/* roulang page: index */
:root{
  --brand-900:#0B2E2A;
  --brand-700:#11453E;
  --brand-500:#1C6B5F;
  --brand-200:#A9CCC3;
  --accent-500:#E0763C;
  --accent-600:#C25E29;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --surface-2:#EFEBE3;
  --ink-900:#101413;
  --ink-700:#2E3A38;
  --ink-500:#5C6B68;
  --line:#E2DED5;
  --ok:#2F7D5B;
  --r-card:16px;
  --r-img:12px;
  --r-input:10px;
  --r-pill:999px;
  --r-modal:20px;
  --shadow-1:0 1px 2px rgba(16,20,19,.04), 0 8px 24px rgba(16,20,19,.06);
  --shadow-2:0 12px 32px rgba(11,46,42,.14);
  --ease:cubic-bezier(.22,.61,.36,1);
  --t:200ms var(--ease);
  --gap:24px;
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  background:var(--paper);
  color:var(--ink-700);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.78;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-500);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--accent-500);}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--accent-500);
  outline-offset:2px;
}
button{font-family:inherit;cursor:pointer;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--sec) 0;}
.section-alt{background:var(--surface-2);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px;}
.section-title{font-size:clamp(24px,2.6vw,36px);font-weight:700;line-height:1.28;color:var(--ink-900);letter-spacing:-.01em;}
.section-desc{margin-top:12px;font-size:16px;color:var(--ink-500);max-width:640px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--brand-700);background:rgba(169,204,195,.32);
  padding:6px 14px;border-radius:var(--r-pill);margin-bottom:18px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-500);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background-color var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
  white-space:nowrap;
}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 6px 18px rgba(224,118,60,.24);}
.btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(194,94,41,.28);}
.btn-outline{background:transparent;color:var(--brand-700);border-color:var(--brand-700);}
.btn-outline:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);}
.btn-sm{min-height:40px;padding:0 20px;font-size:14px;}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--brand-500);}
.link-arrow i{transition:transform var(--t);font-size:12px;}
.link-arrow:hover i{transform:translateX(4px);}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{position:fixed;top:16px;left:0;right:0;z-index:60;pointer-events:none;}
.nav-shell{
  pointer-events:auto;
  width:calc(100% - 32px);max-width:1080px;margin:0 auto;
  display:flex;align-items:center;gap:20px;
  padding:10px 22px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.72);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid var(--line);
  transition:background-color var(--t),box-shadow var(--t),padding var(--t);
}
.site-header.is-scrolled .nav-shell{
  background:rgba(255,255,255,.92);
  box-shadow:var(--shadow-1);
  padding:8px 22px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:26px;height:26px;border-radius:9px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--brand-700),var(--brand-500) 55%,var(--accent-500));
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:8px;border-radius:3px;
  background:var(--paper);opacity:.9;
}
.brand-text{font-size:17px;font-weight:800;color:var(--brand-900);letter-spacing:-.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  display:inline-flex;align-items:center;min-height:40px;padding:0 16px;
  border-radius:var(--r-pill);font-size:15px;font-weight:600;color:var(--ink-700);
  transition:background-color var(--t),color var(--t);
}
.nav-link:hover{background:rgba(169,204,195,.28);color:var(--brand-700);}
.nav-link.is-active{background:var(--brand-200);color:var(--brand-900);}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-pill);
  background:transparent;border:1px solid var(--line);
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--brand-900);transition:transform var(--t),opacity var(--t);}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg);}
body.nav-open .nav-toggle span:nth-child(2){opacity:0;}
body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- Hero ---------- */
.hero{padding:150px 0 64px;position:relative;overflow:hidden;}
.hero::before{
  content:"";position:absolute;top:-180px;right:-160px;width:520px;height:520px;
  border-radius:50%;background:radial-gradient(circle,rgba(169,204,195,.5),rgba(169,204,195,0) 68%);
  z-index:0;
}
.hero-inner{position:relative;z-index:1;}
.hero-title{
  font-size:clamp(30px,4.2vw,52px);font-weight:800;line-height:1.18;
  letter-spacing:-.02em;color:var(--ink-900);
}
.hero-sub{margin-top:20px;font-size:18px;line-height:1.7;color:var(--ink-700);max-width:520px;}
.hero-points{margin-top:22px;display:flex;flex-direction:column;gap:10px;}
.hero-points li{
  position:relative;padding-left:20px;font-size:16px;color:var(--ink-700);
}
.hero-points li::before{
  content:"";position:absolute;left:0;top:.68em;width:8px;height:8px;border-radius:50%;
  background:var(--accent-500);
}
.hero-cta{margin-top:34px;display:flex;flex-wrap:wrap;gap:14px;}
.hero-media{position:relative;margin-left:12px;}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-card);box-shadow:var(--shadow-2);
}
.hero-media::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-card);
  background:linear-gradient(180deg,rgba(11,46,42,.30),rgba(11,46,42,0) 55%);
  pointer-events:none;
}
.hero-float{
  position:absolute;left:-18px;bottom:-24px;width:250px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px 18px;box-shadow:var(--shadow-2);
}
.hero-float p{font-size:13.5px;line-height:1.65;color:var(--ink-700);margin-top:10px;}
.tag{
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:600;color:var(--brand-700);
  background:rgba(28,107,95,.10);padding:4px 12px;border-radius:var(--r-pill);
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;padding:4px 12px;border-radius:var(--r-pill);
}
.badge-soft{background:var(--brand-200);color:var(--brand-700);}
.badge-ok{background:rgba(47,125,91,.12);color:var(--ok);}
.badge-ok::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--ok);}
.trust-bar{
  margin-top:56px;display:flex;flex-wrap:wrap;gap:12px;
  padding:14px 18px;border-radius:var(--r-pill);
  background:var(--surface-2);border:1px solid var(--line);
}
.trust-item{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13.5px;color:var(--ink-500);
}
.trust-item i{color:var(--brand-500);font-size:12px;}
.trust-item + .trust-item{padding-left:16px;border-left:1px solid var(--line);}

/* ---------- 痛点提问区 ---------- */
.pain-grid{display:grid;gap:18px;}
.pain-card{
  display:flex;align-items:flex-start;gap:22px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px 26px;transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.pain-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--brand-200);}
.pain-num{
  font-size:34px;font-weight:800;line-height:1;letter-spacing:-.03em;
  color:var(--accent-500);flex:0 0 auto;min-width:52px;
}
.pain-q{font-size:20px;font-weight:700;color:var(--ink-900);line-height:1.45;}
.pain-note{margin-top:8px;font-size:14.5px;color:var(--ink-500);line-height:1.7;}

/* ---------- 方案卡片区 ---------- */
.plan-grid{display:grid;grid-template-columns:1fr 0.86fr;gap:var(--gap);align-items:stretch;}
.plan-col{display:grid;gap:var(--gap);}
.plan-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform var(--t),box-shadow var(--t);
}
.plan-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.plan-card-media{overflow:hidden;}
.plan-card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 400ms var(--ease);}
.plan-card:hover .plan-card-media img{transform:scale(1.04);}
.plan-card-body{padding:24px 26px 26px;display:flex;flex-direction:column;flex:1 1 auto;}
.plan-card h3{font-size:21px;font-weight:700;color:var(--ink-900);line-height:1.42;}
.plan-card p{margin-top:12px;font-size:15px;color:var(--ink-700);line-height:1.78;}
.list-square{margin-top:16px;display:flex;flex-direction:column;gap:9px;}
.list-square li{position:relative;padding-left:18px;font-size:14.5px;color:var(--ink-700);line-height:1.7;}
.list-square li::before{
  content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;
  background:var(--brand-500);border-radius:1px;
}
.plan-card .link-arrow{margin-top:auto;padding-top:20px;}
.plan-tall{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px 28px;display:flex;flex-direction:column;height:100%;
  transition:transform var(--t),box-shadow var(--t);
}
.plan-tall:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.plan-tall .plan-num{font-size:40px;}
.plan-tall h3{margin-top:16px;font-size:22px;font-weight:700;color:var(--ink-900);line-height:1.4;}
.plan-tall p{margin-top:12px;font-size:15px;color:var(--ink-700);line-height:1.78;}
.plan-tall .list-square{margin-top:18px;}
.plan-tall .btn{margin-top:auto;align-self:flex-start;margin-top:28px;}
.plan-wide{
  margin-top:var(--gap);display:grid;grid-template-columns:8fr 4fr;gap:var(--gap);
  align-items:center;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
}
.plan-wide-body{padding:32px 34px;}
.plan-wide h3{font-size:22px;font-weight:700;color:var(--ink-900);line-height:1.4;}
.plan-wide p{margin-top:12px;font-size:15px;color:var(--ink-700);line-height:1.78;max-width:560px;}
.plan-wide-media{overflow:hidden;height:100%;}
.plan-wide-media img{width:100%;height:100%;min-height:220px;object-fit:cover;}

/* ---------- 数据区 ---------- */
.stats-band{background:var(--brand-900);color:rgba(246,244,239,.86);}
.stats-band .section-title{color:#fff;}
.stats-band .section-desc{color:rgba(246,244,239,.66);}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);}
.stat{border-top:1px solid rgba(255,255,255,.14);padding-top:22px;}
.stat-num{
  font-size:clamp(40px,5vw,64px);font-weight:800;line-height:1;letter-spacing:-.03em;color:#fff;
  display:flex;align-items:baseline;gap:6px;
}
.stat-unit{font-size:16px;font-weight:600;color:var(--brand-200);letter-spacing:0;}
.stat-label{margin-top:12px;font-size:15px;font-weight:600;color:#fff;}
.stat-note{margin-top:8px;font-size:13px;color:rgba(255,255,255,.6);line-height:1.6;}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.news-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;color:inherit;
  transition:transform var(--t),box-shadow var(--t);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.news-thumb{overflow:hidden;}
.news-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 400ms var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto;}
.news-body .badge{align-self:flex-start;}
.news-title{
  margin-top:12px;font-size:17.5px;font-weight:700;line-height:1.5;color:var(--ink-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color var(--t);
}
.news-card:hover .news-title{color:var(--brand-500);}
.news-excerpt{
  margin-top:10px;font-size:14px;color:var(--ink-500);line-height:1.72;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:18px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ink-500);
}
.news-meta i{font-size:12px;color:var(--brand-500);transition:transform var(--t);}
.news-card:hover .news-meta i{transform:translateX(4px);}
.empty-state{
  grid-column:1 / -1;min-height:220px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:14px;text-align:center;
  background:var(--surface);border:1px dashed var(--line);border-radius:var(--r-card);
  padding:40px 24px;
}
.empty-state i{font-size:26px;color:var(--brand-200);}
.empty-state p{font-size:15px;color:var(--ink-500);}
.empty-state .btn{margin-top:6px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-list.accordion{background:transparent;border:0;}
.faq-list .accordion-item{border:0;background:transparent;}
.faq-list .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 4px;font-size:17px;font-weight:600;color:var(--ink-900);
  background:transparent;border-top:1px solid var(--line);
  position:relative;transition:color var(--t);
}
.faq-list .accordion-item:first-child .accordion-title{border-top:0;}
.faq-list .accordion-title::before{display:none;}
.faq-list .accordion-title:hover{color:var(--brand-500);}
.faq-icon{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  border:1px solid var(--brand-200);position:relative;transition:background-color var(--t),border-color var(--t);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand-700);
  transform:translate(-50%,-50%);transition:transform var(--t),background-color var(--t);
}
.faq-icon::before{width:9px;height:1.5px;}
.faq-icon::after{width:1.5px;height:9px;}
.faq-list .accordion-item.is-active .faq-icon{background:var(--accent-500);border-color:var(--accent-500);}
.faq-list .accordion-item.is-active .faq-icon::before{background:#fff;}
.faq-list .accordion-item.is-active .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;background:#fff;}
.faq-list .accordion-item.is-active .accordion-title{color:var(--brand-700);}
.faq-list .accordion-item.is-active .accordion-title::after{
  content:"";position:absolute;left:-16px;top:50%;transform:translateY(-50%);
  width:3px;height:26px;border-radius:2px;background:var(--accent-500);
}
.faq-list .accordion-content{
  padding:0 40px 22px 4px;border:0;background:transparent;
  font-size:15px;line-height:1.8;color:var(--ink-700);
}

/* ---------- 表单 / CTA ---------- */
.form-grid{display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:start;}
.form-aside h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.3;color:var(--ink-900);}
.form-aside > p{margin-top:16px;font-size:16px;color:var(--ink-500);max-width:520px;}
.aside-list{margin-top:28px;display:flex;flex-direction:column;gap:16px;}
.aside-list li{
  display:flex;gap:14px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:18px 20px;transition:box-shadow var(--t),transform var(--t);
}
.aside-list li:hover{transform:translateY(-4px);box-shadow:var(--shadow-1);}
.aside-list i{color:var(--accent-500);font-size:16px;margin-top:4px;}
.aside-list strong{display:block;font-size:15.5px;color:var(--ink-900);font-weight:700;}
.aside-list span{display:block;margin-top:4px;font-size:14px;color:var(--ink-500);line-height:1.7;}
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-modal);
  padding:30px;box-shadow:var(--shadow-1);
}
.form-card h3{font-size:19px;font-weight:700;color:var(--ink-900);}
.form-card .form-note{margin-top:8px;font-size:13.5px;color:var(--ink-500);}
.lead-form{margin-top:22px;display:grid;gap:16px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-700);margin-bottom:7px;}
.field input[type="text"],
.field input[type="tel"],
.field input[type="email"],
.field select,
.field textarea{
  width:100%;height:44px;padding:0 14px;font-size:15px;color:var(--ink-900);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-input);
  transition:border-color var(--t),box-shadow var(--t);font-family:inherit;
}
.field textarea{height:auto;min-height:88px;padding:11px 14px;line-height:1.7;resize:vertical;}
.field select{appearance:none;-webkit-appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink-500) 50%),linear-gradient(135deg,var(--ink-500) 50%,transparent 50%);background-position:calc(100% - 18px) 50%,calc(100% - 13px) 50%;background-size:5px 5px,5px 5px;background-repeat:no-repeat;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(28,107,95,.14);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--accent-600);}
.field-error{display:none;margin-top:6px;font-size:13px;color:var(--accent-600);}
.field.has-error .field-error{display:block;}
.checkbox-field{display:flex;align-items:flex-start;gap:10px;}
.checkbox-field input[type="checkbox"]{
  width:18px;height:18px;margin-top:3px;accent-color:var(--brand-500);flex:0 0 auto;
}
.checkbox-field label{margin:0;font-size:13.5px;font-weight:400;color:var(--ink-500);line-height:1.7;}
.privacy-note{margin-top:14px;font-size:13px;color:var(--ink-500);line-height:1.7;}
.form-feedback{margin-top:12px;font-size:14px;color:var(--ok);display:none;}
.form-feedback.is-on{display:block;}

/* ---------- 浮动按钮 ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:inline-flex;align-items:center;gap:8px;
  min-height:50px;padding:0 22px;border-radius:var(--r-pill);
  background:var(--accent-500);color:#fff;font-size:15px;font-weight:600;
  border:0;box-shadow:0 12px 28px rgba(194,94,41,.32);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity var(--t),transform var(--t),visibility var(--t),background-color var(--t);
}
.float-cta.is-on{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{background:var(--accent-600);}

/* ---------- 弹层 ---------- */
.reveal-overlay{background:rgba(11,46,42,.45);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);}
.reveal{
  border:0;border-radius:var(--r-modal);padding:0;background:var(--surface);
  box-shadow:0 24px 60px rgba(11,46,42,.28);max-width:560px;width:calc(100% - 32px);
}
.reveal .modal-inner{padding:28px 30px 30px;}
.reveal h3{font-size:20px;font-weight:700;color:var(--ink-900);}
.reveal .modal-sub{margin-top:8px;font-size:14px;color:var(--ink-500);}
.close-button{
  position:absolute;top:14px;right:14px;width:38px;height:38px;line-height:1;
  color:var(--ink-500);border-radius:50%;transition:background-color var(--t),color var(--t);
}
.close-button:hover{background:var(--surface-2);color:var(--ink-900);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.72);padding:72px 0 26px;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);max-width:340px;}
.footer-contact{margin-top:18px;font-size:14px;color:rgba(255,255,255,.8);line-height:2;}
.footer-title{font-size:14px;font-weight:700;color:#fff;letter-spacing:.04em;margin-bottom:16px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{
  font-size:14px;color:rgba(255,255,255,.72);min-height:44px;display:inline-flex;align-items:center;
  transition:color var(--t);
}
.footer-links a:hover{color:#fff;}
.footer-text{font-size:14px;color:rgba(255,255,255,.66);line-height:1.9;}
.footer-bottom{
  margin-top:52px;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);
}
.footer-bottom a{color:rgba(255,255,255,.7);}
.footer-bottom a:hover{color:#fff;}

/* ---------- 动效 ---------- */
.fade-up{opacity:0;transform:translateY(16px);transition:opacity 620ms var(--ease),transform 620ms var(--ease);}
.fade-up.is-in{opacity:1;transform:translateY(0);}
.fade-up[data-delay="1"]{transition-delay:60ms;}
.fade-up[data-delay="2"]{transition-delay:120ms;}
.fade-up[data-delay="3"]{transition-delay:180ms;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--sec:72px;}
}
@media (max-width:1023px){
  :root{--sec:72px;}
  .nav-toggle{display:flex;}
  .nav-links{
    position:fixed;left:16px;right:16px;top:82px;
    flex-direction:column;align-items:stretch;gap:4px;
    background:rgba(255,255,255,.97);
    -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
    border:1px solid var(--line);border-radius:20px;
    padding:14px;box-shadow:var(--shadow-2);
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity var(--t),transform var(--t),visibility var(--t);
    max-height:70vh;overflow:auto;
  }
  body.nav-open .nav-links{opacity:1;visibility:visible;transform:translateY(0);}
  .nav-link{min-height:48px;padding:0 16px;border-radius:12px;}
  .nav-link.is-active{background:rgba(169,204,195,.30);box-shadow:inset 3px 0 0 var(--accent-500);}
  .nav-actions .btn{display:none;}
  .hero{padding:126px 0 48px;}
  .hero-media{margin:40px 0 0;}
  .hero-float{left:16px;bottom:-18px;width:220px;}
  .plan-grid{grid-template-columns:1fr;}
  .plan-wide{grid-template-columns:1fr;}
  .plan-wide-media img{min-height:220px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .form-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .reveal{bottom:0;left:0;right:0;top:auto;width:100%;max-width:100%;margin:0;border-radius:20px 20px 0 0;}
}
@media (max-width:639px){
  :root{--sec:52px;--gap:16px;}
  .container{padding:0 16px;}
  .nav-shell{width:calc(100% - 24px);padding:8px 16px;}
  .brand-text{font-size:15.5px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px;}
  .hero{padding:118px 0 40px;}
  .hero-sub{font-size:16.5px;}
  .hero-cta .btn{flex:1 1 auto;}
  .trust-bar{border-radius:var(--r-card);}
  .trust-item + .trust-item{padding-left:0;border-left:0;}
  .pain-card{flex-direction:column;gap:12px;padding:22px;}
  .pain-num{font-size:28px;min-width:auto;}
  .news-grid{grid-template-columns:1fr;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:20px;}
  .faq-list .accordion-item.is-active .accordion-title::after{left:-8px;}
  .faq-list .accordion-content{padding-right:0;}
  .form-card{padding:22px;}
  .footer-grid{grid-template-columns:1fr;}
  .float-cta{right:16px;bottom:16px;min-height:48px;padding:0 18px;font-size:14px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  .fade-up{opacity:1;transform:none;}
}

/* roulang page: article */
:root{
  --brand-900:#0B2E2A;
  --brand-700:#11453E;
  --brand-500:#1C6B5F;
  --brand-200:#A9CCC3;
  --accent-500:#E0763C;
  --accent-600:#C25E29;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --surface-2:#EFEBE3;
  --ink-900:#101413;
  --ink-700:#2E3A38;
  --ink-500:#5C6B68;
  --line:#E2DED5;
  --ok:#2F7D5B;
  --shadow-1:0 1px 2px rgba(16,20,19,.04), 0 8px 24px rgba(16,20,19,.06);
  --shadow-2:0 12px 32px rgba(11,46,42,.14);
  --r-card:16px;
  --r-img:12px;
  --r-input:10px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-h:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;line-height:1.78;color:var(--ink-700);background:var(--paper);
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand-500);text-decoration:none;transition:color 200ms var(--ease)}
a:hover{color:var(--brand-700)}
h1,h2,h3,h4{color:var(--ink-900);margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0 0 1.1em}
ul,ol{margin:0 0 1.1em;padding-left:1.2em}
button,input,select,textarea{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--brand-500);text-transform:uppercase}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--accent-500);border-radius:2px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.section-head h2{font-size:clamp(24px,2.6vw,36px);line-height:1.28}
.section-head p{margin:8px 0 0;color:var(--ink-500);font-size:15px;max-width:52ch}

/* ---------- 导航 ---------- */
.site-header{position:fixed;top:16px;left:0;right:0;z-index:80;padding:0 20px;pointer-events:none}
.nav-shell{
  pointer-events:auto;max-width:1080px;margin:0 auto;display:flex;align-items:center;gap:14px;
  padding:10px 22px;border-radius:999px;border:1px solid var(--line);
  background:rgba(255,255,255,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:background 300ms var(--ease),box-shadow 300ms var(--ease),padding 300ms var(--ease);
}
.site-header.is-scrolled .nav-shell{background:rgba(255,255,255,.92);box-shadow:var(--shadow-1);padding:7px 22px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:var(--ink-900);letter-spacing:-.01em;white-space:nowrap}
.brand:hover{color:var(--ink-900)}
.brand-mark{width:22px;height:22px;border-radius:8px;background:linear-gradient(135deg,var(--brand-700),var(--brand-500));position:relative;flex:0 0 auto;box-shadow:inset 0 0 0 1px rgba(255,255,255,.3)}
.brand-mark::after{content:"";position:absolute;inset:7px;border-radius:3px;background:var(--accent-500)}
.nav-links{display:flex;align-items:center;gap:4px;flex:1;justify-content:center}
.nav-link{display:inline-flex;align-items:center;min-height:44px;padding:8px 15px;border-radius:999px;font-size:15px;font-weight:500;color:var(--ink-700);transition:background 200ms var(--ease),color 200ms var(--ease)}
.nav-link:hover{background:var(--surface-2);color:var(--brand-700)}
.nav-link.is-active{background:var(--brand-200);color:var(--brand-700);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{display:none;width:44px;height:44px;border-radius:999px;border:1px solid var(--line);background:var(--surface);flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;transition:transform 200ms var(--ease),opacity 200ms var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;
  padding:13px 26px;border-radius:999px;border:1px solid transparent;font-size:15px;font-weight:600;
  line-height:1;cursor:pointer;text-align:center;transition:all 200ms var(--ease);
}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 6px 18px rgba(224,118,60,.26)}
.btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(194,94,41,.3)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{border-color:var(--brand-700);color:var(--brand-700);background:transparent}
.btn-ghost:hover{background:var(--brand-700);color:#fff}
.btn-onDark{border-color:rgba(255,255,255,.5);color:#fff;background:transparent}
.btn-onDark:hover{background:#fff;color:var(--brand-900);border-color:#fff}
.btn-sm{padding:10px 20px;font-size:14px;min-height:40px}
.btn-block{width:100%}
.text-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--brand-500)}
.text-link i{transition:transform 200ms var(--ease)}
.text-link:hover i{transform:translateX(4px)}

/* ---------- 面包屑 / 文章头 ---------- */
.article-head{
  position:relative;padding:124px 0 64px;color:#fff;
  background-image:linear-gradient(180deg,rgba(11,46,42,.93),rgba(11,46,42,.8)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.breadcrumb{font-size:13px;color:rgba(255,255,255,.72);margin-bottom:22px}
.breadcrumb ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:rgba(255,255,255,.4)}
.breadcrumb a{color:rgba(255,255,255,.8)}
.breadcrumb a:hover{color:#fff}
.breadcrumb [aria-current]{color:#fff;font-weight:600}
.head-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:rgba(169,204,195,.18);border:1px solid rgba(169,204,195,.4);color:#CFE6DF;font-size:13px;font-weight:600;margin-bottom:18px}
.head-badge i{color:var(--accent-500)}
.article-head h1{color:#fff;font-size:clamp(28px,3.8vw,46px);line-height:1.2;font-weight:800;letter-spacing:-.02em;max-width:24ch}
.head-meta{display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:22px;font-size:14px;color:rgba(255,255,255,.72)}
.head-meta span{display:inline-flex;align-items:center;gap:8px}
.head-meta i{color:var(--brand-200)}

/* ---------- 正文布局 ---------- */
.article-main{padding:72px 0 96px}
.article-layout{display:grid;grid-template-columns:minmax(0,760px) 208px;gap:48px;justify-content:center;align-items:start}
.article-card{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:44px;box-shadow:var(--shadow-1)}
.article-body{font-size:17px;line-height:1.9;color:var(--ink-700)}
.article-body>*:first-child{margin-top:0}
.article-body h2{
  font-size:clamp(20px,2.1vw,26px);line-height:1.35;margin:2em 0 .8em;padding-left:14px;position:relative;font-weight:700;
}
.article-body h2::before{content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:4px;background:var(--accent-500)}
.article-body h3{font-size:20px;line-height:1.45;margin:1.7em 0 .6em;font-weight:700}
.article-body h4{font-size:17px;margin:1.5em 0 .5em;font-weight:600}
.article-body p{margin:0 0 1.2em}
.article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.3em}
.article-body li{margin-bottom:.5em;line-height:1.85}
.article-body li::marker{color:var(--brand-500)}
.article-body blockquote{
  margin:26px 0;padding:16px 22px;border-left:3px solid var(--accent-500);
  background:var(--surface-2);border-radius:0 12px 12px 0;color:var(--ink-700);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:26px 0}
.article-body a{color:var(--brand-500);border-bottom:1px solid rgba(28,107,95,.35)}
.article-body a:hover{color:var(--brand-700);border-bottom-color:var(--brand-700)}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;display:block;overflow-x:auto;white-space:nowrap}
.article-body table th{background:var(--brand-900);color:#fff;font-weight:600;text-align:left;padding:12px 16px}
.article-body table td{padding:12px 16px;border-bottom:1px solid var(--line)}
.article-body table tr:nth-child(even) td{background:var(--surface-2)}
.article-body pre{background:var(--surface-2);border:1px solid var(--line);border-radius:12px;padding:16px 18px;overflow-x:auto;font-size:14px;line-height:1.7;margin:24px 0}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;background:var(--surface-2);padding:2px 6px;border-radius:6px}
.article-body pre code{background:none;padding:0}
.body-note{margin-top:32px;padding-top:24px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-500);line-height:1.7}
.empty-state{text-align:center;padding:64px 24px}
.empty-state i{font-size:34px;color:var(--brand-200);margin-bottom:16px;display:block}
.empty-state h3{font-size:20px;margin-bottom:10px}
.empty-state p{color:var(--ink-500);margin-bottom:22px}

/* ---------- 目录 ---------- */
.toc{position:sticky;top:112px;border-left:2px solid var(--line);padding-left:18px}
.toc-title{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--ink-500);margin-bottom:12px}
.toc ul{list-style:none;margin:0;padding:0}
.toc li{margin-bottom:8px}
.toc a{display:block;font-size:14px;line-height:1.5;color:var(--ink-500);padding:4px 0;border-left:2px solid transparent;margin-left:-20px;padding-left:18px;transition:all 200ms var(--ease)}
.toc a:hover{color:var(--brand-700)}
.toc a.is-current{color:var(--brand-700);font-weight:600;border-left-color:var(--accent-500)}

/* ---------- 文末 / 标签 ---------- */
.article-foot{display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:center;margin-top:36px;padding-top:26px;border-top:1px solid var(--line)}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;background:var(--brand-200);color:var(--brand-700);font-size:12px;font-weight:600}
.tag-soft{background:var(--surface-2);color:var(--ink-500)}

/* ---------- 相关推荐 ---------- */
.related{background:var(--surface-2)}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);transition:transform 200ms var(--ease),box-shadow 200ms var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.card-media{overflow:hidden;aspect-ratio:16/10;background:var(--surface-2)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 300ms var(--ease)}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.card-body h3{font-size:17px;line-height:1.5;margin:12px 0 8px;font-weight:700}
.card:hover .card-body h3{color:var(--brand-500)}
.card-body p{font-size:14px;color:var(--ink-500);line-height:1.7;margin:0 0 16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-500)}
.card-foot i{color:var(--brand-500);transition:transform 200ms var(--ease)}
.card:hover .card-foot i{transform:translateX(4px)}

/* ---------- CTA 带 ---------- */
.cta-band{background:var(--brand-900);color:rgba(255,255,255,.78);border-radius:24px;padding:48px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,32px);line-height:1.3;max-width:22ch}
.cta-band p{margin:10px 0 0;color:rgba(255,255,255,.72);font-size:15px;max-width:48ch}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 表单 ---------- */
.form-wrap{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:36px;box-shadow:var(--shadow-1);max-width:820px;margin:0 auto}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.field{display:flex;flex-direction:column;gap:8px}
.field-full{grid-column:1/-1}
.field label{font-size:14px;font-weight:600;color:var(--ink-900)}
.field input,.field select,.field textarea{
  height:44px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-input);background:var(--paper);
  color:var(--ink-900);transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);width:100%;
}
.field textarea{height:auto;min-height:96px;padding:12px 14px;line-height:1.7;resize:vertical}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink-500) 50%),linear-gradient(135deg,var(--ink-500) 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 15px) 20px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 2px rgba(28,107,95,.16)}
.check{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--ink-700);line-height:1.6}
.check input{width:18px;height:18px;margin-top:3px;flex:0 0 auto;accent-color:var(--brand-500)}
.form-note{font-size:13px;color:var(--ink-500);line-height:1.7;margin-top:16px}
.form-msg{margin-top:14px;font-size:14px;color:var(--ok);font-weight:600;display:none}
.form-msg.is-visible{display:block}
.float-btn{
  position:fixed;right:24px;bottom:24px;z-index:70;opacity:0;visibility:hidden;
  transition:opacity 300ms var(--ease),visibility 300ms var(--ease),transform 200ms var(--ease);
}
.float-btn.is-visible{opacity:1;visibility:visible}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.72);padding:72px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:40px}
.footer-brand .brand-text{display:inline-block;font-size:18px;font-weight:800;color:#fff;margin-bottom:14px}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.68);max-width:34ch}
.footer-contact{margin-top:16px;font-size:13px;line-height:1.9;color:rgba(255,255,255,.6)}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.04em}
.footer-links{list-style:none;margin:0;padding:0}
.footer-links li{margin-bottom:4px}
.footer-links a{display:inline-flex;align-items:center;min-height:44px;font-size:14px;color:rgba(255,255,255,.72)}
.footer-links a:hover{color:#fff}
.footer-text{font-size:13px;line-height:1.8;color:rgba(255,255,255,.6);margin:0}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- 动效 ---------- */
.reveal-up{opacity:0;transform:translateY(16px);transition:opacity 600ms var(--ease),transform 600ms var(--ease)}
.reveal-up.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal-up{opacity:1;transform:none}
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .container{padding:0 20px}
  .section{padding:72px 0}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0}
  .toc{display:none}
  .article-card{padding:32px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{padding:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .nav-links{
    position:fixed;top:86px;left:16px;right:16px;flex-direction:column;align-items:stretch;justify-content:flex-start;
    background:rgba(255,255,255,.97);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow-2);
    padding:12px;gap:2px;display:none;max-height:calc(100vh - 120px);overflow:auto;
  }
  .nav-links.is-open{display:flex}
  .nav-link{min-height:48px;border-radius:14px;border-left:3px solid transparent;padding-left:16px}
  .nav-link.is-active{border-left-color:var(--accent-500)}
  .nav-toggle{display:flex;margin-left:auto}
  .nav-actions{display:none}
}
@media (max-width:767px){
  .article-head{padding:106px 0 48px}
  .article-main{padding:52px 0 72px}
  .article-card{padding:24px;border-radius:18px}
  .article-body{font-size:16px;line-height:1.85}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .cta-band{padding:28px;border-radius:20px}
  .form-wrap{padding:24px}
  .form-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .float-btn{right:16px;bottom:16px}
}
@media (max-width:519px){
  .container{padding:0 16px}
  .site-header{padding:0 12px;top:12px}
  .nav-shell{padding:8px 14px;gap:8px}
  .brand{font-size:15px}
  .article-head h1{font-size:26px}
  .btn{padding:12px 20px;font-size:14px}
}

/* roulang page: category1 */
:root{
  --brand-900:#0B2E2A;
  --brand-700:#11453E;
  --brand-500:#1C6B5F;
  --brand-200:#A9CCC3;
  --accent-500:#E0763C;
  --accent-600:#C25E29;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --surface-2:#EFEBE3;
  --ink-900:#101413;
  --ink-700:#2E3A38;
  --ink-500:#5C6B68;
  --line:#E2DED5;
  --ok:#2F7D5B;
  --shadow-1:0 1px 2px rgba(16,20,19,.04),0 8px 24px rgba(16,20,19,.06);
  --shadow-2:0 12px 32px rgba(11,46,42,.14);
  --radius-card:16px;
  --radius-img:12px;
  --radius-input:10px;
  --radius-pill:999px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --t:200ms var(--ease);
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.78;
  color:var(--ink-700);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
img{max-width:100%;display:block;border-style:none}
a{color:var(--brand-500);text-decoration:none;transition:color var(--t),background-color var(--t),border-color var(--t),transform var(--t)}
a:hover{color:var(--brand-700)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px}
button{font-family:inherit;cursor:pointer}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-alt{background:var(--surface-2)}
.section-dark{background:var(--brand-900);color:rgba(255,255,255,.82)}
.section-dark h2,.section-dark h3{color:#fff}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;padding:16px 20px 0;pointer-events:none}
.nav-shell{
  pointer-events:auto;
  max-width:1080px;
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:18px;
  padding:10px 22px;
  border-radius:var(--radius-pill);
  background:rgba(255,255,255,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--line);
  box-shadow:0 1px 2px rgba(16,20,19,.03);
  transition:background-color var(--t),box-shadow var(--t),padding var(--t);
}
.site-header.is-scrolled .nav-shell{background:rgba(255,255,255,.94);box-shadow:var(--shadow-1);padding:6px 22px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:26px;height:26px;border-radius:8px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand-500),var(--brand-900) 70%);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.28);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;left:50%;top:50%;width:9px;height:9px;border-radius:50%;
  transform:translate(-50%,-50%);background:var(--accent-500);
}
.brand-text{font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--ink-900)}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  display:inline-flex;align-items:center;
  min-height:40px;padding:0 16px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;color:var(--ink-700);
  transition:background-color var(--t),color var(--t);
}
.nav-link:hover{background:var(--surface-2);color:var(--brand-700)}
.nav-link.is-active{background:var(--brand-200);color:var(--brand-700)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;width:46px;height:46px;border-radius:14px;border:1px solid var(--line);
  background:rgba(255,255,255,.9);padding:0;flex-direction:column;justify-content:center;align-items:center;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink-900);transition:transform var(--t),opacity var(--t)}
.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)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 26px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:700;letter-spacing:.01em;border:1px solid transparent;
  transition:background-color var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
  white-space:nowrap;
}
.btn-primary{background:var(--accent-500);color:#fff}
.btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{border-color:var(--brand-700);color:var(--brand-700);background:transparent}
.btn-outline:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--brand-900)}
.btn-light:hover{background:var(--surface-2);color:var(--brand-900);transform:translateY(-2px)}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:15px;color:var(--brand-500)}
.link-arrow::after{content:"→";transition:transform var(--t)}
.link-arrow:hover::after{transform:translateX(4px)}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  margin-top:-78px;
  padding:170px 0 84px;
  background-image:linear-gradient(180deg,rgba(11,46,42,.94) 0%,rgba(11,46,42,.86) 55%,rgba(11,46,42,.78) 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  color:rgba(255,255,255,.82);
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(760px 320px at 88% 12%,rgba(224,118,60,.22),transparent 70%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.66);margin-bottom:22px}
.crumbs a{color:rgba(255,255,255,.82)}
.crumbs a:hover{color:#fff}
.crumbs span.sep{opacity:.5}
.page-hero h1{
  font-size:clamp(30px,4.2vw,52px);
  font-weight:800;
  line-height:1.18;
  letter-spacing:-.02em;
  color:#fff;
  max-width:16em;
}
.hero-lead{margin-top:18px;font-size:17px;line-height:1.8;color:rgba(255,255,255,.8);max-width:38em}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.18);
  font-size:13px;color:rgba(255,255,255,.86);
}
.hero-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-500)}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}

/* ---------- 布局 ---------- */
.layout-76{display:grid;grid-template-columns:minmax(0,1fr) 252px;gap:56px;align-items:start}
.content-col{min-width:0}
.section-head{max-width:44em;margin-bottom:44px}
.section-head h2{font-size:clamp(24px,2.6vw,36px);font-weight:700;line-height:1.28;letter-spacing:-.015em;color:var(--ink-900)}
.section-head p{margin-top:14px;color:var(--ink-500);font-size:15px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--accent-600);
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--accent-500)}

/* ---------- 锚点栏 ---------- */
.anchor-col{position:sticky;top:108px}
.anchor-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 20px;box-shadow:var(--shadow-1);
}
.anchor-card h4{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--ink-500);margin-bottom:14px}
.anchor-list{display:flex;flex-direction:column;gap:2px}
.anchor-list a{
  display:block;padding:10px 12px;border-radius:10px;
  font-size:14px;font-weight:600;color:var(--ink-700);
  border-left:3px solid transparent;
}
.anchor-list a:hover{background:var(--surface-2);color:var(--brand-700);border-left-color:var(--brand-200)}
.anchor-list a.is-current{background:var(--surface-2);color:var(--brand-700);border-left-color:var(--accent-500)}
.anchor-note{margin-top:16px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;line-height:1.7;color:var(--ink-500)}
.anchor-bar{display:none}

/* ---------- 图文交替 ---------- */
.alt-row{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  padding:44px 0;border-top:1px solid var(--line);
}
.alt-row:first-of-type{border-top:0;padding-top:0}
.alt-row.reverse .alt-text{order:2}
.alt-row.reverse .alt-figure{order:1}
.step-no{
  display:inline-block;font-size:38px;font-weight:800;line-height:1;
  letter-spacing:-.03em;color:var(--accent-500);margin-bottom:14px;
}
.alt-text h3{font-size:22px;font-weight:700;line-height:1.4;color:var(--ink-900);margin-bottom:14px}
.alt-text p{font-size:16px;line-height:1.85;color:var(--ink-700);max-width:42em}
.point-list{margin-top:20px;display:flex;flex-direction:column;gap:12px}
.point-list li{position:relative;padding-left:20px;font-size:15px;line-height:1.75;color:var(--ink-700)}
.point-list li::before{
  content:"";position:absolute;left:2px;top:.62em;width:6px;height:6px;
  background:var(--brand-500);border-radius:1px;
}
.alt-figure{
  position:relative;border-radius:var(--radius-img);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-1);background:var(--surface-2);
}
.alt-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 400ms var(--ease)}
.alt-figure:hover img{transform:scale(1.04)}
.alt-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:12px 16px;font-size:12px;color:#fff;
  background:linear-gradient(180deg,rgba(11,46,42,0),rgba(11,46,42,.82));
}

/* ---------- 深色核对区 ---------- */
.check-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:8px}
.check-card{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius-card);
  padding:26px 24px;
  transition:transform var(--t),background-color var(--t),border-color var(--t);
}
.check-card:hover{transform:translateY(-4px);background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.24)}
.check-card h3{font-size:18px;font-weight:700;margin-bottom:10px}
.check-card p{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.72)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:700;letter-spacing:.02em;
}
.badge-ok{background:rgba(47,125,91,.18);color:#8FD3B6}
.badge-warn{background:rgba(224,118,60,.18);color:#F0A579}
.badge-info{background:rgba(169,204,195,.16);color:var(--brand-200)}
.check-card .badge{margin-bottom:14px}
.dark-lead{max-width:42em;color:rgba(255,255,255,.7);font-size:15px;margin-top:14px}

/* ---------- 互链 ---------- */
.cross-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.cross-card{
  display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:30px 28px;box-shadow:var(--shadow-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.cross-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--brand-200);color:var(--brand-700)}
.cross-card .tag{
  display:inline-flex;padding:5px 13px;border-radius:var(--radius-pill);
  background:var(--brand-200);color:var(--brand-700);font-size:12px;font-weight:700;margin-bottom:16px;
}
.cross-card h3{font-size:20px;font-weight:700;color:var(--ink-900);margin-bottom:12px}
.cross-card p{font-size:14.5px;color:var(--ink-500);line-height:1.8}
.cross-card .link-arrow{margin-top:20px}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  background:none;border:0;text-align:left;
  min-height:64px;padding:18px 4px 18px 0;
  font-size:17px;font-weight:600;color:var(--ink-900);
  position:relative;
}
.faq-q:hover{color:var(--brand-500)}
.faq-q::before{
  content:"";position:absolute;left:-16px;top:16px;bottom:16px;width:3px;border-radius:3px;
  background:transparent;transition:background-color var(--t);
}
.faq-item.is-open .faq-q::before{background:var(--accent-500)}
.faq-icon{position:relative;width:20px;height:20px;flex:0 0 auto}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand-500);
  transform:translate(-50%,-50%);transition:transform var(--t),opacity var(--t);
}
.faq-icon::before{width:16px;height:2px;border-radius:2px}
.faq-icon::after{width:2px;height:16px;border-radius:2px}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height 320ms var(--ease)}
.faq-a p{padding:0 40px 22px 0;font-size:15px;line-height:1.85;color:var(--ink-500)}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand-900);
  border-radius:24px;
  padding:56px 52px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(224,118,60,.28),transparent 68%);
}
.cta-band h2{font-size:clamp(22px,2.3vw,30px);font-weight:700;color:#fff;line-height:1.35;position:relative;z-index:1}
.cta-band p{margin-top:12px;color:rgba(255,255,255,.72);font-size:15px;max-width:34em;position:relative;z-index:1}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:1}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.72);padding:72px 0 32px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand-text{color:#fff;font-size:18px}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;max-width:32em}
.footer-contact{margin-top:18px;font-size:13px;line-height:1.9;color:rgba(255,255,255,.6)}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:2px}
.footer-links a{display:inline-flex;align-items:center;min-height:44px;font-size:14px;color:rgba(255,255,255,.72)}
.footer-links a:hover{color:#fff}
.footer-text{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.62)}
.footer-bottom{
  margin-top:48px;padding-top:24px;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);
}

/* ---------- 动效 ---------- */
.reveal-up{opacity:0;transform:translateY(16px)}
.reveal-up.is-in{opacity:1;transform:none;transition:opacity 600ms var(--ease),transform 600ms var(--ease)}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .layout-76{grid-template-columns:minmax(0,1fr) 224px;gap:40px}
}
@media (max-width:1024px){
  .section{padding:72px 0}
  .nav-links{
    position:fixed;left:16px;right:16px;top:86px;
    display:none;flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;border:1px solid var(--line);border-radius:20px;
    padding:14px;box-shadow:var(--shadow-2);max-height:calc(100vh - 120px);overflow:auto;
  }
  .nav-links.is-open{display:flex}
  .nav-link{min-height:50px;padding:0 16px;border-left:3px solid transparent;border-radius:12px;font-size:16px}
  .nav-link.is-active{border-left-color:var(--accent-500);background:var(--surface-2)}
  .nav-toggle{display:flex}
  .nav-actions .btn{display:none}
  .layout-76{grid-template-columns:minmax(0,1fr);gap:0}
  .anchor-col{display:none}
  .anchor-bar{
    display:flex;gap:10px;overflow-x:auto;padding:14px 20px;margin:0 -24px 32px;
    background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
    scrollbar-width:none;
  }
  .anchor-bar::-webkit-scrollbar{display:none}
  .anchor-bar a{
    flex:0 0 auto;padding:9px 16px;border-radius:var(--radius-pill);
    background:var(--surface-2);font-size:14px;font-weight:600;color:var(--ink-700);
  }
  .anchor-bar a:hover{background:var(--brand-200);color:var(--brand-700)}
  .alt-row{gap:32px}
  .check-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:44px 36px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:60px 0}
  .page-hero{padding:150px 0 64px}
  .alt-row{grid-template-columns:1fr;gap:24px;padding:36px 0}
  .alt-row.reverse .alt-text{order:1}
  .alt-row.reverse .alt-figure{order:2}
  .cross-grid{grid-template-columns:1fr}
  .check-grid{grid-template-columns:1fr}
  .cta-band{padding:36px 26px;border-radius:20px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .nav-shell{padding:8px 16px;gap:12px}
  .brand-text{font-size:15px}
  .hero-lead{font-size:16px}
  .btn{min-height:48px;padding:0 20px;width:100%;}
  .hero-cta{flex-direction:column;align-items:stretch}
  .cta-actions{width:100%}
  .step-no{font-size:32px}
  .alt-text h3{font-size:20px}
  .faq-q{font-size:16px}
  .footer-grid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal-up{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --brand-900:#0B2E2A;
  --brand-700:#11453E;
  --brand-500:#1C6B5F;
  --brand-200:#A9CCC3;
  --accent-500:#E0763C;
  --accent-600:#C25E29;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --surface-2:#EFEBE3;
  --ink-900:#101413;
  --ink-700:#2E3A38;
  --ink-500:#5C6B68;
  --line:#E2DED5;
  --ok:#2F7D5B;
  --radius-card:16px;
  --radius-img:12px;
  --radius-input:10px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(16,20,19,.04), 0 8px 24px rgba(16,20,19,.06);
  --shadow-2:0 12px 32px rgba(11,46,42,.14);
  --ease:cubic-bezier(.22,.61,.36,1);
  --t:200ms cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-700);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--brand-500);text-decoration:none;transition:color var(--t),background-color var(--t),border-color var(--t)}
a:hover{color:var(--accent-600)}
h1,h2,h3,h4,h5{margin:0 0 .6em;color:var(--ink-900);font-weight:700;line-height:1.32}
h1{font-weight:800}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.2em}
li{margin-bottom:.4em}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-alt{background:var(--surface-2)}
.section-head{max-width:720px;margin-bottom:40px}
.section-title{font-size:clamp(24px,2.6vw,36px);font-weight:700;line-height:1.28;letter-spacing:-.01em;margin:14px 0 12px;color:var(--ink-900)}
.section-sub{color:var(--ink-500);font-size:16px;margin:0;line-height:1.8}

/* ===== 悬浮胶囊导航 ===== */
.site-header{position:fixed;top:0;left:0;right:0;z-index:80;padding:16px 24px;pointer-events:none;transition:padding var(--t)}
.nav-shell{
  position:relative;
  pointer-events:auto;
  max-width:1080px;
  margin:0 auto;
  padding:10px 22px;
  display:flex;
  align-items:center;
  gap:18px;
  background:rgba(255,255,255,.78);
  border:1px solid var(--line);
  border-radius:999px;
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  box-shadow:0 1px 2px rgba(16,20,19,.03);
  transition:background var(--t),box-shadow var(--t),padding var(--t);
}
.site-header.is-scrolled .nav-shell{background:rgba(255,255,255,.94);box-shadow:var(--shadow-1);padding:8px 22px}
.brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:var(--brand-900);letter-spacing:-.01em;white-space:nowrap;flex:0 0 auto}
.brand:hover{color:var(--brand-900)}
.brand-mark{width:12px;height:12px;border-radius:4px;background:linear-gradient(135deg,var(--brand-500),var(--accent-500));box-shadow:0 0 0 4px rgba(28,107,95,.14);flex:0 0 auto}
.brand-text{font-size:17px;font-weight:800;color:var(--brand-900);letter-spacing:-.01em}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{padding:9px 15px;border-radius:999px;font-size:15px;font-weight:500;color:var(--ink-700);white-space:nowrap;transition:background-color var(--t),color var(--t)}
.nav-link:hover{background:var(--surface-2);color:var(--brand-700)}
.nav-link.is-active{background:var(--brand-200);color:var(--brand-900);font-weight:700}
.nav-actions{flex:0 0 auto;margin-left:6px}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  margin-left:auto;
  border:1px solid var(--line);
  border-radius:14px;
  background:#fff;
  padding:0;
  cursor:pointer;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  transition:box-shadow var(--t),border-color var(--t);
}
.nav-toggle:hover{box-shadow:var(--shadow-1);border-color:var(--brand-200)}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-900);transition:transform var(--t),opacity var(--t)}
.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)}

/* ===== 按钮 / 标签 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 24px;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;
  cursor:pointer;text-align:center;
  transition:background-color var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 8px 20px rgba(224,118,60,.24)}
.btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(194,94,41,.28)}
.btn-secondary{background:transparent;color:var(--brand-700);border-color:var(--brand-700)}
.btn-secondary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px)}
.btn-ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.42)}
.btn-ghost-light:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-2px)}
.btn-sm{min-height:38px;padding:9px 18px;font-size:14px}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin:26px 0 0}
.chip{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:var(--radius-pill);background:var(--surface-2);border:1px solid var(--line);color:var(--brand-700);font-size:13px;font-weight:600;line-height:1.4;white-space:nowrap}
.chip-accent{background:rgba(224,118,60,.12);border-color:rgba(224,118,60,.28);color:var(--accent-600)}
.chip-ok{background:rgba(47,125,91,.12);border-color:rgba(47,125,91,.28);color:var(--ok)}

/* ===== 页头 Hero ===== */
.page-hero{position:relative;padding:146px 0 84px;overflow:hidden;background:linear-gradient(180deg,#FFFFFF 0%,var(--paper) 100%)}
.page-hero::after{content:"";position:absolute;top:-140px;right:-120px;width:620px;height:620px;border-radius:50%;background:radial-gradient(circle,rgba(169,204,195,.42),rgba(169,204,195,0) 68%);pointer-events:none;z-index:0}
.page-hero .container{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:56px;align-items:center}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);margin-bottom:20px}
.breadcrumb a{color:var(--ink-500)}
.breadcrumb a:hover{color:var(--brand-500)}
.breadcrumb .sep{opacity:.45}
.hero-title{font-size:clamp(30px,4vw,48px);font-weight:800;line-height:1.18;letter-spacing:-.02em;margin:18px 0 16px;color:var(--ink-900)}
.hero-sub{font-size:17px;line-height:1.82;color:var(--ink-700);max-width:46ch;margin:0}
.hero-points{list-style:none;padding:0;margin:22px 0 0;display:grid;gap:10px}
.hero-points li{position:relative;padding-left:18px;font-size:15px;color:var(--ink-700);margin:0}
.hero-points li::before{content:"";position:absolute;left:0;top:.68em;width:8px;height:8px;border-radius:50%;background:var(--accent-500)}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px}
.hero-visual{position:relative}
.hero-media{border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1);background:var(--surface)}
.hero-media img{width:100%;aspect-ratio:16/11;object-fit:cover;transition:transform 400ms var(--ease)}
.hero-media:hover img{transform:scale(1.04)}
.hero-float{
  position:absolute;left:-26px;bottom:-26px;
  max-width:250px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:16px 18px;
  box-shadow:var(--shadow-2);
}
.hero-float p{margin:10px 0 4px;font-size:15px;font-weight:700;color:var(--ink-900);line-height:1.5}
.hero-float-note{display:block;font-size:13px;color:var(--ink-500);line-height:1.6}

/* ===== 数据带 ===== */
.metrics-band{
  position:relative;
  background:var(--brand-900);
  border-radius:24px;
  padding:52px 44px;
  overflow:hidden;
  box-shadow:var(--shadow-2);
}
.metrics-band::after{content:"";position:absolute;right:-8%;bottom:-70%;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(224,118,60,.26),rgba(224,118,60,0) 66%);pointer-events:none}
.metric-grid{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:30px}
.metric-num{font-size:clamp(40px,4.6vw,60px);font-weight:800;line-height:1;letter-spacing:-.03em;color:#fff}
.metric-unit{font-size:16px;font-weight:700;color:var(--accent-500);margin-left:6px;letter-spacing:0}
.metric-label{margin-top:12px;font-size:14px;font-weight:700;color:rgba(255,255,255,.94)}
.metric-note{margin-top:6px;font-size:13px;line-height:1.65;color:rgba(255,255,255,.6)}

/* ===== 时间线 ===== */
.timeline{list-style:none;margin:0;padding:0 0 0 34px;position:relative}
.timeline::before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;background:var(--brand-200);border-radius:2px}
.tl-item{position:relative;padding-bottom:34px;margin:0}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-34px;top:6px;
  width:16px;height:16px;border-radius:50%;
  background:var(--surface);border:3px solid var(--accent-500);
  box-shadow:0 0 0 4px rgba(224,118,60,.14);
}
.tl-step{font-size:12px;font-weight:800;letter-spacing:.14em;color:var(--accent-600);margin-bottom:6px}
.tl-title{font-size:20px;font-weight:700;margin:0 0 8px;color:var(--ink-900)}
.tl-text{margin:0;font-size:15px;line-height:1.8;color:var(--ink-500);max-width:52ch}

/* ===== 卡片网格 ===== */
.panel-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.panel-card{
  display:flex;flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:30px;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.panel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--brand-200)}
.panel-card h3{font-size:20px;font-weight:700;margin:0 0 10px;color:var(--ink-900)}
.panel-card p{margin:0;font-size:15px;line-height:1.8;color:var(--ink-500)}
.panel-media{border-radius:var(--radius-img);overflow:hidden;margin:0 0 22px;border:1px solid var(--line)}
.panel-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 400ms var(--ease)}
.panel-card:hover .panel-media img{transform:scale(1.04)}
.check-list{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:10px}
.check-list li{position:relative;padding-left:20px;font-size:15px;line-height:1.72;color:var(--ink-700);margin:0}
.check-list li::before{content:"";position:absolute;left:0;top:.6em;width:6px;height:6px;border-radius:1px;background:var(--brand-500)}
.panel-wide{
  grid-column:span 2;
  display:grid;
  grid-template-columns:1.2fr .95fr;
  padding:0;
  overflow:hidden;
}
.panel-wide-body{padding:38px 40px}
.panel-wide-media{position:relative;min-height:300px;background:var(--surface-2)}
.panel-wide-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}

/* ===== 长条提示 ===== */
.pain-list{display:grid;gap:16px}
.pain-item{
  display:grid;grid-template-columns:auto 1fr;gap:26px;align-items:start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 30px;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.pain-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--brand-200)}
.pain-num{font-size:34px;font-weight:800;line-height:1;letter-spacing:-.03em;color:var(--accent-500)}
.pain-item h3{font-size:19px;font-weight:700;margin:0 0 8px;color:var(--ink-900)}
.pain-item p{margin:0;font-size:15px;line-height:1.78;color:var(--ink-500)}

/* ===== FAQ ===== */
.faq-list{list-style:none;margin:0;padding:0;background:transparent;border:0;max-width:900px}
.faq-list .accordion-item{background:transparent;border:0;margin:0}
.faq-list .accordion-title{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:56px;
  padding:20px 6px 20px 20px;
  font-size:17px;font-weight:600;line-height:1.5;color:var(--ink-900);
  background:transparent;border:0;border-top:1px solid var(--line);
  transition:color var(--t);
}
.faq-list .accordion-item:first-child .accordion-title{border-top:0}
.faq-list .accordion-title:hover{background:transparent;color:var(--brand-500)}
.faq-list .accordion-title::before{
  content:"" !important;
  display:block !important;
  position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:2px;
  background:transparent;
  transition:background-color var(--t);
  border:0;
  transform:none;
  height:auto;
  width:3px;
}
.faq-list .accordion-item.is-active .accordion-title::before{background:var(--accent-500)}
.faq-list .accordion-title::after{
  content:"";flex:0 0 auto;width:14px;height:14px;
  background-image:linear-gradient(var(--accent-500),var(--accent-500)),linear-gradient(var(--accent-500),var(--accent-500));
  background-position:center center,center center;
  background-size:14px 2px,2px 14px;
  background-repeat:no-repeat;
  transition:background-size var(--t);
}
.faq-list .accordion-item.is-active .accordion-title::after{background-size:14px 2px,0 0}
.faq-list .accordion-content{
  padding:0 6px 26px 20px;
  background:transparent;border:0;
  font-size:15px;line-height:1.85;color:var(--ink-700);
}
.faq-list .accordion-content p{margin:0 0 .8em}
.faq-list .accordion-content p:last-child{margin-bottom:0}

/* ===== CTA 带 ===== */
.cta-band{
  display:grid;grid-template-columns:1.45fr auto;gap:36px;align-items:center;
  background:var(--brand-900);
  border-radius:24px;
  padding:52px 48px;
  color:rgba(255,255,255,.8);
  position:relative;
  overflow:hidden;
  box-shadow:var(--shadow-2);
}
.cta-band::after{content:"";position:absolute;left:-10%;top:-80%;width:480px;height:480px;border-radius:50%;background:radial-gradient(circle,rgba(224,118,60,.24),rgba(224,118,60,0) 68%);pointer-events:none}
.cta-band > *{position:relative}
.cta-title{color:#fff;font-size:clamp(22px,2.4vw,32px);font-weight:700;line-height:1.32;margin:0 0 12px}
.cta-text{margin:0;font-size:15px;line-height:1.8;color:rgba(255,255,255,.72);max-width:52ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.rel-links{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:28px;padding-top:24px;border-top:1px solid var(--line)}
.rel-links a{font-size:15px;font-weight:600;color:var(--brand-500);display:inline-flex;align-items:center;gap:6px;padding:6px 0}
.rel-links a::after{content:"→";transition:transform var(--t)}
.rel-links a:hover::after{transform:translateX(4px)}

/* ===== 页脚 ===== */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.72);padding:76px 0 32px;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.25fr;gap:40px}
.footer-brand .brand-text{display:block;color:#fff;font-size:19px;font-weight:800;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.68);margin:0 0 16px;max-width:38ch}
.footer-contact{font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.6)}
.footer-title{color:#fff;font-size:15px;font-weight:700;margin:0 0 16px}
.footer-links{list-style:none;padding:0;margin:0;display:grid;gap:4px}
.footer-links li{margin:0}
.footer-links a{display:inline-block;padding:8px 0;min-height:44px;font-size:14px;color:rgba(255,255,255,.72);transition:color var(--t),transform var(--t)}
.footer-links a:hover{color:#fff;transform:translateX(3px)}
.footer-text{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.62);margin:0;max-width:34ch}
.footer-bottom{
  margin-top:52px;padding-top:24px;
  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,.58);line-height:1.7;
}

/* ===== 动效 ===== */
.js .reveal{opacity:0;transform:translateY(16px)}
.js .reveal.is-visible{opacity:1;transform:none;transition:opacity 620ms var(--ease),transform 620ms var(--ease)}

/* ===== 响应式 ===== */
@media (max-width:1200px){
  .hero-grid{gap:40px}
}
@media (max-width:1024px){
  .section{padding:72px 0}
  .container{padding:0 20px}
  .page-hero{padding:126px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-visual{max-width:640px}
  .hero-float{left:auto;right:16px;bottom:-20px}
  .metrics-band{padding:44px 34px}
  .metric-grid{grid-template-columns:repeat(2,1fr);gap:34px 26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .cta-band{grid-template-columns:1fr;gap:26px;padding:44px 36px}
  .panel-wide{grid-template-columns:1fr}
  .panel-wide-media{min-height:220px;order:-1}
  .panel-wide-body{padding:32px}
}
@media (max-width:900px){
  .nav-links{
    display:none;
    position:absolute;
    left:0;right:0;top:calc(100% + 10px);
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:12px;
    background:rgba(255,255,255,.98);
    border:1px solid var(--line);
    border-radius:20px;
    box-shadow:var(--shadow-2);
    margin-left:0;
  }
  .nav-links.is-open{display:flex}
  .nav-link{display:flex;align-items:center;min-height:48px;padding:12px 16px;border-radius:14px;font-size:15.5px}
  .nav-link.is-active{box-shadow:inset 3px 0 0 var(--accent-500)}
  .nav-actions{display:none}
  .nav-toggle{display:flex}
}
@media (max-width:640px){
  .section{padding:52px 0}
  .container{padding:0 16px}
  .site-header{padding:12px 16px}
  .nav-shell{padding:8px 14px;gap:10px}
  .brand-text{font-size:16px}
  .page-hero{padding:112px 0 52px}
  .hero-title{font-size:clamp(28px,8.4vw,38px)}
  .hero-sub{font-size:16px}
  .hero-float{position:static;max-width:none;margin-top:16px;left:auto;right:auto;bottom:auto}
  .btn{width:100%}
  .btn-row{flex-direction:column}
  .cta-actions{flex-direction:column}
  .metrics-band{padding:34px 24px;border-radius:20px}
  .metric-grid{grid-template-columns:1fr 1fr;gap:26px 18px}
  .metric-num{font-size:clamp(34px,10vw,44px)}
  .panel-grid{grid-template-columns:1fr}
  .panel-wide{grid-column:span 1}
  .panel-card{padding:24px}
  .panel-wide-body{padding:26px}
  .pain-item{grid-template-columns:1fr;gap:12px;padding:22px}
  .pain-num{font-size:28px}
  .timeline{padding-left:28px}
  .tl-item::before{left:-28px}
  .timeline::before{left:6px}
  .cta-band{padding:34px 24px;border-radius:20px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .site-footer{padding:56px 0 26px;margin-top:64px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none}
}