/* roulang page: index */
:root{
  --green:#7BBF6A;
  --green-deep:#5E9C50;
  --green-dark:#6AAA59;
  --green-soft:#EFF8EC;
  --green-mist:#F3F7F0;
  --orange:#F0A04B;
  --orange-dark:#DF8C36;
  --ink:#212A24;
  --muted:#5B675E;
  --weak:#849187;
  --dark:#1E2A21;
  --on-dark:#E7F0E4;
  --border:#E4EDE0;
  --white:#FFFFFF;
  --body-bg:#FBFCF9;
  --radius-lg:18px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow:0 4px 18px rgba(30,65,35,.06);
  --shadow-hover:0 12px 28px rgba(30,65,35,.10);
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  background:var(--body-bg);
  color:var(--ink);
  line-height:1.75;
  font-size:1rem;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
a:hover{color:inherit}
ul,ol{padding:0;margin:0;list-style:none}
button{font-family:inherit}
.container{max-width:1280px}

/* ===== 通用标题节奏 ===== */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  background:var(--green-soft);
  color:var(--green-deep);
  border-radius:999px;
  padding:.28rem .9rem;
  font-size:.8rem;
  font-weight:600;
  letter-spacing:.02em;
}
.section-title{
  font-size:clamp(1.5rem,2.6vw,2.25rem);
  font-weight:700;
  line-height:1.3;
  margin:.5rem 0 .75rem;
}
.section-lead{
  max-width:760px;
  color:var(--muted);
  margin-bottom:0;
}
.section-sub-lead{
  color:var(--weak);
  font-size:.9rem;
  margin-top:.4rem;
}

/* ===== Header 双行导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:1080;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(6px);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(30,42,33,.08)}
.nav-brand-row{
  height:72px;
  border-bottom:1px solid rgba(228,237,224,.8);
}
.brand-flex{
  height:72px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
}
.site-logo{
  display:inline-flex;
  align-items:center;
  gap:.7rem;
}
.logo-mark{
  width:42px;
  height:42px;
  border-radius:12px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:var(--green);
  color:#fff;
  font-size:1.3rem;
  flex:0 0 auto;
}
.logo-text{
  font-size:1.38rem;
  font-weight:800;
  line-height:1.2;
  color:var(--ink);
}
.logo-text small{
  display:block;
  font-size:.72rem;
  font-weight:500;
  color:var(--weak);
  letter-spacing:.04em;
}
.header-quick{
  display:flex;
  align-items:center;
  gap:.35rem;
  font-size:.9rem;
  color:var(--muted);
}
.header-quick a{
  padding:.55rem .8rem;
  border-radius:999px;
  transition:all .2s ease;
}
.header-quick a:hover{background:var(--green-soft);color:var(--green-deep)}
.header-quick .quick-icon{padding:.4rem .6rem}

.nav-channel-row{
  background:rgba(255,255,255,.85);
  border-bottom:1px solid var(--border);
  transition:all .25s ease;
}
.channel-flex{
  height:48px;
  display:flex;
  align-items:center;
  gap:1.2rem;
}
.channel-nav{
  height:100%;
  display:flex;
  align-items:stretch;
  gap:.2rem;
}
.channel-nav .nav-link{
  display:inline-flex;
  align-items:center;
  padding:0 1.1rem;
  font-size:.95rem;
  font-weight:600;
  color:var(--muted);
  border-bottom:3px solid transparent;
  margin-bottom:-1px;
  transition:all .2s ease;
}
.channel-nav .nav-link:hover{color:var(--green-deep);background:var(--green-mist)}
.channel-nav .nav-link.active{
  color:var(--green-deep);
  border-bottom-color:var(--green);
}
.mini-logo{
  display:none;
  font-weight:800;
  font-size:1.2rem;
  color:var(--ink);
  white-space:nowrap;
  align-items:center;
  gap:.45rem;
}
.mini-logo i{color:var(--green)}
.nav-toggle{
  margin-left:auto;
  width:44px;
  height:44px;
  border:1px solid var(--border);
  background:#fff;
  border-radius:12px;
  display:none;
  align-items:center;
  justify-content:center;
  font-size:1.3rem;
  color:var(--ink);
  cursor:pointer;
}
.nav-toggle:hover{background:var(--green-soft)}

.site-header.is-scrolled .nav-brand-row{display:none}
.site-header.is-scrolled .channel-flex{height:60px}
.site-header.is-scrolled .channel-nav .nav-link{line-height:60px}
.site-header.is-scrolled .mini-logo{
  display:inline-flex;
}
.site-header.is-scrolled.nav{background:#fff}

@media (min-width:992px){
  .site-header:not(.is-scrolled) .mini-logo{display:none}
}

/* 移动导航面板 */
.mobile-nav{
  display:none;
  flex-direction:column;
  background:#fff;
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
  padding:.6rem 1.2rem 1rem;
  gap:.15rem;
}
.mobile-nav.open{display:flex}
.mobile-nav a{
  padding:.85rem .5rem;
  font-weight:600;
  border-radius:12px;
  color:var(--muted);
}
.mobile-nav a:hover{background:var(--green-soft);color:var(--green-deep)}
.mobile-nav a:first-child{padding-top:.9rem}

@media (max-width:991.98px){
  .nav-brand-row{display:none}
  .channel-flex{height:60px}
  .channel-nav{display:none}
  .mini-logo{display:inline-flex}
  .nav-toggle{display:inline-flex}
}

/* ===== 按钮体系 ===== */
.btn{
  border-radius:var(--radius-md);
  font-weight:600;
  padding:.78rem 1.8rem;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5rem;
  border:1.5px solid transparent;
  transition:all .22s ease;
}
.btn-lg{padding:.9rem 2.2rem;font-size:1.02rem}
.btn-main{background:var(--green);color:#fff;border-color:var(--green)}
.btn-main:hover,.btn-main:focus{background:var(--green-dark);border-color:var(--green-dark);color:#fff}
.btn-main:active{background:var(--green-deep);transform:translateY(1px)}
.btn-accent{background:var(--orange);color:#fff;border-color:var(--orange)}
.btn-accent:hover,.btn-accent:focus{background:var(--orange-dark);border-color:var(--orange-dark);color:#fff}
.btn-accent:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:rgba(123,191,106,.8);color:var(--green)}
.btn-ghost:hover{background:var(--green-soft);color:var(--green-deep)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:none;
  box-shadow:0 0 0 4px rgba(123,191,106,.25);
}

/* ===== Hero 首屏 ===== */
.hero-section{
  background:
    linear-gradient(120deg,rgba(24,38,29,.92) 0%,rgba(30,42,33,.88) 48%,rgba(45,66,50,.78) 100%),
    url("/assets/images/backpic/back-1.jpg") right center / cover no-repeat;
  color:var(--on-dark);
  padding:clamp(3.2rem,6vw,5.4rem) 0;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.hero-grid{
  display:grid;
  grid-template-columns:1.35fr .9fr;
  gap:clamp(2rem,5vw,4.5rem);
  align-items:center;
}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:.55rem;
  background:rgba(123,191,106,.16);
  border:1px solid rgba(123,191,106,.35);
  color:#D9F0D0;
  padding:.4rem 1rem;
  border-radius:999px;
  font-size:.86rem;
  font-weight:600;
  margin-bottom:1.2rem;
}
.hero-badge i{color:var(--green)}
.hero-title{
  font-size:clamp(1.95rem,4vw,3.15rem);
  font-weight:800;
  line-height:1.25;
  margin-bottom:1rem;
  letter-spacing:-.01em;
}
.hero-lead{
  font-size:1.04rem;
  color:rgba(231,240,228,.88);
  line-height:1.9;
  margin-bottom:1.5rem;
  max-width:620px;
}
.hero-cta-group{
  display:flex;
  flex-wrap:wrap;
  gap:.9rem;
  align-items:center;
  margin-bottom:1.2rem;
}
.btn-ghost-light{
  background:transparent;
  border-color:rgba(255,255,255,.35);
  color:#E7F0E4;
}
.btn-ghost-light:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.5);color:#fff}
.hero-group-tip{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  font-size:.88rem;
  color:rgba(231,240,228,.8);
  margin-bottom:1.2rem;
}
.hero-group-tip i{color:var(--orange);font-size:1rem}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:.8rem;
}
.hero-stat{
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.12);
  border-radius:14px;
  padding:.55rem 1.1rem;
  font-size:.86rem;
  color:rgba(231,240,228,.85);
  display:inline-flex;
  align-items:center;
  gap:.4rem;
}
.hero-stat strong{color:#fff;font-size:1rem}
.hero-media{
  position:relative;
}
.media-frame{
  position:relative;
  border-radius:22px;
  overflow:hidden;
  border:1px solid rgba(123,191,106,.34);
  box-shadow:0 22px 55px rgba(8,16,10,.3);
  aspect-ratio:4/3;
  background:linear-gradient(135deg,#2B4A33,#1A2B20);
}
.media-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  opacity:.92;
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(200deg,rgba(30,42,33,.05),rgba(30,42,33,.4));
}
.media-play{
  position:absolute;
  top:50%;
  left:50%;
  transform:translate(-50%,-50%);
  width:74px;
  height:74px;
  border-radius:50%;
  background:var(--orange);
  color:#fff;
  border:none;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:1.7rem;
  box-shadow:0 0 0 12px rgba(240,160,75,.15);
  z-index:3;
  cursor:pointer;
  transition:all .25s ease;
}
.media-play:hover{background:#DF8C36;transform:translate(-50%,-50%) scale(1.05)}
.media-caption{
  position:absolute;
  left:1.2rem;
  bottom:1rem;
  z-index:4;
  background:rgba(18,27,21,.52);
  color:#E7F0E4;
  border:1px solid rgba(255,255,255,.14);
  border-radius:999px;
  padding:.3rem .85rem;
  font-size:.8rem;
  backdrop-filter:blur(5px);
}
@media (max-width:991.98px){
  .hero-grid{grid-template-columns:1fr}
  .hero-media{max-width:560px}
}

/* ===== 通用区块 ===== */
.section{padding:clamp(3.5rem,7vw,6.5rem) 0}
.bg-soft{background:var(--green-mist)}
.bg-plain{background:var(--body-bg)}
.section-head{
  max-width:780px;
  margin-bottom:2.5rem;
}

/* ===== 指标看板 ===== */
.metric-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:18px;
  padding:1.5rem 1.6rem 1.4rem;
  height:100%;
  box-shadow:var(--shadow);
  transition:all .25s ease;
  position:relative;
}
.metric-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--green)}
.metric-card .metric-top{display:flex;align-items:center;justify-content:space-between;gap:1rem}
.metric-value{
  color:var(--orange);
  font-size:2rem;
  font-weight:800;
  line-height:1.1;
}
.metric-value em{font-style:normal;font-size:.9rem;font-weight:700;margin-left:2px}
.metric-icon{
  width:40px;
  height:40px;
  background:var(--green-soft);
  color:var(--green-deep);
  border-radius:12px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:1.2rem;
}
.metric-label{display:block;color:var(--muted);font-size:.92rem;margin-top:.65rem}
.metric-trend{
  display:inline-flex;
  align-items:center;
  gap:.25rem;
  margin-top:.6rem;
  color:var(--green-deep);
  font-size:.78rem;
  background:var(--green-soft);
  padding:.2rem .65rem;
  border-radius:999px;
  font-weight:600;
}

/* ===== 分类服务矩阵 ===== */
.category-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow);
  height:100%;
  transition:all .25s ease;
  display:flex;
  flex-direction:column;
  position:relative;
}
.category-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--green)}
.category-media{
  aspect-ratio:16/10;
  overflow:hidden;
  border-bottom:1px solid var(--border);
  background:linear-gradient(135deg,#EBF5E6,#DCECCF);
  position:relative;
}
.category-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .45s ease;
}
.category-card:hover .category-media img{transform:scale(1.03)}
.category-media .cat-more-ico{
  position:absolute;
  right:1rem;
  bottom:1rem;
  width:38px;
  height:38px;
  border-radius:50%;
  background:var(--green);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:1rem;
  box-shadow:0 6px 18px rgba(30,65,35,.2);
  opacity:0;
  transform:translateY(8px);
  transition:all .3s ease;
}
.category-card:hover .cat-more-ico{opacity:1;transform:translateY(0)}
.category-body{padding:1.4rem 1.5rem 1.5rem;display:flex;flex-direction:column;flex:1}
.category-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:.8rem;
  margin-bottom:.55rem;
}
.category-title{
  display:flex;
  align-items:center;
  gap:.55rem;
  font-weight:700;
  font-size:1.15rem;
}
.category-title i{color:var(--green-deep)}
.category-body>p{color:var(--muted);font-size:.9rem;line-height:1.7;margin-bottom:.9rem;flex:1}
.category-points li{
  display:flex;
  gap:.45rem;
  align-items:baseline;
  color:var(--muted);
  font-size:.86rem;
  margin-bottom:.45rem;
}
.category-points li::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--green);
  flex:0 0 auto;
  transform:translateY(-2px);
}
.btn-more{
  margin-top:.9rem;
  display:inline-flex;
  align-items:center;
  gap:.25rem;
  color:var(--green-deep);
  font-weight:600;
  font-size:.9rem;
  width:fit-content;
}
.btn-more i{transition:transform .2s ease}
.btn-more:hover{color:var(--green)}
.btn-more:hover i{transform:translateX(4px)}

/* 徽章 */
.badge-hot{
  background:#FFF1E0;
  color:#D9772A;
  font-size:.75rem;
  font-weight:700;
  border-radius:999px;
  padding:.22rem .7rem;
  white-space:nowrap;
}
.badge-soft{
  background:var(--green-soft);
  color:var(--green-deep);
  font-size:.76rem;
  font-weight:700;
  border-radius:999px;
  padding:.26rem .75rem;
}
.badge-outline{
  border:1px solid var(--border);
  color:var(--muted);
  font-size:.78rem;
  border-radius:999px;
  padding:.28rem .8rem;
}

/* ===== 资讯区 ===== */
.news-block{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:1rem 1.2rem;
  box-shadow:var(--shadow);
}
.news-item{
  display:flex;
  align-items:center;
  gap:1rem;
  padding:1rem .3rem;
  border-bottom:1px solid #EFF4EC;
  color:var(--ink);
}
.news-item:last-child{border-bottom:none}
.news-item:hover{color:var(--green-deep)}
.news-date{
  flex:0 0 auto;
  background:var(--green-mist);
  color:var(--muted);
  font-size:.78rem;
  padding:.25rem .75rem;
  border-radius:999px;
}
.news-text{flex:1;font-size:.94rem;line-height:1.55}
.news-go{color:var(--weak);transition:transform .2s ease}
.news-item:hover .news-go{color:var(--green);transform:translateX(3px)}
.news-item:hover .news-date{background:var(--green-soft);color:var(--green-deep)}

.rec-side{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:1.5rem;
  box-shadow:var(--shadow);
  height:100%;
  position:sticky;
  top:220px;
}
.rec-side h3{
  font-size:1.1rem;
  font-weight:700;
  margin-bottom:1rem;
}
.rec-link{
  display:flex;
  align-items:center;
  gap:.65rem;
  padding:.7rem .75rem;
  border-radius:12px;
  color:var(--muted);
  font-weight:500;
  font-size:.9rem;
  transition:all .2s ease;
}
.rec-link i{color:var(--green-deep);font-size:1rem}
.rec-link:hover{background:var(--green-soft);color:var(--green-deep);padding-left:1rem}
.rec-more{
  display:block;
  margin-top:.8rem;
  padding:.7rem .8rem;
  color:var(--green-deep);
  font-weight:600;
  border-radius:12px;
  text-align:center;
  background:var(--green-soft);
}
.rec-more:hover{background:var(--green);color:#fff}

/* ===== 前后对比 ===== */
.compare-panel{
  border-radius:20px;
  padding:2.2rem 2rem;
  height:100%;
  border:1px solid var(--border);
  background:#fff;
}
.compare-panel.is-down{
  background:#F2F1ED;
  border-color:#E5E2DC;
  box-shadow:none;
}
.compare-panel.is-up{
  background:var(--green-soft);
  border-color:#CCE4C4;
}
.compare-label{
  font-weight:700;
  margin-bottom:1.2rem;
  display:flex;
  align-items:center;
  gap:.6rem;
  font-size:1.08rem;
}
.compare-panel.is-down .compare-label{color:#777371}
.compare-panel.is-up .compare-label{color:var(--green-deep)}
.compare-list li{
  display:flex;
  gap:.75rem;
  padding:.55rem 0;
  color:var(--muted);
  font-size:.93rem;
  align-items:flex-start;
}
.compare-list i{
  margin-top:.3rem;
  font-size:1.2rem;
}
.compare-panel.is-down .compare-list i{color:#B3B8B2}
.compare-panel.is-up .compare-list i{color:var(--green-deep)}
.compare-panel.is-down .compare-list li{color:#817E79}
.compare-result-strip{
  margin-top:1.5rem;
  background:linear-gradient(90deg,#1E2A21,#2B4E34);
  border-radius:18px;
  color:#fff;
  padding:1.4rem 2rem;
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:1.5rem;
  justify-content:space-between;
}
.compare-result-strip .grid-icon i{color:var(--orange);font-size:1.7rem}
.compare-result-strip strong{color:var(--orange);font-size:1.5rem;margin-right:.2rem}
.compare-result-strip p{margin:0;color:rgba(231,240,228,.85);font-size:.95rem}

/* ===== 数字亮点 ===== */
.feature-list-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:1rem 2.5rem;
}
.feature-item{
  display:flex;
  gap:1rem;
  align-items:flex-start;
  padding:1.15rem .2rem;
  border-bottom:1px solid #E8F0E5;
}
.feature-item:last-child{border-bottom:none}
.feature-num{
  color:var(--orange);
  font-weight:800;
  font-size:1.2rem;
  letter-spacing:.02em;
  min-width:2rem;
}
.feature-item h3{font-size:1rem;font-weight:700;margin:0 0 .25rem}
.feature-item p{margin:0;color:var(--muted);font-size:.88rem;line-height:1.7}
@media(max-width:767.98px){
  .feature-list-grid{grid-template-columns:1fr}
  .feature-item{padding:1rem 0}
}

/* ===== FAQ ===== */
.faq-section{
  background:var(--green-mist);
}
.faq-side{
  position:sticky;
  top:130px;
}
.faq-side .section-title{margin-top:.9rem}
.accordion-custom .accordion-item{
  border:1px solid var(--border);
  border-radius:16px !important;
  overflow:hidden;
  margin-bottom:.9rem;
  background:#fff;
  box-shadow:none;
}
.accordion-custom .accordion-item:last-child{margin-bottom:0}
.accordion-custom .accordion-button{
  background:#fff;
  color:var(--ink);
  font-weight:700;
  font-size:.98rem;
  padding:1.15rem 1.5rem;
  box-shadow:none;
  gap:.5rem;
}
.accordion-custom .accordion-button:not(.collapsed){
  background:var(--green-soft);
  color:var(--green-deep);
}
.accordion-custom .accordion-button:hover{background:#F1FAEE}
.accordion-custom .accordion-button:focus{box-shadow:0 0 0 3px rgba(123,191,106,.2)}
.accordion-custom .accordion-button:after{filter:hue-rotate(90deg)}
.accordion-custom .accordion-body{
  color:var(--muted);
  font-size:.92rem;
  line-height:1.9;
  padding:0 1.5rem 1.5rem;
}
.accordion-custom .accordion-header{margin-bottom:0}

/* ===== 转化表单区 ===== */
.join-card{
  background:#fff;
  border:1px solid #D9EBD2;
  border-radius:24px;
  padding:2.4rem;
  box-shadow:0 18px 45px rgba(45,80,42,.08);
  max-width:760px;
  margin:0 auto;
}
.join-card-head{text-align:center}
.join-card .section-title{margin-bottom:.4rem}
.join-card .form-text-hint{color:var(--weak);font-size:.88rem;margin-bottom:1.8rem}
.form-label{font-weight:600;font-size:.9rem;margin-bottom:.45rem}
.form-control,.form-select{
  border-radius:12px;
  border:1px solid #DCE8D6;
  padding:.75rem 1rem;
  height:52px;
  background:#FBFCF9;
  font-size:.94rem;
  color:var(--ink);
}
.form-control:focus,.form-select:focus{
  border-color:var(--green);
  box-shadow:0 0 0 3px rgba(123,191,106,.18);
  background:#fff;
}
textarea.form-control{height:auto}
.form-privacy{
  font-size:.82rem;
  color:var(--weak);
  text-align:center;
  margin-top:.9rem;
  padding-top:.7rem;
  border-top:1px dashed #D4E5CE;
}
@media(max-width:576px){
  .join-card{padding:1.5rem 1.25rem;border-radius:18px}
}

/* ===== 底部CTA ===== */
.cta-strip{
  background:linear-gradient(115deg,#1A2A1F 0%,#203627 60%,#2B4B31 100%);
  border-radius:26px;
  color:#fff;
  padding:2.8rem 2.5rem;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:2rem;
  flex-wrap:wrap;
  box-shadow:0 24px 50px rgba(22,44,25,.22);
}
.cta-strip h2{font-size:clamp(1.5rem,2.5vw,2rem);font-weight:700;margin:0 0 .5rem}
.cta-strip p{margin:0;color:rgba(231,240,228,.82);max-width:600px}

/* ===== Footer ===== */
.site-footer{
  background:var(--dark);
  color:rgba(231,240,228,.72);
  padding:3.5rem 0 1.8rem;
  margin-top:0;
}
.footer-brand{font-size:1.5rem;font-weight:800;color:#fff;display:flex;align-items:center;gap:.6rem;margin-bottom:.8rem}
.footer-brand i{color:var(--green)}
.footer-brand span{display:block;font-size:.78rem;font-weight:400;color:rgba(231,240,228,.55);letter-spacing:.02em}
.footer-about{
  font-size:.9rem;
  line-height:1.85;
  color:rgba(231,240,228,.68);
  margin-bottom:1rem;
}
.footer-heading{
  color:#fff;
  font-size:1rem;
  font-weight:700;
  margin-bottom:1rem;
}
.footer-links li{margin-bottom:.55rem}
.footer-links a{
  color:rgba(231,240,228,.68);
  font-size:.88rem;
  transition:all .2s ease;
  display:inline-flex;
  align-items:center;
  gap:.35rem;
}
.footer-links a:hover{color:var(--green);padding-left:4px}
.footer-note{
  border-top:1px solid rgba(231,240,228,.1);
  margin-top:2.5rem;
  padding-top:1.4rem;
  font-size:.78rem;
  color:rgba(231,240,228,.45);
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:.5rem;
}
.footer-note .domain-tech{font-variant-numeric:tabular-nums}

/* ===== 响应式断点补充 ===== */
@media (max-width:1199.98px){
  .container{max-width:960px}
  .hero-title{font-size:clamp(1.8rem,3.4vw,2.7rem)}
}
@media (max-width:991.98px){
  .container{max-width:720px}
  .faq-side{position:static;margin-bottom:1.4rem}
  .rec-side{position:static}
}
@media (max-width:767.98px){
  body{font-size:.94rem}
  .section{padding:3rem 0}
  .channel-nav a{padding:0 .7rem}
  .container{max-width:100%;padding-left:1.1rem;padding-right:1.1rem}
  .media-frame{aspect-ratio:16/10}
}
@media (max-width:575.98px){
  body{font-size:.92rem}
  .hero-title{font-size:1.7rem}
  .hero-section{padding:2.6rem 0}
  .brand-flex,.site-header.is-scrolled .brand-flex{height:auto}
  .metric-value{font-size:1.7rem}
  .compare-panel{padding:1.4rem 1.2rem}
  .cta-strip{padding:2rem 1.2rem;flex-direction:column;align-items:flex-start}
  .category-card .category-body{padding:1.2rem}
}
@media (min-width:1200px){
  .news-item .news-text{font-size:.97rem}
}

/* roulang page: category1 */
/* ===== roulang category page : custom design system ===== */
:root{
  --green:#7BBF6A;
  --green-deep:#5E9C50;
  --green-dark:#6AAA59;
  --green-soft:#EFF8EC;
  --green-mist:#F3F7F0;
  --orange:#F0A04B;
  --orange-dark:#DF8C36;
  --ink:#212A24;
  --muted:#5B675E;
  --weak:#849187;
  --dark:#1E2A21;
  --on-dark:#E7F0E4;
  --border:#E4EDE0;
  --white:#fff;
  --body-bg:#FBFCF9;
  --radius-xl:22px;
  --radius-lg:18px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow:0 4px 18px rgba(30,65,35,.06);
  --shadow-hover:0 14px 30px rgba(30,65,35,.11);
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
}
html{scroll-behavior:smooth}
*{box-sizing:border-box}
body{
  margin:0;
  background:var(--body-bg);
  color:var(--ink);
  font-family:var(--font);
  font-size:1rem;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
}
h1,h2,h3,h4,h5,h6{line-height:1.3;margin-top:0}
p{margin:0 0 1.25em}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s}
a:hover{color:inherit}
ul,ol{padding-left:0;list-style:none;margin-bottom:0}
button{font-family:inherit}
.container{max-width:1280px}
.section-pad{padding:clamp(3.5rem,7vw,6rem) 0}
.text-strong{font-weight:700}
.text-accent{color:var(--orange)}
.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:0;box-shadow:0 0 0 4px rgba(123,191,106,.25);
}
/* ===== 通用标题 ===== */
.eyebrow{
  display:inline-flex;align-items:center;gap:.4rem;
  background:var(--green-soft);color:var(--green-deep);
  border-radius:999px;padding:.3rem .95rem;
  font-size:.82rem;font-weight:600;letter-spacing:.02em;
}
.section-title{font-size:clamp(1.55rem,3vw,2.3rem);font-weight:800;margin:.5rem 0 .8rem}
.section-lead{max-width:800px;color:var(--muted);font-size:1rem}
.weak-note{color:var(--weak);font-size:.88rem}
/* ===== Header 双层导航 ===== */
.site-header{
  position:sticky;top:0;z-index:1080;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(7px);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 22px rgba(30,42,33,.08)}
.nav-brand-row{
  height:72px;border-bottom:1px solid rgba(228,237,224,.7);
  transition:height .2s;
}
.brand-flex{height:72px;display:flex;align-items:center;justify-content:space-between;gap:1rem}
.site-logo{display:inline-flex;align-items:center;gap:.75rem}
.logo-mark{
  width:44px;height:44px;border-radius:13px;flex:0 0 auto;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--green);color:#fff;font-size:1.35rem;
  box-shadow:0 6px 12px rgba(123,191,106,.3);
}
.logo-text{font-size:1.38rem;font-weight:800;line-height:1.18;color:var(--ink);letter-spacing:.01em}
.logo-text small{display:block;font-size:.72rem;font-weight:500;color:var(--weak);letter-spacing:.04em}
.header-quick{display:flex;align-items:center;gap:.15rem;color:var(--muted);font-size:.9rem}
.header-quick a{padding:.55rem .85rem;border-radius:999px}
.header-quick a:hover{background:var(--green-soft);color:var(--green-deep)}
.header-quick .quick-icon{padding:.35rem .7rem;font-size:1rem}
.nav-channel-row{
  background:rgba(255,255,255,.85);
  border-bottom:1px solid var(--border);
  transition:background .25s;
}
.channel-flex{
  min-height:48px;display:flex;align-items:center;justify-content:space-between;gap:1rem;
  transition:min-height .25s;
}
.channel-nav{height:100%;display:flex;align-items:stretch}
.channel-nav .nav-link{
  display:inline-flex;align-items:center;padding:0 1.15rem;
  font-size:.95rem;font-weight:600;color:var(--muted);
  border-bottom:3px solid transparent;margin-bottom:-1px;
  white-space:nowrap;transition:color .2s,background .2s;
}
.channel-nav .nav-link:hover{color:var(--green-deep);background:var(--green-mist)}
.channel-nav .nav-link.active{color:var(--green-deep);border-bottom-color:var(--green)}
.site-header.is-scrolled .nav-brand-row{display:none}
.site-header.is-scrolled .channel-flex{min-height:60px}
.site-header.is-scrolled .channel-nav .nav-link{height:60px}
.site-header:not(.is-scrolled) .mini-logo{display:none}
.mini-logo{display:inline-flex;align-items:center;gap:.5rem;font-weight:800;font-size:1.2rem;color:var(--ink);white-space:nowrap}
.mini-logo i{color:var(--green)}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--border);
  background:#fff;border-radius:12px;align-items:center;justify-content:center;
  font-size:1.3rem;color:var(--ink);cursor:pointer;transition:background .2s;
}
.nav-toggle:hover{background:var(--green-soft)}
.mobile-nav{
  display:none;flex-direction:column;background:#fff;
  border-top:1px solid var(--border);border-bottom:1px solid var(--border);
  padding:.7rem 1.2rem 1.1rem;
}
.mobile-nav.open{display:flex}
.mobile-nav a{padding:.85rem .6rem;font-weight:600;border-radius:12px;color:var(--muted)}
.mobile-nav a:hover,.mobile-nav a.active{background:var(--green-soft);color:var(--green-deep)}
/* ===== 按钮体系 ===== */
.btn{
  border-radius:12px;font-weight:600;padding:.8rem 1.8rem;
  display:inline-flex;align-items:center;justify-content:center;gap:.55rem;
  border:1.5px solid transparent;transition:all .22s ease;min-height:44px;
}
.btn-lg{padding:.95rem 2.2rem;font-size:1.02rem}
.btn-main{background:var(--green);color:#fff;border-color:var(--green)}
.btn-main:hover,.btn-main:active{background:var(--green-deep);color:#fff;border-color:var(--green-deep)}
.btn-accent{background:var(--orange);color:#fff;border-color:var(--orange)}
.btn-accent:hover,.btn-accent:active{background:var(--orange-dark);color:#fff;border-color:var(--orange-dark)}
.btn-ghost{background:transparent;border-color:rgba(123,191,106,.85);color:var(--green)}
.btn-ghost:hover{background:var(--green-soft);border-color:var(--green);color:var(--green-deep)}
/* ===== 分类小横幅 ===== */
.category-banner{
  position:relative;
  background:
    linear-gradient(120deg,rgba(25,40,31,.93),rgba(31,52,40,.82)),
    url("/assets/images/backpic/back-2.jpg") center/cover no-repeat;
  color:var(--on-dark);
  padding:clamp(3rem,5.5vw,4.5rem) 0;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.breadcrumb-cat{display:flex;align-items:center;gap:.5rem;color:var(--weak);font-size:.9rem;margin-bottom:1rem;flex-wrap:wrap}
.breadcrumb-cat a{color:rgba(231,240,228,.78)}
.breadcrumb-cat a:hover{color:var(--green)}
.breadcrumb-cat i{font-size:.7rem}
.banner-headline{
  font-size:clamp(1.9rem,4.2vw,3.1rem);font-weight:800;line-height:1.2;
  max-width:820px;margin-bottom:1rem;
}
.banner-headline .gradient-word{
  color:var(--green);
}
.banner-sub-text{
  max-width:760px;color:rgba(231,240,228,.78);font-size:1rem;line-height:1.85;
}
.banner-tags{
  margin-top:1.5rem;display:flex;gap:.6rem;flex-wrap:wrap;
}
.banner-tags span{
  display:inline-flex;align-items:center;gap:.35rem;
  background:rgba(123,191,106,.16);border:1px solid rgba(123,191,106,.3);
  color:var(--on-dark);font-size:.82rem;font-weight:500;
  padding:.35rem .85rem;border-radius:999px;
}
/* ===== 数据条 ===== */
.metrics-strip{
  background:var(--green-mist);
  border-bottom:1px solid var(--border);
  padding:1.6rem 0;
}
.metrics-row{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}
.metric-card{
  display:flex;align-items:center;gap:1rem;
  background:var(--white);border:1px solid rgba(228,237,224,.8);
  border-radius:16px;padding:1.05rem 1.15rem;box-shadow:var(--shadow);
}
.metric-icon{
  width:48px;height:48px;border-radius:14px;flex:0 0 auto;
  background:var(--green-soft);color:var(--green-deep);font-size:1.3rem;
  display:flex;align-items:center;justify-content:center;
}
.metric-num{font-size:1.45rem;font-weight:800;color:var(--ink);line-height:1.2}
.metric-num em{font-style:normal;color:var(--orange);font-weight:800}
.metric-label{font-size:.82rem;color:var(--weak);margin-top:.1rem}
/* ===== 筛选条 ===== */
.filter-bar{background:var(--white);border-bottom:1px solid var(--border);padding:.9rem 0}
.filter-wrap{display:flex;align-items:center;gap:.6rem;flex-wrap:wrap}
.filter-label{
  color:var(--muted);font-size:.9rem;font-weight:600;
  display:inline-flex;align-items:center;gap:.4rem;margin-right:.3rem;
}
.chip-filter{
  min-height:44px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:999px;padding:.5rem 1.25rem;font-size:.88rem;font-weight:600;
  color:var(--muted);background:var(--green-mist);border:1px solid transparent;
  transition:all .2s;
}
.chip-filter:hover{color:var(--green-deep);background:var(--green-soft)}
.chip-filter.active{background:var(--green);color:#fff;border-color:var(--green)}
.chip-filter i{margin-right:.3rem;font-size:.9rem}
/* ===== 瀑布网格区域 ===== */
.video-card{
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius-lg);
  overflow:hidden;display:flex;flex-direction:column;height:100%;
  box-shadow:var(--shadow);transition:transform .25s ease,box-shadow .25s ease,border-color .25s;
}
.video-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(123,191,106,.45)}
.media-frame{
  aspect-ratio:16/10;overflow:hidden;position:relative;
  background:linear-gradient(145deg,var(--green-soft),var(--green-mist));
}
.media-frame img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.video-card:hover .media-frame img{transform:scale(1.04)}
.play-hover{
  position:absolute;right:12px;bottom:12px;width:38px;height:38px;border-radius:50%;
  background:rgba(255,255,255,.96);color:var(--green-deep);font-size:.95rem;
  display:flex;align-items:center;justify-content:center;
  opacity:0;transform:translateY(6px);transition:all .25s;
  box-shadow:0 8px 16px rgba(30,42,33,.22);
}
.video-card:hover .play-hover{opacity:1;transform:translateY(0)}
.video-card .card-body-flex{padding:1.25rem 1.25rem 1.1rem;display:flex;flex-direction:column;flex:1}
.video-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:.8rem;font-size:.75rem;color:var(--weak);margin-bottom:.6rem;
}
.video-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--weak)}
.video-meta i{color:var(--green)}
.video-card-title{
  font-size:1.06rem;font-weight:700;line-height:1.5;margin-bottom:.55rem;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.video-card-summary{
  color:var(--muted);font-size:.9rem;line-height:1.7;margin-bottom:1rem;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-tag-row{display:flex;flex-wrap:wrap;gap:.45rem;margin-top:auto}
.video-tag{
  font-size:.75rem;padding:.18rem .7rem;border-radius:999px;font-weight:500;
  background:var(--green-soft);color:var(--green-deep);
}
.video-tag.hot{background:rgba(240,160,75,.15);color:#B96F1D}
/* ===== 分类指引区 ===== */
.insight-panel{
  background:var(--dark);color:var(--on-dark);
  border-radius:var(--radius-xl);
  padding:clamp(1.8rem,4vw,3rem);
  position:relative;overflow:hidden;
}
.insight-panel::after{
  content:"";position:absolute;right:-90px;top:-90px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(123,191,106,.35),transparent 65%);
}
.insight-grid{display:grid;grid-template-columns:280px 1fr;gap:1.5rem;align-items:start}
.anchor-list{
  background:rgba(255,255,255,.04);border:1px solid rgba(231,240,228,.12);
  border-radius:18px;padding:.8rem;
}
.anchor-list a{
  display:flex;align-items:center;gap:.75rem;padding:.8rem .85rem;color:rgba(231,240,228,.82);
  border-radius:12px;font-size:.92rem;font-weight:500;
}
.anchor-list a:hover,.anchor-list a.active{background:rgba(123,191,106,.18);color:#fff}
.anchor-list a i{color:var(--green)}
.insight-heading{font-size:1.35rem;font-weight:700;margin-bottom:.6rem;color:#fff}
.insight-copy{color:rgba(231,240,228,.75);font-size:.93rem;line-height:1.8}
.insight-copy + .insight-copy{margin-top:1rem}
.insight-note{
  display:inline-flex;align-items:center;gap:.5rem;font-size:.85rem;
  background:rgba(240,160,75,.15);border:1px solid rgba(240,160,75,.25);
  color:var(--orange);border-radius:12px;padding:.6rem 1rem;margin-top:1rem;
}
/* ===== 横滑资源条 ===== */
.hot-track-wrap{position:relative}
.hot-track{
  display:flex;gap:1rem;overflow-x:auto;scroll-behavior:smooth;
  scrollbar-width:none;padding:.3rem .3rem 1rem;
}
.hot-track::-webkit-scrollbar{display:none}
.hot-card{
  flex:0 0 210px;background:#fff;border:1px solid var(--border);
  border-radius:16px;overflow:hidden;transition:all .22s;
}
.hot-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.hot-card .media-frame{aspect-ratio:16/10}
.hot-card-body{padding:.75rem .85rem}
.hot-card-body strong{
  font-size:.9rem;display:block;white-space:nowrap;text-overflow:ellipsis;overflow:hidden;
}
.hot-card-body small{color:var(--weak);font-size:.75rem}
.scroll-btn{
  width:46px;height:46px;border:1px solid var(--border);background:#fff;
  border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  font-size:1.1rem;color:var(--ink);transition:all .2s;
}
.scroll-btn:hover{background:var(--green);border-color:var(--green);color:#fff}
/* ===== FAQ ===== */
.faq-bg{background:var(--green-mist)}
.faq-card{
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);overflow:hidden;
}
.accordion-item{
  background:#fff;border:0;border-bottom:1px solid var(--border);
}
.accordion-item:last-child{border-bottom:0}
.accordion-button{
  background:#fff !important;color:var(--ink) !important;font-weight:700;font-size:.99rem;
  box-shadow:none !important;padding:1.1rem 1.3rem;
}
.accordion-button::after{
  background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%235E9C50'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
  transition:transform .2s;
}
.accordion-button:not(.collapsed){color:var(--green-deep) !important}
.accordion-button:not(.collapsed)::after{filter:none}
.accordion-body{color:var(--muted);font-size:.93rem;line-height:1.85}
/* ===== CTA 表单 ===== */
.cta-box{
  background:var(--green-soft);border:1px solid rgba(123,191,106,.45);
  border-radius:26px;padding:clamp(1.6rem,4vw,2.8rem);
  box-shadow:0 10px 30px rgba(30,65,35,.06);max-width:760px;margin:0 auto;
}
.form-control,.form-select{
  min-height:48px;border:1px solid var(--border);border-radius:12px;
  font-size:.95rem;background:#fff;color:var(--ink);padding:.65rem 1rem;
  box-shadow:none;
}
.form-control:focus,.form-select:focus{border-color:var(--green);box-shadow:0 0 0 4px rgba(123,191,106,.2)}
.form-label{font-weight:600;font-size:.9rem;color:var(--ink)}
.form-helper{font-size:.78rem;color:var(--weak);line-height:1.6;margin-top:.5rem}
.form-check-input:checked{background-color:var(--green);border-color:var(--green)}
.form-check-input:focus{box-shadow:0 0 0 4px rgba(123,191,106,.2);border-color:var(--green)}
/* ===== Footer ===== */
.site-footer{
  background:var(--dark);color:var(--on-dark);
  padding:4rem 0 0;
}
.footer-brand{
  display:flex;align-items:center;gap:.7rem;
  font-size:1.35rem;font-weight:800;margin-bottom:.85rem;
}
.footer-brand i{
  width:40px;height:40px;border-radius:12px;background:var(--green);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:1.1rem;
}
.footer-brand span{
  display:block;font-size:.78rem;color:rgba(231,240,228,.58);font-weight:500;
}
.footer-about{
  color:rgba(231,240,228,.68);font-size:.9rem;line-height:1.85;max-width:330px;
}
.footer-heading{
  font-size:.95rem;font-weight:700;color:#fff;margin-bottom:1rem;
  padding-bottom:.6rem;border-bottom:1px solid rgba(123,191,106,.3);
}
.footer-links li{margin-bottom:.5rem}
.footer-links a{
  color:rgba(231,240,228,.7);font-size:.9rem;
  display:inline-flex;align-items:center;gap:.4rem;
}
.footer-links a:hover{color:var(--green);padding-left:4px}
.footer-links a i{font-size:.68rem;opacity:.7}
.footer-note{
  border-top:1px solid rgba(231,240,228,.1);
  margin-top:2.5rem;padding:1.2rem 0;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:.5rem;
  color:rgba(231,240,228,.55);font-size:.85rem;
}
.domain-tech{color:rgba(231,240,228,.42);font-size:.8rem}
/* ===== 响应式 ===== */
@media (min-width:992px){
  .nav-brand-row{display:block}
  .channel-nav{display:flex}
  .nav-toggle{display:none}
  .mobile-nav{display:none !important}
}
@media (max-width:1399.98px){
  .content-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:1199.98px){
  .metrics-row{grid-template-columns:repeat(2,1fr)}
  .feed-grid{grid-template-columns:repeat(2,1fr)}
  .insight-grid{grid-template-columns:240px 1fr}
}
@media (max-width:991.98px){
  .nav-brand-row{display:none}
  .channel-flex{min-height:60px !important}
  .channel-nav{display:none}
  .mini-logo{display:inline-flex !important}
  .nav-toggle{display:inline-flex}
  .site-header:not(.is-scrolled) .mini-logo{display:inline-flex}
  .feed-grid{grid-template-columns:repeat(2,1fr)}
  .insight-grid{grid-template-columns:1fr}
  .anchor-list{
    display:flex;flex-wrap:wrap;gap:.3rem;
  }
  .anchor-list a{flex:1 1 140px}
}
@media (max-width:767.98px){
  .metrics-row{grid-template-columns:repeat(2,1fr)}
  .metric-card{padding:.85rem}
  .feed-grid{grid-template-columns:1fr}
  .banner-headline{font-size:1.85rem}
}
@media (max-width:575.98px){
  body{font-size:.95rem}
  .header-quick .quick-text{display:none}
  .header-quick a{padding:.45rem .65rem}
  .logo-text{font-size:1.2rem}
  .metrics-row{grid-template-columns:repeat(2,1fr);gap:.75rem}
  .metric-num{font-size:1.2rem}
  .filter-wrap{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none}
  .filter-wrap::-webkit-scrollbar{display:none}
  .chip-filter{min-height:42px;flex:0 0 auto}
  .video-card-title{font-size:1rem}
  .cta-box{border-radius:18px}
  .footer-note{flex-direction:column}
}

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}