/* roulang page: index */
:root{
  --brand-900:#0B2A22;
  --brand-700:#123B30;
  --brand-500:#1F5C49;
  --brand-100:#DCE9E3;
  --accent:#EE6A2E;
  --accent-600:#D2551D;
  --accent-50:#FDEDE4;
  --paper:#F6F4EE;
  --card:#FFFFFF;
  --ink:#14201C;
  --ink-2:#2A3330;
  --muted:#6C7772;
  --line:#E4E1D8;
  --radius-card:16px;
  --radius-img:14px;
  --radius-btn:10px;
  --radius-badge:6px;
  --shadow-1:0 1px 0 rgba(11,42,34,.04);
  --shadow-2:0 14px 30px rgba(11,42,34,.10);
  --shadow-3:0 30px 80px rgba(11,42,34,.18);
  --container:1220px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::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","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--ink-2);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{margin:0;color:var(--brand-700);font-weight:700;line-height:1.3}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),border-color .22s var(--ease)}
button{font-family:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(238,106,46,.35);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:92px 0}
.section--tight{padding:72px 0}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ---------- 顶部信息条 ---------- */
.topbar{border-bottom:1px solid var(--line);font-size:13px;color:var(--muted);background:var(--paper)}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;min-height:38px;gap:16px}
.topbar__note{display:flex;align-items:center;gap:8px}
.topbar__note i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block}
.topbar__links{display:flex;gap:22px}
.topbar__links a{color:var(--muted)}
.topbar__links a:hover{color:var(--accent-600)}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(246,244,238,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:76px}
.brand{display:flex;align-items:baseline;gap:10px;flex-shrink:0}
.brand__mark{font-size:20px;font-weight:800;letter-spacing:.01em;color:var(--brand-900);line-height:1.2}
.brand__mark span{color:var(--accent-600)}
.brand__sub{font-size:12px;letter-spacing:.14em;color:var(--muted);white-space:nowrap}
.nav__menu{display:flex;align-items:center;gap:30px}
.nav__link{position:relative;display:inline-block;font-size:15px;font-weight:500;color:var(--ink-2);padding:8px 0}
.nav__link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--accent);transition:width .24s var(--ease)}
.nav__link:hover{color:var(--brand-900)}
.nav__link:hover::after{width:100%}
.nav__item.is-active .nav__link{color:var(--brand-900);font-weight:600}
.nav__item.is-active .nav__link::before{content:"";position:absolute;top:-7px;left:50%;transform:translateX(-50%);width:6px;height:6px;border-radius:50%;background:var(--accent)}
.nav__right{display:flex;align-items:center;gap:14px}
.nav__toggle{display:none;flex-direction:column;justify-content:center;gap:6px;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:transparent;cursor:pointer;padding:0 11px}
.nav__toggle span{display:block;height:1.5px;background:var(--brand-900);border-radius:2px;transition:transform .22s var(--ease),opacity .22s}
.nav__toggle.is-open span:first-child{transform:translateY(3.75px) rotate(45deg)}
.nav__toggle.is-open span:last-child{transform:translateY(-3.75px) rotate(-45deg)}
.nav__drawer{position:fixed;top:0;left:0;right:0;bottom:0;z-index:49;background:var(--paper);padding:104px 24px 32px;overflow-y:auto;opacity:0;visibility:hidden;transform:translateY(-10px);transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s}
.nav__drawer.is-open{opacity:1;visibility:visible;transform:none}
.nav__drawer a.drawer-link{display:block;font-size:20px;font-weight:600;color:var(--brand-900);padding:18px 0;border-bottom:1px solid var(--line)}
.nav__drawer a.drawer-link:hover{color:var(--accent-600)}
.nav__drawer-foot{margin-top:28px;display:flex;flex-direction:column;gap:16px}
.nav__drawer-foot .drawer-note{font-size:13px;color:var(--muted)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 26px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease),color .22s var(--ease);white-space:nowrap}
.btn--primary{background:var(--accent);color:#fff}
.btn--primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(11,42,34,.16)}
.btn--ghost{background:transparent;color:var(--brand-700);border-color:var(--brand-500)}
.btn--ghost:hover{background:var(--accent-50);border-color:var(--brand-500);transform:translateY(-2px)}
.btn--sm{min-height:40px;padding:0 18px;font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--accent-600)}
.link-arrow span{transition:transform .22s var(--ease)}
.link-arrow:hover{color:var(--accent-600);text-decoration:underline;text-underline-offset:4px}
.link-arrow:hover span{transform:translateX(4px)}

/* ---------- Hero ---------- */
.hero{padding:74px 0 92px}
.hero__grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.hero__label{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.08em;color:var(--muted)}
.hero__label::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent)}
.hero h1{margin-top:18px;font-size:clamp(32px,4.6vw,52px);line-height:1.22;letter-spacing:-.01em;color:var(--brand-900);max-width:15em}
.hero__sub{margin-top:20px;font-size:17px;line-height:1.85;color:var(--muted);max-width:34em}
.hero__actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px}
.hero__trust{margin-top:28px;display:flex;flex-wrap:wrap;gap:22px;font-size:13px;color:var(--muted)}
.hero__trust span{position:relative}
.hero__trust span+span::before{content:"";position:absolute;left:-11px;top:50%;transform:translateY(-50%);width:1px;height:12px;background:var(--line)}
.hero__media{position:relative;border-radius:18px;overflow:hidden;aspect-ratio:4/3;box-shadow:var(--shadow-2)}
.hero__media img{width:100%;height:100%;object-fit:cover}
.hero__media::after{content:"";position:absolute;inset:0;background:linear-gradient(200deg,rgba(11,42,34,.12),rgba(11,42,34,0) 62%)}
.hero__stat{position:absolute;right:20px;bottom:20px;z-index:2;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 20px;box-shadow:var(--shadow-1)}
.hero__stat b{display:block;font-size:26px;font-weight:800;color:var(--accent-600);line-height:1.2}
.hero__stat small{display:block;font-size:12px;color:var(--muted);letter-spacing:.04em}

/* ---------- 区块标题 ---------- */
.section-head{display:flex;align-items:center;gap:24px;margin-bottom:36px}
.section-head h2{font-size:clamp(24px,2.6vw,34px);flex-shrink:0}
.section-head__line{flex:1;height:1px;background:var(--line)}
.section-head__note{font-size:14px;color:var(--muted);max-width:34em;margin-top:14px}
.section-intro{max-width:52em;color:var(--muted);font-size:16px;margin-bottom:40px}

/* ---------- 痛点问答行 ---------- */
.qa-list{border-top:1px solid var(--line)}
.qa-row{display:grid;grid-template-columns:40px 1fr;gap:22px;align-items:start;padding:26px 18px;border-bottom:1px solid var(--line);transition:background-color .22s var(--ease)}
.qa-row:hover{background:#FBF9F4}
.qa-row__no{width:40px;height:40px;border:1px solid var(--line);border-radius:10px;background:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;color:var(--accent);transition:border-color .22s var(--ease)}
.qa-row:hover .qa-row__no{border-color:var(--accent)}
.qa-row h3{font-size:18px;font-weight:600;color:var(--brand-900);margin-bottom:6px}
.qa-row p{font-size:15px;color:var(--muted);max-width:62em}

/* ---------- 方案卡片（错位双列） ---------- */
.offset-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:28px}
.solution{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-1);display:flex;flex-direction:column;transition:transform .22s var(--ease),box-shadow .22s var(--ease)}
.solution:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.solution:hover h3{color:var(--accent-600)}
.solution:nth-child(1){grid-column:1/6}
.solution:nth-child(2){grid-column:6/13}
.solution:nth-child(3){grid-column:1/8}
.solution:nth-child(4){grid-column:8/13}
.solution__dot{width:8px;height:8px;border-radius:50%;background:var(--accent);margin-bottom:20px}
.solution h3{font-size:22px;font-weight:600;color:var(--brand-900);margin-bottom:12px;transition:color .22s var(--ease)}
.solution p{font-size:15px;color:var(--muted);margin-bottom:22px}
.solution .link-arrow{margin-top:auto}

/* ---------- 数据区 ---------- */
.stats{background:var(--brand-900);color:#fff;padding:88px 0;background-image:radial-gradient(rgba(255,255,255,.055) 1px,transparent 1px);background-size:22px 22px}
.stats h2{color:#fff;font-size:clamp(24px,2.6vw,34px);margin-bottom:14px}
.stats__sub{color:rgba(220,233,227,.72);font-size:16px;max-width:46em;margin-bottom:48px}
.stats__grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stats__item{padding:0 32px;border-left:1px solid rgba(255,255,255,.14)}
.stats__item:first-child{border-left:0;padding-left:0}
.stats__num{font-size:clamp(40px,5vw,64px);font-weight:800;line-height:1.05;color:#fff;font-variant-numeric:tabular-nums}
.stats__num em{font-size:.42em;font-style:normal;font-weight:600;color:var(--accent);margin-left:6px;letter-spacing:.04em}
.stats__label{margin-top:14px;font-size:13px;letter-spacing:.06em;color:rgba(220,233,227,.72)}

/* ---------- 内容卡片 ---------- */
.grid-x-gutter{margin-left:-14px;margin-right:-14px}
.grid-x-gutter>.cell{padding-left:14px;padding-right:14px;margin-bottom:28px}
.news-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;display:flex;flex-direction:column;height:100%;box-shadow:var(--shadow-1);transition:transform .22s var(--ease),box-shadow .22s var(--ease)}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.news-card__cover{position:relative;display:block;aspect-ratio:16/9;overflow:hidden;background:var(--brand-100)}
.news-card__cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.news-card:hover .news-card__cover img{transform:scale(1.03)}
.badge{position:absolute;left:12px;top:12px;display:inline-block;font-size:12px;letter-spacing:.04em;padding:4px 10px;border-radius:var(--radius-badge);background:var(--accent-50);color:var(--accent-600);font-weight:600}
.news-card__body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-card__title{font-size:17px;font-weight:600;line-height:1.5;color:var(--brand-900);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .22s var(--ease)}
.news-card:hover .news-card__title{color:var(--accent-600)}
.news-card__desc{font-size:15px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card__foot{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted)}
.news-card__foot .link-arrow{font-size:13px}
.empty-state{border:1px dashed var(--line);border-radius:var(--radius-card);padding:56px 20px;text-align:center;font-size:15px;color:var(--muted);background:#fff}

/* ---------- FAQ ---------- */
.faq-wrap{padding-left:16px}
.faq{border-top:1px solid var(--line)}
.faq__item{border-bottom:1px solid var(--line)}
.faq__q{position:relative;width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;background:none;border:0;padding:24px 0;font-size:17px;font-weight:600;color:var(--brand-900);text-align:left;cursor:pointer}
.faq__q::before{content:"";position:absolute;left:-16px;top:22px;bottom:22px;width:2px;background:var(--accent);opacity:0;transition:opacity .2s var(--ease)}
.faq__item.is-open .faq__q::before{opacity:1}
.faq__icon{position:relative;flex:0 0 16px;width:16px;height:16px}
.faq__icon::before,.faq__icon::after{content:"";position:absolute;background:var(--accent);border-radius:1px}
.faq__icon::before{left:0;top:7px;width:16px;height:2px}
.faq__icon::after{left:7px;top:0;width:2px;height:16px;transition:transform .22s var(--ease)}
.faq__item.is-open .faq__icon::after{transform:scaleY(0)}
.faq__a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
.faq__a-inner{padding:0 0 24px;font-size:15px;line-height:1.8;color:var(--muted);max-width:62em}

/* ---------- 转化区与表单 ---------- */
.cta-band{background:var(--accent-50);border-radius:20px;padding:44px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:10px}
.cta-band p{font-size:15px;color:var(--muted);max-width:40em}
.form-block{margin-top:44px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:32px;box-shadow:var(--shadow-1)}
.form-block h3{font-size:20px;color:var(--brand-900);margin-bottom:8px}
.form-block__tip{font-size:14px;color:var(--muted);margin-bottom:24px}
.inline-form{display:grid;grid-template-columns:1fr 1fr auto;gap:18px;align-items:end}
.field{display:flex;flex-direction:column}
.field label{font-size:13px;font-weight:600;color:var(--brand-700);margin-bottom:8px;letter-spacing:.02em}
.field input,.field select,.field textarea{margin:0;width:100%;min-height:48px;border:1px solid var(--line);border-radius:10px;background:#fff;padding:12px 14px;font-size:15px;font-family:inherit;color:var(--ink);line-height:1.5;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.field textarea{min-height:104px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#9AA5A0}
.field select{appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%236C7772' d='M1.4 0 6 4.6 10.6 0 12 1.4 6 7.4 0 1.4z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:38px}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--accent);box-shadow:0 0 0 4px rgba(238,106,46,.14);outline:none}
.field__error{display:none;font-size:13px;color:#B23A1E;margin-top:6px}
.field.has-error .field__error{display:block}
.field.has-error input,.field.has-error select{border-color:#B23A1E}
.privacy-note{font-size:12px;color:var(--muted);margin-top:14px;line-height:1.7}
.privacy-note a{color:var(--brand-500);text-decoration:underline;text-underline-offset:3px}
.privacy-note a:hover{color:var(--accent-600)}

/* ---------- 弹层 ---------- */
.modal{position:fixed;inset:0;z-index:100;display:none}
.modal.is-open{display:flex;align-items:center;justify-content:center;padding:20px}
.modal__overlay{position:absolute;inset:0;background:rgba(11,42,34,.42)}
.modal__panel{position:relative;z-index:1;width:100%;max-width:560px;max-height:90vh;overflow-y:auto;background:#fff;border-radius:20px;padding:32px;box-shadow:var(--shadow-3)}
.modal__panel h3{font-size:22px;color:var(--brand-900);margin-bottom:8px}
.modal__panel .modal__tip{font-size:14px;color:var(--muted);margin-bottom:24px}
.modal__close{position:absolute;right:16px;top:16px;width:36px;height:36px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--brand-700);font-size:18px;line-height:1;cursor:pointer;transition:border-color .2s var(--ease),color .2s var(--ease)}
.modal__close:hover{border-color:var(--accent);color:var(--accent-600)}
.modal__form{display:grid;gap:18px}
.modal__form .btn{width:100%}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(220,233,227,.76);padding:76px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-col h3{font-size:14px;letter-spacing:.08em;color:#fff;margin-bottom:20px;font-weight:600}
.footer-brand__mark{font-size:20px;font-weight:800;color:#fff;letter-spacing:.01em}
.footer-brand__sub{font-size:12px;letter-spacing:.14em;color:rgba(220,233,227,.6);margin-top:6px}
.footer-brand p{font-size:14px;line-height:1.8;margin-top:18px;max-width:26em;color:rgba(220,233,227,.72)}
.footer-col a{display:block;font-size:14px;padding:7px 0;color:rgba(220,233,227,.76)}
.footer-col a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px}
.footer-contact li{position:relative;padding-left:12px;margin-bottom:12px;font-size:14px;line-height:1.7}
.footer-contact li::before{content:"";position:absolute;left:0;top:7px;width:2px;height:14px;background:var(--accent);border-radius:1px}
.footer-contact li span{display:block;color:rgba(220,233,227,.6);font-size:12px;letter-spacing:.04em}
.footer-bottom{margin-top:56px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(220,233,227,.6)}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1200px){
  .stats__item{padding:0 22px}
}
@media screen and (max-width:1024px){
  .nav__menu{display:none}
  .nav__toggle{display:flex}
  .section{padding:72px 0}
  .section--tight{padding:56px 0}
  .hero{padding:56px 0 72px}
  .hero__grid{grid-template-columns:1fr;gap:40px}
  .hero__media{aspect-ratio:16/10}
  .offset-grid{grid-template-columns:1fr}
  .solution:nth-child(1),.solution:nth-child(2),.solution:nth-child(3),.solution:nth-child(4){grid-column:auto}
  .stats{padding:68px 0}
  .stats__grid{grid-template-columns:repeat(2,1fr);gap:36px 0}
  .stats__item{padding:0 24px}
  .stats__item:nth-child(odd){border-left:0;padding-left:0}
  .stats__item:nth-child(3){border-left:0;padding-left:0}
  .inline-form{grid-template-columns:1fr 1fr}
  .inline-form .field:last-of-type{grid-column:1/-1}
  .inline-form .btn{grid-column:1/-1;width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media screen and (max-width:640px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:52px 0}
  .section--tight{padding:44px 0}
  .topbar__links{display:none}
  .nav{min-height:66px}
  .brand__mark{font-size:18px}
  .brand__sub{display:none}
  .nav__drawer{padding-top:92px}
  .hero{padding:44px 0 56px}
  .hero__media{aspect-ratio:16/10;border-radius:16px}
  .hero__stat{right:14px;bottom:14px;padding:12px 16px}
  .hero__stat b{font-size:22px}
  .qa-row{grid-template-columns:34px 1fr;gap:16px;padding:22px 12px}
  .qa-row__no{width:34px;height:34px;border-radius:8px;font-size:13px}
  .solution{padding:22px}
  .stats__grid{grid-template-columns:1fr;gap:0}
  .stats__item{border-left:0;padding:22px 0;border-top:1px solid rgba(255,255,255,.14)}
  .stats__item:first-child{border-top:0;padding-top:0}
  .cta-band{padding:28px 22px}
  .form-block{padding:22px}
  .inline-form{grid-template-columns:1fr}
  .inline-form .field:last-of-type,.inline-form .btn{grid-column:auto}
  .modal__panel{padding:24px 20px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category1 */
:root{
  --brand-900:#0B2A22;
  --brand-700:#123B30;
  --brand-500:#1F5C49;
  --brand-100:#DCE9E3;
  --accent:#EE6A2E;
  --accent-600:#D2551D;
  --accent-50:#FDEDE4;
  --paper:#F6F4EE;
  --card:#FFFFFF;
  --ink:#14201C;
  --ink-2:#2A3330;
  --muted:#6C7772;
  --line:#E4E1D8;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow-1:0 1px 0 rgba(11,42,34,.04);
  --shadow-2:0 14px 30px rgba(11,42,34,.10);
  --shadow-3:0 30px 80px rgba(11,42,34,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  color:var(--ink-2);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease);}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,textarea:focus-visible{outline:3px solid rgba(238,106,46,.35);outline-offset:2px;}
button,input,select,textarea{font-family:inherit;font-size:1rem;color:inherit;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- 容器 ---------- */
.container{width:100%;max-width:1220px;margin:0 auto;padding:0 24px;}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--brand-900);color:rgba(255,255,255,.72);font-size:13px;line-height:1.7;}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:38px;flex-wrap:wrap;}
.topbar__links{display:flex;gap:22px;flex-wrap:wrap;}
.topbar a{color:rgba(255,255,255,.78);}
.topbar a:hover{color:var(--accent);}

/* ---------- 导航 ---------- */
.header{position:sticky;top:0;z-index:60;background:rgba(246,244,238,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);}
.nav{display:flex;align-items:center;justify-content:space-between;gap:28px;height:78px;}
.brand{display:flex;flex-direction:column;gap:2px;flex-shrink:0;}
.brand__mark{font-size:21px;font-weight:800;letter-spacing:.01em;color:var(--brand-900);line-height:1.1;}
.brand__mark span{color:var(--accent);font-weight:700;}
.brand__sub{font-size:12px;letter-spacing:.08em;color:var(--muted);}
.nav__menu{display:flex;align-items:center;gap:30px;}
.nav__item{position:relative;}
.nav__link{font-size:15px;font-weight:500;color:var(--ink);padding:6px 0;display:inline-block;}
.nav__link::after{content:"";position:absolute;left:0;bottom:-4px;width:0;height:2px;background:var(--accent);transition:width .26s var(--ease);}
.nav__link:hover{color:var(--brand-700);}
.nav__link:hover::after{width:100%;}
.nav__item.is-active .nav__link{color:var(--brand-900);font-weight:700;}
.nav__item.is-active .nav__link::before{content:"";position:absolute;left:50%;top:-10px;width:6px;height:6px;margin-left:-3px;border-radius:50%;background:var(--accent);}
.nav__item.is-active .nav__link::after{width:100%;}
.nav__right{display:flex;align-items:center;gap:14px;}
.nav__toggle{display:none;width:42px;height:38px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;padding:0 9px;}
.nav__toggle span{display:block;height:1.5px;background:var(--brand-900);margin:5px 0;transition:transform .24s var(--ease),opacity .24s var(--ease);}
.nav__toggle[aria-expanded="true"] span:first-child{transform:translateY(3.25px) rotate(45deg);}
.nav__toggle[aria-expanded="true"] span:last-child{transform:translateY(-3.25px) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;padding:13px 24px;border:1px solid transparent;cursor:pointer;transition:transform .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease),color .22s var(--ease);}
.btn--primary{background:var(--accent);color:#fff;box-shadow:0 8px 18px rgba(238,106,46,.22);}
.btn--primary:hover{background:var(--accent-600);transform:translateY(-2px);box-shadow:0 14px 26px rgba(238,106,46,.28);color:#fff;}
.btn--ghost{background:transparent;color:var(--brand-700);border-color:var(--brand-500);}
.btn--ghost:hover{background:var(--accent-50);border-color:var(--brand-500);transform:translateY(-2px);color:var(--brand-700);}
.btn--sm{padding:9px 18px;font-size:14px;}
.btn--block{width:100%;}
.arrow-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--accent-600);}
.arrow-link span{transition:transform .22s var(--ease);}
.arrow-link:hover span{transform:translateX(4px);}

/* ---------- 页面头部 ---------- */
.page-head{padding:44px 0 0;}
.breadcrumb{font-size:13px;color:var(--muted);display:flex;gap:8px;flex-wrap:wrap;}
.breadcrumb a:hover{color:var(--accent-600);}
.breadcrumb .current{color:var(--brand-700);font-weight:600;}
.page-head__eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:13px;letter-spacing:.08em;color:var(--muted);margin:26px 0 16px;}
.page-head__eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent);}
.page-head h1{font-size:clamp(32px,4.6vw,52px);font-weight:700;line-height:1.22;letter-spacing:-.01em;color:var(--brand-900);max-width:15em;}
.page-head__lead{margin-top:18px;font-size:17px;color:var(--ink-2);max-width:44em;}
.banner{margin-top:36px;border-radius:16px;overflow:hidden;aspect-ratio:21/9;background:var(--brand-100);position:relative;}
.banner img{width:100%;height:100%;object-fit:cover;}
.banner::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,42,34,0) 40%,rgba(11,42,34,.35));pointer-events:none;}

/* ---------- 区块通用 ---------- */
.section{padding:92px 0;}
.section--tight{padding:72px 0 92px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:44px;}
.section-head h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.3;color:var(--brand-900);}
.section-head p{font-size:14px;color:var(--muted);margin-top:10px;max-width:46em;}
.section-head__link{flex-shrink:0;}

/* ---------- 步骤流 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.step{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:32px 28px 30px;box-shadow:var(--shadow-1);transition:transform .28s var(--ease),box-shadow .28s var(--ease);}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.step__no{font-size:56px;font-weight:800;line-height:1;color:var(--brand-100);font-variant-numeric:tabular-nums;letter-spacing:-.02em;}
.step h3{margin-top:-14px;font-size:21px;font-weight:600;color:var(--brand-900);}
.step p{margin-top:12px;font-size:15px;line-height:1.8;color:var(--muted);}
.step__tag{display:inline-block;margin-top:18px;font-size:12px;letter-spacing:.06em;color:var(--accent-600);background:var(--accent-50);border-radius:6px;padding:4px 10px;}

/* ---------- 图文交错 ---------- */
.split-row{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:56px;}
.split-row + .split-row{margin-top:80px;}
.split-row--reverse .split-media{order:2;}
.split-media{border-radius:var(--radius-img);overflow:hidden;aspect-ratio:4/3;background:var(--brand-100);border:1px solid var(--line);}
.split-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.split-media:hover img{transform:scale(1.03);}
.split-body h3{font-size:clamp(22px,2.2vw,28px);font-weight:700;color:var(--brand-900);line-height:1.4;}
.split-body p{margin-top:16px;font-size:16px;line-height:1.9;color:var(--ink-2);}
.tick-list{margin-top:22px;display:grid;gap:12px;}
.tick-list li{position:relative;padding-left:20px;font-size:15px;color:var(--ink-2);}
.tick-list li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:2px;background:var(--accent);}

/* ---------- 行式列表 ---------- */
.rows{border-top:1px solid var(--line);}
.row-item{display:flex;gap:24px;align-items:flex-start;padding:26px 16px;border-bottom:1px solid var(--line);transition:background .24s var(--ease);}
.row-item:hover{background:#FBF9F4;}
.row-item__no{flex:0 0 40px;height:40px;border:1px solid var(--line);border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--accent);font-weight:700;font-size:15px;font-variant-numeric:tabular-nums;transition:border-color .24s var(--ease),background .24s var(--ease);}
.row-item:hover .row-item__no{border-color:var(--accent);background:#fff;}
.row-item__body h3{font-size:18px;font-weight:600;color:var(--brand-900);}
.row-item__body p{margin-top:8px;font-size:15px;color:var(--muted);line-height:1.8;max-width:62em;}

/* ---------- 数据条 ---------- */
.stats{background:var(--brand-900);color:#fff;padding:64px 0;position:relative;overflow:hidden;}
.stats::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.09) 1px,transparent 1px);background-size:22px 22px;opacity:.5;}
.stats .container{position:relative;z-index:1;}
.stats__grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat{padding:0 26px;border-left:1px solid rgba(255,255,255,.16);}
.stat:first-child{border-left:none;padding-left:0;}
.stat__num{font-size:clamp(40px,5vw,58px);font-weight:800;line-height:1.05;font-variant-numeric:tabular-nums;color:#fff;}
.stat__num small{font-size:22px;font-weight:700;margin-left:4px;color:var(--accent);}
.stat__label{margin-top:10px;font-size:13px;letter-spacing:.06em;color:rgba(255,255,255,.66);}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line);}
.faq details{border-bottom:1px solid var(--line);}
.faq summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:24px 0 24px 0;font-size:17px;font-weight:600;color:var(--brand-900);transition:padding .2s var(--ease),border-color .2s var(--ease);}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{content:"+";font-size:22px;font-weight:400;color:var(--brand-500);line-height:1;transition:transform .2s var(--ease),color .2s var(--ease);}
.faq details[open] summary{padding-left:14px;border-left:2px solid var(--accent);}
.faq details[open] summary::after{content:"−";color:var(--accent);}
.faq__answer{padding:0 0 26px 14px;font-size:15px;line-height:1.85;color:var(--muted);max-width:70em;}

/* ---------- CTA + 表单 ---------- */
.cta{background:var(--accent-50);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:80px 0;}
.cta__grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start;}
.cta h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;color:var(--brand-900);line-height:1.3;}
.cta__desc{margin-top:16px;font-size:16px;color:var(--ink-2);max-width:34em;}
.form-card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:32px;box-shadow:var(--shadow-1);}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field--full{grid-column:1 / -1;}
.field label{font-size:13px;font-weight:600;color:var(--brand-700);}
.field input,.field select,.field textarea{height:48px;border:1px solid var(--line);border-radius:10px;background:#fff;padding:0 14px;font-size:15px;color:var(--ink);transition:border-color .22s var(--ease),box-shadow .22s var(--ease);}
.field textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field select{appearance:none;-webkit-appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--brand-500) 50%),linear-gradient(135deg,var(--brand-500) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--accent);box-shadow:0 0 0 4px rgba(238,106,46,.14);outline:none;}
.form-actions{margin-top:22px;}
.privacy{margin-top:14px;font-size:12px;color:var(--muted);line-height:1.7;}
.privacy a{color:var(--accent-600);text-decoration:underline;}
.form-note{margin-top:10px;font-size:13px;color:#B23A1E;display:none;}
.form-note.is-on{display:block;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.72);padding:72px 0 32px;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.14);}
.footer-brand__mark{font-size:19px;font-weight:800;color:#fff;letter-spacing:.01em;}
.footer-brand__sub{font-size:12px;letter-spacing:.08em;color:var(--accent);margin-top:4px;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:32em;}
.footer-col h3{font-size:14px;font-weight:700;color:#fff;letter-spacing:.04em;margin-bottom:18px;}
.footer-col a{display:block;padding:6px 0;color:rgba(255,255,255,.7);border-bottom:1px solid transparent;}
.footer-col a:hover{color:var(--accent);border-bottom-color:rgba(238,106,46,.5);}
.footer-contact li{padding:7px 0 7px 12px;position:relative;color:rgba(255,255,255,.7);}
.footer-contact li::before{content:"";position:absolute;left:0;top:15px;width:2px;height:12px;background:var(--accent);}
.footer-contact span{color:rgba(255,255,255,.5);margin-right:8px;}
.footer-bottom{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;padding-top:26px;font-size:13px;color:rgba(255,255,255,.5);}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1024px){
  .nav{height:70px;}
  .nav__menu{position:fixed;left:0;right:0;top:0;bottom:0;background:var(--paper);flex-direction:column;align-items:flex-start;gap:0;padding:96px 24px 32px;transform:translateY(-8px);opacity:0;visibility:hidden;transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;z-index:70;overflow-y:auto;}
  .nav.is-open .nav__menu{opacity:1;visibility:visible;transform:translateY(0);}
  .nav__menu .nav__item{width:100%;border-bottom:1px solid var(--line);}
  .nav__menu .nav__link{font-size:20px;padding:18px 0;display:block;}
  .nav__item.is-active .nav__link::before{display:none;}
  .nav__link::after{display:none;}
  .nav__toggle{display:block;}
  .nav__right .btn--ghost{display:none;}
  .section{padding:72px 0;}
  .steps{grid-template-columns:1fr 1fr;}
  .split-row{gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .stats__grid{grid-template-columns:1fr 1fr;gap:32px 0;}
  .stat:nth-child(3){border-left:none;padding-left:0;}
  .cta__grid{grid-template-columns:1fr;gap:36px;}
}
@media screen and (max-width:640px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .topbar__inner{min-height:34px;font-size:12px;}
  .topbar__links{gap:16px;}
  .section{padding:52px 0;}
  .page-head{padding:28px 0 0;}
  .page-head h1{max-width:none;}
  .banner{aspect-ratio:16/10;margin-top:26px;}
  .steps{grid-template-columns:1fr;gap:20px;}
  .step{padding:24px 20px;}
  .split-row{grid-template-columns:1fr;gap:24px;}
  .split-row--reverse .split-media{order:0;}
  .split-row + .split-row{margin-top:52px;}
  .row-item{padding:20px 8px;gap:16px;}
  .stats{padding:48px 0;}
  .stat{padding:0 0 0 18px;}
  .stat:nth-child(odd){border-left:none;padding-left:0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:32px;}
  .form-grid{grid-template-columns:1fr;}
  .form-card{padding:24px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}

/* roulang page: article */
:root{
  --brand-900:#0B2A22;
  --brand-700:#123B30;
  --brand-500:#1F5C49;
  --brand-100:#DCE9E3;
  --accent:#EE6A2E;
  --accent-600:#D2551D;
  --accent-50:#FDEDE4;
  --paper:#F6F4EE;
  --card:#FFFFFF;
  --ink:#14201C;
  --ink-2:#2A3330;
  --muted:#6C7772;
  --line:#E4E1D8;
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:20px;
  --shadow:0 1px 0 rgba(11,42,34,.04);
  --shadow-hover:0 14px 30px rgba(11,42,34,.10);
  --shadow-modal:0 30px 80px rgba(11,42,34,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;background:transparent}
button{font-family:inherit;font-size:inherit}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4,p{margin:0}
table{border-collapse:collapse}
:focus-visible{outline:3px solid rgba(238,106,46,.35);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1220px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* ---------- 顶部信息条 ---------- */
.topbar{
  border-bottom:1px solid var(--line);
  background:var(--paper);
  font-size:13px;
  color:var(--muted);
}
.topbar .container{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;min-height:38px;padding-top:6px;padding-bottom:6px;
}
.topbar__links{display:flex;gap:22px}
.topbar__links a{position:relative;transition:color .2s var(--ease)}
.topbar__links a:hover{color:var(--accent-600)}
.topbar__links a::after{
  content:"";position:absolute;left:0;bottom:-2px;width:0;height:1px;
  background:var(--accent);transition:width .25s var(--ease);
}
.topbar__links a:hover::after{width:100%}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,238,.93);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav{
  display:flex;align-items:center;justify-content:space-between;
  gap:28px;height:76px;
}
.brand{display:flex;flex-direction:column;gap:2px;flex:0 0 auto}
.brand__mark{
  font-size:20px;font-weight:800;letter-spacing:.01em;color:var(--brand-900);line-height:1.2;
}
.brand__mark span{color:var(--accent);font-size:16px;font-weight:700;margin-left:3px}
.brand__sub{font-size:11px;letter-spacing:.16em;color:var(--muted)}
.nav__menu{display:flex;align-items:center;gap:30px;list-style:none}
.nav__item{position:relative}
.nav__link{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;font-weight:500;color:var(--ink-2);
  transition:color .22s var(--ease);
}
.nav__link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--accent);transition:width .28s var(--ease);
}
.nav__link:hover{color:var(--brand-900)}
.nav__link:hover::after{width:100%}
.nav__item.is-active .nav__link{color:var(--brand-900);font-weight:600}
.nav__item.is-active .nav__link::after{width:100%}
.nav__item.is-active::before{
  content:"";position:absolute;left:50%;top:-7px;width:6px;height:6px;
  border-radius:50%;background:var(--accent);transform:translateX(-50%);
}
.nav__right{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.nav__toggle{
  display:none;position:relative;z-index:90;
  width:44px;height:38px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:#fff;cursor:pointer;padding:0 11px;
  flex-direction:column;justify-content:center;gap:5px;
}
.nav__toggle span{display:block;height:1.5px;width:100%;background:var(--brand-900);transition:transform .25s var(--ease),opacity .25s var(--ease)}
.nav__toggle[aria-expanded="true"] span:first-child{transform:translateY(3.25px) rotate(45deg)}
.nav__toggle[aria-expanded="true"] span:last-child{transform:translateY(-3.25px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border:1px solid transparent;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:transform .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease),color .22s var(--ease);
}
.btn--primary{background:var(--accent);color:#fff}
.btn--primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn--ghost{background:transparent;border-color:var(--brand-500);color:var(--brand-700)}
.btn--ghost:hover{background:var(--accent-50);border-color:var(--brand-500);color:var(--brand-700);transform:translateY(-2px)}
.btn--light{background:#fff;color:var(--brand-900)}
.btn--light:hover{background:var(--accent-50);color:var(--brand-900);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn--sm{height:38px;padding:0 16px;font-size:14px}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-block;font-size:12px;letter-spacing:.06em;
  background:var(--accent-50);color:var(--accent-600);
  border-radius:6px;padding:4px 10px;line-height:1.4;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--brand-500);font-weight:600;
}
.eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent)}

/* ---------- 文章头部 ---------- */
main{padding-bottom:8px}
.article-shell{max-width:860px;margin:0 auto;padding:36px 0 8px}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);margin-bottom:22px;
}
.crumbs a{transition:color .2s var(--ease)}
.crumbs a:hover{color:var(--accent-600)}
.crumbs .sep{color:#C6C2B8}
.crumbs .current{color:var(--ink-2);font-weight:500}
.article-head{padding-bottom:6px}
.article-title{
  font-size:clamp(28px,3.6vw,40px);
  line-height:1.35;font-weight:700;letter-spacing:-.01em;
  color:var(--ink);max-width:820px;margin:14px 0 16px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--muted);
  padding-bottom:24px;border-bottom:1px solid var(--line);
}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:#C6C2B8;display:inline-block}
.article-cover{
  margin:34px 0 40px;border-radius:18px;overflow:hidden;
  aspect-ratio:16/9;background:var(--brand-100);
}
.article-cover img{width:100%;height:100%;object-fit:cover}

/* ---------- 正文排版 ---------- */
.article-body{
  font-size:17px;line-height:1.9;color:var(--ink-2);
  max-width:820px;
}
.article-body p{margin:0 0 1.15em}
.article-body h2{
  font-size:clamp(22px,2.3vw,28px);line-height:1.4;font-weight:700;
  color:var(--brand-700);margin:48px 0 16px;
  padding-left:12px;border-left:3px solid var(--accent);
}
.article-body h3{
  font-size:20px;line-height:1.45;font-weight:600;
  color:var(--brand-700);margin:32px 0 12px;
}
.article-body h4{font-size:17px;font-weight:600;color:var(--ink);margin:24px 0 10px}
.article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.15em}
.article-body li{margin-bottom:.5em}
.article-body li::marker{color:var(--accent);font-weight:600}
.article-body blockquote{
  margin:26px 0;padding:22px;background:var(--card);
  border-left:3px solid var(--brand-500);border-radius:0 12px 12px 0;
  color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body a{color:var(--accent-600);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.article-body a:hover{text-decoration-thickness:2px}
.article-body img{border-radius:12px;margin:24px auto;width:100%}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.article-body table{
  width:100%;font-size:15px;line-height:1.7;margin:24px 0;
  border:1px solid var(--line);border-radius:12px;overflow:hidden;
  display:block;overflow-x:auto;white-space:nowrap;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;text-align:left}
.article-body th{background:var(--paper);font-weight:600;color:var(--brand-700)}
.article-body tr:nth-child(even) td{background:#FCFBF8}
.article-body strong{color:var(--brand-700)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}

.article-foot{
  margin-top:44px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.back-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;color:var(--brand-500);
  transition:color .2s var(--ease),gap .2s var(--ease);
}
.back-link:hover{color:var(--accent-600);gap:12px}
.article-empty{
  margin:40px 0 0;padding:48px 24px;text-align:center;
  border:1px dashed var(--line);border-radius:var(--radius);background:var(--card);
}
.article-empty p{font-size:16px;color:var(--muted);margin-bottom:18px}

/* ---------- 板块通用 ---------- */
.section{padding:72px 0}
.section__head{
  display:flex;align-items:baseline;justify-content:space-between;gap:20px;
  padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:34px;
}
.section__head h2{font-size:clamp(22px,2.5vw,30px);line-height:1.3;font-weight:700;color:var(--brand-700)}
.section__head .more{font-size:14px;font-weight:600;color:var(--brand-500);transition:color .2s var(--ease)}
.section__head .more:hover{color:var(--accent-600)}

/* ---------- 内容卡片 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.post-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#D8D4C8}
.post-card__media{aspect-ratio:16/9;overflow:hidden;background:var(--brand-100)}
.post-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease)}
.post-card:hover .post-card__media img{transform:scale(1.03)}
.post-card__body{padding:22px 22px 18px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-card__title{
  font-size:17px;font-weight:600;line-height:1.5;color:var(--ink);
  transition:color .2s var(--ease);
}
.post-card:hover .post-card__title{color:var(--accent-600)}
.post-card__desc{font-size:15px;line-height:1.7;color:var(--muted)}
.post-card__foot{
  margin-top:auto;padding-top:13px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);
}
.post-card__foot i{color:var(--brand-500);transition:transform .25s var(--ease)}
.post-card:hover .post-card__foot i{transform:translateX(4px);color:var(--accent)}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line)}
.faq__item{border-bottom:1px solid var(--line)}
.faq__q{
  position:relative;display:block;width:100%;text-align:left;
  padding:22px 44px 22px 16px;background:none;border:0;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.5;
  transition:color .2s var(--ease);
}
.faq__q::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:2px;
  background:var(--accent);opacity:0;transition:opacity .2s var(--ease);
}
.faq__q:hover{color:var(--accent-600)}
.faq__item.is-open .faq__q::before{opacity:1}
.faq__icon{
  position:absolute;right:10px;top:22px;font-size:20px;line-height:1.4;
  color:var(--accent);font-weight:400;transition:transform .25s var(--ease);
}
.faq__a{max-height:0;overflow:hidden;transition:max-height .2s ease}
.faq__a-inner{padding:0 44px 24px 16px;font-size:15px;line-height:1.8;color:var(--muted)}

/* ---------- 深色 CTA ---------- */
.cta-dark{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  background:var(--brand-900);color:#fff;padding:52px 48px;
}
.cta-dark__bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.14;
}
.cta-dark__inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-dark h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35;font-weight:700;margin-bottom:12px}
.cta-dark p{font-size:15px;line-height:1.85;color:#BFD1CA;max-width:560px}
.cta-dark__actions{display:flex;gap:14px;flex-wrap:wrap}
.cta-note{margin-top:18px;font-size:12px;color:#93A8A1}
.cta-note a{color:#D6E3DE;text-decoration:underline;text-underline-offset:3px}
.cta-note a:hover{color:var(--accent)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:#CFDAD5;padding:76px 0 28px;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:44px}
.footer-col h3{
  font-size:14px;font-weight:600;letter-spacing:.08em;color:#fff;margin-bottom:18px;
}
.footer-col a{
  display:block;font-size:14px;color:#B9C7C1;margin-bottom:12px;
  transition:color .2s var(--ease);
}
.footer-col a:hover{color:var(--accent)}
.footer-brand__mark{font-size:20px;font-weight:800;color:#fff;letter-spacing:.01em}
.footer-brand__sub{font-size:12px;letter-spacing:.16em;color:#8FA69D;margin:8px 0 16px}
.footer-brand p{font-size:14px;line-height:1.85;color:#B9C7C1;max-width:380px}
.footer-contact{list-style:none;margin:0;padding:0}
.footer-contact li{
  position:relative;font-size:14px;line-height:1.6;color:#B9C7C1;
  margin-bottom:14px;padding-left:12px;
}
.footer-contact li::before{
  content:"";position:absolute;left:0;top:4px;bottom:4px;width:2px;background:var(--accent);
}
.footer-contact span{display:block;font-size:12px;letter-spacing:.06em;color:#8FA69D;margin-bottom:2px}
.footer-bottom{
  margin-top:50px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8FA69D;
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container{padding:0 22px}
  .nav__toggle{display:flex}
  .nav__menu{
    position:fixed;top:0;left:0;right:0;bottom:0;
    z-index:80;display:flex;flex-direction:column;align-items:stretch;
    gap:0;background:var(--paper);padding:104px 24px 40px;
    transform:translateX(100%);transition:transform .32s var(--ease);
    overflow-y:auto;
  }
  .nav__menu.is-open{transform:translateX(0)}
  .nav__item{width:100%;border-bottom:1px solid var(--line)}
  .nav__item.is-active::before{display:none}
  .nav__link{display:block;padding:18px 0;font-size:20px;font-weight:500}
  .nav__link::after{display:none}
  .section{padding:60px 0}
  .card-grid{grid-template-columns:repeat(2,1fr);gap:24px}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:34px}
  .cta-dark{padding:44px 32px}
}
@media (max-width:768px){
  .topbar .container{justify-content:center;text-align:center}
  .topbar__links{gap:18px}
  .article-shell{padding:26px 0 4px}
  .article-title{font-size:clamp(24px,6vw,32px)}
  .article-body{font-size:16px}
  .section{padding:52px 0}
  .footer-grid{grid-template-columns:1fr;gap:30px}
}
@media (max-width:520px){
  .container{padding:0 20px}
  .nav{height:66px;gap:14px}
  .brand__mark{font-size:18px}
  .brand__sub{font-size:10px;letter-spacing:.12em}
  .card-grid{grid-template-columns:1fr}
  .article-cover{border-radius:14px;aspect-ratio:16/10}
  .cta-dark{padding:36px 22px;border-radius:var(--radius)}
  .cta-dark__inner{flex-direction:column;align-items:flex-start}
  .cta-dark__actions{width:100%}
  .cta-dark__actions .btn{width:100%}
  .article-meta{font-size:12px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}

/* roulang page: category2 */
:root{
  --brand-900:#0B2A22;
  --brand-700:#123B30;
  --brand-500:#1F5C49;
  --brand-100:#DCE9E3;
  --accent:#EE6A2E;
  --accent-600:#D2551D;
  --accent-50:#FDEDE4;
  --paper:#F6F4EE;
  --card:#FFFFFF;
  --ink:#14201C;
  --ink-2:#2A3330;
  --muted:#6C7772;
  --line:#E4E1D8;
  --danger:#B23A1E;
  --r-card:16px;
  --r-img:14px;
  --r-btn:10px;
  --r-badge:6px;
  --sh-1:0 1px 0 rgba(11,42,34,.04);
  --sh-2:0 14px 30px rgba(11,42,34,.10);
  --sh-3:0 30px 80px rgba(11,42,34,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec-y:92px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:17px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-500);text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease)}
a:hover{color:var(--accent-600)}
p{margin:0 0 1.15em}
p:last-child{margin-bottom:0}
h1,h2,h3,h4{margin:0;color:var(--brand-700);font-weight:700;line-height:1.3}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
:focus-visible{outline:3px solid rgba(238,106,46,.35);outline-offset:2px;border-radius:4px}
::selection{background:var(--accent-50);color:var(--accent-600)}

/* ============ 容器 ============ */
.container{width:100%;max-width:1220px;margin:0 auto;padding:0 24px}
.sec{padding:var(--sec-y) 0}
.sec--tight{padding:56px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.sec-head__rule{flex:1;height:1px;background:var(--line);margin-bottom:12px}
.sec-head h2{font-size:clamp(24px,2.6vw,34px);letter-spacing:-.01em}
.sec-head p{margin:10px 0 0;color:var(--muted);font-size:15px}
.sec-link{font-size:15px;font-weight:600;color:var(--brand-500);white-space:nowrap;display:inline-flex;align-items:center;gap:8px}
.sec-link .arw{transition:transform .22s var(--ease)}
.sec-link:hover .arw{transform:translateX(4px)}

/* ============ 顶部信息条 ============ */
.topbar{background:var(--brand-900);color:rgba(255,255,255,.78);font-size:13px;letter-spacing:.02em}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:38px}
.topbar__links{display:flex;gap:20px}
.topbar__links a{color:rgba(255,255,255,.78)}
.topbar__links a:hover{color:var(--accent)}

/* ============ 导航 ============ */
.nav-wrap{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,238,.94);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:28px;height:78px}
.brand{display:flex;flex-direction:column;gap:2px;color:var(--brand-700)}
.brand__mark{font-size:21px;font-weight:800;letter-spacing:-.01em;line-height:1.2}
.brand__mark span{color:var(--accent)}
.brand__sub{font-size:12px;letter-spacing:.14em;color:var(--muted)}
.brand:hover{color:var(--brand-700)}
.nav__menu{display:flex;align-items:center;gap:34px}
.nav__item{position:relative}
.nav__link{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;font-weight:500;color:var(--ink);
}
.nav__link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--accent);transition:width .26s var(--ease);
}
.nav__link:hover{color:var(--brand-700)}
.nav__link:hover::after{width:100%}
.nav__item.is-active .nav__link{color:var(--brand-700);font-weight:600}
.nav__item.is-active .nav__link::before{
  content:"";position:absolute;left:0;top:-8px;width:6px;height:6px;border-radius:50%;
  background:var(--accent);
}
.nav__item.is-active .nav__link::after{width:100%;background:var(--brand-500)}
.nav__right{display:flex;align-items:center;gap:14px}
.nav__toggle{display:none;width:40px;height:34px;position:relative}
.nav__toggle span{position:absolute;left:6px;right:6px;height:1.5px;background:var(--brand-700);transition:transform .24s var(--ease),opacity .2s var(--ease)}
.nav__toggle span:first-child{top:11px}
.nav__toggle span:last-child{top:20px}
.nav__toggle[aria-expanded="true"] span:first-child{transform:translateY(4.5px) rotate(45deg)}
.nav__toggle[aria-expanded="true"] span:last-child{transform:translateY(-4.5px) rotate(-45deg)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease),color .22s var(--ease);
}
.btn--primary{background:var(--accent);color:#fff;box-shadow:0 6px 16px rgba(238,106,46,.22)}
.btn--primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(210,85,29,.26)}
.btn--ghost{background:transparent;color:var(--brand-700);border-color:var(--brand-500)}
.btn--ghost:hover{background:var(--accent-50);border-color:var(--brand-500);color:var(--brand-700);transform:translateY(-2px)}
.btn--sm{padding:9px 18px;font-size:14px}
.btn--lg{padding:16px 32px;font-size:16px}
.btn:active{transform:translateY(0)}

/* ============ 面包屑 ============ */
.crumb{font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;gap:8px;align-items:center;padding-top:28px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--accent-600)}
.crumb span.sep{color:#BFC5BE}
.crumb .current{color:var(--brand-700);font-weight:600}

/* ============ 页面引言区 ============ */
.page-hero{padding:24px 0 0}
.page-hero__label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--brand-500);font-weight:600;
  text-transform:uppercase;margin-bottom:16px;
}
.page-hero__label i{width:8px;height:8px;border-radius:50%;background:var(--accent);display:block}
.page-hero h1{
  font-size:clamp(32px,4.6vw,52px);line-height:1.22;letter-spacing:-.01em;
  font-weight:700;max-width:900px;
}
.page-hero__sub{margin-top:18px;font-size:18px;line-height:1.8;color:var(--ink-2);max-width:760px}
.page-hero__meta{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-top:22px;font-size:13px;color:var(--muted)}
.page-hero__meta b{color:var(--brand-700);font-weight:600}
.page-hero__meta .vr{width:1px;height:12px;background:var(--line);display:block}
.banner{
  margin-top:38px;position:relative;border-radius:16px;overflow:hidden;
  aspect-ratio:21/9;background:var(--brand-100);
}
.banner img{width:100%;height:100%;object-fit:cover}
.banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,42,34,.10),rgba(11,42,34,.04));
}
.banner__cap{
  position:absolute;left:28px;bottom:24px;z-index:2;color:#fff;
  font-size:14px;letter-spacing:.04em;text-shadow:0 2px 10px rgba(11,42,34,.5);
}

/* ============ 步骤流 ============ */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:8px}
.step{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:30px 28px 30px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  overflow:hidden;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D6D2C6}
.step__num{
  font-size:64px;font-weight:800;line-height:1;color:var(--brand-100);
  letter-spacing:-.02em;display:block;margin-bottom:14px;
}
.step h3{font-size:21px;font-weight:600;color:var(--brand-700);margin-bottom:12px;position:relative}
.step h3::before{
  content:"";position:absolute;left:-14px;top:8px;width:3px;height:16px;background:var(--accent);border-radius:2px;
}
.step p{font-size:15px;color:var(--ink-2);margin:0}
.step__tag{
  display:inline-block;margin-top:20px;font-size:12px;letter-spacing:.06em;
  color:var(--accent-600);background:var(--accent-50);border-radius:var(--r-badge);padding:4px 10px;
}

/* ============ 图文交错 ============ */
.media-row{
  display:grid;grid-template-columns:7fr 5fr;gap:36px;align-items:center;
  padding:40px 0;border-top:1px solid var(--line);
}
.media-row:first-of-type{border-top:0;padding-top:8px}
.media-row--reverse{grid-template-columns:5fr 7fr}
.media-row--reverse .media-row__img{order:2}
.media-row--reverse .media-row__body{order:1}
.media-row__img{
  border-radius:var(--r-img);overflow:hidden;background:var(--brand-100);
  aspect-ratio:4/3;position:relative;
}
.media-row__img img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.media-row:hover .media-row__img img{transform:scale(1.03)}
.media-row__body h3{font-size:23px;font-weight:600;margin-bottom:14px}
.media-row__body p{font-size:15.5px;color:var(--ink-2);line-height:1.85}
.check-list{margin-top:20px;display:grid;gap:12px}
.check-list li{
  position:relative;padding-left:22px;font-size:15px;color:var(--ink-2);line-height:1.7;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:10px;height:10px;
  border:1.5px solid var(--accent);border-radius:3px;background:var(--accent-50);
}

/* ============ 字段清单条 ============ */
.field-strip{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:12px 28px;box-shadow:var(--sh-1);
}
.field-strip__row{
  display:grid;grid-template-columns:44px 1fr 2fr;gap:22px;align-items:center;
  padding:22px 0;border-bottom:1px solid var(--line);
  transition:background-color .22s var(--ease);
}
.field-strip__row:last-child{border-bottom:0}
.field-strip__row:hover{background:#FBF9F4}
.field-strip__idx{
  width:40px;height:40px;border:1px solid var(--line);border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  color:var(--accent);font-weight:700;font-size:15px;
  transition:border-color .22s var(--ease);
}
.field-strip__row:hover .field-strip__idx{border-color:var(--accent)}
.field-strip__t{font-size:18px;font-weight:600;color:var(--brand-700)}
.field-strip__d{font-size:15px;color:var(--muted);line-height:1.75}

/* ============ 深色数据区 ============ */
.stats{
  background:var(--brand-900);color:#fff;position:relative;overflow:hidden;
  padding:76px 0;
}
.stats::before{
  content:"";position:absolute;inset:0;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:22px 22px;
}
.stats .container{position:relative;z-index:2}
.stats__head{max-width:640px;margin-bottom:44px}
.stats__head h2{color:#fff;font-size:clamp(24px,2.6vw,32px)}
.stats__head p{color:rgba(255,255,255,.7);font-size:15px;margin-top:12px}
.stats__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat{padding:0 28px;border-left:1px solid rgba(255,255,255,.16)}
.stat:first-child{border-left:0;padding-left:0}
.stat__num{font-size:clamp(40px,5vw,60px);font-weight:800;line-height:1.05;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.stat__num em{font-style:normal;font-size:.42em;font-weight:700;color:var(--accent);margin-left:4px;letter-spacing:0}
.stat__label{margin-top:12px;font-size:13px;letter-spacing:.06em;color:rgba(255,255,255,.62)}

/* ============ FAQ ============ */
.faq{border-top:1px solid var(--line)}
.faq__item{border-bottom:1px solid var(--line);position:relative}
.faq__item::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;
  background:var(--accent);opacity:0;transition:opacity .22s var(--ease);
}
.faq__item[open]::before{opacity:1}
.faq__q{
  display:flex;align-items:flex-start;justify-content:space-between;gap:24px;
  padding:22px 0;font-size:17px;font-weight:600;color:var(--brand-700);
  cursor:pointer;list-style:none;
}
.faq__q::-webkit-details-marker{display:none}
.faq__q:hover{color:var(--accent-600)}
.faq__icon{
  position:relative;flex:0 0 20px;width:20px;height:20px;margin-top:6px;
}
.faq__icon::before,.faq__icon::after{
  content:"";position:absolute;background:var(--accent);border-radius:2px;
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.faq__icon::before{left:0;top:9px;width:20px;height:2px}
.faq__icon::after{left:9px;top:0;width:2px;height:20px}
.faq__item[open] .faq__icon::after{transform:scaleY(0);opacity:0}
.faq__a{padding:0 0 26px;max-width:860px;font-size:15.5px;line-height:1.85;color:var(--muted)}

/* ============ CTA ============ */
.cta-band{
  background:var(--accent-50);border-radius:20px;padding:44px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);color:var(--brand-700)}
.cta-band p{margin-top:12px;font-size:15px;color:var(--ink-2);max-width:560px}

/* ============ 表单 ============ */
.form-panel{
  margin-top:36px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:36px;box-shadow:var(--sh-1);
}
.form-panel h3{font-size:21px;font-weight:600;margin-bottom:10px}
.form-panel > p{font-size:15px;color:var(--muted);margin-bottom:26px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px 24px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--brand-700);margin-bottom:8px;letter-spacing:.02em}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;background:#fff;
  border:1px solid var(--line);border-radius:10px;font-size:15px;color:var(--ink);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:110px;padding:12px 14px;line-height:1.7;resize:vertical}
.field select{
  appearance:none;-webkit-appearance:none;
  background-image:linear-gradient(45deg,transparent 50%,var(--brand-500) 50%),linear-gradient(135deg,var(--brand-500) 50%,transparent 50%);
  background-position:calc(100% - 19px) 21px,calc(100% - 14px) 21px;
  background-size:5px 5px,5px 5px;background-repeat:no-repeat;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--accent);box-shadow:0 0 0 4px rgba(238,106,46,.14);
}
.field--full{grid-column:1 / -1}
.form-actions{margin-top:26px}
.form-actions .btn{width:100%}
.privacy-note{margin-top:14px;font-size:12px;color:var(--muted);line-height:1.7}
.privacy-note a{color:var(--brand-500);text-decoration:underline}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.74);padding:76px 0 30px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px}
.footer-brand__mark{font-size:19px;font-weight:800;color:#fff;letter-spacing:-.01em}
.footer-brand__sub{font-size:12px;letter-spacing:.14em;color:rgba(255,255,255,.5);margin-top:6px}
.footer-col p{font-size:14px;line-height:1.8;margin-top:18px;color:rgba(255,255,255,.6)}
.footer-col h3{font-size:14px;color:#fff;letter-spacing:.08em;font-weight:600;margin-bottom:20px}
.footer-col a{display:block;font-size:14.5px;color:rgba(255,255,255,.74);padding:6px 0;border-bottom:1px solid transparent}
.footer-col a:hover{color:var(--accent);border-bottom-color:rgba(238,106,46,.6)}
.footer-contact li{font-size:14.5px;padding:8px 0;position:relative;padding-left:14px;line-height:1.7}
.footer-contact li::before{
  content:"";position:absolute;left:0;top:17px;width:2px;height:14px;background:var(--accent);
}
.footer-contact span{display:block;font-size:12px;color:rgba(255,255,255,.45);letter-spacing:.06em;margin-bottom:2px}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  :root{--sec-y:72px}
  .nav__menu{
    position:fixed;left:0;right:0;top:auto;bottom:0;top:78px;
    background:var(--paper);flex-direction:column;align-items:stretch;gap:0;
    padding:18px 24px 120px;border-bottom:1px solid var(--line);
    transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:opacity .24s var(--ease),transform .24s var(--ease);
    height:calc(100vh - 78px);overflow-y:auto;
  }
  .nav__menu.is-open{opacity:1;transform:translateY(0);pointer-events:auto}
  .nav__item{border-bottom:1px solid var(--line)}
  .nav__link{font-size:20px;padding:18px 0;display:block}
  .nav__link::after{display:none}
  .nav__item.is-active .nav__link::before{top:26px;left:auto;right:0}
  .nav__toggle{display:block}
  .media-row,.media-row--reverse{grid-template-columns:1fr;gap:26px}
  .media-row--reverse .media-row__img{order:1}
  .media-row--reverse .media-row__body{order:2}
  .steps{grid-template-columns:1fr 1fr}
  .stats__grid{grid-template-columns:1fr 1fr;gap:34px 0}
  .stat:nth-child(3){border-left:0;padding-left:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:640px){
  :root{--sec-y:52px}
  body{font-size:16px}
  .container{padding:0 20px}
  .topbar__inner{height:auto;padding:8px 0;flex-direction:column;align-items:flex-start;gap:6px}
  .topbar__links{gap:16px;flex-wrap:wrap}
  .nav{height:70px}
  .brand__mark{font-size:18px}
  .nav__menu{top:70px;height:calc(100vh - 70px)}
  .nav__right .btn{display:none}
  .steps{grid-template-columns:1fr}
  .stats__grid{grid-template-columns:1fr 1fr}
  .stat{padding:0 16px}
  .stat:nth-child(odd){border-left:0;padding-left:0}
  .page-hero__sub{font-size:16px}
  .banner{aspect-ratio:16/9}
  .field-strip{padding:8px 20px}
  .field-strip__row{grid-template-columns:40px 1fr;gap:14px 16px;align-items:start}
  .field-strip__d{grid-column:1 / -1;padding-left:0}
  .cta-band{padding:30px 24px;border-radius:16px}
  .cta-band .btn{width:100%}
  .form-panel{padding:24px 20px}
  .form-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;gap:10px}
}

/* roulang page: category3 */
:root{
  --brand-900:#0B2A22;
  --brand-700:#123B30;
  --brand-500:#1F5C49;
  --brand-100:#DCE9E3;
  --accent:#EE6A2E;
  --accent-600:#D2551D;
  --accent-50:#FDEDE4;
  --paper:#F6F4EE;
  --card:#FFFFFF;
  --ink:#14201C;
  --ink-2:#2A3330;
  --muted:#6C7772;
  --line:#E4E1D8;
  --radius-card:16px;
  --radius-img:14px;
  --radius-btn:10px;
  --shadow-1:0 1px 0 rgba(11,42,34,.04);
  --shadow-2:0 14px 30px rgba(11,42,34,.10);
  --shadow-3:0 30px 80px rgba(11,42,34,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--accent-600);}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
:focus-visible{outline:3px solid rgba(238,106,46,.35);outline-offset:2px;border-radius:4px;}
.num{font-variant-numeric:tabular-nums;}

.container{max-width:1220px;margin:0 auto;padding:0 24px;width:100%;}
.section{padding:92px 0;}
.section--tight{padding:64px 0;}
.section--paper{background:var(--paper);}
.section--white{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--brand-900);color:#B9CFC6;font-size:13px;}
.topbar__inner{max-width:1220px;margin:0 auto;padding:0 24px;height:38px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
.topbar__links{display:flex;gap:20px;flex-wrap:wrap;}
.topbar__links a{color:#B9CFC6;font-size:13px;}
.topbar__links a:hover{color:var(--accent);}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(246,244,238,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);}
.nav{max-width:1220px;margin:0 auto;padding:0 24px;height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:flex;flex-direction:column;line-height:1.1;text-decoration:none;flex-shrink:0;}
.brand__mark{font-size:20px;font-weight:800;letter-spacing:.02em;color:var(--brand-900);}
.brand__mark span{color:var(--accent);font-weight:700;}
.brand__sub{font-size:11px;letter-spacing:.2em;color:var(--muted);margin-top:5px;}
.brand:hover .brand__mark{color:var(--brand-900);}
.nav__menu{display:flex;align-items:center;gap:30px;margin:0;padding:0;list-style:none;}
.nav__item{position:relative;}
.nav__link{position:relative;display:inline-block;padding:6px 0;font-size:15px;font-weight:500;color:var(--ink);text-decoration:none;}
.nav__link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--accent);transition:width .24s var(--ease);}
.nav__link:hover{color:var(--brand-900);}
.nav__link:hover::after{width:100%;}
.nav__item.is-active .nav__link{color:var(--brand-900);font-weight:600;}
.nav__item.is-active .nav__link::before{content:"";position:absolute;top:-8px;left:50%;transform:translateX(-50%);width:6px;height:6px;border-radius:50%;background:var(--accent);}
.nav__right{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.nav__toggle{display:none;position:relative;z-index:70;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:transparent;cursor:pointer;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:6px;}
.nav__toggle span{display:block;width:18px;height:1.5px;background:var(--brand-900);transition:transform .24s var(--ease),opacity .24s var(--ease);}
.nav__toggle[aria-expanded="true"] span:first-child{transform:translateY(3.75px) rotate(45deg);}
.nav__toggle[aria-expanded="true"] span:last-child{transform:translateY(-3.75px) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:var(--radius-btn);font-size:15px;font-weight:600;padding:13px 26px;cursor:pointer;text-decoration:none;transition:transform .22s var(--ease),background-color .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);}
.btn--primary{background:var(--accent);color:#fff;box-shadow:0 1px 0 rgba(11,42,34,.04);}
.btn--primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(11,42,34,.14);}
.btn--ghost{background:transparent;border-color:var(--brand-500);color:var(--brand-700);}
.btn--ghost:hover{background:var(--accent-50);border-color:var(--brand-500);color:var(--brand-900);transform:translateY(-2px);}
.btn--sm{padding:9px 18px;font-size:14px;}
.btn--block{width:100%;}
.btn .arrow{transition:transform .22s var(--ease);}
.btn:hover .arrow{transform:translateX(4px);}

/* ---------- 通用标题 ---------- */
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.08em;color:var(--muted);}
.eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent);flex-shrink:0;}
.h1{font-size:clamp(32px,4.6vw,52px);font-weight:700;line-height:1.22;letter-spacing:-.01em;color:var(--brand-900);}
.h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.3;color:var(--brand-900);}
.h3{font-size:21px;font-weight:600;line-height:1.42;color:var(--brand-900);}
.lead{font-size:17px;line-height:1.9;color:var(--ink-2);}
.muted{color:var(--muted);font-size:15px;line-height:1.8;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:44px;}
.section-head .text-link{font-size:14px;font-weight:600;color:var(--brand-700);white-space:nowrap;}
.section-head .text-link:hover{color:var(--accent-600);}

/* ---------- 面包屑 ---------- */
.breadcrumb{font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--accent-600);}
.breadcrumb .sep{color:#B8BFBA;}
.breadcrumb .current{color:var(--brand-900);font-weight:600;}

/* ---------- 引言区 ---------- */
.banner{padding:52px 0 0;}
.banner__head{margin-top:22px;max-width:900px;}
.banner__sub{margin-top:18px;font-size:17px;line-height:1.9;color:var(--ink-2);max-width:820px;}
.banner__meta{display:flex;flex-wrap:wrap;gap:0;margin-top:26px;}
.banner__meta span{font-size:13px;color:var(--muted);padding:0 16px;border-left:1px solid var(--line);}
.banner__meta span:first-child{padding-left:0;border-left:none;}
.banner__figure{margin-top:34px;position:relative;border-radius:var(--radius-img);overflow:hidden;box-shadow:var(--shadow-1);}
.banner__figure img{width:100%;aspect-ratio:21/9;object-fit:cover;}
.banner__figure::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(11,42,34,.10),rgba(11,42,34,0) 65%);}

/* ---------- 分栏问答 ---------- */
.qa-list{border-top:1px solid var(--line);}
.qa-row{padding:30px 0;border-bottom:1px solid var(--line);transition:background-color .22s var(--ease);}
.qa-row:hover{background:#FBF9F4;}
.qa-row__q{font-size:18px;font-weight:600;line-height:1.55;color:var(--brand-900);padding-right:24px;}
.qa-row__tag{display:inline-block;margin-top:10px;font-size:12px;letter-spacing:.06em;color:var(--accent-600);background:var(--accent-50);border-radius:6px;padding:4px 10px;}
.qa-row__a{font-size:15px;line-height:1.9;color:var(--ink-2);}
.qa-row__a + .qa-row__a{margin-top:12px;}
.qa-row__lk{list-style:none;margin-top:12px;}
.qa-row__lk li{position:relative;font-size:15px;line-height:1.9;color:var(--ink-2);padding-left:18px;}
.qa-row__lk li::before{content:"";position:absolute;left:0;top:.85em;width:6px;height:6px;border-radius:2px;background:var(--accent);}

/* ---------- 对照表 ---------- */
.table-wrap{margin-top:8px;overflow-x:auto;border-radius:var(--radius-img);border:1px solid var(--line);background:var(--card);}
.cmp-table{width:100%;border-collapse:collapse;min-width:620px;}
.cmp-table caption{text-align:left;padding:20px 22px 4px;font-size:13px;letter-spacing:.06em;color:var(--muted);}
.cmp-table th{background:#FBF9F4;text-align:left;font-size:15px;font-weight:600;color:var(--brand-900);padding:16px 22px;border-bottom:1px solid var(--line);white-space:nowrap;}
.cmp-table td{padding:16px 22px;font-size:15px;line-height:1.8;color:var(--ink-2);border-bottom:1px solid var(--line);vertical-align:top;}
.cmp-table td:first-child{color:var(--brand-700);font-weight:600;width:32%;}
.cmp-table tbody tr:nth-child(even){background:#FBF9F4;}
.cmp-table tbody tr:last-child td{border-bottom:none;}

/* ---------- 图文区块 ---------- */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center;}
.split--rev .split__media{order:2;}
.split__media{border-radius:var(--radius-img);overflow:hidden;box-shadow:var(--shadow-2);}
.split__media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.split__body p{margin-top:16px;font-size:16px;line-height:1.9;color:var(--ink-2);}
.checklist{margin-top:24px;border-top:1px solid var(--line);}
.checklist li{position:relative;padding:14px 0 14px 30px;border-bottom:1px solid var(--line);font-size:15px;line-height:1.8;color:var(--ink-2);}
.checklist li strong{color:var(--brand-900);font-weight:600;}
.checklist li::before{content:"";position:absolute;left:2px;top:20px;width:10px;height:10px;border:2px solid var(--accent);border-radius:3px;}

/* ---------- 提示条 ---------- */
.notice{display:flex;gap:16px;align-items:flex-start;background:var(--brand-100);border-radius:var(--radius-card);padding:24px 26px;margin-top:34px;}
.notice__mark{flex-shrink:0;width:36px;height:36px;border-radius:10px;background:var(--brand-900);color:#fff;font-size:14px;font-weight:700;display:flex;align-items:center;justify-content:center;}
.notice p{font-size:15px;line-height:1.85;color:var(--brand-700);}
.notice strong{display:block;font-size:16px;color:var(--brand-900);margin-bottom:6px;}

/* ---------- 表单 / CTA ---------- */
.cta{background:var(--accent-50);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.cta__grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start;}
.cta__body p{margin-top:18px;font-size:16px;line-height:1.9;color:var(--ink-2);max-width:520px;}
.cta__points{margin-top:26px;}
.cta__points li{position:relative;padding:8px 0 8px 22px;font-size:15px;color:var(--brand-700);}
.cta__points li::before{content:"";position:absolute;left:0;top:16px;width:8px;height:2px;background:var(--accent);}
.form-card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:34px;box-shadow:var(--shadow-2);}
.form-row{margin-bottom:18px;}
.form-row label{display:block;font-size:13px;font-weight:600;color:var(--brand-900);margin-bottom:8px;letter-spacing:.02em;}
.form-row input,.form-row select,.form-row textarea{width:100%;height:48px;border:1px solid var(--line);border-radius:10px;background:#fff;padding:0 14px;font-size:15px;color:var(--ink);transition:border-color .2s var(--ease),box-shadow .2s var(--ease);}
.form-row textarea{height:110px;padding:12px 14px;line-height:1.7;resize:vertical;}
.form-row select{appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%236C7772' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;background-size:12px 8px;padding-right:38px;}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px rgba(238,106,46,.16);}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.privacy{font-size:12px;line-height:1.8;color:var(--muted);margin-top:14px;}
.privacy a{color:var(--brand-500);text-decoration:underline;}
.privacy a:hover{color:var(--accent-600);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:#B9CFC6;padding:76px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;}
.footer-brand__mark{font-size:20px;font-weight:800;color:#fff;letter-spacing:.02em;}
.footer-brand__sub{font-size:12px;letter-spacing:.18em;color:#8FAEA3;margin:8px 0 16px;}
.footer-brand p{font-size:14px;line-height:1.85;color:#A9C3B9;}
.footer-col h3{font-size:14px;font-weight:600;letter-spacing:.08em;color:#fff;margin-bottom:16px;}
.footer-col a{display:block;font-size:14px;color:#B9CFC6;padding:7px 0;border-bottom:1px solid transparent;}
.footer-col a:hover{color:var(--accent);border-bottom-color:rgba(238,106,46,.45);}
.footer-contact li{position:relative;font-size:14px;line-height:1.7;color:#B9CFC6;padding:7px 0 7px 14px;}
.footer-contact li::before{content:"";position:absolute;left:0;top:15px;width:2px;height:14px;background:var(--accent);}
.footer-contact span{color:#fff;margin-right:8px;font-weight:500;}
.footer-bottom{margin-top:50px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;color:#8FAEA3;}

/* ---------- 返回入口 ---------- */
.back-link{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--brand-700);}
.back-link:hover{color:var(--accent-600);}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .section{padding:72px 0;}
  .nav__toggle{display:flex;}
  .nav__menu{position:fixed;inset:0;z-index:60;background:var(--paper);flex-direction:column;align-items:stretch;gap:0;padding:104px 28px 40px;overflow-y:auto;transform:translateX(100%);transition:transform .3s var(--ease);}
  .nav__menu.is-open{transform:translateX(0);}
  .nav__item{border-bottom:1px solid var(--line);}
  .nav__link{display:block;font-size:20px;padding:18px 0;}
  .nav__link::after{display:none;}
  .nav__item.is-active .nav__link::before{display:none;}
  .nav__item.is-active .nav__link{color:var(--accent-600);}
  .split{grid-template-columns:1fr;gap:32px;}
  .split--rev .split__media{order:0;}
  .cta__grid{grid-template-columns:1fr;gap:34px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .banner__figure img{aspect-ratio:16/9;}
}
@media (max-width:640px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .section{padding:52px 0;}
  .section--tight{padding:44px 0;}
  .topbar__inner{height:auto;padding:8px 20px;font-size:12px;flex-direction:column;align-items:flex-start;gap:4px;}
  .nav{height:68px;padding:0 20px;}
  .brand__mark{font-size:17px;}
  .brand__sub{font-size:10px;}
  .nav__right .btn{display:none;}
  .banner{padding:36px 0 0;}
  .banner__figure img{aspect-ratio:16/10;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:32px;}
  .qa-row{padding:22px 0;}
  .qa-row__q{padding-right:0;font-size:17px;}
  .form-card{padding:24px;}
  .grid-2{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .notice{flex-direction:column;gap:12px;padding:20px;}
}

/* roulang page: category4 */
:root{
  --brand-900:#0B2A22;
  --brand-700:#123B30;
  --brand-500:#1F5C49;
  --brand-100:#DCE9E3;
  --accent:#EE6A2E;
  --accent-600:#D2551D;
  --accent-50:#FDEDE4;
  --paper:#F6F4EE;
  --card:#FFFFFF;
  --ink:#14201C;
  --ink-2:#2A3330;
  --muted:#6C7772;
  --line:#E4E1D8;
  --radius-card:16px;
  --radius-img:18px;
  --radius-btn:10px;
  --shadow-1:0 1px 0 rgba(11,42,34,.04);
  --shadow-2:0 14px 30px rgba(11,42,34,.10);
  --shadow-3:0 30px 80px rgba(11,42,34,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand-500);text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease)}
a:hover{color:var(--accent-600)}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:3px solid rgba(238,106,46,.35);outline-offset:2px;border-radius:4px}

.container{max-width:1220px;margin:0 auto;padding:0 24px;width:100%}
.section{padding:92px 0}
.section--tight{padding:64px 0}
.section--paper{background:var(--paper)}
.section--white{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--brand-500);font-weight:600;
}
.eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent);display:inline-block}

.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:44px}
.section-head h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3;font-weight:700;color:var(--brand-700);margin-top:10px}
.section-note{max-width:420px;color:var(--muted);font-size:15px;line-height:1.8}

/* ---------- topbar ---------- */
.topbar{background:var(--paper);border-bottom:1px solid var(--line);font-size:13px;color:var(--muted)}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px;flex-wrap:wrap}
.topbar__links{display:flex;gap:20px}
.topbar__links a{color:var(--muted)}
.topbar__links a:hover{color:var(--accent-600)}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,238,.94);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:76px}
.brand{display:flex;flex-direction:column;gap:2px;color:var(--brand-700)}
.brand:hover{color:var(--brand-700)}
.brand__mark{font-size:21px;font-weight:800;letter-spacing:.01em;line-height:1.2;font-variant-numeric:tabular-nums}
.brand__mark span{color:var(--accent-600);font-weight:700;margin-left:2px}
.brand__sub{font-size:11px;letter-spacing:.18em;color:var(--muted);font-weight:500}
.nav__menu{display:flex;align-items:center;gap:30px;margin:0}
.nav__item{position:relative}
.nav__link{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;font-weight:500;color:var(--ink);letter-spacing:.01em;
}
.nav__link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--accent);
  transition:width .22s var(--ease);
}
.nav__link:hover{color:var(--brand-700)}
.nav__link:hover::after{width:100%}
.nav__item.is-active .nav__link{color:var(--brand-900);font-weight:600}
.nav__item.is-active .nav__link::before{
  content:"";position:absolute;left:50%;top:-9px;transform:translateX(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--accent);
}
.nav__item.is-active .nav__link::after{width:100%}
.nav__right{display:flex;align-items:center;gap:14px}
.nav__toggle{display:none;width:42px;height:42px;position:relative;border:1px solid var(--line);border-radius:10px;background:#fff}
.nav__toggle span{position:absolute;left:11px;width:20px;height:1.5px;background:var(--brand-700);transition:transform .22s var(--ease),opacity .2s var(--ease)}
.nav__toggle span:nth-child(1){top:16px}
.nav__toggle span:nth-child(2){top:24px}
.nav__toggle.is-open span:nth-child(1){transform:translateY(4px) rotate(45deg)}
.nav__toggle.is-open span:nth-child(2){transform:translateY(-4px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;line-height:1;
  border:1px solid transparent;transition:transform .22s var(--ease),background .22s var(--ease),box-shadow .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.btn--primary{background:var(--accent);color:#fff;box-shadow:0 10px 22px rgba(238,106,46,.22)}
.btn--primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-2px);box-shadow:0 16px 30px rgba(238,106,46,.28)}
.btn--ghost{background:transparent;border-color:var(--brand-500);color:var(--brand-700)}
.btn--ghost:hover{background:var(--accent-50);border-color:var(--brand-500);color:var(--brand-700);transform:translateY(-2px)}
.btn--sm{padding:10px 18px;font-size:14px}
.btn--block{width:100%}
.arrow{display:inline-block;transition:transform .22s var(--ease)}
.btn:hover .arrow,.link-more:hover .arrow{transform:translateX(4px)}

.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-500)}
.link-more:hover{color:var(--accent-600)}

/* ---------- breadcrumb ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);padding:26px 0 0}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--accent-600)}
.breadcrumb .is-current{color:var(--brand-700);font-weight:600}

/* ---------- page head ---------- */
.page-head{padding-bottom:20px}
.page-head__copy{padding-top:34px;max-width:860px}
.page-head h1{
  font-size:clamp(32px,4.6vw,52px);line-height:1.22;font-weight:700;letter-spacing:-.01em;
  color:var(--brand-900);margin:16px 0 18px;
}
.page-head .lead{font-size:17px;line-height:1.9;color:var(--ink-2);max-width:720px}
.head-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.head-marks{display:flex;flex-wrap:wrap;gap:16px;margin-top:26px;font-size:13px;color:var(--muted)}
.head-marks span{display:inline-flex;align-items:center;gap:16px}
.head-marks span::before{content:"";width:1px;height:14px;background:var(--line);display:inline-block}
.head-marks span:first-child::before{display:none}

.banner{margin-top:44px;border-radius:16px;overflow:hidden;position:relative;background:var(--brand-100)}
.banner img{width:100%;aspect-ratio:21/9;object-fit:cover;border-radius:16px}

/* ---------- services media grid ---------- */
.media-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px 40px}
.media-col{display:flex;flex-direction:column;gap:56px}
.media-col--offset{margin-top:72px}
.media-item{display:flex;flex-direction:column;gap:18px}
.media-item img{
  width:100%;object-fit:cover;border-radius:var(--radius-img);
  box-shadow:var(--shadow-1);transition:transform .35s var(--ease),box-shadow .35s var(--ease);
}
.media-item--wide img{aspect-ratio:4/3}
.media-item--tall img{aspect-ratio:3/4}
.media-item:hover img{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.media-item h3{font-size:21px;font-weight:600;color:var(--brand-700);line-height:1.42}
.media-item p{font-size:15px;color:var(--muted);line-height:1.85;max-width:460px}
.media-item .tag{
  align-self:flex-start;font-size:12px;letter-spacing:.06em;padding:4px 10px;border-radius:6px;
  background:var(--accent-50);color:var(--accent-600);font-weight:600;
}

/* ---------- process ---------- */
.process{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
.process__item{padding:34px 26px 34px 0;border-right:1px solid var(--line);position:relative}
.process__item:last-child{border-right:0;padding-right:0}
.process__num{
  font-size:44px;font-weight:800;line-height:1;color:var(--brand-100);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;display:block;margin-bottom:14px;
}
.process__item h3{font-size:19px;font-weight:600;color:var(--brand-700);margin-bottom:10px}
.process__item p{font-size:15px;color:var(--muted);line-height:1.8;padding-right:8px}

/* ---------- data strip ---------- */
.strip{background:var(--brand-900);color:#fff;padding:70px 0;
  background-image:radial-gradient(rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:18px 18px;}
.strip__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.strip__cell{padding:0 26px;border-right:1px solid rgba(255,255,255,.16)}
.strip__cell:first-child{padding-left:0}
.strip__cell:last-child{border-right:0;padding-right:0}
.strip__num{display:block;font-size:clamp(40px,5vw,52px);font-weight:800;line-height:1.05;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.strip__num em{font-style:normal;font-size:.45em;font-weight:600;margin-left:4px;color:rgba(255,255,255,.72)}
.strip__label{display:block;margin-top:12px;font-size:13px;letter-spacing:.06em;color:rgba(220,233,227,.78);line-height:1.7}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--line)}
.faq__item{border-bottom:1px solid var(--line)}
.faq__item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:24px 0;position:relative;transition:background .2s var(--ease);
}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--accent);
  transform:scaleY(0);transform-origin:center;transition:transform .2s var(--ease);
}
.faq__item summary:hover{background:#FBF9F4}
.faq__q{font-size:17px;font-weight:600;color:var(--brand-700);line-height:1.6;padding-left:20px}
.faq__icon{position:relative;width:14px;height:14px;flex:none;margin-right:6px}
.faq__icon::before,.faq__icon::after{content:"";position:absolute;background:var(--accent-600);border-radius:2px}
.faq__icon::before{left:0;top:6px;width:14px;height:2px}
.faq__icon::after{top:0;left:6px;width:2px;height:14px;transition:transform .2s var(--ease)}
.faq__item[open] summary::before{transform:scaleY(1)}
.faq__item[open] .faq__icon::after{transform:scaleY(0)}
.faq__a{padding:0 60px 26px 20px;font-size:15px;line-height:1.9;color:var(--ink-2);max-width:900px}

/* ---------- cta + form ---------- */
.cta{background:var(--accent-50);border:1px solid #F6D9C8;border-radius:20px;padding:48px 44px}
.cta__grid{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.cta h2{font-size:clamp(24px,2.6vw,32px);line-height:1.32;font-weight:700;color:var(--brand-700)}
.cta p{margin-top:16px;font-size:15px;color:var(--ink-2);line-height:1.85;max-width:460px}
.cta__list{margin-top:24px;display:flex;flex-direction:column;gap:12px}
.cta__list li{display:flex;gap:12px;font-size:15px;color:var(--ink-2)}
.cta__list li::before{content:"";width:2px;height:16px;background:var(--accent);flex:none;margin-top:5px}
.form-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:30px;box-shadow:var(--shadow-1)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--brand-700);margin-bottom:8px;letter-spacing:.02em}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:10px;background:#fff;
  font-size:15px;color:var(--ink);transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:110px;padding:12px 14px;resize:vertical;line-height:1.7}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--brand-500) 50%),linear-gradient(135deg,var(--brand-500) 50%,transparent 50%);
  background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--accent);box-shadow:0 0 0 4px rgba(238,106,46,.14);
}
.privacy{margin-top:14px;font-size:12px;color:var(--muted);line-height:1.7}
.privacy a{color:var(--brand-500);text-decoration:underline}
.form-hint{font-size:12px;color:var(--muted);margin-top:10px}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:#DCE9E3;padding:76px 0 30px;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.14)}
.footer-brand__mark{font-size:20px;font-weight:800;color:#fff;letter-spacing:.01em}
.footer-brand__sub{font-size:11px;letter-spacing:.18em;color:rgba(220,233,227,.7);margin:6px 0 16px}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(220,233,227,.78);max-width:340px}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;letter-spacing:.06em;margin-bottom:18px}
.footer-col a{display:block;font-size:14px;color:rgba(220,233,227,.82);padding:7px 0;border-bottom:1px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease)}
.footer-col a:hover{color:var(--accent);border-bottom-color:rgba(238,106,46,.55)}
.footer-contact li{font-size:14px;color:rgba(220,233,227,.82);padding:7px 0;display:flex;gap:10px;line-height:1.7}
.footer-contact li::before{content:"";width:2px;height:15px;background:var(--accent);flex:none;margin-top:5px}
.footer-contact span{color:rgba(220,233,227,.6);min-width:64px}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;padding-top:24px;font-size:13px;color:rgba(220,233,227,.6)}

/* ---------- responsive ---------- */
@media screen and (max-width:1024px){
  .section{padding:72px 0}
  .section--tight{padding:52px 0}
  .nav__menu{display:none}
  .nav__toggle{display:block}
  .nav__menu.is-open{
    display:flex;flex-direction:column;align-items:flex-start;gap:0;
    position:fixed;left:0;right:0;top:114px;bottom:0;z-index:70;
    background:var(--paper);padding:12px 24px 40px;overflow-y:auto;
  }
  .nav__menu.is-open .nav__item{width:100%;border-bottom:1px solid var(--line)}
  .nav__menu.is-open .nav__link{display:block;padding:18px 0;font-size:20px;font-weight:500}
  .nav__menu.is-open .nav__link::after{display:none}
  .nav__item.is-active .nav__link::before{top:50%;left:auto;right:4px;transform:translateY(-50%)}
  .media-grid{gap:44px 32px}
  .media-col--offset{margin-top:48px}
  .process{grid-template-columns:repeat(2,1fr)}
  .process__item{padding:30px 24px 30px 0}
  .process__item:nth-child(2){border-right:0}
  .process__item:nth-child(3){border-top:1px solid var(--line)}
  .process__item:nth-child(4){border-top:1px solid var(--line);border-right:0}
  .strip__grid{grid-template-columns:repeat(2,1fr);gap:32px 0}
  .strip__cell:nth-child(2){border-right:0}
  .strip__cell:nth-child(3){padding-left:0}
  .cta__grid{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media screen and (max-width:640px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:52px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px}
  .topbar__inner{min-height:auto;padding:8px 0;justify-content:flex-start}
  .topbar__links{gap:14px;flex-wrap:wrap}
  .nav{min-height:66px}
  .brand__mark{font-size:19px}
  .nav__right .btn{display:none}
  .nav__menu.is-open{top:104px}
  .page-head h1{font-size:clamp(28px,8vw,36px)}
  .head-actions .btn{width:100%}
  .banner{margin-top:30px}
  .banner img{aspect-ratio:16/10}
  .media-grid{grid-template-columns:1fr;gap:36px}
  .media-col{gap:36px}
  .media-col--offset{margin-top:0}
  .media-item--tall img{aspect-ratio:4/3}
  .process{grid-template-columns:1fr}
  .process__item{border-right:0;border-top:1px solid var(--line);padding:26px 0}
  .process__item:first-child{border-top:0}
  .strip__grid{grid-template-columns:repeat(2,1fr);gap:28px 16px}
  .strip__cell{padding:0 16px}
  .strip__cell:nth-child(odd){padding-left:0}
  .faq__a{padding:0 0 24px 20px}
  .cta{padding:32px 22px}
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}