/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --brand:#123D2E;
  --brand-deep:#0A241B;
  --brand-soft:#E8F0E9;
  --accent:#C7F04A;
  --accent-ink:#22320A;
  --warn:#E4551F;
  --paper:#F7F5F0;
  --card:#FFFFFF;
  --ink:#14171A;
  --ink-soft:#3D423F;
  --muted:#7A756C;
  --line:#E4DFD4;
  --r-s:8px;
  --r-m:14px;
  --r-l:20px;
  --sh-1:0 1px 2px rgba(20,23,26,.05);
  --sh-2:0 22px 44px -26px rgba(18,61,46,.32);
  --fast:160ms;
  --base:220ms;
  --slow:420ms;
  --ease:cubic-bezier(.22,.7,.2,1);
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:136px}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
table{border-collapse:collapse;width:100%}
::selection{background:var(--accent);color:var(--accent-ink)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px;
}

/* ============ 容器与通用 ============ */
.grid-container{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
@media (min-width:1440px){.grid-container{max-width:1280px}}

.section{padding:104px 0}
.section--tight{padding:80px 0}
.section--dark{background:var(--brand);color:#fff}
.section--soft{background:var(--brand-soft)}

.eyebrow{
  font-size:12px;font-weight:700;letter-spacing:.2em;text-transform:uppercase;
  color:var(--muted);margin:0 0 14px;
}
.section--dark .eyebrow{color:rgba(199,240,74,.85)}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:32px;
  margin-bottom:44px;flex-wrap:wrap;
}
.section-head h2{
  font-size:clamp(24px,3vw,38px);line-height:1.2;font-weight:900;letter-spacing:-.02em;
}
.section-head .section-desc{
  font-size:15px;color:var(--muted);max-width:360px;line-height:1.75;margin:0;
}
.section--dark .section-head .section-desc{color:rgba(255,255,255,.68)}
.lead{font-size:16px;color:var(--ink-soft);line-height:1.85;max-width:640px}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:14px;
  color:var(--brand);border-bottom:1px solid rgba(18,61,46,.3);padding-bottom:2px;
  transition:color var(--base) var(--ease),border-color var(--base) var(--ease);
}
.text-link:hover{color:var(--accent-ink);border-color:var(--accent);background:var(--accent)}
.section--dark .text-link{color:var(--accent);border-color:rgba(199,240,74,.5)}
.section--dark .text-link:hover{color:var(--accent-ink);background:var(--accent)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:999px;
  font-size:15px;font-weight:700;line-height:1;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;text-align:center;
  transition:background var(--base) var(--ease),color var(--base) var(--ease),
             border-color var(--base) var(--ease),box-shadow var(--base) var(--ease),
             transform var(--fast) var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn-solid{background:var(--brand);color:#fff;border-color:var(--brand)}
.btn-solid:hover{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);box-shadow:var(--sh-2)}
.btn-accent{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.btn-accent:hover{background:#fff;color:var(--brand);border-color:#fff;box-shadow:var(--sh-2)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);background:rgba(199,240,74,.08)}
.btn-outline{background:#fff;color:var(--brand);border-color:var(--line)}
.btn-outline:hover{border-color:var(--brand);background:var(--brand-soft)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-block{width:100%}

/* ============ 标签 ============ */
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:700;
  letter-spacing:.02em;white-space:nowrap;
}
.tag--warn{background:rgba(228,85,31,.1);color:var(--warn)}
.tag--dark{background:rgba(255,255,255,.12);color:#fff}
.tag--accent{background:var(--accent);color:var(--accent-ink)}

/* ============ 页头 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,245,240,.94);
  backdrop-filter:saturate(180%) blur(12px);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
}
.header-top-inner{
  display:flex;align-items:center;justify-content:space-between;gap:20px;height:70px;
}
.logo{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.logo-mark{
  width:26px;height:26px;border-radius:7px;background:var(--brand);
  position:relative;overflow:hidden;flex:0 0 auto;transform:rotate(45deg);
}
.logo-mark::after{
  content:"";position:absolute;right:-8px;bottom:-8px;width:22px;height:22px;
  border-radius:50%;border:2px solid var(--accent);
}
.logo-text{
  font-size:17px;font-weight:900;color:var(--brand);letter-spacing:-.01em;line-height:1.2;
}
.logo-text small{
  display:block;font-size:10px;font-weight:700;letter-spacing:.22em;
  color:var(--muted);text-transform:uppercase;line-height:1.4;
}
.header-actions{display:flex;align-items:center;gap:12px}
.header-search{
  display:flex;align-items:center;gap:8px;height:42px;padding:0 8px 0 16px;
  border:1px solid var(--line);border-radius:999px;background:#fff;
  width:0;opacity:0;overflow:hidden;pointer-events:none;
  transition:width var(--base) var(--ease),opacity var(--base) var(--ease);
}
.header-search.is-open{width:250px;opacity:1;pointer-events:auto}
.header-search input{
  border:0;background:transparent;outline:none;width:100%;font-size:14px;height:100%;
}
.header-search input::placeholder{color:var(--muted)}
.header-search button{
  border:0;background:var(--brand);color:#fff;width:30px;height:30px;border-radius:50%;
  display:grid;place-items:center;cursor:pointer;flex:0 0 auto;transition:background var(--base) var(--ease);
}
.header-search button:hover{background:var(--accent);color:var(--accent-ink)}
.icon-btn{
  width:42px;height:42px;border-radius:50%;border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;cursor:pointer;color:var(--brand);
  transition:border-color var(--base) var(--ease),background var(--base) var(--ease);
}
.icon-btn:hover{border-color:var(--brand);background:var(--brand-soft)}
.icon-btn svg{width:18px;height:18px}

.site-header .channel-bar{border-top:1px solid var(--line);height:54px;display:flex;align-items:center}
.channel-scroll{
  display:flex;align-items:center;gap:8px;height:100%;
  overflow-x:auto;scroll-snap-type:x proximity;
  -ms-overflow-style:none;scrollbar-width:none;
  padding:2px 0;
}
.channel-scroll::-webkit-scrollbar{display:none}
.pill{
  flex:0 0 auto;scroll-snap-align:start;
  display:inline-flex;align-items:center;height:36px;padding:0 18px;border-radius:999px;
  border:1px solid var(--line);background:#fff;color:var(--ink-soft);
  font-size:14px;font-weight:500;white-space:nowrap;
  transition:background var(--base) var(--ease),color var(--base) var(--ease),
             border-color var(--base) var(--ease),transform var(--fast) var(--ease);
}
.pill:hover{border-color:rgba(18,61,46,.35);color:var(--brand);background:var(--brand-soft)}
.pill.is-active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:700}
.pill:active{transform:translateY(1px)}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;background:var(--brand-deep);min-height:600px;display:flex;align-items:center}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.hero-overlay{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(10,36,27,.93) 0%,rgba(10,36,27,.80) 46%,rgba(10,36,27,.56) 100%);
}
.hero-grid{
  position:absolute;top:0;right:0;width:46%;height:100%;opacity:.06;
  background-image:linear-gradient(rgba(255,255,255,.9) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:32px 32px;pointer-events:none;
}
.hero-cut{
  position:absolute;right:8%;top:-40px;width:180px;height:180px;
  background:var(--accent);opacity:.14;transform:rotate(45deg);
  border-radius:24px;pointer-events:none;
}
.hero-inner{position:relative;z-index:2;padding-top:96px;padding-bottom:96px;width:100%}
.hero-copy{max-width:660px}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;font-weight:700;letter-spacing:.2em;text-transform:uppercase;
  color:var(--accent);margin-bottom:22px;
}
.hero-eyebrow::before{content:"";width:26px;height:1px;background:var(--accent);display:block}
.hero h1{
  font-size:clamp(30px,4.4vw,54px);line-height:1.18;font-weight:900;
  letter-spacing:-.025em;color:#fff;margin-bottom:22px;
}
.hero-sub{
  font-size:17px;line-height:1.8;color:rgba(255,255,255,.78);max-width:520px;margin-bottom:36px;
}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap}
.hero-metrics{
  display:flex;flex-wrap:wrap;gap:0;margin-top:34px;padding-top:24px;
  border-top:1px solid rgba(255,255,255,.16);
}
.hero-metrics li{padding:0 30px;border-left:1px solid rgba(255,255,255,.16)}
.hero-metrics li:first-child{padding-left:0;border-left:0}
.hero-metrics b{
  display:block;font-family:var(--mono);font-size:28px;font-weight:700;line-height:1.2;
  color:var(--accent);font-variant-numeric:tabular-nums;
}
.hero-metrics span{font-size:13px;color:rgba(255,255,255,.66);letter-spacing:.02em}

/* ============ 指标看板 ============ */
.metrics-board{position:relative}
.metric-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-m);
  padding:28px 24px;height:100%;display:flex;flex-direction:column;
  transition:transform var(--base) var(--ease),box-shadow var(--base) var(--ease),border-color var(--base) var(--ease);
}
.metric-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(18,61,46,.25)}
.metric-card .num{
  font-family:var(--mono);font-size:clamp(38px,5vw,58px);font-weight:700;line-height:1;
  letter-spacing:-.03em;color:var(--brand);font-variant-numeric:tabular-nums;
}
.metric-card .num em{font-style:normal;font-size:.4em;margin-left:6px;color:var(--muted);font-weight:700}
.metric-card.is-accent .num{color:var(--accent-ink);background:var(--accent);border-radius:10px;padding:6px 12px;align-self:flex-start}
.metric-card .label{font-size:16px;font-weight:700;margin-top:18px}
.metric-card hr{border:0;border-top:1px solid var(--line);margin:16px 0}
.metric-card .note{font-size:13px;line-height:1.7;color:var(--muted);margin:0}
.board-foot{
  margin-top:22px;text-align:right;font-size:12px;color:var(--muted);font-family:var(--mono);letter-spacing:.02em;
}

/* ============ 频道矩阵 ============ */
.matrix{display:grid;grid-template-columns:minmax(0,1.62fr) minmax(0,1fr);gap:24px;align-items:stretch}
.feature-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform var(--base) var(--ease),box-shadow var(--base) var(--ease);
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.feature-card figure{margin:0;position:relative;overflow:hidden}
.feature-card figure img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform var(--slow) var(--ease)}
.feature-card:hover figure img{transform:scale(1.03)}
.feature-card .body{padding:30px 30px 32px;display:flex;flex-direction:column;flex:1}
.feature-card h3{font-size:23px;font-weight:900;line-height:1.3;margin:14px 0 12px;letter-spacing:-.01em}
.feature-card .body p{font-size:15px;line-height:1.8;color:var(--ink-soft);margin-bottom:22px}
.feature-card .text-link{margin-top:auto;align-self:flex-start}

.rowlist{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);
  overflow:hidden;display:flex;flex-direction:column;
}
.rowlist a{
  display:grid;grid-template-columns:auto 1fr auto;gap:16px;align-items:center;
  padding:22px 24px;border-bottom:1px solid var(--line);
  transition:background var(--base) var(--ease);
}
.rowlist a:last-child{border-bottom:0}
.rowlist a:hover{background:var(--brand-soft)}
.rowlist .idx{
  font-family:var(--mono);font-size:13px;font-weight:700;color:var(--warn);letter-spacing:.04em;
}
.row-text strong{display:block;font-size:16px;font-weight:700;line-height:1.4}
.row-text em{display:block;font-style:normal;font-size:13px;color:var(--muted);margin-top:4px;line-height:1.6}
.row-arrow{
  color:var(--brand);font-size:16px;transition:transform var(--base) var(--ease);
}
.rowlist a:hover .row-arrow{transform:translateX(4px)}

/* ============ 结果对比 ============ */
.compare-list{display:flex;flex-direction:column;gap:12px}
.compare-row{display:grid;grid-template-columns:minmax(0,1fr) 56px minmax(0,1fr);align-items:center;gap:0}
.compare-cell{
  border-radius:var(--r-m);padding:20px 24px;font-size:15px;line-height:1.6;
  display:flex;align-items:center;gap:10px;min-height:74px;
}
.compare-cell.before{background:#fff;border:1px solid var(--line);color:var(--ink-soft)}
.compare-cell.after{background:var(--brand);color:#fff;font-weight:500}
.compare-cell.after b{
  font-family:var(--mono);color:var(--accent);font-size:15px;font-weight:700;flex:0 0 auto;
}
.compare-cell.before span{color:var(--muted);font-family:var(--mono);font-size:14px;flex:0 0 auto}
.compare-arrow{
  display:grid;place-items:center;color:var(--brand);font-size:18px;
}
.compare-note{
  margin-top:26px;font-size:13px;color:var(--muted);line-height:1.8;
  border-left:3px solid var(--accent);padding-left:14px;max-width:760px;
}

/* ============ 最新信息 ============ */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.post-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-m);
  overflow:hidden;height:100%;
  transition:transform var(--base) var(--ease),box-shadow var(--base) var(--ease),border-color var(--base) var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(18,61,46,.25)}
.post-link{display:flex;flex-direction:column;height:100%}
.post-cover{overflow:hidden;background:var(--brand-soft)}
.post-cover img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform var(--slow) var(--ease)}
.post-card:hover .post-cover img{transform:scale(1.04)}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;gap:10px}
.post-body h3{
  font-size:17px;font-weight:700;line-height:1.45;letter-spacing:-.01em;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-body p{
  font-size:14px;line-height:1.75;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-family:var(--mono);font-size:12.5px;color:var(--muted);letter-spacing:.02em;
}
.post-arrow{color:var(--brand);font-size:15px;transition:transform var(--base) var(--ease)}
.post-card:hover .post-arrow{transform:translateX(4px)}
.empty-state{
  grid-column:1 / -1;min-height:240px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:14px;text-align:center;
  border:1px dashed var(--line);border-radius:var(--r-l);background:#fff;padding:40px 24px;
}
.empty-state svg{width:52px;height:52px;color:var(--line)}
.empty-state p{font-size:15px;color:var(--muted);margin:0}

/* ============ 上手步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;counter-reset:step}
.steps li{
  position:relative;padding-top:26px;border-top:1px solid rgba(255,255,255,.2);
  transition:border-color var(--base) var(--ease);
}
.steps li::before{
  content:"";position:absolute;top:-5px;left:0;width:9px;height:9px;border-radius:50%;
  background:var(--accent);transition:transform var(--base) var(--ease);
}
.steps li:hover{border-top-color:var(--accent)}
.steps li:hover::before{transform:scale(1.25)}
.step-num{
  font-family:var(--mono);font-size:13px;font-weight:700;color:var(--accent);
  letter-spacing:.1em;display:block;margin-bottom:14px;
}
.steps h3{font-size:19px;font-weight:700;line-height:1.4;margin-bottom:10px}
.steps p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.7);margin:0}

/* ============ FAQ ============ */
.faq-list{max-width:900px;margin:0 auto;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:grid;grid-template-columns:52px 1fr auto;gap:16px;align-items:center;
  background:transparent;border:0;cursor:pointer;text-align:left;
  padding:22px 8px;min-height:68px;font-size:17px;font-weight:700;line-height:1.5;
  color:var(--ink);transition:color var(--base) var(--ease),background var(--base) var(--ease);
}
.faq-q:hover{color:var(--brand);background:rgba(232,240,233,.5)}
.faq-q .faq-idx{font-family:var(--mono);font-size:13px;color:var(--muted);font-weight:500}
.faq-sign{
  width:26px;height:26px;position:relative;flex:0 0 auto;
  transition:transform var(--base) var(--ease);
}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
}
.faq-sign::before{left:50%;top:4px;width:2px;height:18px;transform:translateX(-50%)}
.faq-sign::after{top:50%;left:4px;height:2px;width:18px;transform:translateY(-50%)}
.faq-item.is-open .faq-sign{transform:rotate(45deg)}
.faq-item.is-open .faq-q{color:var(--brand)}
.faq-a{
  overflow:hidden;max-height:0;transition:max-height var(--slow) var(--ease);
}
.faq-a-inner{
  max-width:720px;padding:0 8px 26px 68px;font-size:15px;line-height:1.85;color:var(--ink-soft);
}

/* ============ 转化表单 ============ */
.convert{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:48px;align-items:start}
.form-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-l);padding:34px;
}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:13px;color:var(--muted);font-weight:500}
.field label .req{color:var(--warn);margin-left:4px;font-size:12px}
.field input,.field select,.field textarea{
  height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-s);
  background:#fff;outline:none;font-size:15px;width:100%;
  transition:border-color var(--base) var(--ease),box-shadow var(--base) var(--ease);
}
.field textarea{height:auto;min-height:120px;padding:13px 14px;line-height:1.7;resize:vertical}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--accent);box-shadow:0 0 0 3px rgba(199,240,74,.28);
}
.field input.has-error,.field textarea.has-error{border-color:var(--warn)}
.field .err{font-size:13px;color:var(--warn);display:none}
.field .err.is-shown{display:block}
.checkbox{
  grid-column:1 / -1;display:flex;align-items:flex-start;gap:10px;
  font-size:13px;color:var(--muted);line-height:1.7;
}
.checkbox input{width:18px;height:18px;flex:0 0 auto;margin-top:3px;accent-color:var(--brand)}
.form-foot{grid-column:1 / -1;display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.form-tip{font-size:13px;color:var(--muted)}
.form-ok{
  grid-column:1 / -1;display:none;background:var(--brand-soft);border:1px solid rgba(18,61,46,.2);
  border-radius:var(--r-s);padding:14px 18px;font-size:14px;color:var(--brand);
}
.form-ok.is-shown{display:block}

.trust{display:flex;flex-direction:column;gap:22px}
.trust h3{font-size:20px;font-weight:900;line-height:1.4;letter-spacing:-.01em}
.trust > p{font-size:15px;line-height:1.85;color:var(--ink-soft)}
.trust ul{display:flex;flex-direction:column;gap:16px;margin-top:6px}
.trust li{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:start}
.trust .dot{
  width:32px;height:32px;border-radius:50%;background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-family:var(--mono);font-size:13px;font-weight:700;flex:0 0 auto;
}
.trust li strong{display:block;font-size:15px;font-weight:700;margin-bottom:4px}
.trust li span{font-size:13.5px;color:var(--muted);line-height:1.7;display:block}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--brand-deep);color:#c6d2cb;padding-top:66px;
  border-top:2px solid var(--accent);margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.15fr;gap:40px;padding-bottom:48px}
.footer-brand .logo-text{color:#fff}
.footer-brand .logo-text small{color:rgba(255,255,255,.45)}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);margin-top:18px;max-width:300px}
.footer-col h4{
  font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--accent);margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{
  font-size:14px;color:rgba(255,255,255,.72);border-bottom:1px solid transparent;
  transition:color var(--base) var(--ease),border-color var(--base) var(--ease);
  display:inline-block;
}
.footer-col a:hover{color:var(--accent);border-bottom-color:var(--accent)}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);margin-bottom:10px}
.footer-col p b{color:#fff;font-weight:700}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom .mono{font-family:var(--mono);letter-spacing:.02em}

/* ============ 响应式 ============ */
@media (min-width:1440px){
  .section{padding:120px 0}
}
@media (max-width:1023px){
  .section{padding:80px 0}
  .matrix{grid-template-columns:minmax(0,1fr)}
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 24px}
  .convert{grid-template-columns:minmax(0,1fr);gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .hero{min-height:520px}
  .hero-inner{padding-top:76px;padding-bottom:76px}
}
@media (max-width:767px){
  html{scroll-padding-top:118px}
  .grid-container{padding-left:16px;padding-right:16px}
  .section{padding:60px 0}
  .header-top-inner{height:62px}
  .site-header .channel-bar{height:48px}
  .logo-text{font-size:15px}
  .logo-text small{display:none}
  .header-search.is-open{width:170px}
  .header-actions .btn-sm{display:none}
  .hero{min-height:auto}
  .hero-inner{padding-top:64px;padding-bottom:64px}
  .hero-metrics li{padding:0 18px}
  .hero-metrics b{font-size:22px}
  .section-head{margin-bottom:32px}
  .section-head .section-desc{max-width:none}
  .post-grid{grid-template-columns:minmax(0,1fr)}
  .compare-row{grid-template-columns:minmax(0,1fr);gap:8px}
  .compare-cell{min-height:0;padding:16px 18px;font-size:14px}
  .compare-arrow{transform:rotate(90deg);padding:2px 0}
  .compare-cell.after{order:3}
  .form-card{padding:24px 20px}
  .form-grid{grid-template-columns:minmax(0,1fr)}
  .faq-q{grid-template-columns:38px 1fr auto;font-size:15.5px;padding:18px 4px;gap:12px}
  .faq-a-inner{padding:0 4px 22px 54px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .rowlist a{padding:18px 18px}
  .feature-card .body{padding:24px 22px 26px}
  .steps{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:479px){
  .hero-btns .btn{width:100%}
  .hero-metrics{flex-direction:column;gap:14px}
  .hero-metrics li{padding:0;border-left:0;border-top:1px solid rgba(255,255,255,.14);padding-top:12px}
  .hero-metrics li:first-child{border-top:0;padding-top:0}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;animation-iteration-count:1 !important;
    transition-duration:.001ms !important;scroll-behavior:auto !important;
  }
  .metric-card:hover,.post-card:hover,.feature-card:hover{transform:none}
}

/* roulang page: article */
:root{
  --brand:#123D2E;
  --brand-deep:#0A241B;
  --brand-soft:#E8F0E9;
  --accent:#C7F04A;
  --accent-ink:#22320A;
  --warn:#E4551F;
  --paper:#F7F5F0;
  --card:#FFFFFF;
  --ink:#14171A;
  --ink-soft:#3D423F;
  --muted:#7A756C;
  --line:#E4DFD4;
  --r-s:8px;
  --r-m:14px;
  --r-l:20px;
  --sh-1:0 1px 2px rgba(20,23,26,.05);
  --sh-2:0 22px 44px -26px rgba(18,61,46,.32);
  --fast:160ms;
  --base:220ms;
  --slow:420ms;
  --ease:cubic-bezier(.22,.7,.2,1);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono","Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:120px}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block;border:0}
h1,h2,h3,h4,h5{margin:0;line-height:1.25;font-weight:800;color:var(--ink);letter-spacing:-.01em}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0}
a{color:var(--brand);text-decoration:none;transition:color var(--base) var(--ease),border-color var(--base) var(--ease),background-color var(--base) var(--ease)}
a:hover{color:var(--brand)}
button{font-family:inherit}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* 容器 */
.grid-container{max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.grid-container{max-width:1280px}}
@media (max-width:520px){.grid-container{padding:0 16px}}

/* 头部 */
.site-header{position:sticky;top:0;z-index:70;background:rgba(247,245,240,.97);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);transition:box-shadow var(--base) var(--ease)}
.site-header.is-scrolled{box-shadow:0 14px 34px -26px rgba(18,61,46,.6)}
.header-top{border-bottom:1px solid var(--line)}
.header-top-inner{display:flex;align-items:center;gap:18px;min-height:76px}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none}
.logo:hover{text-decoration:none}
.logo-mark{position:relative;width:32px;height:32px;flex:0 0 auto;border-radius:9px;background:var(--brand);overflow:hidden}
.logo-mark::after{content:"";position:absolute;left:7px;top:17px;width:18px;height:2px;background:var(--accent);transform:rotate(-45deg);transform-origin:center}
.logo-text{display:flex;flex-direction:column;font-size:17px;font-weight:900;line-height:1.2;color:var(--ink);letter-spacing:-.01em}
.logo-text small{font-size:11px;font-weight:500;letter-spacing:.14em;color:var(--muted);margin-top:3px}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.header-search{display:flex;align-items:center;height:40px;padding:0 5px 0 14px;background:#fff;border:1px solid var(--line);border-radius:999px;transition:border-color var(--base) var(--ease),box-shadow var(--base) var(--ease)}
.header-search input{border:0;background:transparent;height:100%;width:198px;font-size:14px;color:var(--ink);outline:none;font-family:inherit}
.header-search input::placeholder{color:var(--muted)}
.header-search button{display:grid;place-items:center;width:30px;height:30px;border:0;border-radius:999px;background:var(--brand);color:#fff;cursor:pointer;transition:background-color var(--base) var(--ease),color var(--base) var(--ease)}
.header-search button:hover{background:var(--accent);color:var(--accent-ink)}
.header-search:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(199,240,74,.28)}
.icon-btn{display:none;place-items:center;width:40px;height:40px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--ink);cursor:pointer}
.icon-btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round}
.icon-btn:hover{border-color:var(--brand);color:var(--brand)}

/* 频道行 */
.channel-bar{background:#fff;border-bottom:1px solid var(--line)}
.channel-scroll{display:flex;gap:8px;padding:10px 0;overflow-x:auto;scroll-snap-type:x proximity;-ms-overflow-style:none;scrollbar-width:none}
.channel-scroll::-webkit-scrollbar{display:none}
.pill{flex:0 0 auto;display:inline-flex;align-items:center;height:36px;padding:0 18px;border:1px solid var(--line);border-radius:999px;font-size:14px;color:var(--ink-soft);background:#fff;white-space:nowrap;scroll-snap-align:start;text-decoration:none;transition:background-color var(--base) var(--ease),border-color var(--base) var(--ease),color var(--base) var(--ease)}
.pill:hover{background:var(--brand-soft);border-color:rgba(18,61,46,.35);color:var(--brand);text-decoration:none}
.pill.is-active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}
.pill.is-active:hover{background:var(--brand-deep);color:#fff}
.pill:active{transform:translateY(1px)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border:1px solid transparent;border-radius:999px;font-size:15px;font-weight:600;line-height:1;cursor:pointer;text-decoration:none;font-family:inherit;transition:background-color var(--base) var(--ease),color var(--base) var(--ease),border-color var(--base) var(--ease),transform var(--base) var(--ease),box-shadow var(--base) var(--ease)}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-solid{background:var(--brand);color:#fff}
.btn-solid:hover{background:var(--accent);color:var(--accent-ink);box-shadow:var(--sh-2)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.45);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff}
.btn-line{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-line:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}

/* 文章头部 */
.article-hero{position:relative;background:var(--brand-deep) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;color:#fff;overflow:hidden}
.article-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(10,36,27,.88),rgba(10,36,27,.94))}
.article-hero::after{content:"";position:absolute;right:-60px;top:-40px;width:260px;height:260px;background:linear-gradient(135deg,rgba(199,240,74,.16),rgba(199,240,74,0));transform:rotate(45deg)}
.article-hero-inner{position:relative;z-index:2;max-width:880px;padding:44px 0 54px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.68);margin-bottom:20px}
.breadcrumb a{color:rgba(255,255,255,.86)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:rgba(255,255,255,.34)}
.breadcrumb .current{max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:rgba(255,255,255,.62)}
.hero-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-bottom:16px}
.chip{display:inline-flex;align-items:center;height:28px;padding:0 13px;border-radius:999px;font-size:13px;font-weight:600}
.chip-accent{background:var(--accent);color:var(--accent-ink)}
.hero-meta .mono{font-size:13px;color:rgba(255,255,255,.7)}
.article-hero h1{font-size:clamp(28px,4vw,44px);line-height:1.24;color:#fff;font-weight:900;letter-spacing:-.015em}
.hero-sub{margin:18px 0 0;max-width:640px;font-size:15.5px;line-height:1.85;color:rgba(255,255,255,.76)}

/* 文章布局 */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start;padding:56px 0 24px}
.article-main{min-width:0}
.article-body{background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);padding:42px 46px 46px;box-shadow:var(--sh-1);color:var(--ink-soft);font-size:16.5px;line-height:1.9;overflow-wrap:break-word}
.article-body > *:first-child{margin-top:0}
.article-body h2{font-size:clamp(21px,2.4vw,26px);color:var(--ink);margin:2em 0 .7em;padding-left:14px;border-left:3px solid var(--brand);line-height:1.4}
.article-body h3{font-size:19px;color:var(--ink);margin:1.7em 0 .6em;font-weight:700}
.article-body h4{font-size:17px;color:var(--ink);margin:1.5em 0 .5em}
.article-body p{margin:0 0 1.25em}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.35em}
.article-body ul li,.article-body ol li{margin-bottom:.55em}
.article-body img{border-radius:var(--r-m);margin:1.7em auto;width:100%;height:auto}
.article-body blockquote{margin:1.7em 0;padding:18px 22px;background:var(--brand-soft);border-left:3px solid var(--brand);border-radius:0 var(--r-s) var(--r-s) 0;color:var(--ink)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:1.7em 0}
.article-body th,.article-body td{border-bottom:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}
.article-body th{background:var(--brand-soft);color:var(--ink);font-weight:700}
.article-body tr:hover td{background:#FBFAF6}
.article-body code{font-family:var(--mono);font-size:.92em;background:#F1EFE9;border-radius:6px;padding:2px 6px;color:var(--ink)}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}

/* 空态 */
.empty-state{text-align:center;padding:64px 30px 68px}
.empty-state h2{font-size:24px;margin-bottom:14px;padding:0;border:0}
.empty-state p{max-width:520px;margin:0 auto 26px;color:var(--muted);font-size:15.5px}

/* 标签行 */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.tag{display:inline-flex;align-items:center;height:34px;padding:0 15px;border:1px solid var(--line);border-radius:999px;background:#fff;font-size:13px;color:var(--ink-soft);text-decoration:none;transition:all var(--base) var(--ease)}
.tag:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);text-decoration:none}
.back-link{display:inline-flex;align-items:center;gap:8px;margin-top:22px;font-size:14px;font-weight:600;color:var(--brand)}
.back-link:hover{gap:12px}

/* 上下篇 */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:34px}
.post-nav a{display:block;padding:18px 20px;border:1px solid var(--line);border-radius:var(--r-m);background:#fff;text-decoration:none;transition:border-color var(--base) var(--ease),box-shadow var(--base) var(--ease),transform var(--base) var(--ease)}
.post-nav a:hover{border-color:rgba(18,61,46,.35);box-shadow:var(--sh-2);transform:translateY(-3px);text-decoration:none}
.post-nav .pn-label{display:block;font-size:12px;letter-spacing:.16em;color:var(--muted);margin-bottom:8px}
.post-nav .pn-title{font-size:15.5px;font-weight:600;color:var(--ink);line-height:1.5}
.post-nav .p-next{text-align:right}

/* 侧栏 */
.article-side{position:relative}
.side-sticky{position:sticky;top:108px;display:grid;gap:18px}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-m);padding:20px 22px}
.side-title{font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--muted);margin-bottom:14px;text-transform:uppercase}
.toc-list{list-style:none;padding:0;margin:0;font-size:14px;line-height:1.65}
.toc-list li{margin-bottom:10px}
.toc-list li:last-child{margin-bottom:0}
.toc-list a{display:block;color:var(--ink-soft);border-left:2px solid transparent;padding-left:10px;margin-left:-2px}
.toc-list a:hover,.toc-list a.is-current{color:var(--brand);font-weight:600;border-left-color:var(--accent);text-decoration:none}
.side-links{list-style:none;padding:0;margin:0}
.side-links li{border-bottom:1px dashed var(--line)}
.side-links li:last-child{border-bottom:0}
.side-links a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 0;font-size:14.5px;color:var(--ink-soft)}
.side-links a:hover{color:var(--brand);text-decoration:none}
.side-links .arrow{transition:transform var(--base) var(--ease);color:var(--brand)}
.side-links a:hover .arrow{transform:translateX(4px)}
.side-cta{background:var(--brand-deep);border-color:var(--brand-deep);color:rgba(255,255,255,.78)}
.side-cta .side-cta-title{font-size:17px;font-weight:800;color:#fff;margin-bottom:10px}
.side-cta .side-cta-text{font-size:14px;line-height:1.75;color:rgba(255,255,255,.72);margin-bottom:18px}

/* 板块通用 */
.section{padding:64px 0}
.section-tight{padding:48px 0 72px}
.block-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:30px}
.eyebrow{font-size:12px;font-weight:700;letter-spacing:.22em;color:var(--warn);margin:0 0 10px}
.block-head h2{font-size:clamp(22px,2.8vw,32px)}
.block-head p{max-width:620px;margin:10px 0 0;font-size:15px;color:var(--muted)}

/* 相关推荐 */
.relate-block{margin-top:46px}
.relate-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.relate-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;text-decoration:none;transition:transform var(--base) var(--ease),box-shadow var(--base) var(--ease),border-color var(--base) var(--ease)}
.relate-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(18,61,46,.28);text-decoration:none}
.relate-cover{aspect-ratio:16/10;background:var(--brand-soft);overflow:hidden}
.relate-cover img{width:100%;height:100%;object-fit:cover;transition:transform var(--slow) var(--ease)}
.relate-card:hover .relate-cover img{transform:scale(1.04)}
.relate-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:8px;flex:1}
.relate-body h3{font-size:17px;line-height:1.45}
.relate-body p{font-size:14px;line-height:1.7;color:var(--muted);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* FAQ */
.faq-wrap{max-width:900px}
.faq-item{border:1px solid var(--line);border-radius:var(--r-m);background:#fff;margin-bottom:12px;overflow:hidden;transition:border-color var(--base) var(--ease),box-shadow var(--base) var(--ease)}
.faq-item[open]{border-color:rgba(18,61,46,.3);box-shadow:var(--sh-1)}
.faq-item summary{display:flex;align-items:center;gap:16px;min-height:64px;padding:14px 22px;cursor:pointer;list-style:none;font-size:16.5px;font-weight:600;color:var(--ink)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:#FCFBF8}
.faq-no{font-family:var(--mono);font-size:13px;color:var(--muted);flex:0 0 auto}
.faq-q{flex:1;line-height:1.6}
.faq-icon{position:relative;flex:0 0 auto;width:22px;height:22px;transition:transform var(--base) var(--ease)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px}
.faq-icon::before{left:0;top:10px;width:22px;height:2px}
.faq-icon::after{left:10px;top:0;width:2px;height:22px}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-item[open] .faq-icon::before,.faq-item[open] .faq-icon::after{background:var(--warn)}
.faq-a{padding:0 22px 22px 52px;max-width:760px}
.faq-a p{margin:0 0 .8em;font-size:15.5px;line-height:1.85;color:var(--ink-soft)}
.faq-a p:last-child{margin-bottom:0}

/* CTA 区块 */
.cta-section{background:var(--brand-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cta-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:44px;align-items:start;padding:64px 0}
.cta-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-l);padding:32px 34px 36px;box-shadow:var(--sh-1)}
.cta-card h2{font-size:clamp(21px,2.4vw,27px);margin-bottom:10px}
.cta-card .cta-note{font-size:14.5px;color:var(--muted);margin-bottom:26px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:8px}
.field label .req{display:inline-block;width:5px;height:5px;border-radius:50%;background:var(--warn);vertical-align:middle;margin-left:6px}
input[type="text"],input[type="search"],input[type="tel"],input[type="email"],select,textarea{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-s);background:#fff;color:var(--ink);
  font-family:inherit;font-size:15px;line-height:1.5;margin:0;box-shadow:none;
  transition:border-color var(--base) var(--ease),box-shadow var(--base) var(--ease)
}
textarea{height:auto;min-height:124px;padding:12px 14px;line-height:1.7;resize:vertical}
select{appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%237A756C' stroke-width='1.8' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center;padding-right:40px}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(199,240,74,.3)}
.check-line{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--muted);line-height:1.7;margin:4px 0 22px}
.check-line input{width:16px;height:16px;margin-top:4px;flex:0 0 auto;accent-color:var(--brand)}
.cta-submit{width:100%}
.cta-info h3{font-size:19px;margin-bottom:14px}
.cta-info > p{font-size:15px;color:var(--ink-soft);margin-bottom:24px}
.info-list{list-style:none;padding:0;margin:0;display:grid;gap:16px}
.info-list li{display:flex;gap:12px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--r-m);padding:16px 18px}
.info-dot{flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:var(--brand-soft);display:grid;place-items:center;color:var(--brand);font-size:13px;font-weight:800}
.info-list b{display:block;font-size:15px;color:var(--ink);margin-bottom:3px}
.info-list span{font-size:13.5px;color:var(--muted);line-height:1.7}

/* 页脚 */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.72);border-top:1px solid rgba(199,240,74,.32);padding:60px 0 26px;font-size:14.5px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand .logo-text{color:#fff}
.footer-brand .logo-text small{color:rgba(255,255,255,.55)}
.site-footer .logo-mark{background:#fff}
.site-footer .logo-mark::after{background:var(--brand)}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:340px;margin:0}
.footer-col h4{font-size:14px;color:#fff;letter-spacing:.06em;margin-bottom:16px;font-weight:700}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{margin-bottom:10px}
.footer-col a{color:rgba(255,255,255,.72);font-size:14px}
.footer-col a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.footer-col p{font-size:13.5px;color:rgba(255,255,255,.66);margin:0 0 8px;line-height:1.7}
.footer-col p b{color:#fff;font-weight:600}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-top:46px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);font-size:13px;color:rgba(255,255,255,.55)}
.footer-bottom .mono{font-size:12.5px;letter-spacing:.06em}

/* 动效 */
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
.faq-item[open] .faq-a{animation:fadeUp var(--base) var(--ease) both}

/* 响应式 */
@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:38px}
  .header-search input{width:160px}
}
@media (max-width:1023px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:34px;padding-top:44px}
  .side-sticky{position:static}
  .relate-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-grid{grid-template-columns:1fr;gap:34px;padding:52px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .header-search{display:none}
  .icon-btn{display:grid}
  .header-search.is-open{display:flex;position:absolute;top:76px;left:0;right:0;margin:0 16px;z-index:80}
  .header-search.is-open input{width:100%}
}
@media (max-width:767px){
  body{font-size:16px}
  .header-top-inner{min-height:66px}
  .logo-text{font-size:15.5px}
  .logo-text small{display:none}
  .header-actions .btn-sm{display:none}
  .article-hero-inner{padding:30px 0 38px}
  .breadcrumb{font-size:12.5px;margin-bottom:14px}
  .breadcrumb .current{max-width:100%;white-space:normal}
  .article-body{padding:26px 20px 30px;border-radius:var(--r-m);font-size:16px;line-height:1.85}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .article-body h2{font-size:21px}
  .post-nav{grid-template-columns:1fr}
  .post-nav .p-next{text-align:left}
  .relate-grid{grid-template-columns:1fr}
  .faq-item summary{padding:14px 16px;font-size:15.5px;gap:12px}
  .faq-a{padding:0 16px 20px 16px}
  .cta-card{padding:24px 20px 28px}
  .form-row{grid-template-columns:1fr;gap:0}
  .section{padding:48px 0}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:479px){
  .channel-scroll{padding:8px 0}
  .pill{height:32px;padding:0 14px;font-size:13.5px}
  .btn{height:46px;padding:0 20px;font-size:14.5px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .btn:hover,.relate-card:hover,.post-nav a:hover{transform:none}
}

/* roulang page: category1 */
:root{
  --brand:#123D2E;
  --brand-deep:#0A241B;
  --brand-soft:#E8F0E9;
  --accent:#C7F04A;
  --accent-ink:#22320A;
  --warn:#E4551F;
  --paper:#F7F5F0;
  --card:#FFFFFF;
  --ink:#14171A;
  --ink-soft:#3D423F;
  --muted:#7A756C;
  --line:#E4DFD4;
  --r-s:8px;
  --r-m:14px;
  --r-l:20px;
  --sh-1:0 1px 2px rgba(20,23,26,.05);
  --sh-2:0 22px 44px -26px rgba(18,61,46,.32);
  --fast:160ms;
  --base:220ms;
  --slow:420ms;
  --ease:cubic-bezier(.22,.7,.2,1);
  --container:1200px;
  --font:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --mono:"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:110px}
body{
  margin:0;padding:0;background:var(--paper);color:var(--ink);
  font-family:var(--font);font-size:16px;line-height:1.8;font-weight:400;
  text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color var(--fast) var(--ease),background-color var(--fast) var(--ease),border-color var(--fast) var(--ease),transform var(--fast) var(--ease)}
a:hover{color:#1b5c45}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none;padding:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.01em}

.grid-container{max-width:var(--container);margin:0 auto;padding-left:24px;padding-right:24px;width:100%}
@media (min-width:1440px){.grid-container{max-width:1280px}}

/* ============ 头部 ============ */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line)}
.header-top{padding:14px 0}
.header-top-inner{display:flex;align-items:center;gap:20px}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink);flex:0 0 auto}
.logo-mark{width:26px;height:26px;background:var(--brand);position:relative;border-radius:6px;display:inline-block;transform:rotate(45deg);flex:0 0 auto}
.logo-mark::after{content:"";position:absolute;left:4px;right:4px;bottom:8px;height:2px;background:var(--accent);border-radius:2px}
.logo-text{display:flex;flex-direction:column;font-weight:900;font-size:17px;line-height:1.2;letter-spacing:.01em}
.logo-text small{font-weight:400;font-size:11px;color:var(--muted);letter-spacing:.14em;margin-top:3px}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.header-search{display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:0 8px 0 16px;height:40px;transition:border-color var(--base) var(--ease),box-shadow var(--base) var(--ease)}
.header-search:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(199,240,74,.28)}
.header-search input{border:0;outline:none;background:transparent;width:210px;font-size:14px}
.header-search input::placeholder{color:var(--muted)}
.header-search button{width:30px;height:30px;border-radius:999px;display:flex;align-items:center;justify-content:center;background:var(--brand-soft);color:var(--brand);transition:background-color var(--fast) var(--ease)}
.header-search button:hover{background:var(--accent);color:var(--accent-ink)}
.icon-btn{width:40px;height:40px;border-radius:999px;border:1px solid var(--line);display:none;align-items:center;justify-content:center;color:var(--ink-soft);background:#fff}
.icon-btn:hover{border-color:rgba(18,61,46,.35);color:var(--brand)}
.icon-btn svg{width:16px;height:16px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;font-weight:600;font-size:15px;padding:0 24px;height:48px;border:1px solid transparent;transition:background-color var(--base) var(--ease),color var(--base) var(--ease),border-color var(--base) var(--ease),transform var(--base) var(--ease),box-shadow var(--base) var(--ease)}
.btn-sm{height:40px;font-size:14px;padding:0 20px}
.btn-solid{background:var(--brand);color:#fff}
.btn-solid:hover{background:var(--accent);color:var(--accent-ink);transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-outline{background:transparent;color:var(--brand);border-color:rgba(18,61,46,.35)}
.btn-outline:hover{background:var(--brand);color:#fff;border-color:var(--brand)}
.btn-block{width:100%}

.channel-bar{border-top:1px solid var(--line);background:#fff}
.channel-scroll{display:flex;gap:8px;align-items:center;overflow-x:auto;scroll-snap-type:x proximity;height:52px;scrollbar-width:none;-ms-overflow-style:none}
.channel-scroll::-webkit-scrollbar{display:none}
.pill{flex:0 0 auto;scroll-snap-align:start;height:36px;display:inline-flex;align-items:center;padding:0 18px;border-radius:999px;border:1px solid var(--line);color:var(--ink-soft);font-size:14px;font-weight:500;white-space:nowrap;background:#fff}
.pill:hover{border-color:rgba(18,61,46,.35);color:var(--brand);background:var(--brand-soft)}
.pill.is-active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}
.pill.is-active:hover{background:var(--brand-deep);color:#fff}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);font-weight:600;margin-bottom:14px}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px}
h2{font-size:clamp(24px,3vw,38px);line-height:1.22;font-weight:900;letter-spacing:-.01em}
h3{font-size:20px;line-height:1.4;font-weight:700}
h4{font-size:17px;line-height:1.5;font-weight:700}
.section-desc{color:var(--ink-soft);font-size:16px;max-width:640px;margin-top:14px}
.text-link{font-weight:600;color:var(--brand);font-size:14px;display:inline-flex;align-items:center;gap:6px;border-bottom:1px solid rgba(18,61,46,.3);padding-bottom:2px}
.text-link:hover{color:var(--brand-deep);border-color:var(--brand-deep)}
.text-link svg{transition:transform var(--base) var(--ease)}
.text-link:hover svg{transform:translateX(4px)}

/* ============ 分类页 Hero ============ */
.cat-hero{padding:56px 0 72px;background:#fff;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.cat-hero::after{content:"";position:absolute;right:-60px;top:-40px;width:220px;height:220px;background:var(--brand-soft);transform:rotate(45deg);opacity:.7;pointer-events:none}
.cat-hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;position:relative;z-index:1}
.crumbs{font-size:13px;color:var(--muted);margin-bottom:20px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--brand)}
.crumbs span.sep{color:#C9C2B4}
.cat-hero h1{font-size:clamp(28px,3.6vw,46px);line-height:1.2;font-weight:900;letter-spacing:-.02em;margin-bottom:20px}
.cat-hero h1 em{font-style:normal;color:var(--brand);display:block;font-size:.62em;font-weight:700;letter-spacing:.02em;margin-top:12px;line-height:1.4}
.hero-lead{font-size:17px;color:var(--ink-soft);max-width:520px;margin-bottom:28px}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:34px}
.micro-stats{display:flex;align-items:center;border-top:1px solid var(--line);padding-top:20px;gap:0}
.micro-stat{padding:0 22px;border-left:1px solid var(--line)}
.micro-stat:first-child{padding-left:0;border-left:0}
.micro-stat b{display:block;font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:24px;font-weight:700;color:var(--brand);line-height:1.2}
.micro-stat span{font-size:12px;color:var(--muted);letter-spacing:.04em}
.hero-figure{border-radius:var(--r-l);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-2);position:relative}
.hero-figure img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-l)}
.hero-figure figcaption{position:absolute;left:16px;bottom:16px;background:rgba(10,36,27,.86);color:#fff;font-size:13px;padding:8px 14px;border-radius:999px}

/* ============ 规格指标条 ============ */
.spec-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:-40px;position:relative;z-index:2}
.spec-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-m);padding:26px 24px;transition:border-color var(--base) var(--ease),transform var(--base) var(--ease),box-shadow var(--base) var(--ease)}
.spec-card:hover{border-color:rgba(18,61,46,.35);transform:translateY(-4px);box-shadow:var(--sh-2)}
.spec-card b{display:block;font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:clamp(24px,2.6vw,32px);font-weight:700;color:var(--brand);line-height:1.15;margin-bottom:8px;letter-spacing:-.02em}
.spec-card .spec-label{font-size:14px;font-weight:600;margin-bottom:10px}
.spec-card .spec-note{font-size:13px;color:var(--muted);line-height:1.7;border-top:1px solid var(--line);padding-top:10px}
.spec-foot{text-align:right;font-size:12px;color:var(--muted);margin-top:14px;font-family:var(--mono)}

/* ============ 准备区 不对称栅格 ============ */
.prep-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:32px;align-items:stretch}
.prep-feature{background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden;display:flex;flex-direction:column;transition:border-color var(--base) var(--ease),box-shadow var(--base) var(--ease),transform var(--base) var(--ease)}
.prep-feature:hover{border-color:rgba(18,61,46,.35);box-shadow:var(--sh-2);transform:translateY(-4px)}
.prep-feature img{width:100%;aspect-ratio:16/9;object-fit:cover}
.prep-feature-body{padding:28px 30px 32px}
.prep-feature-body h3{margin-bottom:12px}
.prep-feature-body p{color:var(--ink-soft);font-size:15px;margin-bottom:18px}
.row-list{display:flex;flex-direction:column;gap:0;background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden}
.row-item{display:flex;align-items:center;gap:18px;padding:22px 24px;border-bottom:1px solid var(--line);transition:background-color var(--base) var(--ease)}
.row-item:last-child{border-bottom:0}
.row-item:hover{background:var(--brand-soft)}
.row-item:hover .row-arrow{transform:translateX(4px);color:var(--brand)}
.row-no{font-family:var(--mono);font-size:13px;color:var(--warn);font-weight:700;flex:0 0 auto;width:26px}
.row-body{flex:1 1 auto}
.row-body strong{display:block;font-size:16px;font-weight:700;margin-bottom:4px}
.row-body span{font-size:13px;color:var(--muted);line-height:1.7}
.row-arrow{color:var(--muted);transition:transform var(--base) var(--ease),color var(--base) var(--ease);flex:0 0 auto}

/* ============ 2 列列表卡网格 ============ */
.kcard-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.kcard{background:var(--card);border:1px solid var(--line);border-radius:var(--r-m);padding:26px 26px 24px;display:flex;flex-direction:column;transition:border-color var(--base) var(--ease),transform var(--base) var(--ease),box-shadow var(--base) var(--ease)}
.kcard:hover{border-color:rgba(18,61,46,.35);transform:translateY(-4px);box-shadow:var(--sh-2)}
.kcard-top{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.kcard-no{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:4px 12px}
.kcard-tag{font-size:12px;color:var(--warn);border:1px solid rgba(228,85,31,.35);border-radius:999px;padding:3px 10px}
.kcard h3{font-size:18px;margin-bottom:10px;line-height:1.45}
.kcard p{font-size:14.5px;color:var(--ink-soft);line-height:1.8;margin-bottom:16px}
.kcard .kcard-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);padding-top:14px}
.kcard .kcard-foot em{font-style:normal;font-size:12px;color:var(--muted);font-family:var(--mono)}
.kcard:hover .kcard-foot svg{transform:translateX(4px)}
.kcard .kcard-foot svg{transition:transform var(--base) var(--ease)}

/* ============ 对比区 ============ */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:stretch}
.compare-col{border-radius:var(--r-l);padding:30px 28px;border:1px solid var(--line);background:var(--card)}
.compare-col.is-after{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff}
.compare-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.compare-col.is-after .compare-head{border-color:rgba(255,255,255,.16)}
.compare-head b{font-size:16px;font-weight:700}
.compare-col.is-after .compare-head b{color:#fff}
.compare-head em{font-style:normal;font-size:12px;font-family:var(--mono);color:var(--muted);letter-spacing:.08em}
.compare-col.is-after .compare-head em{color:var(--accent)}
.compare-list li{display:flex;gap:12px;align-items:flex-start;padding:13px 0;border-bottom:1px dashed var(--line);font-size:14.5px;line-height:1.7}
.compare-list li:last-child{border-bottom:0}
.compare-col.is-after .compare-list li{border-color:rgba(255,255,255,.14);color:rgba(255,255,255,.88)}
.compare-list li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--muted);margin-top:9px;flex:0 0 auto}
.compare-col.is-after .compare-list li::before{background:var(--accent)}
.compare-col.is-after .hl{color:var(--accent);font-family:var(--mono);font-weight:700}

/* ============ 报错对照表 ============ */
.table-wrap{background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden}
table.err-table{width:100%;border-collapse:collapse;font-size:14.5px}
table.err-table thead th{background:var(--brand-soft);text-align:left;font-size:13px;letter-spacing:.06em;color:var(--brand);font-weight:700;padding:16px 20px;border-bottom:1px solid var(--line);white-space:nowrap}
table.err-table tbody td{padding:16px 20px;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.7}
table.err-table tbody tr:last-child td{border-bottom:0}
table.err-table tbody tr{transition:background-color var(--base) var(--ease)}
table.err-table tbody tr:hover{background:#FBFAF6}
table.err-table td:first-child{font-weight:600;color:var(--ink);width:30%}
table.err-table td:nth-child(2){color:var(--ink-soft)}
table.err-table td:last-child{color:var(--muted);font-size:13px}
.tbl-hint{font-size:13px;color:var(--muted);margin-top:14px;font-family:var(--mono)}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto}
ul.accordion{background:transparent;border:0;margin:0;list-style:none}
ul.accordion li.accordion-item{border:1px solid var(--line);border-radius:var(--r-m);background:#fff;margin-bottom:12px;overflow:hidden;transition:border-color var(--base) var(--ease),box-shadow var(--base) var(--ease)}
ul.accordion li.accordion-item.is-active{border-color:rgba(18,61,46,.35);box-shadow:var(--sh-1)}
.accordion-title{display:flex;align-items:center;gap:16px;min-height:66px;padding:16px 22px;font-size:16px;font-weight:600;color:var(--ink);border:0;line-height:1.6}
.accordion-title::before{display:none!important}
.accordion-title:hover{background:#FBFAF6;color:var(--ink)}
.faq-no{font-family:var(--mono);font-size:13px;color:var(--warn);font-weight:700;flex:0 0 auto}
.faq-plus{margin-left:auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--brand);flex:0 0 auto;transition:transform var(--base) var(--ease),background-color var(--base) var(--ease),border-color var(--base) var(--ease)}
.accordion-item.is-active .faq-plus{transform:rotate(45deg);background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.accordion-content{padding:0 22px 24px;border:0!important;color:var(--ink-soft);line-height:1.85;font-size:15px;max-width:760px}
.accordion-content p+p{margin-top:12px}

/* ============ 交叉入口 ============ */
.cross-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cross-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-m);padding:24px;display:block;transition:border-color var(--base) var(--ease),transform var(--base) var(--ease),box-shadow var(--base) var(--ease)}
.cross-card:hover{border-color:rgba(18,61,46,.35);transform:translateY(-4px);box-shadow:var(--sh-2)}
.cross-card em{font-style:normal;font-size:12px;letter-spacing:.16em;color:var(--muted);text-transform:uppercase;display:block;margin-bottom:10px;font-family:var(--mono)}
.cross-card strong{display:block;font-size:17px;font-weight:700;margin-bottom:8px;color:var(--ink)}
.cross-card span{font-size:14px;color:var(--ink-soft);line-height:1.75;display:block}

/* ============ CTA / 表单 ============ */
.cta-section{background:var(--brand-deep);color:#fff;position:relative;overflow:hidden;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center}
.cta-section::before{content:"";position:absolute;inset:0;background:rgba(10,36,27,.9)}
.cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:56px}
.cta-section h2{color:#fff}
.cta-section .eyebrow{color:rgba(255,255,255,.6)}
.cta-section .section-desc{color:rgba(255,255,255,.75)}
.trust-list{margin-top:28px;display:flex;flex-direction:column;gap:16px}
.trust-item{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;color:rgba(255,255,255,.85);line-height:1.7}
.trust-item i{width:22px;height:22px;border-radius:50%;background:var(--accent);color:var(--accent-ink);display:flex;align-items:center;justify-content:center;flex:0 0 auto;font-style:normal;font-size:12px;font-weight:700;margin-top:3px}
.form-card{background:#fff;border-radius:var(--r-l);padding:32px;box-shadow:var(--sh-2)}
.form-row{margin-bottom:18px}
.form-row label{display:block;font-size:13px;color:var(--muted);margin-bottom:8px;font-weight:600}
.form-row label .req{color:var(--warn);margin-left:4px;font-size:16px;line-height:0}
.form-row input[type="text"],.form-row input[type="tel"],.form-row input[type="email"],.form-row select,.form-row textarea{
  width:100%;background:#fff;border:1px solid var(--line);border-radius:var(--r-s);padding:13px 14px;font-size:15px;transition:border-color var(--base) var(--ease),box-shadow var(--base) var(--ease);
}
.form-row input,.form-row select{height:48px}
.form-row textarea{min-height:110px;resize:vertical;line-height:1.7}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(199,240,74,.28)}
.form-row select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--brand) 50%),linear-gradient(135deg,var(--brand) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--ink-soft);line-height:1.7;margin:6px 0 22px}
.check-row input{width:16px;height:16px;margin-top:4px;accent-color:var(--brand);flex:0 0 auto}
.form-note{font-size:12px;color:var(--muted);text-align:center;margin-top:14px}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.78);border-top:3px solid var(--accent);padding:64px 0 28px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo{color:#fff;margin-bottom:16px}
.footer-brand .logo-text small{color:rgba(255,255,255,.55)}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.7);max-width:340px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:700}
.footer-col ul li{margin-bottom:10px}
.footer-col a{color:rgba(255,255,255,.75);font-size:14px}
.footer-col a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.footer-col p{font-size:13.5px;color:rgba(255,255,255,.7);margin-bottom:8px;line-height:1.7}
.footer-col p b{color:#fff;font-weight:600}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:48px;padding-top:22px;display:flex;justify-content:space-between;gap:16px;font-size:13px;color:rgba(255,255,255,.55);flex-wrap:wrap}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-col:last-child{grid-column:1 / -1}
}
@media (max-width:1023px){
  .section{padding:80px 0}
  .cat-hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-figure{order:-1}
  .spec-bar{grid-template-columns:repeat(2,1fr);margin-top:-28px}
  .prep-grid{grid-template-columns:1fr}
  .compare-grid{grid-template-columns:1fr}
  .cross-grid{grid-template-columns:1fr 1fr}
  .cta-inner{grid-template-columns:1fr;gap:40px}
}
@media (max-width:767px){
  html{scroll-padding-top:96px}
  .grid-container{padding-left:16px;padding-right:16px}
  .header-top{padding:10px 0}
  .logo-text{font-size:15px}
  .logo-text small{font-size:10px;letter-spacing:.1em}
  .logo-mark{width:22px;height:22px}
  .header-search{display:none;position:absolute;left:16px;right:16px;top:62px;z-index:70;box-shadow:var(--sh-2);background:#fff}
  .header-search.is-open{display:flex}
  .header-search input{width:100%}
  .header-actions .btn-sm{display:none}
  .icon-btn{display:inline-flex}
  .channel-scroll{height:46px}
  .pill{height:32px;font-size:13px;padding:0 14px}
  .section{padding:60px 0}
  .section-tight{padding:52px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:30px}
  .cat-hero{padding:32px 0 48px}
  .hero-btns .btn{width:100%}
  .micro-stats{flex-wrap:wrap;gap:16px}
  .micro-stat{padding:0 14px}
  .micro-stat b{font-size:20px}
  .spec-bar{grid-template-columns:1fr;gap:16px;margin-top:-20px}
  .kcard-grid{grid-template-columns:1fr}
  .cross-grid{grid-template-columns:1fr}
  .table-wrap{overflow-x:auto}
  table.err-table{min-width:620px}
  .form-card{padding:24px 20px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .accordion-title{min-height:58px;padding:14px 16px;font-size:15px}
  .accordion-content{padding:0 16px 20px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .kcard:hover,.spec-card:hover,.cross-card:hover,.prep-feature:hover{transform:none!important}
}

/* roulang page: category2 */
/* ========== 设计变量 ========== */
:root{
  --brand:#123D2E;
  --brand-deep:#0A241B;
  --brand-soft:#E8F0E9;
  --accent:#C7F04A;
  --accent-ink:#22320A;
  --warn:#E4551F;
  --paper:#F7F5F0;
  --card:#FFFFFF;
  --ink:#14171A;
  --ink-soft:#3D423F;
  --muted:#7A756C;
  --line:#E4DFD4;
  --r-s:8px;
  --r-m:14px;
  --r-l:20px;
  --sh-1:0 1px 2px rgba(20,23,26,.05);
  --sh-2:0 22px 44px -26px rgba(18,61,46,.32);
  --fast:160ms;
  --base:220ms;
  --slow:420ms;
  --ease:cubic-bezier(.22,.7,.2,1);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --container:1200px;
}

/* ========== 基础 reset ========== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color var(--fast) var(--ease)}
a:hover{text-decoration:underline;text-underline-offset:3px}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.22;letter-spacing:-.012em}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
figure{margin:0}
::selection{background:var(--accent);color:var(--accent-ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:3px}

/* ========== 容器 ========== */
.grid-container{width:100%;max-width:var(--container);margin:0 auto;padding-left:24px;padding-right:24px}
@media (min-width:1440px){.grid-container{max-width:1280px}}

/* ========== 按钮 ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border:1px solid transparent;border-radius:999px;
  font-size:15px;font-weight:700;letter-spacing:.01em;cursor:pointer;
  text-decoration:none;white-space:nowrap;
  transition:background var(--base) var(--ease),color var(--base) var(--ease),border-color var(--base) var(--ease),transform var(--fast) var(--ease);
}
.btn:hover{text-decoration:none}
.btn:active{transform:translateY(1px)}
.btn-solid{background:var(--brand);color:#fff}
.btn-solid:hover{background:var(--accent);color:var(--accent-ink)}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:var(--brand);color:#fff}
.btn-light{background:#fff;color:var(--brand)}
.btn-light:hover{background:var(--accent);color:var(--accent-ink)}
.btn-line{border-color:rgba(255,255,255,.55);color:#fff;background:transparent}
.btn-line:hover{background:#fff;color:var(--brand)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}

/* ========== 头部 ========== */
.site-header{position:relative;z-index:60;background:#fff;border-bottom:1px solid var(--line)}
.header-top-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:76px}
.logo{display:flex;align-items:center;gap:12px;color:var(--ink);text-decoration:none;flex:0 0 auto}
.logo:hover{text-decoration:none}
.logo-mark{position:relative;width:34px;height:34px;border-radius:8px;background:linear-gradient(135deg,var(--brand),var(--brand-deep));flex:0 0 auto;overflow:hidden}
.logo-mark::before{content:"";position:absolute;left:7px;right:7px;top:16px;height:3px;background:var(--accent);transform:skewX(-42deg) rotate(-14deg);border-radius:2px}
.logo-mark::after{content:"";position:absolute;left:7px;top:7px;width:12px;height:12px;border-top:2px solid rgba(199,240,74,.7);border-left:2px solid rgba(199,240,74,.7);border-radius:8px 0 0 0}
.logo-text{display:flex;flex-direction:column;line-height:1.2;font-size:17px;font-weight:800;color:inherit;letter-spacing:-.01em}
.logo-text small{font-size:11.5px;font-weight:500;color:var(--muted);letter-spacing:.05em;margin-top:2px}
.header-actions{display:flex;align-items:center;gap:10px}
.header-search{
  display:flex;align-items:center;gap:6px;
  border:1px solid var(--line);border-radius:999px;background:#fff;
  padding:3px 5px 3px 16px;
  transition:border-color var(--base) var(--ease),box-shadow var(--base) var(--ease);
}
.header-search:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(199,240,74,.28)}
.header-search input{border:0;outline:0;background:transparent;width:168px;height:32px;font-size:14px}
.header-search input::placeholder{color:var(--muted)}
.header-search button{
  width:30px;height:30px;border:0;border-radius:50%;cursor:pointer;
  background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;
  transition:background var(--fast) var(--ease),color var(--fast) var(--ease);
}
.header-search button:hover{background:var(--accent);color:var(--accent-ink)}
.icon-btn{display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:50%;background:#fff;color:var(--brand);cursor:pointer;place-items:center;transition:background var(--fast) var(--ease),border-color var(--fast) var(--ease)}
.icon-btn:hover{background:var(--brand-soft);border-color:rgba(18,61,46,.35)}
.icon-btn svg{width:16px;height:16px}

/* 频道行 */
.channel-bar{
  position:sticky;top:0;z-index:55;
  background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  height:52px;display:flex;align-items:center;
}
.channel-scroll{
  display:flex;align-items:center;gap:8px;
  overflow-x:auto;scroll-snap-type:x proximity;padding:8px 0;
  scrollbar-width:none;-ms-overflow-style:none;
}
.channel-scroll::-webkit-scrollbar{display:none}
.pill{
  flex:0 0 auto;scroll-snap-align:start;
  display:inline-flex;align-items:center;height:36px;padding:0 18px;
  border:1px solid var(--line);border-radius:999px;
  font-size:14px;font-weight:500;color:var(--ink-soft);white-space:nowrap;
  transition:background var(--fast) var(--ease),color var(--fast) var(--ease),border-color var(--fast) var(--ease);
}
.pill:hover{background:var(--brand-soft);border-color:rgba(18,61,46,.35);color:var(--brand);text-decoration:none}
.pill.is-active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:700}

/* ========== 页面头部 ========== */
.page-hero{position:relative;background:var(--brand-deep);color:#fff;padding:76px 0 68px;overflow:hidden}
.page-hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.26}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,36,27,.74),rgba(10,36,27,.95))}
.page-hero::before{
  content:"";position:absolute;right:-70px;top:-70px;width:260px;height:260px;z-index:1;
  background:linear-gradient(135deg,transparent 48%,var(--accent) 48%,var(--accent) 52%,transparent 52%);
  opacity:.09;pointer-events:none;
}
.page-hero-inner{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.6);margin-bottom:20px}
.breadcrumb a{color:rgba(255,255,255,.82)}
.breadcrumb a:hover{color:var(--accent);text-decoration:none}
.page-hero h1{font-size:clamp(28px,3.9vw,46px);max-width:900px;color:#fff}
.page-hero .lede{margin-top:20px;max-width:760px;font-size:16.5px;line-height:1.85;color:rgba(255,255,255,.82)}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.hero-meta span{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:rgba(255,255,255,.78);
  border:1px solid rgba(255,255,255,.22);border-radius:999px;padding:6px 14px;
}
.hero-meta b{color:var(--accent);font-weight:700}

/* 锚点子导航 */
.anchor-bar{background:#fff;border-bottom:1px solid var(--line)}
.anchor-scroll{display:flex;align-items:center;gap:8px;overflow-x:auto;padding:14px 0;scrollbar-width:none}
.anchor-scroll::-webkit-scrollbar{display:none}
.anchor-link{
  flex:0 0 auto;font-size:14px;font-weight:600;padding:7px 16px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);
  transition:background var(--fast) var(--ease),color var(--fast) var(--ease);
}
.anchor-link:hover{background:var(--brand);color:#fff;text-decoration:none}

/* ========== 板块 ========== */
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{font-size:clamp(24px,2.8vw,34px);margin:14px 0 14px}
.section-head p{color:var(--ink-soft);font-size:16px;line-height:1.85}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.18em;
  color:var(--brand);background:var(--brand-soft);
  padding:6px 14px;border-radius:999px;
}

/* ========== 图文交替 ========== */
.zz-stack{display:flex;flex-direction:column;gap:88px}
.zz-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.zz-row.is-rev .zz-media{order:2}
.zz-media{
  border-radius:var(--r-l);overflow:hidden;background:var(--brand-soft);
  aspect-ratio:4/3;box-shadow:var(--sh-1);
  transition:box-shadow var(--base) var(--ease),transform var(--base) var(--ease);
}
.zz-media img{width:100%;height:100%;object-fit:cover}
.zz-media:hover{box-shadow:var(--sh-2);transform:translateY(-4px)}
.zz-body h2{font-size:clamp(23px,2.6vw,32px);margin:14px 0 16px}
.zz-body > p{color:var(--ink-soft);font-size:16px;line-height:1.85;margin-bottom:18px}
.tick-list{margin-top:22px}
.tick-list li{
  position:relative;padding-left:28px;margin-bottom:14px;
  color:var(--ink-soft);font-size:15.5px;line-height:1.75;
}
.tick-list li:last-child{margin-bottom:0}
.tick-list li::before{
  content:"";position:absolute;left:2px;top:9px;width:14px;height:8px;
  border-left:2px solid var(--brand);border-bottom:2px solid var(--brand);
  transform:rotate(-45deg);border-radius:1px;
}
.tick-list li b{color:var(--ink);font-weight:700}

/* ========== 数据小卡 ========== */
.stat-mini-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.stat-mini{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-m);
  padding:34px 32px;
  transition:transform var(--base) var(--ease),box-shadow var(--base) var(--ease),border-color var(--base) var(--ease);
}
.stat-mini:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(18,61,46,.35)}
.stat-num{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:clamp(34px,4.2vw,50px);font-weight:700;line-height:1;
  color:var(--brand);letter-spacing:-.02em;
}
.stat-label{margin-top:14px;font-size:16px;font-weight:700;color:var(--ink)}
.stat-desc{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.7}

/* ========== FAQ ========== */
.faq{max-width:900px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;
  transition:border-color var(--base) var(--ease),box-shadow var(--base) var(--ease);
}
.faq-item + .faq-item{margin-top:12px}
.faq-item.is-open{border-color:rgba(18,61,46,.35);box-shadow:var(--sh-1)}
.faq-q{
  display:flex;align-items:center;gap:16px;width:100%;min-height:64px;
  padding:16px 22px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:16px;font-weight:700;color:var(--ink);
}
.faq-q:hover{color:var(--brand)}
.faq-idx{font-family:var(--mono);font-size:13px;color:var(--warn);flex:0 0 auto;font-weight:600}
.faq-text{flex:1}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 auto;transition:transform var(--base) var(--ease)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height var(--slow) var(--ease)}
.faq-a-inner{padding:0 22px 24px 62px;color:var(--ink-soft);font-size:15.5px;line-height:1.85;max-width:760px}

/* ========== 交叉入口 ========== */
.cross-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cross-card{
  display:flex;flex-direction:column;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;color:inherit;
  transition:transform var(--base) var(--ease),box-shadow var(--base) var(--ease),border-color var(--base) var(--ease);
}
.cross-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(18,61,46,.35);text-decoration:none}
.cross-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.cross-body{padding:22px 22px 24px}
.cross-body h3{font-size:18px;margin-bottom:8px;color:var(--ink)}
.cross-body p{font-size:14px;color:var(--muted);line-height:1.7;margin:0 0 14px}
.cross-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--brand)}
.cross-card:hover .cross-more{gap:10px}
.cross-more svg{width:14px;height:14px;transition:transform var(--fast) var(--ease)}
.cross-card:hover .cross-more svg{transform:translateX(4px)}

/* ========== CTA 通栏 ========== */
.cta-band{background:var(--brand);color:#fff;padding:66px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-inner h2{font-size:clamp(22px,2.6vw,32px);color:#fff;max-width:620px}
.cta-inner p{margin-top:14px;color:rgba(255,255,255,.8);font-size:15.5px;max-width:620px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ========== 页脚 ========== */
.site-footer{background:var(--brand-deep);color:#D8E3DC;padding:66px 0 0;border-top:1px solid rgba(199,240,74,.42)}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;padding-bottom:50px}
.footer-brand .logo{color:#fff;margin-bottom:18px}
.footer-brand .logo-text{color:#fff}
.footer-brand .logo-text small{color:rgba(255,255,255,.55)}
.footer-brand p{color:rgba(216,227,220,.76);font-size:14.5px;line-height:1.8;max-width:370px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;letter-spacing:.05em}
.footer-col ul li{margin-bottom:10px}
.footer-col a{color:rgba(216,227,220,.82);font-size:14.5px}
.footer-col a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.footer-col p{font-size:14px;color:rgba(216,227,220,.72);margin-bottom:9px;line-height:1.7}
.footer-col b{color:#fff;font-weight:600}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0;font-size:13px;color:rgba(216,227,220,.6);
}
.mono{font-family:var(--mono);letter-spacing:.05em}

/* ========== 入场动效 ========== */
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity var(--slow) var(--ease),transform var(--slow) var(--ease)}
.js .reveal.is-in{opacity:1;transform:none}

/* ========== 响应式 ========== */
@media (max-width:1023px){
  .section{padding:80px 0}
  .section-tight{padding:56px 0}
  .zz-row{gap:32px}
  .cross-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .header-search{display:none}
  .header-search.is-open{
    display:flex;position:absolute;left:0;right:0;top:100%;z-index:80;
    margin-top:8px;box-shadow:var(--sh-2);
  }
  .icon-btn{display:grid}
}
@media (max-width:767px){
  .grid-container{padding-left:16px;padding-right:16px}
  .header-top-inner{min-height:64px;gap:12px}
  .logo-text{font-size:15px}
  .logo-text small{font-size:10.5px}
  .logo-mark{width:30px;height:30px}
  .channel-bar{height:46px}
  .channel-scroll{padding:7px 0}
  .pill{height:32px;padding:0 15px;font-size:13.5px}
  .page-hero{padding:54px 0 48px}
  .section{padding:62px 0}
  .section-tight{padding:46px 0}
  .zz-stack{gap:56px}
  .zz-row{grid-template-columns:1fr;gap:24px}
  .zz-row.is-rev .zz-media{order:0}
  .zz-media{aspect-ratio:16/11}
  .stat-mini-grid{grid-template-columns:1fr}
  .stat-mini{padding:26px 22px}
  .cross-grid{grid-template-columns:1fr}
  .faq-a-inner{padding:0 20px 22px 20px}
  .faq-q{padding:15px 18px;gap:12px;font-size:15.5px;min-height:58px}
  .cta-band{padding:52px 0}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px}
  .site-footer{padding-top:52px}
}
@media (max-width:519px){
  .btn{height:46px;padding:0 20px;font-size:14.5px}
  .page-hero h1{font-size:26px}
  .page-hero .lede{font-size:15.5px}
  .hero-meta span{font-size:12.5px}
  .section-head h2{font-size:23px}
  .zz-body h2{font-size:22px}
}

/* ========== 无障碍降级 ========== */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .js .reveal{opacity:1 !important;transform:none !important}
}

/* roulang page: category3 */
/* ============ 01 设计变量 ============ */
:root{
  --brand:#123D2E;
  --brand-deep:#0A241B;
  --brand-soft:#E8F0E9;
  --accent:#C7F04A;
  --accent-ink:#22320A;
  --warn:#E4551F;
  --paper:#F7F5F0;
  --card:#FFFFFF;
  --ink:#14171A;
  --ink-soft:#3D423F;
  --muted:#7A756C;
  --line:#E4DFD4;
  --r-s:8px;
  --r-m:14px;
  --r-l:20px;
  --sh-1:0 1px 2px rgba(20,23,26,.05);
  --sh-2:0 22px 44px -26px rgba(18,61,46,.32);
  --fast:160ms;
  --base:220ms;
  --slow:420ms;
  --ease:cubic-bezier(.22,.7,.2,1);
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
}
/* ============ 02 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:132px;}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16.5px;line-height:1.8;letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:900;line-height:1.22;color:var(--ink);letter-spacing:-.01em;}
p{margin:0 0 1em;line-height:1.85;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:var(--brand);text-decoration:none;transition:color var(--base) var(--ease);}
a:hover{color:var(--brand-deep);}
img{max-width:100%;display:block;height:auto;}
button{font-family:inherit;}
input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto;}
@media (min-width:1440px){.grid-container{max-width:1280px;}}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}
.eyebrow{
  font-size:12px;letter-spacing:.2em;font-weight:700;color:var(--warn);
  text-transform:uppercase;margin:0 0 14px;
}
/* ============ 03 通用板块 ============ */
.sec{padding:96px 0;}
.sec--white{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec--soft{background:var(--brand-soft);border-top:1px solid var(--line);}
.sec-head{max-width:760px;margin-bottom:48px;}
.sec-head h2{font-size:clamp(24px,3vw,38px);margin-bottom:16px;}
.sec-head h2 span{color:var(--warn);}
.sec-lead{color:var(--ink-soft);font-size:16px;margin:0;max-width:660px;}
/* ============ 04 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,245,240,.95);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
}
.header-top-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:20px;height:76px;}
.logo{display:flex;align-items:center;gap:12px;color:var(--ink);text-decoration:none;flex-shrink:0;}
.logo-mark{
  width:26px;height:26px;flex:0 0 26px;position:relative;background:var(--brand);
  clip-path:polygon(0 0,100% 0,100% 66%,66% 100%,0 100%);
}
.logo-mark::after{
  content:"";position:absolute;left:6px;bottom:5px;width:12px;height:12px;
  border:2px solid var(--accent);border-radius:50% 50% 50% 0;border-right-color:transparent;
}
.logo-text{display:flex;flex-direction:column;font-size:16px;font-weight:900;line-height:1.18;letter-spacing:0;}
.logo-text small{font-size:10.5px;font-weight:500;color:var(--muted);letter-spacing:.16em;}
.header-actions{display:flex;align-items:center;gap:12px;}
.header-search{
  display:flex;align-items:center;width:238px;height:40px;padding:0 6px 0 14px;
  border:1px solid var(--line);border-radius:999px;background:#fff;
  transition:border-color var(--base) var(--ease),box-shadow var(--base) var(--ease);
}
.header-search:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(199,240,74,.28);}
.header-search input{flex:1;border:0;background:transparent;height:100%;font-size:13.5px;outline:none;color:var(--ink);}
.header-search input::placeholder{color:var(--muted);}
.header-search button{
  width:30px;height:30px;border:0;border-radius:50%;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;cursor:pointer;transition:background var(--base) var(--ease);
}
.header-search button:hover{background:var(--accent);color:var(--accent-ink);}
.icon-btn{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-s);
  background:#fff;color:var(--brand);align-items:center;justify-content:center;cursor:pointer;
  transition:border-color var(--base) var(--ease),color var(--base) var(--ease);
}
.icon-btn:hover{border-color:var(--brand);}
.icon-btn svg{width:17px;height:17px;}
.menu-btn{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-s);
  background:#fff;align-items:center;justify-content:center;cursor:pointer;flex-direction:column;gap:4px;
}
.menu-btn span{display:block;width:18px;height:2px;background:var(--brand);border-radius:2px;transition:transform var(--base) var(--ease),opacity var(--base) var(--ease);}
.menu-btn.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.menu-btn.is-open span:nth-child(2){opacity:0;}
.menu-btn.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.mobile-panel{display:none;}
.mobile-panel.is-open{display:block;border-top:1px solid var(--line);background:#fff;padding:10px 0 16px;}
.mobile-panel a{
  display:block;padding:11px 0;font-size:15px;font-weight:500;color:var(--ink-soft);
  border-bottom:1px dashed var(--line);
}
.mobile-panel a:last-child{border-bottom:0;}
.mobile-panel a.is-active{color:var(--brand);font-weight:700;}
/* 频道条 */
.channel-bar{background:#fff;border-top:1px solid var(--line);}
.channel-scroll{
  display:flex;align-items:center;gap:8px;height:52px;overflow-x:auto;
  scroll-snap-type:x proximity;scrollbar-width:none;-ms-overflow-style:none;
}
.channel-scroll::-webkit-scrollbar{display:none;}
.pill{
  flex:0 0 auto;scroll-snap-align:start;display:inline-flex;align-items:center;
  height:36px;padding:0 18px;border-radius:999px;border:1px solid var(--line);
  background:#fff;color:var(--ink-soft);font-size:14px;font-weight:500;
  transition:background var(--base) var(--ease),color var(--base) var(--ease),border-color var(--base) var(--ease);
}
.pill:hover{border-color:rgba(18,61,46,.4);color:var(--brand);}
.pill.is-active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:700;}
.pill.is-active:hover{color:#fff;}
/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;font-size:15px;font-weight:700;
  border:1px solid transparent;cursor:pointer;
  transition:background var(--base) var(--ease),color var(--base) var(--ease),border-color var(--base) var(--ease),transform var(--base) var(--ease);
}
.btn-solid{background:var(--brand);color:#fff;}
.btn-solid:hover{background:var(--accent);color:var(--accent-ink);transform:translateY(-2px);}
.btn-ghost{background:transparent;color:var(--brand);border-color:rgba(18,61,46,.35);}
.btn-ghost:hover{background:var(--brand);border-color:var(--brand);color:#fff;transform:translateY(-2px);}
.btn-light{background:#fff;color:var(--brand);}
.btn-light:hover{background:var(--accent);color:var(--accent-ink);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn:active{transform:translateY(0);}
/* ============ 05 Hero ============ */
.page-hero{position:relative;background:var(--brand-deep);color:#fff;overflow:hidden;}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:52px 52px;opacity:.55;pointer-events:none;
}
.page-hero-inner{
  position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;
  gap:56px;align-items:center;padding:72px 0 64px;
}
.page-hero h1{color:#fff;font-size:clamp(30px,4.2vw,50px);margin-bottom:20px;}
.page-hero .hero-lead{color:rgba(255,255,255,.82);font-size:16.5px;max-width:540px;margin-bottom:26px;}
.hero-crumb{font-size:13px;color:rgba(255,255,255,.62);margin-bottom:18px;font-family:var(--mono);}
.hero-crumb a{color:rgba(255,255,255,.72);}
.hero-crumb a:hover{color:var(--accent);}
.hero-btns{display:flex;flex-wrap:wrap;gap:12px;}
.micro-stats{display:flex;align-items:stretch;gap:0;margin-top:34px;flex-wrap:wrap;}
.micro-stats > div{padding:0 22px;border-left:1px solid rgba(255,255,255,.2);}
.micro-stats > div:first-child{padding-left:0;border-left:0;}
.micro-stats b{display:block;font-family:var(--mono);font-size:22px;font-weight:700;color:var(--accent);line-height:1.2;}
.micro-stats span{font-size:12.5px;color:rgba(255,255,255,.68);}
.hero-figure{position:relative;border-radius:var(--r-l);overflow:hidden;border:1px solid rgba(255,255,255,.14);}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.hero-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:14px 18px;font-size:13px;
  background:linear-gradient(to top,rgba(10,36,27,.9),rgba(10,36,27,0));
  color:rgba(255,255,255,.85);
}
/* ============ 06 锚点导航 ============ */
.anchor-nav{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:128px;z-index:40;}
.anchor-scroll{display:flex;gap:8px;overflow-x:auto;padding:12px 0;scrollbar-width:none;}
.anchor-scroll::-webkit-scrollbar{display:none;}
.anchor-scroll .pill{height:34px;font-size:13.5px;padding:0 16px;}
/* ============ 07 时间线 ============ */
.timeline{margin-top:8px;}
.tl-item{position:relative;display:grid;grid-template-columns:48px 1fr;gap:26px;padding-bottom:40px;}
.tl-item::before{content:"";position:absolute;left:23.5px;top:56px;bottom:6px;width:1px;background:var(--line);}
.tl-item:last-child{padding-bottom:0;}
.tl-item:last-child::before{content:none;}
.tl-node{
  width:48px;height:48px;border-radius:50%;background:#fff;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:14px;font-weight:700;color:var(--brand);
  transition:transform var(--base) var(--ease),background var(--base) var(--ease),border-color var(--base) var(--ease),color var(--base) var(--ease);
}
.tl-item:hover .tl-node{transform:scale(1.06);background:var(--accent);border-color:var(--accent);color:var(--accent-ink);}
.tl-body{padding-top:6px;}
.tl-body h3{font-size:20px;margin-bottom:10px;}
.tl-body p{color:var(--ink-soft);font-size:15.5px;margin-bottom:14px;max-width:720px;}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;}
.tl-tags li{
  font-size:13px;color:var(--brand);background:var(--brand-soft);
  border-radius:999px;padding:5px 13px;line-height:1.5;
}
.tl-item:last-child::after{content:none;}
/* ============ 08 数据小卡 ============ */
.stat-duo{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:56px;}
.stat-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-l);padding:32px 34px;
  transition:transform var(--base) var(--ease),box-shadow var(--base) var(--ease),border-color var(--base) var(--ease);
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(18,61,46,.35);}
.stat-card .num{font-family:var(--mono);font-size:clamp(38px,5vw,60px);font-weight:700;color:var(--brand);line-height:1;font-variant-numeric:tabular-nums;}
.stat-card .num em{font-style:normal;font-size:18px;color:var(--muted);margin-left:6px;}
.stat-card .label{font-size:15px;font-weight:700;margin:16px 0 6px;}
.stat-card .note{font-size:14px;color:var(--muted);margin:0;}
.stat-card hr{border:0;border-top:1px solid var(--line);margin:18px 0 16px;}
/* ============ 09 对比表 ============ */
.cmp-wrap{border:1px solid var(--line);border-radius:var(--r-l);background:#fff;overflow:hidden;}
.cmp-table{width:100%;border-collapse:collapse;font-size:15px;}
.cmp-table thead th{
  text-align:left;padding:18px 24px;background:var(--brand-soft);color:var(--brand);
  font-size:13px;letter-spacing:.08em;font-weight:700;border-bottom:1px solid var(--line);
}
.cmp-table td{padding:18px 24px;border-bottom:1px solid var(--line);color:var(--ink-soft);vertical-align:top;line-height:1.7;}
.cmp-table tbody tr{transition:background var(--fast) var(--ease);}
.cmp-table tbody tr:hover{background:#FBFDF9;}
.cmp-table tbody tr:last-child td{border-bottom:0;}
.cmp-table td:first-child{color:var(--ink);font-weight:500;width:32%;}
.cmp-table td:nth-child(2){color:var(--brand);font-weight:500;}
.tag-warn{
  display:inline-block;font-size:12.5px;padding:3px 10px;border-radius:999px;
  background:rgba(228,85,31,.1);color:var(--warn);border:1px solid rgba(228,85,31,.25);
}
.tag-ok{
  display:inline-block;font-size:12.5px;padding:3px 10px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);border:1px solid rgba(18,61,46,.18);
}
/* ============ 10 入口按钮组 ============ */
.entry-group{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.entry-btn{
  display:flex;flex-direction:column;gap:8px;padding:26px 24px;border:1px solid var(--line);
  border-radius:var(--r-l);background:#fff;color:var(--ink);text-decoration:none;
  transition:transform var(--base) var(--ease),box-shadow var(--base) var(--ease),border-color var(--base) var(--ease),background var(--base) var(--ease);
}
.entry-btn strong{font-size:17px;font-weight:900;display:flex;align-items:center;justify-content:space-between;gap:12px;}
.entry-btn strong i{font-style:normal;color:var(--brand);transition:transform var(--base) var(--ease);}
.entry-btn span{font-size:14px;color:var(--muted);line-height:1.7;}
.entry-btn:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(18,61,46,.35);color:var(--ink);background:#fff;}
.entry-btn:hover strong i{transform:translateX(4px);}
.entry-btn.is-primary{background:var(--brand);border-color:var(--brand);color:#fff;}
.entry-btn.is-primary span{color:rgba(255,255,255,.78);}
.entry-btn.is-primary strong i{color:var(--accent);}
.entry-btn.is-primary:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;}
/* ============ 11 交叉入口卡片 ============ */
.cross-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.cross-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-m);
  overflow:hidden;color:var(--ink);text-decoration:none;
  transition:transform var(--base) var(--ease),box-shadow var(--base) var(--ease),border-color var(--base) var(--ease);
}
.cross-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(18,61,46,.35);color:var(--ink);}
.cross-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.cross-card .cc-body{padding:20px 22px 24px;}
.cross-card .cc-tag{font-size:12px;font-family:var(--mono);color:var(--warn);letter-spacing:.06em;}
.cross-card h3{font-size:17px;margin:8px 0 8px;}
.cross-card p{font-size:14px;color:var(--muted);margin:0;line-height:1.7;}
/* ============ 12 FAQ ============ */
.faq-list{max-width:860px;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-m);margin-bottom:12px;transition:border-color var(--base) var(--ease);}
.faq-item:hover{border-color:rgba(18,61,46,.35);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;height:66px;padding:0 22px;
  background:none;border:0;cursor:pointer;text-align:left;color:var(--ink);
}
.faq-q .idx{font-family:var(--mono);font-size:13px;color:var(--warn);flex:0 0 auto;}
.faq-q .txt{flex:1;font-size:16.5px;font-weight:700;line-height:1.5;}
.faq-q .ico{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--brand);
  transition:transform var(--base) var(--ease),background var(--base) var(--ease),border-color var(--base) var(--ease);
}
.faq-q .ico::before{content:"";width:11px;height:11px;background:
  linear-gradient(var(--brand),var(--brand)) center/11px 1.6px no-repeat,
  linear-gradient(var(--brand),var(--brand)) center/1.6px 11px no-repeat;}
.faq-item.is-open .faq-q .ico{transform:rotate(45deg);background:var(--accent);border-color:var(--accent);}
.faq-item.is-open .faq-q .ico::before{background:
  linear-gradient(var(--accent-ink),var(--accent-ink)) center/11px 1.6px no-repeat,
  linear-gradient(var(--accent-ink),var(--accent-ink)) center/1.6px 11px no-repeat;}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows var(--base) var(--ease);}
.faq-a > div{overflow:hidden;}
.faq-a p{margin:0;padding:0 22px 24px 62px;max-width:720px;color:var(--ink-soft);font-size:15.5px;line-height:1.8;}
.faq-item.is-open .faq-a{grid-template-rows:1fr;}
/* ============ 13 底部 CTA ============ */
.cta-band{background:var(--brand-deep);color:#fff;position:relative;overflow:hidden;}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;
  background:var(--accent);opacity:.12;transform:rotate(45deg);
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;padding:64px 0;flex-wrap:wrap;}
.cta-inner h2{color:#fff;font-size:clamp(22px,2.6vw,32px);margin-bottom:12px;}
.cta-inner p{color:rgba(255,255,255,.78);margin:0;max-width:620px;font-size:15.5px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
/* ============ 14 页脚 ============ */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.76);border-top:1px solid rgba(255,255,255,.16);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding:66px 0 44px;}
.footer-brand .logo{color:#fff;margin-bottom:18px;}
.footer-brand .logo-text small{color:rgba(255,255,255,.55);}
.footer-brand p{font-size:14px;line-height:1.85;margin:0;max-width:340px;}
.footer-col h4{font-size:14px;color:#fff;letter-spacing:.1em;margin-bottom:18px;font-weight:700;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.74);border-bottom:1px solid transparent;transition:color var(--base) var(--ease),border-color var(--base) var(--ease);}
.footer-col a:hover{color:var(--accent);border-bottom-color:var(--accent);}
.footer-col p{font-size:13.5px;margin:0 0 10px;line-height:1.7;}
.footer-col p b{color:#fff;font-weight:700;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 28px;border-top:1px solid rgba(255,255,255,.14);font-size:13px;color:rgba(255,255,255,.55);
}
/* ============ 15 响应式 ============ */
@media (max-width:1023px){
  html{scroll-padding-top:120px;}
  .sec{padding:80px 0;}
  .page-hero-inner{grid-template-columns:1fr;gap:36px;padding:56px 0 52px;}
  .hero-figure img{aspect-ratio:16/9;}
  .anchor-nav{position:static;}
  .entry-group{grid-template-columns:1fr 1fr;}
  .cross-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:56px 0 36px;}
  .header-search{display:none;position:absolute;top:66px;right:24px;width:min(320px,calc(100vw - 48px));z-index:90;box-shadow:var(--sh-2);}
  .header-search.is-open{display:flex;}
  .icon-btn{display:flex;}
}
@media (max-width:767px){
  body{font-size:16px;}
  html{scroll-padding-top:110px;}
  .grid-container{padding-left:16px;padding-right:16px;}
  .sec{padding:56px 0;}
  .sec-head{margin-bottom:32px;}
  .header-top-inner{height:64px;}
  .logo-text{font-size:15px;}
  .logo-text small{display:none;}
  .header-actions .btn-sm{display:none;}
  .menu-btn{display:flex;}
  .channel-scroll{height:46px;}
  .pill{height:32px;font-size:13px;padding:0 14px;}
  .page-hero h1{font-size:clamp(25px,7vw,32px);}
  .micro-stats > div{padding:0 14px;}
  .micro-stats b{font-size:19px;}
  .tl-item{grid-template-columns:38px 1fr;gap:16px;padding-bottom:32px;}
  .tl-node{width:38px;height:38px;font-size:12.5px;}
  .tl-item::before{left:18.5px;top:46px;}
  .stat-duo{grid-template-columns:1fr;gap:16px;margin-top:36px;}
  .stat-card{padding:24px;}
  .entry-group{grid-template-columns:1fr;}
  .cross-grid{grid-template-columns:1fr;}
  .cta-inner{padding:48px 0;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .faq-q{height:auto;padding:16px 18px;align-items:flex-start;}
  .faq-q .txt{font-size:15.5px;}
  .faq-a p{padding:0 18px 20px 18px;}
  /* 对比表转卡片 */
  .cmp-table{display:block;}
  .cmp-table thead{display:none;}
  .cmp-table tbody{display:block;}
  .cmp-table tr{display:block;border-bottom:1px solid var(--line);padding:6px 0;}
  .cmp-table tr:last-child{border-bottom:0;}
  .cmp-table td{display:flex;gap:14px;border:0;padding:10px 18px;width:auto!important;}
  .cmp-table td::before{content:attr(data-label);flex:0 0 66px;font-size:12px;color:var(--muted);font-weight:700;line-height:1.9;}
}
@media (max-width:479px){
  .hero-btns .btn{width:100%;}
  .micro-stats{gap:14px 0;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category4 */
:root{
  --brand:#123D2E;
  --brand-deep:#0A241B;
  --brand-soft:#E8F0E9;
  --accent:#C7F04A;
  --accent-ink:#22320A;
  --warn:#E4551F;
  --paper:#F7F5F0;
  --card:#FFFFFF;
  --ink:#14171A;
  --ink-soft:#3D423F;
  --muted:#7A756C;
  --line:#E4DFD4;
  --r-s:8px;
  --r-m:14px;
  --r-l:20px;
  --sh-1:0 1px 2px rgba(20,23,26,.05);
  --sh-2:0 22px 44px -26px rgba(18,61,46,.32);
  --ease:cubic-bezier(.22,.7,.2,1);
  --fast:160ms;
  --base:220ms;
  --slow:420ms;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Noto Sans SC",system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
h1,h2,h3,h4{line-height:1.25;font-weight:900;letter-spacing:-.01em}
a{color:var(--brand);text-decoration:none;transition:color var(--base) var(--ease),border-color var(--base) var(--ease)}
a:hover{color:var(--brand-deep)}
img{max-width:100%;display:block;height:auto}
ul,ol{list-style:none;padding:0}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto;width:100%}
@media (min-width:1440px){.grid-container{max-width:1280px}}
@media (max-width:767px){.grid-container{padding-left:16px;padding-right:16px}}

/* ---------- 头部 ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(247,245,240,.94);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.header-top{width:100%}
.header-top-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none}
.logo-mark{
  position:relative;flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:var(--brand);
  transform:rotate(45deg);
}
.logo-mark::after{
  content:"";position:absolute;inset:6px;border:2px solid var(--accent);
  border-right-color:transparent;border-bottom-color:transparent;border-radius:50%;
}
.logo-text{display:flex;flex-direction:column;font-size:17px;font-weight:900;color:var(--ink);line-height:1.2;letter-spacing:-.01em}
.logo-text small{font-size:12px;font-weight:500;color:var(--muted);letter-spacing:.06em;margin-top:3px}
.header-actions{display:flex;align-items:center;gap:12px}
.header-search{display:flex;align-items:center;background:#fff;border:1px solid var(--line);border-radius:999px;overflow:hidden;transition:border-color var(--base) var(--ease),box-shadow var(--base) var(--ease)}
.header-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(199,240,74,.35)}
.header-search input{border:0;background:transparent;height:40px;padding:0 8px 0 18px;width:220px;font-size:14px;outline:none;min-width:0}
.header-search input::placeholder{color:var(--muted)}
.header-search button{border:0;background:transparent;width:40px;height:40px;display:flex;align-items:center;justify-content:center;color:var(--brand);transition:background var(--base) var(--ease)}
.header-search button:hover{background:var(--brand-soft)}
.icon-btn{display:none;align-items:center;justify-content:center;width:40px;height:40px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--brand);transition:border-color var(--base) var(--ease),background var(--base) var(--ease)}
.icon-btn:hover{border-color:rgba(18,61,46,.35);background:var(--brand-soft)}
.icon-btn svg{width:16px;height:16px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;text-decoration:none;white-space:nowrap;
  transition:background var(--base) var(--ease),color var(--base) var(--ease),border-color var(--base) var(--ease),transform var(--fast) var(--ease);
}
.btn:hover{color:inherit}
.btn-solid{background:var(--brand);color:#fff}
.btn-solid:hover{background:var(--accent);color:var(--accent-ink)}
.btn-solid:active{transform:translateY(1px)}
.btn-accent{background:var(--accent);color:var(--accent-ink);font-weight:700}
.btn-accent:hover{background:#fff;color:var(--brand)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn-ghost:hover{background:#fff;color:var(--brand);border-color:#fff}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.channel-bar{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line);height:52px}
.channel-scroll{
  display:flex;align-items:center;gap:8px;height:52px;
  overflow-x:auto;scroll-snap-type:x proximity;scrollbar-width:none;-ms-overflow-style:none;
}
.channel-scroll::-webkit-scrollbar{display:none}
.pill{
  display:inline-flex;align-items:center;flex:0 0 auto;height:36px;padding:0 18px;
  border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--ink-soft);
  font-size:14px;font-weight:500;white-space:nowrap;scroll-snap-align:start;text-decoration:none;
  transition:background var(--base) var(--ease),color var(--base) var(--ease),border-color var(--base) var(--ease);
}
.pill:hover{background:var(--brand-soft);border-color:rgba(18,61,46,.35);color:var(--brand)}
.pill:active{transform:translateY(1px)}
.pill.is-active{background:var(--brand);border-color:var(--brand);color:#fff}
.pill.is-active:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff}

/* ---------- 子导航 ---------- */
.subnav{background:#fff;border-bottom:1px solid var(--line)}
.subnav .channel-scroll{height:auto;padding:12px 0;gap:8px}
.subnav .pill{height:34px;font-size:13.5px}

/* ---------- Hero ---------- */
.hero-cat{
  position:relative;overflow:hidden;color:#fff;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  padding:92px 0 76px;
}
.hero-cat::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(10,36,27,.88) 0%,rgba(18,61,46,.80) 58%,rgba(10,36,27,.72) 100%);
}
.hero-cat::after{
  content:"";position:absolute;top:0;right:0;width:min(46%,520px);height:100%;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.5) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:28px 28px;opacity:.06;
}
.hero-cat-inner{position:relative;z-index:1;max-width:820px}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;font-weight:700;letter-spacing:.22em;color:var(--accent);
  text-transform:uppercase;margin-bottom:20px;
}
.hero-eyebrow::before{content:"";width:28px;height:2px;background:var(--accent);display:block}
.hero-cat h1{font-size:clamp(30px,4.4vw,52px);font-weight:900;line-height:1.2;letter-spacing:-.02em;margin-bottom:22px}
.hero-lead{font-size:17px;line-height:1.9;color:rgba(255,255,255,.84);max-width:640px}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero-mini{display:flex;flex-wrap:wrap;margin-top:40px}
.hero-mini li{display:flex;flex-direction:column;gap:4px;padding:0 30px;border-left:1px solid rgba(255,255,255,.24)}
.hero-mini li:first-child{padding-left:0;border-left:0}
.hero-mini .mono{font-size:clamp(22px,2.6vw,30px);font-weight:700;color:var(--accent);line-height:1.2}
.hero-mini em{font-style:normal;font-size:13px;color:rgba(255,255,255,.7);letter-spacing:.04em}

/* ---------- 区块通用 ---------- */
.section{padding:96px 0}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:44px}
.eyebrow{
  font-size:12px;font-weight:700;letter-spacing:.2em;color:var(--warn);
  text-transform:uppercase;margin-bottom:14px;
}
.section-head h2{font-size:clamp(24px,3vw,38px);margin-bottom:16px}
.section-desc{font-size:16px;color:var(--ink-soft);line-height:1.85}
section[id]{scroll-margin-top:88px}

/* ---------- 问题卡片矩阵 ---------- */
.problem-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.problem-card{
  position:relative;display:flex;flex-direction:column;gap:10px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-m);
  padding:28px 26px 24px;box-shadow:var(--sh-1);text-decoration:none;color:inherit;
  transition:transform var(--base) var(--ease),box-shadow var(--base) var(--ease),border-color var(--base) var(--ease);
}
.problem-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(18,61,46,.35)}
.problem-card:active{transform:translateY(-1px)}
.problem-card .num{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--warn);letter-spacing:.14em}
.problem-card h3{font-size:18px;font-weight:700;line-height:1.4}
.problem-card p{font-size:14px;color:var(--ink-soft);line-height:1.75}
.problem-card .arrow{margin-top:auto;display:flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--brand);transition:transform var(--base) var(--ease)}
.problem-card:hover .arrow{transform:translateX(4px)}

/* ---------- 对照表 ---------- */
.table-wrap{
  overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:var(--r-m);
  -webkit-overflow-scrolling:touch;
}
table.cmp{width:100%;min-width:820px;border-collapse:collapse;font-size:15px}
table.cmp thead th{
  background:var(--brand-soft);color:var(--brand);text-align:left;font-weight:700;font-size:13.5px;
  letter-spacing:.04em;padding:15px 20px;border-bottom:1px solid var(--line);white-space:nowrap;
}
table.cmp tbody td{
  padding:18px 20px;border-bottom:1px solid var(--line);color:var(--ink-soft);
  vertical-align:top;line-height:1.75;
}
table.cmp tbody tr:last-child td{border-bottom:0}
table.cmp tbody tr{transition:background var(--base) var(--ease)}
table.cmp tbody tr:hover{background:#F2F7F2}
table.cmp th:first-child,table.cmp td:first-child{
  position:sticky;left:0;background:#fff;z-index:2;font-weight:700;color:var(--ink);
  box-shadow:1px 0 0 var(--line);white-space:nowrap;
}
table.cmp thead th:first-child{background:var(--brand-soft);z-index:3}
table.cmp tbody tr:hover td:first-child{background:#F2F7F2}
.cell-note{display:block;font-size:12.5px;color:var(--muted);margin-top:4px}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-size:12.5px;font-weight:600;white-space:nowrap;
}

/* ---------- 图文分栏 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split-media{border-radius:var(--r-l);overflow:hidden;background:var(--brand-soft);aspect-ratio:4/3}
.split-media img{width:100%;height:100%;object-fit:cover}
.step-list{border-top:1px solid var(--line)}
.step{display:flex;gap:20px;padding:22px 0;border-bottom:1px solid var(--line)}
.step:last-child{border-bottom:0}
.step-num{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--warn);padding-top:5px;flex:0 0 auto}
.step h4{font-size:17px;font-weight:700;margin-bottom:6px}
.step p{font-size:14.5px;color:var(--ink-soft);line-height:1.78}

/* ---------- 表格化 FAQ ---------- */
.faq-table{background:#fff;border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden}
table.faq{width:100%;border-collapse:collapse}
table.faq th{
  width:34%;text-align:left;vertical-align:top;padding:22px 24px;
  background:var(--brand-soft);color:var(--brand);font-size:15px;font-weight:700;line-height:1.6;
  border-bottom:1px solid var(--line);border-right:1px solid var(--line);
}
table.faq td{
  padding:22px 24px;border-bottom:1px solid var(--line);color:var(--ink-soft);
  font-size:15px;line-height:1.85;
}
table.faq tr:last-child th,table.faq tr:last-child td{border-bottom:0}

/* ---------- 交叉入口 ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.entry-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-m);overflow:hidden;text-decoration:none;color:inherit;
  transition:transform var(--base) var(--ease),box-shadow var(--base) var(--ease),border-color var(--base) var(--ease);
}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(18,61,46,.35)}
.entry-card figure{aspect-ratio:16/10;overflow:hidden;background:var(--brand-soft)}
.entry-card figure img{width:100%;height:100%;object-fit:cover;transition:transform var(--slow) var(--ease)}
.entry-card:hover figure img{transform:scale(1.04)}
.entry-body{padding:22px;display:flex;flex-direction:column;gap:8px;flex:1}
.entry-body h3{font-size:17px;font-weight:700}
.entry-body p{font-size:14px;color:var(--ink-soft);line-height:1.7}
.entry-body .arrow{margin-top:auto;font-size:13px;font-weight:600;color:var(--brand);transition:transform var(--base) var(--ease)}
.entry-card:hover .arrow{transform:translateX(4px)}

/* ---------- 表单 ---------- */
.form-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:start}
.issue-form{display:flex;flex-direction:column;gap:20px;background:#fff;border:1px solid var(--line);border-radius:var(--r-l);padding:32px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.form-field{display:flex;flex-direction:column;gap:8px}
.form-field label{font-size:13px;color:var(--muted);font-weight:500;letter-spacing:.02em}
.form-field .req{display:inline-block;width:5px;height:5px;border-radius:50%;background:var(--warn);margin-left:6px;vertical-align:middle}
.form-field input,.form-field select,.form-field textarea{
  width:100%;height:48px;padding:0 14px;background:#fff;color:var(--ink);
  border:1px solid var(--line);border-radius:var(--r-s);font-size:15px;
  transition:border-color var(--base) var(--ease),box-shadow var(--base) var(--ease);
}
.form-field textarea{height:auto;min-height:130px;padding:12px 14px;line-height:1.75;resize:vertical}
.form-field select{
  appearance:none;-webkit-appearance:none;
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%237A756C' stroke-width='2.2' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;background-size:16px;padding-right:42px;
}
.form-field input::placeholder,.form-field textarea::placeholder{color:var(--muted)}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(199,240,74,.35);
}
.form-field input:invalid:not(:placeholder-shown){border-color:var(--warn)}
.check-field{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--ink-soft);line-height:1.7}
.check-field input{width:18px;height:18px;margin-top:4px;accent-color:var(--brand);flex:0 0 auto}
.form-status{font-size:14px;color:var(--brand);min-height:22px}
.form-status.is-error{color:var(--warn)}
.trust-list{display:flex;flex-direction:column;gap:22px;padding-top:8px}
.trust-item{display:flex;gap:14px;align-items:flex-start}
.trust-icon{
  flex:0 0 auto;width:36px;height:36px;border-radius:10px;background:var(--brand-soft);
  display:flex;align-items:center;justify-content:center;color:var(--brand);
}
.trust-icon svg{width:18px;height:18px}
.trust-item h4{font-size:15.5px;font-weight:700;margin-bottom:4px}
.trust-item p{font-size:14px;color:var(--ink-soft);line-height:1.7}
.trust-note{
  background:var(--brand-soft);border-radius:var(--r-m);padding:20px 22px;
  font-size:14px;color:var(--brand);line-height:1.8;
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.74);border-top:1px solid var(--accent);padding:72px 0 0;margin-top:8px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:44px}
.footer-brand .logo{margin-bottom:18px}
.footer-brand .logo-text{color:#fff}
.footer-brand .logo-text small{color:rgba(255,255,255,.55)}
.footer-brand .logo-mark::after{border-color:var(--brand);border-right-color:transparent;border-bottom-color:transparent}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.68);max-width:340px}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px}
.footer-col p{font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.66);margin-bottom:10px}
.footer-col b{color:rgba(255,255,255,.88);font-weight:600}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.14);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .section{padding:76px 0}
  .problem-grid{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:36px}
  .form-grid{grid-template-columns:1fr;gap:40px}
  .entry-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .hero-cat{padding:76px 0 62px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .header-top-inner{height:64px;gap:12px}
  .logo-text{font-size:15.5px}
  .logo-text small{font-size:11px}
  .header-search{display:none;position:absolute;top:62px;left:16px;right:16px;z-index:60;box-shadow:var(--sh-2);background:#fff}
  .header-search.is-open{display:flex}
  .header-search input{flex:1;width:auto}
  .icon-btn{display:flex}
  .header-actions .btn-sm{display:none}
  .channel-bar{height:46px}
  .channel-scroll{height:46px}
  .pill{height:32px;padding:0 14px;font-size:13px}
  .subnav .channel-scroll{height:auto;padding:10px 0}
  .hero-cat{padding:60px 0 52px}
  .hero-lead{font-size:16px}
  .hero-mini{margin-top:32px}
  .hero-mini li{padding:0 18px}
  .hero-mini .mono{font-size:22px}
  .section{padding:56px 0}
  .section-head{margin-bottom:32px}
  .problem-grid{grid-template-columns:1fr;gap:16px}
  .entry-grid{grid-template-columns:1fr;gap:18px}
  .issue-form{padding:22px}
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .site-footer{padding:52px 0 0}
  .footer-bottom{flex-direction:column;align-items:flex-start;margin-top:36px}
  .split-media{aspect-ratio:16/11}
  /* 对照表转卡片 */
  table.cmp{min-width:0;border-collapse:separate}
  table.cmp thead{display:none}
  table.cmp tbody tr{
    display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-m);
    padding:8px 0 12px;margin-bottom:16px;
  }
  table.cmp tbody tr:hover{background:#fff}
  table.cmp tbody td{
    display:block;border-bottom:0;padding:8px 18px;
  }
  table.cmp tbody td::before{
    content:attr(data-label);display:block;font-size:12px;color:var(--muted);
    letter-spacing:.08em;margin-bottom:3px;
  }
  table.cmp tbody td:first-child{
    position:static;box-shadow:none;background:transparent;font-size:17px;font-weight:700;
    color:var(--ink);border-bottom:1px dashed var(--line);padding-bottom:12px;margin-bottom:6px;
    white-space:normal;
  }
  table.cmp tbody tr:hover td:first-child{background:transparent}
  /* FAQ 表格转堆叠 */
  table.faq,table.faq tbody,table.faq tr,table.faq th,table.faq td{display:block;width:100%}
  table.faq th{
    border-right:0;border-bottom:0;background:var(--brand-soft);
    padding:16px 18px 8px;font-size:15px;
  }
  table.faq td{padding:0 18px 18px;border-bottom:1px solid var(--line);background:var(--brand-soft)}
  table.faq tr:last-child td{border-bottom:0}
  table.faq tr:last-child th{border-bottom:0}
}
@media (max-width:479px){
  .hero-mini{gap:14px 0}
  .hero-mini li{padding:0 16px}
  .btn{width:100%}
  .btn-row{flex-direction:column;align-items:stretch}
  .hero-mini li:first-child{padding-left:0}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .problem-card:hover,.entry-card:hover{transform:none}
}