/* roulang page: index */
:root{
  --ink-900:#080B0A;--ink-800:#0E1311;--ink-700:#171D1A;
  --line-d:rgba(255,255,255,.08);
  --paper:#F7F7F4;--paper-2:#ECEDE9;--card:#FFFFFF;
  --line-l:rgba(9,14,12,.10);
  --accent:#17E6A1;--accent-h:#3DF5B4;--accent-p:#0FB77E;
  --accent-2:#CFFA4B;--hot:#FF6B4A;
  --t-d:#F1F5F3;--t-dm:#98A5A0;
  --t-l:#0C1210;--t-lm:#5D6A65;
  --r-sm:8px;--r-md:12px;--r-lg:18px;--r-pill:999px;
  --font-cn:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:"Space Grotesk","Inter",system-ui,-apple-system,sans-serif;
  --sh-card:0 1px 2px rgba(9,14,12,.04),0 12px 32px -12px rgba(9,14,12,.14);
  --sh-lift:0 2px 6px rgba(9,14,12,.05),0 22px 44px -18px rgba(9,14,12,.22);
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;font-family:var(--font-cn);font-size:16px;line-height:1.85;color:var(--t-l);background:var(--paper);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-.015em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.mono{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.01em}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 24px}
@media (min-width:1500px){.container{max-width:1360px}}
.section{padding:104px 0}
.section--tight{padding:72px 0}
.section--paper2{background:var(--paper-2)}
.section--dark{background:var(--ink-900);color:var(--t-d)}
.section--dark .sub{color:var(--t-dm)}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:28px;flex-wrap:wrap;margin-bottom:52px}
.section-head h2{font-size:clamp(26px,3.2vw,40px);line-height:1.2;font-weight:700}
.section-head .sub{margin-top:12px;font-size:15px;color:var(--t-lm);max-width:640px}
.eyebrow{display:inline-block;font-size:12px;letter-spacing:.12em;font-weight:600;color:var(--accent-p);margin-bottom:14px}
.section--dark .eyebrow{color:var(--accent)}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--accent-p);transition:color 200ms var(--ease),gap 200ms var(--ease)}
.link-more:hover{color:var(--accent);gap:10px}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 28px;border-radius:var(--r-md);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;white-space:nowrap;transition:background-color 240ms var(--ease),color 240ms var(--ease),border-color 240ms var(--ease),transform 240ms var(--ease),box-shadow 240ms var(--ease)}
.btn-lg{height:52px;padding:0 32px}
.btn-sm{height:40px;padding:0 20px;font-size:14px;border-radius:var(--r-pill)}
.btn-block{width:100%}
.btn-primary{background:var(--accent);color:#06120D}
.btn-primary:hover{background:var(--accent-h);transform:translateY(-1px);box-shadow:0 0 0 4px rgba(23,230,161,.14)}
.btn-primary:active{background:var(--accent-p);transform:translateY(1px);box-shadow:none}
.btn-ghost{border-color:rgba(255,255,255,.18);color:var(--t-d);background:transparent}
.btn-ghost:hover{border-color:var(--accent);background:rgba(23,230,161,.08);color:#fff;transform:translateY(-1px)}
.btn-outline-light{border-color:var(--line-l);color:var(--t-l);background:#fff}
.btn-outline-light:hover{border-color:var(--accent);background:rgba(23,230,161,.07);transform:translateY(-1px)}
.btn-hot{background:var(--hot);color:#200A04}
.btn-hot:hover{background:#FF8265;transform:translateY(-1px);box-shadow:0 0 0 4px rgba(255,107,74,.18)}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 顶栏 ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:60;height:72px;background:#0A0D0C;transition:height 240ms var(--ease),background-color 240ms var(--ease)}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:linear-gradient(90deg,transparent,rgba(23,230,161,.5),transparent)}
.site-header.is-stuck{height:60px;background-color:rgba(8,11,10,.78);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:100%}
.brand{display:flex;align-items:center;gap:11px;color:var(--t-d);flex-shrink:0}
.brand-mark{width:34px;height:34px;display:grid;place-items:center;border-radius:10px;background:linear-gradient(140deg,var(--accent),#0B8F66);box-shadow:0 0 18px rgba(23,230,161,.35)}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-text strong{font-family:var(--font-num);font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--t-d)}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.2em;color:var(--t-dm)}
.nav-main{display:flex;align-items:center;gap:4px}
.nav-link{position:relative;padding:10px 15px;font-size:15px;color:#C6D0CC;border-radius:var(--r-sm);transition:color 220ms var(--ease)}
.nav-link:hover{color:var(--accent-h)}
.nav-link.is-active{color:var(--accent);text-shadow:0 0 12px rgba(23,230,161,.45)}
.nav-link.is-active::after{content:"";position:absolute;left:15px;right:15px;bottom:2px;height:2px;border-radius:2px;background:var(--accent);box-shadow:0 0 10px rgba(23,230,161,.8)}
.nav-actions{display:flex;align-items:center;gap:14px}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line-d);border-radius:10px;background:transparent;cursor:pointer;padding:0;place-items:center}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--t-d);border-radius:2px;margin:3px auto;transition:transform 240ms var(--ease),opacity 200ms var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.drawer{position:fixed;top:0;right:0;bottom:0;z-index:80;width:80vw;max-width:380px;background:var(--ink-800);border-left:1px solid var(--line-d);padding:26px 22px;display:flex;flex-direction:column;gap:6px;transform:translateX(105%);transition:transform 320ms var(--ease);overflow-y:auto}
.drawer.is-open{transform:none}
.drawer-title{font-size:12px;letter-spacing:.16em;color:var(--t-dm);margin:6px 0 12px}
.drawer a.drawer-link{display:flex;align-items:center;justify-content:space-between;padding:14px 14px;border-radius:var(--r-md);font-size:15px;color:#C6D0CC;border:1px solid transparent;transition:all 200ms var(--ease)}
.drawer a.drawer-link:hover,.drawer a.drawer-link.is-active{color:var(--accent);border-color:rgba(23,230,161,.3);background:rgba(23,230,161,.06)}
.drawer-foot{margin-top:auto;padding-top:22px;border-top:1px solid var(--line-d);display:flex;flex-direction:column;gap:12px}
.drawer-foot p{font-size:13px;color:var(--t-dm);line-height:1.7}
.drawer-mask{position:fixed;inset:0;z-index:70;background:rgba(4,6,5,.72);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);opacity:0;visibility:hidden;transition:opacity 280ms var(--ease),visibility 280ms var(--ease)}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--ink-900);color:var(--t-d);padding:140px 0 68px;min-height:620px;display:flex;align-items:center}
.hero-bg{position:absolute;inset:0;background-image:url(/assets/images/backpic/back-1.png);background-size:cover;background-position:center;}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(8,11,10,.94) 0%,rgba(8,11,10,.78) 48%,rgba(8,11,10,.55) 100%)}
.hero-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:24px 24px;pointer-events:none}
.hero-glow{position:absolute;width:480px;height:480px;border-radius:50%;background:radial-gradient(circle,rgba(23,230,161,.18),transparent 68%);filter:blur(120px);pointer-events:none}
.hero-glow--a{top:-160px;right:6%}
.hero-glow--b{bottom:-220px;left:-80px;opacity:.7}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:repeat(12,1fr);gap:36px;align-items:center;width:100%}
.hero-copy{grid-column:span 8}
.hero-tag{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:var(--r-pill);border:1px solid rgba(23,230,161,.35);background:rgba(23,230,161,.08);color:var(--accent);font-size:12.5px;letter-spacing:.08em;margin-bottom:22px}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent);display:block}
.hero-title{font-size:clamp(34px,5.2vw,64px);line-height:1.08;font-weight:800;letter-spacing:-.02em}
.hero-title .hero-line{display:block;animation:lineIn 520ms var(--ease) both}
.hero-title .hero-line:nth-child(1){animation-delay:.04s}
.hero-title .hero-line:nth-child(2){animation-delay:.12s}
.hero-title em{font-style:normal;color:var(--accent)}
.hero-neon{height:1px;width:min(420px,70%);margin:26px 0 22px;background:linear-gradient(90deg,var(--accent),rgba(23,230,161,0));transform-origin:left;animation:draw 1.2s var(--ease) .3s both}
.hero-sub{font-size:17px;line-height:1.8;color:#C9D4D0;max-width:620px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-trust{display:flex;flex-wrap:wrap;gap:26px;margin-top:38px;padding-top:26px;border-top:1px solid var(--line-d)}
.hero-trust div{padding-right:26px;border-right:1px solid var(--line-d)}
.hero-trust div:last-child{border-right:0;padding-right:0}
.hero-trust strong{display:block;font-family:var(--font-num);font-size:24px;font-weight:700;color:var(--t-d);line-height:1.2}
.hero-trust span{font-size:13px;color:var(--t-dm)}
.hero-card{grid-column:span 4;background:var(--ink-800);border:1px solid var(--line-d);border-radius:var(--r-lg);padding:26px 24px;position:relative;overflow:hidden;box-shadow:inset 0 1px 0 rgba(255,255,255,.06),0 0 24px rgba(23,230,161,.14);animation:slideIn 600ms var(--ease) .2s both}
.hero-card::before{content:"";position:absolute;top:0;left:0;width:140px;height:2px;background:linear-gradient(90deg,var(--accent),transparent)}
.hero-card::after{content:"";position:absolute;right:-60px;bottom:-60px;width:180px;height:180px;border-radius:50%;background:radial-gradient(circle,rgba(23,230,161,.16),transparent 70%);filter:blur(30px)}
.hero-card h2{font-size:15px;letter-spacing:.1em;color:var(--t-dm);font-weight:600;margin-bottom:20px}
.step-list{display:flex;flex-direction:column;gap:16px;position:relative;z-index:1}
.step-list li{display:grid;grid-template-columns:34px 1fr;gap:12px;align-items:start;padding-bottom:16px;border-bottom:1px dashed rgba(255,255,255,.08)}
.step-list li:last-child{border-bottom:0;padding-bottom:0}
.step-num{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:rgba(23,230,161,.1);border:1px solid rgba(23,230,161,.35);color:var(--accent);font-family:var(--font-num);font-size:13px;font-weight:700}
.step-list h3{font-size:15px;font-weight:600;color:var(--t-d);margin-bottom:2px}
.step-list p{font-size:13.5px;line-height:1.7;color:var(--t-dm)}
.hero-card-media{margin-top:20px;border-radius:var(--r-md);overflow:hidden;aspect-ratio:16/9;background:var(--ink-700);position:relative;z-index:1}
.hero-card-media img{width:100%;height:100%;object-fit:cover;opacity:.92}

/* ---------- 数据窄带 ---------- */
.metrics{background:var(--ink-800);border-top:1px solid var(--line-d);border-bottom:1px solid var(--line-d);padding:26px 0}
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.metric{padding:6px 24px;border-right:1px solid var(--line-d)}
.metric:last-child{border-right:0}
.metric strong{display:block;font-family:var(--font-num);font-size:26px;font-weight:700;color:var(--accent);line-height:1.25}
.metric span{font-size:13px;color:var(--t-dm)}

/* ---------- 阶梯 ---------- */
.ladder{position:relative;display:flex;flex-direction:column;gap:18px}
.ladder-item{position:relative;display:grid;grid-template-columns:110px 1fr;gap:26px;align-items:stretch}
.ladder-item::before{content:"";position:absolute;left:52px;top:60px;bottom:-18px;width:1px;background:linear-gradient(180deg,rgba(23,230,161,.5),rgba(23,230,161,.06))}
.ladder-item:last-child::before{display:none}
.ladder-num{font-family:var(--font-num);font-size:78px;font-weight:700;line-height:1;color:rgba(12,18,16,.10);align-self:start;padding-top:2px}
.ladder-card{background:var(--card);border:1px solid var(--line-l);border-radius:16px;padding:26px 30px;box-shadow:var(--sh-card);display:flex;flex-direction:column;justify-content:center;gap:10px;transition:transform 240ms var(--ease),box-shadow 240ms var(--ease),border-color 240ms var(--ease)}
.ladder-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lift);border-color:rgba(23,230,161,.4)}
.ladder-card h3{font-size:21px;font-weight:600;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.ladder-card p{font-size:15px;color:var(--t-lm);line-height:1.8;max-width:800px}
.ladder-item:nth-child(1) .ladder-card{min-height:150px}
.ladder-item:nth-child(2) .ladder-card{min-height:172px}
.ladder-item:nth-child(3) .ladder-card{min-height:194px}
.ladder-item:nth-child(4) .ladder-card{min-height:216px}
.ladder-item:nth-child(4) .ladder-card{border-color:var(--accent-2);box-shadow:0 0 0 1px rgba(207,250,75,.25),var(--sh-card)}
.tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:6px;font-size:12px;letter-spacing:.06em;font-weight:600}
.tag--accent{background:rgba(23,230,161,.12);color:#0A8A61;border:1px solid rgba(23,230,161,.3)}
.tag--lime{background:rgba(207,250,75,.28);color:#4E6A00;border:1px solid rgba(207,250,75,.7)}
.tag--ink{background:var(--ink-900);color:var(--accent-2)}
.point-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:4px}
.point-chip{font-size:13px;color:var(--t-lm);border:1px solid var(--line-l);border-radius:var(--r-pill);padding:4px 12px;background:var(--paper)}

/* ---------- 对比 ---------- */
.compare-wrap{overflow-x:auto;padding-bottom:8px}
.compare-wrap::-webkit-scrollbar{height:8px}
.compare-wrap::-webkit-scrollbar-thumb{background:rgba(23,230,161,.5);border-radius:8px}
.compare{min-width:760px;border:1px solid var(--line-l);border-radius:var(--r-lg);overflow:hidden;background:var(--card);box-shadow:var(--sh-card)}
.compare-row{display:grid;grid-template-columns:1.15fr 1fr 1fr 1fr;border-bottom:1px solid rgba(9,14,12,.08)}
.compare-row:last-child{border-bottom:0}
.compare-cell{padding:17px 20px;font-size:14.5px;color:var(--t-lm);display:flex;align-items:center;gap:8px;min-height:56px}
.compare-feature{position:sticky;left:0;z-index:2;font-weight:600;color:var(--t-l);background:var(--paper-2)}
.compare-head .compare-cell{background:var(--paper-2);font-weight:700;color:var(--t-l);font-size:15px;min-height:64px}
.compare-head .compare-cell.is-recommend{background:rgba(23,230,161,.1)}
.compare-cell.is-recommend{background:rgba(23,230,161,.06);color:var(--t-l);font-weight:500}
.compare-head .compare-cell.is-recommend::after{content:"";position:absolute;inset:0;border-radius:2px;animation:recGlow 2.8s ease-in-out infinite}
.compare-head .compare-cell.is-recommend{position:relative;border-top:2px solid var(--accent)}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:2fr 1fr;gap:26px}
.news-main{position:relative;display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line-l);border-radius:16px;overflow:hidden;box-shadow:var(--sh-card);transition:transform 240ms var(--ease),box-shadow 240ms var(--ease),border-color 240ms var(--ease)}
.news-main::before{content:"";position:absolute;top:0;left:0;height:2px;width:0;background:var(--accent);z-index:3;transition:width 240ms var(--ease)}
.news-main:hover{transform:translateY(-4px);box-shadow:var(--sh-lift);border-color:rgba(23,230,161,.4)}
.news-main:hover::before{width:100%}
.news-main-media{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--ink-800)}
.news-main-media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease)}
.news-main:hover .news-main-media img{transform:scale(1.03)}
.news-main-body{padding:24px 26px 26px;display:flex;flex-direction:column;gap:12px}
.news-main-body h3{font-size:22px;font-weight:600;line-height:1.45}
.news-main-body h3 a{transition:color 200ms var(--ease)}
.news-main-body h3 a:hover{color:var(--accent-p)}
.news-main-body p{font-size:15px;color:var(--t-lm);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.meta-row{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--t-lm)}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:6px;background:rgba(23,230,161,.1);color:#0A8A61;font-size:12px;font-weight:600}
.arrow-link{font-size:14px;font-weight:600;color:var(--accent-p);display:inline-flex;align-items:center;gap:6px}
.news-side{display:flex;flex-direction:column;gap:14px}
.news-item{background:var(--card);border:1px solid var(--line-l);border-radius:14px;padding:18px 20px;display:flex;flex-direction:column;gap:8px;transition:transform 240ms var(--ease),border-color 240ms var(--ease),box-shadow 240ms var(--ease)}
.news-item:hover{transform:translateY(-4px);border-color:rgba(23,230,161,.4);box-shadow:var(--sh-card)}
.news-item h3{font-size:16px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-item h3 a:hover{color:var(--accent-p)}
.empty-state{border:1px dashed rgba(9,14,12,.16);border-radius:16px;background:var(--card);padding:56px 24px;display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center;grid-column:1/-1}
.empty-state svg{opacity:.55}
.empty-state p{font-size:15px;color:var(--t-lm)}

/* ---------- 限时入口带 ---------- */
.hot-band{background:var(--ink-900);color:var(--t-d);border-top:1px solid rgba(255,107,74,.35);border-bottom:1px solid rgba(255,107,74,.2);padding:56px 0;position:relative;overflow:hidden}
.hot-band::after{content:"";position:absolute;right:-100px;top:-120px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(255,107,74,.16),transparent 70%);filter:blur(90px)}
.hot-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.hot-tag{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:6px;background:rgba(255,107,74,.16);color:#FF9C85;font-size:12px;font-weight:600;letter-spacing:.08em;margin-bottom:16px}
.countdown{display:flex;gap:12px}
.cd-box{width:56px;height:64px;border-radius:12px;background:var(--ink-800);border:1px solid rgba(255,107,74,.35);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px}
.cd-box span{font-family:var(--font-num);font-size:24px;font-weight:700;line-height:1;color:var(--t-d);font-variant-numeric:tabular-nums}
.cd-box em{font-style:normal;font-size:11px;color:var(--t-dm)}
.hot-right p{font-size:15.5px;line-height:1.85;color:#C9D4D0;margin-bottom:22px;max-width:560px}

/* ---------- 表单 ---------- */
.consult-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.consult-intro h2{font-size:clamp(26px,3.2vw,38px);line-height:1.25;font-weight:700}
.consult-intro .sub{margin-top:14px;font-size:15.5px;color:var(--t-lm)}
.point-list{margin-top:30px;display:flex;flex-direction:column;gap:14px}
.point-list li{display:grid;grid-template-columns:26px 1fr;gap:12px;font-size:15px;color:var(--t-l);align-items:start}
.point-list svg{margin-top:5px}
.contact-list{margin-top:32px;padding-top:26px;border-top:1px solid var(--line-l);display:flex;flex-direction:column;gap:14px}
.contact-list li{display:flex;justify-content:space-between;gap:16px;font-size:14.5px}
.contact-list span{color:var(--t-lm)}
.contact-list b{font-weight:600;color:var(--t-l);font-family:var(--font-num)}
.form-card{background:var(--card);border:1px solid var(--line-l);border-radius:16px;padding:34px 32px;box-shadow:var(--sh-card)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.field label{font-size:14px;font-weight:600;color:var(--t-l)}
.field label i{font-style:normal;color:var(--hot);margin-left:4px}
.field input,.field select,.field textarea{width:100%;height:48px;padding:0 16px;border-radius:12px;border:1px solid var(--line-l);background:var(--paper);font-size:15px;color:var(--t-l);transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease),background-color 200ms var(--ease)}
.field textarea{height:auto;min-height:112px;padding:12px 16px;line-height:1.7;resize:vertical;font-family:inherit}
.field select{appearance:none;-webkit-appearance:none;padding-right:44px;background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%235D6A65' stroke-width='1.6' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center}
.field input::placeholder,.field textarea::placeholder{color:#9AA6A1}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent);background:#fff;box-shadow:0 0 0 4px rgba(23,230,161,.18)}
.check-row{display:flex;align-items:flex-start;gap:10px;margin:4px 0 22px}
.check-row input{width:18px;height:18px;margin-top:4px;accent-color:var(--accent-p);flex-shrink:0}
.check-row label{font-size:12.5px;color:var(--t-lm);line-height:1.7}
.form-foot{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.form-status{font-size:13.5px;display:none;align-items:center;gap:8px}
.form-status.is-ok{display:flex;color:#0A8A61}
.form-status.is-err{display:flex;color:var(--hot)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line-l)}
.faq-item:first-child{border-top:1px solid var(--line-l)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 4px;background:none;border:0;text-align:left;font-size:17px;font-weight:600;cursor:pointer;color:var(--t-l);transition:color 200ms var(--ease)}
.faq-q:hover{color:var(--accent-p)}
.faq-icon{position:relative;width:18px;height:18px;flex-shrink:0}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--accent-p);border-radius:2px;transition:transform 320ms var(--ease)}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg)}
.faq-item.is-open .faq-q{color:var(--accent-p)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows 320ms var(--ease)}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a p{padding:0 4px 24px;font-size:15.5px;line-height:1.85;color:var(--t-lm);max-width:84ch}

/* ---------- CTA 条 ---------- */
.cta-band{background:var(--ink-900);color:var(--t-d);padding:64px 0;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;left:8%;top:-120px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(23,230,161,.2),transparent 70%);filter:blur(110px)}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.3}
.cta-inner p{margin-top:10px;font-size:15px;color:var(--t-dm)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:var(--t-d);position:relative;padding-top:70px}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(23,230,161,.5),transparent)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:52px}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{font-size:14px;color:var(--t-dm);line-height:1.85;max-width:320px}
.footer-col h3{font-size:14px;font-weight:600;color:var(--t-d);letter-spacing:.06em;margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a,.footer-col li{font-size:14px;color:var(--t-dm);transition:color 200ms var(--ease)}
.footer-col a:hover{color:var(--accent)}
.footer-note{font-size:13px;color:var(--t-dm);line-height:1.9}
.footer-bar{border-top:1px solid var(--line-d);padding:22px 0;display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:12px;color:var(--t-dm)}
.footer-bar a:hover{color:var(--accent)}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity 520ms var(--ease),transform 520ms var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
@keyframes lineIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
@keyframes slideIn{from{opacity:0;transform:translateX(24px)}to{opacity:1;transform:none}}
@keyframes draw{from{transform:scaleX(0)}to{transform:scaleX(1)}}
@keyframes recGlow{0%,100%{box-shadow:inset 0 0 0 rgba(23,230,161,0)}50%{box-shadow:inset 0 0 40px rgba(23,230,161,.10)}}

/* ---------- 断点 ---------- */
@media (max-width:1080px){
  .hero-copy{grid-column:span 12}
  .hero-card{grid-column:span 12;max-width:520px}
  .news-grid{grid-template-columns:1fr}
  .consult-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:900px){
  .nav-main{display:none}
  .nav-toggle{display:grid}
  .section{padding:76px 0}
  .section--tight{padding:56px 0}
  .hero{padding:118px 0 56px;min-height:520px}
  .metrics-grid{grid-template-columns:1fr 1fr;gap:18px 0}
  .metric{border-right:0;padding:6px 16px}
  .metric:nth-child(odd){border-right:1px solid var(--line-d)}
  .hot-inner{grid-template-columns:1fr}
  .ladder-item{grid-template-columns:1fr;gap:10px}
  .ladder-item::before{display:none}
  .ladder-num{font-size:34px;color:rgba(12,18,16,.16);padding:0}
  .ladder-item .ladder-card{min-height:0!important;padding:22px 22px}
  .section-head{margin-bottom:36px}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .form-row{grid-template-columns:1fr}
  .form-card{padding:26px 20px}
}
@media (max-width:560px){
  .hero-title{font-size:clamp(30px,8.4vw,40px)}
  .hero-cta .btn{width:100%}
  .hero-trust{gap:18px}
  .hero-trust div{padding-right:16px}
  .btn{padding:0 22px}
  .footer-grid{grid-template-columns:1fr}
  .countdown{gap:8px}
  .cd-box{width:50px;height:58px}
  .news-main-body{padding:20px}
}
@media (max-width:360px){
  .container{padding:0 16px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
*,
*::before,
*::after{box-sizing:border-box}

:root{
  --ink-900:#080B0A;
  --ink-800:#0E1311;
  --ink-700:#171D1A;
  --line-d:rgba(255,255,255,.08);
  --paper:#F7F7F4;
  --paper-2:#ECEDE9;
  --card:#FFFFFF;
  --line-l:rgba(9,14,12,.10);
  --accent:#17E6A1;
  --accent-h:#3DF5B4;
  --accent-p:#0FB77E;
  --accent-2:#CFFA4B;
  --hot:#FF6B4A;
  --t-d:#F1F5F3;
  --t-dm:#98A5A0;
  --t-l:#0C1210;
  --t-lm:#5D6A65;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-card:0 1px 2px rgba(9,14,12,.04), 0 12px 32px -12px rgba(9,14,12,.14);
  --sh-deep:0 24px 60px -32px rgba(0,0,0,.85);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font-cn:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:"Space Grotesk","Inter",system-ui,-apple-system,sans-serif;
  --header-h:72px;
}

html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding-top:var(--header-h);
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.85;
  color:var(--t-l);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color 200ms var(--ease),opacity 200ms var(--ease)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}

.container{
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding:0 24px;
}

/* ============ 顶栏 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  height:var(--header-h);
  background:#0A0D0C;
  border-bottom:1px solid var(--line-d);
  transition:height 240ms var(--ease), background 240ms var(--ease), backdrop-filter 240ms var(--ease);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--accent),transparent);
  opacity:.5;
}
.site-header.is-scrolled{
  height:60px;
  background:rgba(8,11,10,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.header-inner{
  height:100%;
  display:flex;
  align-items:center;
  gap:24px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:34px;height:34px;
  display:grid;place-items:center;
  border-radius:10px;
  background:linear-gradient(150deg,var(--accent),#0FB77E);
  box-shadow:0 0 22px rgba(23,230,161,.32);
  transition:transform 240ms var(--ease);
}
.brand:hover .brand-mark{transform:translateY(-1px) rotate(-4deg)}
.brand-text{
  display:flex;
  align-items:baseline;
  gap:4px;
  font-size:17px;
  letter-spacing:.01em;
  color:var(--t-d);
  white-space:nowrap;
}
.brand-text strong{font-weight:700;font-family:var(--font-num)}
.brand-text em{
  font-style:normal;
  font-weight:500;
  color:var(--t-dm);
  font-size:15px;
}
.nav-main{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:10px 14px;
  font-size:15px;
  color:var(--t-dm);
  border-radius:var(--r-sm);
  transition:color 220ms var(--ease),background 220ms var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:4px;
  height:2px;
  border-radius:2px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform 220ms var(--ease);
}
.nav-link:hover{color:var(--t-d);background:rgba(255,255,255,.04)}
.nav-link.is-active{
  color:var(--accent);
  text-shadow:0 0 14px rgba(23,230,161,.45);
}
.nav-link.is-active::after{transform:scaleX(1)}
.header-cta{margin-left:12px}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 28px;
  border:1px solid transparent;
  border-radius:var(--r-md);
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  white-space:nowrap;
  transition:transform 180ms var(--ease),background 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease),color 200ms var(--ease),opacity 200ms var(--ease);
}
.btn-primary{
  background:var(--accent);
  color:#05140E;
  box-shadow:0 0 0 0 rgba(23,230,161,0);
}
.btn-primary:hover{
  background:var(--accent-h);
  transform:translateY(-1px);
  box-shadow:0 0 0 4px rgba(23,230,161,.14);
}
.btn-primary:active{background:var(--accent-p);transform:translateY(1px)}
.btn-ghost{
  background:transparent;
  color:var(--t-d);
  border-color:rgba(255,255,255,.18);
}
.btn-ghost:hover{
  border-color:var(--accent);
  background:rgba(23,230,161,.08);
  color:var(--accent-h);
}
.btn-hot{
  background:var(--hot);
  color:#210A04;
}
.btn-hot:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-pill{border-radius:var(--r-pill)}
.btn-sm{height:42px;padding:0 20px;font-size:14px}
.btn:disabled,
.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.btn-lg{height:52px;padding:0 32px;font-size:16px}

.hamburger{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line-d);
  border-radius:var(--r-sm);
  background:transparent;
  margin-left:auto;
  cursor:pointer;
  position:relative;
}
.hamburger span{
  position:absolute;
  left:12px;right:12px;
  height:2px;
  background:var(--t-d);
  border-radius:2px;
  transition:transform 240ms var(--ease),opacity 180ms var(--ease),top 240ms var(--ease);
}
.hamburger span:nth-child(1){top:15px}
.hamburger span:nth-child(2){top:21px}
.hamburger span:nth-child(3){top:27px}
.hamburger[aria-expanded="true"] span:nth-child(1){top:21px;transform:rotate(45deg)}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0}
.hamburger[aria-expanded="true"] span:nth-child(3){top:21px;transform:rotate(-45deg)}

.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(4,6,5,.72);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
  opacity:0;
  visibility:hidden;
  transition:opacity 240ms var(--ease),visibility 240ms var(--ease);
  z-index:90;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;
  top:0;right:0;
  height:100%;
  width:80vw;
  max-width:380px;
  background:var(--ink-900);
  border-left:1px solid var(--line-d);
  z-index:95;
  transform:translateX(102%);
  transition:transform 320ms var(--ease);
  display:flex;
  flex-direction:column;
  padding:22px 20px 26px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:18px;
  border-bottom:1px solid var(--line-d);
}
.drawer-title{
  font-size:12px;
  letter-spacing:.12em;
  color:var(--t-dm);
  text-transform:uppercase;
  font-family:var(--font-num);
}
.drawer-close{
  width:36px;height:36px;
  border-radius:var(--r-sm);
  border:1px solid var(--line-d);
  background:transparent;
  color:var(--t-d);
  cursor:pointer;
  font-size:18px;
  line-height:1;
}
.drawer-close:hover{border-color:var(--accent);color:var(--accent)}
.drawer-nav{
  margin-top:20px;
  display:flex;
  flex-direction:column;
  gap:4px;
}
.drawer-nav .nav-link{
  display:block;
  padding:14px 12px;
  font-size:16px;
  border-radius:var(--r-md);
}
.drawer-nav .nav-link::after{display:none}
.drawer-nav .nav-link.is-active{
  background:rgba(23,230,161,.08);
  border:1px solid rgba(23,230,161,.3);
}
.drawer-foot{margin-top:auto;padding-top:22px}

/* ============ 通用色带 / 区块 ============ */
.band-dark{background:var(--ink-900);color:var(--t-d)}
.band-dark .muted{color:var(--t-dm)}
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-paper{background:var(--paper)}
.section-paper-2{background:var(--paper-2)}
.section-ink{background:var(--ink-900);color:var(--t-d)}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:48px;
}
.section-head h2{
  font-size:clamp(26px,3.2vw,40px);
  line-height:1.2;
  font-weight:700;
  letter-spacing:-.01em;
}
.section-head .sub{
  margin-top:10px;
  font-size:15px;
  color:var(--t-lm);
  line-height:1.7;
}
.section-ink .section-head .sub{color:var(--t-dm)}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.12em;
  font-family:var(--font-num);
  text-transform:uppercase;
  color:var(--accent-p);
  margin-bottom:16px;
}
.eyebrow::before{
  content:"";
  width:22px;height:2px;
  background:var(--accent);
  border-radius:2px;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 10px;
  border-radius:6px;
  font-size:12px;
  letter-spacing:.12em;
  font-weight:600;
  background:rgba(9,14,12,.06);
  color:var(--t-lm);
}
.badge-accent{
  background:rgba(23,230,161,.14);
  color:#0A7A55;
}
.badge-lime{
  background:rgba(207,250,75,.24);
  color:#4C5E00;
}
.badge-hot{
  background:rgba(255,107,74,.14);
  color:#B83718;
}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* ============ 面包屑 ============ */
.crumbs{
  padding-top:24px;
  font-size:13px;
  color:var(--t-lm);
}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li+li::before{
  content:"/";
  color:rgba(9,14,12,.25);
}
.crumbs a:hover{color:var(--accent-p)}
.crumbs [aria-current="page"]{color:var(--t-l);font-weight:600}

/* ============ 首屏 ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  background:var(--ink-900);
  color:var(--t-d);
  padding:72px 0 84px;
  isolation:isolate;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  opacity:.5;
  z-index:-2;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(90deg,rgba(8,11,10,.95),rgba(8,11,10,.62)),
    repeating-linear-gradient(0deg,rgba(255,255,255,.04) 0 1px,transparent 1px 24px),
    repeating-linear-gradient(90deg,rgba(255,255,255,.04) 0 1px,transparent 1px 24px);
  z-index:-1;
}
.hero-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:24px;
  align-items:center;
}
.hero-copy{grid-column:1 / span 7}
.hero-side{grid-column:8 / span 5}
.page-hero h1{
  font-size:clamp(34px,5.2vw,58px);
  line-height:1.08;
  font-weight:800;
  letter-spacing:-.02em;
  margin:14px 0 0;
}
.page-hero h1 .hl{
  color:var(--accent);
  text-shadow:0 0 28px rgba(23,230,161,.35);
}
.hero-sub{
  margin-top:18px;
  font-size:17px;
  color:var(--t-dm);
  max-width:620px;
}
.hero-desc{
  margin-top:20px;
  padding-left:18px;
  border-left:2px solid rgba(23,230,161,.55);
  font-size:15px;
  line-height:1.9;
  color:#C6D0CC;
  max-width:640px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:32px;
}
.hero-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:28px;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 14px;
  border:1px solid var(--line-d);
  border-radius:var(--r-pill);
  font-size:13px;
  color:var(--t-dm);
  background:rgba(255,255,255,.02);
}
.tag b{color:var(--t-d);font-weight:600}

.hero-card{
  background:var(--ink-800);
  border:1px solid var(--line-d);
  border-radius:var(--r-lg);
  padding:26px;
  box-shadow:var(--sh-deep);
  position:relative;
  overflow:hidden;
}
.hero-card::before{
  content:"";
  position:absolute;
  top:0;left:0;
  width:64px;height:2px;
  background:var(--accent);
  box-shadow:0 0 16px rgba(23,230,161,.6);
}
.hero-card::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  border-radius:inherit;
}
.hero-card h2{
  font-size:14px;
  letter-spacing:.12em;
  font-family:var(--font-num);
  color:var(--t-dm);
  font-weight:600;
  text-transform:uppercase;
}
.step-mini{
  margin-top:20px;
  display:flex;
  flex-direction:column;
  gap:14px;
}
.step-mini li{
  display:grid;
  grid-template-columns:36px 1fr;
  gap:14px;
  align-items:start;
}
.step-mini .idx{
  width:36px;height:36px;
  border-radius:10px;
  display:grid;place-items:center;
  font-family:var(--font-num);
  font-size:14px;
  font-weight:700;
  color:var(--accent);
  background:rgba(23,230,161,.1);
  border:1px solid rgba(23,230,161,.28);
}
.step-mini strong{display:block;font-size:15px;color:var(--t-d);font-weight:600}
.step-mini span{font-size:13px;color:var(--t-dm);line-height:1.7}
.hero-card-fig{
  margin-top:22px;
  border-radius:var(--r-md);
  overflow:hidden;
  aspect-ratio:16/9;
  border:1px solid var(--line-d);
}
.hero-card-fig img{width:100%;height:100%;object-fit:cover}

/* ============ 横向图文流 ============ */
.flow{
  display:flex;
  flex-direction:column;
  gap:72px;
}
.flow-row{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:40px;
  align-items:center;
}
.flow-fig{
  grid-column:1 / span 6;
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  aspect-ratio:4/3;
  background:linear-gradient(140deg,#0E1311,#1D2622);
  box-shadow:var(--sh-card);
}
.flow-fig img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform 420ms var(--ease);
}
.flow-row:hover .flow-fig img{transform:scale(1.03)}
.flow-fig .fig-badge{
  position:absolute;
  left:16px;top:16px;
  z-index:2;
}
.flow-body{grid-column:7 / span 6}
.flow-row.is-rev .flow-fig{grid-column:7 / span 6;order:2}
.flow-row.is-rev .flow-body{grid-column:1 / span 6;order:1}
.flow-body h3{
  font-size:22px;
  font-weight:600;
  line-height:1.4;
  letter-spacing:-.01em;
}
.flow-body .lead{
  margin-top:14px;
  font-size:16px;
  color:var(--t-lm);
  line-height:1.85;
}
.check-list{
  margin-top:20px;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.check-list li{
  display:grid;
  grid-template-columns:20px 1fr;
  gap:12px;
  font-size:15px;
  color:var(--t-l);
  line-height:1.75;
}
.check-list li::before{
  content:"";
  width:18px;height:18px;
  margin-top:5px;
  border-radius:50%;
  background:rgba(23,230,161,.16) url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%230A7A55' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 12.6l5 5L20 6.4'/%3E%3C/svg%3E") center/12px no-repeat;
}
.flow-index{
  font-family:var(--font-num);
  font-size:13px;
  letter-spacing:.12em;
  color:var(--accent-p);
  font-weight:600;
  margin-bottom:10px;
  display:block;
}

/* ============ 终端对照 参数卡 ============ */
.spec-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.spec-card{
  background:var(--card);
  border:1px solid var(--line-l);
  border-radius:16px;
  padding:26px 22px;
  position:relative;
  overflow:hidden;
  transition:transform 240ms var(--ease),box-shadow 240ms var(--ease),border-color 240ms var(--ease);
}
.spec-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:2px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform 240ms var(--ease);
}
.spec-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-card);
  border-color:rgba(23,230,161,.3);
}
.spec-card:hover::before{transform:scaleX(1)}
.spec-card .spec-icon{
  width:42px;height:42px;
  border-radius:12px;
  display:grid;place-items:center;
  background:rgba(23,230,161,.12);
  color:#0A7A55;
  margin-bottom:18px;
}
.spec-card h3{font-size:17px;font-weight:600}
.spec-card p{margin-top:10px;font-size:14.5px;color:var(--t-lm);line-height:1.8}
.spec-card .spec-meta{
  margin-top:18px;
  padding-top:14px;
  border-top:1px solid var(--line-l);
  display:flex;
  justify-content:space-between;
  font-size:13px;
  color:var(--t-lm);
}
.spec-card .spec-meta b{color:var(--t-l);font-family:var(--font-num)}

/* ============ 排查顺序 编号清单 ============ */
.order-list{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:0 48px;
  border-top:1px solid var(--line-d);
}
.order-item{
  display:grid;
  grid-template-columns:56px 1fr;
  gap:18px;
  padding:26px 0;
  border-bottom:1px solid var(--line-d);
}
.order-item .oidx{
  font-family:var(--font-num);
  font-size:22px;
  font-weight:700;
  color:var(--accent);
  line-height:1.2;
}
.order-item h3{font-size:16.5px;font-weight:600;color:var(--t-d)}
.order-item p{margin-top:8px;font-size:14.5px;color:var(--t-dm);line-height:1.8}

/* ============ 提示带 ============ */
.notice-band{
  border:1px solid rgba(255,107,74,.35);
  background:rgba(255,107,74,.07);
  border-radius:var(--r-lg);
  padding:28px 30px;
  display:grid;
  grid-template-columns:auto 1fr auto;
  gap:24px;
  align-items:center;
}
.notice-band .nb-icon{
  width:46px;height:46px;
  border-radius:12px;
  display:grid;place-items:center;
  background:rgba(255,107,74,.16);
  color:#B83718;
}
.notice-band h3{font-size:17px;font-weight:600}
.notice-band p{margin-top:8px;font-size:14.5px;color:var(--t-lm);line-height:1.8}
.notice-band .nb-actions{display:flex;gap:12px}

/* ============ FAQ ============ */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line-l)}
.faq-item:first-child{border-top:1px solid var(--line-l)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 4px;
  background:none;
  border:0;
  cursor:pointer;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--t-l);
  transition:color 200ms var(--ease);
}
.faq-q:hover{color:var(--accent-p)}
.faq-q .plus{
  flex-shrink:0;
  width:26px;height:26px;
  position:relative;
  border-radius:50%;
  border:1px solid var(--line-l);
  transition:transform 320ms var(--ease),border-color 200ms var(--ease),background 200ms var(--ease);
}
.faq-q .plus::before,
.faq-q .plus::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:currentColor;
  border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-q .plus::before{width:11px;height:1.6px}
.faq-q .plus::after{width:1.6px;height:11px}
.faq-item.is-open .faq-q{color:var(--accent-p)}
.faq-item.is-open .plus{
  transform:rotate(45deg);
  border-color:var(--accent);
  background:rgba(23,230,161,.12);
}
.faq-a{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows 320ms var(--ease);
}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a p{
  padding:0 4px 24px;
  font-size:15.5px;
  color:var(--t-lm);
  line-height:1.9;
}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--ink-900);
  color:var(--t-d);
  border-radius:var(--r-lg);
  padding:48px 44px;
  display:grid;
  grid-template-columns:1.4fr .9fr;
  gap:36px;
  align-items:center;
  isolation:isolate;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-3.webp");
  background-size:cover;
  background-position:center;
  opacity:.28;
  z-index:-1;
}
.cta-band::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(8,11,10,.94),rgba(8,11,10,.68));
  z-index:-1;
}
.cta-band h2{font-size:clamp(24px,2.8vw,34px);font-weight:700;line-height:1.25}
.cta-band p{margin-top:14px;font-size:15.5px;color:var(--t-dm);max-width:560px}
.cta-actions{display:flex;flex-direction:column;gap:12px}
.cta-actions .btn{width:100%}

/* ============ 相关分类 ============ */
.related-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.related-card{
  display:block;
  background:var(--card);
  border:1px solid var(--line-l);
  border-radius:16px;
  padding:28px;
  position:relative;
  overflow:hidden;
  transition:transform 240ms var(--ease),box-shadow 240ms var(--ease),border-color 240ms var(--ease);
}
.related-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:2px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform 240ms var(--ease);
}
.related-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-card);
  border-color:rgba(23,230,161,.3);
}
.related-card:hover::before{transform:scaleX(1)}
.related-card h3{font-size:19px;font-weight:600;margin-top:14px}
.related-card p{margin-top:10px;font-size:14.5px;color:var(--t-lm);line-height:1.8}
.related-card .go{
  margin-top:20px;
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--accent-p);
}
.related-card .go svg{transition:transform 240ms var(--ease)}
.related-card:hover .go svg{transform:translateX(4px)}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-900);
  color:var(--t-d);
  padding:72px 0 0;
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--accent),transparent);
  opacity:.5;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:56px;
}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{
  font-size:14px;
  color:var(--t-dm);
  line-height:1.8;
  max-width:340px;
}
.footer-col h3{
  font-size:13px;
  letter-spacing:.12em;
  font-family:var(--font-num);
  text-transform:uppercase;
  color:var(--t-dm);
  margin-bottom:18px;
  font-weight:600;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{
  font-size:14px;
  color:var(--t-dm);
}
.footer-col a:hover{color:var(--accent)}
.footer-note{
  font-size:14px;
  color:var(--t-dm);
  line-height:1.9;
}
.footer-bar{
  border-top:1px solid var(--line-d);
  padding:22px 24px 26px;
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  justify-content:space-between;
  font-size:12.5px;
  color:var(--t-dm);
}

/* ============ 动效 ============ */
.reveal{
  opacity:0;
  transform:translateY(18px);
  transition:opacity 520ms var(--ease),transform 520ms var(--ease);
}
.reveal.is-in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
  }
  .reveal{opacity:1;transform:none}
}

/* ============ 断点 ============ */
@media (max-width:1080px){
  .spec-grid{grid-template-columns:repeat(2,1fr)}
  .order-list{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}

@media (max-width:900px){
  :root{--header-h:60px}
  .nav-main{display:none}
  .header-cta{display:none}
  .hamburger{display:block}
  .section{padding:64px 0}
  .flow{gap:52px}
  .flow-row{grid-template-columns:1fr;gap:24px}
  .flow-fig,
  .flow-body,
  .flow-row.is-rev .flow-fig,
  .flow-row.is-rev .flow-body{grid-column:1 / -1;order:initial}
  .flow-fig{aspect-ratio:16/10}
  .hero-copy,
  .hero-side{grid-column:1 / -1}
  .hero-side{margin-top:12px}
  .hero-card{max-width:520px}
  .cta-band{grid-template-columns:1fr;padding:38px 26px}
  .notice-band{grid-template-columns:auto 1fr;padding:24px}
  .notice-band .nb-actions{grid-column:1 / -1}
  .related-grid{grid-template-columns:1fr}
}

@media (max-width:768px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .page-hero{padding:48px 0 60px}
  .spec-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding-bottom:40px}
}

@media (max-width:560px){
  body{font-size:16px}
  .page-hero h1{font-size:clamp(30px,8vw,38px)}
  .hero-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bar{flex-direction:column}
  .flow-body h3{font-size:19px}
}

/* roulang page: article */
/* ============ 设计变量 ============ */
:root{
  --ink-900:#080B0A;
  --ink-800:#0E1311;
  --ink-700:#171D1A;
  --line-d:rgba(255,255,255,.08);
  --paper:#F7F7F4;
  --paper-2:#ECEDE9;
  --card:#FFFFFF;
  --line-l:rgba(9,14,12,.10);
  --accent:#17E6A1;
  --accent-h:#3DF5B4;
  --accent-p:#0FB77E;
  --accent-2:#CFFA4B;
  --hot:#FF6B4A;
  --t-d:#F1F5F3;
  --t-dm:#98A5A0;
  --t-l:#0C1210;
  --t-lm:#5D6A65;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-l:0 1px 2px rgba(9,14,12,.04),0 12px 32px -12px rgba(9,14,12,.14);
  --sh-l-h:0 2px 6px rgba(9,14,12,.06),0 22px 48px -18px rgba(9,14,12,.22);
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:"Space Grotesk","Inter",system-ui,-apple-system,sans-serif;
  --ease:cubic-bezier(.2,.7,.2,1);
}
/* ============ reset / base ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding-top:72px;
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  color:var(--t-l);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
::selection{background:rgba(23,230,161,.28)}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 24px}
@media (min-width:1600px){.container{max-width:1360px}}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border:0;border-radius:var(--r-md);
  font-size:15.5px;font-weight:600;letter-spacing:.01em;cursor:pointer;
  transition:transform .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),box-shadow .24s var(--ease);
}
.btn-primary{background:var(--accent);color:#05140E}
.btn-primary:hover{background:var(--accent-h);transform:translateY(-1px);box-shadow:0 0 0 4px rgba(23,230,161,.14)}
.btn-primary:active{background:var(--accent-p);transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--t-d);border:1px solid rgba(255,255,255,.18)}
.btn-ghost:hover{border-color:var(--accent);background:rgba(23,230,161,.08);transform:translateY(-1px)}
.btn-pill{border-radius:var(--r-pill)}
.btn-block{width:100%}

/* ============ 顶栏导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  background:#0A0D0C;
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(23,230,161,.55),transparent);
}
.site-header.is-scrolled{background:rgba(8,11,10,.88);backdrop-filter:blur(14px);box-shadow:0 14px 34px -20px rgba(0,0,0,.95)}
.header-inner{display:flex;align-items:center;gap:26px;height:72px;transition:height .24s var(--ease)}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:32px;height:32px;border-radius:9px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--accent),#0FB77E);
  box-shadow:0 0 20px rgba(23,230,161,.32);
}
.brand-text{font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--t-d);line-height:1;white-space:nowrap}
.brand-text strong{color:var(--t-d);font-weight:800}
.brand-text em{font-style:normal;color:var(--accent);margin-left:2px}
.nav-main{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;
  font-size:15px;color:var(--t-dm);border-radius:var(--r-sm);
  transition:color .22s var(--ease),background .22s var(--ease);white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:var(--accent);opacity:0;transform:scaleX(.4);
  transition:opacity .22s var(--ease),transform .22s var(--ease);
}
.nav-link:hover{color:var(--t-d);background:rgba(255,255,255,.04)}
.nav-link.is-active{color:var(--accent);text-shadow:0 0 12px rgba(23,230,161,.45)}
.nav-link.is-active::after{opacity:1;transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:8px}
.header-actions .btn{height:42px;padding:0 20px;font-size:14.5px}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid rgba(255,255,255,.16);border-radius:var(--r-md);
  background:transparent;cursor:pointer;position:relative;
}
.nav-toggle span{
  position:absolute;left:11px;right:11px;height:2px;border-radius:2px;background:var(--t-d);
  transition:transform .24s var(--ease),opacity .18s var(--ease);
}
.nav-toggle span:nth-child(1){top:14px}
.nav-toggle span:nth-child(2){top:20px}
.nav-toggle span:nth-child(3){top:26px}
.nav-toggle.is-active span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-active span:nth-child(2){opacity:0}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.drawer-mask{
  position:fixed;inset:0;z-index:95;background:rgba(4,6,5,.72);backdrop-filter:blur(6px);
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;z-index:96;width:80vw;max-width:380px;height:100%;
  background:var(--ink-800);border-left:1px solid var(--line-d);
  transform:translateX(102%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;padding:22px 22px 28px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-title{font-size:13px;letter-spacing:.12em;color:var(--t-dm);text-transform:uppercase;margin-bottom:12px}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:26px}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 14px;border-radius:var(--r-md);color:var(--t-d);font-size:16px;
  border:1px solid transparent;transition:background .2s var(--ease),border-color .2s var(--ease);
}
.drawer-nav a:hover{background:rgba(23,230,161,.08);border-color:rgba(23,230,161,.28)}
.drawer-nav a.is-active{color:var(--accent);border-color:rgba(23,230,161,.32)}
.drawer-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line-d)}

/* ============ 页头 ============ */
.page-hero{position:relative;background:var(--ink-900);color:var(--t-d);overflow:hidden}
.page-hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:.42;filter:saturate(.9);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(90deg,rgba(8,11,10,.96) 8%,rgba(8,11,10,.72) 58%,rgba(8,11,10,.94) 100%),
    linear-gradient(180deg,rgba(8,11,10,.3),rgba(8,11,10,.9));
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:24px 24px;
}
.page-hero-inner{position:relative;z-index:2;padding:44px 0 56px;max-width:900px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t-dm);margin-bottom:22px}
.breadcrumb a{color:var(--t-dm);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb span[aria-current]{color:var(--t-d)}
.breadcrumb .sep{opacity:.5}
.page-hero-kicker{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;margin-bottom:18px;
  font-size:12px;letter-spacing:.12em;color:var(--accent);
  border:1px solid rgba(23,230,161,.34);border-radius:var(--r-sm);background:rgba(23,230,161,.07);
}
.article-title{
  font-size:clamp(26px,4vw,44px);line-height:1.2;font-weight:800;letter-spacing:-.02em;color:var(--t-d);
  max-width:20em;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:24px;font-size:14px;color:var(--t-dm)}
.article-meta .num{color:var(--t-d)}
.article-meta .bar{width:1px;height:14px;background:rgba(255,255,255,.18)}

/* ============ 正文布局 ============ */
.article-layout{padding:64px 0 88px;background:var(--paper)}
.article-grid{
  display:grid;grid-template-columns:minmax(0,820px) 250px;gap:56px;
  justify-content:center;align-items:start;
}
.article-body{min-width:0}
.prose{
  font-size:17px;line-height:1.9;color:var(--t-l);overflow-wrap:break-word;
}
.prose > *:first-child{margin-top:0}
.prose p{margin:0 0 1.2em}
.prose h2{
  position:relative;font-size:clamp(22px,2.4vw,28px);line-height:1.35;font-weight:700;
  margin:2.4em 0 .9em;padding-left:16px;letter-spacing:-.01em;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:2px;
  background:var(--accent);
}
.prose h3{font-size:20px;line-height:1.4;font-weight:600;margin:1.9em 0 .7em}
.prose h4{font-size:17.5px;font-weight:600;margin:1.6em 0 .6em;color:var(--t-l)}
.prose ul,.prose ol{margin:0 0 1.3em;padding-left:1.35em}
.prose ul li,.prose ol li{margin:.5em 0;line-height:1.8}
.prose ul li{position:relative}
.prose ul{padding-left:1.1em}
.prose ul > li::marker{color:var(--accent-p)}
.prose ol{list-style:decimal}
.prose ol > li::marker{color:var(--accent-p);font-weight:600;font-family:var(--font-num)}
.prose blockquote{
  margin:1.6em 0;padding:18px 22px;border-left:3px solid var(--accent);
  background:var(--paper-2);border-radius:0 var(--r-md) var(--r-md) 0;color:#3A4642;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{border-radius:var(--r-md);margin:1.6em 0;box-shadow:var(--sh-l)}
.prose figure{margin:1.8em 0}
.prose figcaption{font-size:13px;color:var(--t-lm);text-align:center;margin-top:10px}
.prose a{color:#0B8F63;text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;transition:color .2s var(--ease)}
.prose a:hover{color:var(--accent-p)}
.prose strong{font-weight:700;color:#050A08}
.prose hr{border:0;height:1px;background:var(--line-l);margin:2.4em 0}
.prose table{
  display:block;width:100%;max-width:100%;overflow-x:auto;
  border-collapse:collapse;font-size:15px;margin:1.6em 0;border-radius:var(--r-md);
}
.prose thead th{background:var(--ink-800);color:var(--t-d);font-weight:600;text-align:left}
.prose th,.prose td{padding:12px 16px;border-bottom:1px solid var(--line-l);white-space:nowrap}
.prose tbody tr:nth-child(even){background:rgba(9,14,12,.028)}
.prose code{font-family:var(--font-num);font-size:.92em;background:var(--paper-2);padding:2px 6px;border-radius:6px}

/* 空态 */
.empty-state{
  display:flex;flex-direction:column;align-items:center;text-align:center;gap:14px;
  padding:64px 28px;background:var(--card);border:1px solid var(--line-l);border-radius:var(--r-lg);box-shadow:var(--sh-l);
}
.empty-icon{
  width:56px;height:56px;border-radius:16px;display:grid;place-items:center;
  background:rgba(23,230,161,.12);border:1px solid rgba(23,230,161,.35);
}
.empty-state h2{font-size:20px;font-weight:700}
.empty-state p{color:var(--t-lm);font-size:15px;max-width:34em}

/* 返回 */
.back-row{margin-top:44px;padding-top:26px;border-top:1px solid var(--line-l)}
.back-link{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:#0B8F63;transition:gap .2s var(--ease),color .2s var(--ease)}
.back-link:hover{gap:14px;color:var(--accent-p)}

/* 侧栏 */
.article-aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.aside-card{background:var(--card);border:1px solid var(--line-l);border-radius:var(--r-md);padding:20px;box-shadow:var(--sh-l)}
.aside-card h3{font-size:13px;letter-spacing:.12em;color:var(--t-lm);font-weight:600;margin-bottom:14px}
.toc-list{display:flex;flex-direction:column;gap:2px;font-size:14px}
.toc-list a{
  display:block;padding:7px 10px;border-left:2px solid transparent;color:var(--t-lm);
  border-radius:0 6px 6px 0;line-height:1.5;transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.toc-list a:hover{color:var(--t-l);background:rgba(9,14,12,.04)}
.toc-list a.is-current{color:#0B8F63;border-left-color:var(--accent);background:rgba(23,230,161,.09);font-weight:600}
.aside-cta{background:var(--ink-800);border:1px solid var(--line-d);color:var(--t-d)}
.aside-cta h3{color:var(--t-dm)}
.aside-cta p{font-size:14px;color:var(--t-dm);margin-bottom:16px;line-height:1.7}

/* ============ 相关推荐 ============ */
.related{padding:88px 0;background:var(--paper-2)}
.sec-head{margin-bottom:40px;max-width:720px}
.sec-head h2{font-size:clamp(24px,3vw,34px);font-weight:700;letter-spacing:-.015em;line-height:1.25}
.sec-head p{margin-top:10px;color:var(--t-lm);font-size:15.5px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.rel-card{
  position:relative;display:flex;flex-direction:column;background:var(--card);
  border:1px solid var(--line-l);border-radius:16px;overflow:hidden;box-shadow:var(--sh-l);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.rel-card::before{
  content:"";position:absolute;top:0;left:0;height:2px;width:0;background:var(--accent);
  transition:width .32s var(--ease);z-index:3;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-l-h);border-color:rgba(23,230,161,.4)}
.rel-card:hover::before{width:100%}
.rel-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:linear-gradient(135deg,#0E1311,#1B2521)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .42s var(--ease)}
.rel-card:hover .rel-thumb img{transform:scale(1.03)}
.rel-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-tag{
  align-self:flex-start;font-size:12px;letter-spacing:.1em;color:#0B8F63;
  background:rgba(23,230,161,.14);border:1px solid rgba(23,230,161,.3);
  padding:4px 10px;border-radius:6px;
}
.rel-body h3{font-size:18px;font-weight:600;line-height:1.45}
.rel-body p{font-size:14.5px;color:var(--t-lm);line-height:1.7}
.rel-more{margin-top:auto;display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;color:#0B8F63}
.rel-card:hover .rel-more{gap:12px}

/* ============ CTA 条 ============ */
.cta-band{background:var(--ink-900);color:var(--t-d);position:relative;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(560px 220px at 12% 0%,rgba(23,230,161,.16),transparent 70%);
}
.cta-inner{
  position:relative;display:flex;align-items:center;justify-content:space-between;gap:40px;
  padding:64px 0;flex-wrap:wrap;
}
.cta-inner h2{font-size:clamp(23px,2.8vw,32px);font-weight:700;letter-spacing:-.015em;line-height:1.3}
.cta-inner p{margin-top:12px;color:var(--t-dm);font-size:15.5px;max-width:52ch}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:var(--t-dm);position:relative;padding-top:72px}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(23,230,161,.5),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:56px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--t-dm);max-width:34ch}
.footer-col h3{font-size:13px;letter-spacing:.12em;color:var(--t-d);font-weight:600;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--t-dm);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--accent)}
.footer-note{font-size:14px;line-height:1.9;color:var(--t-dm)}
.footer-bar{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 24px 28px;border-top:1px solid var(--line-d);font-size:12.5px;color:#7C8A85;
}
.footer-bar span:last-child{color:#6E7C77}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .52s var(--ease),transform .52s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1080px){
  .article-grid{grid-template-columns:minmax(0,1fr);gap:0}
  .article-aside{display:none}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:900px){
  .nav-main{display:none}
  .header-actions .btn{display:none}
  .nav-toggle{display:block}
  body{padding-top:60px}
  .header-inner{height:60px;gap:14px}
  .brand-text{font-size:16px}
  .page-hero-inner{padding:34px 0 44px}
  .article-layout{padding:48px 0 64px}
  .cta-inner{padding:52px 0;gap:28px}
}
@media (max-width:768px){
  .related{padding:64px 0}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .cta-inner h2{font-size:22px}
  .btn{height:46px;padding:0 22px}
}
@media (max-width:560px){
  .container{padding:0 18px}
  body{font-size:16px}
  .prose{font-size:16px}
  .article-meta{gap:10px;font-size:13px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:40px}
  .footer-bar{flex-direction:column;gap:8px}
  .rel-body{padding:18px}
}
@media (max-width:360px){
  .container{padding:0 16px}
  .brand-text{font-size:15px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --ink-900:#080B0A;
  --ink-800:#0E1311;
  --ink-700:#171D1A;
  --line-d:rgba(255,255,255,.08);
  --paper:#F7F7F4;
  --paper-2:#ECEDE9;
  --card:#FFFFFF;
  --line-l:rgba(9,14,12,.10);
  --accent:#17E6A1;
  --accent-h:#3DF5B4;
  --accent-p:#0FB77E;
  --accent-2:#CFFA4B;
  --hot:#FF6B4A;
  --t-d:#F1F5F3;
  --t-dm:#98A5A0;
  --t-l:#0C1210;
  --t-lm:#5D6A65;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --shadow-l:0 1px 2px rgba(9,14,12,.04),0 12px 32px -12px rgba(9,14,12,.14);
  --shadow-l-hi:0 1px 2px rgba(9,14,12,.05),0 20px 44px -16px rgba(9,14,12,.22);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Space Grotesk","Inter",system-ui,sans-serif;
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.85;
  color:var(--t-l);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{line-height:1.2;font-weight:700;letter-spacing:-.01em}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
::selection{background:rgba(23,230,161,.35)}

.container{width:min(1280px,100% - 48px);margin:0 auto}
@media (min-width:1500px){.container{width:min(1360px,100% - 64px)}}

/* ---------- header ---------- */
.site-header{
  position:fixed;
  inset:0 0 auto 0;
  z-index:120;
  background:rgba(10,13,12,.9);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:background-color .28s var(--ease),box-shadow .28s var(--ease);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(23,230,161,.55),transparent);
}
.site-header.is-scrolled{background:rgba(8,11,10,.97);box-shadow:0 12px 30px -18px rgba(0,0,0,.9)}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:var(--header-h);
  transition:height .26s var(--ease);
}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;
  display:grid;place-items:center;
  border-radius:10px;
  background:linear-gradient(150deg,var(--accent),#0EAE7C);
  box-shadow:0 0 20px rgba(23,230,161,.28);
}
.brand-text{display:flex;align-items:baseline;gap:4px;font-size:17px;letter-spacing:.01em;color:var(--t-d)}
.brand-text strong{font-weight:700;color:#fff}
.brand-text em{font-style:normal;font-weight:500;color:var(--accent)}
.nav-main{display:flex;align-items:center;gap:6px;margin-left:14px}
.nav-link{
  position:relative;
  padding:10px 14px;
  font-size:15px;
  font-weight:500;
  color:var(--t-dm);
  border-radius:var(--r-sm);
  transition:color .22s var(--ease),background-color .22s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.nav-link:hover{color:var(--t-d);background:rgba(255,255,255,.05)}
.nav-link.is-active{color:var(--accent);text-shadow:0 0 14px rgba(23,230,161,.5)}
.nav-link.is-active::after{transform:scaleX(1);box-shadow:0 0 12px rgba(23,230,161,.75)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.14);
  position:relative;
}
.nav-toggle span{
  position:absolute;
  left:11px;right:11px;
  height:2px;
  border-radius:2px;
  background:var(--t-d);
  transition:transform .26s var(--ease),opacity .2s var(--ease),top .26s var(--ease);
}
.nav-toggle span:nth-child(1){top:14px}
.nav-toggle span:nth-child(2){top:20px}
.nav-toggle span:nth-child(3){top:26px}
.nav-toggle.is-open span:nth-child(1){top:20px;transform:rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){top:20px;transform:rotate(-45deg)}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;
  border-radius:var(--r-md);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  white-space:nowrap;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .24s var(--ease);
}
.btn-pill{border-radius:var(--r-pill)}
.btn-primary{background:var(--accent);color:#05140E}
.btn-primary:hover{background:var(--accent-h);transform:translateY(-1px);box-shadow:0 0 0 4px rgba(23,230,161,.14)}
.btn-primary:active{background:var(--accent-p);transform:translateY(1px)}
.btn-ghost{border:1px solid rgba(255,255,255,.18);color:var(--t-d)}
.btn-ghost:hover{border-color:var(--accent);background:rgba(23,230,161,.08);color:#fff}
.btn-ghost-dark{border:1px solid rgba(9,14,12,.16);color:var(--t-l);background:transparent}
.btn-ghost-dark:hover{border-color:var(--accent);background:rgba(23,230,161,.08)}
.btn-hot{background:var(--hot);color:#1A0A05}
.btn-hot:hover{background:#FF8367;transform:translateY(-1px);box-shadow:0 0 0 4px rgba(255,107,74,.16)}
.btn-block{width:100%}
.btn-sm{height:42px;padding:0 20px;font-size:14px}

/* drawer */
.scrim{
  position:fixed;inset:0;z-index:130;
  background:rgba(4,6,5,.72);
  backdrop-filter:blur(6px);
  opacity:0;visibility:hidden;
  transition:opacity .28s var(--ease),visibility .28s var(--ease);
}
.scrim.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:140;
  width:80vw;max-width:380px;
  background:var(--ink-800);
  border-left:1px solid var(--line-d);
  transform:translateX(102%);
  transition:transform .32s var(--ease);
  display:flex;flex-direction:column;
  padding:22px;
  overflow-y:auto;
}
.drawer.is-open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-title{font-size:14px;letter-spacing:.12em;color:var(--t-dm);text-transform:uppercase}
.drawer-close{width:38px;height:38px;border-radius:var(--r-sm);border:1px solid rgba(255,255,255,.14);color:var(--t-d);display:grid;place-items:center}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:26px}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  padding:15px 14px;
  border-radius:var(--r-md);
  color:var(--t-d);
  font-size:16px;font-weight:500;
  background:rgba(255,255,255,.03);
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.drawer-nav a:hover{background:rgba(23,230,161,.1);color:var(--accent)}
.drawer-nav a.is-active{background:rgba(23,230,161,.12);color:var(--accent)}
.drawer-note{font-size:13px;line-height:1.8;color:var(--t-dm);margin-bottom:20px}
.drawer-foot{margin-top:auto}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  padding:152px 0 84px;
  background:var(--ink-900);
  color:var(--t-d);
  overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.42;
}
.hero-veil{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(8,11,10,.96) 8%,rgba(8,11,10,.72) 52%,rgba(8,11,10,.5) 100%);
}
.hero-grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:24px 24px;
  mask-image:radial-gradient(circle at 30% 20%,#000 0%,transparent 78%);
}
.hero-glow{
  position:absolute;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(23,230,161,.28),transparent 68%);
  filter:blur(120px);
  top:-160px;right:-60px;
}
.hero-glow.two{top:auto;bottom:-260px;left:-140px;right:auto;background:radial-gradient(circle,rgba(207,250,75,.16),transparent 70%)}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:56px;align-items:center}
.crumbs{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--t-dm);margin-bottom:18px}
.crumbs a{color:var(--t-dm);transition:color .2s var(--ease)}
.crumbs a:hover{color:var(--accent)}
.crumbs span{color:rgba(255,255,255,.25)}
.crumbs em{font-style:normal;color:var(--accent)}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 12px;
  border-radius:var(--r-pill);
  border:1px solid rgba(23,230,161,.34);
  background:rgba(23,230,161,.08);
  color:var(--accent);
  font-size:12px;letter-spacing:.12em;
  margin-bottom:20px;
}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent);display:block}
h1.hero-title{
  font-size:clamp(34px,5.2vw,58px);
  line-height:1.08;
  font-weight:800;
  letter-spacing:-.02em;
  color:#fff;
}
h1.hero-title em{font-style:normal;color:var(--accent)}
.hero-sub{margin-top:18px;font-size:clamp(16px,1.6vw,19px);color:var(--t-d);max-width:620px}
.hero-desc{margin-top:16px;font-size:15px;line-height:1.9;color:var(--t-dm);max-width:660px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-metrics{display:flex;flex-wrap:wrap;gap:26px;margin-top:38px;padding-top:24px;border-top:1px solid var(--line-d)}
.metric{display:flex;flex-direction:column;gap:4px;min-width:118px;position:relative}
.metric + .metric{padding-left:26px}
.metric + .metric::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:1px;background:var(--line-d)}
.metric b{font-family:var(--font-num);font-size:15px;font-weight:600;color:var(--accent);letter-spacing:.02em}
.metric span{font-size:13px;color:var(--t-dm)}

.hero-card{
  background:linear-gradient(180deg,var(--ink-800),#0A0E0C);
  border:1px solid var(--line-d);
  border-radius:var(--r-lg);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  padding:22px;
  position:relative;
  overflow:hidden;
}
.hero-card::before{
  content:"";
  position:absolute;top:0;left:0;width:64px;height:2px;
  background:var(--accent);
  box-shadow:0 0 18px rgba(23,230,161,.8);
}
.hero-card::after{
  content:"";
  position:absolute;top:0;right:0;width:2px;height:64px;
  background:linear-gradient(180deg,var(--accent),transparent);
}
.hero-card img{border-radius:var(--r-md);width:100%;aspect-ratio:16/10;object-fit:cover;margin-bottom:16px}
.hero-card h2{font-size:16px;color:#fff;margin-bottom:10px}
.hero-steps{display:flex;flex-direction:column;gap:10px}
.hero-steps li{display:flex;gap:10px;font-size:14px;color:var(--t-dm);line-height:1.7}
.hero-steps li i{
  flex:0 0 auto;width:20px;height:20px;margin-top:3px;
  border-radius:6px;display:grid;place-items:center;
  background:rgba(23,230,161,.14);
  color:var(--accent);
  font-family:var(--font-num);
  font-size:11px;font-style:normal;
}

/* ---------- trust band ---------- */
.trust-band{background:var(--ink-900);border-top:1px solid var(--line-d);border-bottom:1px solid var(--line-d)}
.trust-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0}
.trust-item{padding:26px 24px;display:flex;gap:14px;align-items:flex-start;position:relative}
.trust-item + .trust-item::before{content:"";position:absolute;left:0;top:24px;bottom:24px;width:1px;background:var(--line-d)}
.trust-icon{
  width:38px;height:38px;flex:0 0 auto;
  border-radius:10px;
  display:grid;place-items:center;
  background:rgba(23,230,161,.1);
  border:1px solid rgba(23,230,161,.24);
}
.trust-item h3{font-size:15px;color:#fff;margin-bottom:4px}
.trust-item p{font-size:13px;line-height:1.7;color:var(--t-dm)}

/* ---------- sections ---------- */
.section{padding:96px 0}
.section.tight{padding:72px 0}
.section-paper{background:var(--paper)}
.section-paper2{background:var(--paper-2)}
.section-ink{background:var(--ink-900);color:var(--t-d)}
.section-head{max-width:720px;margin-bottom:44px}
.section-head .eyebrow{
  font-size:12px;letter-spacing:.12em;color:var(--accent);
  display:inline-block;margin-bottom:12px;font-weight:600;
}
.section-head h2{font-size:clamp(26px,3.2vw,40px);color:var(--t-l)}
.section-ink .section-head h2{color:#fff}
.section-head p{margin-top:12px;font-size:15px;color:var(--t-lm)}
.section-ink .section-head p{color:var(--t-dm)}
.section-head.between{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}
.text-link{font-size:14px;font-weight:600;color:var(--accent-p);display:inline-flex;align-items:center;gap:6px;transition:color .2s var(--ease),gap .2s var(--ease)}
.text-link:hover{color:#0B8C61;gap:10px}

/* ---------- stage: numbered list + sidebar ---------- */
.stage{display:grid;grid-template-columns:minmax(0,1fr) 344px;gap:46px;align-items:start}
.num-list{border-radius:var(--r-lg);overflow:hidden}
.num-item{
  display:grid;
  grid-template-columns:104px minmax(0,1fr);
  gap:22px;
  padding:26px 24px;
  border-top:1px solid var(--line-l);
  background:transparent;
  position:relative;
  transition:background-color .24s var(--ease),box-shadow .24s var(--ease),transform .24s var(--ease);
}
.num-item:last-child{border-bottom:1px solid var(--line-l)}
.num-item::before{
  content:"";
  position:absolute;left:0;top:0;bottom:0;width:2px;
  background:var(--accent);
  transform:scaleY(0);
  transform-origin:top center;
  transition:transform .24s var(--ease);
}
.num-item:hover{background:var(--card);box-shadow:var(--shadow-l);transform:translateY(-2px)}
.num-item:hover::before{transform:scaleY(1)}
.num-index{
  font-family:var(--font-num);
  font-size:46px;
  font-weight:700;
  line-height:1;
  color:rgba(9,14,12,.13);
  font-variant-numeric:tabular-nums;
  transition:color .24s var(--ease);
  padding-top:2px;
}
.num-item:hover .num-index{color:var(--accent)}
.num-body h3{font-size:20px;color:var(--t-l);margin-bottom:8px}
.num-body p{font-size:15px;line-height:1.8;color:var(--t-lm)}
.num-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.chip{
  display:inline-flex;align-items:center;
  padding:4px 10px;
  font-size:12px;letter-spacing:.04em;
  border-radius:var(--r-sm);
  background:rgba(23,230,161,.12);
  color:#0B8C61;
  border:1px solid rgba(23,230,161,.28);
}
.chip.neutral{background:rgba(9,14,12,.05);color:var(--t-lm);border-color:var(--line-l)}

/* sidebar */
.sticky-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--card);
  border:1px solid var(--line-l);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-l);
  padding:22px;
}
.side-card img{border-radius:var(--r-md);aspect-ratio:4/3;object-fit:cover;margin-bottom:16px}
.side-card h3{font-size:16px;margin-bottom:12px;color:var(--t-l)}
.side-links{display:flex;flex-direction:column;gap:2px}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 12px;
  border-radius:var(--r-md);
  font-size:15px;
  color:var(--t-lm);
  transition:background-color .2s var(--ease),color .2s var(--ease),padding-left .2s var(--ease);
}
.side-links a:hover{background:var(--paper-2);color:var(--t-l);padding-left:16px}
.side-links a.is-current{background:rgba(23,230,161,.13);color:#0B8C61;font-weight:600}
.side-links a span{font-family:var(--font-num);font-size:12px;color:var(--t-lm)}
.side-card.dark{
  background:linear-gradient(180deg,var(--ink-800),#0A0E0C);
  border-color:var(--line-d);
  color:var(--t-d);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.side-card.dark h3{color:#fff}
.side-card.dark p{font-size:14px;line-height:1.8;color:var(--t-dm);margin-bottom:16px}
.side-card.dark .side-note{margin-top:12px;font-size:12px;color:var(--t-dm)}

/* ---------- flow ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.flow-card{
  border:1px solid var(--line-d);
  border-radius:var(--r-lg);
  padding:24px 22px;
  background:rgba(255,255,255,.02);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  transition:border-color .24s var(--ease),transform .24s var(--ease),background-color .24s var(--ease);
}
.flow-card:hover{border-color:rgba(23,230,161,.4);transform:translateY(-4px);background:rgba(23,230,161,.05)}
.flow-step{
  font-family:var(--font-num);
  font-size:13px;
  letter-spacing:.12em;
  color:var(--accent);
  margin-bottom:14px;
  display:block;
}
.flow-card h3{font-size:18px;color:#fff;margin-bottom:8px}
.flow-card p{font-size:14px;line-height:1.8;color:var(--t-dm)}

/* ---------- faq ---------- */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line-l)}
.faq-item:first-child{border-top:1px solid var(--line-l)}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;
  font-size:17px;font-weight:600;
  color:var(--t-l);
  text-align:left;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:#0B8C61}
.faq-plus{
  flex:0 0 auto;
  width:26px;height:26px;
  position:relative;
  border-radius:50%;
  border:1px solid var(--line-l);
  transition:transform .3s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.faq-plus::before,.faq-plus::after{
  content:"";position:absolute;background:currentColor;
  top:50%;left:50%;
  width:11px;height:1.6px;
  transform:translate(-50%,-50%);
  border-radius:2px;
}
.faq-plus::after{transform:translate(-50%,-50%) rotate(90deg)}
.faq-item.is-open .faq-plus{transform:rotate(45deg);border-color:var(--accent);background:rgba(23,230,161,.12);color:var(--accent)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .32s var(--ease)}
.faq-a > div{overflow:hidden}
.faq-a p{padding:0 4px 24px;font-size:15px;line-height:1.9;color:var(--t-lm);max-width:720px}

/* ---------- related + cta ---------- */
.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.related-card{
  display:flex;gap:18px;align-items:center;
  background:var(--card);
  border:1px solid var(--line-l);
  border-radius:var(--r-lg);
  padding:18px;
  box-shadow:var(--shadow-l);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-l-hi);border-color:rgba(23,230,161,.4)}
.related-card img{width:112px;height:84px;flex:0 0 auto;border-radius:var(--r-md);object-fit:cover}
.related-card h3{font-size:17px;margin-bottom:6px}
.related-card p{font-size:13px;line-height:1.7;color:var(--t-lm)}
.related-card.is-current{background:rgba(23,230,161,.07);border-color:rgba(23,230,161,.36)}

.cta-band{
  background:linear-gradient(120deg,var(--ink-900) 20%,#0D1714 100%);
  border-top:1px solid var(--line-d);
  border-bottom:1px solid var(--line-d);
  color:var(--t-d);
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;padding:56px 0}
.cta-inner h2{font-size:clamp(24px,2.6vw,32px);color:#fff;margin-bottom:10px}
.cta-inner p{font-size:15px;color:var(--t-dm);max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto}
.cta-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.12em;
  color:var(--hot);
  border:1px solid rgba(255,107,74,.4);
  background:rgba(255,107,74,.09);
  padding:5px 12px;border-radius:var(--r-pill);
  margin-bottom:16px;
}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:var(--t-d);position:relative;padding-top:72px}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(23,230,161,.5),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:56px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.9;color:var(--t-dm);max-width:340px}
.footer-col h3{font-size:14px;letter-spacing:.06em;color:#fff;margin-bottom:16px;font-weight:600}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--t-dm);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--accent)}
.footer-note{font-size:14px;line-height:2;color:var(--t-dm)}
.footer-bar{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding:22px 0 30px;
  border-top:1px solid var(--line-d);
  font-size:12px;color:var(--t-dm);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .52s var(--ease),transform .52s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .hero-inner{grid-template-columns:minmax(0,1fr);gap:36px}
  .stage{grid-template-columns:minmax(0,1fr);gap:36px}
  .sticky-side{position:static;flex-direction:row;flex-wrap:wrap}
  .sticky-side > *{flex:1 1 300px}
  .flow-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .nav-main{display:none}
  .nav-toggle{display:block}
  .header-actions .btn{display:none}
  .trust-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .trust-item:nth-child(odd)::before{display:none}
  .trust-item:nth-child(3),.trust-item:nth-child(4){border-top:1px solid var(--line-d)}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:48px 0}
}
@media (max-width:768px){
  body{font-size:16px}
  .container{width:min(1280px,100% - 36px)}
  .section{padding:64px 0}
  .section.tight{padding:52px 0}
  .page-hero{padding:120px 0 60px}
  .num-item{grid-template-columns:64px minmax(0,1fr);gap:16px;padding:22px 16px}
  .num-index{font-size:32px}
  .num-body h3{font-size:18px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .related-card img{width:92px;height:72px}
  .hero-metrics{gap:18px}
  .metric + .metric{padding-left:18px}
  .hero-actions .btn{flex:1 1 auto}
}
@media (max-width:560px){
  .session{display:none}
  .trust-grid{grid-template-columns:minmax(0,1fr)}
  .trust-item + .trust-item::before{display:none}
  .trust-item{border-top:1px solid var(--line-d)}
  .trust-item:first-child{border-top:0}
  .flow-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}