/* roulang page: index */
:root{
  --g900:#0F3D2E;
  --g700:#14604A;
  --g300:#7FBFA6;
  --g50:#EAF4EF;
  --or:#FF6A2B;
  --or-d:#E2541A;
  --or-s:#FFF0E8;
  --ye:#FFC53D;
  --ink:#0B1512;
  --ink2:#3D4945;
  --muted:#6B7873;
  --line:#E1E7E1;
  --bg:#F5F8F4;
  --card:#FFFFFF;
  --ok:#1F8A5B;
  --warn:#C9821B;
  --err:#C8402F;
  --info:#2E6FB7;
  --r-s:8px;
  --r-m:12px;
  --r-l:18px;
  --r-xl:24px;
  --r-p:999px;
  --sh1:0 1px 2px rgba(11,21,18,.05);
  --sh2:0 8px 24px -12px rgba(11,21,18,.18);
  --sh3:0 24px 56px -24px rgba(11,21,18,.28);
  --t:180ms cubic-bezier(.2,.7,.3,1);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --num:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--ink2);
  background:var(--bg);
  letter-spacing:0;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--g700);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--or-d);}
button,input,select,textarea{font:inherit;color:inherit;}
button{border:0;background:none;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.2px;}
h1{font-size:clamp(30px,4.4vw,52px);line-height:1.15;letter-spacing:-.5px;}
h2{font-size:clamp(24px,2.8vw,34px);line-height:1.25;}
h3{font-size:20px;line-height:1.35;font-weight:600;}
h4{font-size:17px;line-height:1.4;font-weight:600;}
p{margin:0;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(255,106,43,.35);border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:80px 0;}
.section-tight{padding:56px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
.section-head .lead{max-width:640px;margin-top:10px;color:var(--ink2);font-size:15px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.4px;color:var(--g700);background:var(--g50);border:1px solid #CFE7DB;border-radius:var(--r-p);padding:5px 12px;}
.mono{font-family:var(--num);font-variant-numeric:tabular-nums;letter-spacing:-.5px;}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--g700);font-weight:600;font-size:15px;border-bottom:2px solid var(--or);padding-bottom:2px;transition:border-color var(--t),color var(--t);}
.text-link:hover{border-color:var(--g700);color:var(--or-d);}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;border-radius:var(--r-p);padding:4px 10px;line-height:1.5;}
.badge-orange{background:var(--or-s);color:var(--or-d);border:1px solid #FFD9C6;}
.badge-soft{background:var(--g50);color:var(--g700);border:1px solid #CFE7DB;}
.badge-gray{background:#EEF2EE;color:var(--muted);border:1px solid var(--line);}
.badge-ok{background:#E8F5EE;color:var(--ok);border:1px solid #C6E6D4;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:10px;font-size:15px;font-weight:600;line-height:1;transition:transform var(--t),background var(--t),color var(--t),box-shadow var(--t),border-color var(--t);white-space:nowrap;}
.btn:disabled{opacity:.5;cursor:not-allowed;}
.btn-primary{background:var(--g900);color:#fff;box-shadow:var(--sh1);}
.btn-primary:hover{background:var(--g700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh2);}
.btn-accent{background:var(--or);color:#1A0E05;}
.btn-accent:hover{background:#FF7F45;color:#1A0E05;transform:translateY(-1px);box-shadow:0 0 0 4px var(--or-s);}
.btn-outline{background:transparent;color:var(--g900);border:1.5px solid var(--g900);}
.btn-outline:hover{background:var(--g50);color:var(--g900);}
.btn-ghost{background:transparent;color:var(--ink2);height:40px;padding:0 12px;border-radius:10px;font-size:14px;font-weight:600;}
.btn-ghost:hover{background:var(--g50);color:var(--g900);}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}

/* 公告条 */
.notice{background:linear-gradient(90deg,#0B2A20,#14604A 60%,#0F3D2E);color:#DCEFE5;}
.notice-inner{display:flex;align-items:center;gap:12px;height:36px;font-size:13px;}
.notice-inner p{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#DCEFE5;}
.notice-dot{width:7px;height:7px;border-radius:50%;background:var(--ye);flex:none;box-shadow:0 0 0 3px rgba(255,197,61,.25);}
.notice .badge-orange{background:rgba(255,106,43,.18);border-color:rgba(255,106,43,.35);color:#FFC7A8;}
.notice-close{width:28px;height:28px;display:grid;place-items:center;border-radius:8px;color:#B9D6C8;flex:none;transition:background var(--t),color var(--t);}
.notice-close:hover{background:rgba(255,255,255,.12);color:#fff;}

/* 导航 */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);transition:box-shadow var(--t),background var(--t);}
.site-header.scrolled{background:rgba(255,255,255,.86);backdrop-filter:blur(12px);box-shadow:0 10px 30px -22px rgba(11,21,18,.35);}
.nav-inner{display:flex;align-items:center;gap:20px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,var(--g900),var(--g700));display:grid;place-items:center;box-shadow:var(--sh1);}
.brand-mark svg{width:20px;height:20px;stroke:#fff;fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;color:var(--ink);letter-spacing:-.3px;}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:1px;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px;}
.main-nav a{position:relative;padding:8px 12px;font-size:15px;font-weight:500;color:var(--ink2);border-radius:8px;}
.main-nav a::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--or);transform:scaleX(0);transform-origin:left;transition:transform var(--t);border-radius:2px;}
.main-nav a:hover{color:var(--g900);background:var(--g50);}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1);}
.main-nav a.active{color:var(--g900);font-weight:600;background:transparent;}
.nav-tools{display:flex;align-items:center;gap:10px;margin-left:auto;}
.command-search{position:relative;display:flex;align-items:center;width:290px;height:40px;background:#F2F6F2;border:1px solid var(--line);border-radius:10px;padding:0 10px 0 12px;transition:border-color var(--t),background var(--t),box-shadow var(--t);}
.command-search svg{width:18px;height:18px;stroke:var(--muted);fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;flex:none;}
.command-search input{flex:1;border:0;background:transparent;font-size:14px;padding:0 8px;outline:none;color:var(--ink);min-width:0;}
.command-search input::placeholder{color:#96A29C;}
.command-search kbd{font-family:var(--num);font-size:11px;color:var(--muted);background:#fff;border:1px solid var(--line);border-radius:6px;padding:2px 6px;flex:none;}
.command-search.open{border-color:var(--g300);background:#fff;box-shadow:0 0 0 3px rgba(127,191,166,.25);}
.search-panel{position:absolute;top:50px;left:0;right:0;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--sh3);padding:16px;display:none;}
.command-search.open .search-panel{display:block;}
.panel-title{font-size:11px;font-weight:600;letter-spacing:1px;color:var(--muted);margin-bottom:8px;}
.panel-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px;}
.panel-chips a{font-size:13px;background:var(--g50);border:1px solid #CFE7DB;color:var(--g700);border-radius:var(--r-p);padding:4px 10px;}
.panel-chips a:hover{background:#DCEFE5;}
.panel-list li{font-size:13px;color:var(--muted);padding:6px 0;border-top:1px dashed var(--line);}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;place-items:center;color:var(--g900);border:1px solid var(--line);}
.nav-toggle svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.75;stroke-linecap:round;}

/* 抽屉 */
.drawer{position:fixed;inset:64px 0 0 0;background:#fff;z-index:55;padding:20px 24px 40px;transform:translateY(-12px);opacity:0;pointer-events:none;transition:opacity var(--t),transform var(--t);overflow-y:auto;}
.drawer.open{opacity:1;transform:translateY(0);pointer-events:auto;}
.drawer a{display:block;padding:14px 12px;font-size:16px;font-weight:600;color:var(--ink);border-radius:10px;border-bottom:1px solid var(--line);}
.drawer a:hover{background:var(--g50);color:var(--g900);}
.drawer .btn{margin-top:18px;}

/* Hero */
.hero{position:relative;background:linear-gradient(180deg,#FFFFFF 0%,#F1F7F2 100%);border-bottom:1px solid var(--line);overflow:hidden;}
.hero::before{content:"";position:absolute;right:-140px;top:-120px;width:620px;height:420px;opacity:.08;background:
  repeating-linear-gradient(115deg,var(--g900) 0 2px,transparent 2px 34px);
  transform:rotate(-8deg);pointer-events:none;}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;padding:76px 24px 84px;}
.hero-copy h1{margin:18px 0 14px;}
.hero-sub{font-size:17px;line-height:1.75;color:var(--ink2);max-width:520px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 26px;}
.trust-row{display:flex;flex-wrap:wrap;gap:10px 22px;padding-top:20px;border-top:1px dashed var(--line);}
.trust-row li{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--muted);}
.trust-row svg{width:16px;height:16px;stroke:var(--g700);fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;flex:none;}
.hero-visual{position:relative;border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--sh3);}
.hero-visual img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;}
.hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(200deg,rgba(15,61,46,.42),rgba(15,61,46,.06) 55%,rgba(15,61,46,.5));}
.hero-float{position:absolute;right:16px;bottom:16px;z-index:2;background:rgba(255,255,255,.95);border-radius:14px;padding:12px 16px;display:flex;align-items:center;gap:10px;box-shadow:var(--sh2);}
.float-num{font-family:var(--num);font-size:26px;font-weight:700;color:var(--g900);line-height:1;}
.float-label{font-size:12.5px;color:var(--ink2);line-height:1.4;max-width:110px;}

/* 设备路线 */
.route-strip{display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:20px;}
.route-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);padding:26px 24px;box-shadow:var(--sh1);transition:transform var(--t),box-shadow var(--t);display:flex;flex-direction:column;gap:12px;}
.route-card:hover{transform:translateY(-2px);box-shadow:var(--sh2);}
.route-card .icon{width:42px;height:42px;border-radius:12px;background:var(--g50);display:grid;place-items:center;}
.route-card .icon svg{width:22px;height:22px;stroke:var(--g900);fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;}
.route-card p{font-size:14.5px;color:var(--ink2);}
.route-card.primary{background:linear-gradient(160deg,#0F3D2E,#14604A);border-color:transparent;color:#CFE7DB;}
.route-card.primary h3{color:#fff;}
.route-card.primary p{color:#C6E2D5;}
.route-card.primary .icon{background:rgba(255,255,255,.12);}
.route-card.primary .icon svg{stroke:#fff;}

/* 优惠阶梯 */
.steps-ladder{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;align-items:end;}
.ladder-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);padding:24px 22px;box-shadow:var(--sh1);position:relative;transition:transform var(--t),box-shadow var(--t);}
.ladder-item:hover{transform:translateY(-4px);box-shadow:var(--sh2);}
.ladder-item .tier{font-size:12px;font-weight:600;color:var(--muted);letter-spacing:1px;}
.ladder-item h3{margin:10px 0 14px;}
.ladder-item ul{display:flex;flex-direction:column;gap:9px;margin-bottom:20px;}
.ladder-item li{display:flex;gap:9px;font-size:14px;color:var(--ink2);line-height:1.65;}
.ladder-item li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--or);margin-top:9px;flex:none;}
.ladder-threshold{font-family:var(--num);font-size:30px;font-weight:700;color:var(--g900);line-height:1;padding-top:14px;border-top:1px dashed var(--line);margin-bottom:6px;}
.ladder-threshold small{font-size:13px;font-weight:500;color:var(--muted);margin-left:4px;letter-spacing:0;}
.ladder-item.recommend{border:2px solid var(--or);background:#FFFCFA;}
.ladder-item.recommend .tier{color:var(--or-d);}
.ladder-tag{position:absolute;top:-12px;left:22px;background:var(--or);color:#1A0E05;font-size:12px;font-weight:600;border-radius:var(--r-p);padding:3px 10px;}
.ladder-item:nth-child(1){margin-bottom:0;}
.ladder-item:nth-child(2){margin-bottom:4px;}
.ladder-item:nth-child(3){margin-bottom:8px;}
.ladder-item:nth-child(4){margin-bottom:12px;}

/* 套餐对比 */
.compare-wrap{overflow-x:auto;border-radius:var(--r-l);}
.compare{width:100%;min-width:820px;border-collapse:separate;border-spacing:0;}
.compare th,.compare td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--line);font-size:14.5px;background:var(--card);vertical-align:middle;}
.compare thead th{position:sticky;top:64px;z-index:2;background:#FBFDFB;font-size:13px;color:var(--muted);font-weight:600;letter-spacing:.5px;border-bottom:1px solid var(--line);}
.compare tbody th{font-weight:500;color:var(--ink2);font-size:14px;position:sticky;left:0;z-index:1;background:var(--card);min-width:170px;}
.compare .plan-col{text-align:center;}
.compare .plan-col .plan-name{font-size:15px;font-weight:600;color:var(--ink);}
.compare .price{font-family:var(--num);font-size:34px;font-weight:700;color:var(--g900);line-height:1;}
.compare .price small{font-size:14px;font-weight:500;color:var(--muted);margin-left:2px;}
.compare .old-price{display:block;font-size:13px;color:#9AA6A0;text-decoration:line-through;font-family:var(--num);margin-top:6px;}
.compare .col-hot{background:var(--g50);border-left:2px solid var(--or);border-right:2px solid var(--or);}
.compare thead .col-hot{border-top:2px solid var(--or);}
.compare tbody tr:last-child .col-hot{border-bottom:2px solid var(--or);}
.compare td.col-hot{background:var(--g50);}
.plan-badge{display:inline-block;background:var(--or);color:#1A0E05;font-size:11.5px;font-weight:600;border-radius:var(--r-p);padding:2px 9px;margin-bottom:8px;}
.compare-actions{display:flex;flex-direction:column;gap:8px;align-items:center;}
.compare-note{font-size:12.5px;color:var(--muted);margin-top:16px;}

/* 限时入口 */
.timing{background:linear-gradient(150deg,#0B2A20,#0F3D2E 55%,#14604A);border-radius:var(--r-xl);padding:48px;color:#DCEFE5;box-shadow:var(--sh3);}
.timing-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;}
.timing h2{color:#fff;}
.timing .lead{color:#B9D6C8;font-size:15px;margin-top:12px;max-width:420px;}
.countdown{display:flex;align-items:center;gap:12px;margin-top:26px;}
.count-block{width:64px;height:64px;border-radius:12px;background:rgba(255,255,255,.12);display:grid;place-items:center;font-family:var(--num);font-size:26px;font-weight:700;color:#fff;}
.count-sep{font-family:var(--num);font-size:24px;color:var(--g300);}
.count-label{font-size:12px;color:#9FC4B3;margin-top:10px;letter-spacing:.5px;}
.timing-side{display:flex;flex-direction:column;gap:14px;align-items:flex-start;}
.timing-side .hint{font-size:12.5px;color:#9FC4B3;}
.flow{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:40px;padding-top:32px;border-top:1px solid rgba(255,255,255,.12);}
.flow-item{display:flex;gap:14px;align-items:flex-start;}
.flow-num{width:34px;height:34px;border-radius:50%;border:1.5px solid var(--or);color:#FFC7A8;display:grid;place-items:center;font-family:var(--num);font-size:15px;font-weight:700;flex:none;}
.flow-item p{font-size:14.5px;color:#CFE7DB;}
.flow-item strong{display:block;color:#fff;font-size:15px;margin-bottom:2px;}

/* 最新信息 */
.news-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:24px;}
.news-lead{background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden;box-shadow:var(--sh1);transition:transform var(--t),box-shadow var(--t);}
.news-lead:hover{transform:translateY(-2px);box-shadow:var(--sh2);}
.news-lead a{display:block;color:inherit;}
.news-lead-media img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.news-lead-body{padding:22px 24px 24px;}
.news-lead-body h3{margin:12px 0 10px;font-size:22px;}
.news-lead-body p{font-size:14.5px;color:var(--ink2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-side{display:flex;flex-direction:column;gap:16px;}
.news-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-m);box-shadow:var(--sh1);transition:transform var(--t),box-shadow var(--t);}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh2);}
.news-card a{display:flex;gap:16px;padding:14px;color:inherit;align-items:center;}
.news-thumb{width:120px;height:88px;border-radius:12px;overflow:hidden;flex:none;}
.news-thumb img{width:100%;height:100%;object-fit:cover;}
.news-body h3{font-size:16px;line-height:1.5;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body p{font-size:13px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:8px;}
.news-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--muted);flex-wrap:wrap;}
.news-meta time{font-family:var(--num);}
.news-meta .arrow{transition:transform var(--t);color:var(--g700);font-weight:700;}
.news-card:hover .arrow,.news-lead:hover .arrow{transform:translateX(4px);}
.news-empty{border:1px dashed var(--line);border-radius:var(--r-l);height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;background:#FBFDFB;grid-column:1/-1;}
.news-empty svg{width:28px;height:28px;stroke:var(--muted);fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;}
.news-empty p{font-size:14px;color:var(--muted);}

/* 安全区 */
.safety{background:var(--g50);border-top:1px solid #DCEBE3;border-bottom:1px solid #DCEBE3;}
.safety-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:20px;}
.safety-main{background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);padding:30px;box-shadow:var(--sh1);}
.safety-main p{margin-top:14px;font-size:14.5px;}
.safety-main ul{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.safety-main li{display:flex;gap:10px;font-size:14.5px;color:var(--ink2);}
.safety-main li svg{width:18px;height:18px;stroke:var(--ok);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:none;margin-top:5px;}
.safety-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);padding:26px 22px;box-shadow:var(--sh1);transition:transform var(--t),box-shadow var(--t);}
.safety-card:hover{transform:translateY(-2px);box-shadow:var(--sh2);}
.safety-card .icon{width:40px;height:40px;border-radius:12px;background:var(--or-s);display:grid;place-items:center;margin-bottom:14px;}
.safety-card .icon svg{width:20px;height:20px;stroke:var(--or-d);fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;}
.safety-card p{font-size:14px;margin-top:8px;}

/* FAQ */
.faq-wrap{max-width:720px;margin:0 auto;}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r-m);margin-bottom:12px;overflow:hidden;transition:border-color var(--t),box-shadow var(--t);}
.faq-item.open{border-color:#CFE7DB;box-shadow:var(--sh2);}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;padding:18px 20px;font-size:16px;font-weight:600;color:var(--ink);transition:background var(--t);}
.faq-q:hover{background:#FBFDFB;}
.faq-item.open .faq-q{box-shadow:inset 3px 0 0 var(--or);}
.faq-q svg{width:20px;height:20px;stroke:var(--g700);fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;flex:none;transition:transform var(--t);}
.faq-item.open .faq-q svg{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms cubic-bezier(.2,.7,.3,1);}
.faq-a p{padding:0 20px 20px;font-size:14.5px;color:var(--ink2);max-width:60ch;}

/* 表单 */
.contact-grid{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:start;}
.contact-info .lead{margin-top:14px;font-size:15px;}
.contact-list{margin-top:26px;display:flex;flex-direction:column;gap:16px;}
.contact-list li{display:flex;gap:12px;font-size:14.5px;color:var(--ink2);}
.contact-list svg{width:20px;height:20px;stroke:var(--g700);fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;flex:none;margin-top:4px;}
.form-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);padding:28px;box-shadow:var(--sh2);}
.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:600;color:var(--ink2);margin-bottom:7px;}
.field input,.field select,.field textarea{width:100%;height:44px;border:1px solid var(--line);border-radius:10px;padding:0 14px;background:#FBFDFB;font-size:14.5px;color:var(--ink);transition:border-color var(--t),box-shadow var(--t),background var(--t);}
.field textarea{height:auto;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--g700);background:#fff;box-shadow:0 0 0 3px rgba(255,106,43,.22);}
.field .error-text{display:none;font-size:12px;color:var(--err);margin-top:6px;}
.field.invalid input,.field.invalid select{border-color:var(--err);}
.field.invalid .error-text{display:block;}
.checkbox{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--ink2);margin:4px 0 20px;}
.checkbox input{width:18px;height:18px;height:18px;margin-top:4px;accent-color:var(--g700);flex:none;}
.form-success{display:none;background:#E8F5EE;border:1px solid #C6E6D4;color:#12684A;border-radius:10px;padding:12px 16px;font-size:14px;margin-bottom:16px;}
.form-success.show{display:block;}

/* 页脚 */
.site-footer{background:#0B2A20;color:#A9C9BA;padding:64px 0 0;margin-top:0;border-top:1px solid rgba(255,255,255,.08);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px;}
.footer-brand .brand-text strong{color:#fff;}
.footer-brand .brand-text em{color:#7FA491;}
.footer-brand p{font-size:14px;margin-top:16px;color:#9FC4B3;max-width:300px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:#A9C9BA;border-bottom:2px solid transparent;padding-bottom:1px;transition:color var(--t),border-color var(--t);}
.footer-col a:hover{color:#fff;border-color:var(--or);}
.footer-col li{font-size:14px;line-height:1.7;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;display:flex;flex-wrap:wrap;align-items:center;gap:12px 24px;font-size:12.5px;color:#88A697;}
.footer-bottom .mono{color:#9FC4B3;}
.footer-bottom .spacer{flex:1;}
.to-top{display:inline-flex;align-items:center;gap:6px;color:#DCEFE5;font-size:12.5px;border:1px solid rgba(255,255,255,.18);border-radius:var(--r-p);padding:6px 14px;transition:background var(--t),color var(--t);}
.to-top:hover{background:rgba(255,255,255,.1);color:#fff;}
.to-top svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}

/* 移动端底部悬浮条 */
.mobile-bar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-top:1px solid var(--line);padding:8px 16px calc(8px + env(safe-area-inset-bottom));gap:10px;}
.mobile-bar .btn{flex:1;height:44px;}
.mobile-bar .btn-accent{flex:0 0 116px;}

/* 骨架 */
.skeleton{background:linear-gradient(90deg,#EDF2EE 25%,#F7FAF7 37%,#EDF2EE 63%);background-size:400% 100%;animation:shimmer 1.4s ease infinite;border-radius:8px;}
@keyframes shimmer{0%{background-position:100% 50%;}100%{background-position:0 50%;}}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important;}
}
@media (max-width:1200px){
  .hero-grid{gap:36px;}
}
@media (max-width:1024px){
  .section{padding:64px 0;}
  .hero-grid{grid-template-columns:1fr;padding:56px 24px 64px;}
  .hero-visual{order:-1;}
  .route-strip{grid-template-columns:1fr 1fr;}
  .steps-ladder{grid-template-columns:1fr 1fr;align-items:stretch;}
  .ladder-item{margin-bottom:0 !important;}
  .timing-grid{grid-template-columns:1fr;}
  .flow{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .safety-grid{grid-template-columns:1fr 1fr;}
  .safety-main{grid-column:1/-1;}
  .contact-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:960px){
  .main-nav{display:none;}
  .command-search{display:none;}
  .nav-tools .btn-ghost{display:none;}
  .nav-toggle{display:grid;}
  .nav-tools .btn-primary{display:none;}
}
@media (max-width:768px){
  .container{padding:0 16px;}
  .hero-grid{padding:40px 16px 48px;}
  .section{padding:48px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:26px;}
  .route-strip{grid-template-columns:1fr;}
  .steps-ladder{grid-template-columns:1fr;}
  .timing{padding:28px 20px;}
  .timing-grid{gap:26px;}
  .count-block{width:54px;height:54px;font-size:22px;}
  .safety-grid{grid-template-columns:1fr;}
  .news-card a{flex-direction:row;}
  .news-thumb{width:96px;height:80px;}
  .form-row{grid-template-columns:1fr;}
  .form-card{padding:20px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .compare thead th{position:static;}
  .mobile-bar{display:flex;}
  body{padding-bottom:72px;font-size:15px;line-height:1.8;}
  .hero-sub{font-size:16px;}
}
@media (max-width:520px){
  h1{font-size:28px;}
  .hero-cta .btn{width:100%;}
  .trust-row{gap:8px 16px;}
  .countdown{gap:8px;}
  .count-block{width:48px;height:48px;font-size:20px;}
  .news-lead-body{padding:18px;}
}

/* roulang page: article */
:root{
  --green:#0F3D2E;
  --green-600:#14604A;
  --green-300:#7FBFA6;
  --green-50:#EAF4EF;
  --orange:#FF6A2B;
  --orange-700:#E2541A;
  --orange-50:#FFF0E8;
  --yellow:#FFC53D;
  --ink:#0B1512;
  --ink-2:#3D4945;
  --muted:#6B7873;
  --line:#E1E7E1;
  --page:#F5F8F4;
  --card:#FFFFFF;
  --footer-bg:#0B2A20;
  --ok:#1F8A5B;
  --warn:#C9821B;
  --err:#C8402F;
  --info:#2E6FB7;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-xl:24px;
  --sh-1:0 1px 2px rgba(11,21,18,.05);
  --sh-2:0 8px 24px -12px rgba(11,21,18,.18);
  --sh-3:0 24px 56px -24px rgba(11,21,18,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--page);
  color:var(--ink-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--green-600);text-decoration:none;transition:color .18s var(--ease),background-color .18s var(--ease)}
a:hover{color:var(--green)}
h1,h2,h3,h4{color:var(--ink);margin:0;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
input,select,textarea{font:inherit;color:inherit}
svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.mono{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
:focus-visible{outline:0;box-shadow:0 0 0 3px rgba(255,106,43,.35);border-radius:6px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:10px;
  font-size:15px;font-weight:600;letter-spacing:.2px;white-space:nowrap;
  transition:background-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn svg{width:18px;height:18px}
.btn-primary{background:var(--green);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--green-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-accent{background:var(--orange);color:#1A0E05}
.btn-accent:hover{background:#FF7F45;color:#1A0E05;transform:translateY(-1px);box-shadow:0 0 0 4px var(--orange-50)}
.btn-secondary{background:transparent;color:var(--green);border:1.5px solid var(--green)}
.btn-secondary:hover{background:var(--green-50);color:var(--green);transform:translateY(-1px)}
.btn-outline-light{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.45)}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:9px}
.btn-block{width:100%}
.btn-ghost{
  display:inline-flex;align-items:center;gap:6px;height:40px;padding:0 14px;border-radius:9px;
  color:var(--ink-2);font-size:14px;font-weight:500;
}
.btn-ghost:hover{background:var(--green-50);color:var(--green)}
.link-underline{
  display:inline-flex;align-items:center;gap:6px;color:var(--green);font-weight:600;font-size:15px;
  background-image:linear-gradient(var(--orange),var(--orange));
  background-repeat:no-repeat;background-size:100% 2px;background-position:0 100%;
  padding-bottom:3px;transition:background-size .2s var(--ease),color .18s var(--ease);
}
.link-underline:hover{color:var(--green-600);background-size:100% 2px}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:5px;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1;
}
.badge-green{background:var(--green-50);color:var(--green)}
.badge-orange{background:var(--orange-50);color:var(--orange-700)}

/* 页头 */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);transition:box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.site-header.scrolled{box-shadow:0 8px 24px -18px rgba(11,21,18,.4);background:rgba(255,255,255,.86);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.nav-inner{display:flex;align-items:center;gap:24px;height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);flex:0 0 auto}
.brand:hover{color:var(--ink)}
.brand-mark{
  display:grid;place-items:center;width:36px;height:36px;border-radius:10px;
  background:linear-gradient(140deg,var(--green),var(--green-600));color:#fff;flex:0 0 auto;
}
.brand-mark svg{width:20px;height:20px;stroke-width:1.6}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.2px}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:1.5px}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px}
.main-nav a{
  position:relative;padding:8px 12px;border-radius:8px;font-size:14.5px;color:var(--ink-2);font-weight:500;
}
.main-nav a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--orange);transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease);
}
.main-nav a:hover{color:var(--green);background:var(--green-50)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:var(--green);font-weight:600}
.main-nav a.active::after{transform:scaleX(1)}
.nav-tools{display:flex;align-items:center;gap:10px;margin-left:auto}
.command-search{
  position:relative;display:flex;align-items:center;gap:8px;width:280px;height:40px;padding:0 10px 0 12px;
  background:#fff;border:1px solid var(--line);border-radius:10px;transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.command-search svg{width:18px;height:18px;color:var(--muted);flex:0 0 auto}
.command-search input{flex:1;min-width:0;border:0;outline:0;background:transparent;font-size:13.5px;color:var(--ink)}
.command-search input::placeholder{color:#9AA6A0}
.command-search kbd{
  font-family:inherit;font-size:11px;color:var(--muted);background:var(--page);
  border:1px solid var(--line);border-radius:6px;padding:2px 6px;flex:0 0 auto;
}
.command-search.open{border-color:var(--green-300);box-shadow:0 0 0 3px rgba(20,96,74,.12)}
.search-panel{
  position:absolute;top:calc(100% + 10px);left:0;right:0;padding:16px 16px 14px;
  background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--sh-3);
  opacity:0;visibility:hidden;transform:translateY(-6px);transition:all .18s var(--ease);
}
.command-search.open .search-panel{opacity:1;visibility:visible;transform:translateY(0)}
.panel-title{margin:0 0 8px;font-size:11px;font-weight:600;letter-spacing:1px;color:var(--muted)}
.panel-title+.panel-chips{margin-bottom:14px}
.panel-chips{display:flex;flex-wrap:wrap;gap:8px}
.panel-chips a{
  display:inline-flex;height:28px;align-items:center;padding:0 10px;border-radius:999px;
  background:var(--green-50);color:var(--green);font-size:12px;font-weight:600;
}
.panel-chips a:hover{background:var(--green-300);color:var(--green)}
.panel-list li{font-size:13px;color:var(--ink-2);padding:6px 0;border-bottom:1px dashed var(--line)}
.panel-list li:last-child{border-bottom:0}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;color:var(--ink);place-items:center}
.nav-toggle:hover{background:var(--green-50);color:var(--green)}

/* 文章主区 */
.article-main{padding-bottom:0}
.article-hero{
  background:linear-gradient(180deg,#EFF6F1 0%,var(--page) 100%);
  border-bottom:1px solid var(--line);
  padding:28px 0 40px;
  position:relative;overflow:hidden;
}
.article-hero::after{
  content:"";position:absolute;right:-80px;top:-60px;width:420px;height:420px;
  background:repeating-linear-gradient(115deg,rgba(15,61,46,.08) 0 2px,transparent 2px 26px);
  opacity:.7;pointer-events:none;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:var(--muted);position:relative;z-index:1}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--green)}
.breadcrumb .sep{color:#B9C4BD}
.breadcrumb .current{color:#98A49E;max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-title{
  position:relative;z-index:1;
  margin:18px 0 0;max-width:900px;
  font-size:clamp(26px,3.4vw,40px);line-height:1.25;font-weight:700;letter-spacing:-.4px;
}
.article-meta{position:relative;z-index:1;display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:18px;font-size:13px;color:var(--muted)}
.article-meta .meta-item b{color:var(--ink-2);font-weight:600}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#C6D0C9}

.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:48px;padding:52px 0 8px}
.article-wrap{min-width:0;background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:36px 40px 32px}
.article-body{font-size:16px;line-height:1.85;color:var(--ink-2);max-width:760px}
.article-body>*+*{margin-top:18px}
.article-body h2{
  font-size:clamp(20px,2.2vw,24px);font-weight:700;color:var(--ink);
  margin-top:40px;padding-left:14px;border-left:4px solid var(--orange);line-height:1.4;scroll-margin-top:96px;
}
.article-body h3{font-size:19px;font-weight:600;color:var(--ink);margin-top:30px;scroll-margin-top:96px}
.article-body h4{font-size:17px;font-weight:600;color:var(--ink);margin-top:24px}
.article-body p{color:var(--ink-2)}
.article-body strong{color:var(--ink);font-weight:600}
.article-body a{color:var(--green-600);text-decoration:underline;text-decoration-color:var(--orange);text-underline-offset:4px}
.article-body a:hover{color:var(--green)}
.article-body ul,.article-body ol{padding-left:24px}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-top:8px}
.article-body li::marker{color:var(--green-300)}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;background:var(--green-50);
  border-left:4px solid var(--green-300);border-radius:0 12px 12px 0;color:var(--green);font-size:15.5px;
}
.article-body blockquote p{color:var(--green)}
.article-body img{border-radius:var(--r-md);margin:26px auto;box-shadow:var(--sh-1)}
.article-body table{width:100%;border-collapse:collapse;margin-top:24px;font-size:15px}
.article-body th,.article-body td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line)}
.article-body th{background:var(--green-50);color:var(--ink);font-weight:600}
.article-body code{background:#F0F4F0;border-radius:6px;padding:2px 6px;font-size:14px;color:var(--green)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}

.article-empty{display:flex;flex-direction:column;align-items:center;text-align:center;padding:56px 20px;gap:12px}
.article-empty .empty-icon{
  display:grid;place-items:center;width:56px;height:56px;border-radius:14px;background:var(--green-50);color:var(--green);
}
.article-empty .empty-icon svg{width:26px;height:26px}
.article-empty p{font-size:17px;font-weight:600;color:var(--ink)}
.article-empty .empty-sub{font-size:14px;font-weight:400;color:var(--muted);max-width:420px;line-height:1.8}
.article-empty .btn{margin-top:8px}

.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:36px;padding-top:24px;border-top:1px dashed var(--line)}
.tag-label{font-size:13px;color:var(--muted)}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 12px;border-radius:999px;
  background:var(--page);border:1px solid var(--line);color:var(--ink-2);font-size:13px;
  transition:all .18s var(--ease);
}
.tag:hover{background:var(--orange-50);border-color:var(--orange);color:var(--orange-700)}
.article-actions{display:flex;flex-wrap:wrap;align-items:center;gap:20px;margin-top:26px}

/* 目录 */
.article-toc{display:none}
.toc-title{margin:0 0 14px;font-size:12px;font-weight:600;letter-spacing:1.5px;color:var(--muted)}
.toc-list{display:flex;flex-direction:column;gap:2px;border-left:2px solid var(--line);padding-left:0}
.toc-link{
  display:block;padding:6px 12px;font-size:13px;line-height:1.6;color:var(--muted);
  border-left:2px solid transparent;margin-left:-2px;
}
.toc-link:hover{color:var(--green);border-left-color:var(--green-300)}
.toc-link.lvl-3{padding-left:26px;font-size:12.5px}
.toc-cta{margin-top:24px;padding:16px;background:var(--green-50);border-radius:var(--r-md);text-align:center}
.toc-cta p{margin:0 0 10px;font-size:13px;color:var(--green);font-weight:600}

/* 相关推荐 */
.related-section{padding:72px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px}
.section-head h2{font-size:clamp(22px,2.4vw,30px);font-weight:700}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.related-card{
  display:flex;flex-direction:column;gap:12px;
  padding:24px;background:var(--card);border:1px solid var(--line);border-left:3px solid var(--green-300);
  border-radius:var(--r-md);box-shadow:var(--sh-1);color:var(--ink-2);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-left-color:var(--orange);color:var(--ink-2)}
.related-index{font-size:13px;font-weight:700;color:var(--orange);letter-spacing:1px}
.related-card h3{font-size:17px;font-weight:600;line-height:1.45}
.related-card p{font-size:14px;color:var(--muted);line-height:1.8}
.related-go{display:inline-flex;align-items:center;gap:6px;margin-top:auto;font-size:13.5px;font-weight:600;color:var(--green)}
.related-go svg{width:16px;height:16px;transition:transform .18s var(--ease)}
.related-card:hover .related-go svg{transform:translateX(4px)}

/* 窄 CTA */
.narrow-cta{padding:64px 0 88px}
.narrow-cta-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  background:linear-gradient(135deg,var(--green) 0%,#0B2A20 100%);
  border-radius:var(--r-xl);padding:32px 40px;color:#fff;box-shadow:var(--sh-3);
}
.narrow-cta-inner h3{color:#fff;font-size:22px;font-weight:700}
.narrow-cta-inner p{margin-top:8px;font-size:14px;color:rgba(255,255,255,.78);max-width:560px;line-height:1.8}
.narrow-cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* 页脚 */
.site-footer{background:var(--footer-bg);color:#A9C7BB;border-top:1px solid rgba(255,255,255,.08);font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;padding:56px 0 40px}
.footer-brand .brand{color:#fff;margin-bottom:16px}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text em{color:#7FBFA6}
.footer-brand p{font-size:13.5px;line-height:1.85;color:#8FB4A6;max-width:340px}
.footer-col h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:13.5px;color:#8FB4A6}
.footer-col a{color:#8FB4A6;font-size:13.5px;padding-bottom:2px;background-image:linear-gradient(var(--orange),var(--orange));background-repeat:no-repeat;background-size:0 2px;background-position:0 100%;transition:background-size .2s var(--ease),color .18s var(--ease)}
.footer-col a:hover{color:#fff;background-size:100% 2px}
.footer-col .mono{color:#C7DFD4}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  padding:20px 0 32px;border-top:1px solid rgba(255,255,255,.08);
  font-size:12.5px;color:#7E9E92;
}
.footer-bottom .spacer{flex:1}
.to-top{display:inline-flex;align-items:center;gap:6px;color:#A9C7BB;font-size:12.5px}
.to-top svg{width:16px;height:16px}
.to-top:hover{color:#fff}

/* 响应式 */
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,760px) 200px;justify-content:center}
  .article-toc{display:block;position:sticky;top:92px;align-self:start;height:max-content}
}
@media (max-width:1024px){
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:960px){
  .main-nav{
    position:fixed;inset:64px 0 0 0;background:#fff;flex-direction:column;align-items:stretch;gap:0;
    padding:16px 24px;transform:translateX(100%);transition:transform .24s var(--ease);overflow-y:auto;margin-left:0;
  }
  .main-nav.open{transform:translateX(0)}
  .main-nav a{padding:14px 12px;font-size:16px;border-radius:10px}
  .main-nav a::after{display:none}
  .main-nav a.active{background:var(--green-50)}
  .command-search{width:200px}
  .command-search kbd{display:none}
  .nav-toggle{display:grid}
  .btn-ghost{display:none}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .nav-tools .btn-primary.btn-sm{display:none}
  .command-search{width:40px;height:40px;padding:0;justify-content:center;border-radius:10px}
  .command-search input{display:none}
  .command-search .search-panel{display:none}
  .article-hero{padding:20px 0 30px}
  .article-wrap{padding:24px 18px 22px;border-radius:var(--r-md)}
  .article-layout{padding:32px 0 0;gap:32px}
  .article-body{font-size:15px;line-height:1.8}
  .related-section{padding:48px 0 0}
  .related-grid{grid-template-columns:1fr}
  .narrow-cta{padding:48px 0 64px}
  .narrow-cta-inner{padding:26px 22px;border-radius:var(--r-lg)}
  .narrow-cta-actions{width:100%}
  .narrow-cta-actions .btn{flex:1}
  .footer-grid{grid-template-columns:1fr;padding:40px 0 28px}
  .footer-bottom .spacer{display:none}
}
@media (max-width:520px){
  .article-title{font-size:24px}
  .article-meta{gap:8px}
  .breadcrumb .current{max-width:180px}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px}
  .article-actions{flex-direction:column;align-items:stretch}
  .article-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --green:#0F3D2E;--green-light:#14604A;--green-soft:#7FBFA6;--green-pale:#EAF4EF;
  --orange:#FF6A2B;--orange-deep:#E2541A;--orange-pale:#FFF0E8;--yellow:#FFC53D;
  --ink:#0B1512;--gray:#3D4945;--muted:#6B7873;--line:#E1E7E1;--bg:#F5F8F4;--card:#FFFFFF;
  --ok:#1F8A5B;--warn:#C9821B;--err:#C8402F;--info:#2E6FB7;
  --r-s:8px;--r-m:12px;--r-l:18px;--r-xl:24px;
  --sh-1:0 1px 2px rgba(11,21,18,.05);
  --sh-2:0 8px 24px -12px rgba(11,21,18,.18);
  --sh-3:0 24px 56px -24px rgba(11,21,18,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--sans);font-size:16px;line-height:1.85;color:var(--gray);
  background:var(--bg);padding-bottom:0;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--green);text-decoration:none}
a:hover{color:var(--green-light)}
button{font-family:inherit;font-size:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:inherit;color:var(--ink)}
h1,h2,h3,h4{color:var(--ink);margin:0;font-weight:700;letter-spacing:-.2px}
h1{font-size:clamp(30px,4.4vw,52px);line-height:1.15;letter-spacing:-.5px}
h2{font-size:clamp(24px,2.8vw,34px);line-height:1.25}
h3{font-size:20px;line-height:1.35;font-weight:600}
h4{font-size:17px;font-weight:600}
p{margin:0 0 16px}
ul{margin:0;padding:0;list-style:none}
svg{fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.mono,.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-sm{padding:56px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-head p{margin:8px 0 0;color:var(--muted);font-size:15px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--green-light);background:var(--green-pale);border:1px solid rgba(20,96,74,.14);border-radius:999px;padding:6px 14px}
.lead{font-size:16px;color:var(--gray);max-width:44ch}
.muted{color:var(--muted)}
.small{font-size:13px;line-height:1.6}

/* 公告条 */
.topbar{height:36px;background:var(--green);color:#EAF4EF;font-size:13px;position:relative;z-index:60}
.topbar-inner{height:36px;display:flex;align-items:center;gap:12px}
.topbar p{margin:0;flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-close{background:transparent;border:0;color:#BFD9CC;width:28px;height:28px;display:grid;place-items:center;border-radius:var(--r-s);transition:background .18s var(--ease),color .18s var(--ease)}
.topbar-close:hover{background:rgba(255,255,255,.12);color:#fff}
.topbar-close svg{width:16px;height:16px}

/* 导航 */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);border-bottom:1px solid var(--line);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);transition:box-shadow .2s var(--ease)}
.site-header.is-stuck{box-shadow:var(--sh-2)}
.nav-inner{height:64px;display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);flex-shrink:0}
.brand:hover{color:var(--ink)}
.brand-mark{width:36px;height:36px;border-radius:10px;background:var(--green);color:#EAF4EF;display:grid;place-items:center;flex-shrink:0}
.brand-mark svg{width:22px;height:22px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:15px;font-weight:700;letter-spacing:-.2px}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.08em}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px}
.main-nav a{position:relative;padding:8px 12px;font-size:15px;color:var(--gray);border-radius:var(--r-s);transition:color .18s var(--ease),background .18s var(--ease)}
.main-nav a:hover{color:var(--green);background:var(--green-pale)}
.main-nav a.active{color:var(--green);font-weight:600}
.main-nav a.active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--orange)}
.nav-tools{display:flex;align-items:center;gap:12px;margin-left:auto}
.command-search{position:relative;width:280px}
.command-search>svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:18px;height:18px;color:var(--muted);pointer-events:none}
.command-search input{width:100%;height:40px;border:1px solid var(--line);border-radius:10px;background:#fff;padding:0 60px 0 38px;color:var(--ink);outline:none;transition:border-color .18s var(--ease),box-shadow .18s var(--ease)}
.command-search input:focus{border-color:var(--green-light);box-shadow:0 0 0 3px rgba(255,106,43,.35)}
.command-search kbd{position:absolute;right:10px;top:50%;transform:translateY(-50%);font-size:11px;font-family:var(--sans);color:var(--muted);background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:2px 6px}
.search-panel{position:absolute;top:calc(100% + 10px);left:0;right:0;background:#fff;border:1px solid var(--line);border-radius:var(--r-m);box-shadow:var(--sh-3);padding:16px;opacity:0;visibility:hidden;transform:translateY(-6px);transition:opacity .18s var(--ease),transform .18s var(--ease),visibility .18s var(--ease);z-index:70}
.command-search:focus-within .search-panel,.search-panel.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.panel-title{margin:0 0 8px;font-size:12px;font-weight:600;color:var(--muted);letter-spacing:.04em}
.panel-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.panel-chips a{font-size:13px;padding:5px 12px;border-radius:999px;background:var(--green-pale);color:var(--green-light);border:1px solid rgba(20,96,74,.12);transition:background .18s var(--ease)}
.panel-chips a:hover{background:#DCEBE2}
.panel-list li{font-size:13px;color:var(--gray);padding:7px 0;border-top:1px solid var(--line)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:10px;font-weight:600;font-size:15px;height:46px;padding:0 22px;transition:transform .18s var(--ease),background .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease)}
.btn svg{width:18px;height:18px}
.btn-primary{background:var(--green);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--green-light);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-accent{background:var(--orange);color:#1A0E05;box-shadow:var(--sh-1)}
.btn-accent:hover{background:#FF7F45;color:#1A0E05;transform:translateY(-1px);box-shadow:0 0 0 4px var(--orange-pale)}
.btn-outline{background:transparent;border:1.5px solid var(--green);color:var(--green)}
.btn-outline:hover{background:var(--green-pale);color:var(--green-light);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn:focus-visible,.btn-ghost:focus-visible,.main-nav a:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(255,106,43,.35)}
.btn-ghost{display:inline-flex;align-items:center;gap:6px;height:40px;padding:0 14px;border-radius:10px;background:transparent;border:1px solid transparent;color:var(--gray);font-size:14px;font-weight:600;transition:background .18s var(--ease),color .18s var(--ease)}
.btn-ghost svg{width:18px;height:18px}
.btn-ghost:hover{background:var(--green-pale);color:var(--green)}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--gray);place-items:center}
.nav-toggle svg{width:22px;height:22px}
.text-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--green);font-size:15px}
.text-link svg{width:16px;height:16px;transition:transform .18s var(--ease)}
.text-link::after{content:"";position:absolute}
.text-link{border-bottom:2px solid rgba(255,106,43,.35);padding-bottom:2px;transition:border-color .18s var(--ease)}
.text-link:hover{border-bottom-color:var(--orange);color:var(--green-light)}
.text-link:hover svg{transform:translateX(3px)}

/* 徽章 */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;line-height:1;padding:6px 10px;border-radius:999px;border:1px solid transparent}
.badge-orange{background:var(--orange-pale);color:var(--orange-deep);border-color:rgba(226,84,26,.18)}
.badge-green{background:var(--green-pale);color:var(--green-light);border-color:rgba(20,96,74,.16)}
.badge-gray{background:#EEF2EE;color:var(--muted);border-color:var(--line)}

/* 分类页页头 */
.page-hero{position:relative;background:var(--green-pale);border-bottom:1px solid var(--line);overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240' viewBox='0 0 240 240'><g stroke='%230F3D2E' stroke-width='10' fill='none' opacity='0.5'><path d='M-40 200 L120 -20'/><path d='M10 250 L170 30'/><path d='M60 290 L220 70'/></g></svg>");opacity:.07;pointer-events:none}
.page-hero .container{position:relative;min-height:250px;padding-top:40px;padding-bottom:40px;display:grid;grid-template-columns:1.35fr .65fr;gap:40px;align-items:center}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:16px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--green)}
.breadcrumb span.current{color:var(--muted)}
.breadcrumb svg{width:14px;height:14px}
.page-hero h1{margin-bottom:14px}
.page-hero .lead{font-size:16px;max-width:52ch;margin:0}
.page-hero-visual{border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--sh-2);border:1px solid rgba(15,61,46,.08);background:#fff}
.page-hero-visual img{width:100%;height:200px;object-fit:cover}
.page-hero-visual figcaption{font-size:13px;color:var(--muted);padding:10px 14px;border-top:1px solid var(--line);background:#fff}

/* 步骤流 */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;counter-reset:step}
.step{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);padding:26px 20px 22px;box-shadow:var(--sh-1);transition:transform .18s var(--ease),box-shadow .18s var(--ease)}
.step:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.step-num{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;font-size:22px;font-weight:700;color:#fff;background:var(--green);font-variant-numeric:tabular-nums;box-shadow:0 0 0 6px var(--green-pale)}
.step h3{margin:18px 0 8px;font-size:18px}
.step p{margin:0;font-size:14px;color:var(--gray)}
.step::after{content:"";position:absolute;top:52px;right:-20px;width:20px;height:2px;background:var(--green-soft);opacity:.6}
.step:last-child::after{display:none}
.steps-note{margin-top:24px;display:flex;gap:12px;align-items:flex-start;background:#fff;border:1px dashed var(--green-soft);border-radius:var(--r-m);padding:16px 18px;font-size:14px}
.steps-note svg{width:20px;height:20px;color:var(--green-light);flex-shrink:0;margin-top:4px}

/* 设备卡 */
.device-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.device-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;transition:transform .18s var(--ease),box-shadow .18s var(--ease)}
.device-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.device-card img{height:150px;object-fit:cover}
.device-body{padding:22px;flex:1;display:flex;flex-direction:column}
.device-body h3{margin-bottom:10px}
.device-body p{font-size:14px;margin-bottom:14px}
.tick-list li{position:relative;padding-left:20px;font-size:14px;color:var(--gray);margin-bottom:8px}
.tick-list li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;background:var(--orange)}
.device-tag{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);display:flex;justify-content:space-between}

/* 指标卡 */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.metric{background:#fff;border:1px solid var(--line);border-radius:var(--r-m);padding:22px;box-shadow:var(--sh-1)}
.metric strong{display:block;font-size:34px;line-height:1.1;color:var(--green);font-variant-numeric:tabular-nums;letter-spacing:-1px}
.metric span{display:block;margin-top:8px;font-size:14px;font-weight:600;color:var(--ink)}
.metric em{display:block;font-style:normal;font-size:13px;color:var(--muted);margin-top:4px}

/* 现象 / 处理对照 */
.pairs{display:flex;flex-direction:column;gap:16px}
.pair-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.pair{border-radius:var(--r-m);padding:20px 22px;border:1px solid var(--line);background:#fff;box-shadow:var(--sh-1);display:flex;gap:14px}
.pair-symptom{background:#FFFBF8;border-color:rgba(226,84,26,.22)}
.pair-fix{background:var(--green-pale);border-color:rgba(20,96,74,.18)}
.pair-icon{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;flex-shrink:0}
.pair-symptom .pair-icon{background:var(--orange-pale);color:var(--orange-deep)}
.pair-fix .pair-icon{background:#fff;color:var(--green-light)}
.pair-icon svg{width:20px;height:20px}
.pair h4{margin-bottom:6px}
.pair p{margin:0;font-size:14px;color:var(--gray)}
.pair-label{font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;margin-bottom:6px;display:block}
.pair-symptom .pair-label{color:var(--orange-deep)}
.pair-fix .pair-label{color:var(--green-light)}

/* FAQ */
.faq-wrap{max-width:720px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-m);margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-1);transition:box-shadow .18s var(--ease)}
.faq-item.is-open{box-shadow:var(--sh-2)}
.faq-q{width:100%;background:transparent;border:0;display:flex;align-items:center;gap:14px;text-align:left;padding:18px 20px;font-size:16px;font-weight:600;color:var(--ink);position:relative;line-height:1.6}
.faq-q::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;background:transparent;transition:background .18s var(--ease)}
.faq-item.is-open .faq-q::before{background:var(--orange)}
.faq-q span{flex:1}
.faq-q svg{width:20px;height:20px;color:var(--muted);flex-shrink:0;transition:transform .2s var(--ease)}
.faq-item.is-open .faq-q svg{transform:rotate(180deg);color:var(--green-light)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s var(--ease)}
.faq-a p{margin:0;padding:0 20px 20px;font-size:15px;color:var(--gray)}

/* 窄 CTA */
.cta-band{background:var(--green);border-radius:var(--r-xl);padding:40px 44px;display:flex;align-items:center;gap:32px;box-shadow:var(--sh-3);position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;background:rgba(255,255,255,.05)}
.cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,30px);margin-bottom:10px}
.cta-band p{color:#BFD9CC;margin:0;font-size:15px;max-width:56ch}
.cta-actions{display:flex;gap:12px;flex-shrink:0;margin-left:auto;position:relative;z-index:1}
.cta-band .btn-outline{border-color:rgba(234,244,239,.6);color:#EAF4EF}
.cta-band .btn-outline:hover{background:rgba(255,255,255,.12);color:#fff}

/* 页脚 */
.site-footer{background:#0B2A20;color:#BFD9CC;margin-top:88px;border-top:1px solid rgba(255,255,255,.08)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 48px}
.footer-brand .brand{color:#EAF4EF;margin-bottom:16px}
.footer-brand .brand:hover{color:#fff}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);color:#EAF4EF}
.footer-brand .brand-text em{color:#8FB6A4}
.footer-brand p{font-size:14px;line-height:1.8;color:#9FC3B2;max-width:38ch}
.footer-col h4{color:#EAF4EF;font-size:15px;margin-bottom:16px}
.footer-col li{margin-bottom:10px;font-size:14px;color:#9FC3B2}
.footer-col a{color:#9FC3B2;border-bottom:2px solid transparent;transition:color .18s var(--ease),border-color .18s var(--ease)}
.footer-col a:hover{color:#fff;border-bottom-color:var(--orange)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0 28px;display:flex;align-items:center;gap:16px;flex-wrap:wrap;font-size:13px;color:#8FB6A4}
.footer-bottom .mono{color:#BFD9CC}
.footer-bottom .spacer{flex:1}
.to-top{display:inline-flex;align-items:center;gap:8px;color:#BFD9CC;border:1px solid rgba(255,255,255,.16);border-radius:999px;padding:8px 16px;transition:background .18s var(--ease),color .18s var(--ease)}
.to-top svg{width:16px;height:16px}
.to-top:hover{background:rgba(255,255,255,.1);color:#fff}

/* 移动端悬浮条 */
.mobile-bar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:80;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-top:1px solid var(--line);padding:8px 16px calc(8px + env(safe-area-inset-bottom));gap:10px;box-shadow:0 -8px 24px -18px rgba(11,21,18,.35)}
.mobile-bar .btn{flex:1;height:44px;font-size:15px}

/* 骨架 */
.skeleton{background:linear-gradient(90deg,#EDF1ED 25%,#F6F8F5 37%,#EDF1ED 63%);background-size:400% 100%;animation:shimmer 1.4s ease infinite;border-radius:var(--r-s)}
@keyframes shimmer{0%{background-position:100% 50%}100%{background-position:0 50%}}

/* 响应式 */
@media (max-width:1200px){
  .command-search{width:230px}
}
@media (max-width:1024px){
  .page-hero .container{grid-template-columns:1fr;min-height:0}
  .page-hero-visual{max-width:520px}
  .steps{grid-template-columns:repeat(3,1fr)}
  .step::after{display:none}
  .device-grid{grid-template-columns:repeat(2,1fr)}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:960px){
  .nav-toggle{display:grid}
  .main-nav{position:fixed;top:0;left:0;right:0;bottom:0;background:#fff;flex-direction:column;align-items:stretch;gap:6px;padding:88px 24px 32px;margin:0;transform:translateY(-8px);opacity:0;visibility:hidden;transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s var(--ease);z-index:65;overflow-y:auto}
  body.nav-open .main-nav{opacity:1;visibility:visible;transform:translateY(0)}
  .main-nav a{font-size:17px;padding:14px 12px;border-radius:var(--r-m)}
  .main-nav a.active::after{left:12px;right:auto;width:28px;bottom:8px}
  .command-search{display:none}
  .btn-ghost{display:none}
  .nav-tools .btn-primary{height:38px}
  .mobile-bar{display:flex}
  body{padding-bottom:76px}
  .site-footer{margin-top:64px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 24px}
  .cta-actions{margin-left:0;width:100%;flex-wrap:wrap}
  .cta-actions .btn{flex:1;min-width:150px}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .section-sm{padding:40px 0}
  .container{padding:0 16px}
  .steps{grid-template-columns:1fr;gap:14px}
  .step{display:grid;grid-template-columns:52px 1fr;gap:16px;align-items:start;padding:20px}
  .step h3{margin:6px 0 6px}
  .step-num{box-shadow:0 0 0 4px var(--green-pale)}
  .device-grid{grid-template-columns:1fr}
  .metrics{grid-template-columns:1fr 1fr}
  .pair-row{grid-template-columns:1fr}
  .page-hero .container{padding-top:28px;padding-bottom:32px}
  .page-hero-visual img{height:170px}
  .footer-grid{grid-template-columns:1fr;padding:48px 0 32px}
  .footer-bottom{gap:10px}
  .footer-bottom .spacer{display:none}
}
@media (max-width:520px){
  body{font-size:15px;line-height:1.8}
  .nav-inner{gap:12px}
  .metrics{grid-template-columns:1fr}
  .btn{width:100%}
  .nav-tools .btn-primary{width:auto}
  .cta-actions{flex-direction:column}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --green-900:#0F3D2E;
  --green-700:#14604A;
  --green-300:#7FBFA6;
  --green-50:#EAF4EF;
  --orange:#FF6A2B;
  --orange-dark:#E2541A;
  --orange-soft:#FFF0E8;
  --yellow:#FFC53D;
  --ink:#0B1512;
  --text:#3D4945;
  --muted:#6B7873;
  --line:#E1E7E1;
  --page:#F5F8F4;
  --card:#FFFFFF;
  --footer-bg:#0B2A20;
  --success:#1F8A5B;
  --warn:#C9821B;
  --error:#C8402F;
  --info:#2E6FB7;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-xl:24px;
  --sh-1:0 1px 2px rgba(11,21,18,.05);
  --sh-2:0 8px 24px -12px rgba(11,21,18,.18);
  --sh-3:0 24px 56px -24px rgba(11,21,18,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.mono{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section--alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,2.8vw,34px);line-height:1.25;margin-bottom:12px}
.section-head p{font-size:16px;color:var(--text)}
.eyebrow{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.4px;color:var(--orange-dark);background:var(--orange-soft);border-radius:999px;padding:5px 12px;margin-bottom:14px}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:10px;border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;transition:background .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease),color .18s var(--ease);white-space:nowrap}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-primary{background:var(--green-900);color:#fff}
.btn-primary:hover{background:var(--green-700);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-accent{background:var(--orange);color:#1A0E05}
.btn-accent:hover{background:#FF7F45;transform:translateY(-1px);box-shadow:0 0 0 6px var(--orange-soft)}
.btn-outline{background:transparent;border:1.5px solid var(--green-900);color:var(--green-900)}
.btn-outline:hover{background:var(--green-50)}
.btn-light{background:#fff;color:var(--green-900)}
.btn-light:hover{background:var(--green-50);transform:translateY(-1px)}
.btn-outline-light{background:transparent;border:1.5px solid rgba(255,255,255,.6);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.12)}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(255,106,43,.35)}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--green-900);border-bottom:2px solid var(--yellow);padding-bottom:2px;transition:border-color .18s var(--ease),color .18s var(--ease)}
.text-link:hover{border-color:var(--orange);color:var(--orange-dark)}

/* 导航 */
.site-header{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.9);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:box-shadow .2s var(--ease)}
.site-header.is-scrolled{box-shadow:var(--sh-2)}
.nav-inner{display:flex;align-items:center;gap:24px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:36px;height:36px;border-radius:10px;background:var(--green-900);display:flex;align-items:center;justify-content:center}
.brand-mark svg{width:22px;height:22px;fill:none;stroke:#fff;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:700;color:var(--ink);letter-spacing:-.2px}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.6px}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px}
.main-nav a{position:relative;padding:8px 12px;font-size:15px;color:var(--text);border-radius:8px;transition:color .16s var(--ease),background .16s var(--ease)}
.main-nav a:hover{color:var(--green-900);background:var(--green-50)}
.main-nav a.active{color:var(--ink);font-weight:600}
.main-nav a.active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--orange);border-radius:2px}
.nav-tools{display:flex;align-items:center;gap:12px;margin-left:auto}
.command-search{position:relative;display:flex;align-items:center;width:280px;height:40px;border:1px solid var(--line);border-radius:10px;background:#fff;padding:0 10px;gap:8px;transition:border-color .16s var(--ease),box-shadow .16s var(--ease)}
.command-search:focus-within{border-color:var(--green-700);box-shadow:0 0 0 3px rgba(255,106,43,.22)}
.command-search svg{width:18px;height:18px;fill:none;stroke:var(--muted);stroke-width:1.75;stroke-linecap:round;flex-shrink:0}
.command-search input{flex:1;border:0;outline:none;background:transparent;font-size:14px;color:var(--ink);min-width:0}
.command-search input::placeholder{color:#9AA5A0}
.command-search kbd{font-family:inherit;font-size:11px;color:var(--muted);border:1px solid var(--line);border-radius:6px;padding:2px 6px;background:var(--page)}
.search-panel{display:none;position:absolute;top:calc(100% + 10px);left:0;width:340px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh-3);padding:16px;z-index:90}
.command-search:focus-within .search-panel{display:block}
.panel-title{font-size:12px;font-weight:600;color:var(--muted);margin-bottom:8px}
.panel-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.panel-chips a{font-size:13px;padding:5px 10px;border-radius:999px;background:var(--green-50);color:var(--green-900)}
.panel-chips a:hover{background:var(--green-300);color:#fff}
.panel-list li{font-size:13px;color:var(--text);padding:7px 0;border-top:1px solid var(--line)}
.panel-list li:first-child{border-top:0}
.btn-ghost{display:inline-flex;align-items:center;gap:6px;height:40px;padding:0 12px;border-radius:10px;font-size:14px;font-weight:600;color:var(--green-900);transition:background .16s var(--ease)}
.btn-ghost:hover{background:var(--green-50)}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:10px;align-items:center;justify-content:center}
.nav-toggle svg{width:22px;height:22px;fill:none;stroke:var(--green-900);stroke-width:1.75;stroke-linecap:round}

/* 分类页头 */
.page-hero{position:relative;overflow:hidden;background:var(--green-50);border-bottom:1px solid var(--line)}
.lane-lines{position:absolute;inset:0;opacity:.08;background-image:linear-gradient(115deg,var(--green-900) 0 2px,transparent 2px 26px);background-size:26px 26px;pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center;padding:56px 0 60px;min-height:260px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:16px}
.breadcrumb a:hover{color:var(--green-900)}
.breadcrumb em{font-style:normal;color:var(--muted)}
.page-hero h1{font-size:clamp(30px,4vw,46px);line-height:1.15;letter-spacing:-.5px;margin-bottom:14px}
.hero-lead{font-size:16px;max-width:44ch}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tag{display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;font-size:12px;font-weight:600;background:#fff;border:1px solid var(--line);color:var(--green-900)}
.tag--accent{background:var(--orange-soft);border-color:transparent;color:var(--orange-dark)}
.hero-figure{position:relative}
.hero-figure img{width:100%;height:230px;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh-2)}
.float-card{position:absolute;right:16px;bottom:-16px;display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:10px 14px;box-shadow:var(--sh-2)}
.float-card .dot{width:10px;height:10px;border-radius:50%;background:var(--success);flex-shrink:0}
.float-card strong{display:block;font-size:15px;color:var(--ink);line-height:1.2}
.float-card em{font-style:normal;font-size:12px;color:var(--muted)}

/* 阶梯 */
.ladder{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;align-items:start;padding-top:44px}
.ladder-step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:24px 22px 26px;box-shadow:var(--sh-1);transition:box-shadow .2s var(--ease),border-color .2s var(--ease)}
.ladder-step:nth-child(2){transform:translateY(-10px)}
.ladder-step:nth-child(3){transform:translateY(-20px)}
.ladder-step:nth-child(4){transform:translateY(-30px)}
.ladder-step:hover{box-shadow:var(--sh-2);border-color:var(--green-300)}
.ladder-step.is-featured{border:2px solid var(--orange);box-shadow:var(--sh-2)}
.ribbon{position:absolute;top:-13px;right:18px;font-size:12px;font-weight:600;color:#1A0E05;background:var(--yellow);border-radius:999px;padding:3px 12px}
.step-index{display:inline-block;font-size:12px;font-weight:600;color:var(--green-700);background:var(--green-50);border-radius:999px;padding:4px 10px;margin-bottom:12px}
.ladder-step h3{font-size:19px;margin-bottom:14px}
.ladder-step ul{display:flex;flex-direction:column;gap:9px;margin-bottom:18px}
.ladder-step li{position:relative;padding-left:16px;font-size:14px;color:var(--text)}
.ladder-step li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;background:var(--orange)}
.step-value{font-size:13px;color:var(--muted);padding-top:14px;border-top:1px dashed var(--line);margin-bottom:14px}
.step-value .mono{font-size:22px;font-weight:700;color:var(--ink);margin-right:4px}

/* 套餐对比 */
.compare-wrap{overflow-x:auto;border-radius:var(--r-lg);-webkit-overflow-scrolling:touch}
.compare{min-width:820px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1)}
.compare-row{display:grid;grid-template-columns:1.25fr 1fr 1fr 1fr;border-top:1px solid var(--line)}
.compare-row:first-child{border-top:0}
.compare-cell{padding:18px 20px;font-size:14px;color:var(--text);display:flex;flex-direction:column;justify-content:center;gap:4px;border-left:1px solid var(--line)}
.compare-cell:first-child{border-left:0}
.compare-label{position:sticky;left:0;z-index:2;background:#fff;font-weight:600;color:var(--ink);font-size:14px}
.compare-head .compare-cell{justify-content:flex-start;padding-top:26px;padding-bottom:22px}
.compare-head .compare-cell h3{font-size:19px}
.compare-head .compare-cell p{font-size:13px;color:var(--muted)}
.compare-cell.is-featured{background:var(--green-50)}
.compare-head .compare-cell.is-featured{border-top:2px solid var(--orange)}
.compare-row:last-child .compare-cell.is-featured{border-bottom:2px solid var(--orange)}
.plan-head{position:relative}
.price{font-size:34px;font-weight:700;color:var(--ink);line-height:1.1;font-variant-numeric:tabular-nums}
.price em{font-style:normal;font-size:16px;font-weight:600;margin-right:2px}
.price small{font-size:13px;font-weight:400;color:var(--muted);margin-left:4px}
.price-old{font-size:13px;color:var(--muted);text-decoration:line-through}
.plan-cta{display:flex;align-items:center;padding:20px}
.check{display:flex;align-items:center;gap:8px}
.check svg{width:18px;height:18px;fill:none;stroke:var(--success);stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
.compare-note{margin-top:16px;font-size:13px;color:var(--muted)}

/* 规则说明 */
.rules{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rule-group{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 24px;box-shadow:var(--sh-1);transition:box-shadow .2s var(--ease)}
.rule-group:hover{box-shadow:var(--sh-2)}
.rule-group h3{font-size:17px;margin-bottom:16px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.rule-group li{display:flex;gap:10px;font-size:14px;padding:8px 0}
.rule-group li span{color:var(--orange);font-weight:700;flex-shrink:0}

/* 推荐选择 */
.picker{display:flex;flex-direction:column;gap:14px}
.picker-row{display:grid;grid-template-columns:56px 1fr auto;gap:20px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:18px 22px;box-shadow:var(--sh-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.picker-row:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--green-300)}
.picker-index{width:44px;height:44px;border-radius:50%;background:var(--green-50);color:var(--green-900);font-weight:700;display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums}
.picker-text strong{display:block;font-size:16px;color:var(--ink);margin-bottom:2px}
.picker-text p{font-size:14px}
.picker-tag{font-size:12px;font-weight:600;color:var(--orange-dark);background:var(--orange-soft);border-radius:999px;padding:5px 12px;white-space:nowrap}

/* FAQ */
.faq{max-width:720px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);margin-bottom:12px;box-shadow:var(--sh-1);transition:box-shadow .2s var(--ease)}
.faq-item.is-open{box-shadow:0 0 0 0 transparent,inset 3px 0 0 var(--orange),var(--sh-2)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;padding:18px 20px;background:none;border:0;text-align:left;font-size:16px;font-weight:600;color:var(--ink);cursor:pointer}
.faq-icon{width:20px;height:20px;flex-shrink:0;fill:none;stroke:var(--green-900);stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;transition:transform .2s var(--ease)}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;padding:0 20px;font-size:15px;color:var(--text);transition:max-height .28s var(--ease),padding .28s var(--ease)}
.faq-item.is-open .faq-a{max-height:340px;padding:0 20px 20px}

/* 下一步 CTA */
.cta-strip{background:var(--green-900);color:#fff;border-radius:0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;padding:36px 0}
.cta-strip h3{color:#fff;font-size:22px;margin-bottom:6px}
.cta-strip p{color:rgba(255,255,255,.78);font-size:14px}
.cta-actions{display:flex;gap:12px;flex-shrink:0}

/* 页脚 */
.site-footer{background:var(--footer-bg);color:#A9C8BB;font-size:14px;border-top:1px solid rgba(255,255,255,.08)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;padding:56px 0 40px}
.site-footer .brand-text strong{color:#fff}
.site-footer .brand-text em{color:#8FB5A6}
.footer-brand p{margin-top:16px;line-height:1.8;max-width:34ch}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:16px}
.footer-col li{padding:5px 0}
.footer-col a{transition:color .16s var(--ease),border-color .16s var(--ease);border-bottom:2px solid transparent;padding-bottom:1px}
.footer-col a:hover{color:#fff;border-color:var(--orange)}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;gap:14px;padding:20px 0 28px;border-top:1px solid rgba(255,255,255,.08);font-size:13px;color:#88AA9C}
.footer-bottom .spacer{flex:1}
.to-top{display:inline-flex;align-items:center;gap:6px;color:#A9C8BB;transition:color .16s var(--ease)}
.to-top:hover{color:#fff}
.to-top svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}

/* 移动悬浮条 */
.mobile-bar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;height:56px;padding:6px 16px calc(6px + env(safe-area-inset-bottom));background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-top:1px solid var(--line);gap:10px}
.mobile-bar .btn{flex:1;height:44px}

@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:28px;padding:44px 0 48px}
  .hero-figure img{height:200px}
  .ladder{grid-template-columns:repeat(2,1fr);gap:20px;padding-top:24px}
  .ladder-step{transform:none!important}
  .rules{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:960px){
  .command-search,.btn-ghost{display:none}
  .nav-toggle{display:flex}
  .main-nav{position:fixed;top:64px;left:0;right:0;bottom:0;background:#fff;flex-direction:column;align-items:stretch;gap:2px;padding:18px 20px;margin:0;overflow-y:auto;display:none;z-index:75;border-top:1px solid var(--line)}
  .main-nav.is-open{display:flex}
  .main-nav a{padding:14px 12px;font-size:16px;border-radius:10px}
  .main-nav a.active::after{left:12px;right:auto;width:26px}
  .mobile-bar{display:flex}
  body{padding-bottom:76px}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:32px 0}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .section{padding:52px 0}
  .section-head{margin-bottom:28px}
  .ladder{grid-template-columns:1fr}
  .ladder{padding-top:8px}
  .picker-row{grid-template-columns:44px 1fr;gap:14px}
  .picker-tag{grid-column:2;justify-self:start}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding:40px 0 28px}
  .hero-figure img{height:180px}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions .btn{width:100%}
}
@media (max-width:520px){
  body{font-size:15px;line-height:1.8}
  .nav-inner{height:60px;gap:12px}
  .main-nav{top:60px}
  .page-hero h1{font-size:28px}
  .price{font-size:28px}
  .compare-cell{padding:14px 16px}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms!important;animation-duration:.01ms!important}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --green-900:#0B2A20;
  --green-800:#0F3D2E;
  --green-700:#14604A;
  --green-300:#7FBFA6;
  --green-50:#EAF4EF;
  --orange:#FF6A2B;
  --orange-deep:#E2541A;
  --orange-soft:#FFF0E8;
  --yellow:#FFC53D;
  --ink:#0B1512;
  --ink-2:#3D4945;
  --ink-3:#6B7873;
  --line:#E1E7E1;
  --page:#F5F8F4;
  --surface:#FFFFFF;
  --ok:#1F8A5B;
  --warn:#C9821B;
  --err:#C8402F;
  --info:#2E6FB7;
  --r-s:8px;--r-m:12px;--r-l:18px;--r-xl:24px;
  --sh-1:0 1px 2px rgba(11,21,18,.05);
  --sh-2:0 8px 24px -12px rgba(11,21,18,.18);
  --sh-3:0 24px 56px -24px rgba(11,21,18,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sp-1:8px;--sp-2:16px;--sp-3:24px;--sp-4:32px;--sp-5:48px;--sp-6:72px;--sp-7:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.85;color:var(--ink-2);
  background:var(--page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.3}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.mono{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(255,106,43,.35);border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:72px 0}
.section-tight{padding:56px 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head.center{margin:0 auto 40px;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--orange-soft);color:var(--orange-deep);
  font-size:12px;font-weight:600;letter-spacing:.2px;
  padding:5px 12px;border-radius:999px;margin-bottom:14px;
}
.h2{font-size:clamp(24px,2.8vw,34px);font-weight:700;letter-spacing:-.3px}
.h3{font-size:20px;font-weight:600}
.sub{color:var(--ink-3);font-size:15px;margin-top:12px}
.link-more{
  color:var(--green-800);font-weight:600;font-size:14px;
  border-bottom:2px solid var(--orange);padding-bottom:2px;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.link-more:hover{border-color:var(--orange-deep);color:var(--green-700)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:10px;
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:background .18s var(--ease),color .18s var(--ease),
             transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.btn svg{width:18px;height:18px;stroke:currentColor;stroke-width:1.75;fill:none}
.btn-primary{background:var(--green-800);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--green-700);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0)}
.btn-accent{background:var(--orange);color:#1A0E05;box-shadow:0 0 0 0 rgba(255,106,43,.28)}
.btn-accent:hover{background:#FF7F45;transform:translateY(-1px);box-shadow:0 0 0 6px rgba(255,106,43,.16)}
.btn-outline{background:transparent;border:1.5px solid var(--green-800);color:var(--green-800)}
.btn-outline:hover{background:var(--green-50)}
.btn-light{background:rgba(255,255,255,.12);color:#fff;border:1.5px solid rgba(255,255,255,.4)}
.btn-light:hover{background:rgba(255,255,255,.2)}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:10px}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none}

/* 顶栏 */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease);
}
.site-header.scrolled{box-shadow:var(--sh-2)}
.nav-inner{display:flex;align-items:center;gap:24px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:36px;height:36px;border-radius:10px;background:var(--green-800);
  display:grid;place-items:center;flex:none;
}
.brand-mark svg{width:20px;height:20px;stroke:var(--green-300);stroke-width:1.75;fill:none;stroke-linecap:round;stroke-linejoin:round}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;color:var(--ink);letter-spacing:-.2px}
.brand-text em{font-style:normal;font-size:11px;color:var(--ink-3);letter-spacing:.4px}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px}
.main-nav a{
  position:relative;padding:8px 12px;font-size:14.5px;color:var(--ink-2);border-radius:8px;
  transition:color .18s var(--ease),background .18s var(--ease);
}
.main-nav a:hover{color:var(--green-800);background:var(--green-50)}
.main-nav a.active{color:var(--green-800);font-weight:600}
.main-nav a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--orange);border-radius:2px;
}
.nav-tools{display:flex;align-items:center;gap:10px;margin-left:auto}

/* 命令式搜索 */
.command-search{position:relative;width:288px}
.command-search>svg{
  position:absolute;left:12px;top:50%;transform:translateY(-50%);
  width:18px;height:18px;stroke:var(--ink-3);stroke-width:1.75;fill:none;
}
.command-search input{
  width:100%;height:40px;border-radius:10px;border:1px solid var(--line);
  background:#fff;padding:0 62px 0 38px;font-size:14px;color:var(--ink);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.command-search input::placeholder{color:#9AA5A0}
.command-search input:focus{border-color:var(--green-700);box-shadow:0 0 0 3px rgba(255,106,43,.28)}
.command-search kbd{
  position:absolute;right:10px;top:50%;transform:translateY(-50%);
  font-family:inherit;font-size:11px;color:var(--ink-3);
  border:1px solid var(--line);background:var(--page);
  padding:2px 7px;border-radius:6px;
}
.search-panel{
  position:absolute;top:calc(100% + 10px);left:0;right:0;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-m);
  box-shadow:var(--sh-3);padding:16px;display:none;
}
.command-search:focus-within .search-panel{display:block}
.panel-title{font-size:11px;font-weight:600;color:var(--ink-3);letter-spacing:.6px;margin-bottom:8px}
.panel-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.panel-chips a{
  font-size:12px;padding:5px 10px;border-radius:999px;
  background:var(--green-50);color:var(--green-800);font-weight:600;
}
.panel-chips a:hover{background:#DCEBE3}
.panel-list li{font-size:13px;color:var(--ink-2);padding:7px 0;border-top:1px dashed var(--line)}
.panel-list li:first-child{border-top:0}
.btn-ghost{
  display:inline-flex;align-items:center;gap:6px;height:40px;padding:0 12px;
  border-radius:10px;font-size:14px;font-weight:600;color:var(--green-800);
  transition:background .18s var(--ease);
}
.btn-ghost:hover{background:var(--green-50)}
.btn-ghost svg{width:18px;height:18px;stroke:currentColor;stroke-width:1.75;fill:none}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;place-items:center;
  border:1px solid var(--line);background:#fff;
}
.nav-toggle svg{width:22px;height:22px;stroke:var(--ink);stroke-width:1.75;fill:none;stroke-linecap:round}

/* 页面头 */
.page-head{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#EAF4EF 0%,#F5F8F4 100%);
  border-bottom:1px solid var(--line);
}
.page-head::after{
  content:"";position:absolute;right:-80px;top:-60px;width:520px;height:420px;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='520' height='420' viewBox='0 0 520 420'><g fill='none' stroke='%230F3D2E' stroke-width='2'><path d='M-20 360 Q180 250 540 60'/><path d='M-20 400 Q200 290 540 100'/><path d='M-20 440 Q220 330 540 140'/></g></svg>");
  background-repeat:no-repeat;background-size:contain;opacity:.07;pointer-events:none;
}
.page-head-inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.35fr .9fr;gap:40px;align-items:center;
  min-height:250px;padding-top:36px;padding-bottom:36px;
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--ink-3);margin-bottom:16px}
.breadcrumb a{color:var(--ink-3)}
.breadcrumb a:hover{color:var(--green-800);text-decoration:underline}
.breadcrumb .sep{color:#B6C0BA}
.breadcrumb .current{color:var(--ink-3)}
.page-head h1{
  font-size:clamp(30px,4.4vw,52px);line-height:1.15;font-weight:700;letter-spacing:-.5px;
  color:var(--green-900);
}
.page-head .lead{margin-top:14px;font-size:16px;color:var(--ink-2);max-width:52ch}
.page-head-stats{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.tag{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;
  padding:5px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--ink-2);
}
.tag.orange{background:var(--orange-soft);border-color:#FFD9C6;color:var(--orange-deep)}
.page-head-media{position:relative;border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--sh-3)}
.page-head-media img{width:100%;height:240px;object-fit:cover}
.page-head-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(15,61,46,.08),rgba(15,61,46,.34));
}
.page-head-media .float-card{
  position:absolute;left:16px;bottom:16px;z-index:2;
  background:rgba(255,255,255,.94);border-radius:var(--r-m);padding:12px 14px;
  box-shadow:var(--sh-2);display:flex;align-items:center;gap:12px;
}
.page-head-media .float-card b{font-size:20px;font-variant-numeric:tabular-nums;color:var(--green-800)}
.page-head-media .float-card span{font-size:12px;color:var(--ink-3);line-height:1.4}

/* 安全提示卡 */
.safety-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.safety-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.safety-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#CFE0D6}
.safety-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:var(--orange-soft);margin-bottom:16px;
}
.safety-icon svg{width:22px;height:22px;stroke:var(--orange-deep);stroke-width:1.75;fill:none;stroke-linecap:round;stroke-linejoin:round}
.safety-icon.green{background:var(--green-50)}
.safety-icon.green svg{stroke:var(--green-700)}
.safety-card h3{font-size:17px;font-weight:600;margin-bottom:8px}
.safety-card p{font-size:14.5px;color:var(--ink-2)}

/* FAQ 分组 */
.faq-group{margin-bottom:56px}
.faq-group:last-child{margin-bottom:0}
.faq-group-head{
  display:flex;align-items:flex-start;gap:16px;
  padding-bottom:16px;margin-bottom:20px;border-bottom:1px solid var(--line);
}
.faq-num{
  flex:none;width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:var(--green-800);color:#fff;font-size:15px;font-weight:600;
}
.faq-group-head p{font-size:14px;color:var(--ink-3);margin-top:6px}
.accordion{max-width:860px}
.acc-item{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-m);
  margin-bottom:10px;overflow:hidden;
  transition:box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.acc-item:hover{border-color:#CFE0D6}
.acc-item.open{box-shadow:var(--sh-2);border-color:#CFE0D6}
.acc-trigger{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 18px;text-align:left;font-size:16px;font-weight:600;color:var(--ink);
  position:relative;transition:color .18s var(--ease);
}
.acc-trigger span{padding-right:8px}
.acc-trigger svg{
  flex:none;width:20px;height:20px;stroke:var(--green-700);stroke-width:1.75;fill:none;
  stroke-linecap:round;stroke-linejoin:round;transition:transform .2s var(--ease);
}
.acc-item.open .acc-trigger{color:var(--green-800)}
.acc-item.open .acc-trigger::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  background:var(--orange);border-radius:0 3px 3px 0;
}
.acc-item.open .acc-trigger svg{transform:rotate(180deg)}
.acc-panel{max-height:0;overflow:hidden;transition:max-height .28s var(--ease)}
.acc-body{padding:0 18px 18px;font-size:15px;color:var(--ink-2)}
.acc-body p+p{margin-top:10px}
.acc-body strong{color:var(--green-800)}
.acc-body .mini-list{margin-top:10px;display:grid;gap:6px}
.acc-body .mini-list li{
  position:relative;padding-left:16px;font-size:14.5px;color:var(--ink-2);
}
.acc-body .mini-list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--orange);
}

/* 状态提示条 */
.notice{
  display:flex;align-items:flex-start;gap:12px;
  background:var(--green-50);border:1px solid #CFE0D6;border-left:3px solid var(--green-700);
  border-radius:var(--r-m);padding:16px 18px;font-size:14.5px;color:var(--green-900);
}
.notice svg{flex:none;width:20px;height:20px;stroke:var(--green-700);stroke-width:1.75;fill:none;margin-top:2px}

/* CTA 条 */
.cta-wrap{padding:0 0 88px}
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  background:var(--green-800);border-radius:var(--r-xl);
  padding:32px 36px;color:#fff;box-shadow:var(--sh-3);
}
.cta-bar h2{color:#fff;font-size:clamp(20px,2.2vw,26px);font-weight:700}
.cta-bar p{color:rgba(255,255,255,.82);font-size:14.5px;margin-top:8px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* 页脚 */
.site-footer{background:var(--green-900);color:#A9C8BA;border-top:1px solid rgba(255,255,255,.08)}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
  padding:64px 0 40px;
}
.site-footer .brand-text strong{color:#fff}
.site-footer .brand-text em{color:rgba(255,255,255,.55)}
.site-footer .footer-brand p{margin-top:16px;font-size:14px;line-height:1.9;max-width:34ch}
.footer-col h4{color:#fff;font-size:14.5px;font-weight:600;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col li{font-size:14px;color:#A9C8BA}
.footer-col a{position:relative;transition:color .18s var(--ease)}
.footer-col a:hover{color:#fff;box-shadow:inset 0 -2px 0 var(--orange)}
.footer-bottom{
  display:flex;align-items:center;gap:18px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.08);
  padding:20px 0 28px;font-size:12.5px;color:rgba(255,255,255,.6);
}
.footer-bottom .spacer{flex:1}
.to-top{
  display:inline-flex;align-items:center;gap:6px;color:#fff;font-size:12.5px;font-weight:600;
  padding:8px 12px;border-radius:999px;border:1px solid rgba(255,255,255,.24);
  transition:background .18s var(--ease);
}
.to-top:hover{background:rgba(255,255,255,.12)}
.to-top svg{width:14px;height:14px;stroke:currentColor;stroke-width:1.75;fill:none}

/* 移动端悬浮条 */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:80;display:none;gap:10px;
  padding:10px 14px calc(10px + env(safe-area-inset-bottom));
  background:rgba(255,255,255,.96);backdrop-filter:blur(12px);
  border-top:1px solid var(--line);box-shadow:0 -8px 24px -16px rgba(11,21,18,.35);
}
.mobile-bar .btn{flex:1}

/* 响应式 */
@media (max-width:1200px){
  .command-search{width:240px}
}
@media (max-width:1024px){
  .container{padding:0 20px}
  .section{padding:60px 0}
  .page-head-inner{grid-template-columns:1fr;gap:28px;padding-top:28px;padding-bottom:36px}
  .page-head-media img{height:200px}
  .safety-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:960px){
  .nav-toggle{display:grid}
  .btn-ghost,.command-search{display:none}
  .main-nav{
    position:fixed;left:0;right:0;top:64px;bottom:0;
    flex-direction:column;align-items:stretch;gap:6px;
    background:#fff;padding:20px 20px 40px;margin:0;overflow-y:auto;
    opacity:0;transform:translateY(-8px);pointer-events:none;
    transition:opacity .2s var(--ease),transform .2s var(--ease);
    z-index:60;border-top:1px solid var(--line);
  }
  body.nav-open .main-nav{opacity:1;transform:none;pointer-events:auto}
  .main-nav a{padding:14px 12px;font-size:16px;border-radius:var(--r-m)}
  .main-nav a.active::after{left:12px;right:auto;width:28px;bottom:8px}
}
@media (max-width:768px){
  body{font-size:15px;line-height:1.8}
  .section{padding:48px 0}
  .section-tight{padding:40px 0}
  .cta-wrap{padding-bottom:64px}
  .safety-grid{grid-template-columns:1fr}
  .accordion{max-width:none}
  .cta-bar{padding:24px 20px;border-radius:var(--r-l)}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:48px 0 28px}
  .footer-bottom{padding-bottom:96px}
  .mobile-bar{display:flex}
  .page-head-media img{height:170px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .page-head h1{font-size:clamp(26px,7vw,34px)}
  .acc-trigger{font-size:15px;padding:14px 14px}
  .acc-body{padding:0 14px 16px}
  .to-top{width:100%;justify-content:center}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category4 */
:root{
  --g-900:#0F3D2E;
  --g-700:#14604A;
  --g-300:#7FBFA6;
  --g-50:#EAF4EF;
  --o-500:#FF6A2B;
  --o-600:#E2541A;
  --o-50:#FFF0E8;
  --o-700:#FF7F45;
  --yellow:#FFC53D;
  --ink:#0B1512;
  --text:#3D4945;
  --muted:#6B7873;
  --line:#E1E7E1;
  --bg:#F5F8F4;
  --card:#FFFFFF;
  --foot:#0B2A20;
  --ok:#1F8A5B;
  --warn:#C9821B;
  --err:#C8402F;
  --info:#2E6FB7;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-xl:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(11,21,18,.05);
  --sh-2:0 8px 24px -12px rgba(11,21,18,.18);
  --sh-3:0 24px 56px -24px rgba(11,21,18,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.1px;
}
img{max-width:100%;display:block;border:0}
a{color:var(--g-700);text-decoration:none;transition:color .18s var(--ease),border-color .18s var(--ease)}
a:hover{color:var(--g-900)}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.2px}
h1{font-size:clamp(30px,4.4vw,52px);line-height:1.15;letter-spacing:-.5px}
h2{font-size:clamp(24px,2.8vw,34px);line-height:1.25}
h3{font-size:20px;line-height:1.35;font-weight:600}
h4{font-size:17px;line-height:1.4;font-weight:600}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.mono{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";letter-spacing:.4px}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-tight{padding:56px 0}
.section-head{margin-bottom:36px;max-width:720px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head p{margin-top:12px;font-size:16px;color:var(--muted)}
.eyebrow-line{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.eyebrow-line::before{content:"";width:28px;height:3px;border-radius:2px;background:var(--o-500)}
.eyebrow{font-size:12px;font-weight:600;letter-spacing:1.6px;color:var(--g-700)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:none;box-shadow:0 0 0 3px rgba(255,106,43,.35);border-radius:10px;
}

/* ---------- announce ---------- */
.announce{background:var(--g-900);color:#EAF4EF;font-size:13px}
.announce-inner{min-height:36px;display:flex;align-items:center;gap:12px}
.announce-text{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#D7E9E0}
.announce-close{
  width:28px;height:28px;border-radius:8px;border:1px solid rgba(255,255,255,.22);
  background:transparent;color:#D7E9E0;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease);
}
.announce-close:hover{background:rgba(255,255,255,.12);color:#fff}
.announce-close svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round}

/* ---------- badges ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;height:22px;padding:0 10px;border-radius:var(--r-pill);font-size:12px;font-weight:600;line-height:1}
.badge-orange{background:var(--o-50);color:var(--o-600)}
.badge-green{background:var(--g-50);color:var(--g-700)}
.badge-gray{background:#EEF1EE;color:var(--muted)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.92);
  border-bottom:1px solid var(--line);backdrop-filter:blur(12px);transition:box-shadow .2s var(--ease);
}
.site-header.is-stuck{box-shadow:var(--sh-2)}
.nav-inner{min-height:64px;display:flex;align-items:center;gap:20px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink)}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--g-900);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-mark svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linejoin:round}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:-.2px}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.6px}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:12px}
.main-nav a{
  position:relative;padding:10px 12px;font-size:14.5px;color:var(--text);border-radius:8px;font-weight:500;
}
.main-nav a:hover{color:var(--g-900);background:var(--g-50)}
.main-nav a.active{color:var(--g-900);font-weight:600}
.main-nav a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;border-radius:2px;background:var(--o-500);
}
.nav-tools{margin-left:auto;display:flex;align-items:center;gap:10px}
.command-search{
  position:relative;display:flex;align-items:center;gap:8px;width:280px;height:40px;padding:0 10px;
  background:#fff;border:1px solid var(--line);border-radius:10px;transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.command-search:focus-within{border-color:var(--g-300);box-shadow:var(--sh-1)}
.command-search>svg{width:18px;height:18px;flex:0 0 auto;fill:none;stroke:var(--muted);stroke-width:1.75;stroke-linecap:round}
.command-search input{
  flex:1;min-width:0;border:0;background:transparent;font-size:13.5px;outline:none;color:var(--ink);
}
.command-search input::placeholder{color:#9AA6A1}
.command-search kbd{
  font-family:inherit;font-size:11px;color:var(--muted);background:var(--bg);border:1px solid var(--line);
  border-radius:6px;padding:2px 6px;white-space:nowrap;
}
.search-panel{
  position:absolute;top:calc(100% + 10px);left:0;width:340px;background:#fff;border:1px solid var(--line);
  border-radius:12px;box-shadow:var(--sh-3);padding:14px;opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .18s var(--ease),transform .18s var(--ease),visibility .18s;
}
.command-search:focus-within .search-panel{opacity:1;visibility:visible;transform:translateY(0)}
.panel-title{font-size:11px;font-weight:600;color:var(--muted);letter-spacing:1px;margin-bottom:8px}
.panel-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.panel-chips a{font-size:12.5px;padding:5px 10px;border-radius:var(--r-pill);background:var(--g-50);color:var(--g-700)}
.panel-chips a:hover{background:var(--g-300);color:var(--g-900)}
.panel-list li{font-size:13px;color:var(--text);padding:6px 0;border-bottom:1px dashed var(--line)}
.panel-list li:last-child{border-bottom:0}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;
  border-radius:10px;border:1.5px solid transparent;font-size:15px;font-weight:600;cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.btn-primary{background:var(--g-900);color:#fff}
.btn-primary:hover{background:var(--g-700);color:#fff;transform:translateY(-1px)}
.btn-accent{background:var(--o-500);color:#1A0E05}
.btn-accent:hover{background:var(--o-700);color:#1A0E05;transform:translateY(-1px)}
.btn-outline{background:transparent;border-color:var(--g-900);color:var(--g-900)}
.btn-outline:hover{background:var(--g-50);color:var(--g-900)}
.btn-ghost{background:transparent;border-color:transparent;color:var(--text);height:40px;padding:0 14px;font-size:14.5px}
.btn-ghost:hover{background:var(--g-50);color:var(--g-900)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn:disabled{opacity:.5;cursor:not-allowed}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--g-700);
  border-bottom:2px solid var(--o-500);padding-bottom:2px;
}
.link-more:hover{color:var(--g-900);border-bottom-color:var(--o-600)}
.link-more svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s var(--ease)}
.link-more:hover svg{transform:translateX(3px)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);background:#fff;
  color:var(--ink);align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;background:var(--g-50);border-bottom:1px solid #DCEAE1;padding:44px 0 48px;
}
.page-hero::after{
  content:"";position:absolute;right:-60px;top:-80px;width:520px;height:420px;pointer-events:none;
  background:repeating-linear-gradient(115deg,rgba(15,61,46,.08) 0 2px,transparent 2px 26px);
  opacity:.55;
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.55fr 1fr;gap:40px;align-items:center}
.crumb{font-size:13px;color:var(--muted);display:flex;align-items:center;gap:8px;margin-bottom:18px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--g-700)}
.crumb .current{color:#93A19B}
.page-hero h1{margin-bottom:14px}
.page-hero .lead{font-size:16px;color:var(--text);max-width:600px}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.hero-tags span{
  font-size:12.5px;font-weight:600;color:var(--g-700);background:#fff;border:1px solid #CEE3D7;
  border-radius:var(--r-pill);padding:5px 12px;
}
.hero-figure{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-2)}
.hero-figure img{width:100%;height:210px;object-fit:cover}
.hero-figure::after{
  content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(15,61,46,.06),rgba(15,61,46,.28));
}
.hero-float{
  position:absolute;left:14px;bottom:14px;background:#fff;border-radius:12px;padding:10px 14px;
  box-shadow:var(--sh-2);display:flex;align-items:center;gap:10px;
}
.hero-float b{font-size:18px;color:var(--g-900);font-variant-numeric:tabular-nums}
.hero-float span{font-size:12px;color:var(--muted)}

/* ---------- doc cards (竖版) ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.doc-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  display:flex;flex-direction:column;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.doc-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D3E2D8}
.doc-media{position:relative;overflow:hidden;background:var(--g-50)}
.doc-media img{width:100%;height:176px;object-fit:cover;transition:transform .5s var(--ease)}
.doc-card:hover .doc-media img{transform:scale(1.04)}
.doc-media .tag{
  position:absolute;left:12px;top:12px;font-size:12px;font-weight:600;padding:4px 10px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.92);color:var(--g-700);
}
.doc-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.doc-title{font-size:17px;font-weight:600;line-height:1.45;color:var(--ink)}
.doc-card:hover .doc-title{color:var(--g-700)}
.doc-text{font-size:14px;color:var(--muted);line-height:1.75}
.doc-meta{
  margin-top:auto;padding-top:14px;border-top:1px dashed var(--line);display:flex;align-items:center;
  justify-content:space-between;font-size:12.5px;color:var(--muted);font-variant-numeric:tabular-nums;
}

/* ---------- scene rows ---------- */
.scene-list{border-top:1px solid var(--line)}
.scene-row{
  display:grid;grid-template-columns:56px 1fr 200px 28px;gap:20px;align-items:center;
  padding:22px 8px;border-bottom:1px solid var(--line);transition:background .18s var(--ease);
}
.scene-row:hover{background:#fff}
.scene-num{
  width:44px;height:44px;border-radius:14px;background:var(--g-50);color:var(--g-900);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-variant-numeric:tabular-nums;
}
.scene-row:hover .scene-num{background:var(--g-900);color:#fff}
.scene-main h3{font-size:17px;margin-bottom:4px}
.scene-main p{font-size:14px;color:var(--muted)}
.scene-side{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;text-align:right}
.scene-arrow{color:var(--g-300);display:flex;justify-content:flex-end}
.scene-arrow svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s var(--ease),color .18s var(--ease)}
.scene-row:hover .scene-arrow svg{transform:translateX(4px);color:var(--o-500)}

/* ---------- dark band ---------- */
.dark-band{
  background:var(--g-900);color:#D7E9E0;border-radius:var(--r-xl);padding:48px;position:relative;overflow:hidden;
}
.dark-band::after{
  content:"";position:absolute;right:-40px;bottom:-70px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,rgba(255,106,43,.28),transparent 68%);
}
.dark-band h2{color:#fff;margin-bottom:12px}
.dark-band .dark-lead{color:#B9D4C8;font-size:15px;max-width:640px}
.channel-grid{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:34px}
.channel{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);border-radius:var(--r-md);
  padding:22px 20px;display:flex;flex-direction:column;gap:10px;
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.channel:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}
.channel-icon{
  width:40px;height:40px;border-radius:12px;background:rgba(255,106,43,.18);color:var(--yellow);
  display:flex;align-items:center;justify-content:center;
}
.channel-icon svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.channel h3{color:#fff;font-size:17px}
.channel p{font-size:13.5px;color:#A9C7B9;line-height:1.75}
.channel a{color:var(--yellow);font-size:13.5px;font-weight:600}
.channel a:hover{color:#fff}

/* ---------- timeline ---------- */
.timeline{border-left:2px solid var(--line);padding-left:0;margin-left:6px}
.tl-item{position:relative;padding:0 0 28px 28px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-8px;top:8px;width:14px;height:14px;border-radius:50%;
  background:#fff;border:3px solid var(--g-300);
}
.tl-item:first-child::before{border-color:var(--o-500)}
.tl-date{font-size:13px;font-weight:600;color:var(--g-700);font-variant-numeric:tabular-nums;letter-spacing:.6px}
.tl-body{margin-top:6px}
.tl-body h3{font-size:16.5px;font-weight:600;margin-bottom:4px}
.tl-body p{font-size:14px;color:var(--muted)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}

/* ---------- cta strip ---------- */
.cta-strip{
  background:linear-gradient(120deg,var(--g-900),#144C3A);border-radius:var(--r-lg);padding:30px 32px;
  display:flex;align-items:center;gap:24px;flex-wrap:wrap;
}
.cta-strip h3{color:#fff;font-size:20px;margin-bottom:4px}
.cta-strip p{color:#B9D4C8;font-size:14px}
.cta-actions{margin-left:auto;display:flex;gap:12px;flex-wrap:wrap}
.cta-strip .btn-outline{border-color:rgba(255,255,255,.45);color:#fff}
.cta-strip .btn-outline:hover{background:rgba(255,255,255,.14);color:#fff}

/* ---------- footer ---------- */
.site-footer{background:var(--foot);color:#B9D4C8;margin-top:72px;padding-top:56px;border-top:1px solid rgba(255,255,255,.08)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px}
.footer-brand .brand{color:#fff;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.1)}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text em{color:#8FB4A4}
.footer-brand p{font-size:13.5px;color:#9CBBAE;max-width:340px;line-height:1.8}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-col ul li{font-size:13.5px;padding:6px 0;color:#9CBBAE}
.footer-col ul li a{color:#B9D4C8;padding-bottom:2px;border-bottom:2px solid transparent}
.footer-col ul li a:hover{color:#fff;border-bottom-color:var(--o-500)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:20px 0 26px;display:flex;align-items:center;
  gap:18px;flex-wrap:wrap;font-size:12.5px;color:#88A79A;
}
.footer-bottom .spacer{flex:1}
.to-top{display:inline-flex;align-items:center;gap:8px;color:#B9D4C8;font-size:13px}
.to-top:hover{color:#fff}
.to-top svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}

/* ---------- mobile bar ---------- */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;background:rgba(255,255,255,.95);
  border-top:1px solid var(--line);padding:8px 16px calc(8px + env(safe-area-inset-bottom));
  gap:10px;backdrop-filter:blur(12px);box-shadow:0 -8px 24px -18px rgba(11,21,18,.4);
}
.mobile-bar .btn{flex:1;height:44px;padding:0 12px;font-size:14.5px}

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

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .command-search{width:230px}
  .scene-row{grid-template-columns:52px 1fr 160px 24px}
}
@media (max-width:1024px){
  .section{padding:64px 0}
  .hero-grid{grid-template-columns:1fr;gap:28px}
  .hero-figure img{height:230px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .channel-grid{grid-template-columns:1fr 1fr}
  .split{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:960px){
  .main-nav{
    position:fixed;top:0;right:0;height:100vh;width:min(330px,86vw);background:#fff;margin:0;
    flex-direction:column;align-items:stretch;gap:6px;padding:84px 20px 32px;
    box-shadow:var(--sh-3);transform:translateX(105%);transition:transform .26s var(--ease);z-index:80;
  }
  body.nav-open .main-nav{transform:translateX(0)}
  .main-nav a{padding:14px 12px;font-size:16px;border-radius:10px}
  .main-nav a.active::after{left:12px;right:auto;width:26px;bottom:8px}
  .nav-toggle{display:inline-flex}
  .command-search{display:none}
  .btn-ghost{display:none}
  .nav-inner{gap:12px}
  .mobile-bar{display:flex}
  body{padding-bottom:76px}
  .site-footer{margin-top:56px}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .section{padding:52px 0}
  .page-hero{padding:32px 0 36px}
  .card-grid{grid-template-columns:1fr}
  .channel-grid{grid-template-columns:1fr}
  .dark-band{padding:32px 22px;border-radius:var(--r-lg)}
  .scene-row{grid-template-columns:44px 1fr 20px;gap:14px;padding:18px 4px}
  .scene-side{display:none}
  .cta-strip{padding:24px 20px}
  .cta-actions{margin-left:0;width:100%}
  .cta-actions .btn{flex:1}
  .footer-grid{grid-template-columns:1fr;gap:24px;padding-bottom:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .footer-bottom .spacer{display:none}
  body{font-size:15px;line-height:1.8}
  .brand-text strong{font-size:16px}
}
@media (max-width:520px){
  .hero-figure img{height:180px}
  .doc-media img{height:160px}
  .announce-text{font-size:12px}
  .btn{height:44px;padding:0 16px;font-size:14.5px}
}