/* roulang page: index */
:root{
  --brand-900:#0B2F26; --brand-700:#10513F; --brand-500:#1B7A5A;
  --accent-500:#FF5A1F; --accent-600:#E8430B; --lime-400:#CDEB4F;
  --bg:#F6F4EF; --surface:#FFFFFF; --surface-2:#EEF3EF;
  --ink:#12211C; --muted:#5F706A; --line:#E3E0D6;
  --radius-lg:24px; --radius-md:16px; --radius-sm:10px; --pill:999px;
  --shadow-1:0 1px 2px rgba(11,47,38,.06),0 12px 28px -14px rgba(11,47,38,.20);
  --shadow-2:0 2px 4px rgba(11,47,38,.08),0 24px 48px -20px rgba(11,47,38,.28);
  --brand-grad:linear-gradient(135deg,#0B2F26 0%,#10513F 52%,#1B7A5A 100%);
  --action-grad:linear-gradient(135deg,#FF5A1F,#E8430B);
  --shell:1200px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
html,body{margin:0;padding:0}
.page-body{
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
.page-body img{max-width:100%;display:block;border:0}
.page-body a{color:var(--brand-700);text-decoration:none;transition:color .2s ease}
.page-body a:hover{color:var(--accent-600)}
.page-body button{font-family:inherit}
.page-body input,.page-body select,.page-body textarea{font-family:inherit;font-size:15px;color:var(--ink)}
.tabular{font-variant-numeric:tabular-nums}
.shell{width:100%;max-width:var(--shell);margin:0 auto;padding:0 20px}
@media (min-width:768px){.shell{padding:0 32px}}
@media (min-width:1280px){.shell{max-width:1280px}}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--pill);
  font-size:15px;font-weight:700;line-height:1;cursor:pointer;
  border:1px solid transparent;transition:all .22s ease;white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px}
.btn-primary{background:var(--action-grad);color:#fff;box-shadow:0 10px 22px -12px rgba(232,67,11,.85),inset 0 1px 0 rgba(255,255,255,.28)}
.btn-primary:hover{filter:brightness(1.07);transform:translateY(-1px);color:#fff}
.btn-outline{background:#fff;color:var(--brand-700);border-color:var(--brand-700)}
.btn-outline:hover{background:var(--surface-2);transform:translateY(-1px);color:var(--brand-900)}
.btn-outline-light{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.62)}
.btn-outline-light:hover{background:rgba(255,255,255,.20);transform:translateY(-1px);color:#fff}
.btn-ghost{background:transparent;color:var(--brand-700);padding:0 10px;border-bottom:1px dashed transparent;border-radius:6px}
.btn-ghost:hover{color:var(--accent-600);border-bottom-color:var(--accent-500)}
.btn-lg{height:54px;padding:0 28px;font-size:16px}
.btn-block{width:100%}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 12px;border-radius:var(--pill);
  font-size:12.5px;font-weight:700;letter-spacing:.02em;
}
.badge-light{background:var(--surface-2);color:var(--brand-700)}
.badge-dark{background:rgba(11,47,38,.86);color:var(--lime-400);border:1px solid rgba(205,235,79,.34)}
.badge-accent{background:rgba(255,90,31,.12);color:var(--accent-600)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:800;letter-spacing:.16em;color:var(--brand-500);
  text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent-500);border-radius:2px}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(246,244,239,.88);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:18px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;border-radius:11px;background:var(--brand-grad);
  display:grid;place-items:center;color:var(--lime-400);
  box-shadow:inset 0 0 0 1px rgba(205,235,79,.30);
}
.brand-text{font-size:17px;font-weight:800;color:var(--brand-900);letter-spacing:.01em;white-space:nowrap}
.brand-text:hover{color:var(--brand-700)}
.nav-links{display:none;align-items:center;gap:2px;margin-left:6px}
@media (min-width:1024px){.nav-links{display:flex}}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  height:38px;padding:0 13px;border-radius:10px;
  font-size:15px;font-weight:600;color:#2E4239;
}
.nav-link:hover{background:var(--surface-2);color:var(--brand-700)}
.nav-link.is-active{color:var(--brand-900);font-weight:800}
.nav-link.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:-1px;height:2px;
  background:var(--accent-500);border-radius:2px;
}
.nav-tools{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-search{position:relative;display:none}
@media (min-width:1024px){.nav-search{display:block}}
.nav-search svg{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:var(--muted);pointer-events:none}
.nav-search input{
  width:238px;height:40px;padding:0 14px 0 38px;
  border:1px solid var(--line);border-radius:var(--pill);background:#fff;
  outline:none;transition:all .2s ease;
}
.nav-search input::placeholder{color:#93A29B}
.nav-search input:focus{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(27,122,90,.16)}
.nav-cta{display:none}
@media (min-width:1024px){.nav-cta{display:inline-flex}}
.nav-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;cursor:pointer;color:var(--brand-900);
}
.nav-toggle:hover{background:var(--surface-2)}
@media (min-width:1024px){.nav-toggle{display:none}}
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,47,38,.42);z-index:90;
  opacity:0;pointer-events:none;transition:opacity .28s ease;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,88vw);z-index:100;
  background:#fff;border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .3s ease;
  padding:22px 20px 32px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{
  width:40px;height:40px;border-radius:11px;border:1px solid var(--line);
  background:#fff;display:grid;place-items:center;cursor:pointer;color:var(--brand-900);
}
.drawer-nav{display:flex;flex-direction:column;gap:2px;margin:6px 0 18px}
.drawer-nav a{
  min-height:48px;display:flex;align-items:center;padding:0 12px;border-radius:12px;
  font-size:15.5px;font-weight:600;color:#2E4239;
}
.drawer-nav a:hover{background:var(--surface-2);color:var(--brand-700)}
.drawer-nav a.is-active{background:var(--surface-2);color:var(--brand-900);font-weight:800}
.drawer-search input{
  width:100%;height:46px;padding:0 16px;border-radius:12px;
  border:1px solid var(--line);background:#fff;outline:none;
}
.drawer-search input:focus{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(27,122,90,.16)}
.drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:18px}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;color:#fff;isolation:isolate}
.hero-bg{
  position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;background-color:#0B2F26;
}
.hero-veil{
  position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(11,47,38,.93) 0%,rgba(16,81,63,.87) 50%,rgba(27,122,90,.78) 100%);
}
.hero-veil::after{
  content:"";position:absolute;inset:0;opacity:.30;
  background-image:repeating-linear-gradient(115deg,rgba(205,235,79,.16) 0 1px,transparent 1px 34px);
}
.hero-inner{position:relative;z-index:2;padding:74px 0 68px}
@media (min-width:768px){.hero-inner{padding:104px 0 92px}}
.hero-kicker{
  display:inline-flex;align-items:center;gap:8px;
  height:32px;padding:0 14px;border-radius:var(--pill);
  background:rgba(255,255,255,.12);border:1px solid rgba(205,235,79,.42);
  color:var(--lime-400);font-size:13px;font-weight:700;letter-spacing:.06em;
}
.hero-title{
  margin:22px 0 0;font-size:clamp(34px,4.6vw,58px);line-height:1.2;font-weight:800;
  letter-spacing:-.01em;max-width:19em;
}
.hero-sub{margin:18px 0 0;font-size:clamp(16px,1.5vw,19px);line-height:1.65;color:rgba(255,255,255,.9);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-stats{
  list-style:none;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:12px;margin:40px 0 0;padding:0;max-width:760px;
}
@media (min-width:768px){.hero-stats{grid-template-columns:repeat(4,minmax(0,1fr))}}
.hero-stats li{
  display:flex;flex-direction:column;gap:2px;
  padding:14px 16px;border-radius:var(--radius-md);
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.20);
}
.stat-line{display:flex;align-items:baseline;gap:4px}
.stat-num{font-size:24px;font-weight:800;color:#fff;line-height:1.1}
.stat-unit{font-size:13px;font-weight:700;color:var(--lime-400)}
.stat-label{font-size:12.5px;color:rgba(255,255,255,.80)}

/* ============ 板块 ============ */
.section{padding:56px 0}
@media (min-width:768px){.section{padding:88px 0}}
.section-tight{padding:44px 0}
@media (min-width:768px){.section-tight{padding:64px 0}}
.section-head{max-width:760px}
.section-head.center{margin:0 auto;text-align:center}
.section-title{
  margin:14px 0 0;font-size:clamp(26px,2.6vw,36px);line-height:1.3;font-weight:800;color:var(--brand-900);
}
.section-desc{margin:14px 0 0;font-size:16px;color:var(--muted);line-height:1.8}
.head-row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px}

/* ============ 快速入口条 ============ */
.entry-bar{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);overflow:hidden;
}
.entry-row{
  display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:16px;
  padding:20px 22px;border-top:1px solid var(--line);
  transition:background .22s ease;
}
.entry-row:first-child{border-top:0}
.entry-row:hover{background:var(--surface-2)}
.entry-icon{
  width:44px;height:44px;border-radius:13px;background:var(--surface-2);
  display:grid;place-items:center;color:var(--brand-700);flex:0 0 auto;
}
.entry-title{margin:0;font-size:17px;font-weight:800;color:var(--brand-900)}
.entry-note{margin:3px 0 0;font-size:14px;color:var(--muted)}
.entry-arrow{color:var(--brand-500);transition:transform .22s ease}
.entry-row:hover .entry-arrow{transform:translateX(5px)}
@media (max-width:560px){
  .entry-row{grid-template-columns:auto 1fr;padding:18px}
  .entry-arrow{display:none}
}

/* ============ 登录阶梯 ============ */
.steps-track{position:relative;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;margin-top:40px}
.steps-track::before{
  content:"";position:absolute;left:0;right:0;top:38px;height:2px;
  background:linear-gradient(90deg,rgba(27,122,90,.35),rgba(255,90,31,.45));
}
.step-card{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-md);padding:22px;box-shadow:var(--shadow-1);
  transition:all .26s ease;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(27,122,90,.35)}
.step-index{
  width:40px;height:40px;border-radius:50%;display:grid;place-items:center;
  font-size:16px;font-weight:800;background:var(--surface-2);color:var(--brand-700);
  border:2px solid #fff;box-shadow:0 0 0 1px var(--line);
}
.step-card.is-active{background:var(--action-grad);border-color:transparent;color:#fff}
.step-card.is-active .step-index{background:#fff;color:var(--accent-600);box-shadow:none;border-color:#fff}
.step-card.is-active .step-title{color:#fff}
.step-card.is-active .step-text{color:rgba(255,255,255,.92)}
.step-card.is-active .step-tag{background:rgba(255,255,255,.20);color:#fff}
.step-title{margin:16px 0 0;font-size:18px;font-weight:800;color:var(--brand-900)}
.step-text{margin:8px 0 0;font-size:14.5px;color:var(--muted);line-height:1.75}
.step-tag{
  display:inline-flex;margin-top:14px;height:26px;align-items:center;padding:0 11px;
  border-radius:var(--pill);font-size:12.5px;font-weight:700;
  background:var(--surface-2);color:var(--brand-700);
}
@media (max-width:900px){
  .steps-track{grid-template-columns:1fr;gap:16px}
  .steps-track::before{left:19px;right:auto;top:0;bottom:0;width:2px;height:auto}
  .step-card{margin-left:38px}
  .step-index{position:absolute;left:-38px;top:22px;margin-left:-20px}
}

/* ============ 账号类型对比 ============ */
.plan-grid{display:grid;grid-template-columns:1.35fr 1.35fr 1fr;gap:22px;margin-top:40px;align-items:start}
.plan-card{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow-1);
  display:flex;flex-direction:column;transition:all .26s ease;
}
.plan-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(27,122,90,.35)}
.plan-card.recommend{background:linear-gradient(180deg,#fff 0%,#F3F7F4 100%);border-color:rgba(27,122,90,.42);box-shadow:var(--shadow-2)}
.plan-ribbon{
  position:absolute;top:-13px;left:26px;height:26px;display:inline-flex;align-items:center;
  padding:0 13px;border-radius:var(--pill);background:var(--action-grad);color:#fff;
  font-size:12.5px;font-weight:800;letter-spacing:.04em;
}
.plan-name{margin:0;font-size:21px;font-weight:800;color:var(--brand-900)}
.plan-note{margin:8px 0 0;font-size:14px;color:var(--muted);line-height:1.75;min-height:44px}
.plan-price{display:flex;align-items:baseline;gap:6px;margin:18px 0 0}
.plan-price .num{font-size:38px;font-weight:800;color:var(--brand-900);line-height:1}
.plan-price .unit{font-size:13.5px;color:var(--muted)}
.plan-divider{height:1px;background:var(--line);margin:20px 0}
.feat-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:11px}
.feat-list li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:#324740}
.feat-list .mark{
  flex:0 0 auto;width:19px;height:19px;border-radius:6px;display:grid;place-items:center;
  background:rgba(27,122,90,.13);color:var(--brand-700);font-size:12px;font-weight:800;margin-top:3px;
}
.feat-list .mark.no{background:rgba(95,112,106,.13);color:var(--muted)}
.plan-foot{margin-top:auto;padding-top:24px}
.plan-card.narrow .plan-name{font-size:18px}
.plan-card.narrow .plan-price .num{font-size:28px}
@media (max-width:980px){
  .plan-grid{grid-template-columns:1fr 1fr}
  .plan-card.narrow{grid-column:span 2}
}
@media (max-width:680px){
  .plan-grid{grid-template-columns:1fr}
  .plan-card.narrow{grid-column:auto}
}

/* ============ 限时入口条带 ============ */
.promo-band{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  background:var(--brand-grad);color:#fff;padding:30px 32px;
  box-shadow:var(--shadow-2);border:1px solid rgba(205,235,79,.34);
  display:grid;grid-template-columns:1fr auto;gap:26px;align-items:center;
}
.promo-band::after{
  content:"";position:absolute;inset:0;opacity:.24;pointer-events:none;
  background-image:radial-gradient(circle at 88% 18%,rgba(205,235,79,.5) 0 2px,transparent 2px 100%);
  background-size:26px 26px;
}
.promo-tag{
  display:inline-flex;align-items:center;gap:7px;height:28px;padding:0 12px;
  border-radius:var(--pill);background:rgba(205,235,79,.18);border:1px solid rgba(205,235,79,.5);
  color:var(--lime-400);font-size:12.5px;font-weight:800;letter-spacing:.05em;
}
.promo-title{margin:14px 0 0;font-size:clamp(21px,2.1vw,28px);font-weight:800;position:relative;z-index:2}
.promo-text{margin:8px 0 0;font-size:14.5px;color:rgba(255,255,255,.86);position:relative;z-index:2;max-width:46em}
.promo-right{display:flex;flex-wrap:wrap;align-items:center;gap:18px;position:relative;z-index:2}
.countdown{display:flex;align-items:center;gap:8px}
.cd-cell{
  min-width:62px;padding:8px 10px;border-radius:12px;text-align:center;
  background:rgba(255,255,255,.13);border:1px solid rgba(205,235,79,.46);
}
.cd-num{display:block;font-size:22px;font-weight:800;line-height:1.15;color:#fff}
.cd-cap{display:block;font-size:11.5px;color:rgba(255,255,255,.78)}
.cd-sep{font-size:20px;font-weight:800;color:rgba(205,235,79,.85)}
@media (max-width:980px){
  .promo-band{grid-template-columns:1fr;padding:26px 22px}
  .promo-right{justify-content:flex-start}
}
@media (max-width:430px){
  .countdown{gap:5px}
  .cd-cell{min-width:54px;padding:6px 7px}
  .cd-num{font-size:19px}
}

/* ============ CMS 资讯卡 ============ */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:38px}
@media (max-width:1024px){.post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:680px){.post-grid{grid-template-columns:1fr}}
.post-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:all .26s ease;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(27,122,90,.35)}
.post-cover{
  display:block;aspect-ratio:16/9;background:var(--surface-2);overflow:hidden;
}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.post-card:hover .post-cover img{transform:scale(1.05)}
.post-body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1}
.post-card h3{margin:12px 0 0;font-size:17.5px;line-height:1.5;font-weight:800;color:var(--brand-900)}
.post-card h3 a{color:inherit;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card h3 a:hover{color:var(--brand-700)}
.post-excerpt{
  margin:10px 0 0;font-size:14.5px;color:var(--muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{
  margin-top:18px;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.post-meta{font-size:13px;color:var(--muted)}
.post-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--brand-700)}
.post-more svg{transition:transform .22s ease}
.post-more:hover svg{transform:translateX(4px)}
.empty-state{
  margin-top:38px;background:var(--surface-2);border:1px dashed #C8D4CD;border-radius:var(--radius-lg);
  padding:52px 24px;text-align:center;
}
.empty-icon{
  width:56px;height:56px;margin:0 auto 16px;border-radius:18px;background:#fff;
  display:grid;place-items:center;color:var(--brand-500);box-shadow:var(--shadow-1);
}
.empty-title{margin:0;font-size:17px;font-weight:800;color:var(--brand-900)}
.empty-note{margin:8px auto 20px;max-width:34em;font-size:14.5px;color:var(--muted)}

/* ============ 图文安全自查 ============ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split.rev .split-media{order:2}
.split-media{position:relative}
.split-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-lg);
  border:1px solid var(--line);box-shadow:var(--shadow-1);background:var(--surface-2);
}
.split-media::before{
  content:"";position:absolute;inset:auto -14px -14px auto;width:120px;height:120px;
  border-radius:24px;background:rgba(205,235,79,.30);z-index:-1;
}
.split-list{list-style:none;margin:22px 0 0;padding:0;display:flex;flex-direction:column;gap:14px}
.split-list li{display:flex;gap:12px;align-items:flex-start}
.dot{
  flex:0 0 auto;width:10px;height:10px;border-radius:3px;background:var(--accent-500);margin-top:8px;
}
.split-list strong{display:block;font-size:15.5px;color:var(--brand-900);font-weight:800}
.split-list span{display:block;font-size:14.5px;color:var(--muted);line-height:1.75}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
@media (max-width:900px){
  .split{grid-template-columns:1fr;gap:28px}
  .split.rev .split-media{order:0}
}

/* ============ 表单 ============ */
.form-layout{display:grid;grid-template-columns:5fr 7fr;gap:34px;align-items:start}
.form-side{
  background:var(--brand-grad);color:#fff;border-radius:var(--radius-lg);padding:32px;
  position:relative;overflow:hidden;border:1px solid rgba(205,235,79,.30);
}
.form-side::after{
  content:"";position:absolute;right:-40px;bottom:-40px;width:180px;height:180px;border-radius:50%;
  background:rgba(205,235,79,.14);
}
.form-side h3{margin:16px 0 0;font-size:22px;font-weight:800;position:relative;z-index:2}
.form-side p{margin:12px 0 0;font-size:14.5px;color:rgba(255,255,255,.86);line-height:1.8;position:relative;z-index:2}
.side-list{list-style:none;margin:22px 0 0;padding:0;display:flex;flex-direction:column;gap:12px;position:relative;z-index:2}
.side-list li{display:flex;gap:10px;align-items:center;font-size:14.5px;color:rgba(255,255,255,.94)}
.side-list .tick{
  width:20px;height:20px;border-radius:50%;background:rgba(205,235,79,.22);
  border:1px solid rgba(205,235,79,.5);display:grid;place-items:center;
  color:var(--lime-400);font-size:12px;font-weight:800;flex:0 0 auto;
}
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:30px;box-shadow:var(--shadow-1);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1/-1}
.field label{font-size:14px;font-weight:700;color:var(--brand-900)}
.field .req{color:var(--accent-600)}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:12px;
  background:#fff;outline:none;transition:all .2s ease;
}
.field textarea{height:auto;min-height:132px;padding:12px 14px;line-height:1.7;resize:vertical}
.field select{
  appearance:none;-webkit-appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%235F706A' stroke-width='2.4' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;padding-right:40px;
}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(27,122,90,.16);
}
.field input.err,.field textarea.err{border-color:var(--accent-600);box-shadow:0 0 0 3px rgba(232,67,11,.12)}
.agree{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--muted);line-height:1.7}
.agree input{width:18px;height:18px;accent-color:var(--brand-500);margin-top:3px;flex:0 0 auto}
.form-hint{margin:14px 0 0;font-size:13.5px;color:var(--brand-700);font-weight:600;display:none}
.form-hint.show{display:block}
@media (max-width:980px){.form-layout{grid-template-columns:1fr}}
@media (max-width:620px){.form-grid{grid-template-columns:1fr}.form-card{padding:22px}}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:34px auto 0;display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
  overflow:hidden;transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item[open]{border-color:rgba(27,122,90,.38);box-shadow:var(--shadow-1)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:19px 22px;font-size:16.5px;font-weight:700;color:var(--brand-900);
  min-height:56px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:var(--surface-2)}
.faq-arrow{
  flex:0 0 auto;width:30px;height:30px;border-radius:50%;background:var(--surface-2);
  display:grid;place-items:center;color:var(--brand-700);transition:transform .28s ease;
}
.faq-item[open] .faq-arrow{transform:rotate(180deg);background:rgba(255,90,31,.12);color:var(--accent-600)}
.faq-answer{
  padding:0 22px 22px 22px;font-size:15px;color:var(--muted);line-height:1.85;
  border-left:3px solid var(--accent-500);margin-left:22px;
}
.faq-answer p{margin:0 0 10px}
.faq-answer p:last-child{margin-bottom:0}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;background:var(--brand-900);color:rgba(255,255,255,.78);
  margin-top:20px;padding:56px 0 26px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--lime-400),var(--brand-500),var(--accent-500));
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:34px}
@media (max-width:900px){.footer-grid{grid-template-columns:1fr 1fr;gap:28px}}
@media (max-width:560px){.footer-grid{grid-template-columns:1fr}}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-brand .brand-text{color:#fff}
.footer-desc{margin:16px 0 0;font-size:14px;color:rgba(255,255,255,.68);line-height:1.85;max-width:36em}
.footer-col h4{margin:0 0 14px;font-size:14.5px;font-weight:800;color:#fff;letter-spacing:.03em}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:var(--lime-400)}
.footer-col li span{font-size:14px;color:rgba(255,255,255,.72)}
.footer-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(255,255,255,.58);
}
@media (max-width:560px){.footer-bottom{flex-direction:column;align-items:flex-start}}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:22px;bottom:26px;z-index:80;
  width:48px;height:48px;border-radius:50%;border:0;cursor:pointer;
  background:var(--brand-grad);color:#fff;display:grid;place-items:center;
  box-shadow:var(--shadow-2);opacity:0;pointer-events:none;transition:all .3s ease;
}
.to-top.is-on{opacity:1;pointer-events:auto}
.to-top:hover{transform:translateY(-3px);filter:brightness(1.08)}
.to-top:focus-visible{outline:2px solid var(--accent-500);outline-offset:3px}
@media (max-width:560px){.to-top{right:14px;bottom:16px;width:44px;height:44px}}

/* roulang page: article */
:root{
    --brand-900:#0B2F26;
    --brand-700:#10513F;
    --brand-500:#1B7A5A;
    --accent-500:#FF5A1F;
    --accent-600:#E8430B;
    --lime-400:#CDEB4F;
    --bg:#F6F4EF;
    --surface:#FFFFFF;
    --surface-2:#EEF3EF;
    --ink:#12211C;
    --muted:#5F706A;
    --line:#E3E0D6;
    --radius-lg:24px;
    --radius-md:16px;
    --radius-sm:10px;
    --pill:999px;
    --shadow-1:0 1px 2px rgba(11,47,38,.06),0 12px 28px -14px rgba(11,47,38,.20);
    --shadow-2:0 2px 4px rgba(11,47,38,.08),0 24px 48px -20px rgba(11,47,38,.28);
    --grad-brand:linear-gradient(135deg,#0B2F26 0%,#10513F 52%,#1B7A5A 100%);
    --grad-action:linear-gradient(135deg,#FF5A1F,#E8430B);
    --font-stack:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:var(--font-stack);
    font-size:16px;
    line-height:1.75;
    color:var(--ink);
    background-color:var(--bg);
    background-image:radial-gradient(rgba(11,47,38,.05) 1px,transparent 1px);
    background-size:22px 22px;
  }
  img{max-width:100%;display:block}
  a{color:var(--brand-700);text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease}
  button,input,select,textarea{font:inherit;color:inherit}
  h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:800;color:var(--brand-900)}
  ul,ol{margin:0;padding:0}
  :focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:4px}
  .num{font-variant-numeric:tabular-nums}

  .shell{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(246,244,239,.9);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);
  }
  .nav-wrap{display:flex;align-items:center;gap:18px;min-height:68px}
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
  .brand-mark{
    width:38px;height:38px;border-radius:12px;
    background:var(--grad-brand);
    color:var(--lime-400);
    display:grid;place-items:center;
    box-shadow:0 8px 18px -10px rgba(11,47,38,.85);
  }
  .brand-text{font-weight:800;font-size:17px;letter-spacing:.01em;color:var(--brand-900);white-space:nowrap}
  .nav-links{display:flex;align-items:center;gap:2px;margin-left:6px}
  .nav-link{
    position:relative;padding:9px 12px;border-radius:10px;
    font-size:15px;font-weight:600;color:var(--muted);
    display:inline-flex;align-items:center;
  }
  .nav-link:hover{color:var(--brand-900);background:var(--surface-2)}
  .nav-link.is-active{color:var(--brand-900);font-weight:800}
  .nav-link.is-active::after{
    content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
    border-radius:2px;background:var(--accent-500);
  }
  .nav-tools{margin-left:auto;display:flex;align-items:center;gap:10px}
  .nav-search{
    display:flex;align-items:center;gap:8px;
    height:40px;width:230px;padding:0 14px;
    background:#fff;border:1px solid var(--line);border-radius:var(--pill);
    color:var(--muted);
    transition:border-color .2s ease,box-shadow .2s ease;
  }
  .nav-search:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(27,122,90,.14)}
  .nav-search input{border:0;outline:0;background:transparent;width:100%;font-size:14px}
  .nav-toggle{
    display:none;width:42px;height:42px;border-radius:12px;
    border:1px solid var(--line);background:#fff;color:var(--brand-900);
    align-items:center;justify-content:center;cursor:pointer;
  }
  .nav-toggle:hover{background:var(--surface-2)}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:42px;padding:0 20px;border-radius:var(--pill);
    font-size:14.5px;font-weight:700;border:1px solid transparent;
    cursor:pointer;white-space:nowrap;
    transition:transform .18s ease,box-shadow .2s ease,filter .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  }
  .btn-primary{background:var(--grad-action);color:#fff;box-shadow:0 12px 22px -14px rgba(232,67,11,.95)}
  .btn-primary:hover{filter:brightness(1.07);transform:translateY(-1px);color:#fff}
  .btn-primary:active{transform:translateY(0)}
  .btn-outline{background:#fff;color:var(--brand-700);border-color:rgba(16,81,63,.34)}
  .btn-outline:hover{border-color:var(--brand-500);background:var(--surface-2);color:var(--brand-900);transform:translateY(-1px)}
  .btn-ghost{background:transparent;color:var(--brand-700)}
  .btn-ghost:hover{text-decoration:underline;text-underline-offset:6px;color:var(--brand-900)}
  .btn-lime{background:var(--lime-400);color:var(--brand-900)}
  .btn-lime:hover{filter:brightness(1.05);transform:translateY(-1px)}

  /* ---------- 面包屑与文章头部 ---------- */
  .article-hero{
    position:relative;color:#fff;
    padding:44px 0 60px;
    background-image:linear-gradient(135deg,rgba(11,47,38,.94) 0%,rgba(16,81,63,.9) 55%,rgba(27,122,90,.84) 100%),url('/assets/images/backpic/back-2.webp');
    background-size:cover,cover;
    background-position:center,center;
    background-repeat:no-repeat,no-repeat;
    background-color:var(--brand-900);
    overflow:hidden;
  }
  .article-hero::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:repeating-linear-gradient(135deg,rgba(205,235,79,.07) 0 2px,transparent 2px 13px);
  }
  .article-hero .shell{position:relative;z-index:1}
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.72)}
  .breadcrumb a{color:rgba(255,255,255,.86)}
  .breadcrumb a:hover{color:var(--lime-400)}
  .breadcrumb .crumb-sep{color:rgba(255,255,255,.45)}
  .breadcrumb .crumb-now{color:#fff;font-weight:600}
  .badge-cat{
    display:inline-flex;align-items:center;gap:7px;
    margin-top:20px;padding:6px 14px;border-radius:var(--pill);
    background:rgba(205,235,79,.16);border:1px solid rgba(205,235,79,.45);
    color:var(--lime-400);font-size:13px;font-weight:700;
  }
  .article-title{
    margin:16px 0 18px;color:#fff;font-size:clamp(30px,4vw,50px);
    line-height:1.24;letter-spacing:.005em;max-width:24em;
  }
  .meta-row{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:14px;color:rgba(255,255,255,.82)}
  .meta-row span{display:inline-flex;align-items:center;gap:7px}
  .meta-row svg{opacity:.8}

  /* ---------- 正文区 ---------- */
  .article-body{padding:56px 0 20px}
  .article-layout{display:grid;grid-template-columns:minmax(0,1fr) 316px;gap:34px;align-items:start}
  .article-main{
    background:var(--surface);border:1px solid var(--line);
    border-radius:var(--radius-lg);box-shadow:var(--shadow-1);
    padding:clamp(22px,3vw,46px);
  }

  .prose-cn{max-width:780px;font-size:16.5px;line-height:1.85;color:#1B2B25}
  .prose-cn > *:first-child{margin-top:0}
  .prose-cn p{margin:0 0 1.4em}
  .prose-cn h2{
    font-size:clamp(22px,2.2vw,28px);font-weight:800;line-height:1.35;
    margin:1.9em 0 .75em;padding-left:14px;border-left:4px solid var(--brand-500);
  }
  .prose-cn h3{font-size:19px;font-weight:700;margin:1.6em 0 .6em;color:var(--brand-900)}
  .prose-cn ul,.prose-cn ol{margin:0 0 1.4em;padding-left:1.35em}
  .prose-cn li{margin:.5em 0;line-height:1.82}
  .prose-cn ul li::marker{color:var(--brand-500)}
  .prose-cn ol li::marker{color:var(--brand-700);font-weight:700}
  .prose-cn blockquote{
    margin:1.6em 0;padding:16px 20px;background:var(--surface-2);
    border-left:3px solid var(--lime-400);
    border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:#25423A;
  }
  .prose-cn blockquote p:last-child{margin-bottom:0}
  .prose-cn img{border-radius:16px;margin:1.6em auto;box-shadow:var(--shadow-1);height:auto}
  .prose-cn figure{margin:1.6em 0}
  .prose-cn figcaption{text-align:center;font-size:13px;color:var(--muted);margin-top:8px}
  .prose-cn table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;display:block;overflow-x:auto}
  .prose-cn th,.prose-cn td{border:1px solid var(--line);padding:10px 14px;text-align:left;vertical-align:top}
  .prose-cn th{background:rgba(27,122,90,.1);font-weight:700;color:var(--brand-900)}
  .prose-cn tbody tr:nth-child(even){background:#FAF9F4}
  .prose-cn pre{
    background:var(--brand-900);color:#E9F6EF;padding:18px 20px;
    border-radius:var(--radius-md);overflow-x:auto;font-size:14px;line-height:1.7;
  }
  .prose-cn code{background:var(--surface-2);padding:2px 6px;border-radius:6px;font-size:.94em}
  .prose-cn pre code{background:transparent;padding:0;color:inherit}
  .prose-cn a{color:var(--brand-700);text-decoration:underline;text-underline-offset:4px}
  .prose-cn hr{border:0;border-top:1px dashed var(--line);margin:2.2em 0}

  .empty-state{
    background:var(--surface-2);border:1px dashed var(--line);
    border-radius:var(--radius-lg);padding:44px 24px;text-align:center;
  }
  .empty-icon{
    width:56px;height:56px;margin:0 auto 16px;border-radius:18px;
    background:#fff;color:var(--brand-500);display:grid;place-items:center;
    box-shadow:var(--shadow-1);
  }
  .empty-title{font-size:20px;font-weight:800;color:var(--brand-900);margin:0 0 8px}
  .empty-text{font-size:14.5px;color:var(--muted);margin:0 auto 20px;max-width:44ch}

  .article-actions{
    display:flex;flex-wrap:wrap;gap:12px;align-items:center;
    margin-top:36px;padding-top:26px;border-top:1px dashed var(--line);
  }

  /* ---------- 侧栏 ---------- */
  .article-side{display:grid;gap:18px}
  .widget{
    background:var(--surface);border:1px solid var(--line);
    border-radius:var(--radius-md);padding:22px;box-shadow:var(--shadow-1);
  }
  .widget h3{font-size:16px;font-weight:800;margin-bottom:14px}
  .widget-list{display:grid;gap:2px}
  .widget-list a{
    display:flex;align-items:center;gap:10px;min-height:44px;
    padding:8px 10px;border-radius:12px;font-size:14.5px;font-weight:600;color:var(--brand-900);
  }
  .widget-list a:hover{background:var(--surface-2);color:var(--brand-700)}
  .widget-list .dot{width:7px;height:7px;border-radius:2px;background:var(--brand-500);flex-shrink:0}
  .widget-dark{
    background:var(--grad-brand);border-color:rgba(205,235,79,.35);color:#fff;
    position:relative;overflow:hidden;
  }
  .widget-dark::after{
    content:"";position:absolute;right:-30px;bottom:-40px;width:130px;height:130px;
    border-radius:50%;background:radial-gradient(circle,rgba(205,235,79,.22),transparent 68%);
  }
  .widget-dark h3{color:#fff;position:relative;z-index:1}
  .widget-dark p{position:relative;z-index:1;font-size:14px;line-height:1.8;color:rgba(255,255,255,.82);margin:0 0 16px}
  .widget-dark .btn{position:relative;z-index:1;width:100%}
  .badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:4px}
  .stat-badge{
    display:inline-flex;align-items:center;gap:8px;
    padding:8px 14px;border-radius:var(--pill);
    background:var(--surface-2);color:var(--brand-700);
    font-size:13px;font-weight:700;
  }
  .stat-badge .num{font-size:17px;font-weight:800;color:var(--brand-900)}

  /* ---------- 相关推荐 ---------- */
  .related{padding:56px 0 0}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px}
  .kicker{
    display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
    color:var(--brand-500);letter-spacing:.08em;margin-bottom:10px;
  }
  .kicker::before{content:"";width:22px;height:2px;background:var(--accent-500);border-radius:2px}
  .section-title{font-size:clamp(24px,2.4vw,32px)}
  .section-sub{font-size:14.5px;color:var(--muted);margin:10px 0 0;max-width:52ch}

  .card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
  .post-card{
    display:flex;flex-direction:column;overflow:hidden;
    background:var(--surface);border:1px solid var(--line);
    border-radius:var(--radius-lg);box-shadow:var(--shadow-1);
    transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  }
  .post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(27,122,90,.35)}
  .post-card .thumb{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--surface-2)}
  .post-card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
  .tag{
    align-self:flex-start;padding:4px 12px;border-radius:var(--pill);
    background:var(--surface-2);color:var(--brand-700);
    font-size:12.5px;font-weight:700;
  }
  .card-title{font-size:17.5px;font-weight:700;line-height:1.5;color:var(--brand-900)}
  .card-text{
    font-size:14.5px;color:var(--muted);line-height:1.72;
    display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
  }
  .card-foot{
    margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
    padding-top:12px;border-top:1px dashed var(--line);
    font-size:13px;color:var(--muted);
  }
  .card-link{display:inline-flex;align-items:center;gap:6px;font-weight:700;color:var(--brand-700)}
  .card-link svg{transition:transform .2s ease}
  .post-card:hover .card-link svg{transform:translateX(4px)}

  /* ---------- CTA ---------- */
  .cta-wrap{padding:64px 0 84px}
  .cta-band{
    position:relative;overflow:hidden;
    background:var(--grad-brand);
    border:1px solid rgba(205,235,79,.35);
    border-radius:var(--radius-lg);
    padding:clamp(28px,4vw,48px);
    display:flex;flex-wrap:wrap;gap:26px;align-items:center;justify-content:space-between;
    box-shadow:var(--shadow-2);
  }
  .cta-band::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:repeating-linear-gradient(135deg,rgba(205,235,79,.06) 0 2px,transparent 2px 14px);
  }
  .cta-band > *{position:relative;z-index:1}
  .cta-band h2{color:#fff;font-size:clamp(23px,2.5vw,32px);max-width:20em}
  .cta-band p{margin:12px 0 0;color:rgba(255,255,255,.82);font-size:15px;max-width:46ch}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px}

  /* ---------- 页脚 ---------- */
  .site-footer{
    position:relative;background:var(--brand-900);color:rgba(255,255,255,.78);
    padding:62px 0 26px;
  }
  .site-footer::before{
    content:"";position:absolute;top:0;left:0;right:0;height:3px;
    background:linear-gradient(90deg,var(--lime-400) 0%,var(--brand-500) 42%,var(--accent-500) 100%);
  }
  .footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.1fr;gap:32px}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
  .footer-brand .brand-text{color:#fff}
  .footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.7);max-width:36ch;margin:0}
  .footer-col h4{
    font-size:15px;color:#fff;margin-bottom:14px;padding-bottom:10px;
    border-bottom:1px dashed rgba(205,235,79,.3);
  }
  .footer-col ul{list-style:none;display:grid;gap:10px;font-size:14px}
  .footer-col span{color:rgba(255,255,255,.7)}
  .footer-col a{color:rgba(255,255,255,.78)}
  .footer-col a:hover{color:var(--lime-400)}
  .footer-bottom{
    margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
    display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;
    font-size:13px;color:rgba(255,255,255,.58);
  }

  /* ---------- 抽屉与浮动按钮 ---------- */
  .drawer-mask{
    position:fixed;inset:0;z-index:85;background:rgba(11,47,38,.42);
    opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible}
  .drawer{
    position:fixed;top:0;right:0;z-index:90;height:100%;width:min(84vw,344px);
    background:#fff;padding:22px;overflow-y:auto;
    transform:translateX(105%);transition:transform .28s ease;
    box-shadow:var(--shadow-2);
  }
  .drawer.is-open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
  .drawer-title{font-size:16px;font-weight:800;color:var(--brand-900)}
  .drawer-close{
    width:38px;height:38px;border-radius:12px;border:1px solid var(--line);
    background:#fff;display:grid;place-items:center;cursor:pointer;color:var(--brand-900);
  }
  .drawer-group{display:grid;gap:2px;margin-bottom:16px}
  .drawer-group-title{font-size:12.5px;font-weight:700;color:var(--muted);letter-spacing:.08em;padding:0 12px 6px}
  .drawer-item{
    display:flex;align-items:center;min-height:48px;padding:0 12px;border-radius:12px;
    font-size:15px;font-weight:600;color:var(--brand-900);
  }
  .drawer-item:hover{background:var(--surface-2)}
  .drawer-item.is-active{background:var(--surface-2);color:var(--brand-700)}
  .drawer-search{
    display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;margin-bottom:18px;
    border:1px solid var(--line);border-radius:var(--pill);color:var(--muted);background:var(--bg);
  }
  .drawer-search input{border:0;outline:0;background:transparent;width:100%;font-size:14px}
  .to-top{
    position:fixed;right:22px;bottom:24px;z-index:70;
    width:46px;height:46px;border-radius:50%;border:0;cursor:pointer;
    background:var(--grad-action);color:#fff;display:grid;place-items:center;
    box-shadow:0 14px 26px -14px rgba(232,67,11,.95);
    opacity:0;visibility:hidden;transform:translateY(8px);
    transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
  }
  .to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}

  /* ---------- 响应式 ---------- */
  @media (max-width:1024px){
    .nav-links,.nav-search,.nav-cta{display:none}
    .nav-toggle{display:inline-flex}
    .article-layout{grid-template-columns:minmax(0,1fr)}
    .article-side{order:2}
    .related .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  }
  @media (min-width:1025px){
    .article-side{position:sticky;top:92px}
  }
  @media (max-width:768px){
    .shell{padding:0 18px}
    .article-hero{padding:32px 0 44px}
    .article-body{padding:38px 0 12px}
    .cta-wrap{padding:48px 0 64px}
    .section-head{flex-direction:column;align-items:flex-start}
  }
  @media (max-width:680px){
    .related .card-grid{grid-template-columns:minmax(0,1fr)}
    .footer-grid{grid-template-columns:1fr}
    .brand-text{font-size:15.5px}
    .to-top{right:14px;bottom:16px}
    .article-actions .btn{width:100%}
  }

/* roulang page: category2 */
:root{
  --brand-900:#0B2F26; --brand-700:#10513F; --brand-500:#1B7A5A;
  --accent-500:#FF5A1F; --accent-600:#E8430B; --lime-400:#CDEB4F;
  --bg:#F6F4EF; --surface:#FFFFFF; --surface-2:#EEF3EF;
  --ink:#12211C; --muted:#5F706A; --line:#E3E0D6;
  --radius-lg:24px; --radius-md:16px; --radius-sm:10px; --pill:999px;
  --shadow-1:0 1px 2px rgba(11,47,38,.06),0 12px 28px -14px rgba(11,47,38,.20);
  --shadow-2:0 2px 4px rgba(11,47,38,.08),0 24px 48px -20px rgba(11,47,38,.28);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;line-height:1.3;color:var(--brand-900);font-weight:800}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
.shell{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(246,244,239,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 10px 26px -18px rgba(11,47,38,.45)}
.nav-wrap{display:flex;align-items:center;gap:18px;height:70px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand-900),var(--brand-500));
  color:var(--lime-400);box-shadow:0 8px 16px -10px rgba(11,47,38,.9);
}
.brand-text{font-size:16.5px;font-weight:800;letter-spacing:.2px;color:var(--brand-900)}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:6px}
.nav-link{
  position:relative;padding:8px 13px;border-radius:var(--pill);
  font-size:14.5px;color:var(--muted);transition:color .18s,background .18s;white-space:nowrap;
}
.nav-link:hover{color:var(--brand-900);background:var(--surface-2)}
.nav-link.is-active{color:var(--brand-900);font-weight:700}
.nav-link.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:1px;height:2px;
  background:var(--accent-500);border-radius:2px;
}
.nav-tools{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-search{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--pill);
  color:var(--muted);transition:border-color .18s,box-shadow .18s;
}
.nav-search:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(27,122,90,.14)}
.nav-search input{border:0;outline:0;background:transparent;font-size:14px;width:170px;color:var(--ink)}
.nav-search input::placeholder{color:#9AA7A1}
.nav-toggle{
  display:none;width:42px;height:42px;place-items:center;border-radius:12px;
  border:1px solid var(--line);background:var(--surface);color:var(--brand-900);
}
.nav-toggle:hover{background:var(--surface-2)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--pill);border:1px solid transparent;
  font-size:14.5px;font-weight:700;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,filter .18s ease;
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent-500),var(--accent-600));
  color:#fff;box-shadow:0 14px 24px -14px rgba(232,67,11,.85);
}
.btn-primary:hover{filter:brightness(1.07);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:var(--surface);border-color:var(--brand-700);color:var(--brand-900)}
.btn-outline:hover{background:var(--surface-2);transform:translateY(-1px)}
.btn-outline-light{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.6);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.18);transform:translateY(-1px)}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:700;
  color:var(--brand-700);text-underline-offset:5px;
}
.btn-link:hover{color:var(--accent-600);text-decoration:underline}
.btn-link .arrow{transition:transform .2s ease}
.btn-link:hover .arrow{transform:translateX(4px)}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;color:#fff;padding:56px 0 68px;
  background-image:linear-gradient(135deg,rgba(11,47,38,.95) 0%,rgba(16,81,63,.88) 52%,rgba(27,122,90,.76) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:radial-gradient(rgba(255,255,255,.09) 1px,transparent 1px);
  background-size:15px 15px;
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.12fr .88fr;gap:44px;align-items:center}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13.5px;color:rgba(255,255,255,.78);margin-bottom:18px}
.crumb a{color:rgba(255,255,255,.84)}
.crumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;text-decoration-color:var(--accent-500)}
.crumb .sep{opacity:.5}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:6px 15px;border-radius:var(--pill);
  background:rgba(205,235,79,.16);border:1px solid rgba(205,235,79,.5);
  color:var(--lime-400);font-size:13px;font-weight:700;letter-spacing:.3px;
}
.page-hero h1{
  margin-top:18px;color:#fff;letter-spacing:-.5px;
  font-size:clamp(30px,4.2vw,50px);line-height:1.22;
}
.hero-sub{margin-top:16px;font-size:17px;font-weight:600;color:rgba(255,255,255,.92);max-width:520px}
.hero-desc{margin-top:10px;font-size:15px;color:rgba(255,255,255,.76);max-width:540px;line-height:1.85}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-panel{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.24);
  border-radius:var(--radius-lg);padding:24px;backdrop-filter:blur(6px);
}
.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.stat{
  background:rgba(11,47,38,.4);border:1px solid rgba(205,235,79,.2);
  border-radius:var(--radius-md);padding:14px 16px;
}
.stat-num{font-size:22px;font-weight:800;color:#fff;line-height:1.2}
.stat-label{font-size:12.5px;color:rgba(255,255,255,.72);margin-top:4px}
.hero-panel-note{
  margin-top:18px;padding-top:16px;border-top:1px dashed rgba(255,255,255,.24);
  font-size:13.5px;color:rgba(255,255,255,.74);line-height:1.8;
}

/* ---------- 锚点栏 ---------- */
.anchor-bar{
  position:sticky;top:70px;z-index:40;
  background:rgba(246,244,239,.94);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.anchor-inner{display:flex;gap:10px;overflow-x:auto;padding:12px 0;scrollbar-width:none}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-inner a{
  flex:0 0 auto;padding:7px 15px;border-radius:var(--pill);border:1px solid var(--line);
  background:var(--surface);font-size:13.5px;color:var(--muted);transition:.18s;
}
.anchor-inner a:hover{color:var(--brand-900);border-color:var(--brand-500);background:var(--surface-2)}

/* ---------- 板块 ---------- */
.section{padding:68px 0}
.section.alt{background:var(--surface-2)}
.section-head{max-width:760px;margin-bottom:36px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;
  letter-spacing:1px;color:var(--brand-500);text-transform:none;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent-500);border-radius:2px;display:inline-block}
.section-head h2{margin-top:12px;font-size:clamp(24px,2.6vw,34px);font-weight:800}
.section-head p{margin-top:12px;color:var(--muted);font-size:15.5px;line-height:1.85}

/* ---------- 卡片 ---------- */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(27,122,90,.35)}
.card-media{aspect-ratio:16/9;background:var(--surface-2);overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:24px}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--pill);
  background:var(--surface-2);border:1px solid rgba(27,122,90,.18);
  color:var(--brand-700);font-size:12.5px;font-weight:700;
}
.tag-accent{background:rgba(255,90,31,.1);border-color:rgba(255,90,31,.25);color:var(--accent-600)}
.card h3{margin:14px 0 10px;font-size:20px}
.card p.desc{color:var(--muted);font-size:14.5px;line-height:1.85}
.point-list{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.point-list li{display:flex;gap:10px;font-size:14px;color:var(--ink)}
.point-list li::before{
  content:"";flex:0 0 auto;width:8px;height:8px;margin-top:9px;border-radius:2px;
  background:var(--brand-500);
}
.card-foot{margin-top:20px;padding-top:16px;border-top:1px dashed var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px}
.meta-text{font-size:13px;color:var(--muted)}

/* ---------- 功能矩阵 ---------- */
.matrix-wrap{
  overflow-x:auto;-webkit-overflow-scrolling:touch;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-1);
}
.matrix{min-width:780px;font-size:14.5px}
.matrix th,.matrix td{padding:16px 18px;text-align:center;border-bottom:1px solid var(--line)}
.matrix thead th{background:var(--brand-900);color:#fff;font-weight:700;font-size:14px}
.matrix thead th:first-child{text-align:left}
.matrix tbody th{text-align:left;font-weight:700;color:var(--brand-900);background:var(--surface);white-space:nowrap}
.matrix tbody tr:nth-child(even) th,.matrix tbody tr:nth-child(even) td{background:#FAFBF8}
.matrix tbody tr:hover th,.matrix tbody tr:hover td{background:rgba(205,235,79,.18)}
.matrix tbody tr:last-child th,.matrix tbody tr:last-child td{border-bottom:none}
.cell-ok{color:var(--brand-500);font-weight:800;font-size:17px}
.cell-no{color:#B9B7AC;font-weight:800;font-size:17px}
.cell-badge{display:inline-block;padding:3px 11px;border-radius:var(--pill);font-size:12px;font-weight:700;white-space:nowrap}
.cell-badge.warn{background:rgba(255,90,31,.12);color:var(--accent-600)}
.cell-badge.good{background:rgba(27,122,90,.12);color:var(--brand-700)}
.scroll-hint{margin-top:12px;font-size:13px;color:var(--muted);display:none}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative}
.steps::before{
  content:"";position:absolute;top:41px;left:9%;right:9%;height:2px;z-index:0;
  background:repeating-linear-gradient(90deg,var(--line) 0 9px,transparent 9px 18px);
}
.step{
  position:relative;z-index:1;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-md);padding:22px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(27,122,90,.35)}
.step-num{
  width:38px;height:38px;border-radius:50%;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand-900),var(--brand-500));
  color:#fff;font-weight:800;margin-bottom:14px;
}
.step h3{font-size:17px}
.step p{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.8}

/* ---------- 参数表 ---------- */
.spec-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--radius-lg);box-shadow:var(--shadow-1)}
.spec-table{min-width:680px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;font-size:14.5px}
.spec-table thead th{background:rgba(27,122,90,.1);color:var(--brand-700);text-align:left;padding:15px 18px;border-bottom:1px solid var(--line);font-weight:700}
.spec-table td{padding:15px 18px;border-bottom:1px solid var(--line);color:var(--ink)}
.spec-table tbody tr:nth-child(even) td{background:#FAFBF8}
.spec-table tbody tr:last-child td{border-bottom:none}
.spec-table td:first-child{font-weight:700;color:var(--brand-900)}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:920px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
  box-shadow:var(--shadow-1);overflow:hidden;transition:border-color .2s ease;
}
.faq-item.open{border-color:rgba(27,122,90,.42)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:transparent;border:0;border-left:3px solid transparent;
  text-align:left;font-size:16px;font-weight:700;color:var(--brand-900);
  transition:border-color .2s ease,color .2s ease;
}
.faq-item.open .faq-q{border-left-color:var(--accent-500);color:var(--brand-700)}
.faq-icon{flex:0 0 auto;color:var(--muted);transition:transform .28s ease,color .28s ease}
.faq-item.open .faq-icon{transform:rotate(180deg);color:var(--accent-500)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-a-inner{padding:0 22px 20px;font-size:15px;color:var(--muted);line-height:1.85}

/* ---------- CTA ---------- */
.cta-band{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
  padding:42px;border-radius:var(--radius-lg);color:#fff;
  border:1px solid rgba(205,235,79,.3);box-shadow:var(--shadow-2);
  background-image:linear-gradient(135deg,rgba(11,47,38,.96),rgba(16,81,63,.92)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,30px)}
.cta-band p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.8);max-width:600px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;margin-top:84px;padding:64px 0 28px;
  background:var(--brand-900);color:rgba(255,255,255,.78);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--accent-500),var(--lime-400),var(--brand-500));
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-brand .brand-mark{background:linear-gradient(135deg,var(--brand-500),var(--lime-400));color:var(--brand-900)}
.footer-brand .brand-text{color:#fff}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:350px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px;font-size:14px}
.footer-col a,.footer-col span{color:rgba(255,255,255,.72)}
.footer-col a:hover{color:var(--lime-400);text-decoration:underline;text-underline-offset:4px}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- 浮动按钮与抽屉 ---------- */
.to-top{
  position:fixed;right:24px;bottom:28px;z-index:60;width:46px;height:46px;border:0;
  border-radius:50%;display:grid;place-items:center;color:#fff;
  background:linear-gradient(135deg,var(--brand-700),var(--brand-500));
  box-shadow:var(--shadow-2);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
}
.to-top.show{opacity:1;visibility:visible;transform:none}
.nav-drawer{position:fixed;inset:0;z-index:80;background:rgba(11,47,38,.45);opacity:0;visibility:hidden;transition:.25s}
.nav-drawer.open{opacity:1;visibility:visible}
.nav-drawer-panel{
  position:absolute;top:0;right:0;height:100%;width:min(330px,86vw);background:var(--surface);
  padding:20px;transform:translateX(100%);transition:transform .3s ease;
  display:flex;flex-direction:column;gap:18px;box-shadow:-20px 0 40px -24px rgba(11,47,38,.6);
}
.nav-drawer.open .nav-drawer-panel{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.drawer-close{
  width:38px;height:38px;border-radius:12px;border:1px solid var(--line);background:var(--surface-2);
  color:var(--brand-900);display:grid;place-items:center;
}
.drawer-links{display:flex;flex-direction:column;gap:4px}
.drawer-links a{
  display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:12px;
  font-size:15px;color:var(--brand-900);border:1px solid transparent;transition:.18s;
}
.drawer-links a:hover{background:var(--surface-2);border-color:var(--line)}
.drawer-links a.active{background:rgba(205,235,79,.28);font-weight:700;border-color:rgba(27,122,90,.25)}
.drawer-cta{width:100%}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav-links{display:none}
  .nav-search{display:none}
  .nav-cta{display:none}
  .nav-toggle{display:grid}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .grid-2{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
  .steps::before{display:none}
  .scroll-hint{display:block}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .shell{padding:0 20px}
  .nav-wrap{height:64px;gap:12px}
  .anchor-bar{top:64px}
  .section{padding:52px 0}
  .page-hero{padding:40px 0 52px}
  .cta-band{padding:28px}
  .stat-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:520px){
  .steps{grid-template-columns:1fr}
  .card-body{padding:20px}
  .footer-grid{grid-template-columns:1fr}
  .hero-panel{padding:18px}
  .footer-bottom{flex-direction:column;gap:8px}
}

/* roulang page: category1 */
:root{
    --brand-900:#0B2F26;
    --brand-700:#10513F;
    --brand-500:#1B7A5A;
    --accent-500:#FF5A1F;
    --accent-600:#E8430B;
    --lime-400:#CDEB4F;
    --bg:#F6F4EF;
    --surface:#FFFFFF;
    --surface-2:#EEF3EF;
    --ink:#12211C;
    --muted:#5F706A;
    --line:#E3E0D6;
    --radius-lg:24px;
    --radius-md:16px;
    --radius-sm:10px;
    --pill:999px;
    --shadow-1:0 1px 2px rgba(11,47,38,.06),0 12px 28px -14px rgba(11,47,38,.20);
    --shadow-2:0 2px 4px rgba(11,47,38,.08),0 24px 48px -20px rgba(11,47,38,.28);
    --brand-grad:linear-gradient(135deg,#0B2F26 0%,#10513F 52%,#1B7A5A 100%);
    --action-grad:linear-gradient(135deg,#FF5A1F 0%,#E8430B 100%);
    --gap:24px;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  body::before{
    content:"";
    position:fixed;
    inset:0;
    pointer-events:none;
    z-index:0;
    background-image:radial-gradient(rgba(11,47,38,.055) 1px,transparent 1px),radial-gradient(rgba(11,47,38,.035) 1px,transparent 1px);
    background-size:22px 22px,22px 22px;
    background-position:0 0,11px 11px;
  }
  img{max-width:100%;display:block}
  a{color:var(--brand-700);text-decoration:none}
  a:hover{color:var(--brand-500)}
  h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:800;letter-spacing:.2px}
  p{margin:0}
  ul{margin:0;padding:0;list-style:none}
  button{font-family:inherit}
  :focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px}

  .shell{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
  .section{padding:88px 0;position:relative;z-index:1}
  .section--tight{padding:64px 0}
  .section--mist{background:var(--surface-2);border-top:1.5px solid var(--line);border-bottom:1.5px solid var(--line)}
  .rule-double{height:5px;border-top:1.5px solid var(--line);border-bottom:1.5px solid var(--line);margin:0}

  /* ---------- 通用文字 ---------- */
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;font-weight:700;letter-spacing:.12em;
    color:var(--brand-700);text-transform:uppercase;
    background:var(--surface);border:1.5px dashed rgba(16,81,63,.35);
    padding:6px 14px;border-radius:var(--pill);
  }
  .eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-500)}
  .section-title{font-size:clamp(26px,2.6vw,36px);font-weight:800;line-height:1.28;margin-top:16px;color:var(--brand-900)}
  .section-lead{margin-top:14px;color:var(--muted);font-size:16px;max-width:760px}
  .muted{color:var(--muted)}
  .num{font-variant-numeric:tabular-nums}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:0 22px;border-radius:var(--pill);
    font-size:15px;font-weight:700;line-height:1;
    border:1.5px solid transparent;cursor:pointer;
    transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
    white-space:nowrap;text-decoration:none;
  }
  .btn-primary{background:var(--action-grad);color:#fff;box-shadow:0 12px 24px -14px rgba(232,67,11,.85),inset 0 1px 0 rgba(255,255,255,.25)}
  .btn-primary:hover{filter:brightness(1.07);transform:translateY(-1px);color:#fff}
  .btn-primary:active{transform:translateY(0);filter:brightness(.97)}
  .btn-outline{background:var(--surface);border-color:var(--brand-700);color:var(--brand-900)}
  .btn-outline:hover{background:var(--surface-2);transform:translateY(-1px);color:var(--brand-900)}
  .btn-outline:active{transform:translateY(0)}
  .btn-ghost{background:transparent;color:var(--brand-700);border-color:transparent;text-decoration:underline;text-underline-offset:6px;text-decoration-thickness:1.5px}
  .btn-ghost:hover{color:var(--brand-500);transform:translateY(-1px)}
  .btn-light{background:rgba(255,255,255,.96);color:var(--brand-900);border-color:rgba(255,255,255,.7)}
  .btn-light:hover{background:#fff;transform:translateY(-1px);color:var(--brand-900)}
  .btn-ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
  .btn-ghost-light:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-1px)}

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:80;
    background:rgba(246,244,239,.86);
    backdrop-filter:blur(10px);
    border-bottom:1.5px solid var(--line);
    transition:box-shadow .25s ease,background-color .25s ease;
  }
  .site-header.is-scrolled{box-shadow:0 10px 30px -22px rgba(11,47,38,.55);background:rgba(246,244,239,.96)}
  .nav-wrap{display:flex;align-items:center;gap:20px;min-height:70px}
  .brand{display:inline-flex;align-items:center;gap:10px;color:var(--brand-900);font-weight:800;flex:0 0 auto}
  .brand:hover{color:var(--brand-700)}
  .brand-mark{
    width:38px;height:38px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
    background:var(--brand-grad);color:var(--lime-400);border:1.5px solid rgba(11,47,38,.35);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.22);
  }
  .brand-text{font-size:17px;letter-spacing:.4px;white-space:nowrap}
  .nav-links{display:flex;align-items:center;gap:4px;margin-left:8px}
  .nav-link{
    position:relative;display:inline-flex;align-items:center;height:40px;padding:0 12px;
    font-size:15px;font-weight:600;color:var(--brand-900);border-radius:var(--radius-sm);
    transition:background-color .2s ease,color .2s ease;
  }
  .nav-link:hover{background:rgba(27,122,90,.10);color:var(--brand-700)}
  .nav-link.is-active{font-weight:800;color:var(--brand-900)}
  .nav-link.is-active::after{
    content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--accent-500);
  }
  .nav-tools{display:flex;align-items:center;gap:10px;margin-left:auto}
  .nav-search{
    display:flex;align-items:center;gap:8px;height:42px;padding:0 16px;min-width:210px;
    background:var(--surface);border:1.5px solid var(--line);border-radius:var(--pill);color:var(--muted);
    transition:border-color .2s ease,box-shadow .2s ease;
  }
  .nav-search:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(27,122,90,.12)}
  .nav-search input{
    border:0;outline:none;background:transparent;font-size:14px;color:var(--ink);width:100%;font-family:inherit;
  }
  .nav-search input::placeholder{color:#93a09a}
  .nav-cta{height:42px;min-height:42px;padding:0 18px;font-size:14px}
  .nav-toggle{
    display:none;width:44px;height:44px;align-items:center;justify-content:center;
    background:var(--surface);border:1.5px solid var(--line);border-radius:var(--radius-sm);color:var(--brand-900);cursor:pointer;
  }
  .nav-toggle:hover{background:var(--surface-2)}

  .nav-drawer{
    position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:120;
    background:var(--surface);border-left:1.5px solid var(--line);
    transform:translateX(102%);transition:transform .3s cubic-bezier(.4,0,.2,1);
    overflow-y:auto;padding:24px 20px 40px;
  }
  .nav-drawer.is-open{transform:translateX(0)}
  .nav-drawer h3{font-size:13px;letter-spacing:.14em;color:var(--muted);text-transform:uppercase;margin-bottom:10px}
  .nav-drawer a.drawer-link{
    display:flex;align-items:center;justify-content:space-between;
    min-height:48px;padding:0 4px;border-bottom:1px dashed var(--line);
    font-size:16px;font-weight:600;color:var(--brand-900);
  }
  .nav-drawer a.drawer-link:hover{color:var(--accent-600)}
  .nav-drawer .drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:22px}
  .drawer-close{
    position:absolute;top:14px;right:14px;width:40px;height:40px;border-radius:50%;
    background:var(--surface-2);border:1.5px solid var(--line);color:var(--brand-900);cursor:pointer;
    display:inline-flex;align-items:center;justify-content:center;
  }
  .nav-mask{
    position:fixed;inset:0;background:rgba(11,47,38,.42);z-index:110;opacity:0;visibility:hidden;transition:opacity .25s ease;
  }
  .nav-mask.is-open{opacity:1;visibility:visible}

  /* ---------- Hero ---------- */
  .page-hero{position:relative;overflow:hidden;background:var(--brand-900);color:#fff;border-bottom:1.5px solid rgba(11,47,38,.4)}
  .hero-bg{
    position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-1.png');
    background-size:cover;background-position:center;
    opacity:.55;
  }
  .hero-veil{
    position:absolute;inset:0;
    background:linear-gradient(135deg,rgba(11,47,38,.95) 0%,rgba(16,81,63,.88) 52%,rgba(27,122,90,.78) 100%);
  }
  .hero-veil::after{
    content:"";position:absolute;inset:0;
    background-image:repeating-linear-gradient(135deg,rgba(205,235,79,.06) 0 2px,transparent 2px 12px);
  }
  .hero-inner{position:relative;padding:64px 0 72px}
  .crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.78)}
  .crumbs a{color:rgba(255,255,255,.9);border-bottom:1px solid rgba(255,255,255,.35)}
  .crumbs a:hover{color:var(--lime-400);border-color:var(--lime-400)}
  .crumbs .sep{color:rgba(255,255,255,.45)}
  .hero-badge{
    display:inline-flex;align-items:center;gap:8px;margin-top:26px;
    padding:6px 14px;border-radius:var(--pill);
    background:rgba(205,235,79,.14);border:1.5px solid rgba(205,235,79,.5);
    color:var(--lime-400);font-size:13px;font-weight:700;letter-spacing:.08em;
  }
  .page-hero h1{
    margin-top:18px;font-size:clamp(34px,4.6vw,58px);font-weight:800;line-height:1.2;max-width:14em;
    letter-spacing:-.5px;
  }
  .page-hero h1 em{font-style:normal;color:var(--lime-400)}
  .hero-sub{margin-top:18px;font-size:clamp(16px,1.6vw,19px);color:rgba(255,255,255,.86);max-width:640px;line-height:1.7}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
  .hero-badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:38px}
  .stat-chip{
    display:inline-flex;align-items:center;gap:10px;
    padding:10px 16px;border-radius:var(--pill);
    background:rgba(255,255,255,.10);border:1.5px solid rgba(255,255,255,.22);
    backdrop-filter:blur(4px);
  }
  .stat-chip b{font-size:19px;font-weight:800;font-variant-numeric:tabular-nums;color:#fff}
  .stat-chip span{font-size:13px;color:rgba(255,255,255,.78)}
  .stat-chip .dot{width:8px;height:8px;border-radius:50%;background:var(--lime-400);flex:0 0 auto}

  .anchor-nav{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px;padding-top:26px;border-top:1px solid rgba(255,255,255,.18)}
  .anchor-nav a{
    display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:var(--pill);
    font-size:14px;font-weight:600;color:rgba(255,255,255,.9);
    background:rgba(255,255,255,.08);border:1.5px solid rgba(255,255,255,.2);
    transition:background-color .2s ease,color .2s ease,transform .2s ease;
  }
  .anchor-nav a:hover{background:rgba(205,235,79,.18);border-color:rgba(205,235,79,.55);color:var(--lime-400);transform:translateY(-1px)}

  /* ---------- 卡片通用 ---------- */
  .card{
    background:var(--surface);border:1.5px solid var(--line);border-radius:var(--radius-lg);
    box-shadow:var(--shadow-1);padding:28px;
    transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
  }
  .card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(27,122,90,.4)}
  .card-dark{
    background:var(--brand-grad);color:#fff;border:1.5px solid rgba(205,235,79,.35);
  }
  .tag{
    display:inline-flex;align-items:center;gap:6px;
    padding:4px 12px;border-radius:var(--pill);
    font-size:12.5px;font-weight:700;letter-spacing:.04em;
    background:var(--surface-2);color:var(--brand-700);border:1.5px solid rgba(16,81,63,.16);
  }
  .tag--accent{background:rgba(255,90,31,.12);color:var(--accent-600);border-color:rgba(255,90,31,.28)}
  .tag--lime{background:rgba(205,235,79,.22);color:#3d5410;border-color:rgba(205,235,79,.7)}

  /* ---------- 入口三卡（横向场景分区） ---------- */
  .entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:34px}
  .entry-card{
    background:var(--surface);border:1.5px solid var(--line);border-radius:var(--radius-lg);
    padding:26px 24px;box-shadow:var(--shadow-1);position:relative;overflow:hidden;
    transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
  }
  .entry-card::before{
    content:"";position:absolute;top:0;left:0;right:0;height:5px;background:var(--brand-grad);
  }
  .entry-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(27,122,90,.42)}
  .entry-card h3{font-size:20px;margin-top:14px;color:var(--brand-900)}
  .entry-card p{margin-top:10px;font-size:15px;color:var(--muted)}
  .entry-card .entry-points{margin-top:16px;display:flex;flex-direction:column;gap:8px}
  .entry-card .entry-points li{display:flex;gap:8px;font-size:14.5px;color:var(--ink)}
  .entry-card .entry-points li::before{content:"›";color:var(--accent-500);font-weight:800}

  /* ---------- 图文交替 ---------- */
  .split{
    display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
    padding:56px 0;border-bottom:1px dashed var(--line);
  }
  .split:last-child{border-bottom:0;padding-bottom:0}
  .split:first-child{padding-top:0}
  .split.reverse .split-media{order:2}
  .split.reverse .split-body{order:1}
  .split-media{
    position:relative;border-radius:var(--radius-lg);overflow:hidden;
    border:1.5px solid var(--line);box-shadow:var(--shadow-1);background:var(--surface-2);
    aspect-ratio:4/3;
  }
  .split-media img{width:100%;height:100%;object-fit:cover}
  .split-media .stamp{
    position:absolute;left:14px;bottom:14px;
    background:rgba(11,47,38,.88);color:var(--lime-400);
    font-size:12.5px;font-weight:700;letter-spacing:.08em;
    padding:6px 14px;border-radius:var(--pill);border:1.5px dashed rgba(205,235,79,.6);
  }
  .split-body h3{font-size:clamp(22px,2.1vw,28px);color:var(--brand-900);margin-top:14px}
  .split-body p{margin-top:14px;color:var(--muted);font-size:16px}
  .check-list{margin-top:20px;display:flex;flex-direction:column;gap:12px}
  .check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--ink)}
  .check-list li .mark{
    flex:0 0 auto;width:22px;height:22px;border-radius:7px;margin-top:3px;
    background:rgba(27,122,90,.12);color:var(--brand-700);
    display:inline-flex;align-items:center;justify-content:center;font-size:13px;font-weight:800;
  }

  /* ---------- 三步步骤条 ---------- */
  .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:40px;position:relative}
  .step{position:relative;padding-top:8px}
  .step::after{
    content:"";position:absolute;top:26px;left:56px;right:-22px;height:2px;
    background:repeating-linear-gradient(90deg,rgba(16,81,63,.35) 0 8px,transparent 8px 16px);
  }
  .step:last-child::after{display:none}
  .step-num{
    width:52px;height:52px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
    background:var(--surface);border:2px solid var(--brand-700);color:var(--brand-900);
    font-size:19px;font-weight:800;font-variant-numeric:tabular-nums;position:relative;z-index:1;
    box-shadow:var(--shadow-1);
  }
  .step.is-first .step-num{background:var(--action-grad);border-color:transparent;color:#fff;box-shadow:0 12px 24px -14px rgba(232,67,11,.85)}
  .step h3{font-size:19px;margin-top:18px;color:var(--brand-900)}
  .step p{margin-top:10px;font-size:15px;color:var(--muted)}

  /* ---------- 对照表 ---------- */
  .table-wrap{margin-top:34px;border:1.5px solid var(--line);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-1);overflow:hidden}
  .table-scroll{overflow-x:auto}
  table.matrix{width:100%;border-collapse:collapse;min-width:660px}
  table.matrix th,table.matrix td{padding:16px 20px;text-align:left;font-size:15px;border-bottom:1px solid var(--line)}
  table.matrix thead th{
    background:var(--surface-2);color:var(--brand-900);font-weight:800;font-size:14.5px;letter-spacing:.04em;
    border-bottom:1.5px solid rgba(16,81,63,.22);white-space:nowrap;
  }
  table.matrix tbody tr:nth-child(even){background:rgba(238,243,239,.5)}
  table.matrix tbody tr:hover{background:rgba(205,235,79,.16)}
  table.matrix td:first-child{font-weight:700;color:var(--brand-900)}
  table.matrix tr:last-child td{border-bottom:0}
  .yes{color:var(--brand-700);font-weight:800}
  .half{color:var(--accent-600);font-weight:800}
  .no{color:#9aa8a2;font-weight:800}
  .table-note{margin-top:12px;font-size:13.5px;color:var(--muted)}

  /* ---------- 状态自查卡 ---------- */
  .state-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:36px}
  .state-card{
    background:var(--surface);border:1.5px solid var(--line);border-left:4px solid var(--accent-500);
    border-radius:var(--radius-md);padding:24px;box-shadow:var(--shadow-1);
    transition:transform .22s ease,box-shadow .22s ease;
  }
  .state-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
  .state-card .idx{font-size:13px;font-weight:800;letter-spacing:.12em;color:var(--accent-600);font-variant-numeric:tabular-nums}
  .state-card h3{font-size:18px;margin-top:10px;color:var(--brand-900)}
  .state-card p{margin-top:10px;font-size:14.5px;color:var(--muted)}

  /* ---------- FAQ ---------- */
  .faq-list{margin-top:34px;display:flex;flex-direction:column;gap:12px;max-width:920px}
  .faq-item{
    background:var(--surface);border:1.5px solid var(--line);border-radius:var(--radius-md);
    box-shadow:var(--shadow-1);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
  }
  .faq-item.is-open{border-color:rgba(27,122,90,.45);box-shadow:var(--shadow-2)}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:20px 22px;background:transparent;border:0;cursor:pointer;text-align:left;
    font-size:16.5px;font-weight:700;color:var(--brand-900);font-family:inherit;
  }
  .faq-q:hover{background:rgba(238,243,239,.6)}
  .faq-arrow{
    flex:0 0 auto;width:28px;height:28px;border-radius:50%;
    display:inline-flex;align-items:center;justify-content:center;
    background:var(--surface-2);color:var(--brand-700);
    transition:transform .25s ease,background-color .25s ease,color .25s ease;
  }
  .faq-item.is-open .faq-arrow{transform:rotate(180deg);background:var(--accent-500);color:#fff}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
  .faq-a-inner{padding:0 22px 22px 25px;border-left:3px solid var(--accent-500);margin-left:22px;color:var(--muted);font-size:15.5px}

  /* ---------- CTA ---------- */
  .cta-band{
    position:relative;overflow:hidden;border-radius:var(--radius-lg);
    background:var(--brand-grad);color:#fff;padding:44px 40px;
    border:1.5px solid rgba(205,235,79,.4);box-shadow:var(--shadow-2);
    display:flex;flex-wrap:wrap;gap:26px;align-items:center;justify-content:space-between;
  }
  .cta-band::after{
    content:"";position:absolute;inset:0;
    background-image:repeating-linear-gradient(135deg,rgba(205,235,79,.07) 0 2px,transparent 2px 14px);
    pointer-events:none;
  }
  .cta-band h2{font-size:clamp(22px,2.3vw,30px);color:#fff;position:relative}
  .cta-band p{margin-top:12px;color:rgba(255,255,255,.82);max-width:620px;position:relative;font-size:15.5px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative}

  /* ---------- 页脚 ---------- */
  .site-footer{position:relative;background:var(--brand-900);color:rgba(255,255,255,.78);margin-top:0;z-index:1}
  .site-footer::before{content:"";display:block;height:4px;background:linear-gradient(90deg,#CDEB4F 0%,#1B7A5A 45%,#FF5A1F 100%)}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding:64px 0 44px}
  .footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800}
  .footer-brand .brand-mark{background:rgba(255,255,255,.08);border-color:rgba(205,235,79,.45)}
  .footer-desc{margin-top:18px;font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.7);max-width:420px}
  .footer-col h4{font-size:15px;color:#fff;margin-bottom:18px;letter-spacing:.04em}
  .footer-col ul{display:flex;flex-direction:column;gap:11px}
  .footer-col a,.footer-col span{font-size:14.5px;color:rgba(255,255,255,.72);transition:color .2s ease,padding-left .2s ease}
  .footer-col a:hover{color:var(--lime-400);padding-left:4px}
  .footer-bottom{
    display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
    padding:22px 0 30px;border-top:1px solid rgba(255,255,255,.14);
    font-size:13.5px;color:rgba(255,255,255,.6);
  }

  /* ---------- 返回顶部 ---------- */
  .to-top{
    position:fixed;right:24px;bottom:26px;width:48px;height:48px;border-radius:50%;
    background:var(--action-grad);color:#fff;border:0;cursor:pointer;z-index:90;
    display:inline-flex;align-items:center;justify-content:center;
    box-shadow:0 16px 30px -14px rgba(232,67,11,.9);
    opacity:0;visibility:hidden;transform:translateY(12px);
    transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
  }
  .to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
  .to-top:hover{filter:brightness(1.08)}

  /* ---------- 响应式 ---------- */
  @media (max-width:1280px){
    .nav-search{min-width:170px}
  }
  @media (max-width:1080px){
    .nav-search{display:none}
    .nav-links{gap:0}
    .nav-link{padding:0 9px;font-size:14.5px}
  }
  @media (max-width:1024px){
    .section{padding:72px 0}
    .nav-links{display:none}
    .nav-toggle{display:inline-flex}
    .nav-cta{display:none}
    .nav-wrap{min-height:64px;gap:12px}
    .entry-grid{grid-template-columns:repeat(2,1fr)}
    .state-grid{grid-template-columns:repeat(2,1fr)}
    .split{grid-template-columns:1fr;gap:32px;padding:44px 0}
    .split.reverse .split-media{order:1}
    .split.reverse .split-body{order:2}
    .steps{grid-template-columns:1fr;gap:30px}
    .step::after{display:none}
    .footer-grid{grid-template-columns:1fr 1fr;gap:34px;padding:52px 0 36px}
    .cta-band{padding:36px 28px}
  }
  @media (max-width:768px){
    .shell{padding:0 20px}
    .section{padding:56px 0}
    .section--tight{padding:48px 0}
    .hero-inner{padding:44px 0 54px}
    .page-hero h1{max-width:none}
    .hero-badges{gap:10px}
    .stat-chip{padding:8px 13px}
    .stat-chip b{font-size:17px}
    .entry-grid{grid-template-columns:1fr}
    .state-grid{grid-template-columns:1fr}
    .card{padding:22px}
    .faq-a-inner{margin-left:16px;padding:0 18px 20px 18px}
    .cta-band{padding:30px 22px}
    .to-top{right:16px;bottom:18px;width:44px;height:44px}
  }
  @media (max-width:520px){
    .shell{padding:0 16px}
    .brand-text{font-size:15.5px}
    .hero-actions .btn{width:100%}
    .cta-actions{width:100%}
    .cta-actions .btn{width:100%}
    .footer-grid{grid-template-columns:1fr;gap:30px}
    .footer-bottom{flex-direction:column;align-items:flex-start}
    .split-media{aspect-ratio:16/10}
  }

/* roulang page: category3 */
:root{
  --brand-900:#0B2F26;
  --brand-700:#10513F;
  --brand-500:#1B7A5A;
  --accent-500:#FF5A1F;
  --accent-600:#E8430B;
  --lime-400:#CDEB4F;
  --bg:#F6F4EF;
  --surface:#FFFFFF;
  --surface-2:#EEF3EF;
  --ink:#12211C;
  --muted:#5F706A;
  --line:#E3E0D6;
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:10px;
  --pill:999px;
  --shadow-1:0 1px 2px rgba(11,47,38,.06),0 12px 28px -14px rgba(11,47,38,.20);
  --shadow-2:0 2px 4px rgba(11,47,38,.08),0 24px 48px -20px rgba(11,47,38,.28);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  background-image:radial-gradient(rgba(11,47,38,.035) 1px,transparent 1px);
  background-size:22px 22px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.28;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
input,select,textarea{font:inherit}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px}
::selection{background:rgba(205,235,79,.6);color:var(--brand-900)}

.shell{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section--tight{padding:64px 0}
.section--alt{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,239,.88);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{background:rgba(255,255,255,.94);box-shadow:0 10px 30px -22px rgba(11,47,38,.55)}
.nav-wrap{display:flex;align-items:center;gap:18px;min-height:70px}
.brand{display:flex;align-items:center;gap:10px;white-space:nowrap;color:var(--brand-900);font-weight:800}
.brand-mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;flex:none;
  background:linear-gradient(135deg,#0B2F26 0%,#10513F 55%,#1B7A5A 100%);
  color:var(--lime-400);
  box-shadow:inset 0 0 0 1px rgba(205,235,79,.4);
}
.brand-text{font-size:17px;letter-spacing:.01em}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:8px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 13px;
  font-size:15px;color:#2B3B35;border-radius:12px;
  transition:background .2s ease,color .2s ease;
}
.nav-link:hover{background:var(--surface-2);color:var(--brand-700)}
.nav-link.is-active{color:var(--brand-900);font-weight:700}
.nav-link.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:4px;height:2px;border-radius:2px;background:var(--accent-500);
}
.nav-tools{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-search{
  display:flex;align-items:center;gap:8px;height:42px;padding:0 15px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--pill);
  color:var(--muted);transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search input{border:0;background:transparent;outline:none;width:168px;font-size:14px;color:var(--ink)}
.nav-search input::placeholder{color:#93A39C}
.nav-search:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(27,122,90,.14)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--pill);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease,filter .18s ease;
  white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,#FF5A1F 0%,#E8430B 100%);color:#fff;box-shadow:0 12px 24px -14px rgba(232,67,11,.85)}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.07)}
.btn-primary:active{transform:translateY(1px);filter:brightness(.98)}
.btn-outline{background:var(--surface);border-color:rgba(16,81,63,.35);color:var(--brand-700)}
.btn-outline:hover{background:var(--surface-2);transform:translateY(-1px)}
.btn-outline:active{transform:translateY(1px)}
.btn-light{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.5);color:#fff}
.btn-light:hover{background:rgba(255,255,255,.24);transform:translateY(-1px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:var(--surface);color:var(--brand-900);place-items:center;
}
.nav-toggle:hover{background:var(--surface-2)}

/* ============ 抽屉导航 ============ */
.nav-mask{
  position:fixed;inset:0;background:rgba(11,47,38,.4);z-index:70;
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;
}
.nav-mask.is-open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,344px);z-index:80;
  background:var(--surface);padding:20px;overflow-y:auto;
  transform:translateX(102%);transition:transform .3s cubic-bezier(.4,0,.2,1);
  box-shadow:-24px 0 48px -24px rgba(11,47,38,.5);
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-title{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--muted)}
.drawer-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:var(--surface-2);display:grid;place-items:center;color:var(--brand-900)}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;min-height:48px;padding:0 14px;
  border-radius:12px;font-size:15.5px;font-weight:600;color:var(--brand-900);
}
.drawer-link:hover,.drawer-link.is-active{background:var(--surface-2);color:var(--brand-700)}
.drawer-sep{height:1px;background:var(--line);margin:14px 0}
.drawer-actions{display:grid;gap:10px}

/* ============ 分类页头 ============ */
.page-hero{position:relative;overflow:hidden;color:#fff;background:var(--brand-900)}
.page-hero .hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.34;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(11,47,38,.94) 0%,rgba(16,81,63,.88) 52%,rgba(27,122,90,.78) 100%);
}
.page-hero .grain{
  position:absolute;inset:0;opacity:.5;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:18px 18px;
}
.hero-inner{position:relative;z-index:2;padding:44px 0 68px}
.crumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.72);flex-wrap:wrap}
.crumb a{color:rgba(255,255,255,.86);border-bottom:1px solid transparent;transition:border-color .2s ease,color .2s ease}
.crumb a:hover{color:#fff;border-color:rgba(255,255,255,.6)}
.crumb .sep{opacity:.5}
.crumb .now{color:var(--lime-400);font-weight:700}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;margin-top:22px;
  height:32px;padding:0 14px;border-radius:var(--pill);
  background:rgba(205,235,79,.16);border:1px solid rgba(205,235,79,.5);
  color:var(--lime-400);font-size:13px;font-weight:700;letter-spacing:.02em;
}
.hero-title{
  margin-top:16px;max-width:900px;
  font-size:clamp(32px,4.6vw,54px);font-weight:800;line-height:1.2;letter-spacing:-.02em;
}
.hero-sub{margin-top:16px;font-size:clamp(16px,1.5vw,19px);color:rgba(255,255,255,.86);max-width:760px}
.hero-lead{margin-top:12px;font-size:15.5px;color:rgba(255,255,255,.7);max-width:760px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.anchor-nav{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.anchor-nav a{
  display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:var(--pill);
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.28);
  font-size:14px;color:rgba(255,255,255,.9);transition:background .2s ease,transform .2s ease,border-color .2s ease;
}
.anchor-nav a:hover{background:rgba(255,255,255,.22);border-color:rgba(205,235,79,.6);transform:translateY(-1px)}

.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:34px}
.stat{
  background:rgba(255,255,255,.1);border:1px solid rgba(205,235,79,.34);
  border-radius:var(--radius-md);padding:15px 16px;backdrop-filter:blur(6px);
}
.stat strong{display:block;font-size:24px;font-weight:800;color:var(--lime-400);font-variant-numeric:tabular-nums;line-height:1.2}
.stat span{display:block;margin-top:4px;font-size:13px;color:rgba(255,255,255,.8)}

/* ============ 通用板块头 ============ */
.section-head{max-width:780px;margin-bottom:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:800;letter-spacing:.14em;
  color:var(--brand-500);text-transform:uppercase;
}
.eyebrow::before{content:"";width:26px;height:2px;border-radius:2px;background:var(--accent-500)}
.section-title{margin-top:14px;font-size:clamp(24px,2.6vw,34px);font-weight:800;color:var(--brand-900)}
.section-desc{margin-top:14px;font-size:15.5px;color:var(--muted);max-width:720px}

/* ============ 时间轴 ============ */
.timeline{position:relative;margin-top:8px;padding-left:4px}
.timeline::before{
  content:"";position:absolute;left:23px;top:16px;bottom:26px;width:2px;
  background:linear-gradient(180deg,var(--brand-500) 0%,rgba(27,122,90,.5) 62%,rgba(27,122,90,.05) 100%);
}
.tl-item{position:relative;padding:0 0 26px 70px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:4px;top:4px;width:40px;height:40px;border-radius:14px;
  background:var(--surface);border:2px solid var(--brand-500);color:var(--brand-700);
  display:grid;place-items:center;font-weight:800;font-variant-numeric:tabular-nums;font-size:15px;
  box-shadow:var(--shadow-1);z-index:1;
}
.tl-card{
  background:var(--surface);border:1px solid var(--line);border-radius:20px;
  padding:20px 22px;box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.tl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(27,122,90,.34)}
.tl-card h3{font-size:19px;color:var(--brand-900);margin-bottom:8px}
.tl-card p{font-size:15px;color:var(--muted)}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}

/* ============ 标签 / 徽章 ============ */
.tag{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;
  border-radius:var(--pill);background:var(--surface-2);color:var(--brand-700);
  font-size:12.5px;font-weight:700;letter-spacing:.01em;
}
.tag-accent{background:rgba(255,90,31,.12);color:var(--accent-600)}
.tag-lime{background:rgba(205,235,79,.3);color:#3D5310}
.tag-line{background:transparent;border:1px solid var(--line);color:var(--muted)}

/* ============ 卡片网格 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card-grid--two{grid-template-columns:repeat(2,1fr)}
.card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(27,122,90,.32)}
.card-thumb{aspect-ratio:16/9;background:var(--surface-2);overflow:hidden}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .card-thumb img{transform:scale(1.04)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:19px;color:var(--brand-900)}
.card-body p{font-size:14.8px;color:var(--muted)}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:6px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--brand-700)}
.link-arrow svg{transition:transform .2s ease}
.link-arrow:hover svg{transform:translateX(4px)}
.link-arrow:hover{color:var(--accent-600)}

/* ============ 深色提示卡 ============ */
.dark-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.dark-card{
  position:relative;background:linear-gradient(135deg,#0B2F26 0%,#10513F 100%);
  border:1px solid rgba(205,235,79,.45);border-radius:var(--radius-lg);
  padding:24px;color:#E7F1EC;box-shadow:var(--shadow-2);overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease;
}
.dark-card::after{
  content:"";position:absolute;right:-30px;top:-30px;width:120px;height:120px;border-radius:50%;
  background:radial-gradient(circle,rgba(205,235,79,.22),transparent 68%);
}
.dark-card:hover{transform:translateY(-4px)}
.dark-icon{
  width:42px;height:42px;border-radius:14px;display:grid;place-items:center;
  background:rgba(205,235,79,.16);border:1px solid rgba(205,235,79,.5);color:var(--lime-400);
}
.dark-card h3{margin-top:16px;font-size:17.5px;color:#fff}
.dark-card p{margin-top:10px;font-size:14.5px;color:rgba(231,241,236,.78)}

/* ============ 场景分区 ============ */
.scene-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.scene{
  display:flex;gap:18px;align-items:flex-start;
  background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--accent-500);
  border-radius:var(--radius-md);padding:22px;box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease;
}
.scene:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.scene-num{
  flex:none;width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
  background:var(--surface-2);color:var(--brand-700);font-weight:800;font-variant-numeric:tabular-nums;
}
.scene h3{font-size:17.5px;color:var(--brand-900)}
.scene p{margin-top:8px;font-size:14.6px;color:var(--muted)}
.scene .tag{margin-top:12px}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:0.86fr 1.14fr;gap:40px;align-items:start}
.faq-side{
  position:sticky;top:96px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:26px;box-shadow:var(--shadow-1);
}
.faq-side h3{font-size:19px;color:var(--brand-900)}
.faq-side p{margin-top:12px;font-size:14.6px;color:var(--muted)}
.faq-side .btn{margin-top:18px}
.faq-side ul{margin-top:20px;display:grid;gap:12px}
.faq-side li{display:flex;gap:10px;font-size:14.5px;color:var(--muted)}
.faq-side li svg{flex:none;margin-top:5px;color:var(--brand-500)}
.faq-list{display:grid;gap:14px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:18px;
  overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.is-open{border-color:rgba(27,122,90,.4);box-shadow:var(--shadow-1)}
.faq-q{
  position:relative;width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px 18px 24px;background:transparent;border:0;text-align:left;
  font-size:16.5px;font-weight:700;color:var(--brand-900);
}
.faq-q::before{
  content:"";position:absolute;left:0;top:13px;bottom:13px;width:3px;border-radius:0 3px 3px 0;
  background:var(--accent-500);transform:scaleY(0);transform-origin:top;transition:transform .25s ease;
}
.faq-item.is-open .faq-q::before{transform:scaleY(1)}
.faq-q svg{flex:none;color:var(--brand-500);transition:transform .25s ease}
.faq-item.is-open .faq-q svg{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 24px 20px;font-size:14.8px;color:var(--muted)}

/* ============ CTA 条带 ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:28px;
  border:1px solid rgba(205,235,79,.3);
  background:linear-gradient(135deg,#0B2F26 0%,#10513F 55%,#1B7A5A 100%);
  color:#fff;padding:46px;
}
.cta-band .cta-bg{
  position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.18;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;bottom:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(205,235,79,.24),transparent 70%);
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{font-size:clamp(22px,2.4vw,30px);color:#fff;max-width:620px}
.cta-inner p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.82);max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:#D7E4DE;margin-top:96px;position:relative}
.site-footer::before{content:"";display:block;height:3px;background:linear-gradient(90deg,#CDEB4F 0%,#FF5A1F 50%,#1B7A5A 100%)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding:60px 0 38px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px}
.footer-brand .brand-mark{box-shadow:inset 0 0 0 1px rgba(205,235,79,.5)}
.footer-desc{margin-top:16px;font-size:14.5px;line-height:1.85;color:rgba(215,228,222,.76);max-width:380px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.footer-col li{margin-bottom:11px;font-size:14.5px}
.footer-col a{color:rgba(215,228,222,.82);border-bottom:1px solid transparent;transition:color .2s ease,border-color .2s ease}
.footer-col a:hover{color:var(--lime-400);border-color:rgba(205,235,79,.6)}
.footer-col span{color:rgba(215,228,222,.66)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  padding:20px 0 34px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13.5px;color:rgba(215,228,222,.64);
}

/* ============ 返回顶部 ============ */
.back-top{
  position:fixed;right:22px;bottom:26px;z-index:65;
  width:48px;height:48px;border-radius:50%;border:1px solid rgba(205,235,79,.4);
  background:linear-gradient(135deg,#0B2F26,#1B7A5A);color:var(--lime-400);
  display:grid;place-items:center;box-shadow:var(--shadow-2);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
}
.back-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{filter:brightness(1.12)}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .nav-search input{width:132px}
  .dark-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1024px){
  .nav-links{display:none}
  .nav-toggle{display:grid}
  .nav-search{display:none}
  .nav-cta{display:none}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .faq-wrap{grid-template-columns:1fr;gap:28px}
  .faq-side{position:static}
  .section{padding:72px 0}
}
@media (max-width:768px){
  .shell{padding:0 20px}
  .hero-inner{padding:32px 0 54px}
  .stat-row{grid-template-columns:repeat(2,1fr)}
  .card-grid,.card-grid--two{grid-template-columns:1fr}
  .scene-list{grid-template-columns:1fr}
  .dark-grid{grid-template-columns:1fr}
  .cta-band{padding:32px 24px;border-radius:22px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .timeline::before{left:19px}
  .tl-item{padding-left:60px}
  .tl-dot{left:0;width:36px;height:36px;border-radius:12px;font-size:14px}
  .site-footer{margin-top:72px}
}
@media (max-width:520px){
  .brand-text{font-size:15.5px}
  .hero-title{font-size:29px}
  .stat-row{grid-template-columns:1fr 1fr;gap:10px}
  .anchor-nav a{height:36px;padding:0 13px;font-size:13.2px}
  .footer-grid{grid-template-columns:1fr;padding:44px 0 28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .btn{height:46px}
  .card-body{padding:18px}
  .scene{padding:18px}
}

/* roulang page: category4 */
:root{
  --brand-900:#0B2F26;
  --brand-700:#10513F;
  --brand-500:#1B7A5A;
  --accent-500:#FF5A1F;
  --accent-600:#E8430B;
  --lime-400:#CDEB4F;
  --bg:#F6F4EF;
  --surface:#FFFFFF;
  --surface-2:#EEF3EF;
  --ink:#12211C;
  --muted:#5F706A;
  --line:#E3E0D6;
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:10px;
  --pill:999px;
  --shadow-1:0 1px 2px rgba(11,47,38,.06), 0 12px 28px -14px rgba(11,47,38,.20);
  --shadow-2:0 2px 4px rgba(11,47,38,.08), 0 24px 48px -20px rgba(11,47,38,.28);
  --brand-grad:linear-gradient(135deg,#0B2F26 0%,#10513F 52%,#1B7A5A 100%);
  --accent-grad:linear-gradient(135deg,#FF5A1F,#E8430B);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(27,122,90,.07), transparent 42%),
    radial-gradient(circle at 88% 4%, rgba(255,90,31,.06), transparent 38%);
  background-attachment:fixed;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--brand-700);text-decoration:none}
button{font:inherit;color:inherit}
input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.3;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px}
.shell{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
@media (max-width:520px){.shell{padding:0 18px}}
.section{padding:88px 0}
@media (max-width:768px){.section{padding:58px 0}}
.tnum{font-variant-numeric:tabular-nums}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:70;
  background:rgba(246,244,239,.86);
  backdrop-filter:saturate(150%) blur(12px);
  -webkit-backdrop-filter:saturate(150%) blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 30px -22px rgba(11,47,38,.55);background:rgba(246,244,239,.95)}
.nav-wrap{display:flex;align-items:center;gap:18px;min-height:70px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--brand-900)}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-grad);color:var(--lime-400);
  box-shadow:inset 0 0 0 1px rgba(205,235,79,.35), var(--shadow-1);
}
.brand-text{font-weight:800;font-size:17px;letter-spacing:.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:6px}
.nav-link{
  position:relative;
  display:inline-block;
  padding:9px 13px;
  border-radius:var(--pill);
  font-size:15px;
  font-weight:600;
  color:var(--brand-900);
  white-space:nowrap;
  transition:background .2s ease,color .2s ease;
}
.nav-link:hover{background:rgba(27,122,90,.10)}
.nav-link.is-active{color:var(--brand-700)}
.nav-link.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;
  border-radius:2px;background:var(--accent-500);
}
.nav-tools{display:flex;align-items:center;gap:10px;margin-left:auto}
.nav-search{
  display:flex;align-items:center;gap:8px;
  height:42px;padding:0 14px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--pill);
  color:var(--muted);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(27,122,90,.12)}
.nav-search input{
  width:196px;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--ink);
}
.nav-search input::placeholder{color:#8b9a94}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;
  border-radius:var(--pill);
  border:1px solid transparent;
  font-size:15px;font-weight:700;
  cursor:pointer;
  transition:transform .18s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn:active{transform:translateY(1px)}
.btn-primary{
  background:var(--accent-grad);
  color:#fff;
  box-shadow:0 10px 24px -14px rgba(232,67,11,.85), inset 0 1px 0 rgba(255,255,255,.28);
}
.btn-primary:hover{filter:brightness(1.07);transform:translateY(-1px)}
.btn-outline{
  background:var(--surface);
  border-color:rgba(16,81,63,.45);
  color:var(--brand-700);
}
.btn-outline:hover{background:var(--surface-2);border-color:var(--brand-500);transform:translateY(-1px)}
.btn-ghost{
  background:transparent;color:var(--brand-700);border-color:transparent;
  text-decoration:underline;text-underline-offset:5px;text-decoration-thickness:1.5px;
}
.btn-ghost:hover{color:var(--accent-600)}
.btn-onDark{
  background:rgba(255,255,255,.10);
  border-color:rgba(255,255,255,.45);
  color:#fff;
}
.btn-onDark:hover{background:rgba(255,255,255,.18);transform:translateY(-1px)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  align-items:center;justify-content:center;
  background:var(--surface);border:1px solid var(--line);color:var(--brand-900);cursor:pointer;
}
.nav-overlay{
  position:fixed;inset:0;background:rgba(11,47,38,.42);
  opacity:0;visibility:hidden;transition:.25s ease;z-index:65;
}
.nav-overlay.is-open{opacity:1;visibility:visible}
@media (max-width:1100px){
  .nav-search{display:none}
}
@media (max-width:1024px){
  .nav-toggle{display:inline-flex}
  .nav-links{
    position:fixed;top:0;right:0;height:100dvh;width:290px;max-width:86vw;
    margin:0;padding:94px 20px 28px;
    flex-direction:column;align-items:stretch;gap:6px;
    background:var(--surface);
    box-shadow:-24px 0 48px -28px rgba(11,47,38,.6);
    transform:translateX(105%);
    transition:transform .3s ease;
    overflow-y:auto;
    z-index:68;
  }
  .nav-links.is-open{transform:none}
  .nav-link{padding:14px 14px;font-size:16px;border-radius:var(--radius-sm)}
  .nav-link.is-active{background:var(--surface-2)}
  .nav-link.is-active::after{display:none}
}
@media (max-width:640px){
  .nav-cta{display:none}
  .nav-wrap{min-height:64px;gap:12px}
  .brand-text{font-size:15.5px}
}

/* ---------- 内页横幅 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:74px 0 68px;
  background-image:linear-gradient(135deg,rgba(11,47,38,.90) 0%,rgba(16,81,63,.86) 52%,rgba(27,122,90,.80) 100%),url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  color:#fff;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:22px 22px;opacity:.5;pointer-events:none;
}
.page-hero .shell{position:relative;z-index:2}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.76);margin-bottom:20px}
.crumbs a{color:rgba(255,255,255,.92);border-bottom:1px solid rgba(255,255,255,.35)}
.crumbs a:hover{color:var(--lime-400);border-color:var(--lime-400)}
.crumbs span.sep{opacity:.6}
.crumbs span.now{color:#fff;font-weight:600}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:var(--pill);
  background:rgba(205,235,79,.16);
  border:1px solid rgba(205,235,79,.5);
  color:var(--lime-400);font-size:13.5px;font-weight:700;letter-spacing:.03em;
}
.page-hero h1{
  margin:20px 0 16px;
  font-size:clamp(32px,4.4vw,52px);
  font-weight:800;line-height:1.2;color:#fff;
  max-width:18em;
}
.page-hero .lead{
  font-size:clamp(15.5px,1.5vw,17.5px);
  line-height:1.8;
  color:rgba(255,255,255,.9);
  max-width:56em;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:12px;margin-top:36px;
}
.stat-chip{
  display:inline-flex;align-items:baseline;gap:8px;
  padding:10px 16px;border-radius:var(--pill);
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.26);
  backdrop-filter:blur(4px);
  color:#fff;font-size:13px;
}
.stat-chip b{font-size:19px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--lime-400)}
.stat-chip i{font-style:normal;color:rgba(255,255,255,.78)}

/* ---------- 锚点条 ---------- */
.anchor-bar{
  position:sticky;top:70px;z-index:45;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.anchor-bar .shell{display:flex;gap:8px;overflow-x:auto;padding-top:12px;padding-bottom:12px;scrollbar-width:none}
.anchor-bar .shell::-webkit-scrollbar{display:none}
.anchor-link{
  flex:0 0 auto;
  padding:9px 16px;border-radius:var(--pill);
  background:var(--surface-2);
  border:1px solid transparent;
  font-size:14px;font-weight:600;color:var(--brand-700);
  transition:.2s ease;
}
.anchor-link:hover{background:rgba(27,122,90,.14);border-color:rgba(27,122,90,.32);transform:translateY(-1px)}
@media (max-width:640px){.anchor-bar{top:64px}}

/* ---------- 通用板块头 ---------- */
.sec-head{max-width:760px;margin-bottom:44px}
.sec-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:800;letter-spacing:.14em;color:var(--brand-500);
  text-transform:uppercase;margin-bottom:14px;
}
.sec-kicker::before{content:"";width:26px;height:2px;background:var(--accent-500);border-radius:2px}
.sec-head h2{font-size:clamp(26px,2.6vw,36px);font-weight:800;line-height:1.3;color:var(--brand-900)}
.sec-head p{margin-top:14px;color:var(--muted);font-size:16px;line-height:1.8}
.on-dark .sec-head h2{color:#fff}
.on-dark .sec-head p{color:rgba(255,255,255,.82)}
.on-dark .sec-kicker{color:var(--lime-400)}

/* ---------- 支持范围 ---------- */
.scope-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:22px;align-items:stretch}
.scope-main{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-1);
  display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.scope-main:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(27,122,90,.35)}
.scope-main figure{margin:0;position:relative;background:var(--surface-2);aspect-ratio:16/9;overflow:hidden}
.scope-main figure img{width:100%;height:100%;object-fit:cover}
.scope-main .body{padding:26px 26px 30px}
.scope-main h3{font-size:22px;color:var(--brand-900)}
.scope-main p{margin-top:12px;color:var(--muted);font-size:15.5px;line-height:1.8}
.scope-side{display:grid;gap:16px;grid-template-rows:repeat(3,1fr)}
.mini-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:22px 22px 20px;box-shadow:var(--shadow-1);
  display:flex;gap:16px;align-items:flex-start;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.mini-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(27,122,90,.35)}
.mini-icon{
  flex:0 0 auto;width:44px;height:44px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:var(--surface-2);color:var(--brand-700);
  border:1px solid rgba(27,122,90,.22);
}
.mini-card h3{font-size:16.5px;color:var(--brand-900)}
.mini-card p{margin-top:8px;font-size:14.5px;color:var(--muted);line-height:1.75}
@media (max-width:900px){
  .scope-grid{grid-template-columns:1fr}
  .scope-side{grid-template-rows:none}
}

/* ---------- 自助排查步骤 ---------- */
.check-wrap{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;position:relative}
.step{
  position:relative;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:28px 24px 26px;box-shadow:var(--shadow-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(27,122,90,.35)}
.step-no{
  width:42px;height:42px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-grad);color:var(--lime-400);
  font-weight:800;font-size:17px;font-variant-numeric:tabular-nums;
  box-shadow:inset 0 0 0 1px rgba(205,235,79,.35);
  margin-bottom:18px;
}
.step h3{font-size:18.5px;color:var(--brand-900)}
.step p{margin-top:10px;color:var(--muted);font-size:15px;line-height:1.8}
.step ul{margin-top:14px;display:grid;gap:9px}
.step li{
  position:relative;padding-left:20px;font-size:14.5px;color:var(--brand-900);line-height:1.7;
}
.step li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;
  background:var(--brand-500);
}
.step li em{font-style:normal;color:var(--accent-600);font-weight:700}
.tip-strip{
  margin-top:24px;
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;justify-content:space-between;
  background:var(--surface);border:1px dashed rgba(27,122,90,.45);border-radius:var(--radius-md);
  padding:18px 22px;
}
.tip-strip p{font-size:14.5px;color:var(--muted)}
.tip-strip p b{color:var(--brand-900)}
@media (max-width:900px){
  .steps{grid-template-columns:1fr}
  .steps::before{display:none}
}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:40px}
.faq-group{margin-bottom:34px}
.faq-group:last-child{margin-bottom:0}
.faq-group-title{
  display:flex;align-items:center;gap:12px;
  font-size:19px;color:var(--brand-900);margin-bottom:14px;
}
.faq-group-title span.dot{
  width:10px;height:10px;border-radius:3px;background:var(--accent-500);flex:0 0 auto;
}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item:hover{border-color:rgba(27,122,90,.35)}
.faq-item.is-open{border-color:rgba(27,122,90,.5);box-shadow:var(--shadow-1)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;
  padding:19px 22px;background:transparent;border:0;cursor:text;
  text-align:left;font-size:16px;font-weight:700;color:var(--brand-900);
  cursor:pointer;
}
.faq-q .qtxt{flex:1}
.faq-q .chev{
  flex:0 0 auto;width:30px;height:30px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--surface-2);color:var(--brand-700);
  transition:transform .28s ease,background .2s ease,color .2s ease;
}
.faq-item.is-open .chev{transform:rotate(180deg);background:var(--accent-grad);color:#fff}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .32s ease;
  border-left:3px solid transparent;
}
.faq-item.is-open .faq-a{border-left-color:var(--accent-500)}
.faq-a .inner{
  padding:4px 26px 22px 24px;
  color:var(--muted);font-size:15px;line-height:1.85;
}
.faq-a .inner p + p{margin-top:12px}
.faq-a .inner b{color:var(--brand-900)}
.faq-a .inner ul{margin-top:12px;display:grid;gap:8px}
.faq-a .inner li{position:relative;padding-left:18px}
.faq-a .inner li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;background:var(--brand-500);
}

/* ---------- 提交区 ---------- */
.submit-wrap{
  background:var(--brand-grad);
  color:#fff;
  border-radius:32px;
  padding:52px 44px;
  position:relative;overflow:hidden;
  box-shadow:var(--shadow-2);
}
.submit-wrap::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:24px 24px;opacity:.45;
}
.submit-grid{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:38px}
.submit-aside h2{font-size:clamp(24px,2.3vw,32px);color:#fff;line-height:1.32}
.submit-aside > p{margin-top:14px;color:rgba(255,255,255,.84);font-size:15.5px;line-height:1.8}
.aside-list{margin-top:26px;display:grid;gap:14px}
.aside-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:14.5px;color:rgba(255,255,255,.9);line-height:1.7;
}
.aside-list li svg{flex:0 0 auto;margin-top:3px;color:var(--lime-400)}
.contact-card{
  margin-top:28px;
  background:rgba(255,255,255,.10);
  border:1px solid rgba(205,235,79,.42);
  border-radius:var(--radius-md);
  padding:20px 22px;
}
.contact-card h3{font-size:15px;color:var(--lime-400);letter-spacing:.04em}
.contact-card dl{margin:14px 0 0;display:grid;gap:10px}
.contact-card dt{font-size:12.5px;color:rgba(255,255,255,.6)}
.contact-card dd{margin:0;font-size:14.5px;color:#fff;font-weight:600}
.form-card{
  background:var(--surface);
  color:var(--ink);
  border-radius:var(--radius-lg);
  padding:30px 28px 32px;
  box-shadow:var(--shadow-2);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:700;color:var(--brand-900);margin-bottom:7px}
.field label i{font-style:normal;color:var(--accent-600)}
.field input,.field select,.field textarea{
  width:100%;min-height:48px;padding:12px 14px;
  border:1px solid var(--line);border-radius:12px;
  background:var(--surface);color:var(--ink);
  font-size:15px;outline:none;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field textarea{min-height:118px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:#9aa8a3}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand-500);
  box-shadow:0 0 0 4px rgba(27,122,90,.13);
}
.field select{
  appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--brand-700) 50%),linear-gradient(135deg,var(--brand-700) 50%,transparent 50%);
  background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;
  background-size:5px 5px,5px 5px;background-repeat:no-repeat;
  padding-right:42px;
}
.field .hint{display:block;margin-top:6px;font-size:12.5px;color:var(--muted)}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--accent-600)}
.field .err{display:none;margin-top:6px;font-size:12.5px;color:var(--accent-600);font-weight:600}
.field.has-error .err{display:block}
.check-line{display:flex;align-items:flex-start;gap:11px;margin:6px 0 22px;font-size:13.5px;color:var(--muted);line-height:1.7}
.check-line input{
  flex:0 0 auto;width:20px;height:20px;margin-top:2px;accent-color:var(--brand-500);cursor:pointer;
}
.check-line a{font-weight:700}
.form-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px}
.form-note{font-size:12.5px;color:var(--muted)}
.form-success{
  display:none;
  margin-top:18px;padding:14px 18px;
  background:var(--surface-2);border:1px solid rgba(27,122,90,.4);border-radius:12px;
  color:var(--brand-700);font-size:14.5px;font-weight:600;
}
.form-success.is-show{display:block}
@media (max-width:900px){
  .submit-wrap{padding:38px 22px;border-radius:26px}
  .submit-grid{grid-template-columns:1fr;gap:30px}
  .form-row{grid-template-columns:1fr}
}

/* ---------- 服务说明条 ---------- */
.sla-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.sla{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:24px 22px;box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease;
}
.sla:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.sla .num{font-size:26px;font-weight:800;color:var(--brand-700);font-variant-numeric:tabular-nums}
.sla .num small{font-size:13px;font-weight:700;color:var(--muted);margin-left:4px}
.sla h3{margin-top:12px;font-size:16px;color:var(--brand-900)}
.sla p{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.75}
@media (max-width:900px){.sla-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.sla-grid{grid-template-columns:1fr}}

/* ---------- CTA 条带 ---------- */
.cta-band{
  background:var(--brand-900);
  border-radius:32px;
  padding:44px 42px;
  display:flex;flex-wrap:wrap;align-items:center;gap:26px;justify-content:space-between;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(115deg,rgba(205,235,79,.16),transparent 46%);
  pointer-events:none;
}
.cta-band .txt{position:relative;z-index:2;max-width:640px}
.cta-band h2{font-size:clamp(22px,2.2vw,30px);color:#fff;line-height:1.32}
.cta-band p{margin-top:10px;color:rgba(255,255,255,.78);font-size:15px;line-height:1.75}
.cta-band .acts{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:14px}
@media (max-width:768px){.cta-band{padding:32px 24px;border-radius:26px}}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;
  background:var(--brand-900);
  color:rgba(255,255,255,.78);
  padding:64px 0 30px;
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--brand-500),var(--lime-400),var(--accent-500));
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding-bottom:38px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(205,235,79,.14);box-shadow:inset 0 0 0 1px rgba(205,235,79,.4)}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.7);max-width:32em}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:grid;gap:11px}
.footer-col a,.footer-col span{font-size:14px;color:rgba(255,255,255,.72);transition:color .2s ease}
.footer-col a:hover{color:var(--lime-400)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding-top:22px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.6);
}
@media (max-width:900px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.footer-grid{grid-template-columns:1fr;gap:28px}}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:22px;bottom:24px;z-index:80;
  width:48px;height:48px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--accent-grad);color:#fff;border:0;cursor:pointer;
  box-shadow:0 14px 28px -14px rgba(232,67,11,.9);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
}
.to-top.is-show{opacity:1;visibility:visible;transform:none}
.to-top:hover{filter:brightness(1.07);transform:translateY(-2px)}