/* roulang page: index */
:root{
  --ink900:#0A2A20;
  --brand700:#0E5140;
  --brand500:#14805F;
  --lime:#B6F13C;
  --lime-soft:#EAF6D2;
  --promo-a:#FF5A2B;
  --promo-b:#FFB03A;
  --bg:#F5F7F2;
  --bg-soft:#EAF2E9;
  --card:#FFFFFF;
  --line:#DCE7DE;
  --t1:#12211C;
  --t2:#4A5C55;
  --t3:#86968F;
  --grad-brand:linear-gradient(135deg,#0E5140 0%,#14805F 60%,#B6F13C 140%);
  --grad-promo:linear-gradient(135deg,#FF5A2B 0%,#FFB03A 100%);
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:28px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(10,42,32,.05),0 10px 30px -18px rgba(10,42,32,.25);
  --sh-2:0 18px 44px -20px rgba(14,81,64,.35);
  --container:1200px;
  --sec:88px;
  --fz-12:12px;--fz-13:13px;--fz-14:14px;--fz-16:16px;--fz-18:18px;
  --fz-20:20px;--fz-24:24px;--fz-28:28px;--fz-34:34px;--fz-44:44px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans CJK SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:var(--fz-16);
  line-height:1.75;
  color:var(--t1);
  background:var(--bg);
  text-align:left;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{line-height:1.25;font-weight:800;letter-spacing:.2px;}
p{color:var(--t2);}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px;}
::selection{background:var(--lime);color:var(--ink900);}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:var(--sec) 0;}
.section-soft{background:var(--bg-soft);}
.section-dark{background:var(--ink900);}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;}

.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.sec-head h2{font-size:var(--fz-28);color:var(--ink900);}
.sec-head p{margin-top:10px;max-width:640px;font-size:var(--fz-16);color:var(--t2);}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:var(--fz-13);font-weight:700;color:var(--brand700);background:var(--lime-soft);border:1px solid #D6EAB4;border-radius:var(--r-pill);padding:6px 14px;}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--brand500);}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--r-pill);border:0;font-size:var(--fz-16);font-weight:700;cursor:pointer;transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;white-space:nowrap;}
.btn-primary{background:var(--lime);color:var(--ink900);box-shadow:0 10px 24px -14px rgba(182,241,60,.9);}
.btn-primary:hover{background:var(--brand700);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;border:1.5px solid var(--brand700);color:var(--brand700);}
.btn-ghost:hover{background:var(--bg-soft);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-promo{background:var(--grad-promo);color:#fff;box-shadow:0 12px 26px -16px rgba(255,90,43,.95);}
.btn-promo:hover{transform:translateY(-1px);filter:brightness(1.04);}
.btn-promo:active{transform:translateY(1px);}
.btn-sm{height:40px;padding:0 18px;font-size:var(--fz-14);}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand700);font-weight:700;font-size:var(--fz-16);transition:gap .18s ease;}
.link-arrow::after{content:"→";color:var(--brand500);transition:transform .18s ease,color .18s ease;}
.link-arrow:hover::after{transform:translateX(3px);color:var(--promo-a);}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:80;background:rgba(245,247,242,.86);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line);}
.header-inner{display:flex;align-items:center;gap:20px;height:68px;max-width:1360px;margin:0 auto;padding:0 24px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{width:38px;height:38px;border-radius:12px;background:var(--grad-brand);display:grid;place-items:center;box-shadow:var(--sh-1);}
.brand-mark svg{width:22px;height:22px;display:block;}
.brand-word{display:flex;align-items:baseline;gap:4px;font-size:var(--fz-18);font-weight:800;color:var(--ink900);letter-spacing:.3px;}
.brand-word span{font-size:var(--fz-14);font-weight:700;color:var(--brand500);}
.nav{display:flex;align-items:center;gap:4px;margin-left:12px;}
.nav-link{position:relative;display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:var(--r-pill);font-size:var(--fz-14);font-weight:600;color:var(--t2);transition:background .18s ease,color .18s ease;}
.nav-link:hover{color:var(--brand700);background:var(--bg-soft);}
.nav-link.is-active{color:var(--ink900);}
.nav-link.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--lime);}
.header-tools{display:flex;align-items:center;gap:12px;margin-left:auto;}
.cmd-search{display:flex;align-items:center;gap:8px;width:260px;height:42px;padding:0 12px;border:1px solid var(--line);border-radius:var(--r-md);background:#fff;transition:box-shadow .18s ease,border-color .18s ease;}
.cmd-search:focus-within{border-color:var(--brand500);box-shadow:0 0 0 4px rgba(182,241,60,.32);}
.cmd-search svg{width:16px;height:16px;flex-shrink:0;color:var(--t3);}
.cmd-search input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:var(--fz-14);}
.cmd-search input::placeholder{color:var(--t3);}
.cmd-search kbd{font-size:var(--fz-12);color:var(--t3);border:1px solid var(--line);border-radius:6px;padding:1px 6px;background:var(--bg-soft);}
.quick-link{font-size:var(--fz-14);font-weight:600;color:var(--brand700);}
.quick-link:hover{color:var(--ink900);}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-md);background:#fff;align-items:center;justify-content:center;cursor:pointer;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink900);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink900);border-radius:2px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-scrim{position:fixed;inset:0;background:rgba(10,42,32,.45);opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;z-index:70;}
.nav-scrim.is-open{opacity:1;visibility:visible;}

/* ============ Hero ============ */
.hero{padding:72px 0 64px;background:radial-gradient(1200px 420px at 82% -10%,rgba(182,241,60,.22),transparent 62%),var(--bg);position:relative;overflow:hidden;}
.hero::after{content:"";position:absolute;inset:auto -60px -120px auto;width:520px;height:320px;border-radius:50%;background:rgba(20,128,95,.06);filter:blur(10px);pointer-events:none;}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;position:relative;z-index:1;}
.hero h1{font-size:var(--fz-44);color:var(--ink900);margin:20px 0 0;max-width:620px;}
.hero h1 em{font-style:normal;color:var(--brand700);background:linear-gradient(180deg,transparent 62%,rgba(182,241,60,.75) 62%);padding:0 2px;border-radius:4px;}
.hero-sub{margin-top:18px;font-size:var(--fz-18);color:var(--t2);max-width:520px;}
.hero-actions{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap;}
.hero-badges{display:flex;gap:12px;margin-top:36px;flex-wrap:wrap;}
.hero-badges li{display:flex;align-items:baseline;gap:6px;background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);padding:9px 18px 9px 14px;box-shadow:var(--sh-1);position:relative;}
.hero-badges li::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:22px;border-radius:0 3px 3px 0;background:var(--lime);}
.hero-badges b{font-size:var(--fz-24);color:var(--ink900);font-weight:800;line-height:1;}
.hero-badges span{font-size:var(--fz-13);color:var(--t2);}
.hero-visual{position:relative;}
.hero-visual .frame{border-radius:var(--r-xl);background:var(--grad-brand);padding:16px;box-shadow:var(--sh-2);}
.hero-visual .frame img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:18px;background:var(--bg-soft);}
.float-card{position:absolute;right:-14px;bottom:-18px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:14px 18px;box-shadow:var(--sh-1);min-width:172px;}
.float-card b{display:block;font-size:var(--fz-24);color:var(--brand700);line-height:1.1;}
.float-card span{font-size:var(--fz-13);color:var(--t2);}

/* ============ 信任条 ============ */
.trust{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.trust-list{display:flex;align-items:center;gap:12px;min-height:56px;flex-wrap:wrap;padding:10px 0;}
.trust-list li{display:inline-flex;align-items:center;gap:8px;font-size:var(--fz-14);font-weight:600;color:var(--brand700);background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);padding:8px 16px;}
.trust-list li::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--brand500);box-shadow:0 0 0 3px rgba(20,128,95,.14);}

/* ============ 优惠阶梯 ============ */
.ladder{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;align-items:end;}
.step-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);padding:24px;box-shadow:var(--sh-1);display:flex;flex-direction:column;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand500);}
.step-card .rank{font-size:var(--fz-34);font-weight:800;color:var(--brand500);line-height:1;letter-spacing:1px;}
.step-card h3{margin-top:14px;font-size:var(--fz-20);color:var(--ink900);}
.step-card .gate{margin-top:8px;font-size:var(--fz-13);color:var(--t3);}
.step-card ul{margin:18px 0 22px;display:grid;gap:10px;}
.step-card ul li{display:flex;gap:8px;font-size:var(--fz-14);color:var(--t2);line-height:1.65;}
.step-card ul li::before{content:"✓";flex-shrink:0;color:var(--brand500);font-weight:800;}
.step-card .btn{margin-top:auto;}
.step-1{min-height:298px;background:#fff;}
.step-2{min-height:322px;background:#FBFDF9;}
.step-3{min-height:348px;background:#F7FBF3;}
.step-4{min-height:376px;border:2px solid transparent;background-image:linear-gradient(#fff,#fff),linear-gradient(135deg,#FF5A2B,#FFB03A);background-origin:border-box;background-clip:padding-box,border-box;}
.step-4 .rank{color:var(--promo-a);}
.badge-top{position:absolute;top:-12px;right:20px;background:var(--grad-promo);color:#fff;font-size:var(--fz-12);font-weight:700;border-radius:var(--r-pill);padding:4px 12px;box-shadow:0 10px 20px -12px rgba(255,90,43,.9);}

/* ============ 套餐对比 ============ */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;padding-top:16px;}
.plan{background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);padding:28px 24px;box-shadow:var(--sh-1);display:flex;flex-direction:column;transition:transform .2s ease,box-shadow .2s ease;}
.plan:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.plan.is-featured{transform:translateY(-12px);border-top:6px solid var(--lime);box-shadow:0 24px 56px -26px rgba(14,81,64,.4);position:relative;}
.plan.is-featured:hover{transform:translateY(-16px);}
.plan.is-featured::after{content:"推荐";position:absolute;top:14px;right:20px;font-size:var(--fz-12);font-weight:700;color:#fff;background:var(--grad-promo);border-radius:var(--r-pill);padding:4px 12px;}
.plan h3{font-size:var(--fz-20);color:var(--ink900);}
.plan .plan-desc{margin-top:8px;font-size:var(--fz-14);color:var(--t3);}
.plan .price{margin-top:18px;display:flex;align-items:baseline;gap:6px;color:var(--ink900);}
.plan .price b{font-size:var(--fz-34);font-weight:800;line-height:1;}
.plan .price span{font-size:var(--fz-14);color:var(--t3);}
.plan .plan-rows{margin:22px 0 26px;display:grid;gap:0;}
.plan-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);font-size:var(--fz-14);color:var(--t2);}
.plan-row:last-child{border-bottom:0;}
.plan-row i{font-style:normal;font-weight:800;}
.plan-row .yes{color:var(--brand500);}
.plan-row .no{color:var(--t3);}
.plan .btn{margin-top:auto;}

/* ============ 限时入口 ============ */
.flash{position:relative;background:var(--ink900);color:#fff;padding:52px 0;}
.flash::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad-promo);}
.flash-grid{display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center;}
.flash h2{font-size:var(--fz-28);color:#fff;}
.flash p{margin-top:12px;color:rgba(255,255,255,.72);font-size:var(--fz-16);max-width:520px;}
.countdown{display:grid;grid-template-columns:repeat(4,72px);gap:12px;}
.countdown li{background:#fff;border-radius:12px;padding:10px 4px;text-align:center;color:var(--ink900);}
.countdown li b{display:block;font-size:var(--fz-24);font-weight:800;line-height:1.2;}
.countdown li span{font-size:var(--fz-12);color:var(--t3);}
.progress{margin-top:22px;height:8px;border-radius:var(--r-pill);background:rgba(255,255,255,.15);overflow:hidden;}
.progress i{display:block;height:100%;width:68%;border-radius:var(--r-pill);background:var(--lime);}
.flash-side{display:flex;flex-direction:column;align-items:flex-end;gap:16px;}
.flash-note{font-size:var(--fz-13);color:rgba(255,255,255,.66);}

/* ============ 最新信息 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:18px;box-shadow:var(--sh-1);display:flex;flex-direction:column;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand500);}
.news-thumb{display:block;border-radius:var(--r-lg);overflow:hidden;background:var(--bg-soft);}
.news-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s ease;}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{padding:16px 4px 4px;display:flex;flex-direction:column;flex:1;}
.chip{display:inline-flex;align-self:flex-start;font-size:var(--fz-12);font-weight:700;color:var(--brand700);background:var(--lime-soft);border-radius:var(--r-pill);padding:4px 12px;}
.news-card h3{margin-top:12px;font-size:var(--fz-18);color:var(--ink900);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card h3 a:hover{color:var(--brand700);}
.news-card p{margin-top:10px;font-size:var(--fz-14);color:var(--t2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;font-size:var(--fz-13);color:var(--t3);}
.news-meta .go{font-weight:700;color:var(--brand700);}
.news-card:hover .news-meta .go{color:var(--promo-a);}
.empty-state{background:var(--bg-soft);border:1px dashed #C9DCCB;border-radius:var(--r-xl);padding:56px 24px;text-align:center;}
.empty-state svg{width:64px;height:64px;margin:0 auto 16px;display:block;color:var(--brand500);}
.empty-state p{font-size:var(--fz-16);color:var(--t2);margin-bottom:18px;}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-aside{position:sticky;top:96px;}
.faq-aside h2{font-size:var(--fz-28);color:var(--ink900);}
.faq-aside p{margin-top:14px;font-size:var(--fz-16);color:var(--t2);}
.faq-aside .btn{margin-top:22px;}
.faq-list{display:grid;gap:12px;}
.faq-item{background:transparent;border:1px solid var(--line);border-radius:var(--r-lg);padding:0 20px;transition:background .2s ease,box-shadow .2s ease,border-color .2s ease;}
.faq-item[open]{background:#fff;box-shadow:var(--sh-1);border-color:#CFE2D2;}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 0;font-size:var(--fz-16);font-weight:700;color:var(--ink900);}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";font-size:var(--fz-24);font-weight:700;color:var(--brand500);line-height:1;transition:transform .25s ease,color .25s ease;}
.faq-item[open] summary::after{transform:rotate(45deg);color:var(--promo-a);}
.faq-item .faq-body{padding:0 0 20px;border-top:1px solid var(--line);margin-top:-1px;}
.faq-item .faq-body p{padding-top:16px;font-size:var(--fz-14);color:var(--t2);}

/* ============ 表单 ============ */
.form-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start;}
.form-intro h2{font-size:var(--fz-28);color:var(--ink900);}
.form-intro p{margin-top:14px;font-size:var(--fz-16);color:var(--t2);}
.trust-points{margin-top:26px;display:grid;gap:14px;}
.trust-points li{display:flex;gap:12px;font-size:var(--fz-14);color:var(--t2);}
.trust-points li::before{content:"";flex-shrink:0;width:20px;height:20px;border-radius:50%;background:var(--lime-soft);border:1px solid #D6EAB4;margin-top:4px;box-shadow:inset 0 0 0 4px #fff;}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);padding:28px;box-shadow:var(--sh-1);}
.form-row{display:grid;gap:8px;margin-bottom:16px;}
.form-row label{font-size:var(--fz-13);font-weight:700;color:var(--t2);}
.form-row input,.form-row select,.form-row textarea{height:48px;border:1px solid var(--line);border-radius:12px;padding:0 14px;background:#fff;outline:none;transition:border-color .18s ease,box-shadow .18s ease;}
.form-row textarea{height:112px;padding:12px 14px;resize:vertical;line-height:1.7;}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{border-color:var(--brand500);box-shadow:0 0 0 4px rgba(182,241,60,.3);}
.form-row.has-error input,.form-row.has-error select{border-color:var(--promo-a);}
.form-row .err{font-size:var(--fz-12);color:var(--promo-a);display:none;}
.form-row.has-error .err{display:block;}
.form-note{font-size:var(--fz-12);color:var(--t3);margin-top:12px;text-align:left;}
.alert{border-radius:12px;padding:12px 16px;font-size:var(--fz-14);margin-bottom:16px;display:none;}
.alert.is-ok{display:block;background:#EAF6D2;color:var(--brand700);border:1px solid #CFE2A2;}
.alert.is-bad{display:block;background:#FFEDE6;color:#B8391A;border:1px solid #FFCBB6;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink900);color:rgba(255,255,255,.72);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-word{color:#fff;font-size:var(--fz-18);font-weight:800;}
.footer-brand .brand-word span{color:var(--lime);font-size:var(--fz-14);}
.site-footer p{color:rgba(255,255,255,.72);font-size:var(--fz-14);}
.site-footer h4{color:#fff;font-size:var(--fz-16);margin-bottom:16px;}
.footer-links{display:grid;gap:10px;}
.footer-links a{font-size:var(--fz-14);color:rgba(255,255,255,.72);transition:color .18s ease;}
.footer-links a:hover{color:var(--lime);}
.footer-bottom{margin-top:48px;border-top:1px solid rgba(255,255,255,.14);padding:22px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:var(--fz-13);color:rgba(255,255,255,.6);}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{max-width:1080px;}
  .header-inner{max-width:1080px;}
  .cmd-search{width:220px;}
}
@media (max-width:1023px){
  :root{--sec:64px;}
  .section{padding:var(--sec) 0;}
  .hero{padding:52px 0 48px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero h1{font-size:var(--fz-34);}
  .hero-visual{order:2;}
  .float-card{right:12px;bottom:-14px;}
  .ladder{grid-template-columns:repeat(2,1fr);align-items:stretch;}
  .step-1,.step-2,.step-3,.step-4{min-height:0;}
  .plans{grid-template-columns:repeat(3,minmax(280px,1fr));overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:12px;-webkit-overflow-scrolling:touch;}
  .plan{scroll-snap-align:start;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .faq-grid,.form-grid{grid-template-columns:1fr;gap:32px;}
  .faq-aside{position:static;}
  .flash-grid{grid-template-columns:1fr;gap:28px;}
  .flash-side{align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cmd-search{display:none;}
  .nav-toggle{display:inline-flex;}
  .quick-link{display:none;}
  .nav{position:fixed;top:0;right:0;height:100vh;width:min(84vw,340px);background:#fff;flex-direction:column;align-items:stretch;gap:2px;padding:84px 20px 120px;margin:0;transform:translateX(104%);transition:transform .32s ease;box-shadow:-24px 0 60px -34px rgba(10,42,32,.6);overflow-y:auto;z-index:90;}
  .nav.is-open{transform:translateX(0);}
  .nav-link{height:48px;justify-content:flex-start;padding:0 14px;border-radius:12px;font-size:var(--fz-16);}
  .nav-link.is-active{background:var(--bg-soft);}
  .nav-link.is-active::after{display:none;}
}
@media (max-width:767px){
  :root{--sec:48px;}
  body{font-size:15px;}
  .container{padding:0 18px;}
  .header-inner{height:60px;padding:0 18px;}
  .hero h1{font-size:30px;}
  .hero-sub{font-size:var(--fz-16);}
  .hero-badges li{padding:8px 14px 8px 12px;}
  .hero-badges b{font-size:var(--fz-20);}
  .sec-head h2,.faq-aside h2,.form-intro h2,.flash h2{font-size:22px;}
  .ladder{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .news-card,.plan,.step-card,.form-card{border-radius:20px;}
  .countdown{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr;}
  .btn{height:46px;}
  .hero-actions .btn{flex:1 1 auto;}
  .plans{grid-template-columns:repeat(3,78vw);}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:520px){
  .hero h1{font-size:26px;}
  .brand-word{font-size:var(--fz-16);}
  .trust-list li{font-size:var(--fz-13);}
  .float-card{padding:10px 14px;min-width:146px;}
  .float-card b{font-size:var(--fz-20);}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --ink900:#0A2A20;
  --brand700:#0E5140;
  --brand500:#14805F;
  --lime:#B6F13C;
  --promo-a:#FF5A2B;
  --promo-b:#FFB03A;
  --bg:#F5F7F2;
  --soft:#EAF2E9;
  --card:#FFFFFF;
  --line:#DCE7DE;
  --t1:#12211C;
  --t2:#4A5C55;
  --t3:#86968F;
  --grad-brand:linear-gradient(135deg,#0E5140 0%,#14805F 60%,#B6F13C 140%);
  --grad-promo:linear-gradient(90deg,#FF5A2B 0%,#FFB03A 100%);
  --r-s:10px;
  --r-m:14px;
  --r-l:20px;
  --r-xl:28px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(10,42,32,.05),0 10px 30px -18px rgba(10,42,32,.25);
  --sh-2:0 18px 44px -20px rgba(14,81,64,.35);
  --container:1200px;
  --sect:88px;
  --font:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--t1);
  background:var(--bg);
  text-align:left;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
svg{display:block;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px;}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;}
.tnum{font-variant-numeric:tabular-nums;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform .18s ease,background-color .18s ease,color .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn:active{transform:translateY(1px);}
.btn-primary{
  background:var(--lime);color:var(--ink900);
  box-shadow:0 8px 22px -12px rgba(182,241,60,.9);
}
.btn-primary:hover{background:var(--brand700);color:#fff;transform:translateY(-1px);box-shadow:0 14px 30px -16px rgba(14,81,64,.7);}
.btn-ghost{background:transparent;color:var(--brand700);border:1.5px solid var(--brand700);}
.btn-ghost:hover{background:var(--soft);transform:translateY(-1px);}
.btn-promo{background:var(--grad-promo);color:#fff;box-shadow:0 12px 26px -14px rgba(255,90,43,.75);}
.btn-promo:hover{transform:translateY(-1px);filter:brightness(1.04);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-lg{height:50px;padding:0 28px;font-size:16px;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand700);font-weight:600;font-size:15px;}
.text-link svg{transition:transform .2s ease,stroke .2s ease;}
.text-link:hover svg{transform:translateX(3px);}
.text-link:hover{color:var(--brand500);}

/* ---------- 标签 / 胶囊 ---------- */
.pill{
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--soft);color:var(--brand700);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
}
.pill-lime{background:rgba(182,241,60,.28);color:#2C4A12;}
.badge-num{font-variant-numeric:tabular-nums;font-weight:700;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(245,247,242,.86);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  max-width:1360px;margin:0 auto;padding:0 24px;
  height:68px;display:flex;align-items:center;gap:26px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:11px;background:var(--ink900);
  display:grid;place-items:center;flex:0 0 auto;
}
.brand-mark svg{width:20px;height:20px;}
.brand-word{font-size:17.5px;font-weight:700;letter-spacing:-.01em;color:var(--ink900);}
.brand-word span{color:var(--brand500);font-weight:600;margin-left:2px;}
.nav{display:flex;align-items:center;gap:4px;margin-left:6px;}
.nav-link{
  position:relative;padding:9px 14px;border-radius:var(--r-pill);
  font-size:15px;color:var(--t2);font-weight:500;
  transition:color .2s ease,background-color .2s ease;
}
.nav-link:hover{color:var(--brand700);background:var(--soft);}
.nav-link.is-active{color:var(--brand700);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);
  bottom:1px;width:22px;height:2px;border-radius:2px;background:var(--lime);
}
.header-tools{display:flex;align-items:center;gap:12px;margin-left:auto;}
.cmd-search{
  display:flex;align-items:center;gap:8px;
  width:262px;height:40px;padding:0 10px 0 12px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-m);
  transition:box-shadow .2s ease,border-color .2s ease;
}
.cmd-search:focus-within{border-color:var(--brand500);box-shadow:0 0 0 4px rgba(182,241,60,.3);}
.cmd-search svg{width:17px;height:17px;color:var(--t3);flex:0 0 auto;}
.cmd-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--t1);
}
.cmd-search input::placeholder{color:var(--t3);}
.cmd-search kbd{
  font-family:var(--font);font-size:11.5px;color:var(--t3);
  border:1px solid var(--line);border-radius:6px;padding:1px 6px;background:var(--bg);
}
.quick-link{font-size:14.5px;color:var(--t2);font-weight:500;padding:6px 4px;border-radius:8px;}
.quick-link:hover{color:var(--brand700);}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:#fff;place-items:center;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink900);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink900);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- 面包屑 ---------- */
.crumb{padding:26px 0 6px;font-size:13.5px;color:var(--t3);}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:#C3D0C7;}
.crumb a{color:var(--t2);}
.crumb a:hover{color:var(--brand700);}
.crumb .is-current{color:var(--t3);max-width:min(560px,60vw);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章头 ---------- */
.article-head{padding:26px 0 34px;border-bottom:1px solid var(--line);}
.article-head .kicker{display:flex;align-items:center;gap:10px;margin-bottom:16px;flex-wrap:wrap;}
.article-title{
  font-size:44px;line-height:1.25;letter-spacing:-.015em;color:var(--ink900);
  max-width:900px;font-weight:700;
}
.meta-row{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  margin-top:20px;font-size:14px;color:var(--t2);
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#C3D0C7;}
.meta-row .src{color:var(--t3);}

/* ---------- 文章正文 ---------- */
.article-wrap{max-width:800px;margin:0 auto;padding:48px 0 0;}
.article-body{font-size:16.5px;line-height:1.9;color:#20302a;}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.5em;}
.article-body h2{
  font-size:28px;line-height:1.3;color:var(--ink900);font-weight:700;
  margin:2.1em 0 .75em;padding-left:16px;border-left:5px solid var(--lime);border-radius:2px;
}
.article-body h3{font-size:20px;line-height:1.4;color:var(--brand700);margin:1.8em 0 .6em;font-weight:600;}
.article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.5em;}
.article-body ul li{list-style:disc;margin-bottom:.55em;}
.article-body ol li{list-style:decimal;margin-bottom:.55em;}
.article-body li::marker{color:var(--brand500);}
.article-body img{border-radius:var(--r-l);margin:1.7em 0;width:100%;height:auto;}
.article-body a{color:var(--brand700);border-bottom:1px solid rgba(182,241,60,.85);}
.article-body a:hover{color:var(--brand500);}
.article-body strong{color:var(--ink900);font-weight:700;}
.article-body blockquote{
  margin:1.7em 0;padding:18px 22px;background:var(--soft);
  border-left:4px solid var(--brand500);border-radius:0 var(--r-m) var(--r-m) 0;
  color:var(--t2);font-size:15.5px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body table{width:100%;border-collapse:collapse;margin:1.7em 0;font-size:15px;background:#fff;border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left;}
.article-body th{background:var(--soft);color:var(--ink900);font-weight:600;}
.article-body tr:last-child td{border-bottom:0;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0;}

/* 空态 */
.empty-state{
  padding:64px 28px;background:#fff;border:1px dashed var(--line);
  border-radius:var(--r-xl);text-align:center;
}
.empty-state .empty-ico{
  width:64px;height:64px;margin:0 auto 20px;border-radius:20px;background:var(--soft);
  display:grid;place-items:center;color:var(--brand500);
}
.empty-state h2{font-size:24px;color:var(--ink900);margin-bottom:10px;}
.empty-state p{color:var(--t2);max-width:420px;margin:0 auto 24px;font-size:15px;}

/* ---------- 标签行 + 上下篇 ---------- */
.article-foot{margin-top:56px;}
.tag-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding-top:26px;border-top:1px solid var(--line);}
.tag-row .tag-label{font-size:14px;color:var(--t3);margin-right:2px;}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 15px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);font-size:13.5px;color:var(--t2);
  transition:border-color .2s ease,color .2s ease,transform .2s ease;
}
.tag:hover{border-color:var(--lime);color:var(--brand700);transform:translateY(-2px);}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:32px;}
.pager a{
  display:block;padding:20px 22px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-l);transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.pager a:hover{border-color:var(--brand500);box-shadow:var(--sh-2);transform:translateY(-3px);}
.pager .pager-dir{font-size:12.5px;color:var(--t3);letter-spacing:.06em;margin-bottom:8px;}
.pager .pager-title{font-size:15.5px;font-weight:600;color:var(--ink900);line-height:1.5;}
.pager a.next{text-align:right;}

/* ---------- 相关推荐 ---------- */
.related{padding:var(--sect) 0 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;}
.section-head h2{font-size:28px;line-height:1.3;color:var(--ink900);letter-spacing:-.01em;}
.section-head p{color:var(--t2);font-size:15px;margin-top:8px;}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{
  background:#fff;border:1px solid var(--line);border-radius:24px;padding:18px;
  display:flex;flex-direction:column;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand500);}
.post-card .thumb{
  border-radius:20px;overflow:hidden;background:var(--soft);aspect-ratio:16/10;
}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.post-card:hover .thumb img{transform:scale(1.04);}
.post-card .pill{margin:16px 0 10px;}
.post-card h3{
  font-size:17px;line-height:1.5;color:var(--ink900);font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card p{
  margin-top:10px;font-size:14px;line-height:1.7;color:var(--t2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card .meta{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--t3);
}
.post-card .meta .text-link{font-size:13.5px;}

/* ---------- 底部 CTA ---------- */
.cta-bar{margin-top:var(--sect);}
.cta-inner{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  background:var(--grad-brand);padding:52px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;color:#fff;
}
.cta-inner::after{
  content:"";position:absolute;right:-70px;top:-70px;width:260px;height:260px;border-radius:50%;
  background:rgba(182,241,60,.18);pointer-events:none;
}
.cta-inner h2{font-size:30px;line-height:1.3;color:#fff;max-width:520px;}
.cta-inner p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.82);max-width:520px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:1;}
.btn-on-dark{background:#fff;color:var(--brand700);}
.btn-on-dark:hover{background:var(--lime);color:var(--ink900);transform:translateY(-1px);}
.btn-outline-light{border:1.5px solid rgba(255,255,255,.6);color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.14);transform:translateY(-1px);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink900);color:rgba(255,255,255,.72);padding:66px 0 28px;margin-top:var(--sect);}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.1);}
.footer-brand .brand-word{color:#fff;}
.footer-brand .brand-word span{color:var(--lime);}
.site-footer p{font-size:14.5px;line-height:1.8;max-width:340px;}
.footer-grid h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14.5px;color:rgba(255,255,255,.72);}
.footer-links a:hover{color:var(--lime);}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:1080px;}
}
@media (max-width:1023px){
  :root{--sect:64px;}
  .header-inner{height:60px;gap:14px;}
  .site-header .nav{
    position:fixed;top:60px;right:0;width:min(320px,86vw);height:calc(100vh - 60px);
    background:#fff;flex-direction:column;align-items:stretch;gap:4px;padding:18px;
    box-shadow:-24px 0 60px -34px rgba(10,42,32,.55);
    transform:translateX(106%);transition:transform .28s ease;overflow:auto;
    border-left:1px solid var(--line);
  }
  .site-header .nav.is-open{transform:translateX(0);}
  .nav-link{padding:14px 12px;min-height:48px;display:flex;align-items:center;font-size:16px;border-radius:12px;}
  .nav-link.is-active::after{display:none;}
  .nav-link.is-active{background:var(--soft);}
  .cmd-search{display:none;}
  .quick-link{display:none;}
  .nav-toggle{display:grid;}
  .article-title{font-size:34px;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:40px 32px;}
  .cta-inner h2{font-size:26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
}
@media (max-width:767px){
  :root{--sect:48px;}
  .container{padding:0 18px;}
  .header-inner{padding:0 18px;}
  body{font-size:15.5px;}
  .article-title{font-size:30px;}
  .article-head{padding:18px 0 26px;}
  .article-wrap{padding:34px 0 0;}
  .article-body{font-size:16px;}
  .article-body h2{font-size:22px;}
  .article-body h3{font-size:18px;}
  .card-grid{grid-template-columns:1fr;}
  .pager{grid-template-columns:1fr;}
  .pager a.next{text-align:left;}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:24px;}
  .section-head h2{font-size:22px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .crumb .is-current{max-width:70vw;}
  .post-card{border-radius:20px;}
}
@media (max-width:520px){
  .article-title{font-size:26px;}
  .btn{height:44px;padding:0 18px;}
  .cta-inner{padding:32px 22px;}
  .cta-inner h2{font-size:22px;}
  .brand-word{font-size:16px;}
}

/* roulang page: category1 */
:root{
  --ink900:#0A2A20;
  --brand700:#0E5140;
  --brand500:#14805F;
  --lime:#B6F13C;
  --promo-a:#FF5A2B;
  --promo-b:#FFB03A;
  --bg:#F5F7F2;
  --bg-soft:#EAF2E9;
  --card:#FFFFFF;
  --line:#DCE7DE;
  --t1:#12211C;
  --t2:#4A5C55;
  --t3:#86968F;
  --r-s:10px;
  --r-m:14px;
  --r-l:20px;
  --r-xl:28px;
  --pill:999px;
  --sh-1:0 1px 2px rgba(10,42,32,.05), 0 10px 30px -18px rgba(10,42,32,.25);
  --sh-2:0 18px 44px -20px rgba(14,81,64,.35);
  --gap-section:88px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--t1);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--gap-section) 0;}
.section-tight{padding:56px 0;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(245,247,242,.86);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  max-width:1360px;margin:0 auto;padding:0 24px;
  height:68px;display:flex;align-items:center;gap:20px;
}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{
  width:34px;height:34px;border-radius:12px;flex:none;
  background:linear-gradient(135deg,#0E5140 0%,#14805F 70%);
  display:grid;place-items:center;
}
.brand-mark svg{width:20px;height:20px;}
.brand-word{font-size:17px;font-weight:800;letter-spacing:.2px;color:var(--ink900);white-space:nowrap;}
.brand-word span{color:var(--brand500);}
.nav{display:flex;align-items:center;gap:2px;margin-left:6px;}
.nav-link{
  position:relative;padding:9px 14px;border-radius:var(--pill);
  font-size:14.5px;color:var(--t2);white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--brand700);background:var(--bg-soft);}
.nav-link.is-active{color:var(--ink900);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;bottom:0;
  transform:translateX(-50%);
  width:22px;height:2px;border-radius:2px;background:var(--lime);
}
.header-tools{margin-left:auto;display:flex;align-items:center;gap:12px;}
.cmd-search{
  display:flex;align-items:center;gap:8px;
  width:262px;height:40px;padding:0 12px;
  border:1px solid var(--line);border-radius:var(--r-m);
  background:#fff;color:var(--t3);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.cmd-search svg{width:16px;height:16px;flex:none;}
.cmd-search input{
  flex:1;min-width:0;border:0;outline:none;background:transparent;
  font-size:13.5px;color:var(--t1);
}
.cmd-search input::placeholder{color:var(--t3);}
.cmd-search kbd{
  font-size:11px;padding:2px 6px;border-radius:6px;
  border:1px solid var(--line);background:var(--bg-soft);color:var(--t3);
  font-family:inherit;
}
.cmd-search:focus-within{border-color:var(--brand500);box-shadow:0 0 0 4px rgba(182,241,60,.30);}
.quick-link{font-size:14px;color:var(--t2);transition:color .2s var(--ease);}
.quick-link:hover{color:var(--brand700);}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);
  border-radius:var(--r-m);background:#fff;cursor:pointer;
  position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;transform:translateX(-50%);
  width:18px;height:2px;border-radius:2px;background:var(--ink900);
  content:"";transition:.2s var(--ease);
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.drawer-search{display:none;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--pill);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .18s var(--ease),background .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  white-space:nowrap;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--lime);color:var(--ink900);}
.btn-primary:hover{background:var(--brand700);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{border:1.5px solid var(--brand700);color:var(--brand700);background:transparent;}
.btn-ghost:hover{background:var(--bg-soft);}
.btn-promo{background:linear-gradient(135deg,var(--promo-a),var(--promo-b));color:#fff;}
.btn-promo:hover{transform:translateY(-1px);box-shadow:0 14px 30px -16px rgba(255,90,43,.6);}
.btn[disabled]{opacity:.4;cursor:not-allowed;}
.btn .spinner{
  width:14px;height:14px;border-radius:50%;
  border:2px solid rgba(10,42,32,.25);border-top-color:var(--ink900);
  animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--brand700);
}
.text-link svg{width:15px;height:15px;transition:transform .2s var(--ease),color .2s var(--ease);}
.text-link:hover svg{transform:translateX(3px);color:var(--brand500);}

/* ---------- 面包屑 ---------- */
.crumb{padding:22px 0 0;}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--t3);}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb a{color:var(--t2);transition:color .2s var(--ease);}
.crumb a:hover{color:var(--brand700);}
.crumb .sep{color:#B9C6BE;}
.crumb .current{color:var(--ink900);font-weight:600;}

/* ---------- Hero ---------- */
.cat-hero{padding:24px 0 0;}
.hero-panel{
  position:relative;overflow:hidden;
  border-radius:var(--r-xl);
  background:linear-gradient(135deg,#0E5140 0%,#14805F 62%,#B6F13C 150%);
  color:#fff;
  padding:52px;
  display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center;
  box-shadow:0 26px 60px -34px rgba(10,42,32,.75);
}
.hero-panel::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(circle at 88% 12%,rgba(182,241,60,.28),transparent 46%);
}
.hero-copy{position:relative;z-index:2;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--pill);
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);
  font-size:13px;letter-spacing:.3px;
}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--lime);display:block;}
.hero-panel h1{
  margin:18px 0 0;font-size:44px;line-height:1.2;color:#fff;
  letter-spacing:-.4px;
}
.hero-panel h1 em{
  font-style:normal;color:var(--lime);
  box-shadow:inset 0 -.24em 0 rgba(182,241,60,.22);
}
.hero-lead{
  margin-top:18px;max-width:540px;font-size:16px;line-height:1.85;
  color:rgba(255,255,255,.86);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-actions .btn-ghost{border-color:rgba(255,255,255,.6);color:#fff;}
.hero-actions .btn-ghost:hover{background:rgba(255,255,255,.14);}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;}
.badge{
  display:flex;align-items:center;gap:10px;
  background:rgba(255,255,255,.95);color:var(--ink900);
  border-radius:var(--pill);padding:8px 16px 8px 12px;
}
.badge::before{content:"";width:3px;height:26px;border-radius:3px;background:var(--lime);}
.badge b{font-size:20px;font-weight:800;letter-spacing:-.3px;}
.badge span{font-size:12.5px;color:var(--t2);}
.hero-visual{position:relative;z-index:2;}
.hero-visual img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-l);background:var(--bg-soft);
  box-shadow:0 24px 50px -26px rgba(10,42,32,.8);
}
.hero-float{
  position:absolute;right:-8px;bottom:-18px;
  background:#fff;color:var(--ink900);
  border-radius:var(--r-l);padding:14px 18px;
  box-shadow:var(--sh-1);border:1px solid var(--line);
  min-width:172px;
}
.hero-float b{display:block;font-size:24px;font-weight:800;color:var(--brand700);}
.hero-float span{font-size:12.5px;color:var(--t2);}

/* ---------- 信任胶囊 ---------- */
.trust-strip{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px;}
.trust-pill{
  display:inline-flex;align-items:center;gap:8px;
  height:44px;padding:0 18px;border-radius:var(--pill);
  background:var(--bg-soft);border:1px solid var(--line);
  font-size:13.5px;color:var(--brand700);font-weight:600;
}
.trust-pill svg{width:15px;height:15px;flex:none;}

/* ---------- 主区布局 ---------- */
.layout{
  display:grid;grid-template-columns:2fr 1fr;gap:32px;
  align-items:start;
}
.block-head{margin-bottom:28px;}
.block-head h2{font-size:28px;letter-spacing:-.3px;}
.block-head p{margin-top:10px;color:var(--t2);max-width:640px;font-size:15px;}

/* ---------- 瀑布卡片 ---------- */
.masonry{column-count:2;column-gap:24px;}
.entry-card{
  break-inside:avoid;
  margin-bottom:24px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--lime);}
.entry-thumb{position:relative;overflow:hidden;background:var(--bg-soft);}
.entry-thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .45s var(--ease);
}
.entry-card:hover .entry-thumb img{transform:scale(1.04);}
.entry-thumb.tall img{aspect-ratio:4/3;}
.entry-thumb.wide img{aspect-ratio:16/10;}
.entry-body{padding:22px 24px 24px;}
.chip{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:var(--pill);
  background:var(--bg-soft);color:var(--brand700);
  font-size:12px;font-weight:600;letter-spacing:.2px;
}
.entry-body h3{margin-top:12px;font-size:19px;line-height:1.4;}
.entry-body p{margin-top:10px;font-size:14.5px;color:var(--t2);line-height:1.75;}
.entry-points{margin-top:14px;border-top:1px dashed var(--line);padding-top:14px;}
.entry-points li{
  position:relative;padding-left:20px;
  font-size:13.5px;color:var(--t2);line-height:1.9;
}
.entry-points li::before{
  content:"";position:absolute;left:2px;top:12px;
  width:7px;height:7px;border-radius:50%;
  background:var(--brand500);
}
.entry-foot{
  margin-top:16px;display:flex;align-items:center;justify-content:space-between;
  gap:12px;font-size:13px;color:var(--t3);
}

/* ---------- 目录 ---------- */
.toc-wrap{position:sticky;top:96px;}
.toc{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-xl);padding:22px;box-shadow:var(--sh-1);
}
.toc h3{font-size:14px;color:var(--t3);font-weight:600;letter-spacing:.6px;}
.toc nav{margin-top:12px;display:flex;flex-direction:column;gap:2px;}
.toc a{
  display:block;padding:10px 12px;
  border-left:3px solid transparent;border-radius:0 var(--r-s) var(--r-s) 0;
  font-size:14.5px;color:var(--t2);
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.toc a:hover{background:var(--bg-soft);color:var(--brand700);}
.toc a.is-current{
  background:var(--bg-soft);color:var(--ink900);
  font-weight:600;border-left-color:var(--lime);
}
.toc-help{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line);
  font-size:13px;color:var(--t2);line-height:1.8;
}
.toc-help .btn{margin-top:12px;width:100%;}

/* ---------- 步骤流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.step{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);
  padding:26px 22px;box-shadow:var(--sh-1);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.step:hover{transform:translateY(-4px);border-color:var(--brand500);box-shadow:var(--sh-2);}
.step b{
  display:block;font-size:34px;font-weight:800;color:var(--bg-soft);
  letter-spacing:-1px;line-height:1;
}
.step h3{margin-top:14px;font-size:17px;}
.step p{margin-top:8px;font-size:14px;color:var(--t2);line-height:1.75;}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:40px;align-items:start;}
.faq-aside h2{font-size:28px;}
.faq-aside p{margin-top:12px;color:var(--t2);font-size:15px;}
.faq-aside .btn{margin-top:20px;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);
  overflow:hidden;transition:box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.faq-item.is-open{box-shadow:var(--sh-1);border-color:var(--brand500);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:transparent;border:0;cursor:pointer;
  text-align:left;font-size:15.5px;font-weight:600;color:var(--ink900);
  transition:background .2s var(--ease);
}
.faq-q:hover{background:var(--bg-soft);}
.faq-q .ico{
  flex:none;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);background:var(--bg-soft);
  display:grid;place-items:center;
  transition:transform .25s var(--ease),background .25s var(--ease);
}
.faq-q .ico::before{
  content:"";width:10px;height:2px;border-radius:2px;background:var(--brand700);
  box-shadow:0 -3.5px 0 -0.5px transparent;
}
.faq-q .ico::after{
  content:"";position:absolute;width:2px;height:10px;border-radius:2px;background:var(--brand700);
}
.faq-item.is-open .faq-q .ico{transform:rotate(45deg);background:var(--lime);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .32s var(--ease);
}
.faq-a p{
  padding:0 22px 20px;font-size:14.5px;color:var(--t2);line-height:1.85;
  border-top:1px solid var(--line);padding-top:16px;margin:0 22px 20px;padding-left:0;padding-right:0;
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--ink900);color:#fff;
  border-radius:var(--r-xl);padding:48px;
  display:grid;grid-template-columns:8fr 4fr;gap:32px;align-items:center;
}
.cta-band::before{
  content:"";position:absolute;left:0;right:0;top:0;height:4px;
  background:linear-gradient(90deg,var(--promo-a),var(--promo-b));
}
.cta-band h2{font-size:28px;color:#fff;letter-spacing:-.3px;}
.cta-band p{margin-top:12px;color:rgba(255,255,255,.78);font-size:15px;max-width:560px;}
.cta-actions{display:flex;flex-direction:column;gap:12px;}
.cta-actions .btn-ghost{border-color:rgba(255,255,255,.55);color:#fff;}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.12);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink900);color:#fff;margin-top:var(--gap-section);padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-word{color:#fff;}
.footer-brand .brand-word span{color:var(--lime);}
.site-footer p{color:rgba(255,255,255,.68);font-size:14px;line-height:1.85;max-width:320px;}
.site-footer h4{font-size:15px;margin-bottom:16px;color:#fff;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:rgba(255,255,255,.72);font-size:14px;transition:color .2s var(--ease);}
.footer-links a:hover{color:var(--lime);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:1080px;}
  .cmd-search{width:220px;}
}
@media (max-width:1023px){
  :root{--gap-section:64px;}
  .nav{
    position:fixed;top:0;right:0;height:100vh;width:min(330px,86vw);
    background:#fff;flex-direction:column;align-items:stretch;gap:4px;
    padding:82px 20px 28px;margin:0;
    transform:translateX(102%);transition:transform .3s var(--ease);
    box-shadow:-24px 0 60px -30px rgba(10,42,32,.45);z-index:90;
    overflow-y:auto;
  }
  .nav.is-open{transform:translateX(0);}
  .nav-link{padding:14px 16px;font-size:16px;border-radius:var(--r-m);}
  .nav-link.is-active::after{display:none;}
  .nav-link.is-active{background:var(--bg-soft);}
  .drawer-search{
    display:block;width:100%;margin-bottom:16px;
    padding:10px 14px;border:1px solid var(--line);border-radius:var(--r-m);
    background:var(--bg-soft);font-size:14px;outline:none;
  }
  .nav-toggle{display:grid;place-items:center;position:relative;z-index:95;}
  .cmd-search,.quick-link{display:none;}
  .hero-panel{grid-template-columns:1fr;padding:38px 28px;}
  .hero-panel h1{font-size:34px;}
  .hero-visual img{aspect-ratio:16/9;}
  .hero-float{right:8px;bottom:-14px;}
  .layout{grid-template-columns:1fr;gap:28px;}
  .masonry{column-count:2;}
  .toc-wrap{position:static;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .cta-band{grid-template-columns:1fr;padding:36px 28px;}
  .cta-actions{flex-direction:row;flex-wrap:wrap;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  :root{--gap-section:48px;--r-xl:20px;}
  body{font-size:15.5px;}
  .header-inner{height:60px;padding:0 16px;}
  .container{padding:0 16px;}
  .brand-word{font-size:15.5px;}
  .hero-panel{padding:28px 20px;border-radius:22px;}
  .hero-panel h1{font-size:30px;}
  .hero-lead{font-size:15px;}
  .hero-actions .btn{flex:1 1 auto;}
  .badge b{font-size:18px;}
  .masonry{column-count:1;}
  .block-head h2,.faq-aside h2,.cta-band h2{font-size:22px;}
  .steps{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-actions .btn{width:100%;}
  .cta-band h2{font-size:22px;}
}
@media (max-width:520px){
  .hero-badges{gap:10px;}
  .badge{flex:1 1 100%;}
  .hero-panel h1{font-size:26px;}
  .entry-body{padding:18px;}
  .trust-pill{height:auto;padding:10px 14px;line-height:1.5;}
}

/* roulang page: category2 */
:root{
  --ink900:#0A2A20;
  --brand700:#0E5140;
  --brand500:#14805F;
  --lime:#B6F13C;
  --promo1:#FF5A2B;
  --promo2:#FFB03A;
  --bg:#F5F7F2;
  --bg-soft:#EAF2E9;
  --card:#FFFFFF;
  --border:#DCE7DE;
  --text:#12211C;
  --text2:#4A5C55;
  --text3:#86968F;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:28px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(10,42,32,.05),0 10px 30px -18px rgba(10,42,32,.25);
  --shadow-2:0 18px 44px -20px rgba(14,81,64,.35);
  --sec:88px;
  --font:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  text-align:left;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4,p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(245,247,242,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
}
.header-inner{
  max-width:1360px;margin:0 auto;padding:0 24px;
  height:68px;display:flex;align-items:center;gap:28px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:11px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand700),var(--brand500));
  display:grid;place-items:center;
}
.brand-mark svg{width:22px;height:22px;display:block;}
.brand-word{font-size:18px;font-weight:700;letter-spacing:-.2px;color:var(--ink900);white-space:nowrap;}
.brand-word span{color:var(--brand500);}
.nav{display:flex;align-items:center;gap:4px;flex:1 1 auto;}
.nav-link{
  position:relative;padding:9px 14px;border-radius:var(--r-pill);
  font-size:14.5px;color:var(--text2);font-weight:500;
  transition:color .18s ease,background-color .18s ease;
  white-space:nowrap;
}
.nav-link:hover{color:var(--brand700);background:var(--bg-soft);}
.nav-link.is-active{color:var(--brand700);font-weight:700;}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--lime);border-radius:2px;
}
.header-tools{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.cmd-search{
  display:flex;align-items:center;gap:8px;
  width:262px;height:40px;padding:0 12px;
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-md);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.cmd-search:focus-within{border-color:var(--brand500);box-shadow:0 0 0 3px rgba(182,241,60,.32);}
.cmd-search svg{width:16px;height:16px;color:var(--text3);flex:0 0 auto;}
.cmd-search input{
  flex:1 1 auto;min-width:0;border:0;background:transparent;outline:none;font-size:14px;
}
.cmd-search input::placeholder{color:var(--text3);}
.cmd-search kbd{
  font-family:var(--font);font-size:11px;color:var(--text3);
  border:1px solid var(--border);border-radius:6px;padding:1px 6px;background:var(--bg);
}
.quick-link{font-size:14px;color:var(--text2);font-weight:500;transition:color .18s ease;}
.quick-link:hover{color:var(--brand700);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;cursor:pointer;border:1px solid transparent;
  transition:background-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--lime);color:var(--ink900);}
.btn-primary:hover{background:var(--brand700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;border:1.5px solid var(--brand700);color:var(--brand700);}
.btn-ghost:hover{background:var(--bg-soft);}
.btn-ghost-light{background:transparent;border:1.5px solid rgba(255,255,255,.5);color:#fff;}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);border-color:var(--lime);color:var(--lime);}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--border);background:var(--card);cursor:pointer;position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:50%;width:18px;height:2px;background:var(--ink900);
  border-radius:2px;transform:translateX(-50%);
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.drawer-search{display:none;}

/* ---------- breadcrumb ---------- */
.crumb{padding:22px 0 0;}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:13.5px;color:var(--text3);}
.crumb li{display:flex;align-items:center;gap:6px;}
.crumb a{color:var(--text2);transition:color .18s ease;}
.crumb a:hover{color:var(--brand700);}
.crumb li[aria-current] span{color:var(--brand700);font-weight:600;}

/* ---------- category hero ---------- */
.cat-hero{
  margin-top:20px;border-radius:var(--r-xl);overflow:hidden;position:relative;
  background:linear-gradient(135deg,var(--brand700) 0%,var(--brand500) 60%,#0A2A20 100%);
  color:#fff;padding:52px 48px;box-shadow:var(--shadow-1);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  opacity:.22;mix-blend-mode:luminosity;
}
.cat-hero::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(182,241,60,.35),rgba(182,241,60,0) 68%);
}
.cat-hero-inner{position:relative;z-index:2;max-width:820px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px;}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 13px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;background:rgba(255,255,255,.14);color:#fff;
  border:1px solid rgba(255,255,255,.22);
}
.cat-hero h1{font-size:44px;line-height:1.25;font-weight:800;letter-spacing:-.5px;}
.cat-hero h1 em{font-style:normal;color:var(--lime);}
.cat-hero p{margin-top:18px;font-size:16.5px;color:rgba(255,255,255,.86);max-width:720px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}

/* ---------- layout ---------- */
.section{padding-top:var(--sec);}
.layout{display:grid;grid-template-columns:4fr 8fr;gap:24px;align-items:start;}
.toc{
  position:sticky;top:96px;
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:22px 20px;box-shadow:var(--shadow-1);
}
.toc h2{font-size:13px;letter-spacing:.08em;color:var(--text3);font-weight:700;margin-bottom:14px;}
.toc a{
  display:block;padding:9px 12px;border-radius:var(--r-sm);font-size:14px;color:var(--text2);
  border-left:3px solid transparent;transition:all .18s ease;line-height:1.5;
}
.toc a:hover{background:var(--bg-soft);color:var(--brand700);}
.toc a.is-current{background:var(--bg-soft);color:var(--brand700);font-weight:700;border-left-color:var(--lime);}

/* ---------- article ---------- */
.article-block{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-xl);
  padding:40px 44px;box-shadow:var(--shadow-1);
}
.article-block > section{scroll-margin-top:104px;}
.article-block > section + section{margin-top:52px;padding-top:52px;border-top:1px dashed var(--border);}
.article-block h2{
  font-size:28px;line-height:1.3;font-weight:800;color:var(--ink900);letter-spacing:-.3px;
  display:flex;gap:12px;align-items:baseline;
}
.article-block h2 .idx{
  font-size:16px;color:var(--brand500);font-weight:800;font-variant-numeric:tabular-nums;
}
.article-block p{margin-top:18px;font-size:16px;color:var(--text2);line-height:1.85;}
.article-block strong{color:var(--text);font-weight:700;}
.figure{margin-top:24px;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--border);background:var(--bg-soft);}
.figure img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .45s ease;}
.figure:hover img{transform:scale(1.03);}
.figure figcaption{padding:12px 18px;font-size:13px;color:var(--text3);background:var(--card);border-top:1px solid var(--border);}
.checklist{margin-top:20px;display:grid;gap:10px;}
.checklist li{
  display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--text2);
  background:var(--bg-soft);border-radius:var(--r-md);padding:12px 16px;line-height:1.7;
}
.checklist li::before{content:"";flex:0 0 auto;width:8px;height:8px;margin-top:8px;border-radius:2px;background:var(--brand500);}
.note{
  margin-top:22px;border-left:4px solid var(--lime);background:var(--bg-soft);
  border-radius:0 var(--r-md) var(--r-md) 0;padding:16px 20px;font-size:15px;color:var(--text2);
}

/* ---------- compare ---------- */
.compare-wrap{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-xl);
  padding:36px 40px;box-shadow:var(--shadow-1);scroll-margin-top:104px;
}
.compare-title{display:flex;flex-wrap:wrap;align-items:baseline;gap:12px;justify-content:space-between;margin-bottom:22px;}
.compare-title h2{font-size:28px;font-weight:800;color:var(--ink900);letter-spacing:-.3px;}
.compare-title span{font-size:14px;color:var(--text3);}
.compare{border:1px solid var(--border);border-radius:var(--r-lg);overflow:hidden;}
.compare-row{
  display:grid;grid-template-columns:1fr 1.3fr 1.7fr 1.1fr;gap:16px;
  padding:18px 22px;align-items:center;
}
.compare-row + .compare-row{border-top:1px dashed var(--border);}
.compare-row.head{background:var(--ink900);color:#fff;font-weight:700;font-size:14px;}
.compare-row.head .cell{color:#fff;}
.compare-row:nth-child(odd):not(.head){background:#FBFDFA;}
.cell{font-size:14.5px;color:var(--text2);line-height:1.7;}
.cell.lv{font-weight:800;color:var(--brand700);font-variant-numeric:tabular-nums;}
.pill-lime{
  display:inline-flex;align-items:center;height:26px;padding:0 11px;border-radius:var(--r-pill);
  background:var(--lime);color:var(--ink900);font-size:12.5px;font-weight:700;
}
.pill-soft{
  display:inline-flex;align-items:center;height:26px;padding:0 11px;border-radius:var(--r-pill);
  background:var(--bg-soft);color:var(--brand700);font-size:12.5px;font-weight:700;
}

/* ---------- cta band ---------- */
.cta-band{
  margin-top:var(--sec);
  background:var(--ink900);border-radius:var(--r-xl);position:relative;overflow:hidden;
  padding:52px 48px;color:#fff;
}
.cta-band::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;
  background:linear-gradient(90deg,var(--promo1),var(--promo2));
}
.cta-band::after{
  content:"";position:absolute;left:-80px;bottom:-140px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(20,128,95,.55),rgba(20,128,95,0) 70%);
}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between;}
.cta-inner h2{font-size:28px;font-weight:800;letter-spacing:-.3px;}
.cta-inner p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.74);max-width:520px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- back to top ---------- */
.back-top{
  position:fixed;right:24px;bottom:28px;z-index:70;
  width:48px;height:48px;border-radius:var(--r-pill);
  background:var(--card);border:1px solid var(--border);box-shadow:var(--shadow-1);
  display:grid;place-items:center;cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s ease,border-color .18s ease;
}
.back-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{border-color:var(--lime);}
.back-top svg{width:18px;height:18px;color:var(--brand700);}

/* ---------- footer ---------- */
.site-footer{margin-top:var(--sec);background:var(--ink900);color:rgba(255,255,255,.72);padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.site-footer .brand-word{color:#fff;}
.site-footer .brand-word span{color:var(--lime);}
.site-footer p{font-size:14px;line-height:1.8;max-width:320px;color:rgba(255,255,255,.68);}
.site-footer h4{font-size:14px;color:#fff;font-weight:700;margin-bottom:16px;}
.footer-links{display:grid;gap:10px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72);transition:color .18s ease;}
.footer-links a:hover{color:var(--lime);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{max-width:1080px;}
  .cmd-search{width:220px;}
  .cat-hero h1{font-size:38px;}
}
@media (max-width:1023px){
  :root{--sec:64px;}
  .header-inner{gap:16px;}
  .nav{display:none;}
  .cmd-search{display:none;}
  .quick-link{display:none;}
  .nav-toggle{display:block;}
  .layout{grid-template-columns:1fr;}
  .toc{position:static;order:-1;}
  .article-block{padding:32px 28px;}
  .article-block h2{font-size:24px;}
  .cat-hero{padding:40px 30px;}
  .cat-hero h1{font-size:32px;}
  .compare-wrap{padding:28px 24px;}
  .compare-title h2{font-size:24px;}
  .compare-row{grid-template-columns:1fr 1fr;gap:10px 16px;}
  .compare-row.head{display:none;}
  .cell::before{
    content:attr(data-label);display:block;font-size:12px;color:var(--text3);margin-bottom:3px;
  }
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-band{padding:40px 30px;}
  /* drawer */
  .nav.is-open{
    display:flex;position:fixed;top:0;right:0;bottom:0;width:min(86vw,360px);
    background:var(--card);flex-direction:column;align-items:stretch;gap:4px;
    padding:84px 20px 24px;box-shadow:-20px 0 50px -20px rgba(10,42,32,.35);
    z-index:90;overflow-y:auto;
  }
  .nav.is-open .nav-link{
    padding:14px 16px;border-radius:var(--r-md);font-size:16px;line-height:1.2;
  }
  .nav.is-open .nav-link.is-active::after{display:none;}
  .nav.is-open .nav-link.is-active{background:var(--bg-soft);}
  .drawer-search{display:flex;margin-bottom:14px;}
}
@media (max-width:767px){
  :root{--sec:48px;}
  .container{padding:0 18px;}
  .header-inner{padding:0 18px;height:60px;}
  .brand-word{font-size:16px;}
  .cat-hero{margin-top:14px;border-radius:var(--r-lg);padding:32px 22px;}
  .cat-hero h1{font-size:28px;}
  .cat-hero p{font-size:15px;}
  .article-block{border-radius:var(--r-lg);padding:26px 20px;}
  .article-block h2{font-size:22px;}
  .article-block p{font-size:15.5px;}
  .figure{border-radius:var(--r-md);}
  .compare-wrap{border-radius:var(--r-lg);padding:24px 18px;}
  .compare-row{grid-template-columns:1fr;padding:16px 18px;}
  .cta-band{border-radius:var(--r-lg);padding:32px 22px;}
  .cta-inner h2{font-size:22px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .back-top{right:16px;bottom:18px;}
}
@media (max-width:520px){
  .cat-hero h1{font-size:25px;}
  .tag{height:26px;font-size:12px;}
  .btn{height:44px;padding:0 18px;font-size:14.5px;}
  .hero-actions .btn{width:100%;}
}

/* roulang page: category3 */
:root{
  --ink900:#0A2A20;
  --brand700:#0E5140;
  --brand500:#14805F;
  --lime:#B6F13C;
  --promo1:#FF5A2B;
  --promo2:#FFB03A;
  --bg:#F5F7F2;
  --soft:#EAF2E9;
  --card:#FFFFFF;
  --border:#DCE7DE;
  --text:#12211C;
  --text2:#4A5C55;
  --text3:#86968F;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:28px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(10,42,32,.05),0 10px 30px -18px rgba(10,42,32,.25);
  --sh-2:0 18px 44px -20px rgba(14,81,64,.35);
  --sec:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  text-align:left;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sec) 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-head h2{font-size:28px;color:var(--ink900)}
.section-head p{color:var(--text2);font-size:15px;margin-top:10px;max-width:640px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand700);
  background:var(--soft);border:1px solid var(--border);
  border-radius:var(--r-pill);padding:6px 14px;
}
.eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--lime)}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(245,247,242,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
}
.header-inner{
  max-width:1360px;margin:0 auto;padding:0 24px;height:68px;
  display:flex;align-items:center;gap:28px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:12px;
  background:var(--brand700);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px -10px rgba(10,42,32,.8);
}
.brand-mark svg{width:22px;height:22px}
.brand-word{font-size:18px;font-weight:700;color:var(--ink900);letter-spacing:-.01em}
.brand-word span{color:var(--brand500);font-weight:600;margin-left:2px}
.nav{display:flex;align-items:center;gap:4px;flex:1}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;height:38px;padding:0 14px;
  border-radius:var(--r-pill);
  font-size:15px;color:var(--text2);font-weight:500;
  transition:color .2s,background .2s;
}
.nav-link:hover{color:var(--brand700);background:var(--soft)}
.nav-link.is-active{color:var(--ink900);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--lime);
}
.header-tools{display:flex;align-items:center;gap:12px;flex-shrink:0}
.cmd-search{
  display:flex;align-items:center;gap:8px;
  width:262px;height:42px;padding:0 12px;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-md);
  transition:border-color .2s,box-shadow .2s;
}
.cmd-search:focus-within{border-color:var(--brand500);box-shadow:0 0 0 4px rgba(182,241,60,.30)}
.cmd-search svg{width:17px;height:17px;color:var(--text3);flex-shrink:0}
.cmd-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--text);
}
.cmd-search input::placeholder{color:var(--text3)}
.cmd-search kbd{
  font-family:inherit;font-size:11px;color:var(--text3);
  border:1px solid var(--border);border-radius:6px;
  padding:1px 6px;background:var(--soft);
}
.quick-link{font-size:14px;color:var(--text2);padding:6px 4px;transition:color .2s}
.quick-link:hover{color:var(--brand700)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--border);background:#fff;cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-toggle span{
  position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--ink900);
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink900);
  transition:transform .2s;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;border:1.5px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:background .2s,color .2s,border-color .2s,transform .18s,box-shadow .2s,filter .2s;
}
.btn-primary{background:var(--lime);color:var(--ink900)}
.btn-primary:hover{background:var(--brand700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{border-color:var(--brand700);color:var(--brand700);background:transparent}
.btn-ghost:hover{background:var(--soft)}
.btn-promo{background:linear-gradient(135deg,var(--promo1),var(--promo2));color:#fff}
.btn-promo:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand700);font-size:14px;font-weight:600;
}
.text-link::after{content:"→";transition:transform .2s,color .2s}
.text-link:hover::after{transform:translateX(3px);color:var(--brand500)}

/* ============ 面包屑 ============ */
.crumb{padding:26px 0 0}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text3)}
.crumb li{display:flex;align-items:center;gap:8px}
.crumb li+li::before{content:"/";color:var(--border)}
.crumb a{color:var(--text2);transition:color .2s}
.crumb a:hover{color:var(--brand700)}
.crumb .current{color:var(--ink900);font-weight:600}

/* ============ 分类首屏 ============ */
.cat-hero{padding:28px 0 0}
.cat-hero h1{
  font-size:44px;color:var(--ink900);margin:18px 0 0;max-width:900px;
}
.cat-hero h1 em{font-style:normal;color:var(--brand700);background:linear-gradient(180deg,transparent 62%,rgba(182,241,60,.55) 62%)}
.lead{margin-top:20px;font-size:17px;color:var(--text2);max-width:820px}
.stat-bar{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;
  margin-top:40px;
}
.stat{
  position:relative;background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-lg);padding:20px 22px 20px 26px;box-shadow:var(--sh-1);
  overflow:hidden;
}
.stat::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;
  border-radius:0 3px 3px 0;background:var(--lime);
}
.stat-num{
  display:block;font-size:30px;font-weight:700;color:var(--ink900);
  font-variant-numeric:tabular-nums;line-height:1.1;
}
.stat-num i{font-style:normal;font-size:15px;font-weight:600;color:var(--brand500);margin-left:4px}
.stat-label{display:block;margin-top:8px;font-size:14px;color:var(--text2)}

/* ============ 场景网格 ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.diag-card{
  display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-xl);padding:20px;box-shadow:var(--sh-1);
  transition:transform .22s,box-shadow .22s,border-color .22s;
}
.diag-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--lime)}
.diag-media{position:relative;border-radius:var(--r-lg);overflow:hidden;background:var(--soft);aspect-ratio:16/10}
.diag-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.diag-card:hover .diag-media img{transform:scale(1.04)}
.diag-no{
  position:absolute;left:12px;top:12px;
  background:rgba(10,42,32,.86);color:var(--lime);
  font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
  padding:4px 12px;border-radius:var(--r-pill);
}
.diag-body{padding:18px 4px 0;flex:1}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);font-size:12px;font-weight:600;
  background:var(--soft);color:var(--brand700);border:1px solid var(--border);
}
.tag-warn{background:#FFF3ED;color:#B43A12;border-color:#FFD9C7}
.diag-body h3{font-size:19px;color:var(--ink900);margin:12px 0 0}
.scene{margin-top:10px;font-size:14.5px;color:var(--text2)}
.check-list{margin-top:14px;display:grid;gap:9px}
.check-list li{
  position:relative;padding-left:24px;font-size:14px;color:var(--text2);line-height:1.65;
}
.check-list li::before{
  content:"✓";position:absolute;left:0;top:0;
  color:var(--brand500);font-weight:700;font-size:13px;
}
.diag-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:18px;padding:14px 4px 2px;border-top:1px dashed var(--border);
}
.meta-mini{font-size:13px;color:var(--text3);font-variant-numeric:tabular-nums}

/* ============ 深色协助通道 ============ */
.cta-band{
  position:relative;border-radius:var(--r-xl);overflow:hidden;
  background-image:linear-gradient(rgba(10,42,32,.94),rgba(10,42,32,.94)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  padding:44px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  border-top:4px solid transparent;
}
.cta-band::before{
  content:"";position:absolute;left:0;right:0;top:0;height:4px;
  background:linear-gradient(90deg,var(--promo1),var(--promo2));
}
.cta-band h2{font-size:26px;color:#fff;max-width:560px}
.cta-band p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.76);max-width:600px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.5);color:#fff}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.12)}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.faq-side{position:sticky;top:104px}
.faq-side h2{font-size:28px;color:var(--ink900)}
.faq-side p{margin-top:14px;color:var(--text2);font-size:15px}
.faq-side .btn{margin-top:22px}
.faq{display:grid;gap:12px}
.faq-item{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);
  overflow:hidden;transition:box-shadow .22s,border-color .22s;
}
.faq-item.is-open{border-color:var(--lime);box-shadow:var(--sh-1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;background:transparent;border:0;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--ink900);text-align:left;
}
.faq-icon{
  position:relative;flex-shrink:0;width:20px;height:20px;border-radius:50%;
  background:var(--soft);transition:transform .25s,background .25s;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;width:10px;height:2px;border-radius:2px;
  background:var(--brand700);transform:translate(-50%,-50%);
}
.faq-icon::after{transform:translate(-50%,-50%) rotate(90deg)}
.faq-item.is-open .faq-icon{background:var(--lime);transform:rotate(135deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 22px 22px;font-size:15px;color:var(--text2);line-height:1.8}
.faq-item.is-open .faq-a{max-height:320px}

/* ============ 表单 ============ */
.form-layout{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.form-side h2{font-size:28px;color:var(--ink900)}
.form-side p{margin-top:14px;color:var(--text2);font-size:15px}
.trust-list{margin-top:26px;display:grid;gap:14px}
.trust-list li{
  position:relative;padding-left:26px;font-size:14.5px;color:var(--text2);
}
.trust-list li::before{
  content:"";position:absolute;left:0;top:8px;width:10px;height:10px;border-radius:3px;
  background:linear-gradient(135deg,var(--brand500),var(--lime));
}
.form-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-xl);
  padding:32px;box-shadow:var(--sh-1);
}
.form-row{display:grid;gap:18px}
.field{display:grid;gap:8px}
.field label{font-size:14px;font-weight:600;color:var(--ink900)}
.field .hint{font-size:12.5px;color:var(--text3);font-weight:400}
.field input,.field textarea{
  width:100%;min-height:48px;padding:12px 14px;
  border:1px solid var(--border);border-radius:12px;background:#fff;
  outline:none;transition:border-color .2s,box-shadow .2s;font-size:15px;
}
.field textarea{min-height:112px;resize:vertical;line-height:1.7}
.field input:focus,.field textarea:focus{border-color:var(--brand500);box-shadow:0 0 0 3px rgba(182,241,60,.35)}
.field.has-error input,.field.has-error textarea{border-color:var(--promo1);box-shadow:0 0 0 3px rgba(255,90,43,.14)}
.err-msg{display:none;font-size:12.5px;color:#B43A12}
.field.has-error .err-msg{display:block}
.notice{
  display:none;align-items:center;gap:10px;
  padding:12px 16px;border-radius:12px;font-size:14px;margin-bottom:20px;
}
.notice.ok{display:flex;background:var(--soft);color:var(--brand700);border:1px solid #C9E6D6}
.notice.bad{display:flex;background:#FFF3ED;color:#B43A12;border:1px solid #FFD9C7}
.form-card .btn{margin-top:22px}
.form-tip{margin-top:14px;font-size:12.5px;color:var(--text3)}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink900);color:#fff;margin-top:var(--sec);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.site-footer .brand-word{color:#fff}
.site-footer .brand-word span{color:var(--lime)}
.site-footer p{color:rgba(255,255,255,.7);font-size:14px;max-width:320px}
.site-footer h4{font-size:15px;color:#fff;margin-bottom:16px}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72);transition:color .2s}
.footer-links a:hover{color:var(--lime)}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--sec:72px}
  .container{max-width:1080px}
  .cat-hero h1{font-size:38px}
  .cmd-search{width:220px}
}
@media (max-width:1023px){
  .header-inner{height:60px;gap:16px}
  .nav{
    position:fixed;top:60px;right:0;z-index:70;
    width:min(320px,86vw);height:calc(100vh - 60px);
    background:#fff;border-left:1px solid var(--border);
    flex-direction:column;align-items:stretch;gap:0;
    padding:18px 16px 32px;overflow-y:auto;
    transform:translateX(100%);transition:transform .26s ease;
    box-shadow:-18px 0 40px -24px rgba(10,42,32,.4);
  }
  .nav.is-open{transform:translateX(0)}
  .nav-link{height:48px;padding:0 14px;border-radius:12px;font-size:16px}
  .nav-link.is-active{background:var(--soft)}
  .nav-link.is-active::after{display:none}
  .cmd-search,.quick-link{display:none}
  .nav-toggle{display:inline-flex}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .faq-layout,.form-layout{grid-template-columns:1fr;gap:32px}
  .faq-side{position:static}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cat-hero h1{font-size:32px}
  .cta-band{padding:36px 28px}
}
@media (max-width:767px){
  :root{--sec:48px}
  .container{padding:0 18px}
  .header-tools{gap:8px}
  .cat-hero{padding-top:20px}
  .cat-hero h1{font-size:30px}
  .lead{font-size:15.5px}
  .stat-bar{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:28px}
  .stat{border-radius:var(--r-lg);padding:16px 16px 16px 22px}
  .stat-num{font-size:24px}
  .grid-3{grid-template-columns:1fr;gap:18px}
  .diag-card{border-radius:var(--r-lg)}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;margin-bottom:24px}
  .section-head h2{font-size:22px}
  .cat-hero h1{font-size:28px}
  .cta-band{border-radius:var(--r-lg);padding:28px 22px}
  .cta-band h2{font-size:21px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .form-card{padding:22px;border-radius:var(--r-lg)}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .faq-q{padding:16px 16px;font-size:15px}
  .faq-a p{padding:0 16px 18px}
}
@media (max-width:519px){
  .stat-bar{grid-template-columns:1fr}
  .btn{width:100%}
  .nav-toggle,.btn-sm{width:auto}
}