-item:nth-child(even){margin-left:50%;padding-left:54px}
}
.tl-dot{
  position:absolute;left:12px;top:30px;width:13px;height:13px;border-radius:50%;
  background:var(--v-lime);border:3px solid var(--v-paper);z-index:2;
  box-shadow:0 0 0 1px var(--v-lime);
}
@media (min-width:1024px){
  .tl-item:nth-child(odd) .tl-dot{left:auto;right:-6px}
  .tl-item:nth-child(even) .tl-dot{left:-6px}
}
.tl-card{
  background:var(--v-white);border:1px solid var(--v-line);border-radius:var(--r-md);
  padding:22px 24px;box-shadow:var(--sh-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.tl-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--v-lime)}
.tl-num{
  font-family:'Barlow Condensed',sans-serif;font-size:30px;font-weight:700;line-height:1;
  color:var(--v-ink);font-variant-numeric:tabular-nums;display:block;
}
.tl-num::after{content:'';display:block;width:26px;height:3px;background:var(--v-lime);margin-top:9px;border-radius:2px}
@media (min-width:1024px){.tl-item:nth-child(odd) .tl-num::after{margin-left:auto}}
.tl-card h3{font-size:19px;font-weight:700;margin-top:14px}
.tl-card p{font-size:15px;line-height:1.85;color:var(--v-muted);margin-top:8px}

/* ---------- 课程对照 ---------- */
.compare-wrap{display:grid;gap:28px}
@media (min-width:1024px){.compare-wrap{grid-template-columns:7fr 5fr;gap:32px;align-items:start}}
.compare{
  background:var(--v-white);border:1px solid var(--v-line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh-1);
}
.compare-head,.compare-row{display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:10px;padding:16px 18px}
.compare-head{background:var(--v-black);color:var(--v-paper);font-size:13.5px;letter-spacing:.04em}
.compare-head span:nth-child(1){color:rgba(245,245,239,.6)}
.compare-head .c1,.compare-head .c2{font-weight:600}
.compare-head .c2{color:var(--v-lime)}
.compare-row{border-top:1px solid var(--v-line);font-size:14.5px;transition:background var(--dur) var(--ease)}
.compare-row:hover{background:#FAFAF6}
.compare-row .k{color:var(--v-muted);font-size:13.5px}
.compare-row span:not(.k){color:var(--v-ink);line-height:1.6}
.compare-row .v2{font-weight:500}
.compare-foot{padding:14px 18px;border-top:1px solid var(--v-line);font-size:12.5px;color:var(--v-muted);background:#FAFAF6}

.side-stack{display:grid;gap:20px}
.bigstat{
  background:var(--v-black);color:var(--v-paper);border-radius:var(--r-md);
  padding:26px 24px;position:relative;overflow:hidden;
}
.bigstat::after{
  content:'';position:absolute;right:-30px;top:-30px;width:130px;height:130px;border-radius:50%;
  background:radial-gradient(circle,rgba(198,240,60,.22),transparent 68%);
}
.bigstat .n{font-family:'Barlow Condensed',sans-serif;font-size:52px;font-weight:700;color:var(--v-lime);line-height:1;font-variant-numeric:tabular-nums}
.bigstat .u{font-family:'Barlow Condensed',sans-serif;font-size:17px;color:rgba(245,245,239,.62);margin-left:8px}
.bigstat p{margin-top:10px;font-size:14px;color:rgba(245,245,239,.7);line-height:1.7}
.side-figure{border-radius:var(--r-md);overflow:hidden;border:1px solid var(--v-line);background:#E9EAE2}
.side-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10}

/* ---------- 问答（左问右答） ---------- */
.qa-list{border-top:1px solid var(--v-line)}
.qa-row{
  display:grid;gap:8px;padding:26px 4px;border-bottom:1px solid var(--v-line);
  transition:background var(--dur) var(--ease);
}
@media (min-width:1024px){.qa-row{grid-template-columns:5fr 7fr;gap:48px;align-items:start;padding:30px 8px}}
.qa-row:hover{background:#FAFAF6}
.qa-q{display:flex;gap:12px;align-items:flex-start}
.qa-q .idx{
  font-family:'Barlow Condensed',sans-serif;font-size:14px;font-weight:700;color:var(--v-muted);
  letter-spacing:.08em;padding-top:4px;font-variant-numeric:tabular-nums;
}
.qa-q h3{font-size:18px;font-weight:700;line-height:1.5}
.qa-a{font-size:15.5px;line-height:1.85;color:var(--v-muted)}
.qa-a strong{color:var(--v-ink);font-weight:600}

/* ---------- CTA 区 ---------- */
.cta-band{
  position:relative;background:var(--v-black);color:var(--v-paper);padding:72px 0 84px;overflow:hidden;
  clip-path:polygon(0 20px,100% 0,100% 100%,0 100%);
}
.cta-band::before{
  content:'';position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(198,240,60,.06) 0 2px,transparent 2px 11px);
}
.cta-grid{position:relative;display:grid;gap:36px}
@media (min-width:1024px){.cta-grid{grid-template-columns:5fr 7fr;gap:56px;align-items:start}}
.cta-copy h2{font-size:clamp(26px,4vw,38px);font-weight:800;line-height:1.2}
.cta-copy p{margin-top:16px;color:rgba(245,245,239,.7);font-size:16px;line-height:1.85;max-width:42ch}
.cta-points{margin-top:26px;display:grid;gap:12px}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:rgba(245,245,239,.78)}
.cta-points i{color:var(--v-lime);font-size:12px;margin-top:8px}
.form-card{
  border:1px solid var(--v-dark-line);border-radius:var(--r-md);
  background:rgba(255,255,255,.04);padding:26px 22px;
}
@media (min-width:768px){.form-card{padding:30px 28px}}
.form-grid{display:grid;gap:16px}
@media (min-width:768px){.form-grid{grid-template-columns:1fr 1fr}.form-grid .full{grid-column:1 / -1}}
.field label{display:block;font-size:13px;color:rgba(245,245,239,.6);letter-spacing:.04em;margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);
  border-radius:10px;padding:12px 14px;color:var(--v-paper);font-size:15px;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.field textarea{resize:vertical;min-height:84px;line-height:1.7}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,rgba(245,245,239,.6) 50%),linear-gradient(135deg,rgba(245,245,239,.6) 50%,transparent 50%);background-position:calc(100% - 20px) 50%,calc(100% - 15px) 50%;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.field input::placeholder,.field textarea::placeholder{color:rgba(245,245,239,.34)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--v-lime);box-shadow:0 0 0 2px rgba(198,240,60,.28)}
.field .msg{display:none;font-size:12px;color:var(--v-flame);margin-top:6px}
.field.err input,.field.err select{border-color:var(--v-flame)}
.field.err .msg{display:block}
.form-note{margin-top:14px;font-size:12px;color:rgba(245,245,239,.5);line-height:1.7}
.form-ok{display:none;margin-top:16px;padding:12px 14px;border-radius:10px;border:1px solid var(--v-lime);background:rgba(198,240,60,.1);color:var(--v-lime);font-size:14px}
.form-ok.show{display:block}

/* ---------- 页脚 ---------- */
.footer{background:var(--v-black);color:var(--v-paper);padding:72px 0 28px}
.footer-grid{display:grid;gap:40px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:44px}}
.footer h4{font-size:14px;letter-spacing:.06em;color:#fff;margin-bottom:16px;font-weight:600}
.footer-desc{color:rgba(245,245,239,.68);font-size:14px;line-height:1.9;margin-top:16px;max-width:34ch}
.footer-contact{color:rgba(245,245,239,.62);font-size:13px;margin-top:10px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{color:rgba(245,245,239,.68);font-size:14px;transition:color var(--dur) var(--ease)}
.footer-links a:hover{color:var(--v-lime)}
.sub-form{display:flex;gap:8px}
.sub-form input{
  flex:1;min-width:0;height:42px;border-radius:10px;padding:0 12px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  color:var(--v-paper);font-size:14px;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.sub-form input::placeholder{color:rgba(245,245,239,.34)}
.sub-form input:focus{outline:none;border-color:var(--v-lime);box-shadow:0 0 0 2px rgba(198,240,60,.28)}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid var(--v-dark-line);
  display:flex;flex-wrap:wrap;gap:10px 26px;justify-content:space-between;
  font-size:12.5px;color:rgba(245,245,239,.5);
}

/* ---------- 进场动画 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}