/* roulang page: index */
:root{
  --brand-900:#062B24;
  --brand-700:#0E5C4A;
  --brand-500:#12A177;
  --brand-lime:#CCF24E;
  --accent:#FF6A2B;
  --accent-2:#FFB020;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --surface-2:#F1EEE6;
  --ink:#14201D;
  --muted:#5C6B66;
  --line:#E4E1D8;
  --r-xl:28px;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:14px;
  --shadow-card:0 1px 2px rgba(20,32,29,.04), 0 12px 32px -12px rgba(20,32,29,.12);
  --shadow-hover:0 18px 40px -14px rgba(20,32,29,.20);
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:140px;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:8px}
.wrap{width:100%;max-width:1280px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.wrap{padding:0 28px}}
@media(min-width:1024px){.wrap{padding:0 40px}}

/* 通用文本 */
.sec-head{margin-bottom:34px}
.sec-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--brand-700);letter-spacing:.04em}
.sec-eyebrow::before{content:"";width:22px;height:3px;border-radius:2px;background:linear-gradient(120deg,var(--brand-500),var(--brand-lime))}
.sec-title{font-size:28px;font-weight:700;line-height:1.32;letter-spacing:-.01em;margin:12px 0 0}
@media(min-width:1024px){.sec-title{font-size:34px}}
.sec-desc{margin:14px 0 0;color:var(--muted);max-width:780px;font-size:16px}
.muted{color:var(--muted)}
.small{font-size:13.5px}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 26px;border-radius:999px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),filter .22s var(--ease)}
.btn-primary{background:linear-gradient(120deg,var(--accent),var(--accent-2));color:#fff;box-shadow:0 12px 26px -14px rgba(255,106,43,.95)}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.05);box-shadow:0 16px 30px -14px rgba(255,106,43,1)}
.btn-primary:active{transform:translateY(1px)}
.btn-line{background:var(--surface);border-color:var(--line);color:var(--brand-700)}
.btn-line:hover{border-color:var(--brand-500);transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:rgba(204,242,78,.55);color:var(--brand-lime)}
.btn-ghost:hover{background:rgba(204,242,78,.12)}
.btn-sm{min-height:44px;padding:0 20px;font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand-700);transition:color .2s var(--ease)}
.link-arrow svg{transition:transform .22s var(--ease)}
.link-arrow:hover{color:var(--brand-500)}
.link-arrow:hover svg{transform:translateX(3px)}

/* 标签、徽章 */
.chip{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:14px;background:rgba(18,161,119,.08);color:var(--brand-700);font-size:13px;font-weight:600;line-height:1.7;transition:background .2s var(--ease)}
.chip:hover{background:rgba(18,161,119,.16)}
.tag-outline{display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;border:1px solid var(--line);font-size:13px;color:var(--muted);background:var(--surface)}

/* 卡片 */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-card);transition:transform .24s var(--ease),box-shadow .24s var(--ease)}
.card-hover:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.card-xl{border-radius:var(--r-xl)}
.icon-box{width:48px;height:48px;border-radius:14px;background:rgba(18,161,119,.1);display:grid;place-items:center;color:var(--brand-700);flex:none}
.icon-box svg{width:24px;height:24px}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:60;background:rgba(247,245,240,.97);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--line);transition:box-shadow .25s var(--ease),background .25s var(--ease)}
.site-header.is-stuck{background:rgba(255,255,255,.92);box-shadow:0 10px 28px -22px rgba(20,32,29,.55)}
.header-top{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:72px;transition:min-height .25s var(--ease)}
.site-header.is-stuck .header-top{min-height:58px}
.brand{display:flex;align-items:center;gap:12px;min-height:44px}
.brand-mark{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(120deg,var(--brand-500),var(--brand-lime));color:var(--brand-900);font-weight:800;font-size:19px;letter-spacing:-.02em;box-shadow:0 10px 20px -12px rgba(18,161,119,.9)}
.brand-text strong{display:block;font-size:17px;font-weight:800;line-height:1.25;letter-spacing:-.01em}
.brand-text em{display:block;font-style:normal;font-size:12px;color:var(--muted);line-height:1.6}
.header-actions{display:flex;align-items:center;gap:12px}
.hotline{font-size:13px;color:var(--muted);white-space:nowrap}
.header-nav{border-top:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;gap:18px;min-height:52px;transition:min-height .25s var(--ease)}
.site-header.is-stuck .nav-inner{min-height:46px}
.channels{display:flex;align-items:center;gap:4px;overflow-x:auto;scrollbar-width:none}
.channels::-webkit-scrollbar{display:none}
.channel{position:relative;display:inline-flex;align-items:center;height:44px;padding:0 14px;font-size:15px;font-weight:600;color:var(--muted);border-radius:12px;white-space:nowrap;transition:color .2s var(--ease),background .2s var(--ease)}
.channel:hover{color:var(--brand-700);background:rgba(18,161,119,.07)}
.channel.is-active{color:var(--brand-700);background:rgba(18,161,119,.08)}
.channel.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:0;height:3px;border-radius:3px 3px 0 0;background:var(--brand-lime)}
.trends{display:flex;align-items:center;gap:8px;margin-left:auto;overflow:hidden;transition:opacity .25s var(--ease)}
.trends.is-hidden{opacity:0;pointer-events:none}
.trend-label{font-size:12px;color:var(--muted);white-space:nowrap}
.trend{display:inline-flex;align-items:center;height:30px;padding:0 12px;border-radius:12px;font-size:13px;color:var(--brand-700);background:rgba(18,161,119,.08);white-space:nowrap;transition:background .2s var(--ease)}
.trend:hover{background:rgba(18,161,119,.18)}
.icon-btn{width:44px;height:44px;border-radius:14px;border:1px solid var(--line);display:grid;place-items:center;color:var(--brand-700);background:var(--surface);transition:border-color .2s var(--ease),color .2s var(--ease)}
.icon-btn:hover{border-color:var(--brand-500)}
.icon-btn svg{width:20px;height:20px}
.burger{display:none}
@media(max-width:1023px){
  .header-nav{display:none}
  .hotline{display:none}
  .burger{display:grid}
}
.search-panel{position:absolute;left:0;right:0;top:100%;background:var(--surface);border-bottom:1px solid var(--line);box-shadow:0 26px 44px -30px rgba(20,32,29,.55);display:none}
.search-panel.is-open{display:block}
.search-row{display:flex;gap:12px;align-items:center;padding:20px 0 8px}
.search-input{flex:1;min-height:50px;padding:0 18px;border-radius:14px;border:1px solid var(--line);background:var(--surface-2);transition:border-color .2s,background .2s,box-shadow .2s}
.search-input:focus{background:var(--surface);border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(18,161,119,.12);outline:none}
.search-hot{display:flex;flex-wrap:wrap;gap:10px;padding:6px 0 20px}

/* 移动端抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(6,43,36,.45);opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s;z-index:70}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;bottom:0;width:82%;max-width:360px;background:var(--surface);z-index:80;transform:translateX(103%);transition:transform .3s var(--ease);overflow-y:auto;padding:20px 20px 40px;box-shadow:-24px 0 48px -34px rgba(20,32,29,.7)}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-group{margin-top:22px}
.drawer-group h3{font-size:12.5px;font-weight:700;color:var(--muted);letter-spacing:.08em;margin:0 0 10px}
.drawer-link{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:48px;padding:0 14px;border-radius:14px;font-size:15px;font-weight:600;color:var(--ink);background:var(--surface-2);margin-bottom:8px;transition:background .2s var(--ease),color .2s var(--ease)}
.drawer-link:hover,.drawer-link.is-active{background:rgba(18,161,119,.12);color:var(--brand-700)}

/* Hero */
.hero{position:relative;overflow:hidden;padding:56px 0 60px}
.hero-glow{position:absolute;top:-180px;right:-140px;width:660px;height:660px;border-radius:50%;background:radial-gradient(circle at 35% 35%,rgba(204,242,78,.40),rgba(18,161,119,.16) 46%,rgba(18,161,119,0) 72%);pointer-events:none}
.hero-arc{position:absolute;left:-140px;bottom:-240px;width:560px;height:560px;border-radius:50%;border:1px solid rgba(18,161,119,.16);pointer-events:none}
.hero-dots{position:absolute;top:96px;left:-10px;width:150px;height:110px;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(18,161,119,.28) 1.6px,transparent 1.6px);
  background-size:16px 16px}
.hero-grid{position:relative;display:grid;gap:44px;align-items:center}
@media(min-width:1024px){.hero-grid{grid-template-columns:1.05fr .95fr;gap:56px}}
.hero-title{font-size:31px;line-height:1.24;font-weight:800;letter-spacing:-.02em;margin:20px 0 0}
@media(min-width:768px){.hero-title{font-size:42px}}
@media(min-width:1280px){.hero-title{font-size:52px}}
.hero-sub{margin:18px 0 0;font-size:17px;color:var(--muted);max-width:580px}
.hero-tag{display:inline-flex;align-items:center;gap:9px;padding:8px 16px;border-radius:999px;background:var(--surface);border:1px solid var(--line);font-size:13px;font-weight:600;color:var(--brand-700)}
.hero-tag::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--brand-lime)}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:28px;font-size:14.5px;color:var(--muted)}
.hero-points li{display:flex;align-items:center;gap:8px}
.hero-points li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-500);flex:none}
.hero-media{position:relative}
.hero-media::before{content:"";position:absolute;right:-16px;bottom:-16px;width:150px;height:150px;border-radius:30px;background:var(--brand-lime);opacity:.85}
.hero-media img{position:relative;z-index:1;width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-xl);border:1px solid var(--line)}
.hero-media-badge{position:absolute;z-index:2;left:18px;bottom:18px;display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:999px;background:rgba(6,43,36,.86);color:#EAF3EF;font-size:13px;font-weight:600;backdrop-filter:blur(4px)}
.hero-media-badge::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--brand-lime)}

/* 数据徽章 */
.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:-6px}
@media(min-width:1024px){.stats-grid{grid-template-columns:repeat(4,1fr);gap:20px}}
.stat{background:var(--brand-lime);color:var(--brand-900);border-radius:18px;padding:20px 22px;transition:transform .24s var(--ease)}
.stat:hover{transform:translateY(-3px)}
.stat-num{font-size:28px;font-weight:800;line-height:1.1;letter-spacing:-.02em;font-family:Inter,"PingFang SC",system-ui,sans-serif}
.stat-num small{font-size:14px;font-weight:700;margin-left:3px}
.stat-label{font-size:13px;font-weight:600;margin-top:6px;color:#0B3B31;line-height:1.6}

/* 板块 */
.section{padding:60px 0}
@media(min-width:1024px){.section{padding:88px 0}}
.section-alt{background:var(--surface)}
.section-deep{background:var(--brand-900);color:#EAF3EF;position:relative;overflow:hidden}
.section-deep .sec-title,.section-deep .sec-head h2{color:#fff}
.section-deep .sec-eyebrow{color:var(--brand-lime)}
.section-deep .sec-desc{color:rgba(234,243,239,.75)}

/* 痛点 */
.pain-card{padding:28px;display:flex;flex-direction:column;gap:14px}
.pain-card h3{margin:0;font-size:19px;font-weight:700;line-height:1.45}
.pain-card p{margin:0;color:var(--muted);font-size:15px}
.pain-xl{padding:34px}
@media(min-width:1024px){.pain-xl{padding:40px}}
.pain-xl h3{font-size:23px}

/* 方案图文 */
.solution{display:grid;gap:26px;align-items:center;padding:26px 0}
@media(min-width:1024px){.solution{grid-template-columns:1fr 1fr;gap:56px;padding:36px 0}}
.solution-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-xl);border:1px solid var(--line)}
.solution h3{margin:0;font-size:22px;font-weight:700;line-height:1.4}
.solution p{margin:12px 0 0;color:var(--muted)}
.point-list{margin-top:18px;display:grid;gap:10px}
.point-list li{position:relative;padding-left:22px;font-size:15.5px}
.point-list li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;background:var(--brand-lime)}
@media(min-width:1024px){
  .solution:nth-child(even) .solution-media{order:2}
}

/* 成果深色区 */
.result-card{background:rgba(255,255,255,.05);border:1px solid rgba(204,242,78,.22);border-radius:var(--r-lg);padding:26px}
.result-card h3{margin:0 0 10px;font-size:19px;font-weight:700;color:#fff}
.result-card p{margin:0;color:rgba(234,243,239,.76);font-size:15px}
.result-stat{border:1px solid rgba(204,242,78,.28);border-radius:18px;padding:18px 22px;background:rgba(204,242,78,.06)}
.result-stat .stat-num{color:var(--brand-lime)}
.result-stat .stat-label{color:rgba(234,243,239,.72)}
.result-note{margin-top:22px;font-size:14px;color:rgba(234,243,239,.66)}

/* 品类入口 */
.cat-main{position:relative;overflow:hidden;border-radius:var(--r-xl);border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow-card);transition:transform .24s var(--ease),box-shadow .24s var(--ease);display:block}
.cat-main:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.cat-main img{width:100%;aspect-ratio:16/10;object-fit:cover}
.cat-main .cat-body{padding:24px}
.cat-main h3{margin:12px 0 0;font-size:21px;font-weight:700}
.cat-main p{margin:10px 0 16px;color:var(--muted);font-size:15px}
.cat-row{display:flex;align-items:center;gap:16px;padding:14px;border-radius:var(--r-md);border:1px solid var(--line);background:var(--surface);transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease)}
.cat-row:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(18,161,119,.4)}
.cat-row img{width:96px;height:72px;object-fit:cover;border-radius:14px;flex:none}
.cat-row h4{margin:0;font-size:16.5px;font-weight:700;line-height:1.5}
.cat-row p{margin:4px 0 0;font-size:13.5px;color:var(--muted);line-height:1.7}
.cat-row .arrow{flex:none;color:var(--brand-500);display:grid;place-items:center;width:36px;height:36px}

/* 资讯卡 */
.post-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-card);transition:transform .24s var(--ease),box-shadow .24s var(--ease)}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.post-card__media{display:block;overflow:hidden;background:var(--surface-2)}
.post-card__media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s var(--ease)}
.post-card:hover .post-card__media img{transform:scale(1.04)}
.post-card__body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1}
.post-card__title{margin:0;font-size:18px;font-weight:700;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card__title a:hover{color:var(--brand-500)}
.post-card__desc{margin:0;color:var(--muted);font-size:14.5px;line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card__foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:12px;border-top:1px solid var(--line)}
.post-date{font-size:13px;color:var(--muted)}
.empty-state{border:1px dashed var(--line);border-radius:var(--r-xl);background:var(--surface);padding:56px 24px;text-align:center}
.empty-icon{width:56px;height:56px;border-radius:50%;background:var(--surface-2);display:grid;place-items:center;margin:0 auto 14px;color:var(--brand-700)}
.empty-state p{margin:0;font-size:15px;color:var(--muted)}

/* 证言 */
.quote-card{position:relative;padding:30px;border-radius:var(--r-xl)}
.quote-card::before{content:"”";position:absolute;top:6px;right:24px;font-size:74px;line-height:1;color:rgba(18,161,119,.16);font-family:Georgia,serif}
.quote-card blockquote{margin:0;font-size:16px;line-height:1.9;color:var(--ink)}
.quote-foot{display:flex;align-items:center;gap:12px;margin-top:20px}
.avatar{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(120deg,var(--brand-500),var(--brand-lime));color:var(--brand-900);font-weight:800;flex:none}
.quote-meta{font-size:13.5px;color:var(--muted)}
@media(min-width:1024px){.quote-lift{transform:translateY(18px)}}

/* FAQ */
.faq{max-width:880px;margin:0 auto;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:16px;min-height:60px;padding:18px 16px;text-align:left;font-size:17px;font-weight:600;line-height:1.6;transition:background .2s var(--ease)}
.faq-q:hover{background:var(--surface-2)}
.faq-item.is-open .faq-q{background:var(--surface-2)}
.faq-item.is-open .faq-q::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;background:var(--brand-lime)}
.faq-sign{flex:none;width:28px;height:28px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;color:var(--brand-700);background:var(--surface);transition:transform .26s var(--ease)}
.faq-sign svg{width:14px;height:14px}
.faq-item.is-open .faq-sign{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a-inner{padding:0 16px 22px;color:var(--muted);font-size:15.5px}

/* 表单 */
.contact-grid{display:grid;gap:34px}
@media(min-width:1024px){.contact-grid{grid-template-columns:1fr 1fr;gap:56px;align-items:start}}
.form-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-xl);padding:28px;box-shadow:var(--shadow-card)}
@media(min-width:768px){.form-card{padding:34px}}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;color:var(--muted);margin-bottom:7px}
.input{width:100%;min-height:48px;padding:12px 16px;border-radius:var(--r-sm);border:1px solid var(--line);background:var(--surface-2);transition:border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease)}
.input:focus{background:var(--surface);border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(18,161,119,.12);outline:none}
textarea.input{min-height:124px;resize:vertical;line-height:1.8}
.form-tip{margin-top:14px;font-size:14px;color:var(--brand-700);opacity:0;transition:opacity .25s var(--ease)}
.form-tip.is-show{opacity:1}
.contact-points{margin-top:26px;display:grid;gap:12px}
.contact-points li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--muted)}
.contact-points svg{width:20px;height:20px;color:var(--brand-500);flex:none;margin-top:5px}

/* 页脚 */
.site-footer{background:var(--brand-900);color:rgba(234,243,239,.78);padding:56px 0 0;position:relative;overflow:hidden}
.site-footer::after{content:"";position:absolute;right:-160px;top:-180px;width:460px;height:460px;border-radius:50%;border:1px solid rgba(204,242,78,.16);pointer-events:none}
.footer-grid{position:relative;display:grid;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{box-shadow:none}
.footer-brand strong{color:#fff;font-size:17px;font-weight:800}
.footer-about{font-size:14px;line-height:1.85;color:rgba(234,243,239,.7);max-width:340px}
.footer-title{position:relative;font-size:14px;font-weight:700;color:#fff;margin:0 0 16px;padding-bottom:12px}
.footer-title::after{content:"";position:absolute;left:0;bottom:0;width:28px;height:3px;border-radius:2px;background:var(--brand-lime)}
.footer-links a{display:block;min-height:34px;font-size:14px;color:rgba(234,243,239,.74);transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-links a:hover{color:var(--brand-lime);transform:translateX(2px)}
.footer-info li{font-size:14px;color:rgba(234,243,239,.74);margin-bottom:10px;line-height:1.8}
.footer-info strong{color:#EAF3EF;font-weight:600}
.footer-bottom{position:relative;margin-top:44px;border-top:1px solid rgba(255,255,255,.12);padding:20px 0 26px;display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;font-size:13px;color:rgba(234,243,239,.6)}

@media(prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --brand-900:#062B24;
  --brand-700:#0E5C4A;
  --brand-500:#12A177;
  --brand-lime:#CCF24E;
  --accent:#FF6A2B;
  --accent-2:#FFB020;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --surface-2:#F1EEE6;
  --ink:#14201D;
  --muted:#5C6B66;
  --line:#E4E1D8;
  --radius-lg:28px;
  --radius-md:20px;
  --radius-sm:14px;
  --shadow-sm:0 1px 2px rgba(20,32,29,.04), 0 12px 32px -12px rgba(20,32,29,.12);
  --shadow-lg:0 18px 40px -14px rgba(20,32,29,.20);
  --ease:cubic-bezier(.2,.8,.2,1);
  --wrap:1280px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--ink);}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 40px;width:100%;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(150%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease),background .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 28px -18px rgba(20,32,29,.35);background:rgba(255,255,255,.97);}
.header-top-inner{display:flex;align-items:center;gap:20px;height:72px;transition:height .24s var(--ease);}
.site-header.is-scrolled .header-top-inner{height:56px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(120deg,var(--brand-500),var(--brand-lime));
  color:var(--brand-900);font-weight:800;font-size:19px;letter-spacing:-.02em;
  box-shadow:0 8px 18px -10px rgba(18,161,119,.8);
}
.brand-text{font-size:20px;font-weight:800;letter-spacing:-.02em;color:var(--brand-900);}
.brand-text em{font-style:normal;color:var(--brand-500);}
.header-top-right{display:flex;align-items:center;gap:12px;margin-left:auto;}
.hotline{
  font-size:13px;color:var(--muted);
  padding:7px 14px;border-radius:999px;background:var(--surface-2);
  white-space:nowrap;
}
.icon-btn{
  width:44px;height:44px;border-radius:14px;display:inline-flex;
  align-items:center;justify-content:center;color:var(--brand-700);
  border:1px solid var(--line);background:var(--surface);
  transition:all .22s var(--ease);
}
.icon-btn:hover{border-color:var(--brand-500);color:var(--brand-500);transform:translateY(-1px);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:0 22px;height:46px;border-radius:999px;
  font-size:15px;font-weight:700;white-space:nowrap;
  transition:all .22s var(--ease);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{
  background:linear-gradient(120deg,var(--accent),var(--accent-2));
  color:#fff;box-shadow:0 10px 24px -12px rgba(255,106,43,.9);
}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.04);box-shadow:0 14px 28px -12px rgba(255,106,43,.95);}
.btn-primary:active{transform:translateY(1px);}
.btn-outline{
  background:var(--surface);color:var(--brand-700);border:1px solid var(--line);
}
.btn-outline:hover{border-color:var(--brand-500);color:var(--brand-500);}
.btn-dark{background:var(--brand-900);color:#fff;}
.btn-dark:hover{transform:translateY(-1px);box-shadow:var(--shadow-lg);}
.menu-toggle{display:none;}
.header-bottom{border-top:1px solid var(--line);transition:height .24s var(--ease);}
.header-bottom-inner{display:flex;align-items:center;gap:26px;height:54px;}
.site-header.is-scrolled .header-bottom-inner{height:44px;}
.channels{display:flex;align-items:center;gap:6px;flex-shrink:0;}
.channel{
  position:relative;display:inline-flex;align-items:center;
  padding:8px 15px;border-radius:999px;font-size:15px;font-weight:600;
  color:var(--muted);transition:all .2s var(--ease);
}
.channel:hover{color:var(--brand-700);background:rgba(18,161,119,.07);}
.channel.is-active{color:var(--brand-700);background:rgba(18,161,119,.08);}
.channel.is-active::after{
  content:"";position:absolute;left:15px;right:15px;bottom:2px;height:3px;
  border-radius:3px;background:var(--brand-lime);
}
.trend-chips{display:flex;align-items:center;gap:8px;overflow:hidden;flex:1;}
.trend-chip{
  font-size:13px;color:var(--brand-700);background:rgba(18,161,119,.08);
  padding:6px 12px;border-radius:14px;white-space:nowrap;transition:background .2s var(--ease);
}
.trend-chip:hover{background:rgba(18,161,119,.16);}
.site-header.is-deep .trend-chips{display:none;}

/* 搜索面板 */
.search-panel{
  position:absolute;left:0;right:0;top:100%;
  background:var(--surface);border-bottom:1px solid var(--line);
  box-shadow:0 24px 48px -28px rgba(20,32,29,.4);
  padding:24px 0 28px;display:none;
}
.search-panel.is-open{display:block;}
.search-box{
  display:flex;align-items:center;gap:12px;
  border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:0 18px;height:54px;background:var(--surface-2);
  transition:all .2s var(--ease);
}
.search-box:focus-within{background:#fff;border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(18,161,119,.14);}
.search-box i{color:var(--muted);}
.search-box input{flex:1;border:0;background:transparent;outline:none;height:100%;font-size:16px;}
.search-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;align-items:center;}
.chip-label{font-size:13px;color:var(--muted);}
.chip{
  font-size:13px;color:var(--brand-700);background:rgba(18,161,119,.08);
  padding:7px 14px;border-radius:14px;transition:background .2s var(--ease);
}
.chip:hover{background:rgba(18,161,119,.16);}

/* 移动端抽屉 */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82%;max-width:380px;z-index:120;
  background:var(--surface);transform:translateX(100%);
  transition:transform .28s var(--ease);padding:22px;overflow-y:auto;
  box-shadow:-20px 0 50px -30px rgba(20,32,29,.6);
}
.drawer.is-open{transform:translateX(0);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(6,43,36,.42);z-index:110;
  opacity:0;visibility:hidden;transition:all .28s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-title{font-size:16px;font-weight:700;color:var(--brand-900);}
.drawer-search input{
  width:100%;height:48px;border-radius:var(--radius-sm);border:1px solid var(--line);
  background:var(--surface-2);padding:0 16px;outline:none;
}
.drawer-search input:focus{border-color:var(--brand-500);background:#fff;}
.drawer-group{margin-top:24px;}
.drawer-group h4{font-size:13px;color:var(--muted);font-weight:600;margin-bottom:10px;letter-spacing:.04em;}
.drawer-group a{
  display:block;padding:12px 14px;border-radius:var(--radius-sm);font-size:15px;
  font-weight:600;color:var(--brand-700);transition:background .2s var(--ease);
}
.drawer-group a:hover,.drawer-group a.is-active{background:rgba(18,161,119,.09);}
.drawer .btn{width:100%;margin-top:26px;}

/* ============ 面包屑 ============ */
.crumb-bar{padding:26px 0 0;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);flex-wrap:nowrap;overflow:hidden;}
.breadcrumb a{color:var(--muted);transition:color .2s var(--ease);white-space:nowrap;}
.breadcrumb a:hover{color:var(--brand-500);}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:52%;
  color:var(--ink);font-weight:600;
}

/* ============ 文章头 ============ */
.article-head{padding:22px 0 30px;border-bottom:1px solid var(--line);}
.cat-chip{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  color:var(--brand-700);background:rgba(18,161,119,.09);
  padding:7px 15px;border-radius:14px;
}
.cat-chip::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-500);}
.article-head h1{
  font-size:clamp(28px,4vw,46px);line-height:1.22;font-weight:800;
  letter-spacing:-.02em;color:var(--brand-900);margin:18px 0 16px;max-width:1000px;
}
.meta-row{display:flex;align-items:center;gap:16px;flex-wrap:wrap;font-size:14px;color:var(--muted);}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--line);}
.meta-row .spacer{flex:1;}
.share-group{display:flex;align-items:center;gap:8px;}
.share-btn{
  width:44px;height:44px;border-radius:14px;border:1px solid var(--line);
  background:var(--surface);display:inline-flex;align-items:center;justify-content:center;
  color:var(--brand-700);transition:all .22s var(--ease);
}
.share-btn:hover{border-color:var(--brand-500);color:var(--brand-500);transform:translateY(-2px);box-shadow:var(--shadow-sm);}
.hero-figure{
  margin:28px 0 0;border-radius:24px;overflow:hidden;background:var(--surface-2);
  aspect-ratio:16/9;box-shadow:var(--shadow-sm);
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}

/* ============ 正文布局 ============ */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:56px;
  padding:44px 0 0;align-items:start;
}
.article-body{
  max-width:800px;font-size:17px;line-height:1.9;color:var(--ink);
  min-width:0;
}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  font-size:26px;line-height:1.35;font-weight:700;color:var(--brand-900);
  margin:40px 0 18px;padding-left:14px;border-left:4px solid var(--brand-lime);
  scroll-margin-top:120px;
}
.article-body h3{
  font-size:20px;font-weight:700;color:var(--brand-900);margin:30px 0 14px;
  scroll-margin-top:120px;
}
.article-body h4{font-size:17px;font-weight:700;margin:22px 0 10px;}
.article-body p{margin:0 0 1.4em;}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:22px;}
.article-body ul{list-style:none;padding-left:6px;}
.article-body ul li{position:relative;padding-left:20px;margin:.5em 0;}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;
  border-radius:50%;background:var(--brand-500);
}
.article-body ol{list-style:decimal;}
.article-body ol li{margin:.5em 0;padding-left:4px;}
.article-body ol li::marker{color:var(--brand-500);font-weight:700;}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;background:var(--surface-2);
  border-left:3px solid var(--accent);border-radius:12px;color:var(--muted);font-size:16px;
}
.article-body img{border-radius:16px;margin:24px 0 8px;width:100%;height:auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;}
.article-body a{color:var(--brand-500);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand-700);}
.article-body strong{color:var(--brand-900);}
.article-body table{
  width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;
  display:block;overflow-x:auto;white-space:nowrap;
}
.article-body th{
  background:var(--brand-900);color:#fff;font-weight:600;text-align:left;
  padding:13px 16px;font-size:14px;
}
.article-body td{padding:13px 16px;border-bottom:1px solid var(--line);color:var(--ink);}
.article-body tr:nth-child(even) td{background:rgba(241,238,230,.55);}
.article-body tr:hover td{background:rgba(18,161,119,.06);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:34px 0;}

.empty-state{
  background:var(--surface);border:1px dashed var(--line);border-radius:var(--radius-lg);
  padding:70px 30px;text-align:center;
}
.empty-icon{
  width:66px;height:66px;border-radius:50%;background:var(--surface-2);
  display:flex;align-items:center;justify-content:center;margin:0 auto 18px;
  color:var(--brand-500);font-size:24px;
}
.empty-state p{color:var(--muted);font-size:16px;margin-bottom:16px;}

/* 标签 */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:36px 0 0;padding-top:26px;border-top:1px solid var(--line);max-width:800px;}
.tag-row .tag{
  font-size:13px;color:var(--brand-700);background:rgba(18,161,119,.08);
  padding:8px 15px;border-radius:14px;transition:background .2s var(--ease);
}
.tag-row .tag:hover{background:rgba(18,161,119,.18);}
.back-channel{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:700;
  color:var(--brand-700);margin-top:22px;
}
.back-channel i{transition:transform .2s var(--ease);}
.back-channel:hover i{transform:translateX(-3px);}

/* 侧栏 */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;min-width:0;}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:20px;box-shadow:var(--shadow-sm);
}
.side-title{
  font-size:14px;font-weight:700;color:var(--brand-900);
  display:flex;align-items:center;gap:8px;margin-bottom:14px;
}
.side-title::before{content:"";width:4px;height:15px;border-radius:3px;background:var(--brand-lime);}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:340px;overflow-y:auto;}
.toc-list a{
  display:block;font-size:14px;color:var(--muted);padding:8px 12px;border-radius:10px;
  border-left:3px solid transparent;transition:all .2s var(--ease);line-height:1.5;
}
.toc-list a.lv3{padding-left:24px;font-size:13px;}
.toc-list a:hover{color:var(--brand-700);background:var(--surface-2);}
.toc-list a.is-current{color:var(--brand-700);background:rgba(18,161,119,.09);border-left-color:var(--brand-lime);font-weight:600;}
.toc-empty{font-size:13px;color:var(--muted);}
.side-post{display:flex;gap:12px;padding:10px 0;border-bottom:1px solid var(--line);}
.side-post:last-child{border-bottom:0;padding-bottom:0;}
.side-post img{width:74px;height:56px;border-radius:12px;object-fit:cover;background:var(--surface-2);flex-shrink:0;}
.side-post span{font-size:14px;font-weight:600;line-height:1.5;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.side-post:hover span{color:var(--brand-500);}
.side-contact{background:var(--brand-900);border-color:var(--brand-900);color:#fff;}
.side-contact .side-title{color:#fff;}
.side-contact p{font-size:13px;color:rgba(255,255,255,.72);line-height:1.75;margin-bottom:14px;}
.side-contact strong{color:var(--brand-lime);font-size:18px;display:block;margin-bottom:6px;letter-spacing:.01em;}
.side-contact .btn{width:100%;height:44px;}

/* 相关推荐 */
.related-section{padding:80px 0 0;}
.section-head{margin-bottom:28px;}
.section-head h2{
  font-size:clamp(22px,2.6vw,30px);font-weight:700;color:var(--brand-900);position:relative;padding-bottom:12px;
}
.section-head h2::after{
  content:"";position:absolute;left:0;bottom:0;width:48px;height:4px;border-radius:4px;
  background:linear-gradient(120deg,var(--brand-500),var(--brand-lime));
}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.post-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
  overflow:hidden;box-shadow:var(--shadow-sm);transition:all .24s var(--ease);display:block;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.post-thumb{aspect-ratio:16/10;background:var(--surface-2);overflow:hidden;}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.post-card:hover .post-thumb img{transform:scale(1.04);}
.post-body{padding:20px 20px 22px;}
.post-chip{
  display:inline-block;font-size:12px;font-weight:700;color:var(--brand-700);
  background:rgba(18,161,119,.09);padding:5px 12px;border-radius:12px;
}
.post-body h3{
  font-size:18px;font-weight:700;line-height:1.45;margin:12px 0 10px;color:var(--brand-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-body p{
  font-size:14px;color:var(--muted);line-height:1.75;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{
  display:flex;align-items:center;gap:10px;margin-top:16px;
  font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:14px;
}
.post-foot .more{margin-left:auto;color:var(--brand-500);font-weight:700;display:inline-flex;align-items:center;gap:6px;}
.post-foot .more i{transition:transform .2s var(--ease);}
.post-card:hover .more i{transform:translateX(3px);}

/* CTA 条 */
.cta-strip{margin:80px 0 0;}
.cta-inner{
  background:var(--brand-900);border-radius:var(--radius-lg);padding:32px 40px;
  display:flex;align-items:center;gap:28px;flex-wrap:wrap;position:relative;overflow:hidden;
}
.cta-inner::after{
  content:"";position:absolute;right:-70px;top:-70px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,rgba(204,242,78,.26),rgba(18,161,119,.05) 60%,transparent 72%);
}
.cta-text{position:relative;z-index:1;}
.cta-text h2{font-size:clamp(20px,2.4vw,26px);color:#fff;font-weight:700;margin-bottom:8px;}
.cta-text p{font-size:14px;color:rgba(255,255,255,.7);}
.cta-inner .btn{margin-left:auto;position:relative;z-index:1;}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.72);margin-top:96px;padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:linear-gradient(120deg,var(--brand-500),var(--brand-lime));}
.footer-brand strong{color:#fff;font-size:18px;font-weight:800;letter-spacing:-.01em;}
.footer-about{font-size:14px;line-height:1.9;color:rgba(255,255,255,.6);max-width:340px;}
.footer-title{
  font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;position:relative;padding-bottom:10px;
}
.footer-title::after{content:"";position:absolute;left:0;bottom:0;width:26px;height:3px;border-radius:3px;background:var(--brand-lime);}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.68);transition:color .2s var(--ease);}
.footer-links a:hover{color:var(--brand-lime);}
.footer-info{display:flex;flex-direction:column;gap:10px;font-size:14px;color:rgba(255,255,255,.68);}
.footer-info strong{color:#fff;font-weight:600;}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* Toast */
.toast{
  position:fixed;left:50%;bottom:38px;transform:translate(-50%,20px);
  background:var(--brand-900);color:#fff;font-size:14px;padding:12px 22px;border-radius:999px;
  opacity:0;visibility:hidden;transition:all .26s var(--ease);z-index:200;
  box-shadow:0 18px 40px -18px rgba(6,43,36,.7);
}
.toast.is-show{opacity:1;visibility:visible;transform:translate(-50%,0);}

@media (max-width:1100px){
  .article-layout{grid-template-columns:minmax(0,1fr) 290px;gap:36px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
}
@media (max-width:1024px){
  .wrap{padding:0 28px;}
  .header-bottom{display:none;}
  .menu-toggle{display:inline-flex;}
  .hotline{display:none;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px;}
  .article-side{position:static;}
  .article-body{max-width:100%;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:768px){
  .wrap{padding:0 20px;}
  .header-top-inner{height:64px;gap:12px;}
  .site-header.is-scrolled .header-top-inner{height:56px;}
  .brand-text{font-size:18px;}
  .btn-sm{display:none;}
  .article-head h1{font-size:26px;}
  .breadcrumb .current{max-width:42%;}
  .cta-inner{padding:26px 22px;}
  .cta-inner .btn{margin-left:0;width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-bottom{flex-direction:column;}
  .site-footer{margin-top:64px;padding:48px 0 24px;}
  .related-section{padding-top:56px;}
  .cta-strip{margin-top:56px;}
}
@media (max-width:520px){
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:1fr;}
  .meta-row{gap:10px;}
  .share-group{width:100%;}
  .hero-figure{border-radius:18px;}
  .article-body{font-size:16px;}
}

/* roulang page: category1 */
:root{
    --brand-900:#062B24;
    --brand-700:#0E5C4A;
    --brand-500:#12A177;
    --brand-lime:#CCF24E;
    --accent:#FF6A2B;
    --accent-2:#FFB020;
    --bg:#F7F5F0;
    --surface:#FFFFFF;
    --surface-2:#F1EEE6;
    --ink:#14201D;
    --muted:#5C6B66;
    --line:#E4E1D8;
    --radius-lg:28px;
    --radius-md:20px;
    --radius-sm:14px;
    --shadow-sm:0 1px 2px rgba(20,32,29,.04), 0 12px 32px -12px rgba(20,32,29,.12);
    --shadow-lg:0 18px 40px -14px rgba(20,32,29,.20);
    --ease:cubic-bezier(.2,.8,.2,1);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
    background:var(--bg);
    color:var(--ink);
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border:0;}
  a{color:inherit;text-decoration:none;}
  button,input,select,textarea{font:inherit;color:inherit;}
  button{background:none;border:0;cursor:pointer;}
  h1,h2,h3,h4,p,ul,ol{margin:0;padding:0;}
  ul,ol{list-style:none;}
  a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
    outline:2px solid var(--brand-500);
    outline-offset:2px;
    border-radius:8px;
  }

  .wrap{
    width:100%;
    max-width:1280px;
    margin:0 auto;
    padding:0 20px;
  }
  @media (min-width:768px){ .wrap{padding:0 28px;} }
  @media (min-width:1024px){ .wrap{padding:0 40px;} }

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:46px;
    padding:0 22px;
    border-radius:999px;
    font-size:15px;
    font-weight:600;
    line-height:1;
    transition:transform .22s var(--ease), box-shadow .22s var(--ease), background-color .22s var(--ease), border-color .22s var(--ease), color .22s var(--ease);
    white-space:nowrap;
  }
  .btn-primary{
    background:linear-gradient(120deg,var(--accent),var(--accent-2));
    color:#fff;
    box-shadow:0 10px 24px -12px rgba(255,106,43,.85);
  }
  .btn-primary:hover{transform:translateY(-1px);box-shadow:0 16px 30px -14px rgba(255,106,43,.9);filter:brightness(1.04);}
  .btn-primary:active{transform:translateY(1px);}
  .btn-ghost{
    background:var(--surface);
    border:1px solid var(--line);
    color:var(--brand-700);
  }
  .btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-700);transform:translateY(-1px);box-shadow:var(--shadow-sm);}
  .btn-ghost-light{
    background:rgba(255,255,255,.10);
    border:1px solid rgba(255,255,255,.42);
    color:#fff;
  }
  .btn-ghost-light:hover{background:rgba(255,255,255,.2);border-color:var(--brand-lime);transform:translateY(-1px);}
  .btn-sm{min-height:40px;padding:0 18px;font-size:14px;}
  .text-link{
    display:inline-flex;align-items:center;gap:6px;
    color:var(--brand-700);font-weight:600;font-size:14px;
  }
  .text-link span{transition:transform .22s var(--ease);}
  .text-link:hover{color:var(--brand-500);}
  .text-link:hover span{transform:translateX(3px);}

  /* ============ 顶部导航 ============ */
  .site-header{
    position:sticky;top:0;z-index:70;
    background:rgba(255,255,255,.92);
    backdrop-filter:blur(8px);
    border-bottom:1px solid var(--line);
    transition:box-shadow .24s var(--ease);
  }
  .site-header.is-scrolled{box-shadow:0 10px 26px -18px rgba(20,32,29,.55);}
  .header-top-inner{
    display:flex;align-items:center;justify-content:space-between;gap:18px;
    height:66px;transition:height .24s var(--ease);
  }
  .site-header.is-scrolled .header-top-inner{height:56px;}
  .brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
  .brand-mark{
    width:38px;height:38px;border-radius:12px;
    display:inline-flex;align-items:center;justify-content:center;
    background:linear-gradient(120deg,var(--brand-500),var(--brand-lime));
    color:var(--brand-900);font-weight:800;font-size:18px;
    box-shadow:0 8px 18px -12px rgba(18,161,119,.9);
  }
  .brand-text{font-size:19px;font-weight:800;letter-spacing:-.02em;color:var(--brand-900);}
  .brand-text i{font-style:normal;color:var(--brand-500);}
  .header-top-right{display:flex;align-items:center;gap:10px;}
  .hotline{font-size:13px;color:var(--muted);}
  .hotline strong{color:var(--brand-700);font-weight:700;}
  .icon-btn{
    width:44px;height:44px;border-radius:14px;
    display:inline-flex;align-items:center;justify-content:center;
    border:1px solid var(--line);color:var(--brand-700);background:var(--surface);
    transition:background-color .22s var(--ease), color .22s var(--ease), border-color .22s var(--ease);
  }
  .icon-btn:hover{background:rgba(18,161,119,.1);border-color:var(--brand-500);}
  .menu-toggle{display:none;}

  .header-bottom{border-top:1px solid var(--line);}
  .site-header.is-scrolled .header-bottom{border-top-color:transparent;}
  .header-bottom-inner{
    display:flex;align-items:center;justify-content:space-between;gap:18px;
    height:52px;transition:height .24s var(--ease);
  }
  .site-header.is-scrolled .header-bottom-inner{height:44px;}
  .channels{display:flex;align-items:center;gap:4px;}
  .channel{
    position:relative;
    padding:9px 14px;border-radius:12px;
    font-size:15px;font-weight:600;color:var(--muted);
    transition:color .22s var(--ease), background-color .22s var(--ease);
    white-space:nowrap;
  }
  .channel:hover{color:var(--brand-700);background:rgba(18,161,119,.08);}
  .channel.is-active{color:var(--brand-700);background:rgba(18,161,119,.08);}
  .channel.is-active::after{
    content:"";position:absolute;left:14px;right:14px;bottom:3px;height:3px;
    border-radius:999px;background:var(--brand-lime);
  }
  .hot-chips{display:flex;align-items:center;gap:8px;overflow:hidden;}
  .hot-chips .chip-label{font-size:12px;color:var(--muted);flex-shrink:0;}
  .site-header.is-compact .hot-chips{display:none;}
  .chip{
    display:inline-flex;align-items:center;
    padding:5px 12px;border-radius:14px;
    background:rgba(18,161,119,.08);
    color:var(--brand-700);font-size:13px;line-height:1.6;
    transition:background-color .22s var(--ease), color .22s var(--ease);
    white-space:nowrap;
  }
  .chip:hover{background:rgba(18,161,119,.16);}

  /* 搜索面板 */
  .search-panel{
    position:fixed;inset:0;z-index:90;
    background:rgba(6,43,36,.42);
    display:none;
  }
  .search-panel.is-open{display:block;}
  .search-box{
    background:var(--surface);
    border-bottom:1px solid var(--line);
    padding:26px 0 30px;
    box-shadow:0 24px 50px -30px rgba(20,32,29,.5);
  }
  .search-field{
    display:flex;align-items:center;gap:10px;
    border:1px solid var(--line);border-radius:14px;
    background:#fff;padding:6px 6px 6px 16px;
    transition:border-color .22s var(--ease), box-shadow .22s var(--ease);
  }
  .search-field:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(18,161,119,.14);}
  .search-field input{border:0;outline:none;flex:1;min-height:44px;font-size:15px;background:transparent;}
  .search-meta{display:flex;gap:32px;margin-top:22px;flex-wrap:wrap;}
  .search-meta h4{font-size:13px;color:var(--muted);font-weight:600;margin-bottom:10px;}
  .search-meta .chip-row{display:flex;flex-wrap:wrap;gap:8px;}

  /* 移动抽屉 */
  .drawer-mask{position:fixed;inset:0;background:rgba(6,43,36,.45);z-index:95;display:none;}
  .drawer-mask.is-open{display:block;}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:82%;max-width:360px;z-index:96;
    background:var(--surface);
    transform:translateX(102%);
    transition:transform .26s var(--ease);
    padding:22px;overflow-y:auto;
    box-shadow:-24px 0 50px -30px rgba(20,32,29,.6);
  }
  .drawer.is-open{transform:translateX(0);}
  .drawer-search{display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:14px;padding:8px 12px;margin-bottom:22px;}
  .drawer-search input{border:0;outline:none;flex:1;min-height:32px;background:transparent;}
  .drawer h4{font-size:13px;color:var(--muted);font-weight:600;margin:18px 0 10px;}
  .drawer-links{display:flex;flex-direction:column;gap:4px;}
  .drawer-links a{
    display:flex;align-items:center;justify-content:space-between;
    padding:12px 14px;border-radius:14px;font-size:15px;font-weight:600;color:var(--brand-700);
    background:rgba(18,161,119,.06);
  }
  .drawer-links a:hover{background:rgba(18,161,119,.14);}
  .drawer-chips{display:flex;flex-wrap:wrap;gap:8px;}

  /* ============ 分类 Hero ============ */
  .cat-hero{position:relative;overflow:hidden;background:var(--brand-900);color:#fff;}
  .cat-hero-bg{
    position:absolute;inset:0;
    background-size:cover;background-position:center;
    opacity:.55;
  }
  .cat-hero::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(120deg, rgba(6,43,36,.94) 12%, rgba(6,43,36,.72) 58%, rgba(14,92,74,.62) 100%);
  }
  .cat-hero-inner{position:relative;z-index:2;padding:56px 0 64px;}
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.7);flex-wrap:wrap;}
  .breadcrumb a{color:rgba(255,255,255,.82);}
  .breadcrumb a:hover{color:var(--brand-lime);}
  .breadcrumb em{font-style:normal;color:var(--brand-lime);max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  .cat-hero h1{
    font-size:40px;line-height:1.2;font-weight:800;letter-spacing:-.02em;
    margin:18px 0 18px;max-width:16em;
  }
  .cat-hero-lead{max-width:780px;font-size:16px;line-height:1.9;color:rgba(255,255,255,.86);}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
  .hero-badges{display:flex;flex-wrap:wrap;gap:14px;margin-top:38px;}
  .data-badge{
    background:var(--brand-lime);color:var(--brand-900);
    border-radius:16px;padding:14px 20px;min-width:150px;
  }
  .data-badge b{display:block;font-size:28px;font-weight:800;line-height:1.1;letter-spacing:-.02em;}
  .data-badge span{font-size:13px;color:#1D3A33;}
  .cat-hero .data-badge{background:var(--brand-lime);}
  .cat-hero .data-badge.outline{
    background:transparent;border:1px solid rgba(204,242,78,.6);color:var(--brand-lime);
  }
  .cat-hero .data-badge.outline span{color:rgba(204,242,78,.8);}

  /* ============ 通用区块 ============ */
  .section{padding:72px 0;}
  .section-alt{background:var(--surface-2);}
  .section-head{max-width:780px;margin-bottom:36px;}
  .section-head h2{
    font-size:30px;line-height:1.3;font-weight:700;letter-spacing:-.01em;
  }
  .section-head h2::after{
    content:"";display:block;width:48px;height:4px;border-radius:999px;margin-top:12px;
    background:linear-gradient(120deg,var(--brand-500),var(--brand-lime));
  }
  .section-head p{color:var(--muted);margin-top:14px;font-size:15.5px;}

  /* ============ 材料库：筛选侧栏 + 卡片网格 ============ */
  .material-layout{display:grid;grid-template-columns:262px minmax(0,1fr);gap:32px;align-items:start;}
  .filter-panel{
    position:sticky;top:124px;
    background:var(--surface);border:1px solid var(--line);
    border-radius:24px;padding:22px;box-shadow:var(--shadow-sm);
  }
  .filter-panel h3{font-size:15px;font-weight:700;color:var(--brand-900);margin-bottom:4px;}
  .filter-panel .filter-note{font-size:13px;color:var(--muted);margin-bottom:16px;}
  .filter-group{padding-top:14px;border-top:1px dashed var(--line);margin-top:14px;}
  .filter-group:first-of-type{border-top:0;margin-top:0;padding-top:0;}
  .filter-group h4{font-size:13px;font-weight:700;color:var(--muted);margin-bottom:10px;letter-spacing:.02em;}
  .chips{display:flex;flex-wrap:wrap;gap:8px;}
  .chips button{
    padding:7px 13px;border-radius:14px;font-size:13.5px;
    background:rgba(18,161,119,.07);color:var(--brand-700);
    transition:background-color .2s var(--ease), color .2s var(--ease);
  }
  .chips button:hover{background:rgba(18,161,119,.15);}
  .chips button.is-selected{background:rgba(18,161,119,.18);color:var(--brand-700);font-weight:700;box-shadow:inset 0 0 0 1px rgba(18,161,119,.35);}

  .material-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
  .m-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
    overflow:hidden;box-shadow:var(--shadow-sm);
    display:flex;flex-direction:column;
    transition:transform .22s var(--ease), box-shadow .22s var(--ease);
  }
  .m-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);}
  .m-card-media{aspect-ratio:16/10;background:var(--surface-2);overflow:hidden;}
  .m-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
  .m-card:hover .m-card-media img{transform:scale(1.03);}
  .m-card-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:12px;flex:1;}
  .m-card-body h3{font-size:18px;font-weight:700;line-height:1.4;}
  .spec-list{display:flex;flex-direction:column;gap:8px;margin-top:2px;}
  .spec-list li{display:flex;align-items:baseline;font-size:13.5px;}
  .spec-key{color:var(--muted);flex-shrink:0;}
  .spec-dots{flex:1;border-bottom:1px dotted #CFCBBF;margin:0 8px;transform:translateY(-4px);}
  .spec-val{color:var(--ink);font-weight:600;text-align:right;}
  .m-card .text-link{margin-top:auto;}

  /* ============ 选型要点：1 大卡 + 3 横向列表条 ============ */
  .pick-layout{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:32px;align-items:start;}
  .pick-feature{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
    overflow:hidden;box-shadow:var(--shadow-sm);
  }
  .pick-feature img{aspect-ratio:16/10;width:100%;object-fit:cover;background:var(--surface-2);}
  .pick-feature .pick-feature-body{padding:26px 26px 28px;}
  .pick-feature h3{font-size:20px;font-weight:700;margin-bottom:10px;}
  .pick-feature p{color:var(--muted);font-size:15px;}
  .pick-rows{display:flex;flex-direction:column;gap:14px;}
  .pick-row{
    display:grid;grid-template-columns:96px minmax(0,1fr) 24px;gap:16px;align-items:center;
    background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:14px;
    transition:transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s var(--ease);
  }
  .pick-row:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:rgba(18,161,119,.4);}
  .pick-row img{width:96px;height:72px;object-fit:cover;border-radius:14px;background:var(--surface-2);}
  .pick-row h4{font-size:16px;font-weight:700;margin-bottom:4px;}
  .pick-row p{font-size:13.5px;color:var(--muted);line-height:1.7;}
  .pick-row .arrow{color:var(--brand-500);font-weight:700;transition:transform .22s var(--ease);}
  .pick-row:hover .arrow{transform:translateX(3px);}

  /* ============ 适用场景 ============ */
  .scene-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:24px;}
  .scene-card{
    position:relative;border-radius:var(--radius-lg);overflow:hidden;
    border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow-sm);
    display:flex;flex-direction:column;
  }
  .scene-card img{width:100%;height:100%;object-fit:cover;min-height:220px;background:var(--surface-2);}
  .scene-large{min-height:380px;}
  .scene-large .scene-overlay{
    position:absolute;left:0;right:0;bottom:0;padding:28px;
    background:linear-gradient(180deg, rgba(6,43,36,0) 0%, rgba(6,43,36,.88) 62%);
    color:#fff;
  }
  .scene-large h3{font-size:22px;font-weight:700;margin-bottom:8px;}
  .scene-large p{font-size:14.5px;color:rgba(255,255,255,.88);max-width:46ch;}
  .scene-stack{display:flex;flex-direction:column;gap:24px;}
  .scene-small{padding:22px;gap:10px;background:var(--surface);}
  .scene-small h3{font-size:17px;font-weight:700;}
  .scene-small p{font-size:14px;color:var(--muted);}
  .scene-small .tag{align-self:flex-start;}

  .tag{
    display:inline-flex;align-items:center;gap:6px;
    padding:4px 11px;border-radius:12px;font-size:12.5px;
    background:rgba(18,161,119,.1);color:var(--brand-700);
    align-self:flex-start;
  }

  /* ============ FAQ ============ */
  .faq-list{max-width:880px;margin:0 auto;}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-item:first-child{border-top:1px solid var(--line);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
    padding:22px 18px;text-align:left;font-size:17px;font-weight:600;color:var(--brand-900);
    transition:background-color .22s var(--ease);
  }
  .faq-q:hover{background:var(--surface-2);}
  .faq-item.is-open .faq-q{background:var(--surface-2);box-shadow:inset 3px 0 0 var(--brand-lime);}
  .faq-icon{
    width:28px;height:28px;border-radius:50%;flex-shrink:0;
    display:inline-flex;align-items:center;justify-content:center;
    border:1px solid var(--line);color:var(--brand-700);font-size:15px;
    transition:transform .24s var(--ease), background-color .24s var(--ease);
  }
  .faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--brand-lime);border-color:var(--brand-lime);color:var(--brand-900);}
  .faq-a{overflow:hidden;height:0;transition:height .26s var(--ease);}
  .faq-a-inner{padding:0 18px 24px;color:var(--muted);font-size:15px;line-height:1.9;max-width:72ch;}

  /* ============ CTA + 表单 ============ */
  .cta-section{background:var(--brand-900);color:#EAF3EF;}
  .cta-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,480px);gap:40px;align-items:center;}
  .cta-copy h2{font-size:30px;font-weight:700;color:#fff;line-height:1.3;}
  .cta-copy p{color:rgba(234,243,239,.8);margin-top:14px;font-size:15.5px;max-width:52ch;}
  .cta-facts{display:flex;flex-wrap:wrap;gap:14px;margin-top:24px;}
  .cta-fact{
    border:1px solid rgba(204,242,78,.45);border-radius:16px;padding:12px 18px;min-width:150px;
  }
  .cta-fact b{display:block;color:var(--brand-lime);font-size:24px;font-weight:800;line-height:1.2;}
  .cta-fact span{font-size:13px;color:rgba(234,243,239,.72);}
  .form-card{
    background:var(--surface);border-radius:var(--radius-lg);
    padding:28px;box-shadow:0 30px 60px -34px rgba(0,0,0,.6);
  }
  .form-card h3{font-size:19px;font-weight:700;color:var(--brand-900);margin-bottom:6px;}
  .form-card .form-hint{font-size:13.5px;color:var(--muted);margin-bottom:18px;}
  .field{margin-bottom:16px;}
  .field label{display:block;font-size:13.5px;color:var(--muted);margin-bottom:7px;}
  .field input,.field select,.field textarea{
    width:100%;border:1px solid var(--line);border-radius:14px;background:#FAF9F6;
    padding:12px 14px;font-size:14.5px;transition:border-color .22s var(--ease), box-shadow .22s var(--ease), background-color .22s var(--ease);
  }
  .field textarea{min-height:104px;resize:vertical;}
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;border-color:var(--brand-500);background:#fff;box-shadow:0 0 0 4px rgba(18,161,119,.14);
  }
  .form-tip{font-size:13px;color:var(--muted);margin-top:12px;}
  .form-status{
    display:none;margin-top:12px;font-size:13.5px;color:var(--brand-700);
    background:rgba(18,161,119,.1);border-radius:12px;padding:10px 14px;
  }
  .form-status.is-visible{display:block;}

  /* ============ 页脚 ============ */
  .site-footer{background:var(--brand-900);color:rgba(234,243,239,.78);padding:60px 0 26px;margin-top:0;}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
  .footer-brand strong{color:#fff;font-size:18px;font-weight:800;letter-spacing:-.01em;}
  .footer-about{font-size:14px;line-height:1.9;color:rgba(234,243,239,.7);max-width:44ch;}
  .footer-title{
    color:#fff;font-size:14px;font-weight:600;margin-bottom:16px;padding-bottom:10px;position:relative;
  }
  .footer-title::after{
    content:"";position:absolute;left:0;bottom:0;width:22px;height:3px;border-radius:999px;background:var(--brand-lime);
  }
  .footer-links{display:flex;flex-direction:column;gap:10px;}
  .footer-links a{font-size:14px;color:rgba(234,243,239,.76);transition:color .22s var(--ease);}
  .footer-links a:hover{color:var(--brand-lime);}
  .footer-info{display:flex;flex-direction:column;gap:10px;font-size:14px;}
  .footer-info strong{color:#fff;font-weight:600;}
  .footer-bottom{
    margin-top:44px;padding-top:20px;border-top:1px solid rgba(234,243,239,.16);
    display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
    font-size:13px;color:rgba(234,243,239,.6);
  }

  /* ============ 响应式 ============ */
  @media (max-width:1199px){
    .material-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .scene-grid{grid-template-columns:1fr;}
  }
  @media (max-width:1023px){
    .header-bottom{display:none;}
    .menu-toggle{display:inline-flex;}
    .hotline{display:none;}
    .cat-hero h1{font-size:34px;}
    .material-layout{grid-template-columns:1fr;}
    .filter-panel{position:static;}
    .chips{flex-wrap:nowrap;overflow-x:auto;padding-bottom:4px;}
    .chips::-webkit-scrollbar{height:0;}
    .pick-layout{grid-template-columns:1fr;}
    .cta-layout{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr 1fr;}
    .section{padding:60px 0;}
  }
  @media (max-width:767px){
    .header-top-right .btn-primary{display:none;}
    .cat-hero-inner{padding:38px 0 48px;}
    .cat-hero h1{font-size:29px;}
    .cat-hero-lead{font-size:15px;}
    .section-head h2{font-size:25px;}
    .material-grid{grid-template-columns:1fr;}
    .scene-large{min-height:300px;}
    .footer-grid{grid-template-columns:1fr;}
    .section{padding:52px 0;}
    .form-card{padding:22px;}
  }
  @media (max-width:519px){
    .brand-text{font-size:17px;}
    .data-badge{min-width:calc(50% - 7px);padding:12px 16px;}
    .data-badge b{font-size:24px;}
    .pick-row{grid-template-columns:72px minmax(0,1fr) 18px;gap:12px;}
    .pick-row img{width:72px;height:60px;}
    .hero-actions .btn{width:100%;}
  }

/* roulang page: category2 */
:root{
  --brand-900:#062B24;
  --brand-700:#0E5C4A;
  --brand-500:#12A177;
  --brand-lime:#CCF24E;
  --accent:#FF6A2B;
  --accent-2:#FFB020;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --surface-2:#F1EEE6;
  --ink:#14201D;
  --muted:#5C6B66;
  --line:#E4E1D8;
  --radius-xl:28px;
  --radius:20px;
  --radius-sm:14px;
  --shadow:0 1px 2px rgba(20,32,29,.04), 0 12px 32px -12px rgba(20,32,29,.12);
  --shadow-hover:0 18px 40px -14px rgba(20,32,29,.20);
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:inherit}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.wrap{max-width:1280px;margin:0 auto;padding-left:40px;padding-right:40px}
a:focus-visible,button:focus-visible{outline:2px solid var(--brand-500);outline-offset:3px;border-radius:8px}

/* ============ 顶部导航 ============ */
.site-header{position:sticky;top:0;z-index:60}
.topbar{background:rgba(255,255,255,.94);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid transparent;transition:border-color .24s var(--ease)}
.is-shrink .topbar{border-bottom-color:var(--line);box-shadow:0 8px 24px -18px rgba(20,32,29,.45)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:70px;transition:height .24s var(--ease)}
.is-shrink .topbar-inner{height:56px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;min-width:0}
.brand-mark{width:40px;height:40px;flex:none;border-radius:13px;background:linear-gradient(120deg,var(--brand-500),var(--brand-lime));color:var(--brand-900);font-weight:800;font-size:19px;display:flex;align-items:center;justify-content:center;letter-spacing:0}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-text strong{font-size:17px;font-weight:800;color:var(--brand-900);line-height:1.25;white-space:nowrap}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted);line-height:1.4;white-space:nowrap}
.topbar-right{display:flex;align-items:center;gap:12px}
.hotline{font-size:13.5px;color:var(--muted);white-space:nowrap}
.icon-btn{width:44px;height:44px;flex:none;border-radius:14px;border:1px solid var(--line);background:#fff;color:var(--brand-700);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:border-color .2s var(--ease),background-color .2s var(--ease),transform .2s var(--ease)}
.icon-btn:hover{border-color:var(--brand-500);background:rgba(18,161,119,.08)}
.icon-btn:active{transform:translateY(1px)}
.nav-burger{display:none}

.channelbar{background:rgba(255,255,255,.88);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.channelbar-inner{display:flex;align-items:center;gap:22px;height:58px;transition:height .24s var(--ease)}
.is-shrink .channelbar-inner{height:46px}
.channels{display:flex;align-items:center;gap:6px;flex:1;min-width:0;overflow-x:auto;scrollbar-width:none}
.channels::-webkit-scrollbar{display:none}
.channel{position:relative;display:inline-flex;align-items:center;height:42px;padding:0 15px;border-radius:var(--radius-sm);color:var(--ink);text-decoration:none;font-size:15px;font-weight:600;white-space:nowrap;transition:background-color .2s var(--ease),color .2s var(--ease)}
.channel:hover{background:rgba(18,161,119,.08);color:var(--brand-700)}
.channel.is-active{background:rgba(18,161,119,.08);color:var(--brand-700)}
.channel.is-active::after{content:"";position:absolute;left:15px;right:15px;bottom:3px;height:3px;border-radius:2px;background:var(--brand-lime)}
.is-shrink .channel{height:36px}
.trends{display:flex;align-items:center;gap:8px;flex:none}
.trend-label{font-size:13px;color:var(--muted);white-space:nowrap}
.chip{display:inline-flex;align-items:center;height:30px;padding:0 12px;border-radius:var(--radius-sm);background:rgba(18,161,119,.08);color:var(--brand-700);font-size:13px;text-decoration:none;white-space:nowrap;transition:background-color .2s var(--ease)}
.chip:hover{background:rgba(18,161,119,.16)}

.search-panel{display:none;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
.search-panel.is-open{display:block}
.search-inner{padding-top:26px;padding-bottom:28px}
.search-form{display:flex;gap:12px;max-width:760px}
.search-form input{flex:1;height:50px;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--bg);padding:0 18px;font-size:15px;color:var(--ink);transition:border-color .2s var(--ease),background-color .2s var(--ease),box-shadow .2s var(--ease)}
.search-form input:focus{outline:none;background:#fff;border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(18,161,119,.14)}
.search-hot{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.search-hot a{display:inline-flex;align-items:center;height:34px;padding:0 14px;border-radius:var(--radius-sm);background:var(--surface-2);color:var(--brand-700);font-size:13.5px;text-decoration:none;transition:background-color .2s var(--ease)}
.search-hot a:hover{background:rgba(18,161,119,.14)}

.drawer-mask{position:fixed;inset:0;background:rgba(6,43,36,.46);opacity:0;pointer-events:none;transition:opacity .24s var(--ease);z-index:80}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.site-drawer{position:fixed;top:0;right:0;bottom:0;width:82%;max-width:368px;background:#fff;z-index:90;transform:translateX(100%);transition:transform .28s var(--ease);overflow-y:auto;padding:22px 22px 40px;box-shadow:-18px 0 40px -24px rgba(20,32,29,.5)}
.site-drawer.is-open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:20px}
.drawer-head strong{font-size:16px;color:var(--brand-900)}
.drawer-title{font-size:13px;font-weight:600;color:var(--muted);margin:24px 0 12px}
.drawer-links{display:flex;flex-direction:column;gap:4px}
.drawer-links a{display:flex;align-items:center;min-height:44px;padding:0 14px;border-radius:var(--radius-sm);text-decoration:none;font-size:15px;font-weight:600;color:var(--ink);transition:background-color .2s var(--ease),color .2s var(--ease)}
.drawer-links a:hover,.drawer-links a.is-active{background:rgba(18,161,119,.08);color:var(--brand-700)}
.drawer-chips{display:flex;flex-wrap:wrap;gap:8px}

/* ============ 通用 ============ */
.section{padding:92px 0}
.section.alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:780px;margin-bottom:46px}
.section-head h2{font-size:clamp(24px,2.7vw,34px);font-weight:700;line-height:1.32;position:relative;padding-bottom:16px}
.section-head h2::after{content:"";position:absolute;left:0;bottom:0;width:48px;height:4px;border-radius:2px;background:linear-gradient(120deg,var(--brand-500),var(--brand-lime))}
.section-sub{margin-top:18px;color:var(--muted);font-size:16px;max-width:720px}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 24px;border-radius:999px;border:1px solid transparent;font-size:15px;font-weight:600;text-decoration:none;cursor:pointer;transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),filter .2s var(--ease)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:linear-gradient(120deg,var(--accent),var(--accent-2));color:#fff;box-shadow:0 12px 26px -14px rgba(255,106,43,.75)}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.04);box-shadow:0 18px 32px -16px rgba(255,106,43,.8)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:#fff;border-color:var(--line);color:var(--brand-700)}
.btn-outline:hover{border-color:var(--brand-500);box-shadow:var(--shadow)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.42);color:#fff}
.btn-ghost:hover{border-color:var(--brand-lime);color:var(--brand-lime)}
.textlink{display:inline-flex;align-items:center;gap:9px;min-height:44px;color:var(--brand-700);font-weight:600;text-decoration:none;font-size:15.5px}
.textlink i{font-style:normal;transition:transform .2s var(--ease)}
.textlink:hover i{transform:translateX(3px)}

/* ============ 分类 Hero ============ */
.cat-hero{position:relative;overflow:hidden;background:linear-gradient(180deg,#FCFAF6 0%,var(--bg) 100%);border-bottom:1px solid var(--line)}
.hero-marks{position:absolute;right:-40px;top:-40px;width:440px;height:340px;opacity:.08;pointer-events:none;background-image:radial-gradient(var(--brand-700) 1.6px,transparent 1.6px);background-size:18px 18px}
.hero-rule{position:absolute;left:0;right:0;bottom:0;height:6px;opacity:.14;pointer-events:none;background-image:repeating-linear-gradient(90deg,var(--brand-500) 0 2px,transparent 2px 14px)}
.cat-hero-inner{position:relative;padding-top:72px;padding-bottom:72px}
.crumb{font-size:14px;color:var(--muted);margin-bottom:20px}
.crumb a{color:var(--muted);text-decoration:none;transition:color .2s var(--ease)}
.crumb a:hover{color:var(--brand-500)}
.crumb span{margin:0 8px;opacity:.6}
.cat-hero h1{font-size:clamp(29px,4.2vw,50px);font-weight:800;line-height:1.2;letter-spacing:-.02em;max-width:940px}
.cat-hero-lead{margin-top:22px;max-width:830px;font-size:17px;line-height:1.95;color:var(--muted)}
.hero-actions{display:flex;flex-wrap:wrap;gap:26px;margin-top:30px}
.badge-row{display:flex;flex-wrap:wrap;gap:16px;margin-top:40px}
.stat-badge{background:var(--brand-lime);color:var(--brand-900);border-radius:16px;padding:16px 24px;min-width:172px;box-shadow:0 10px 24px -18px rgba(6,43,36,.6)}
.stat-badge b{display:block;font-size:28px;font-weight:800;line-height:1.15;letter-spacing:-.01em}
.stat-badge span{display:block;margin-top:4px;font-size:13px;color:rgba(6,43,36,.72)}

/* ============ 步骤叙事流 ============ */
.steps-layout{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);gap:52px;align-items:start}
.steps-media{position:sticky;top:128px}
.steps-media figure{margin:0}
.steps-media img{width:100%;border-radius:var(--radius-xl);background:var(--surface-2);box-shadow:var(--shadow);aspect-ratio:4/3.2;object-fit:cover}
.media-note{margin-top:18px;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:18px 20px;font-size:14px;line-height:1.8;color:var(--muted)}
.media-note b{display:block;color:var(--brand-900);font-size:15px;margin-bottom:6px}
.steps-list{display:flex;flex-direction:column;gap:6px}
.step{display:grid;grid-template-columns:54px minmax(0,1fr);gap:20px;padding:24px 24px 24px 20px;border-radius:var(--radius);border:1px solid transparent;transition:background-color .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease),transform .24s var(--ease)}
.step:hover{background:var(--surface);border-color:var(--line);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.step-num{width:54px;height:54px;border-radius:50%;background:var(--brand-lime);color:var(--brand-900);font-weight:800;font-size:18px;display:flex;align-items:center;justify-content:center;flex:none}
.step h3{font-size:19px;font-weight:700;line-height:1.45;margin-bottom:8px}
.step p{color:var(--muted);font-size:15.5px;line-height:1.85}
.step-param{display:inline-block;margin-top:14px;font-size:13.5px;color:var(--brand-700);background:rgba(18,161,119,.08);border-radius:12px;padding:8px 14px;line-height:1.6}

/* ============ 规格表 ============ */
.spec-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow);-webkit-overflow-scrolling:touch}
table.spec{width:100%;border-collapse:collapse;min-width:760px;font-size:15px}
.spec thead th{background:var(--brand-900);color:#fff;text-align:left;font-weight:600;font-size:14.5px;padding:17px 22px;white-space:nowrap}
.spec tbody td{padding:17px 22px;border-top:1px solid var(--line);color:var(--ink);vertical-align:top}
.spec tbody td:first-child{font-weight:600;color:var(--brand-900)}
.spec tbody tr:nth-child(even){background:var(--surface-2)}
.spec tbody tr{transition:background-color .2s var(--ease)}
.spec tbody tr:hover{background:rgba(18,161,119,.07)}
.spec-note{margin-top:18px;font-size:13.5px;color:var(--muted)}

/* ============ 场景卡 ============ */
.scene-grid{display:grid;grid-template-columns:1.18fr 1fr;grid-template-rows:auto auto;gap:24px}
.scene{position:relative;border-radius:var(--radius-xl);overflow:hidden;border:1px solid var(--line);background:var(--brand-900);box-shadow:var(--shadow);text-decoration:none;display:block;transition:transform .24s var(--ease),box-shadow .24s var(--ease)}
.scene:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.scene.big{grid-row:span 2}
.scene img{width:100%;height:100%;object-fit:cover;background:var(--surface-2);transition:transform .3s var(--ease)}
.scene.big img{aspect-ratio:4/3.6}
.scene.small img{aspect-ratio:16/9}
.scene:hover img{transform:scale(1.03)}
.scene-body{position:absolute;left:0;right:0;bottom:0;padding:24px;color:#fff;background:linear-gradient(180deg,rgba(6,43,36,0) 0%,rgba(6,43,36,.88) 78%)}
.scene-body h3{font-size:19px;font-weight:700;margin-bottom:8px;color:#fff}
.scene-body p{font-size:14px;line-height:1.75;color:rgba(255,255,255,.82)}
.scene-tag{display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;background:rgba(204,242,78,.9);color:var(--brand-900);font-size:12.5px;font-weight:600;margin-bottom:12px}

/* ============ FAQ ============ */
.faq{max-width:880px;margin:0 auto}
.faq-item{position:relative;border-bottom:1px solid var(--line);transition:background-color .24s var(--ease)}
.faq-item::before{content:"";position:absolute;left:-22px;top:26px;bottom:26px;width:3px;border-radius:2px;background:var(--brand-lime);opacity:0;transition:opacity .24s var(--ease)}
.faq-item.is-open::before{opacity:1}
.faq-q{width:100%;min-height:44px;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:22px 0;background:none;border:0;text-align:left;font-size:17px;font-weight:600;color:var(--ink);cursor:pointer;transition:color .2s var(--ease)}
.faq-q:hover{color:var(--brand-700)}
.faq-item.is-open .faq-q{color:var(--brand-700)}
.faq-icon{width:30px;height:30px;flex:none;border-radius:50%;border:1px solid var(--line);background:#fff;display:flex;align-items:center;justify-content:center;color:var(--brand-700);transition:transform .26s var(--ease),background-color .26s var(--ease),border-color .26s var(--ease)}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--brand-lime);border-color:var(--brand-lime);color:var(--brand-900)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a p{padding:0 44px 24px 0;color:var(--muted);font-size:15.5px;line-height:1.9;max-width:780px}
.faq-item.is-open .faq-a{max-height:360px}

/* ============ CTA 条 ============ */
.cta-band{background:var(--brand-900);color:#fff;position:relative;overflow:hidden;padding:48px 0}
.cta-band::after{content:"";position:absolute;right:-80px;top:-60px;width:320px;height:220px;border:1px solid rgba(204,242,78,.35);border-radius:50%;opacity:.5;pointer-events:none}
.cta-band .wrap{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;position:relative;z-index:1}
.cta-band h2{font-size:clamp(21px,2.2vw,26px);font-weight:700;color:#fff;margin-bottom:10px;letter-spacing:-.01em}
.cta-band p{font-size:15px;color:rgba(255,255,255,.74);max-width:660px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.78);padding:66px 0 28px;font-size:15px}
.footer-grid{display:grid;grid-template-columns:1.45fr 1fr 1fr 1.15fr;gap:44px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-brand strong{color:#fff;font-size:18px;font-weight:800}
.footer-about{margin:0;max-width:370px;font-size:14.5px;line-height:1.9}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:20px;position:relative;padding-bottom:11px}
.footer-title::after{content:"";position:absolute;left:0;bottom:0;width:26px;height:3px;border-radius:2px;background:var(--brand-lime)}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14.5px;color:rgba(255,255,255,.78);text-decoration:none;transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-links a:hover{color:var(--brand-lime);transform:translateX(2px)}
.footer-info{display:flex;flex-direction:column;gap:12px;font-size:14.5px}
.footer-info strong{color:#fff;font-weight:600}
.footer-bottom{margin-top:50px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.6)}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .wrap{padding-left:28px;padding-right:28px}
  .section{padding:78px 0}
  .steps-layout{grid-template-columns:1fr;gap:40px}
  .steps-media{position:static;top:auto}
  .steps-media img{aspect-ratio:16/9}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .cat-hero-inner{padding-top:58px;padding-bottom:58px}
}
@media (max-width:900px){
  .scene-grid{grid-template-columns:1fr;gap:20px}
  .scene.big{grid-row:auto}
  .scene.big img{aspect-ratio:16/10}
  .hotline{display:none}
}
@media (max-width:768px){
  .channelbar{display:none}
  .nav-burger{display:inline-flex}
  .cat-hero-inner{padding-top:46px;padding-bottom:48px}
  .section{padding:64px 0}
  .step{grid-template-columns:44px minmax(0,1fr);gap:16px;padding:20px}
  .step-num{width:44px;height:44px;font-size:16px}
  .faq-item::before{left:-12px}
  .faq-item.is-open .faq-a{max-height:460px}
  .faq-a p{padding-right:0}
  .cta-band{padding:40px 0}
}
@media (max-width:640px){
  .wrap{padding-left:20px;padding-right:20px}
  .brand-text em{display:none}
  .footer-grid{grid-template-columns:1fr}
  .badge-row{gap:12px}
  .stat-badge{flex:1 1 45%;min-width:0;padding:14px 18px}
  .stat-badge b{font-size:24px}
  .hero-actions{gap:8px;flex-direction:column;align-items:flex-start}
  .btn{width:100%}
  .cta-actions{width:100%}
  .search-form{flex-direction:column}
  .search-form input{width:100%}
}