/* roulang page: index */
:root{
  --c-ink:#0C1614;
  --c-primary:#0F3B33;
  --c-primary-deep:#08211C;
  --c-accent:#C6F24E;
  --c-accent2:#2FB59A;
  --c-bg:#F7F6F2;
  --c-surface:#FFFFFF;
  --c-surface2:#EFEDE6;
  --c-line:#E3E0D8;
  --c-text:#1B1F1E;
  --c-text2:#5B6663;
  --c-text3:#8B948F;
  --c-on-dark:#EAEAE4;
  --r-s:8px;--r-m:12px;--r-l:18px;--r-pill:999px;
  --sh-card:0 1px 2px rgba(12,22,20,.06),0 14px 34px -16px rgba(12,22,20,.18);
  --sh-hover:0 2px 6px rgba(12,22,20,.09),0 24px 46px -18px rgba(12,22,20,.26);
  --t-fast:160ms;--t-mid:260ms;--t-slow:520ms;
  --ease:cubic-bezier(.22,.7,.24,1);
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter","SF Pro Display",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--c-bg);color:var(--c-text);
  font-family:var(--font-cn);font-size:17px;line-height:1.9;
  font-weight:400;letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
body.is-locked{overflow:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color var(--t-fast) var(--ease),opacity var(--t-fast) var(--ease)}
a:hover{color:var(--c-primary)}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 20px}
p:last-child{margin-bottom:0}
h1,h2,h3,h4{margin:0;font-family:var(--font-cn);letter-spacing:-.01em;color:var(--c-text)}
::selection{background:var(--c-accent);color:var(--c-ink)}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--c-accent);color:var(--c-ink);padding:12px 20px;
  border-radius:0 0 var(--r-m) 0;font-weight:700
}
.skip-link:focus{left:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.narrow{max-width:760px}
.section{padding:104px 0}
.section--tight{padding:76px 0}
.section--dark{background:var(--c-ink);color:var(--c-on-dark)}
.section--dark h2,.section--dark h3{color:var(--c-on-dark)}
.section--alt{background:var(--c-surface2)}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--c-accent2);margin-bottom:18px;font-family:var(--font-num)
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--c-accent2);display:block}
.sec-head{max-width:720px;margin-bottom:52px}
.sec-head h2{font-size:clamp(26px,3.2vw,32px);font-weight:700;line-height:1.3;margin-bottom:16px}
.sec-head p{font-size:17px;color:var(--c-text2);max-width:660px}
.sec-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;max-width:none}
.sec-head--row .sec-head-txt{max-width:640px}
.section--dark .sec-head p{color:rgba(234,234,228,.72)}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  background:rgba(247,246,242,.92);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  transition:box-shadow var(--t-mid) var(--ease),border-color var(--t-mid) var(--ease);
  border-bottom:1px solid transparent
}
.site-header.is-stuck{border-bottom:1px solid var(--c-line);box-shadow:0 8px 26px -20px rgba(12,22,20,.5)}
.nav-wrap{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  height:72px;gap:20px
}
.nav-left,.nav-right{display:flex;align-items:center;gap:26px}
.nav-left{justify-self:start}
.nav-right{justify-self:end}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--c-text);padding:6px 0;
  white-space:nowrap
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--c-accent);transform:scaleX(0);transform-origin:left;
  transition:transform var(--t-mid) var(--ease)
}
.nav-link:hover::after,.nav-link:focus-visible::after{transform:scaleX(1)}
.nav-link.is-active{font-weight:700}
.nav-link.is-active::after{transform:scaleX(1)}
.brand{display:inline-flex;align-items:center;gap:10px;justify-self:center}
.brand-mark{
  width:14px;height:14px;background:var(--c-accent);border-radius:4px;flex:0 0 auto;
  box-shadow:0 0 0 4px rgba(198,242,78,.22)
}
.brand-text{font-size:19px;font-weight:800;letter-spacing:-.02em;color:var(--c-ink);white-space:nowrap}
.nav-more{position:relative}
.nav-more-btn{
  display:inline-flex;align-items:center;gap:6px;background:none;border:0;padding:6px 0;
  font-size:15px;font-weight:500;cursor:pointer;position:relative
}
.nav-more-btn i{font-size:11px;transition:transform var(--t-fast) var(--ease)}
.nav-more-btn[aria-expanded="true"] i{transform:rotate(180deg)}
.nav-more-btn::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--c-accent);
  transform:scaleX(0);transform-origin:left;transition:transform var(--t-mid) var(--ease)
}
.nav-more-btn:hover::after{transform:scaleX(1)}
.nav-more-menu{
  position:absolute;right:0;top:calc(100% + 14px);min-width:230px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-m);
  box-shadow:var(--sh-card);padding:8px;opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity var(--t-fast) var(--ease),transform var(--t-fast) var(--ease),visibility var(--t-fast)
}
.nav-more-menu.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.nav-more-menu a{display:block;padding:11px 14px;border-radius:var(--r-s);font-size:15px}
.nav-more-menu a:hover{background:var(--c-bg);color:var(--c-primary)}
.nav-toggle{
  display:none;position:absolute;right:18px;top:50%;transform:translateY(-50%);
  width:44px;height:44px;border:0;background:transparent;cursor:pointer;
  flex-direction:column;justify-content:center;align-items:center;gap:5px
}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform var(--t-mid) var(--ease),opacity var(--t-fast)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-menu{
  display:none;position:fixed;inset:60px 0 0 0;background:var(--c-bg);z-index:110;
  padding:26px 24px 40px;overflow-y:auto
}
.mobile-menu.is-open{display:block}
.mobile-menu a{display:block;font-size:18px;font-weight:600;padding:16px 0;border-bottom:1px solid var(--c-line)}
.mobile-menu .m-cta{margin-top:28px}
@media (max-width:1023px){
  .nav-wrap{height:60px;grid-template-columns:1fr auto 1fr}
  .nav-left,.nav-right{display:none}
  .nav-toggle{display:flex;right:12px}
  .brand-text{font-size:17px}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:48px;padding:0 28px;border-radius:var(--r-m);border:1.5px solid transparent;
  font-size:16px;font-weight:700;cursor:pointer;text-align:center;line-height:1;
  transition:transform var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease),background var(--t-fast) var(--ease),color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease)
}
.btn i{font-size:13px;transition:transform var(--t-fast) var(--ease)}
.btn:hover i{transform:translateX(4px)}
.btn-primary{background:var(--c-accent);color:var(--c-ink)}
.btn-primary:hover{background:#d3f96b;color:var(--c-ink);transform:translateY(-2px);box-shadow:0 12px 26px -12px rgba(12,22,20,.4)}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-ghost:hover{background:rgba(15,59,51,.08);color:var(--c-primary);transform:translateY(-2px)}
.btn-ghost--dark{border-color:rgba(234,234,228,.55);color:var(--c-on-dark)}
.btn-ghost--dark:hover{background:rgba(234,234,228,.12);color:#fff}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.5;cursor:not-allowed;transform:none}
.link-text{
  display:inline-flex;align-items:center;gap:8px;font-weight:700;color:var(--c-primary);
  font-size:15px;position:relative;padding-left:14px
}
.link-text::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:16px;background:var(--c-accent);border-radius:2px}
.link-text i{font-size:12px;transition:transform var(--t-fast) var(--ease)}
.link-text:hover i{transform:translateX(4px)}

/* ---------- Hero ---------- */
.hero{
  position:relative;padding:150px 0 96px;overflow:hidden;
  background:linear-gradient(180deg,rgba(8,33,28,.86),rgba(8,33,28,.94)),url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  color:var(--c-on-dark)
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.06;
  background-image:linear-gradient(rgba(255,255,255,.9) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:64px 64px
}
.hero .container{position:relative;z-index:2}
.hero-copy h1{
  font-size:clamp(32px,4.4vw,52px);line-height:1.16;font-weight:800;letter-spacing:-.02em;
  color:#fff;margin-bottom:20px
}
.hero-sub{font-size:19px;line-height:1.8;color:rgba(234,234,228,.82);max-width:520px;margin-bottom:30px}
.hero-tag{
  display:inline-flex;align-items:center;gap:9px;font-size:13px;font-family:var(--font-num);
  letter-spacing:.08em;color:var(--c-accent);border:1px solid rgba(198,242,78,.4);
  border-radius:var(--r-pill);padding:7px 15px;margin-bottom:24px;font-weight:600
}
.hero-tag span.dot{width:7px;height:7px;border-radius:50%;background:var(--c-accent);display:block}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:22px}
.hero-note{font-size:14px;color:rgba(234,234,228,.62);max-width:520px;border-left:2px solid rgba(198,242,78,.45);padding-left:14px;line-height:1.75}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:var(--r-l);
  border:1px solid rgba(198,242,78,.22);box-shadow:0 30px 70px -30px rgba(0,0,0,.75)
}
.hero-media .float-card{
  position:absolute;left:-14px;bottom:-22px;background:var(--c-surface);color:var(--c-text);
  border-radius:var(--r-m);padding:16px 20px;box-shadow:var(--sh-card);border:1px solid var(--c-line);
  min-width:200px
}
.float-card .fc-num{font-family:var(--font-num);font-size:30px;font-weight:800;color:var(--c-primary);font-variant-numeric:tabular-nums;line-height:1.1}
.float-card .fc-label{font-size:13px;color:var(--c-text2);margin-top:4px}
.scroll-hint{
  position:absolute;left:24px;bottom:26px;z-index:3;display:flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.16em;color:rgba(234,234,228,.55);font-family:var(--font-num)
}
.scroll-hint .line{width:1px;height:38px;background:linear-gradient(180deg,rgba(198,242,78,.9),transparent);animation:scrollLine 2.4s var(--ease) infinite}
@keyframes scrollLine{0%{opacity:.2;transform:scaleY(.4)}50%{opacity:1;transform:scaleY(1)}100%{opacity:.2;transform:scaleY(.4)}}
@media (max-width:1023px){
  .hero{padding:118px 0 72px}
  .hero-media{margin-top:42px}
  .hero-media .float-card{position:static;margin-top:16px;display:inline-block}
  .scroll-hint{display:none}
}

/* ---------- 更新条 ---------- */
.update-bar{background:var(--c-primary);color:var(--c-on-dark);padding:26px 0}
.update-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.update-item{border-left:2px solid rgba(198,242,78,.5);padding-left:16px}
.update-item .u-num{font-family:var(--font-num);font-size:28px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--c-accent);line-height:1.2}
.update-item .u-label{font-size:14px;color:rgba(234,234,228,.78);margin-top:2px}
@media (max-width:767px){
  .update-grid{grid-template-columns:repeat(2,1fr);gap:18px}
  .update-item .u-num{font-size:22px}
}

/* ---------- 步骤条 ---------- */
.steps{position:relative;padding-top:18px}
.steps-line{position:absolute;left:0;right:0;top:46px;height:1px;background:var(--c-line)}
.steps-grid{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.step-node .s-num{
  width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:var(--c-surface);border:2px solid var(--c-accent2);color:var(--c-primary);
  font-family:var(--font-num);font-size:20px;font-weight:800;margin-bottom:22px;
  position:relative;z-index:2;font-variant-numeric:tabular-nums
}
.step-node h3{font-size:19px;font-weight:700;margin-bottom:10px}
.step-node p{font-size:15px;color:var(--c-text2);line-height:1.85;max-width:320px}
.step-arrow{position:absolute;top:36px;font-size:15px;color:var(--c-accent2)}
@media (max-width:767px){
  .steps-line{left:18px;right:auto;top:0;bottom:0;width:1px;height:auto}
  .steps-grid{grid-template-columns:1fr;gap:34px;padding-left:52px}
  .step-node{position:relative}
  .step-node .s-num{width:38px;height:38px;font-size:15px;position:absolute;left:-52px;top:0;margin:0}
  .step-arrow{display:none}
}

/* ---------- 路径卡片 ---------- */
.path-card{
  display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-l);overflow:hidden;height:100%;
  transition:transform var(--t-mid) var(--ease),box-shadow var(--t-mid) var(--ease),border-color var(--t-mid) var(--ease)
}
.path-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:#d6d2c6}
.path-media{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--c-surface2)}
.path-media img{width:100%;height:100%;object-fit:cover;transition:transform var(--t-slow) var(--ease)}
.path-card:hover .path-media img{transform:scale(1.04)}
.path-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,33,28,0) 40%,rgba(8,33,28,.55));opacity:.9;transition:opacity var(--t-mid) var(--ease)}
.path-card:hover .path-media::after{opacity:1}
.path-idx{
  position:absolute;left:16px;top:16px;z-index:2;background:var(--c-accent);color:var(--c-ink);
  font-family:var(--font-num);font-weight:800;font-size:13px;border-radius:var(--r-pill);padding:4px 12px
}
.path-body{padding:24px 22px 26px;display:flex;flex-direction:column;flex:1}
.path-body h3{font-size:19px;font-weight:700;margin-bottom:10px}
.path-body p{font-size:15px;color:var(--c-text2);line-height:1.85;margin-bottom:18px}
.path-body .link-text{margin-top:auto}

/* ---------- 场景错落栅格 ---------- */
.scene-card{
  position:relative;border-radius:var(--r-l);overflow:hidden;border:1px solid var(--c-line);
  background:var(--c-surface);display:flex;flex-direction:column;
  transition:transform var(--t-mid) var(--ease),box-shadow var(--t-mid) var(--ease)
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover)}
.scene-card img{width:100%;object-fit:cover;transition:transform var(--t-slow) var(--ease)}
.scene-card:hover img{transform:scale(1.04)}
.scene-card--big img{aspect-ratio:16/9}
.scene-card--small img{aspect-ratio:16/9}
.scene-body{padding:22px;display:flex;flex-direction:column;gap:12px}
.scene-body h3{font-size:19px;font-weight:700}
.scene-body p{font-size:15px;color:var(--c-text2);line-height:1.85;margin:0}
.tag-pill{
  display:inline-block;font-size:13px;font-weight:600;color:var(--c-primary);
  background:var(--c-surface2);border-radius:var(--r-pill);padding:5px 13px;width:fit-content
}
.scene-metric{display:flex;align-items:baseline;gap:8px;font-family:var(--font-num);font-variant-numeric:tabular-nums}
.scene-metric .m-num{font-size:32px;font-weight:800;color:var(--c-accent2);line-height:1}
.scene-metric .m-label{font-size:14px;color:var(--c-text3);font-family:var(--font-cn)}
.scene-stack{display:flex;flex-direction:column;gap:24px}

/* ---------- 最新信息 ---------- */
.news-list{border-top:1px solid var(--c-line)}
.news-row{
  display:grid;grid-template-columns:112px 1fr auto;gap:22px;align-items:center;
  padding:22px 10px;border-bottom:1px solid var(--c-line);
  transition:background var(--t-fast) var(--ease),padding var(--t-fast) var(--ease)
}
.news-row:hover{background:var(--c-surface);padding-left:16px;padding-right:16px}
.news-thumb{
  width:112px;aspect-ratio:4/3;border-radius:var(--r-m);overflow:hidden;background:var(--c-surface2);
  display:flex;align-items:center;justify-content:center;color:var(--c-text3);font-size:20px
}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-title{font-size:18px;font-weight:600;line-height:1.55;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-desc{font-size:15px;color:var(--c-text2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin:0 0 10px}
.news-meta{display:flex;align-items:center;gap:12px;font-size:14px;color:var(--c-text3)}
.news-meta .badge{font-size:13px;font-weight:600;color:var(--c-primary);background:var(--c-surface2);border-radius:var(--r-pill);padding:3px 11px}
.news-arrow{color:var(--c-text3);transition:transform var(--t-fast) var(--ease),color var(--t-fast) var(--ease)}
.news-row:hover .news-arrow{transform:translateX(4px);color:var(--c-primary)}
.news-empty{padding:34px 10px;color:var(--c-text3);font-size:15px;border-bottom:1px solid var(--c-line)}
@media (max-width:767px){
  .news-row{grid-template-columns:1fr;gap:14px;padding:20px 0}
  .news-row:hover{padding-left:0;padding-right:0;background:transparent}
  .news-thumb{width:100%;aspect-ratio:16/9}
  .news-arrow{display:none}
}

/* ---------- FAQ ---------- */
.faq-wrap{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);padding:10px 26px;box-shadow:var(--sh-card)}
.faq-accordion{background:transparent;border:0;margin:0}
.faq-accordion .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--c-line)}
.faq-accordion .accordion-item:last-child{border-bottom:0}
.faq-accordion .accordion-title{
  background:transparent;border:0;padding:22px 46px 22px 0;font-size:17px;font-weight:600;
  color:var(--c-text);line-height:1.6;position:relative;transition:color var(--t-fast) var(--ease)
}
.faq-accordion .accordion-title:hover{color:var(--c-primary)}
.faq-accordion .accordion-title::before{
  content:"+";position:absolute;right:8px;top:20px;left:auto;margin:0;
  font-size:26px;font-weight:400;line-height:1;color:var(--c-primary);
  transition:transform var(--t-mid) var(--ease),color var(--t-fast) var(--ease)
}
.faq-accordion .accordion-item.is-active .accordion-title::before{transform:rotate(45deg);color:var(--c-accent2)}
.faq-accordion .accordion-content{
  display:none;background:transparent;border:0;padding:0 46px 22px 0;color:var(--c-text2);
  font-size:15px;line-height:1.85;max-width:720px
}
.faq-accordion .accordion-content p{margin-bottom:10px}
@media (max-width:767px){
  .faq-wrap{padding:6px 18px}
  .faq-accordion .accordion-title{font-size:16px;padding:18px 40px 18px 0}
  .faq-accordion .accordion-content{padding-right:12px}
}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;border-radius:var(--r-l);overflow:hidden;color:var(--c-on-dark);
  background:linear-gradient(180deg,rgba(12,22,20,.88),rgba(12,22,20,.94)),url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  padding:64px 56px
}
.cta-panel::before,.cta-panel::after{content:"";position:absolute;width:64px;height:64px;pointer-events:none}
.cta-panel::before{left:22px;top:22px;border-left:2px solid var(--c-accent);border-top:2px solid var(--c-accent);border-radius:6px 0 0 0}
.cta-panel::after{right:22px;bottom:22px;border-right:2px solid var(--c-accent);border-bottom:2px solid var(--c-accent);border-radius:0 0 6px 0}
.cta-panel h2{font-size:clamp(24px,3vw,30px);font-weight:700;color:#fff;margin-bottom:14px;line-height:1.35}
.cta-panel .cta-lead{color:rgba(234,234,228,.78);font-size:16px;max-width:440px;margin-bottom:24px}
.cta-points li{display:flex;gap:11px;align-items:flex-start;font-size:15px;color:rgba(234,234,228,.86);margin-bottom:12px;line-height:1.7}
.cta-points li::before{content:"";width:8px;height:8px;background:var(--c-accent);border-radius:2px;margin-top:8px;flex:0 0 auto}
.form-card{background:rgba(247,246,242,.97);border-radius:var(--r-m);padding:28px;border:1px solid rgba(198,242,78,.25)}
.form-card .field{margin-bottom:18px}
.form-card label{display:block;font-size:13px;font-weight:600;color:var(--c-text2);margin-bottom:7px}
.form-card input,.form-card textarea{
  width:100%;background:var(--c-bg);border:1px solid var(--c-line);border-radius:var(--r-s);
  padding:0 14px;height:48px;font-size:15px;color:var(--c-text);
  transition:border-color var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease)
}
.form-card textarea{height:96px;padding:12px 14px;line-height:1.7;resize:vertical}
.form-card input:focus,.form-card textarea:focus{
  outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(198,242,78,.35)
}
.form-card .btn{width:100%}
.form-hint{font-size:13px;color:var(--c-text3);margin-top:12px;line-height:1.7}
.form-result{display:none;margin-top:14px;font-size:14px;color:var(--c-primary);font-weight:600}
.form-result.is-show{display:block}
@media (max-width:1023px){
  .cta-panel{padding:40px 24px}
  .cta-panel::before,.cta-panel::after{width:40px;height:40px}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:var(--c-on-dark);padding:72px 0 0;border-top:1px solid rgba(198,242,78,.18)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:52px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-text{color:#fff;font-size:18px;font-weight:800}
.footer-desc{font-size:15px;color:rgba(234,234,228,.68);line-height:1.85;max-width:320px}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px;letter-spacing:.02em}
.footer-col li{margin-bottom:11px}
.footer-col a{font-size:14px;color:rgba(234,234,228,.72);line-height:1.6}
.footer-col a:hover{color:var(--c-accent);text-decoration:underline;text-underline-offset:4px}
.footer-bottom{
  border-top:1px solid rgba(234,234,228,.12);padding:22px 0;display:flex;
  align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(234,234,228,.55)
}
.footer-bottom a{color:rgba(234,234,228,.65)}
.footer-bottom a:hover{color:var(--c-accent)}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:519px){
  .footer-grid{grid-template-columns:1fr}
}

/* ---------- 入场动画 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity var(--t-slow) var(--ease),transform var(--t-slow) var(--ease)}
.reveal.is-in{opacity:1;transform:none}
.reveal[data-delay="1"]{transition-delay:60ms}
.reveal[data-delay="2"]{transition-delay:120ms}
.reveal[data-delay="3"]{transition-delay:180ms}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}
@media (max-width:639px){
  .section{padding:64px 0}
  .section--tight{padding:52px 0}
  .container{padding:0 18px}
  body{font-size:16px}
}

/* roulang page: article */
:root{
  --c-ink:#0C1614;
  --c-primary:#0F3B33;
  --c-primary-deep:#08211C;
  --c-accent:#C6F24E;
  --c-accent2:#2FB59A;
  --c-bg:#F7F6F2;
  --c-surface:#FFFFFF;
  --c-surface2:#EFEDE6;
  --c-line:#E3E0D8;
  --c-text:#1B1F1E;
  --c-text2:#5B6663;
  --c-text3:#8B948F;
  --c-on-dark:#EAEAE4;
  --r-s:8px;
  --r-m:12px;
  --r-l:18px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(12,22,20,.06),0 14px 34px -16px rgba(12,22,20,.18);
  --shadow-2:0 18px 42px -20px rgba(12,22,20,.30);
  --t-fast:160ms;
  --t-mid:260ms;
  --t-slow:520ms;
  --ease:cubic-bezier(.22,.7,.24,1);
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter","SF Pro Display","Segoe UI",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
body.menu-open{overflow:hidden;}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-primary);text-decoration:none;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
h1,h2,h3,h4{margin:0;color:var(--c-ink);letter-spacing:-.01em;}
p{margin:0 0 18px;}
ul,ol{margin:0 0 18px;padding-left:1.15em;}
button{font-family:inherit;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--c-ink);color:var(--c-on-dark);
  padding:10px 18px;border-radius:0 0 var(--r-s) 0;font-size:14px;
}
.skip-link:focus{left:0;}
.nums{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ============ 阅读进度 ============ */
.read-progress{position:fixed;top:0;left:0;height:2px;width:0;background:var(--c-accent);z-index:120;transition:width 90ms linear;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(247,246,242,.92);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color var(--t-mid) var(--ease),box-shadow var(--t-mid) var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:0 10px 28px -22px rgba(12,22,20,.55);}
.nav-wrap{position:relative;display:flex;align-items:center;justify-content:space-between;gap:16px;height:72px;}
.nav-left,.nav-right{display:flex;align-items:center;gap:4px;flex:1;}
.nav-right{justify-content:flex-end;}
.nav-link{
  position:relative;display:inline-block;
  font-size:15px;font-weight:600;color:var(--c-text2);
  padding:8px 10px;border-radius:var(--r-s);
  transition:color var(--t-fast) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:10px;right:10px;bottom:1px;height:2px;
  background:var(--c-accent);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform var(--t-mid) var(--ease);
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-ink);}
.nav-link.is-active::after{transform:scaleX(1);}
.brand{
  position:absolute;left:50%;transform:translateX(-50%);
  display:inline-flex;align-items:center;gap:10px;
}
.brand-mark{
  width:14px;height:14px;border-radius:4px;background:var(--c-accent);
  box-shadow:0 0 0 3px rgba(198,242,78,.24);
  flex:0 0 auto;
}
.brand-text{font-weight:800;font-size:17px;color:var(--c-ink);letter-spacing:-.02em;white-space:nowrap;}
.nav-more{position:relative;}
.nav-more-btn{
  display:inline-flex;align-items:center;gap:6px;
  background:transparent;border:0;cursor:pointer;
  font-size:15px;font-weight:600;color:var(--c-text2);
  padding:8px 10px;border-radius:var(--r-s);
  transition:color var(--t-fast) var(--ease);
}
.nav-more-btn:hover{color:var(--c-primary);}
.nav-more-btn i{font-size:11px;transition:transform var(--t-mid) var(--ease);}
.nav-more-btn[aria-expanded="true"] i{transform:rotate(180deg);}
.nav-more-menu{
  position:absolute;right:0;top:calc(100% + 10px);
  min-width:230px;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-m);
  box-shadow:var(--shadow-1);padding:8px;
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity var(--t-fast) var(--ease),transform var(--t-fast) var(--ease),visibility var(--t-fast);
}
.nav-more-menu.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.nav-more-menu a{
  display:block;padding:10px 14px;border-radius:var(--r-s);
  font-size:14px;font-weight:600;color:var(--c-text2);
  transition:background-color var(--t-fast) var(--ease),color var(--t-fast) var(--ease);
}
.nav-more-menu a:hover{background:var(--c-bg);color:var(--c-primary);}
.nav-toggle{
  display:none;position:relative;z-index:130;
  width:44px;height:44px;padding:0;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-s);
  cursor:pointer;
}
.nav-toggle span{display:block;width:20px;height:2px;margin:4px auto;background:var(--c-ink);border-radius:2px;transition:transform var(--t-mid) var(--ease),opacity var(--t-fast) var(--ease);}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.mobile-menu{
  display:none;position:fixed;inset:0;z-index:110;
  background:var(--c-bg);padding:84px 24px 32px;overflow-y:auto;
}
.mobile-menu.is-open{display:block;}
.mobile-menu a{
  display:block;font-size:18px;font-weight:600;color:var(--c-ink);
  padding:16px 0;border-bottom:1px solid var(--c-line);
}
.mobile-menu a:hover{color:var(--c-primary);}
.mobile-menu .m-cta{
  margin-top:26px;display:inline-flex;border-bottom:0;
  font-size:16px;color:var(--c-ink);
}

/* ============ 通用按钮 / 标签 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-m);
  font-size:15px;font-weight:700;line-height:1;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease),
             filter var(--t-fast) var(--ease),background-color var(--t-fast) var(--ease),
             color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease);
}
.btn-primary{background:var(--c-accent);color:var(--c-ink);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 28px -14px rgba(12,22,20,.45);filter:brightness(1.04);}
.btn-outline{border-color:var(--c-primary);color:var(--c-primary);background:transparent;}
.btn-outline:hover{background:rgba(15,59,51,.08);transform:translateY(-2px);}
.btn-ghost{color:var(--c-primary);padding:0;height:auto;}
.btn-text-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:700;color:var(--c-primary);
  border-left:2px solid var(--c-accent);padding-left:10px;
}
.btn-text-link i{transition:transform var(--t-fast) var(--ease);}
.btn-text-link:hover i{transform:translateX(4px);}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;color:var(--c-primary);
  background:var(--c-surface2);border-radius:var(--r-pill);
  padding:4px 12px;line-height:1.6;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--c-accent2);text-transform:uppercase;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--c-accent2);border-radius:2px;}
.section{padding:80px 0;}
.section-title{font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.3;margin:14px 0 12px;}
.section-lead{font-size:16px;color:var(--c-text2);max-width:680px;margin:0;}
.grid-gap{row-gap:24px;}

/* ============ 文章头部 ============ */
.article-top{padding:26px 0 0;}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--c-text3);
}
.crumb a{color:var(--c-text3);}
.crumb a:hover{color:var(--c-primary);text-decoration:underline;}
.crumb .sep{color:#C9C6BE;}
.crumb .now{color:var(--c-text2);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-head{padding:30px 0 26px;border-bottom:1px solid var(--c-line);max-width:900px;}
.article-head h1{
  font-size:clamp(27px,3.4vw,42px);
  line-height:1.24;font-weight:800;letter-spacing:-.02em;
  margin:16px 0 0;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;
  margin-top:20px;font-size:14px;color:var(--c-text3);
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#CFCCC4;}
.meta-row time{font-family:var(--font-num);letter-spacing:.01em;}

/* ============ 正文 ============ */
.article-layout{max-width:780px;margin:0 auto;padding:44px 0 0;}
.article-body{font-size:17px;line-height:1.9;color:var(--c-text);}
.article-body p{margin:0 0 20px;}
.article-body h2{
  position:relative;font-size:26px;font-weight:700;line-height:1.36;
  margin:42px 0 16px;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.26em;bottom:.26em;width:3px;
  background:var(--c-accent);border-radius:2px;
}
.article-body h3{font-size:20px;font-weight:600;margin:28px 0 12px;}
.article-body ul,.article-body ol{padding-left:1.2em;margin:0 0 20px;}
.article-body li{margin-bottom:8px;}
.article-body ul li::marker{color:var(--c-accent2);}
.article-body ol li::marker{color:var(--c-accent2);font-weight:700;}
.article-body blockquote{
  margin:24px 0;padding:16px 22px;
  border-left:3px solid var(--c-primary);background:var(--c-bg);
  border-radius:0 var(--r-s) var(--r-s) 0;
  font-style:italic;color:var(--c-text2);
}
.article-body img{border-radius:var(--r-m);margin:24px auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{
  font-size:13px;color:var(--c-text3);text-align:center;margin-top:10px;
}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:22px 0;}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:10px 14px;text-align:left;}
.article-body th{background:var(--c-surface2);font-weight:600;color:var(--c-ink);}
.article-body tbody tr:hover td{background:var(--c-bg);}
.article-body pre{
  background:var(--c-ink);color:var(--c-on-dark);
  padding:18px;border-radius:var(--r-m);overflow-x:auto;
  font-size:14px;line-height:1.7;margin:22px 0;
}
.article-body code{
  font-family:"JetBrains Mono",Consolas,Menlo,monospace;
  font-size:.92em;
}
.article-body p code,.article-body li code{
  background:var(--c-surface2);color:var(--c-primary);
  padding:2px 6px;border-radius:4px;
}
.article-body a{
  color:var(--c-primary);
  text-decoration:underline;
  text-decoration-color:rgba(15,59,51,.35);
  text-underline-offset:3px;
}
.article-body a:hover{text-decoration-color:var(--c-accent2);}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:36px 0;}
.empty-state{
  padding:56px 28px;text-align:center;
  background:var(--c-surface);border:1px dashed var(--c-line);border-radius:var(--r-l);
}
.empty-state h2{font-size:22px;font-weight:700;margin-bottom:10px;}
.empty-state p{color:var(--c-text2);margin-bottom:24px;}

/* ============ 文末操作 ============ */
.article-foot{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:18px;margin-top:52px;padding-top:28px;border-top:1px solid var(--c-line);
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.back-links{display:flex;flex-wrap:wrap;gap:22px;}

/* ============ 图文提示区 ============ */
.help-section{background:var(--c-surface2);}
.help-figure{
  border-radius:var(--r-l);overflow:hidden;
  border:1px solid var(--c-line);background:var(--c-surface);
  box-shadow:var(--shadow-1);
}
.help-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0;}
.tip-list{list-style:none;padding:0;margin:24px 0 0;}
.tip-list li{
  position:relative;padding-left:22px;margin-bottom:16px;
  font-size:16px;color:var(--c-text2);line-height:1.85;
}
.tip-list li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:8px;height:8px;border-radius:2px;background:var(--c-accent2);
}
.tip-list strong{color:var(--c-ink);font-weight:700;}

/* ============ 分类入口 ============ */
.entry-grid{display:grid;gap:20px;grid-template-columns:1fr;}
.entry-card{
  display:flex;flex-direction:column;gap:10px;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-l);padding:24px;
  color:var(--c-text);
  transition:transform var(--t-mid) var(--ease),box-shadow var(--t-mid) var(--ease),border-color var(--t-mid) var(--ease);
}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-1);border-color:#D8D4C9;}
.entry-card h3{font-size:18px;font-weight:700;line-height:1.45;}
.entry-card p{font-size:14px;color:var(--c-text2);margin:0;line-height:1.8;}
.entry-card .entry-more{
  margin-top:auto;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--c-primary);
}
.entry-card .entry-more i{transition:transform var(--t-fast) var(--ease);}
.entry-card:hover .entry-more i{transform:translateX(4px);}
.entry-num{
  font-family:var(--font-num);font-size:14px;font-weight:700;
  color:var(--c-accent2);letter-spacing:.06em;
}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  color:var(--c-on-dark);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:var(--c-primary-deep);opacity:.88;
}
.cta-inner{position:relative;z-index:2;padding:72px 0;}
.cta-band h2{color:#fff;font-size:clamp(24px,2.8vw,34px);font-weight:800;line-height:1.28;}
.cta-band p{color:rgba(234,234,228,.82);font-size:16px;max-width:560px;margin:14px 0 28px;}
.cta-points{list-style:none;padding:0;margin:0;display:grid;gap:12px;}
.cta-points li{position:relative;padding-left:20px;font-size:15px;color:rgba(234,234,228,.88);}
.cta-points li::before{
  content:"";position:absolute;left:0;top:.66em;
  width:7px;height:7px;background:var(--c-accent);border-radius:2px;
}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-ink);color:var(--c-on-dark);padding:64px 0 26px;border-top:1px solid rgba(198,242,78,.18);}
.footer-grid{display:grid;gap:36px;grid-template-columns:1fr;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-text{color:var(--c-on-dark);}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(234,234,228,.68);max-width:340px;margin:0;}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;letter-spacing:.04em;margin-bottom:16px;}
.footer-col ul{list-style:none;padding:0;margin:0;display:grid;gap:10px;}
.footer-col a,.footer-col li{font-size:14px;color:rgba(234,234,228,.72);}
.footer-col a{transition:color var(--t-fast) var(--ease);}
.footer-col a:hover{color:var(--c-accent);text-decoration:underline;}
.footer-bottom{
  margin-top:44px;padding-top:20px;
  border-top:1px solid rgba(234,234,228,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(234,234,228,.55);
}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity var(--t-slow) var(--ease),transform var(--t-slow) var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;}
  .reveal{opacity:1 !important;transform:none !important;}
  html{scroll-behavior:auto;}
}

/* ============ 断点 ============ */
@media (min-width:640px){
  .entry-grid{grid-template-columns:1fr 1fr;}
}
@media (min-width:768px){
  .container{padding:0 32px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;}
  .section{padding:96px 0;}
}
@media (min-width:1024px){
  .entry-grid{grid-template-columns:repeat(4,1fr);}
  .article-layout{padding-top:52px;}
  .cta-inner{padding:88px 0;}
}
@media (max-width:1023px){
  .nav-left,.nav-right{display:none;}
  .nav-toggle{display:block;}
  .nav-wrap{height:60px;}
  .brand{position:absolute;left:50%;transform:translateX(-50%);}
}
@media (max-width:767px){
  body{font-size:16px;}
  .section{padding:56px 0;}
  .article-head h1{font-size:clamp(24px,6.4vw,32px);}
  .article-body h2{font-size:22px;margin-top:34px;}
  .article-body h3{font-size:18px;}
  .cta-inner{padding:52px 0;}
  .article-foot{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .container{padding:0 18px;}
  .brand-text{font-size:15px;}
  .brand{gap:8px;}
  .brand-mark{width:12px;height:12px;}
  .crumb .now{max-width:34ch;}
}

/* roulang page: category1 */
:root{
  --c-ink:#0C1614;
  --c-primary:#0F3B33;
  --c-primary-deep:#08211C;
  --c-accent:#C6F24E;
  --c-accent2:#2FB59A;
  --c-bg:#F7F6F2;
  --c-surface:#FFFFFF;
  --c-surface2:#EFEDE6;
  --c-line:#E3E0D8;
  --c-text:#1B1F1E;
  --c-text2:#5B6663;
  --c-text3:#8B948F;
  --c-on-dark:#EAEAE4;
  --r-s:8px;
  --r-m:12px;
  --r-l:18px;
  --r-pill:999px;
  --sh-card:0 1px 2px rgba(12,22,20,.06),0 14px 34px -16px rgba(12,22,20,.18);
  --sh-hover:0 2px 4px rgba(12,22,20,.08),0 22px 46px -18px rgba(12,22,20,.26);
  --t-fast:160ms;
  --t-mid:260ms;
  --t-slow:520ms;
  --ease:cubic-bezier(.22,.7,.24,1);
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:"Helvetica Neue",Arial,"Segoe UI",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--r-m);}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t-fast) var(--ease);}
a:hover{color:var(--c-accent2);}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4,h5,h6{font-family:var(--font-cn);color:var(--c-text);line-height:1.25;margin:0 0 16px;font-weight:700;}
p{margin:0 0 20px;}
ul,ol{margin:0 0 20px;padding-left:0;list-style:none;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:2000;
  background:var(--c-accent);color:var(--c-ink);font-weight:700;
  padding:12px 20px;border-radius:0 0 var(--r-m) 0;
}
.skip-link:focus{left:0;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(247,246,242,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color var(--t-mid) var(--ease),box-shadow var(--t-mid) var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:0 6px 24px -18px rgba(12,22,20,.35);}
.nav-wrap{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  height:72px;
  gap:16px;
}
.nav-left,.nav-right{display:flex;align-items:center;gap:6px;}
.nav-left{justify-content:flex-start;}
.nav-right{justify-content:flex-end;}
.brand{
  display:flex;align-items:center;gap:10px;
  font-size:19px;font-weight:800;letter-spacing:-.01em;
  color:var(--c-ink);
  white-space:nowrap;
}
.brand:hover{color:var(--c-ink);}
.brand-mark{
  width:14px;height:14px;border-radius:4px;
  background:var(--c-accent);
  box-shadow:0 0 0 1px rgba(12,22,20,.12) inset;
  flex:none;
}
.brand-text{line-height:1;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:9px 12px;
  font-size:15px;
  font-weight:600;
  color:var(--c-text2);
  border-radius:var(--r-s);
}
.nav-link::after{
  content:"";
  position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--c-accent);
  transform:scaleX(0);transform-origin:left;
  transition:transform var(--t-mid) var(--ease);
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-primary);font-weight:700;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-more{position:relative;}
.nav-more-btn{
  display:inline-flex;align-items:center;gap:6px;
  background:none;border:0;cursor:pointer;
  padding:9px 12px;font-size:15px;font-weight:600;color:var(--c-text2);
  border-radius:var(--r-s);
  transition:color var(--t-fast) var(--ease);
}
.nav-more-btn:hover{color:var(--c-primary);}
.nav-more-btn i{font-size:12px;transition:transform var(--t-fast) var(--ease);}
.nav-more-btn[aria-expanded="true"] i{transform:rotate(180deg);}
.nav-more-menu{
  position:absolute;right:0;top:calc(100% + 10px);
  min-width:230px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-m);
  box-shadow:var(--sh-card);
  padding:8px;
  display:none;
}
.nav-more-menu.is-open{display:block;}
.nav-more-menu a{
  display:block;padding:10px 12px;border-radius:var(--r-s);
  font-size:15px;color:var(--c-text2);font-weight:600;
}
.nav-more-menu a:hover{background:var(--c-bg);color:var(--c-primary);}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;padding:0 10px;
  background:transparent;border:1px solid var(--c-line);border-radius:var(--r-s);
  cursor:pointer;
}
.nav-toggle span{display:block;height:2px;width:100%;background:var(--c-ink);border-radius:2px;transition:transform var(--t-mid) var(--ease),opacity var(--t-fast) var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-menu{
  display:none;
  border-top:1px solid var(--c-line);
  background:var(--c-surface);
  padding:12px 24px 24px;
}
.mobile-menu.is-open{display:block;}
.mobile-menu a{
  display:block;
  padding:14px 4px;
  font-size:17px;
  font-weight:600;
  color:var(--c-text);
  border-bottom:1px solid var(--c-line);
}
.mobile-menu a:hover{color:var(--c-primary);}
.mobile-menu .m-cta{
  margin-top:20px;border-bottom:0;text-align:center;
  display:block;padding:14px 20px;
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;
  border-radius:var(--r-m);
  font-size:16px;font-weight:700;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:transform var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease),background var(--t-fast) var(--ease),color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease);
}
.btn-primary{background:var(--c-accent);color:var(--c-ink);}
.btn-primary:hover{background:#d3fb61;color:var(--c-ink);transform:translateY(-2px);box-shadow:0 12px 26px -14px rgba(12,22,20,.55);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:rgba(15,59,51,.08);color:var(--c-primary);transform:translateY(-2px);}
.btn-ghost-light{background:transparent;color:var(--c-on-dark);border-color:rgba(234,234,228,.5);}
.btn-ghost-light:hover{background:rgba(234,234,228,.12);color:#fff;transform:translateY(-2px);}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;
  font-weight:700;color:var(--c-primary);
  padding-left:12px;border-left:2px solid var(--c-accent);
}
.btn-text i{font-size:12px;transition:transform var(--t-fast) var(--ease);}
.btn-text:hover i{transform:translateX(4px);}

/* ---------- hero lite ---------- */
.hero-lite{
  position:relative;
  background:var(--c-bg);
  border-bottom:1px solid var(--c-line);
  padding:44px 0 52px;
  min-height:300px;
  overflow:hidden;
}
.hero-lite::before{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(15,59,51,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(15,59,51,.055) 1px,transparent 1px);
  background-size:48px 48px;
  opacity:.7;
  pointer-events:none;
}
.hero-lite .container{position:relative;z-index:1;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--c-text3);margin-bottom:22px;
}
.breadcrumb a{color:var(--c-text3);font-weight:600;}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#c8c5bb;}
.hero-lite h1{
  font-size:clamp(30px,3.6vw,44px);
  font-weight:800;
  line-height:1.16;
  letter-spacing:-.02em;
  max-width:820px;
  margin-bottom:16px;
}
.hero-lite .lede{
  font-size:18px;
  color:var(--c-text2);
  max-width:720px;
  margin-bottom:26px;
}
.chips{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  font-size:14px;font-weight:600;color:var(--c-primary);
  transition:border-color var(--t-fast) var(--ease),transform var(--t-fast) var(--ease),background var(--t-fast) var(--ease);
}
.chip i{font-size:11px;color:var(--c-accent2);}
.chip:hover{border-color:var(--c-primary);background:#fff;color:var(--c-primary);transform:translateY(-2px);}

/* ---------- layout ---------- */
.section{padding:72px 0;}
.section-tight{padding:56px 0;}
.section-head{margin-bottom:36px;max-width:760px;}
.section-head h2{
  font-size:clamp(24px,2.6vw,30px);
  font-weight:700;
  padding-left:16px;
  border-left:3px solid var(--c-accent);
  margin-bottom:14px;
}
.section-head p{color:var(--c-text2);font-size:16px;margin:0;}
.eyebrow{
  display:inline-block;
  font-family:var(--font-num);
  font-size:13px;font-weight:700;letter-spacing:.16em;
  color:var(--c-accent2);
  text-transform:uppercase;
  margin-bottom:12px;
}

/* ---------- toc ---------- */
.toc{
  position:sticky;top:96px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-l);
  padding:20px;
  box-shadow:var(--sh-card);
}
.toc-title{
  font-size:13px;font-weight:700;letter-spacing:.1em;
  color:var(--c-text3);text-transform:uppercase;
  margin-bottom:14px;
}
.toc ul{margin:0;}
.toc li{margin-bottom:4px;}
.toc a{
  display:block;
  padding:9px 12px;
  border-radius:var(--r-s);
  font-size:14px;font-weight:600;color:var(--c-text2);
  border-left:2px solid transparent;
  transition:background var(--t-fast) var(--ease),color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease);
}
.toc a:hover{background:var(--c-bg);color:var(--c-primary);}
.toc a.is-active{background:var(--c-bg);color:var(--c-primary);border-left-color:var(--c-accent);}
.toc-note{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-text3);line-height:1.7;
}

/* ---------- doc ---------- */
.doc{max-width:100%;}
.doc h2{
  font-size:clamp(22px,2.4vw,27px);
  font-weight:700;
  margin:48px 0 18px;
  padding-left:15px;
  border-left:3px solid var(--c-accent);
  line-height:1.3;
}
.doc h2:first-child{margin-top:0;}
.doc h3{
  font-size:20px;font-weight:600;margin:34px 0 14px;
}
.doc p{color:var(--c-text);font-size:17px;line-height:1.9;}
.doc .muted{color:var(--c-text2);font-size:16px;}
.doc strong{font-weight:700;color:var(--c-ink);}
.doc ul{display:grid;gap:10px;}
.doc ul li{
  position:relative;
  padding-left:22px;
  font-size:16.5px;line-height:1.85;color:var(--c-text);
}
.doc ul li::before{
  content:"";
  position:absolute;left:0;top:13px;
  width:8px;height:8px;border-radius:2px;
  background:var(--c-accent);
}
.doc ol{padding-left:0;counter-reset:docnum;}
.doc ol li{
  position:relative;padding-left:44px;margin-bottom:14px;
  font-size:16.5px;line-height:1.85;
}
.doc ol li::before{
  counter-increment:docnum;
  content:counter(docnum,decimal-leading-zero);
  position:absolute;left:0;top:2px;
  font-family:var(--font-num);
  font-size:15px;font-weight:800;color:var(--c-accent2);
  letter-spacing:.02em;
}
.article-figure{margin:30px 0;}
.article-figure img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border:1px solid var(--c-line);
}
.article-figure figcaption{
  margin-top:10px;
  font-size:13px;color:var(--c-text3);text-align:center;
}
.callout{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-left:3px solid var(--c-primary);
  border-radius:var(--r-m);
  padding:20px 24px;
  margin:28px 0;
}
.callout p:last-child{margin-bottom:0;}
.callout .callout-title{
  font-size:15px;font-weight:700;color:var(--c-primary);margin-bottom:8px;
}
.table-wrap{
  border:1px solid var(--c-line);
  border-radius:var(--r-m);
  overflow-x:auto;
  background:var(--c-surface);
  margin:28px 0;
}
.table-wrap table{min-width:680px;font-size:15px;}
.table-wrap thead th{
  background:var(--c-surface2);
  color:var(--c-primary);
  font-weight:700;
  text-align:left;
  padding:14px 16px;
  font-size:14px;
  white-space:nowrap;
}
.table-wrap tbody td{
  padding:14px 16px;
  border-top:1px solid var(--c-line);
  color:var(--c-text2);
  vertical-align:top;
  line-height:1.75;
}
.table-wrap tbody td:first-child{color:var(--c-text);font-weight:600;white-space:nowrap;}
.table-wrap tbody tr:hover{background:var(--c-bg);}

/* ---------- cards ---------- */
.card-grid{display:grid;gap:24px;grid-template-columns:repeat(3,1fr);}
.card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-l);
  overflow:hidden;
  box-shadow:var(--sh-card);
  transition:transform var(--t-mid) var(--ease),box-shadow var(--t-mid) var(--ease);
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.card-media{position:relative;overflow:hidden;}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;transition:transform var(--t-slow) var(--ease);}
.card:hover .card-media img{transform:scale(1.04);}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;}
.badge{
  display:inline-flex;align-items:center;
  padding:4px 12px;
  background:var(--c-surface2);
  color:var(--c-primary);
  border-radius:var(--r-pill);
  font-size:13px;font-weight:700;
  margin-bottom:12px;
  align-self:flex-start;
}
.card h3{font-size:19px;font-weight:600;margin-bottom:10px;line-height:1.45;}
.card p{font-size:15px;color:var(--c-text2);line-height:1.8;margin-bottom:16px;}
.card .card-link{margin-top:auto;}

/* ---------- faq ---------- */
.faq-wrap{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-l);
  padding:8px 24px;
  box-shadow:var(--sh-card);
}
.faq-wrap .accordion{
  background:transparent;border:0;margin:0;
}
.faq-wrap .accordion-item{
  border-bottom:1px solid var(--c-line);
}
.faq-wrap .accordion-item:last-child{border-bottom:0;}
.faq-wrap .accordion-title{
  position:relative;
  display:block;
  padding:22px 52px 22px 0;
  font-size:17px;font-weight:600;color:var(--c-text);
  border:0;background:transparent;
  transition:color var(--t-fast) var(--ease);
}
.faq-wrap .accordion-title:hover{color:var(--c-primary);}
.faq-wrap .accordion-title::before{
  position:absolute;
  top:50%;right:8px;
  width:26px;height:26px;margin-top:-13px;
  display:flex;align-items:center;justify-content:center;
  content:"+";
  font-family:var(--font-num);
  font-size:20px;font-weight:400;line-height:1;color:var(--c-primary);
  border:1px solid var(--c-line);border-radius:50%;
  transition:transform var(--t-mid) var(--ease),background var(--t-mid) var(--ease),color var(--t-mid) var(--ease),border-color var(--t-mid) var(--ease);
}
.faq-wrap .accordion-item.is-active .accordion-title::before{
  content:"+";
  transform:rotate(45deg);
  background:var(--c-accent);
  border-color:var(--c-accent);
  color:var(--c-ink);
}
.faq-wrap .accordion-content{
  padding:0 60px 22px 0;
  border:0;
  font-size:15px;line-height:1.85;color:var(--c-text2);
  max-width:760px;
  background:transparent;
}
.faq-wrap .accordion-content p:last-child{margin-bottom:0;}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;
  border-radius:var(--r-l);
  overflow:hidden;
  padding:48px 44px;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  isolation:isolate;
}
.cta-band::before{
  content:"";
  position:absolute;inset:0;
  background:var(--c-ink);
  opacity:.88;
  z-index:-1;
}
.cta-band::after{
  content:"";
  position:absolute;left:28px;top:28px;
  width:54px;height:54px;
  border-left:2px solid var(--c-accent);
  border-top:2px solid var(--c-accent);
  opacity:.8;
  pointer-events:none;
}
.cta-band h2{
  color:#fff;
  font-size:clamp(22px,2.6vw,30px);
  font-weight:700;
  margin-bottom:12px;
  padding-left:0;
  border-left:0;
}
.cta-band p{color:rgba(234,234,228,.82);font-size:16px;max-width:620px;margin-bottom:24px;}
.cta-band .cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.cta-points{display:grid;gap:10px;margin:0 0 26px;}
.cta-points li{
  position:relative;padding-left:22px;
  color:rgba(234,234,228,.9);font-size:15.5px;
}
.cta-points li::before{
  content:"";position:absolute;left:0;top:11px;
  width:8px;height:8px;border-radius:2px;background:var(--c-accent);
}

/* ---------- footer ---------- */
.site-footer{
  background:var(--c-ink);
  color:var(--c-on-dark);
  padding:64px 0 0;
  margin-top:0;
  border-top:1px solid rgba(198,242,78,.18);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:18px;font-weight:800;color:#fff;letter-spacing:-.01em;
  margin-bottom:16px;
}
.footer-desc{font-size:14.5px;line-height:1.85;color:rgba(234,234,228,.72);max-width:360px;margin:0;}
.footer-col h4{
  font-size:15px;font-weight:700;color:#fff;margin-bottom:18px;
}
.footer-col ul{margin:0;display:grid;gap:11px;}
.footer-col li{font-size:14.5px;color:rgba(234,234,228,.7);line-height:1.7;}
.footer-col a{color:rgba(234,234,228,.72);}
.footer-col a:hover{color:var(--c-accent);text-decoration:underline;}
.footer-bottom{
  border-top:1px solid rgba(234,234,228,.14);
  padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13.5px;color:rgba(234,234,228,.58);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity var(--t-slow) var(--ease),transform var(--t-slow) var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-wrap{grid-template-columns:1fr auto 1fr;height:60px;}
  .nav-left,.nav-right{display:none;}
  .brand{grid-column:2;justify-self:center;font-size:17px;}
  .nav-toggle{display:flex;grid-column:3;justify-self:end;}
  .hero-lite{min-height:0;padding:36px 0 44px;}
  .hero-lite h1{font-size:clamp(26px,5vw,34px);}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .toc{position:static;margin-bottom:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 18px;}
  .section{padding:52px 0;}
  .section-tight{padding:44px 0;}
  .doc h2{margin-top:38px;font-size:22px;}
  .doc h3{font-size:18.5px;}
  .card-grid{grid-template-columns:1fr;}
  .cta-band{padding:34px 22px;}
  .cta-band::after{width:36px;height:36px;left:16px;top:16px;}
  .faq-wrap{padding:4px 16px;}
  .faq-wrap .accordion-content{padding-right:8px;}
  .hero-lite .lede{font-size:16.5px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:34px;}
  .footer-bottom{flex-direction:column;gap:6px;}
}
@media (max-width:519px){
  .chips{gap:8px;}
  .chip{font-size:13px;padding:7px 13px;}
  .brand-text{font-size:16px;}
  .doc ul li{font-size:16px;}
  .table-wrap table{min-width:560px;}
}
@media (prefers-reduced-motion:reduce){
  *,.reveal{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root{
  --c-ink:#0C1614;
  --c-primary:#0F3B33;
  --c-primary-deep:#08211C;
  --c-accent:#C6F24E;
  --c-accent2:#2FB59A;
  --c-bg:#F7F6F2;
  --c-surface:#FFFFFF;
  --c-surface2:#EFEDE6;
  --c-line:#E3E0D8;
  --c-text:#1B1F1E;
  --c-text2:#5B6663;
  --c-text3:#8B948F;
  --c-on-dark:#EAEAE4;

  --r-s:8px;
  --r-m:12px;
  --r-l:18px;
  --r-pill:999px;

  --sh-card:0 1px 2px rgba(12,22,20,.06), 0 14px 34px -16px rgba(12,22,20,.18);
  --sh-hover:0 2px 4px rgba(12,22,20,.08), 0 24px 48px -18px rgba(12,22,20,.26);

  --t-fast:160ms;
  --t-mid:260ms;
  --t-slow:520ms;
  --ease:cubic-bezier(.22,.7,.24,1);

  --nav-h:72px;

  --font-base:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --font-num:"Inter","SF Mono",ui-monospace,"Roboto Mono",system-ui,sans-serif;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding-top:var(--nav-h);
  font-family:var(--font-base);
  font-size:17px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t-fast) var(--ease);}
a:hover{color:var(--c-primary);}
button{font-family:inherit;}
h1,h2,h3,h4,h5,p,ul,ol,figure,dl,dd,dt{margin:0;padding:0;}
ul,ol{list-style:none;}
h1,h2,h3,h4{font-weight:700;line-height:1.25;letter-spacing:-.01em;color:var(--c-text);}
input,textarea,select{font-family:inherit;font-size:15px;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:999;
  background:var(--c-ink);color:var(--c-accent);
  padding:12px 20px;border-radius:0 0 var(--r-m) 0;font-size:14px;font-weight:600;
}
.skip-link:focus{left:0;color:var(--c-accent);}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:200;
  height:var(--nav-h);
  background:rgba(247,246,242,.92);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color var(--t-mid) var(--ease), box-shadow var(--t-mid) var(--ease), background var(--t-mid) var(--ease);
}
.site-header.is-scrolled{
  border-bottom-color:var(--c-line);
  box-shadow:0 10px 28px -22px rgba(12,22,20,.45);
  background:rgba(247,246,242,.96);
}
.nav-wrap{
  height:var(--nav-h);
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.nav-left,.nav-right{
  display:flex;align-items:center;gap:32px;flex:1 1 0;min-width:0;
}
.nav-right{justify-content:flex-end;}

.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-weight:800;letter-spacing:-.02em;color:var(--c-ink);
  white-space:nowrap;flex:0 0 auto;
}
.brand:hover{color:var(--c-ink);}
.brand-mark{
  width:14px;height:14px;border-radius:4px;background:var(--c-accent);
  box-shadow:0 0 0 4px rgba(198,242,78,.22);
  display:inline-block;flex:0 0 auto;
}
.brand-text{font-size:17px;line-height:1;}

.nav-link{
  position:relative;display:inline-block;
  font-size:15px;font-weight:600;color:var(--c-text2);
  padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;
  background:var(--c-accent);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform var(--t-mid) var(--ease);
}
.nav-link:hover{color:var(--c-ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-ink);}
.nav-link.is-active::after{transform:scaleX(1);}

.nav-more{position:relative;display:flex;align-items:center;}
.nav-more-btn{
  background:none;border:0;cursor:pointer;
  font-size:15px;font-weight:600;color:var(--c-text2);
  padding:6px 0;display:inline-flex;align-items:center;gap:6px;
  transition:color var(--t-fast) var(--ease);
}
.nav-more-btn:hover{color:var(--c-ink);}
.nav-more-btn i{font-size:11px;transition:transform var(--t-mid) var(--ease);}
.nav-more.is-open .nav-more-btn{color:var(--c-ink);}
.nav-more.is-open .nav-more-btn i{transform:rotate(180deg);}
.nav-more-menu{
  position:absolute;top:calc(100% + 16px);right:0;min-width:240px;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-m);box-shadow:var(--sh-card);padding:8px;
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity var(--t-mid) var(--ease), transform var(--t-mid) var(--ease), visibility var(--t-mid);
}
.nav-more.is-open .nav-more-menu{opacity:1;visibility:visible;transform:translateY(0);}
.nav-more-menu a{
  display:block;padding:10px 12px;border-radius:var(--r-s);
  font-size:14.5px;font-weight:500;color:var(--c-text);
}
.nav-more-menu a:hover{background:var(--c-surface2);color:var(--c-primary);}

.nav-toggle{
  display:none;width:42px;height:42px;border:0;background:transparent;
  cursor:pointer;padding:0;position:relative;flex:0 0 auto;
}
.nav-toggle span{
  display:block;width:20px;height:2px;margin:4px auto;
  background:var(--c-ink);border-radius:2px;
  transition:transform var(--t-mid) var(--ease), opacity var(--t-fast) var(--ease);
}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.mobile-menu{
  display:none;
  background:rgba(247,246,242,.99);
  border-top:1px solid var(--c-line);
  padding:18px 24px 28px;
  max-height:calc(100vh - var(--nav-h));
  overflow-y:auto;
}
.mobile-menu.is-open{display:block;}
.mobile-menu a{
  display:block;padding:14px 0;font-size:18px;font-weight:600;
  color:var(--c-text);border-bottom:1px solid var(--c-line);
}
.mobile-menu a:hover{color:var(--c-primary);}
.mobile-menu a.is-active{color:var(--c-primary);}
.mobile-menu .m-cta{
  margin-top:22px;border-bottom:0;display:inline-flex;
  width:auto;padding:0 28px;color:var(--c-ink);
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-m);
  font-size:15px;font-weight:700;line-height:1;
  border:1.5px solid transparent;cursor:pointer;text-decoration:none;
  transition:transform var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease),
             background var(--t-fast) var(--ease), color var(--t-fast) var(--ease),
             border-color var(--t-fast) var(--ease), filter var(--t-fast) var(--ease);
}
.btn-primary{background:var(--c-accent);color:var(--c-ink);}
.btn-primary:hover{color:var(--c-ink);transform:translateY(-2px);box-shadow:0 14px 26px -14px rgba(12,22,20,.5);filter:brightness(1.04);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary);}
.btn-ghost:hover{background:rgba(15,59,51,.08);color:var(--c-primary);transform:translateY(-2px);}
.btn-on-dark{background:transparent;border-color:rgba(234,234,228,.4);color:var(--c-on-dark);}
.btn-on-dark:hover{background:rgba(234,234,228,.1);color:var(--c-on-dark);}
.btn:disabled,.btn.is-disabled{opacity:.5;transform:none;box-shadow:none;cursor:not-allowed;}

.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14.5px;font-weight:700;color:var(--c-primary);
  border-left:2px solid var(--c-accent);padding-left:12px;
}
.link-arrow i{font-size:12px;transition:transform var(--t-mid) var(--ease);}
.link-arrow:hover{color:var(--c-primary);}
.link-arrow:hover i{transform:translateX(4px);}

/* ============ Hero-lite ============ */
.hero-lite{
  position:relative;overflow:hidden;
  background:var(--c-bg);
  padding:64px 0 68px;
  border-bottom:1px solid var(--c-line);
}
.hero-lite::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(15,59,51,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15,59,51,.055) 1px, transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(180deg, rgba(0,0,0,.9), rgba(0,0,0,.15));
  -webkit-mask-image:linear-gradient(180deg, rgba(0,0,0,.9), rgba(0,0,0,.15));
}
.hero-lite .container{position:relative;z-index:2;}
.crumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:14px;color:var(--c-text3);margin-bottom:20px;
}
.crumb a{color:var(--c-text3);}
.crumb a:hover{color:var(--c-primary);text-decoration:underline;}
.crumb .sep{color:var(--c-line);}
.crumb .now{color:var(--c-text2);}
.h1{
  font-size:clamp(30px,4.4vw,46px);
  line-height:1.15;font-weight:800;letter-spacing:-.02em;
  max-width:820px;
}
.hero-lead{
  margin-top:18px;max-width:700px;
  font-size:18px;line-height:1.8;color:var(--c-text2);
}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 18px;border-radius:var(--r-pill);
  background:var(--c-surface);border:1px solid var(--c-line);
  font-size:14px;font-weight:600;color:var(--c-primary);
  transition:background var(--t-fast) var(--ease), color var(--t-fast) var(--ease),
             border-color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}
.chip i{font-size:12px;color:var(--c-accent2);}
.chip:hover{
  background:var(--c-primary);color:var(--c-on-dark);
  border-color:var(--c-primary);transform:translateY(-2px);
}
.chip:hover i{color:var(--c-accent);}

/* ============ 通用区块 ============ */
.section{padding:96px 0;}
.section-alt{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.sec-head{max-width:760px;margin-bottom:54px;}
.sec-kicker{
  display:block;font-size:12.5px;font-weight:800;letter-spacing:.16em;
  color:var(--c-accent2);margin-bottom:14px;font-family:var(--font-num);
}
.sec-head h2{
  position:relative;padding-left:18px;
  font-size:clamp(24px,3vw,32px);line-height:1.3;font-weight:700;
}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:3px;
  border-radius:2px;background:var(--c-accent);
}
.sec-head p{margin-top:14px;font-size:16px;color:var(--c-text2);max-width:680px;}

/* ============ 流程时间线 ============ */
.timeline{position:relative;padding:8px 0;}
.tl-line{
  position:absolute;left:50%;top:0;bottom:0;width:1px;
  background:linear-gradient(180deg, rgba(227,224,216,0), var(--c-line) 6%, var(--c-line) 94%, rgba(227,224,216,0));
  transform:translateX(-50%);
}
.tl-item{
  position:relative;
  display:grid;grid-template-columns:1fr 104px 1fr;
  align-items:center;margin-bottom:36px;
}
.tl-item:last-child{margin-bottom:0;}
.tl-node{
  grid-column:2;grid-row:1;justify-self:center;
  width:56px;height:56px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--c-surface);border:1.5px solid var(--c-accent2);
  color:var(--c-primary);font-family:var(--font-num);
  font-size:19px;font-weight:800;font-variant-numeric:tabular-nums;
  z-index:2;box-shadow:0 0 0 8px var(--c-bg);
}
.tl-card{
  grid-row:1;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-l);padding:26px 30px;box-shadow:var(--sh-card);
  transition:transform var(--t-mid) var(--ease), box-shadow var(--t-mid) var(--ease), border-color var(--t-mid) var(--ease);
}
.tl-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:#D6D2C7;}
.tl-item.tl-left .tl-card{grid-column:1;}
.tl-item.tl-right .tl-card{grid-column:3;}
.tl-card h3{font-size:20px;font-weight:600;margin-bottom:12px;}
.tl-card ul{display:grid;gap:9px;}
.tl-card li{
  position:relative;padding-left:20px;
  font-size:15px;line-height:1.85;color:var(--c-text2);
}
.tl-card li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:7px;height:7px;border-radius:2px;background:var(--c-accent);
}
.tl-tag{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:var(--r-pill);
  background:var(--c-surface2);color:var(--c-primary);
  font-size:12.5px;font-weight:700;margin-bottom:14px;
}

/* ============ 表格 ============ */
.table-wrap{
  overflow-x:auto;-webkit-overflow-scrolling:touch;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-l);box-shadow:var(--sh-card);
}
.table-wrap table{
  width:100%;min-width:760px;border-collapse:collapse;
  font-size:15px;line-height:1.7;
}
.table-wrap th,.table-wrap td{
  padding:16px 20px;text-align:left;vertical-align:top;
  border-bottom:1px solid var(--c-line);
}
.table-wrap th{
  background:var(--c-surface2);color:var(--c-primary);
  font-size:13.5px;font-weight:700;white-space:nowrap;
}
.table-wrap tbody tr:nth-child(even){background:#FAF9F5;}
.table-wrap tbody tr:hover{background:var(--c-surface2);}
.table-wrap tbody tr:last-child td{border-bottom:0;}
.table-wrap td strong{font-weight:700;color:var(--c-text);}
.table-hint{margin-top:16px;font-size:13.5px;color:var(--c-text3);}

/* ============ 图片区 ============ */
.figure{margin-top:44px;}
.figure img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  border-radius:var(--r-m);border:1px solid var(--c-line);
}
.figure figcaption{
  margin-top:12px;text-align:center;
  font-size:13px;color:var(--c-text3);line-height:1.7;
}

/* ============ 卡点排查卡片 ============ */
.trouble-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;
}
.trouble-card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-l);padding:28px 26px;box-shadow:var(--sh-card);
  transition:transform var(--t-mid) var(--ease), box-shadow var(--t-mid) var(--ease), border-color var(--t-mid) var(--ease);
}
.trouble-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:#D6D2C7;}
.trouble-card .tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  background:var(--c-surface2);color:var(--c-primary);
  font-size:12.5px;font-weight:700;margin-bottom:16px;
}
.trouble-card h3{font-size:18px;font-weight:600;line-height:1.5;margin-bottom:10px;}
.trouble-card p{font-size:15px;line-height:1.85;color:var(--c-text2);}

/* ============ FAQ ============ */
.faq{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-l);overflow:hidden;box-shadow:var(--sh-card);
}
.faq-item + .faq-item{border-top:1px solid var(--c-line);}
.faq-q{
  position:relative;width:100%;display:block;
  background:none;border:0;cursor:pointer;text-align:left;
  padding:22px 68px 22px 26px;
  font-size:17px;font-weight:600;line-height:1.6;color:var(--c-text);
  transition:color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.faq-q:hover{color:var(--c-primary);background:#FCFBF8;}
.faq-q::before{
  content:"";position:absolute;right:26px;top:50%;
  width:14px;height:2px;border-radius:2px;background:var(--c-primary);
  transform:translateY(-50%);
}
.faq-q::after{
  content:"";position:absolute;right:32px;top:50%;
  width:2px;height:14px;border-radius:2px;background:var(--c-primary);
  transform:translateY(-50%);
  transition:transform var(--t-mid) var(--ease), opacity var(--t-mid) var(--ease);
}
.faq-item.is-open .faq-q::after{transform:translateY(-50%) rotate(90deg);opacity:0;}
.faq-item.is-open .faq-q{color:var(--c-primary);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height var(--t-mid) var(--ease);
}
.faq-a-inner{
  padding:0 68px 24px 26px;max-width:760px;
  font-size:15px;line-height:1.85;color:var(--c-text2);
}

/* ============ 提交条 ============ */
.apply-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-l);
  background:var(--c-ink);
  padding:44px 46px;
}
.apply-band::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.16;
}
.apply-band::after{
  content:"";position:absolute;right:-1px;bottom:-1px;width:64px;height:64px;
  border-right:3px solid var(--c-accent);border-bottom:3px solid var(--c-accent);
  border-radius:0 0 var(--r-l) 0;opacity:.85;
}
.apply-band .corner{
  position:absolute;left:-1px;top:-1px;width:64px;height:64px;
  border-left:3px solid var(--c-accent);border-top:3px solid var(--c-accent);
  border-radius:var(--r-l) 0 0 0;opacity:.85;
}
.apply-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;
}
.apply-band h2{
  color:var(--c-on-dark);font-size:clamp(22px,2.6vw,28px);line-height:1.35;
}
.apply-band p{
  margin-top:14px;color:rgba(234,234,228,.72);
  font-size:15px;line-height:1.85;max-width:460px;
}
.apply-list{margin-top:22px;display:grid;gap:10px;}
.apply-list li{
  position:relative;padding-left:20px;
  font-size:14.5px;color:rgba(234,234,228,.82);
}
.apply-list li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:7px;height:7px;border-radius:2px;background:var(--c-accent);
}
.apply-form{display:grid;gap:16px;}
.field label{
  display:block;font-size:13px;font-weight:600;
  color:rgba(234,234,228,.72);margin-bottom:8px;
}
.field input{
  width:100%;height:48px;padding:0 16px;
  border-radius:var(--r-m);
  border:1px solid rgba(234,234,228,.22);
  background:rgba(247,246,242,.06);
  color:var(--c-on-dark);
  transition:border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.field input::placeholder{color:rgba(234,234,228,.38);}
.field input:focus{
  outline:none;border-color:var(--c-accent);
  background:rgba(247,246,242,.1);
}
.apply-form .btn{width:100%;}
.apply-tip{
  font-size:13px;color:var(--c-accent);
  opacity:0;transform:translateY(-4px);
  transition:opacity var(--t-mid) var(--ease), transform var(--t-mid) var(--ease);
  min-height:20px;
}
.apply-tip.is-visible{opacity:1;transform:translateY(0);}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-ink);color:var(--c-on-dark);
  border-top:1px solid rgba(198,242,78,.18);
  margin-top:96px;
}
.footer-grid{
  display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;
  gap:44px;padding:72px 0 56px;
}
.footer-brand{
  display:inline-flex;align-items:center;gap:10px;
  font-weight:800;font-size:17px;letter-spacing:-.02em;
  color:var(--c-on-dark);margin-bottom:18px;
}
.footer-desc{
  font-size:14px;line-height:1.85;color:rgba(234,234,228,.62);
  max-width:380px;
}
.footer-col h4{
  font-size:13.5px;font-weight:700;letter-spacing:.08em;
  color:var(--c-accent);margin-bottom:20px;
}
.footer-col ul{display:grid;gap:13px;}
.footer-col li{font-size:14px;color:rgba(234,234,228,.66);line-height:1.7;}
.footer-col a{font-size:14px;color:rgba(234,234,228,.66);}
.footer-col a:hover{color:var(--c-accent);text-decoration:underline;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;
  padding:22px 0;border-top:1px solid rgba(234,234,228,.12);
  font-size:13px;color:rgba(234,234,228,.5);
}

/* ============ 入场动效 ============ */
html.js-ready .reveal{opacity:0;transform:translateY(16px);}
html.js-ready .reveal.is-in{
  opacity:1;transform:none;
  transition:opacity var(--t-slow) var(--ease), transform var(--t-slow) var(--ease);
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  html.js-ready .reveal{opacity:1 !important;transform:none !important;transition:none !important;}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  :root{--nav-h:60px;}
  body{padding-top:60px;}
  .nav-left,.nav-right{display:none;}
  .nav-toggle{display:block;}
  .site-header .container.nav-wrap{justify-content:space-between;}
  .brand{font-size:16px;}
  .brand-text{font-size:16px;}
  .section{padding:64px 0;}
  .sec-head{margin-bottom:38px;}

  .tl-line{left:19px;transform:none;top:6px;bottom:6px;}
  .tl-item{display:block;position:relative;padding-left:66px;margin-bottom:24px;}
  .tl-node{
    position:absolute;left:0;top:22px;
    width:38px;height:38px;font-size:15px;
    box-shadow:0 0 0 6px var(--c-bg);
  }
  .tl-card{padding:22px 22px;}
  .tl-card h3{font-size:18px;}

  .trouble-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}

  .apply-grid{grid-template-columns:1fr;gap:32px;}
  .apply-band{padding:34px 26px;}

  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;padding:56px 0 42px;}
  .footer-grid > div:first-child{grid-column:1 / -1;}
  .site-footer{margin-top:64px;}
}

@media (max-width:639px){
  body{font-size:16px;}
  .container{padding:0 18px;}
  .hero-lite{padding:44px 0 52px;}
  .hero-lead{font-size:16.5px;}
  .chips{gap:8px;}
  .chip{padding:8px 14px;font-size:13px;}
  .section{padding:52px 0;}
  .trouble-grid{grid-template-columns:1fr;}
  .faq-q{font-size:16px;padding:18px 58px 18px 20px;}
  .faq-q::before{right:20px;}
  .faq-q::after{right:26px;}
  .faq-a-inner{padding:0 20px 20px 20px;}
  .apply-band{padding:28px 20px;border-radius:var(--r-m);}
  .apply-band::after,.apply-band .corner{width:44px;height:44px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .tl-item{padding-left:58px;}
}

/* roulang page: category3 */
:root{
  --c-ink:#0C1614;
  --c-primary:#0F3B33;
  --c-primary-deep:#08211C;
  --c-accent:#C6F24E;
  --c-accent2:#2FB59A;
  --c-bg:#F7F6F2;
  --c-surface:#FFFFFF;
  --c-surface2:#EFEDE6;
  --c-line:#E3E0D8;
  --c-text:#1B1F1E;
  --c-text2:#5B6663;
  --c-text3:#8B948F;
  --c-on-dark:#EAEAE4;
  --r-s:8px;
  --r-m:12px;
  --r-l:18px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(12,22,20,.06),0 14px 34px -16px rgba(12,22,20,.18);
  --sh-2:0 2px 6px rgba(12,22,20,.07),0 24px 46px -18px rgba(12,22,20,.28);
  --e-1:160ms;
  --e-2:260ms;
  --e-3:520ms;
  --ease:cubic-bezier(.22,.7,.24,1);
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter","Helvetica Neue",Arial,system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden}
h1,h2,h3,h4,h5,p,ul,ol,li,blockquote,figure{margin:0;padding:0}
ul,ol{list-style:none}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block;border:0}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
button{border:0;background:none;cursor:pointer}
::selection{background:var(--c-accent);color:var(--c-ink)}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
section[id],div[id]{scroll-margin-top:92px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:120;
  background:var(--c-accent);color:var(--c-ink);
  font-weight:700;font-size:14px;padding:10px 18px;
  border-radius:0 0 var(--r-m) 0;
}
.skip-link:focus{left:0}

/* ===================== 头部导航 ===================== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,246,242,.92);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  transition:box-shadow var(--e-2) var(--ease),border-color var(--e-2) var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  border-bottom:1px solid var(--c-line);
  box-shadow:0 10px 26px -20px rgba(12,22,20,.55);
}
.nav-wrap{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
  height:72px;
}
.nav-left{display:flex;align-items:center;gap:28px;justify-content:flex-start}
.nav-right{display:flex;align-items:center;gap:28px;justify-content:flex-end}
.nav-link{
  position:relative;
  font-size:15px;
  font-weight:600;
  color:var(--c-text);
  padding:6px 0;
  white-space:nowrap;
  transition:color var(--e-2) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;
  width:0;height:2px;background:var(--c-accent);
  transition:width var(--e-2) var(--ease);
}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--c-primary)}
.nav-link.is-active::after{width:100%}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:19px;font-weight:800;letter-spacing:-.02em;
  color:var(--c-ink);white-space:nowrap;
  justify-self:center;
}
.brand-mark{
  width:12px;height:12px;border-radius:3px;
  background:var(--c-accent);
  box-shadow:0 0 0 3px rgba(198,242,78,.26);
  flex:0 0 auto;
}
.nav-more{position:relative}
.nav-more-btn{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--c-text);
  padding:6px 0;transition:color var(--e-2) var(--ease);
}
.nav-more-btn:hover{color:var(--c-primary)}
.nav-more-btn i{font-size:11px;transition:transform var(--e-2) var(--ease)}
.nav-more.is-open .nav-more-btn i{transform:rotate(180deg)}
.nav-more-menu{
  position:absolute;right:0;top:calc(100% + 14px);
  min-width:230px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-m);
  box-shadow:var(--sh-2);
  padding:8px;
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity var(--e-2) var(--ease),transform var(--e-2) var(--ease),visibility var(--e-2);
}
.nav-more.is-open .nav-more-menu{opacity:1;visibility:visible;transform:translateY(0)}
.nav-more-menu a{
  display:block;padding:10px 12px;border-radius:10px;
  font-size:15px;font-weight:600;color:var(--c-text);
  transition:background-color var(--e-1) var(--ease),color var(--e-1) var(--ease);
}
.nav-more-menu a:hover{background:var(--c-surface2);color:var(--c-primary)}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--c-line);
  border-radius:var(--r-m);
  background:var(--c-surface);
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  transition:border-color var(--e-2) var(--ease),background-color var(--e-2) var(--ease);
}
.nav-toggle:hover{border-color:var(--c-primary)}
.nav-toggle span{
  display:block;width:18px;height:2px;border-radius:2px;
  background:var(--c-ink);
  transition:transform var(--e-2) var(--ease),opacity var(--e-2) var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-menu{
  position:fixed;left:0;right:0;top:0;
  height:100vh;height:100dvh;
  background:var(--c-bg);
  padding:88px 24px 40px;
  z-index:55;
  transform:translateY(-100%);
  transition:transform var(--e-2) var(--ease);
  overflow-y:auto;
  display:flex;flex-direction:column;
}
.mobile-menu.is-open{transform:translateY(0)}
.mobile-menu a:not(.btn){
  font-size:18px;font-weight:600;color:var(--c-text);
  padding:14px 0;border-bottom:1px solid var(--c-line);
}
.mobile-menu a:not(.btn).is-active{color:var(--c-primary)}
.mobile-menu .m-cta{margin-top:28px;align-self:flex-start}

/* ===================== 通用按钮 / 标签 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;
  border-radius:var(--r-m);
  font-size:16px;font-weight:700;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:transform var(--e-1) var(--ease),box-shadow var(--e-2) var(--ease),
             background-color var(--e-2) var(--ease),color var(--e-2) var(--ease),
             border-color var(--e-2) var(--ease),filter var(--e-2) var(--ease);
}
.btn-primary{background:var(--c-accent);color:var(--c-ink)}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.04);box-shadow:0 14px 28px -14px rgba(198,242,78,.85)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-ghost:hover{background:rgba(15,59,51,.08);transform:translateY(-2px)}
.btn-ghost-light{background:transparent;border-color:rgba(234,234,228,.55);color:var(--c-on-dark)}
.btn-ghost-light:hover{background:rgba(234,234,228,.1);transform:translateY(-2px)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.badge{
  display:inline-flex;align-items:center;
  font-size:13px;font-weight:600;line-height:1.6;
  color:var(--c-primary);background:var(--c-surface2);
  border-radius:var(--r-pill);
  padding:5px 13px;
}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:700;color:var(--c-primary);
  border-left:2px solid var(--c-accent);
  padding-left:10px;
  transition:color var(--e-2) var(--ease),gap var(--e-2) var(--ease);
}
.text-link:hover{color:var(--c-accent2);gap:10px}

/* ===================== 内页 Hero ===================== */
.page-hero{
  position:relative;
  padding:44px 0 68px;
  background:var(--c-bg);
  border-bottom:1px solid var(--c-line);
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(var(--c-line) 1px,transparent 1px),linear-gradient(90deg,var(--c-line) 1px,transparent 1px);
  background-size:60px 60px;
  opacity:.45;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.75),transparent 82%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.75),transparent 82%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:9px;
  font-size:14px;color:var(--c-text3);
  margin-bottom:24px;
}
.crumbs a{transition:color var(--e-2) var(--ease)}
.crumbs a:hover{color:var(--c-primary);text-decoration:underline}
.crumbs .sep{color:var(--c-line);font-size:12px}
.crumbs .now{color:var(--c-text2)}
.page-hero h1{
  font-size:clamp(30px,4.2vw,46px);
  line-height:1.16;
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--c-ink);
  max-width:900px;
  margin-bottom:18px;
}
.hero-lead{
  font-size:18px;
  line-height:1.85;
  color:var(--c-text2);
  max-width:730px;
}
.anchor-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--c-primary);
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  padding:8px 18px;
  transition:border-color var(--e-2) var(--ease),background-color var(--e-2) var(--ease),
             transform var(--e-2) var(--ease),box-shadow var(--e-2) var(--ease);
}
.chip i{font-size:11px;color:var(--c-accent2)}
.chip:hover{border-color:var(--c-primary);background:var(--c-surface2);transform:translateY(-2px);box-shadow:var(--sh-1)}

/* ===================== 板块与标题 ===================== */
.section{padding:96px 0}
.section-sm{padding:56px 0}
.section-alt{background:var(--c-surface)}
.section-head{max-width:760px;margin-bottom:46px}
.section-head h2{
  position:relative;
  padding-left:18px;
  font-size:clamp(24px,3vw,32px);
  font-weight:700;
  line-height:1.3;
  color:var(--c-ink);
  margin-bottom:14px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;
  width:4px;border-radius:2px;background:var(--c-accent);
}
.section-head p{font-size:16px;line-height:1.85;color:var(--c-text2)}

/* ===================== 瀑布流卡片 ===================== */
.masonry{column-count:3;column-gap:24px}
.masonry > *{
  break-inside:avoid;
  -webkit-column-break-inside:avoid;
  page-break-inside:avoid;
  margin-bottom:24px;
}
.card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-l);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:transform var(--e-2) var(--ease),box-shadow var(--e-2) var(--ease),border-color var(--e-2) var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D6D2C6}
.card-media{position:relative;overflow:hidden;background:var(--c-surface2)}
.card-media img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  transition:transform var(--e-3) var(--ease);
}
.card:hover .card-media img{transform:scale(1.04)}
.card-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(12,22,20,0) 45%,rgba(12,22,20,.34));
  opacity:0;transition:opacity var(--e-2) var(--ease);
}
.card:hover .card-media::after{opacity:1}
.card-body{padding:24px 24px 28px}
.card-body h3{font-size:20px;font-weight:600;line-height:1.5;color:var(--c-ink);margin:14px 0 10px}
.card-body p{font-size:15px;line-height:1.85;color:var(--c-text2)}
.card-body .badge{margin-bottom:2px}
.text-card{padding:28px 24px 30px}
.text-card h3{font-size:20px;font-weight:600;line-height:1.5;color:var(--c-ink);margin:14px 0 10px}
.text-card p{font-size:15px;line-height:1.85;color:var(--c-text2)}
.stat-card{padding:30px 24px 28px}
.stat-num{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:44px;font-weight:800;line-height:1;
  color:var(--c-primary);
  letter-spacing:-.03em;
}
.stat-num span{font-size:17px;font-weight:700;color:var(--c-accent2);margin-left:6px;letter-spacing:0}
.stat-label{
  font-size:14px;line-height:1.8;color:var(--c-text2);
  padding-bottom:14px;margin:12px 0 16px;
  border-bottom:2px solid var(--c-accent);
}
.mini-list li{
  position:relative;
  font-size:14px;line-height:1.7;color:var(--c-text2);
  padding-left:16px;margin-bottom:10px;
}
.mini-list li:last-child{margin-bottom:0}
.mini-list li::before{
  content:"";position:absolute;left:0;top:.68em;
  width:6px;height:6px;border-radius:2px;background:var(--c-accent2);
}

/* ===================== 引用块 ===================== */
.pullquote{
  max-width:760px;margin:0 auto;
  background:var(--c-surface2);
  border-left:3px solid var(--c-primary);
  border-radius:0 var(--r-m) var(--r-m) 0;
  padding:26px 30px;
  font-size:18px;line-height:1.9;color:var(--c-text);
}
.pullquote cite{display:block;margin-top:14px;font-size:14px;font-style:normal;color:var(--c-text3)}

/* ===================== 适用情况 ===================== */
.scene-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.scene{
  position:relative;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-l);
  box-shadow:var(--sh-1);
  padding:28px 26px 30px;
  transition:transform var(--e-2) var(--ease),box-shadow var(--e-2) var(--ease);
}
.scene:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.scene-num{
  display:inline-block;
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:15px;font-weight:800;letter-spacing:.08em;
  color:var(--c-primary);background:var(--c-surface2);
  border-radius:var(--r-pill);padding:4px 12px;margin-bottom:16px;
}
.scene h3{font-size:20px;font-weight:600;color:var(--c-ink);margin-bottom:10px;line-height:1.5}
.scene p{font-size:15px;line-height:1.85;color:var(--c-text2)}

/* ===================== 步骤 ===================== */
.steps{
  position:relative;
  display:grid;grid-template-columns:repeat(5,1fr);gap:22px;
  padding-top:28px;
}
.steps::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--c-line)}
.step{position:relative;padding-top:6px}
.step::before{
  content:"";position:absolute;top:-34px;left:0;
  width:12px;height:12px;border-radius:50%;
  background:var(--c-bg);border:2px solid var(--c-accent2);
}
.step-num{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:36px;font-weight:800;line-height:1;
  color:var(--c-accent2);letter-spacing:-.02em;
}
.step h3{font-size:18px;font-weight:600;color:var(--c-ink);margin:12px 0 8px;line-height:1.5}
.step p{font-size:15px;line-height:1.8;color:var(--c-text2)}

/* ===================== FAQ ===================== */
.faq-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-l);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.faq-list{background:transparent;margin:0}
.faq-list .accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--c-line);
}
.faq-list .accordion-item:last-child{border-bottom:0}
.faq-list .accordion-title{
  position:relative;
  background:transparent;
  border:0;
  padding:22px 62px 22px 26px;
  font-size:17px;font-weight:600;line-height:1.6;
  color:var(--c-text);
  transition:color var(--e-2) var(--ease),background-color var(--e-2) var(--ease);
}
.faq-list .accordion-title:hover{color:var(--c-primary);background:var(--c-bg)}
.faq-list .accordion-title::before{
  content:"\f067";
  font-family:"Font Awesome 6 Free","Font Awesome 5 Free";
  font-weight:900;
  position:absolute;right:26px;top:50%;
  transform:translateY(-50%);
  font-size:13px;
  color:var(--c-accent2);
  transition:transform var(--e-2) var(--ease),color var(--e-2) var(--ease);
}
.faq-list .accordion-item.is-active .accordion-title{color:var(--c-primary)}
.faq-list .accordion-item.is-active .accordion-title::before{
  transform:translateY(-50%) rotate(45deg);
  color:var(--c-primary);
}
.faq-list .accordion-content{
  background:transparent;
  border:0;
  padding:0 62px 24px 26px;
  max-width:760px;
  font-size:15px;line-height:1.85;color:var(--c-text2);
}
.faq-list .accordion-content p{padding-top:0}

/* ===================== 底部 CTA ===================== */
.cta-section{
  position:relative;
  padding:92px 0;
  color:var(--c-on-dark);
  background-color:var(--c-ink);
  background-image:linear-gradient(rgba(8,33,28,.92),rgba(12,22,20,.94)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.cta-section::before,.cta-section::after{
  content:"";position:absolute;width:66px;height:66px;
  border:2px solid rgba(198,242,78,.45);
  pointer-events:none;
}
.cta-section::before{top:36px;left:36px;border-right:0;border-bottom:0}
.cta-section::after{bottom:36px;right:36px;border-left:0;border-top:0}
.cta-section .container{position:relative;z-index:2}
.cta-title{
  font-size:clamp(24px,3.1vw,34px);
  font-weight:800;line-height:1.3;letter-spacing:-.01em;
  color:#FFFFFF;margin-bottom:16px;
}
.cta-desc{font-size:16px;line-height:1.85;color:rgba(234,234,228,.75);max-width:560px}
.cta-list{margin-top:26px}
.cta-list li{
  position:relative;
  font-size:15px;line-height:1.8;
  color:rgba(234,234,228,.86);
  padding-left:20px;margin-bottom:12px;
}
.cta-list li:last-child{margin-bottom:0}
.cta-list li::before{
  content:"";position:absolute;left:0;top:.66em;
  width:8px;height:8px;border-radius:2px;background:var(--c-accent);
}
.cta-grid{row-gap:44px}
.cta-form{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(234,234,228,.16);
  border-radius:var(--r-l);
  padding:30px 28px 28px;
}
.field{margin-bottom:18px}
.field label{
  display:block;
  font-size:13px;font-weight:600;letter-spacing:.02em;
  color:rgba(234,234,228,.72);
  margin-bottom:8px;
}
.field input,.field textarea{
  width:100%;
  height:48px;
  margin:0;
  border-radius:var(--r-m);
  border:1px solid var(--c-line);
  background:#F7F6F2;
  color:var(--c-ink);
  font-size:15px;
  padding:0 14px;
  transition:border-color var(--e-2) var(--ease),box-shadow var(--e-2) var(--ease);
}
.field textarea{
  height:auto;min-height:96px;
  padding:12px 14px;line-height:1.7;resize:vertical;
}
.field input:focus,.field textarea:focus{
  outline:none;
  border-color:var(--c-accent);
  box-shadow:0 0 0 2px rgba(198,242,78,.45);
}
.field input::placeholder,.field textarea::placeholder{color:#9AA29E}
.cta-form .btn{width:100%;margin-top:6px}
.form-note{
  min-height:22px;
  margin-top:14px;
  font-size:13px;line-height:1.7;
  color:var(--c-accent);
}

/* ===================== 页脚 ===================== */
.site-footer{
  background:var(--c-ink);
  color:var(--c-on-dark);
  border-top:1px solid rgba(198,242,78,.18);
  padding:76px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:44px}
.footer-brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:18px;font-weight:800;letter-spacing:-.01em;
  color:#FFFFFF;margin-bottom:18px;
}
.footer-desc{
  font-size:14px;line-height:1.9;
  color:rgba(234,234,228,.68);
  max-width:370px;
}
.footer-col h4{
  font-size:14px;font-weight:700;letter-spacing:.05em;
  color:#FFFFFF;margin-bottom:18px;
}
.footer-col ul li{
  font-size:14px;line-height:1.8;
  color:rgba(234,234,228,.62);
  margin-bottom:12px;
}
.footer-col ul li:last-child{margin-bottom:0}
.footer-col a{color:rgba(234,234,228,.68);transition:color var(--e-2) var(--ease)}
.footer-col a:hover{color:var(--c-accent);text-decoration:underline}
.footer-bottom{
  margin-top:60px;
  padding:24px 0;
  border-top:1px solid rgba(234,234,228,.12);
  display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;
  font-size:13px;
  color:rgba(234,234,228,.5);
}

/* ===================== 入场动效 ===================== */
.reveal{
  opacity:0;
  transform:translateY(16px);
  transition:opacity var(--e-3) var(--ease),transform var(--e-3) var(--ease);
}
.reveal.is-in{opacity:1;transform:none}

/* ===================== 响应式 ===================== */
@media (max-width:1023px){
  .nav-left,.nav-right{display:none}
  .nav-toggle{display:flex}
  .nav-wrap{
    position:relative;
    display:flex;
    justify-content:center;
    height:60px;
  }
  .nav-toggle{position:absolute;right:0;top:50%;transform:translateY(-50%)}
  .brand{font-size:17px}
  .section{padding:72px 0}
  .section-sm{padding:48px 0}
  .page-hero{padding:34px 0 54px}
  .masonry{column-count:2;column-gap:20px}
  .masonry > *{margin-bottom:20px}
  .scene-grid{grid-template-columns:1fr;gap:18px}
  .steps{grid-template-columns:repeat(2,1fr);gap:30px;padding-top:0}
  .steps::before,.step::before{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .cta-section{padding:72px 0}
  .cta-section::before,.cta-section::after{width:48px;height:48px}
  .cta-section::before{top:22px;left:22px}
  .cta-section::after{bottom:22px;right:22px}
}
@media (max-width:639px){
  body{font-size:16px}
  .container{padding:0 18px}
  .section{padding:56px 0}
  .section-sm{padding:40px 0}
  .page-hero{padding:26px 0 44px}
  .hero-lead{font-size:16px}
  .masonry{column-count:1}
  .steps{grid-template-columns:1fr;gap:24px}
  .step{padding-left:18px;border-left:2px solid var(--c-line);padding-top:0;padding-bottom:6px}
  .step-num{font-size:30px}
  .pullquote{padding:22px 20px;font-size:16px}
  .faq-list .accordion-title{padding:18px 52px 18px 18px;font-size:16px}
  .faq-list .accordion-title::before{right:18px}
  .faq-list .accordion-content{padding:0 18px 20px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{margin-top:40px;flex-direction:column}
  .cta-form{padding:24px 20px 22px}
  .btn{height:46px;padding:0 22px;font-size:15px}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --c-ink:#0C1614;
  --c-primary:#0F3B33;
  --c-primary-deep:#08211C;
  --c-accent:#C6F24E;
  --c-accent2:#2FB59A;
  --c-bg:#F7F6F2;
  --c-surface:#FFFFFF;
  --c-surface2:#EFEDE6;
  --c-line:#E3E0D8;
  --c-text:#1B1F1E;
  --c-text2:#5B6663;
  --c-text3:#8B948F;
  --c-on-dark:#EAEAE4;
  --r-s:8px;
  --r-m:12px;
  --r-l:18px;
  --r-pill:999px;
  --sh-card:0 1px 2px rgba(12,22,20,.06), 0 14px 34px -16px rgba(12,22,20,.18);
  --sh-soft:0 1px 2px rgba(12,22,20,.05), 0 8px 22px -14px rgba(12,22,20,.16);
  --t-fast:160ms;
  --t-mid:260ms;
  --t-slow:520ms;
  --ease:cubic-bezier(.22,.7,.24,1);
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"SF Pro Display","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,h6{margin:0;font-family:var(--font-cn);line-height:1.25;color:var(--c-text)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t-fast) var(--ease)}
a:hover{color:var(--c-primary-deep)}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;margin:0;padding:0;cursor:pointer;line-height:inherit}
input,textarea{font-family:inherit;font-size:inherit;line-height:1.6}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}
.num,.stat-num,time{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--c-ink);color:var(--c-accent);padding:10px 18px;border-radius:0 0 var(--r-m) 0;font-size:14px;
}
.skip-link:focus{left:0;color:var(--c-accent)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(247,246,242,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color var(--t-mid) var(--ease), box-shadow var(--t-mid) var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:0 8px 24px -20px rgba(12,22,20,.5)}
.nav-wrap{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  height:72px;
  gap:18px;
}
.nav-left{display:flex;align-items:center;gap:26px;justify-self:start}
.nav-right{display:flex;align-items:center;gap:26px;justify-self:end}
.nav-link{
  position:relative;
  font-size:15px;font-weight:600;color:var(--c-text);padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--c-accent);transition:width var(--t-mid) var(--ease);
}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--c-primary)}
.nav-link.is-active::after{width:100%}
.brand{
  display:inline-flex;align-items:center;gap:10px;justify-self:center;
  font-size:19px;font-weight:800;letter-spacing:-.02em;color:var(--c-ink);white-space:nowrap;
}
.brand:hover{color:var(--c-ink)}
.brand-mark{
  width:14px;height:14px;border-radius:4px;background:var(--c-accent);
  box-shadow:0 0 0 3px rgba(15,59,51,.10);flex:none;
}
.brand-text{display:inline-block}
.nav-more{position:relative}
.nav-more-btn{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--c-text);padding:6px 0;
}
.nav-more-btn::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--c-accent);transition:width var(--t-mid) var(--ease);
}
.nav-more-btn:hover::after,.nav-more-btn.is-active::after{width:100%}
.nav-more-btn.is-active{color:var(--c-primary)}
.nav-more-btn i{font-size:11px;transition:transform var(--t-mid) var(--ease)}
.nav-more.is-open .nav-more-btn i{transform:rotate(180deg)}
.nav-more-menu{
  position:absolute;top:calc(100% + 12px);right:0;min-width:236px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-m);
  box-shadow:var(--sh-card);padding:8px;
  opacity:0;visibility:hidden;transform:translateY(6px);
  transition:opacity var(--t-fast) var(--ease),transform var(--t-fast) var(--ease),visibility var(--t-fast);
}
.nav-more.is-open .nav-more-menu{opacity:1;visibility:visible;transform:translateY(0)}
.nav-more-menu a{
  display:block;padding:10px 14px;border-radius:var(--r-s);
  font-size:14.5px;font-weight:600;color:var(--c-text);
}
.nav-more-menu a:hover{background:var(--c-bg);color:var(--c-primary)}
.nav-more-menu a.is-active{color:var(--c-primary);background:var(--c-bg)}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-s);
  justify-self:end;align-items:center;justify-content:center;flex-direction:column;gap:5px;
  border:1px solid var(--c-line);background:var(--c-surface);
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink);transition:transform var(--t-mid) var(--ease),opacity var(--t-fast)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-menu{
  display:none;position:fixed;left:0;right:0;top:60px;z-index:110;
  background:var(--c-bg);border-bottom:1px solid var(--c-line);
  max-height:0;overflow:hidden;transition:max-height var(--t-mid) var(--ease);
  box-shadow:0 20px 40px -30px rgba(12,22,20,.6);
}
.mobile-menu.is-open{max-height:86vh;overflow-y:auto}
.mobile-menu a{
  display:block;padding:16px 24px;font-size:18px;font-weight:600;color:var(--c-text);
  border-bottom:1px solid var(--c-line);
}
.mobile-menu a:hover,.mobile-menu a.is-active{color:var(--c-primary);background:var(--c-surface2)}
.mobile-menu .m-cta{
  margin:18px 24px 24px;text-align:center;border-bottom:0;border-radius:var(--r-m);
}
.mobile-menu .m-cta:hover{background:var(--c-accent);color:var(--c-ink)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-m);
  font-size:15.5px;font-weight:700;letter-spacing:.01em;
  border:1.5px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease),background-color var(--t-fast) var(--ease),color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease);
}
.btn-primary{background:var(--c-accent);color:var(--c-ink);box-shadow:0 8px 20px -14px rgba(12,22,20,.6)}
.btn-primary:hover{background:#d2fa66;color:var(--c-ink);transform:translateY(-2px);box-shadow:0 14px 26px -14px rgba(12,22,20,.5)}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary)}
.btn-ghost:hover{background:rgba(15,59,51,.08);color:var(--c-primary);transform:translateY(-2px)}
.btn-ghost-dark{background:transparent;color:var(--c-on-dark);border-color:rgba(234,234,228,.5)}
.btn-ghost-dark:hover{background:rgba(234,234,228,.12);color:#fff;transform:translateY(-2px)}
.btn-link{
  display:inline-flex;align-items:center;gap:8px;padding-left:12px;
  font-size:15px;font-weight:700;color:var(--c-primary);
  border-left:2px solid var(--c-accent);
}
.btn-link:hover{color:var(--c-primary-deep)}
.btn-link i{transition:transform var(--t-fast) var(--ease)}
.btn-link:hover i{transform:translateX(4px)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.5;transform:none;cursor:not-allowed}

/* ---------- 页头区 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--c-bg);
  border-bottom:1px solid var(--c-line);
  padding:40px 0 44px;
  min-height:300px;
  display:flex;align-items:center;
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(15,59,51,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(15,59,51,.055) 1px,transparent 1px);
  background-size:48px 48px;
}
.page-hero::after{
  content:"";position:absolute;right:40px;bottom:34px;width:74px;height:74px;
  border-right:2px solid var(--c-accent);border-bottom:2px solid var(--c-accent);
  opacity:.75;pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--c-text3);margin-bottom:16px}
.crumbs a{color:var(--c-text3)}
.crumbs a:hover{color:var(--c-primary)}
.crumbs span{color:var(--c-line)}
.crumbs em{font-style:normal;color:var(--c-text2)}
.page-hero h1{
  font-size:clamp(30px,4.4vw,44px);
  font-weight:800;letter-spacing:-.02em;line-height:1.16;
  max-width:880px;
}
.hero-lead{
  margin-top:16px;max-width:720px;
  font-size:18px;line-height:1.8;color:var(--c-text2);
}
.chip-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 18px;border-radius:var(--r-pill);
  background:var(--c-surface);border:1px solid var(--c-line);
  font-size:14.5px;font-weight:600;color:var(--c-primary);
  transition:border-color var(--t-fast) var(--ease),background-color var(--t-fast) var(--ease),transform var(--t-fast) var(--ease);
}
.chip i{font-size:12px;color:var(--c-accent2)}
.chip:hover{border-color:var(--c-primary);background:#fff;transform:translateY(-2px);color:var(--c-primary)}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section-tight{padding:66px 0}
.section-alt{background:var(--c-surface2)}
.section-head{margin-bottom:40px;max-width:760px}
.section-head h2{
  position:relative;padding-left:16px;
  font-size:clamp(24px,3vw,31px);font-weight:700;letter-spacing:-.01em;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;background:var(--c-accent);
}
.section-head p{margin-top:12px;font-size:16px;color:var(--c-text2);max-width:680px}

/* ---------- 三步自查 ---------- */
.steps{
  position:relative;
  display:grid;grid-template-columns:repeat(3,1fr);gap:28px;
  padding-top:26px;
}
.steps::before{
  content:"";position:absolute;top:0;left:8%;right:8%;height:1px;background:var(--c-line);
}
.step{position:relative;padding-top:26px}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:56px;height:56px;border-radius:var(--r-m);
  border:1.5px solid var(--c-accent2);background:var(--c-surface);
  font-family:var(--font-num);font-size:22px;font-weight:800;color:var(--c-primary);
  font-variant-numeric:tabular-nums;
}
.step h3{margin-top:18px;font-size:18px;font-weight:600}
.step p{margin-top:10px;font-size:15px;color:var(--c-text2);line-height:1.8}

/* ---------- 手风琴 FAQ ---------- */
.faq-grid{margin-top:8px}
.acc-group{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);
  box-shadow:var(--sh-card);padding:6px 24px 14px;height:100%;
}
.acc-group > h3{
  position:relative;padding-left:14px;margin:20px 0 4px;
  font-size:20px;font-weight:700;
}
.acc-group > h3::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:3px;border-radius:3px;background:var(--c-accent);
}
.acc-group .group-note{margin:8px 0 6px;font-size:14px;color:var(--c-text3)}
.acc-item{border-bottom:1px solid var(--c-line)}
.acc-item:last-child{border-bottom:0}
.acc-head{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:18px 0;text-align:left;font-size:17px;font-weight:600;color:var(--c-text);
  transition:color var(--t-fast) var(--ease);
}
.acc-head:hover{color:var(--c-primary)}
.acc-head i{
  flex:none;margin-top:5px;font-size:13px;color:var(--c-primary);
  transition:transform var(--t-mid) var(--ease);
}
.acc-item.is-open .acc-head{color:var(--c-primary)}
.acc-item.is-open .acc-head i{transform:rotate(45deg)}
.acc-body{max-height:0;overflow:hidden;transition:max-height var(--t-mid) var(--ease)}
.acc-inner{padding-bottom:20px;max-width:720px;font-size:15px;line-height:1.85;color:var(--c-text2)}
.acc-inner p + p{margin-top:10px}
.acc-inner ul{margin-top:10px}
.acc-inner li{position:relative;padding-left:18px;margin-top:6px}
.acc-inner li::before{
  content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:2px;background:var(--c-accent2);
}
.acc-inner strong{color:var(--c-text);font-weight:600}

/* ---------- 支持入口 + 参数表 ---------- */
.support-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);
  box-shadow:var(--sh-card);overflow:hidden;height:100%;display:flex;flex-direction:column;
}
.support-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--c-surface2)}
.support-cover img{width:100%;height:100%;object-fit:cover;transition:transform var(--t-slow) var(--ease)}
.support-card:hover .support-cover img{transform:scale(1.04)}
.support-cover::after{
  content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,33,28,0) 40%,rgba(8,33,28,.42) 100%);
}
.support-body{padding:26px 28px 30px;display:flex;flex-direction:column;flex:1}
.support-body h3{font-size:21px;font-weight:700}
.support-body > p{margin-top:12px;font-size:15px;color:var(--c-text2);line-height:1.85}
.support-list{margin-top:18px;border-top:1px solid var(--c-line)}
.support-list li{
  display:flex;justify-content:space-between;gap:16px;
  padding:13px 0;border-bottom:1px solid var(--c-line);
  font-size:14.5px;color:var(--c-text2);
}
.support-list li span:first-child{color:var(--c-text);font-weight:600}
.support-actions{margin-top:24px;display:flex;flex-wrap:wrap;gap:14px;align-items:center}

.table-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);
  box-shadow:var(--sh-card);padding:26px 28px 30px;height:100%;
}
.table-card h3{font-size:21px;font-weight:700}
.table-card > p{margin-top:12px;font-size:15px;color:var(--c-text2)}
.table-scroll{overflow-x:auto;margin-top:20px;border:1px solid var(--c-line);border-radius:var(--r-m)}
table.spec{width:100%;min-width:540px;border-collapse:collapse;font-size:14.5px}
table.spec th,table.spec td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--c-line);vertical-align:top}
table.spec thead th{
  background:var(--c-surface2);color:var(--c-primary);font-weight:700;font-size:14px;letter-spacing:.02em;
}
table.spec tbody tr:nth-child(even){background:#FBFAF7}
table.spec tbody tr:hover{background:var(--c-bg)}
table.spec td:first-child{font-weight:600;color:var(--c-text);white-space:nowrap}
table.spec tbody tr:last-child th,table.spec tbody tr:last-child td{border-bottom:0}
.table-note{margin-top:12px;font-size:13px;color:var(--c-text3)}

/* ---------- CTA 板 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--c-ink) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  padding:78px 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;background:rgba(12,22,20,.86);
}
.cta-band::after{
  content:"";position:absolute;left:44px;top:44px;width:66px;height:66px;
  border-left:2px solid var(--c-accent);border-top:2px solid var(--c-accent);opacity:.7;
}
.cta-band .container{position:relative;z-index:2}
.cta-inner{display:grid;grid-template-columns:1.25fr .75fr;gap:48px;align-items:center}
.cta-inner h2{color:#fff;font-size:clamp(26px,3.2vw,34px);font-weight:800;letter-spacing:-.01em}
.cta-inner p{margin-top:16px;color:rgba(234,234,228,.86);font-size:16.5px;max-width:620px}
.cta-points{margin-top:24px;display:grid;gap:10px}
.cta-points li{position:relative;padding-left:20px;color:rgba(234,234,228,.92);font-size:15px}
.cta-points li::before{
  content:"";position:absolute;left:0;top:12px;width:7px;height:7px;border-radius:2px;background:var(--c-accent);
}
.cta-actions{display:flex;flex-direction:column;align-items:flex-start;gap:16px;justify-self:end}
.cta-actions .note{font-size:13.5px;color:rgba(234,234,228,.7)}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-ink);color:var(--c-on-dark);
  border-top:1px solid rgba(198,242,78,.18);
  padding:64px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:#fff;letter-spacing:-.01em}
.footer-desc{margin-top:16px;font-size:14.5px;line-height:1.85;color:rgba(234,234,228,.72);max-width:380px}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-col ul li{margin-bottom:10px;font-size:14.5px;color:rgba(234,234,228,.72)}
.footer-col ul a{color:rgba(234,234,228,.72)}
.footer-col ul a:hover{color:var(--c-accent);text-decoration:underline}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(234,234,228,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13.5px;color:rgba(234,234,228,.6);
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity var(--t-slow) var(--ease),transform var(--t-slow) var(--ease)}
.reveal.is-in{opacity:1;transform:none}
.reveal.d1{transition-delay:60ms}
.reveal.d2{transition-delay:120ms}
.reveal.d3{transition-delay:180ms}

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

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-left,.nav-right{display:none}
  .nav-toggle{display:flex}
  .nav-wrap{grid-template-columns:40px 1fr 40px;height:60px;gap:10px}
  .brand{font-size:17px}
  .mobile-menu{display:block;top:60px}
  .section{padding:64px 0}
  .section-tight{padding:52px 0}
  .page-hero{min-height:260px;padding:34px 0 38px}
  .page-hero::after{right:20px;bottom:20px;width:52px;height:52px}
  .steps{grid-template-columns:1fr;gap:0;padding-top:0}
  .steps::before{left:17px;right:auto;top:0;bottom:0;width:1px;height:auto}
  .step{padding:0 0 28px 58px}
  .step-num{width:44px;height:44px;font-size:18px;position:absolute;left:0;top:0}
  .step h3{margin-top:4px}
  .cta-inner{grid-template-columns:1fr;gap:30px}
  .cta-actions{justify-self:start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  body{font-size:16px}
  .section{padding:56px 0}
  .acc-group{padding:4px 18px 10px}
  .acc-head{font-size:16px}
  .support-body{padding:22px 20px 26px}
  .table-card{padding:22px 20px 26px}
  .cta-band{padding:56px 0}
  .cta-band::after{left:20px;top:20px;width:44px;height:44px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .chip-row{gap:10px}
  .chip{padding:8px 15px;font-size:14px}
}
@media (max-width:519px){
  .brand-text{font-size:15.5px;letter-spacing:-.02em}
  .btn{width:100%;height:46px}
  .btn-ghost,.btn-primary{width:100%}
  .support-actions .btn-link{width:auto}
}