/* roulang page: index */
:root{
  --brand:#E4552B;
  --brand-deep:#C23F17;
  --ink-green:#0F3D34;
  --green-soft:#E6EFEA;
  --lime:#C8F04B;
  --bg:#FBF8F3;
  --bg-2:#F3EEE5;
  --white:#FFFFFF;
  --text:#16211E;
  --text-2:#5A6660;
  --text-3:#8C948F;
  --line:#E4DCD0;
  --danger:#C0392B;
  --ok:#2E7D5B;
  --grad-brand:linear-gradient(120deg,#E4552B 0%,#F0902F 100%);
  --grad-ink:linear-gradient(150deg,#12463B 0%,#0A2A24 100%);
  --sh-1:0 1px 2px rgba(15,61,52,.05);
  --sh-2:0 10px 24px -12px rgba(15,61,52,.18);
  --sh-3:0 24px 48px -24px rgba(15,61,52,.30);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --header-h:76px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
::selection{background:rgba(228,85,43,.2);color:var(--text)}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(251,248,243,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:background .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.site-header.is-scrolled{background:#fff;box-shadow:var(--sh-2);border-bottom-color:var(--line)}
.header-inner{display:flex;align-items:center;gap:28px;height:var(--header-h);transition:height .2s var(--ease)}
.site-header.is-scrolled .header-inner{height:64px}
.logo{display:inline-flex;align-items:center;gap:11px;font-weight:800;font-size:1.15rem;color:var(--ink-green);letter-spacing:-.01em;flex:none}
.logo-mark{width:32px;height:32px;border-radius:10px;background:var(--grad-brand);display:grid;place-items:center;transition:transform .25s var(--ease)}
.logo-mark svg{width:18px;height:18px;stroke:#fff;fill:none;stroke-width:2.1;stroke-linecap:round;stroke-linejoin:round}
.logo:hover .logo-mark{transform:rotate(6deg)}
.main-nav{display:flex;align-items:center}
.main-nav ul{display:flex;align-items:center;gap:4px}
.main-nav a{display:block;padding:8px 15px;border-radius:999px;font-size:.95rem;font-weight:500;color:var(--text-2);transition:color .2s var(--ease),background .2s var(--ease)}
.main-nav a:hover{color:var(--brand);background:rgba(228,85,43,.07)}
.main-nav a.active{color:var(--brand);font-weight:700;background:rgba(228,85,43,.1)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:18px}
.link-quiet{font-size:.92rem;color:var(--text-2);font-weight:500;transition:color .2s var(--ease)}
.link-quiet:hover{color:var(--brand)}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;align-items:center;justify-content:center;flex-direction:column;gap:5px;border:1px solid var(--line);background:#fff}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink-green);transition:transform .25s var(--ease),opacity .2s var(--ease)}
.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;border-radius:999px;font-size:.95rem;font-weight:600;border:1.5px solid transparent;transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),filter .2s var(--ease);min-height:44px}
.btn svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .2s var(--ease)}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh-2);filter:brightness(1.06)}
.btn-primary:hover svg{transform:translateX(2px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--ink-green);color:var(--ink-green)}
.btn-ghost:hover{background:var(--ink-green);color:#fff;transform:translateY(-2px)}
.btn-sm{padding:10px 20px;font-size:.9rem;min-height:40px}
.btn-link{display:inline-flex;align-items:center;gap:7px;color:var(--brand);font-weight:600;font-size:.95rem}
.btn-link svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .2s var(--ease)}
.btn-link:hover svg{transform:translateX(4px)}
.btn-link:hover{text-decoration:underline;text-underline-offset:4px}

/* ---------- eyebrow / section ---------- */
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:600;letter-spacing:.12em;color:var(--brand);margin-bottom:18px}
.eyebrow::before{content:"";width:18px;height:4px;border-radius:999px;background:var(--grad-brand)}
.section{padding:100px 0}
.section-alt{background:var(--bg-2)}
.section-head{max-width:640px;margin-bottom:40px}
.section-head h2{font-size:clamp(1.7rem,2.8vw,2.4rem);line-height:1.25;font-weight:700;letter-spacing:-.01em;color:var(--ink-green)}
.section-sub{margin-top:14px;color:var(--text-2);max-width:32em}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head-row .section-head{margin-bottom:0}
.badge{display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;font-size:13px;font-weight:600;line-height:1.7}
.badge-soft{background:var(--green-soft);color:var(--ink-green)}
.badge-float{position:absolute;left:14px;top:14px;background:rgba(15,61,52,.72);color:#fff;backdrop-filter:blur(4px)}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:76px 0 92px;background:var(--bg)}
.hero::before{content:"";position:absolute;top:-200px;right:-140px;width:600px;height:600px;border-radius:50%;background:radial-gradient(circle,rgba(228,85,43,.08),rgba(228,85,43,0) 70%);pointer-events:none}
.hero-inner{position:relative;display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:center}
.hero-copy{grid-column:span 7}
.hero-figure{grid-column:span 5;position:relative}
.hero h1{font-size:clamp(2.1rem,4.2vw,3.35rem);line-height:1.16;font-weight:800;letter-spacing:-.02em;color:var(--ink-green);max-width:12em}
.hero h1 .hl{color:var(--brand)}
.hero-sub{margin-top:22px;font-size:1.05rem;line-height:1.85;color:var(--text-2);max-width:30em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-stats{display:flex;flex-wrap:wrap;margin-top:42px}
.hero-stats li{padding:0 26px;border-left:1px solid var(--line)}
.hero-stats li:first-child{padding-left:0;border-left:0}
.hero-stats strong{display:block;font-size:1.55rem;font-weight:800;color:var(--ink-green);line-height:1.3;font-variant-numeric:tabular-nums}
.hero-stats span{font-size:.82rem;color:var(--text-3);line-height:1.6}
.hero-figure img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:28px;box-shadow:var(--sh-3);background:var(--bg-2)}
.hero-data-card{position:absolute;right:14px;bottom:14px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:16px 20px;box-shadow:var(--sh-3);min-width:150px}
.hero-data-num{font-size:1.9rem;font-weight:800;line-height:1.1;color:var(--ink-green);font-variant-numeric:tabular-nums}
.hero-data-num span{font-size:1rem;font-weight:700;color:var(--brand);margin-left:2px}
.hero-data-card p{margin-top:4px;font-size:.8rem;color:var(--text-3);line-height:1.5}

/* ---------- bento ---------- */
.bento{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.bento-feature{
  grid-column:span 2;grid-row:span 2;
  position:relative;overflow:hidden;
  display:flex;flex-direction:column;justify-content:space-between;gap:28px;
  background:var(--grad-ink);color:#fff;border-radius:var(--r-lg);padding:36px;min-height:360px;
}
.bento-feature::after{content:"";position:absolute;width:280px;height:280px;border-radius:50%;right:-90px;bottom:-120px;background:radial-gradient(circle,rgba(200,240,75,.18),transparent 70%);pointer-events:none}
.bento-feature .icon-lg{width:48px;height:48px;border-radius:14px;background:rgba(255,255,255,.12);display:grid;place-items:center}
.bento-feature .icon-lg svg{width:24px;height:24px;stroke:var(--lime);fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.bento-feature h3{font-size:1.4rem;font-weight:700;color:#fff;margin-top:22px;line-height:1.4}
.bento-feature p{margin-top:12px;color:rgba(255,255,255,.74);font-size:.95rem;max-width:26em}
.bento-feature .btn-link{color:var(--lime);margin-top:20px}
.bento-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;box-shadow:var(--sh-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.bento-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(228,85,43,.35)}
.bento-card .icon-md{width:40px;height:40px;border-radius:12px;background:var(--green-soft);display:grid;place-items:center;color:var(--ink-green)}
.bento-card .icon-md svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.bento-card h3{font-size:1.14rem;font-weight:600;margin-top:18px;color:var(--ink-green)}
.bento-card p{margin-top:8px;font-size:.9rem;color:var(--text-2);line-height:1.75}
.bento-strip{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:18px 20px;box-shadow:var(--sh-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.bento-strip:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(228,85,43,.35)}
.bento-strip .icon-sq{width:40px;height:40px;flex:none;border-radius:12px;background:var(--green-soft);display:grid;place-items:center;color:var(--ink-green)}
.bento-strip .icon-sq svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.bento-strip h4{font-size:.98rem;font-weight:600;color:var(--ink-green);line-height:1.4}
.bento-strip p{font-size:.82rem;color:var(--text-3);line-height:1.6;margin-top:2px}

/* ---------- stats band ---------- */
.stats-band{background:var(--grad-ink);color:#fff;padding:76px 0}
.stats-inner{display:grid;grid-template-columns:1fr 1.45fr;gap:56px;align-items:center}
.stats-band h2{color:#fff;font-size:clamp(1.55rem,2.4vw,2.1rem);line-height:1.3;font-weight:700}
.stats-band .stats-lead{margin-top:14px;color:rgba(255,255,255,.72);max-width:26em;font-size:.95rem}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stats-grid li{padding:0 22px;border-left:1px solid rgba(255,255,255,.16)}
.stats-grid li:first-child{border-left:0;padding-left:0}
.stats-grid .num{font-size:clamp(1.9rem,3vw,2.6rem);font-weight:800;line-height:1.15;color:var(--lime);font-variant-numeric:tabular-nums}
.stats-grid .unit{font-size:1rem;font-weight:700;color:var(--lime);margin-left:2px}
.stats-grid em{display:block;font-style:normal;font-size:.82rem;color:rgba(255,255,255,.66);margin-top:8px;line-height:1.6}

/* ---------- cases ---------- */
.case-nav{display:flex;gap:10px;flex:none}
.case-btn{width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid var(--line);box-shadow:var(--sh-2);display:grid;place-items:center;color:var(--ink-green);transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease)}
.case-btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.case-btn:hover{background:var(--ink-green);color:#fff;border-color:var(--ink-green);transform:translateY(-2px);box-shadow:var(--sh-3)}
.cases-track{display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 4px 12px;scrollbar-width:none;-ms-overflow-style:none}
.cases-track::-webkit-scrollbar{display:none}
.case-card{flex:0 0 calc((100% - 48px)/2.6);scroll-snap-align:start;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(228,85,43,.35)}
.case-img{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-2)}
.case-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.case-card:hover .case-img img{transform:scale(1.04)}
.case-body{padding:20px 22px 22px}
.case-body h3{font-size:1.05rem;font-weight:600;line-height:1.5;color:var(--ink-green);transition:color .2s var(--ease)}
.case-card:hover .case-body h3{color:var(--brand)}
.case-meta{margin-top:8px;font-size:.82rem;color:var(--text-3);font-variant-numeric:tabular-nums}

/* ---------- solutions ---------- */
.solution-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.solution-row + .solution-row{margin-top:76px}
.solution-row.reverse .solution-media{order:2}
.solution-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:20px;box-shadow:var(--sh-2);background:var(--bg-2)}
.solution-body h3{font-size:clamp(1.25rem,1.9vw,1.5rem);font-weight:700;color:var(--ink-green);line-height:1.4}
.solution-body > p{margin-top:12px;color:var(--text-2);font-size:.95rem;max-width:32em}
.solution-list{margin-top:20px}
.solution-list li{display:flex;gap:12px;align-items:flex-start;margin-top:12px;font-size:.95rem;color:var(--text-2)}
.check{width:22px;height:22px;flex:none;border-radius:50%;background:var(--green-soft);color:var(--ink-green);display:grid;place-items:center;margin-top:5px}
.check svg{width:12px;height:12px;stroke:currentColor;fill:none;stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round}
.solution-body .btn-link{margin-top:22px}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.news-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:var(--sh-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(228,85,43,.35)}
.news-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-2)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-card-body{display:flex;flex-direction:column;flex:1;padding:18px 20px 20px}
.news-card-body h3{font-size:1rem;font-weight:600;line-height:1.55;margin-top:10px;color:var(--ink-green);transition:color .2s var(--ease);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card:hover h3{color:var(--brand)}
.news-desc{margin-top:8px;font-size:.85rem;color:var(--text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-time{margin-top:14px;font-size:.78rem;color:var(--text-3);font-variant-numeric:tabular-nums}
.news-more{margin-top:14px;padding-top:14px;border-top:1px solid var(--line);font-size:.85rem;color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.news-more svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .2s var(--ease)}
.news-card:hover .news-more svg{transform:translateX(3px)}

.news-feature{grid-column:span 2;grid-row:span 2;flex-direction:row;border-radius:var(--r-lg)}
.news-feature .news-thumb{width:42%;flex:none;aspect-ratio:auto}
.news-feature .news-card-body{padding:28px}
.news-feature h3{font-size:1.24rem;line-height:1.5;-webkit-line-clamp:2}
.news-feature .news-desc{font-size:.92rem;-webkit-line-clamp:3;margin-top:12px}
.news-feature .news-more{margin-top:auto}

.news-empty{grid-column:1/-1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;min-height:220px;border:2px dashed var(--line);border-radius:var(--r-lg);color:var(--text-3);text-align:center;background:rgba(255,255,255,.5)}
.news-empty svg{width:40px;height:40px;stroke:var(--text-3);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.news-empty p{font-size:.95rem}

/* ---------- faq ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{position:relative;background:#fff;border:1px solid var(--line);border-radius:16px;margin-bottom:14px;overflow:hidden;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.faq-item.open{border-left:3px solid var(--brand);box-shadow:var(--sh-2)}
.faq-item.open::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad-brand)}
.faq-q{display:flex;align-items:center;gap:16px;width:100%;padding:20px 22px;text-align:left}
.faq-num{font-size:.88rem;font-weight:700;color:var(--text-3);font-variant-numeric:tabular-nums;flex:none;width:22px}
.faq-q-text{flex:1;font-size:17px;font-weight:600;line-height:1.6;color:var(--ink-green)}
.faq-icon{width:28px;height:28px;flex:none;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;color:var(--text-2);transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease)}
.faq-icon svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round}
.faq-item.open .faq-icon{background:var(--brand);border-color:var(--brand);color:#fff}
.faq-item.open .faq-icon .v-line{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
.faq-a-inner{padding:0 22px 22px 60px;font-size:15px;line-height:1.85;color:var(--text-2)}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:start}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:32px;box-shadow:var(--sh-2)}
.form-card h3{font-size:1.2rem;font-weight:700;color:var(--ink-green)}
.form-card .form-tip{margin-top:8px;font-size:.88rem;color:var(--text-3)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px}
.field{margin-bottom:4px}
.field.full{grid-column:1/-1}
.field label{display:block;font-size:.88rem;font-weight:600;color:var(--text);margin-bottom:8px}
.field input,.field select,.field textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:var(--r-sm);background:#fff;font-size:.94rem;color:var(--text);transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease)}
.field textarea{resize:vertical;min-height:110px;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:hover,.field select:hover,.field textarea:hover{border-color:#CFC5B5}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(228,85,43,.14)}
.form-actions{margin-top:20px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.form-status{font-size:.86rem;color:var(--ok)}
.info-card{background:var(--ink-green);color:#fff;border-radius:var(--r-lg);padding:32px;position:relative;overflow:hidden}
.info-card::after{content:"";position:absolute;width:220px;height:220px;border-radius:50%;right:-80px;top:-90px;background:radial-gradient(circle,rgba(200,240,75,.16),transparent 70%)}
.info-card h3{font-size:1.15rem;font-weight:700;position:relative}
.info-card .info-lead{margin-top:10px;font-size:.88rem;color:rgba(255,255,255,.7);position:relative}
.info-list{margin-top:26px;position:relative}
.info-list li{display:flex;gap:12px;align-items:flex-start;font-size:.9rem;color:rgba(255,255,255,.86);padding:12px 0;border-bottom:1px solid rgba(255,255,255,.12)}
.info-list li:last-child{border-bottom:0}
.info-list svg{width:20px;height:20px;flex:none;stroke:var(--lime);fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;margin-top:2px}
.info-card .btn{margin-top:24px;width:100%;position:relative;background:#fff;color:var(--ink-green);box-shadow:var(--sh-2)}
.info-card .btn:hover{background:var(--lime);transform:translateY(-2px)}
.info-hour{margin-top:14px;font-size:.8rem;color:rgba(255,255,255,.6);position:relative}

/* ---------- footer ---------- */
.site-footer{background:var(--grad-ink);color:#fff;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px;padding-bottom:48px}
.footer-brand .logo{color:#fff}
.footer-brand .logo-mark{background:var(--grad-brand)}
.footer-desc{margin-top:16px;font-size:.88rem;color:rgba(255,255,255,.62);line-height:1.8;max-width:22em}
.footer-contact-mini{margin-top:20px;display:flex;flex-direction:column;gap:10px}
.footer-contact-mini a{display:inline-flex;align-items:center;gap:9px;font-size:.88rem;color:rgba(255,255,255,.72);transition:color .2s var(--ease)}
.footer-contact-mini a:hover{color:var(--lime)}
.footer-contact-mini svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.footer-col h4{font-size:.95rem;font-weight:700;margin-bottom:18px;color:#fff}
.footer-col a{display:block;padding:6px 0;font-size:.88rem;color:rgba(255,255,255,.62);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--lime);text-decoration:underline;text-underline-offset:3px}
.footer-info li{display:flex;gap:10px;align-items:flex-start;font-size:.88rem;color:rgba(255,255,255,.62);padding:6px 0;line-height:1.7}
.footer-info svg{width:18px;height:18px;flex:none;stroke:var(--lime);fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;margin-top:3px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:22px 0;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;font-size:.82rem;color:rgba(255,255,255,.62)}
.footer-bottom .fb-links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom a{color:rgba(255,255,255,.62);transition:color .2s var(--ease)}
.footer-bottom a:hover{color:var(--lime);text-decoration:underline;text-underline-offset:3px}

/* ---------- drawer ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(10,42,36,.5);z-index:110;opacity:0;pointer-events:none;transition:opacity .3s var(--ease)}
.drawer-mask.open{opacity:1;pointer-events:auto}
.drawer{position:fixed;top:0;right:0;height:100%;width:86vw;max-width:360px;z-index:120;background:var(--grad-ink);color:#fff;transform:translateX(100%);transition:transform .32s var(--ease);display:flex;flex-direction:column;padding:24px}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:20px;border-bottom:1px solid rgba(255,255,255,.14)}
.drawer-head .logo{color:#fff}
.drawer-close{width:40px;height:40px;border-radius:50%;border:1px solid rgba(255,255,255,.24);display:grid;place-items:center;color:#fff}
.drawer-close svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round}
.drawer-nav{margin-top:12px;flex:1;overflow-y:auto}
.drawer-nav a{display:block;padding:16px 4px;font-size:19px;line-height:36px;color:#fff;border-bottom:1px solid rgba(255,255,255,.1)}
.drawer-nav a.active{color:var(--lime)}
.drawer-actions{display:flex;flex-direction:column;gap:12px;padding-top:20px}
.drawer-actions .btn-primary{width:100%}
.btn-outline-light{border:1.5px solid rgba(255,255,255,.42);color:#fff;width:100%}
.btn-outline-light:hover{background:rgba(255,255,255,.12)}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{max-width:1120px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .main-nav{display:none}
  .header-actions .link-quiet{display:none}
  .nav-toggle{display:flex}
  .section{padding:72px 0}
  .hero{padding:56px 0 68px}
  .hero-inner{grid-template-columns:1fr}
  .hero-copy,.hero-figure{grid-column:1/-1}
  .hero h1{max-width:none}
  .hero-figure{margin-top:36px}
  .bento{grid-template-columns:repeat(2,1fr)}
  .bento-feature{grid-column:span 2;grid-row:auto;min-height:auto;padding:32px}
  .bento-strip{grid-column:span 1}
  .stats-inner{grid-template-columns:1fr;gap:36px}
  .stats-grid{grid-template-columns:repeat(2,1fr);row-gap:30px}
  .stats-grid li:nth-child(3){border-left:0;padding-left:0}
  .stats-grid li{padding:0 24px}
  .case-nav{display:none}
  .case-card{flex:0 0 calc((100% - 24px)/1.6)}
  .solution-row{grid-template-columns:1fr;gap:28px}
  .solution-row.reverse .solution-media{order:0}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .news-feature{grid-column:span 2;grid-row:auto;flex-direction:column}
  .news-feature .news-thumb{width:100%;aspect-ratio:16/9}
  .news-feature .news-card-body{padding:22px}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .section-head-row{align-items:flex-start}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .hero{padding:40px 0 56px}
  .hero-stats{margin-top:32px}
  .hero-stats li{padding:0 16px}
  .hero-stats strong{font-size:1.3rem}
  .hero h1{font-size:clamp(1.85rem,7vw,2.4rem)}
  .hero-data-card{right:10px;bottom:10px;padding:12px 16px;min-width:130px}
  .hero-data-num{font-size:1.5rem}
  .hero-figure img{aspect-ratio:16/12;border-radius:22px}
  .bento{grid-template-columns:1fr}
  .bento-feature,.bento-strip{grid-column:span 1}
  .case-card{flex:0 0 86%}
  .news-grid{grid-template-columns:1fr}
  .news-feature{grid-column:span 1}
  .form-grid{grid-template-columns:1fr}
  .form-actions .btn{width:100%}
  .faq-q{padding:16px 16px;gap:12px}
  .faq-q-text{font-size:15.5px}
  .faq-a-inner{padding:0 16px 18px 46px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{justify-content:center;text-align:center}
  .solution-row + .solution-row{margin-top:48px}
}
@media (max-width:480px){
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .stats-grid{grid-template-columns:1fr 1fr;row-gap:26px}
  .stats-grid li{padding:0 14px}
  .stats-grid .num{font-size:1.7rem}
}

/* roulang page: article */
:root{
  --brand:#E4552B;
  --brand-deep:#C23F17;
  --ink-green:#0F3D34;
  --green-soft:#E6EFEA;
  --lime:#C8F04B;
  --bg:#FBF8F3;
  --bg-2:#F3EEE5;
  --card:#FFFFFF;
  --text:#16211E;
  --text-2:#5A6660;
  --text-3:#8C948F;
  --line:#E4DCD0;
  --danger:#C0392B;
  --ok:#2E7D5B;
  --grad-brand:linear-gradient(120deg,#E4552B 0%,#F0902F 100%);
  --grad-ink:linear-gradient(150deg,#12463B 0%,#0A2A24 100%);
  --sh-1:0 1px 2px rgba(15,61,52,.05);
  --sh-2:0 10px 24px -12px rgba(15,61,52,.18);
  --sh-3:0 24px 48px -24px rgba(15,61,52,.30);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:system-ui,-apple-system,"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;line-height:1.28;letter-spacing:-.01em}
p{margin:0 0 1.4em}
ul,ol{margin:0 0 1.4em;padding-left:1.4em}
::selection{background:rgba(228,85,43,.2)}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.container{max-width:1200px;margin:0 auto;padding:0 32px;width:100%}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink-green);color:#fff;padding:10px 18px;border-radius:0 0 12px 0;z-index:200}
.skip-link:focus{left:0}

/* ---------- 阅读进度 ---------- */
.progress-bar{position:fixed;top:0;left:0;height:3px;width:0;background:var(--grad-brand);z-index:200;transition:width .12s linear}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(251,248,243,.92);
  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)}
.header-inner{display:flex;align-items:center;gap:24px;height:76px;transition:height .2s var(--ease)}
.site-header.is-scrolled .header-inner{height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:32px;height:32px;border-radius:10px;background:var(--grad-brand);
  display:grid;place-items:center;flex-shrink:0;
  transition:transform .2s var(--ease);
}
.logo-mark svg{width:19px;height:19px;fill:none;stroke:#fff;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.logo:hover .logo-mark{transform:rotate(6deg)}
.logo-text{font-size:19px;font-weight:800;color:var(--ink-green);letter-spacing:-.02em}
.main-nav{margin-left:12px}
.main-nav ul{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0}
.main-nav a{
  position:relative;display:block;padding:9px 14px;border-radius:999px;
  font-size:15px;font-weight:500;color:var(--text-2);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.main-nav a:hover{color:var(--ink-green);background:var(--green-soft)}
.main-nav a.active{color:var(--brand)}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:1px;height:3px;
  border-radius:999px;background:var(--brand);
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:18px}
.link-quiet{font-size:15px;font-weight:500;color:var(--text-2);transition:color .2s var(--ease)}
.link-quiet:hover{color:var(--brand)}
.nav-toggle{
  display:none;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  width:44px;height:44px;padding:0;border:1px solid var(--line);border-radius:12px;
  background:#fff;cursor:pointer;transition:border-color .2s var(--ease);
}
.nav-toggle:hover{border-color:rgba(228,85,43,.45)}
.nav-toggle span{width:18px;height:2px;border-radius:2px;background:var(--ink-green);transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* 移动抽屉 */
.nav-overlay{
  position:fixed;inset:0;background:rgba(10,42,36,.5);opacity:0;pointer-events:none;
  transition:opacity .3s var(--ease);z-index:130;
}
.nav-overlay.is-open{opacity:1;pointer-events:auto}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:86vw;max-width:360px;
  background:var(--grad-ink);z-index:140;display:none;flex-direction:column;
  padding:24px 22px 28px;overflow-y:auto;transform:translateX(101%);
  transition:transform .3s var(--ease);
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid rgba(255,255,255,.14)}
.drawer-head .logo-text{color:#fff}
.drawer-nav{list-style:none;margin:18px 0 0;padding:0;display:flex;flex-direction:column;gap:2px}
.drawer-nav a{
  display:block;padding:14px 12px;border-radius:12px;color:rgba(255,255,255,.9);
  font-size:18px;font-weight:500;transition:background .2s var(--ease),color .2s var(--ease);
}
.drawer-nav a:hover{background:rgba(255,255,255,.08);color:#fff}
.drawer-actions{margin-top:auto;padding-top:24px;display:flex;flex-direction:column;gap:12px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;border:0;cursor:pointer;
  font-size:15px;font-weight:600;line-height:1.2;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),filter .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh-2);filter:brightness(1.06)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border:1.5px solid var(--ink-green);color:var(--ink-green)}
.btn-ghost:hover{background:var(--ink-green);color:#fff}
.btn-sm{padding:10px 20px;font-size:14px}
.ghost-light{border-color:rgba(255,255,255,.55);color:#fff}
.ghost-light:hover{background:#fff;color:var(--ink-green);border-color:#fff}

/* ---------- 面包屑 ---------- */
main{padding-top:6px}
.breadcrumb{padding:18px 0 0}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;margin:0;padding:0;font-size:13px;color:var(--text-3)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--text-3);opacity:.7}
.breadcrumb a{color:var(--text-2);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb [aria-current="page"]{color:var(--text-3)}

/* ---------- 文章头部 ---------- */
.article-head{max-width:820px;padding:28px 0 10px}
.badge-cat{
  display:inline-block;background:var(--green-soft);color:var(--ink-green);
  padding:5px 14px;border-radius:999px;font-size:13px;font-weight:600;letter-spacing:.01em;
}
.article-head h1{
  margin:18px 0 18px;font-size:clamp(1.8rem,3.2vw,2.6rem);font-weight:800;
  line-height:1.34;letter-spacing:-.02em;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--text-3)}
.article-meta .dot{width:1px;height:12px;background:var(--line);display:inline-block}
.article-meta time{font-variant-numeric:tabular-nums}

/* ---------- 正文 ---------- */
.article-body{
  max-width:760px;margin:40px auto 0;
  font-size:16.5px;line-height:1.95;color:var(--text);
  word-break:break-word;overflow-wrap:anywhere;
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.4em;max-width:34em}
.article-body h2{
  position:relative;margin:44px 0 18px;padding-left:16px;
  font-size:clamp(1.25rem,2vw,1.45rem);font-weight:700;line-height:1.45;color:var(--ink-green);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.32em;width:4px;height:18px;border-radius:999px;background:var(--brand);
}
.article-body h3{margin:30px 0 12px;font-size:17px;font-weight:600;color:var(--ink-green)}
.article-body h4{margin:24px 0 10px;font-size:16px;font-weight:600}
.article-body ul,.article-body ol{padding-left:1.4em;margin:0 0 1.4em}
.article-body li{margin-bottom:8px}
.article-body li::marker{color:var(--brand)}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1.5px}
.article-body a:hover{color:var(--brand-deep)}
.article-body strong{font-weight:700;color:var(--ink-green)}
.article-body blockquote{
  margin:28px 0;padding:18px 22px;background:var(--green-soft);
  border-left:4px solid var(--brand);border-radius:0 12px 12px 0;
  color:var(--ink-green);font-size:15.5px;
}
.article-body blockquote p{max-width:none}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{width:100%;height:auto;border-radius:16px;margin:24px 0 10px}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-bottom:24px}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
  border-radius:12px;overflow:hidden;box-shadow:var(--sh-1);
}
.article-body thead{background:var(--ink-green);color:#fff}
.article-body th,.article-body td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line)}
.article-body th{font-weight:600}
.article-body tbody tr:nth-child(even){background:#FAF7F2}
.article-body tbody tr:last-child td{border-bottom:0}
.article-body code{background:var(--bg-2);padding:2px 6px;border-radius:6px;font-size:.92em}
.article-body pre{background:var(--ink-green);color:#EAF2EE;padding:18px 20px;border-radius:12px;overflow-x:auto;margin:24px 0}
.article-body pre code{background:none;color:inherit;padding:0}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}

/* 空态 */
.article-empty{
  border:2px dashed var(--line);border-radius:var(--r-lg);background:var(--card);
  padding:56px 28px;text-align:center;
}
.article-empty svg{width:44px;height:44px;margin:0 auto 16px;fill:none;stroke:var(--text-3);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.article-empty h2{margin:0 0 10px;font-size:1.25rem;font-weight:700;color:var(--ink-green)}
.article-empty h2::before{display:none}
.article-empty p{margin:0 auto 22px;max-width:34em;color:var(--text-2);font-size:15px}

/* ---------- 文末标签与操作 ---------- */
.article-foot{
  max-width:760px;margin:48px auto 0;padding-top:24px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-block;padding:6px 14px;border-radius:999px;background:var(--card);
  border:1px solid var(--line);font-size:13px;color:var(--text-2);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.tag:hover{color:var(--brand);border-color:rgba(228,85,43,.4);background:#fff}
.foot-actions{display:flex;gap:10px;flex-wrap:wrap}

/* ---------- 相关内容 ---------- */
.related{padding:80px 0 0}
.related h2{font-size:clamp(1.4rem,2.4vw,1.9rem);font-weight:700;color:var(--ink-green);margin-bottom:28px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.rel-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(228,85,43,.35)}
.rel-media{position:relative;display:block;aspect-ratio:16/10;background:var(--bg-2);overflow:hidden}
.rel-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.rel-card:hover .rel-media img{transform:scale(1.04)}
.badge-float{
  position:absolute;top:12px;left:12px;background:rgba(15,61,52,.72);color:#fff;
  font-size:12px;font-weight:600;padding:4px 12px;border-radius:999px;backdrop-filter:blur(2px);
}
.rel-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:12px;flex:1}
.rel-body h3{font-size:16px;font-weight:600;line-height:1.6;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-body h3 a{transition:color .2s var(--ease)}
.rel-card:hover .rel-body h3 a{color:var(--brand)}
.rel-body time{margin-top:auto;font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums}

/* ---------- CTA ---------- */
.cta-band{padding:80px 0 0}
.cta-inner{
  background:var(--grad-brand);border-radius:var(--r-lg);padding:40px 44px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  box-shadow:var(--sh-2);color:#fff;
}
.cta-inner h2{font-size:clamp(1.3rem,2.2vw,1.75rem);color:#fff;font-weight:700;margin-bottom:8px}
.cta-inner p{margin:0;font-size:15px;color:rgba(255,255,255,.9)}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-actions .btn-primary{background:#fff;color:var(--ink-green);box-shadow:none}
.cta-actions .btn-primary:hover{background:#fff;color:var(--ink-green);filter:none;box-shadow:var(--sh-2)}
.cta-actions .btn-ghost{border-color:rgba(255,255,255,.7);color:#fff}
.cta-actions .btn-ghost:hover{background:#fff;color:var(--ink-green);border-color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--grad-ink);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:96px;position:relative}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:rgba(255,255,255,.14)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.35fr;gap:48px;padding-bottom:48px}
.footer-brand .logo-text{color:#fff}
.footer-desc{margin:16px 0 18px;font-size:14px;line-height:1.8;max-width:26em;color:rgba(255,255,255,.62)}
.footer-contact-mini{display:flex;flex-direction:column;gap:10px}
.footer-contact-mini a{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.72);transition:color .2s var(--ease)}
.footer-contact-mini a:hover{color:var(--lime)}
.footer-contact-mini svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
.footer-col h4{font-size:14px;color:#fff;margin:0 0 16px;font-weight:700}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.62);padding:6px 0;transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--lime);text-decoration:underline;text-underline-offset:3px}
.footer-info{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px}
.footer-info li{display:flex;gap:10px;font-size:14px;line-height:1.7;color:rgba(255,255,255,.62)}
.footer-info svg{width:18px;height:18px;flex-shrink:0;margin-top:3px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}
.fb-links{display:flex;gap:20px;flex-wrap:wrap}
.fb-links a{color:rgba(255,255,255,.62);transition:color .2s var(--ease)}
.fb-links a:hover{color:var(--lime);text-decoration:underline;text-underline-offset:3px}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:1120px}
}
@media (max-width:1024px){
  .container{padding:0 24px}
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .nav-drawer{display:flex}
  .header-inner{height:68px;gap:16px}
  .site-header.is-scrolled .header-inner{height:60px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .article-body{font-size:16px}
  .cta-inner{padding:32px 28px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .header-actions .link-quiet{display:none}
  .header-actions .btn-sm{padding:9px 16px;font-size:13px}
  .article-head{padding-top:22px}
  .article-head h1{margin:14px 0 14px}
  .article-body{margin-top:28px;font-size:15.5px;line-height:1.9}
  .article-body p{max-width:none}
  .article-body h2{margin-top:34px}
  .related{padding-top:56px}
  .related-grid{grid-template-columns:1fr}
  .cta-band{padding-top:56px}
  .cta-inner{padding:26px 22px;border-radius:18px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .site-footer{margin-top:64px;padding-top:48px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{justify-content:center;text-align:center}
  .article-foot{flex-direction:column;align-items:flex-start}
  .foot-actions{width:100%}
  .foot-actions .btn{flex:1}
}
@media (max-width:480px){
  .logo-text{font-size:17px}
  .article-meta{gap:9px;font-size:12px}
  .rel-body{padding:16px 16px 20px}
}

/* roulang page: category1 */
:root{
  --brand:#E4552B;
  --brand-deep:#C23F17;
  --ink-green:#0F3D34;
  --green-soft:#E6EFEA;
  --lime:#C8F04B;
  --bg:#FBF8F3;
  --bg-2:#F3EEE5;
  --card:#FFFFFF;
  --text:#16211E;
  --text-2:#5A6660;
  --text-3:#8C948F;
  --line:#E4DCD0;
  --danger:#C0392B;
  --ok:#2E7D5B;
  --grad-brand:linear-gradient(120deg,#E4552B 0%,#F0902F 100%);
  --grad-ink:linear-gradient(150deg,#12463B 0%,#0A2A24 100%);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
  --sh-1:0 1px 2px rgba(15,61,52,.05);
  --sh-2:0 10px 24px -12px rgba(15,61,52,.18);
  --sh-3:0 24px 48px -24px rgba(15,61,52,.30);
  --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:system-ui,-apple-system,"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4,p{margin:0}
svg{display:block}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
::selection{background:rgba(228,85,43,.2)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-2)}
.header-inner{
  display:flex;align-items:center;gap:32px;height:76px;
  transition:height .2s var(--ease);
}
.site-header.is-scrolled .header-inner{height:64px}
.logo{display:inline-flex;align-items:center;gap:12px;flex:none}
.logo-mark{
  width:32px;height:32px;border-radius:10px;background:var(--grad-brand);
  display:grid;place-items:center;color:#fff;
  transition:transform .2s var(--ease);
}
.logo-mark svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.logo:hover .logo-mark{transform:rotate(6deg)}
.logo-text{font-size:1.18rem;font-weight:800;letter-spacing:-.01em;color:var(--ink-green)}
.main-nav{margin-left:auto}
.main-nav ul{display:flex;list-style:none;gap:6px}
.main-nav a{
  position:relative;display:inline-block;padding:8px 14px;border-radius:999px;
  font-size:.95rem;font-weight:600;color:var(--text-2);
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.main-nav a:hover{color:var(--ink-green);background:var(--green-soft)}
.main-nav a.active{color:var(--brand)}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:3px;
  border-radius:999px;background:var(--grad-brand);
}
.header-actions{display:flex;align-items:center;gap:18px;flex:none}
.link-quiet{font-size:.92rem;font-weight:600;color:var(--text-2);transition:color .2s var(--ease)}
.link-quiet:hover{color:var(--brand)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;min-height:44px;border-radius:999px;border:1.5px solid transparent;
  font-size:.95rem;font-weight:600;cursor:pointer;
  transition:transform .2s var(--ease),background-color .2s var(--ease),
             box-shadow .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),filter .2s var(--ease);
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh-2);filter:brightness(1.06)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-ghost{background:transparent;border-color:var(--ink-green);color:var(--ink-green)}
.btn-ghost:hover{background:var(--ink-green);color:#fff;transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:10px 20px;min-height:40px;font-size:.88rem}
.btn-light{background:#fff;color:var(--ink-green)}
.btn-light:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 移动端抽屉 ---------- */
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;align-items:center;justify-content:center;cursor:pointer;flex:none;
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--ink-green);transition:background .2s var(--ease)}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-green);
  transition:transform .2s var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}

.drawer{position:fixed;inset:0;z-index:90;pointer-events:none}
.drawer-mask{position:absolute;inset:0;background:rgba(10,42,36,.5);opacity:0;transition:opacity .25s var(--ease)}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:86vw;max-width:380px;
  background:var(--grad-ink);color:#fff;display:flex;flex-direction:column;
  padding:24px;transform:translateX(100%);transition:transform .3s var(--ease);
}
.drawer.is-open{pointer-events:auto}
.drawer.is-open .drawer-mask{opacity:1}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.drawer-close{
  width:40px;height:40px;border-radius:var(--r-sm);border:1px solid rgba(255,255,255,.24);
  background:transparent;color:#fff;cursor:pointer;display:grid;place-items:center;font-size:1.1rem;
}
.drawer-nav{list-style:none;display:flex;flex-direction:column}
.drawer-nav a{
  display:block;font-size:1.06rem;line-height:56px;color:#fff;font-weight:600;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.drawer-nav a.active{color:var(--lime)}
.drawer-actions{margin-top:auto;display:flex;flex-direction:column;gap:12px;padding-top:24px}
.drawer-actions .btn-ghost{border-color:rgba(255,255,255,.5);color:#fff}
.drawer-actions .btn-ghost:hover{background:#fff;color:var(--ink-green)}
body.is-locked{overflow:hidden}

/* ---------- 分类 Hero ---------- */
.cat-hero{background:var(--bg-2);position:relative;overflow:hidden}
.cat-hero::after{
  content:"";position:absolute;top:-120px;right:-80px;width:380px;height:380px;
  background:radial-gradient(circle,rgba(228,85,43,.16),rgba(228,85,43,0) 70%);
  pointer-events:none;
}
.cat-hero-inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;
  min-height:320px;padding:48px 0;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;font-weight:600;letter-spacing:.12em;color:var(--ink-green);
  text-transform:uppercase;
}
.eyebrow::before{content:"";width:18px;height:4px;border-radius:999px;background:var(--grad-brand)}
.cat-hero h1{
  font-size:clamp(2rem,4vw,3rem);line-height:1.15;font-weight:800;letter-spacing:-.02em;
  margin:16px 0 14px;color:var(--ink-green);max-width:12em;
}
.cat-hero h1 .accent{color:var(--brand)}
.hero-lead{font-size:1.02rem;color:var(--text-2);max-width:34em;margin-bottom:26px}
.cat-hero-figure{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  aspect-ratio:16/10;box-shadow:var(--sh-2);background:var(--bg);
}
.cat-hero-figure img{width:100%;height:100%;object-fit:cover}
.cat-hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(150deg,rgba(18,70,59,.18),rgba(10,42,36,.28));
}

/* ---------- 面包屑 ---------- */
.crumb{padding:12px 0;font-size:13px;color:var(--text-3)}
.crumb ol{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.crumb li::after{content:"/";margin-left:6px;color:var(--text-3)}
.crumb li:last-child::after{content:"";margin:0}
.crumb a{color:var(--text-2);transition:color .2s var(--ease)}
.crumb a:hover{color:var(--brand)}
.crumb li[aria-current]{color:var(--text-3)}

/* ---------- 板块通用 ---------- */
.section{padding:88px 0 0}
.section-head{max-width:44em;margin-bottom:36px}
.section-head h2{
  font-size:clamp(1.7rem,2.8vw,2.4rem);line-height:1.25;font-weight:700;
  letter-spacing:-.01em;color:var(--ink-green);
}
.section-sub{margin-top:12px;color:var(--text-2);font-size:.98rem}

/* ---------- 介绍区 ---------- */
.intro-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:start}
.intro-grid h2{
  font-size:clamp(1.55rem,2.5vw,2.1rem);line-height:1.3;font-weight:700;
  color:var(--ink-green);letter-spacing:-.01em;
}
.intro-copy p{max-width:34em;color:var(--text-2);margin-bottom:18px}
.intro-copy p:last-child{margin-bottom:0}

/* ---------- 编号步骤卡 ---------- */
.step-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.step-card{
  position:relative;display:flex;gap:22px;align-items:flex-start;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px 28px;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(228,85,43,.35)}
.step-num{
  font-size:1.7rem;font-weight:800;line-height:1;color:transparent;
  -webkit-text-stroke:1.5px var(--text-3);
  font-variant-numeric:tabular-nums;flex:none;transition:color .2s var(--ease),-webkit-text-stroke-color .2s var(--ease);
  padding-top:4px;
}
.step-card:hover .step-num{color:var(--brand);-webkit-text-stroke-color:var(--brand)}
.step-card h3{font-size:1.175rem;font-weight:600;color:var(--ink-green);margin-bottom:6px}
.step-card p{font-size:.94rem;color:var(--text-2);line-height:1.8}

/* ---------- 浅色数据卡 ---------- */
.spec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.spec-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px 28px;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.spec-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(228,85,43,.35)}
.spec-dot{width:8px;height:8px;border-radius:999px;background:var(--lime);display:inline-block;margin-right:8px;box-shadow:0 0 0 3px rgba(200,240,75,.28)}
.spec-num{
  display:flex;align-items:baseline;gap:6px;margin:10px 0 6px;
  font-size:clamp(1.9rem,3vw,2.4rem);font-weight:800;line-height:1.1;
  color:var(--ink-green);font-variant-numeric:tabular-nums;
}
.spec-num small{font-size:.9rem;font-weight:600;color:var(--text-2)}
.spec-label{font-size:.9rem;color:var(--text-2)}

/* ---------- 内容卡组 ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  display:flex;flex-direction:column;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.post-card:hover,.post-card:focus-within{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(228,85,43,.35)}
.post-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-2)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.post-card:hover .post-thumb img{transform:scale(1.04)}
.badge{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;
  font-size:13px;font-weight:600;line-height:1.6;
}
.badge-cat{background:var(--green-soft);color:var(--ink-green)}
.badge-overlay{
  position:absolute;top:14px;left:14px;background:rgba(15,61,52,.72);color:#fff;
  backdrop-filter:blur(2px);
}
.post-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1;gap:10px}
.post-card h3{font-size:1.1rem;font-weight:600;line-height:1.55;color:var(--ink-green);transition:color .2s var(--ease)}
.post-card:hover h3{color:var(--brand)}
.post-card h3 a{display:block}
.post-card p{font-size:.9rem;color:var(--text-2);line-height:1.75}
.post-time{font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;margin-top:auto}
.post-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:.9rem;font-weight:600;color:var(--brand);
}
.post-link svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;transition:transform .2s var(--ease)}
.post-link:hover svg{transform:translateX(4px)}

/* ---------- FAQ ---------- */
.faq{max-width:720px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-left:3px solid transparent;border-radius:16px;overflow:hidden;
  box-shadow:var(--sh-1);transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:var(--grad-brand);opacity:0;transition:opacity .2s var(--ease);
}
.faq-item.is-open{border-left-color:var(--brand);box-shadow:var(--sh-2)}
.faq-item.is-open::before{opacity:1}
.faq-btn{
  width:100%;display:flex;align-items:center;gap:16px;
  padding:20px 22px;background:transparent;border:0;cursor:pointer;text-align:left;
}
.faq-index{font-size:.9rem;font-weight:700;color:var(--text-3);font-variant-numeric:tabular-nums;flex:none}
.faq-q{font-size:1.06rem;font-weight:600;color:var(--ink-green);flex:1;line-height:1.6}
.faq-icon{
  position:relative;flex:none;width:26px;height:26px;border-radius:999px;
  border:1.5px solid var(--line);transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;top:50%;left:50%;background:var(--ink-green);
  transform:translate(-50%,-50%);transition:transform .2s var(--ease),background-color .2s var(--ease);
}
.faq-icon::before{width:11px;height:1.75px}
.faq-icon::after{width:1.75px;height:11px}
.faq-item.is-open .faq-icon{border-color:var(--brand);background:rgba(228,85,43,.08)}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:var(--brand)}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg)}
.faq-panel{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
.faq-panel-inner{padding:0 22px 22px 60px;font-size:.94rem;line-height:1.85;color:var(--text-2)}

/* ---------- 底部 CTA 条 ---------- */
.cta-section{padding:88px 0 0}
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  background:var(--grad-brand);border-radius:var(--r-lg);
  padding:38px 44px;box-shadow:var(--sh-2);
}
.cta-band h2{font-size:clamp(1.3rem,2.2vw,1.7rem);font-weight:700;color:#fff;line-height:1.4;letter-spacing:-.01em}
.cta-band p{color:rgba(255,255,255,.86);font-size:.94rem;margin-top:6px}
.cta-band .btn-light{flex:none}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--grad-ink);color:rgba(255,255,255,.78);margin-top:96px;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.site-footer .logo-text{color:#fff}
.footer-desc{font-size:.92rem;line-height:1.8;color:rgba(255,255,255,.62);margin:16px 0 20px;max-width:24em}
.footer-contact-mini a{
  display:flex;align-items:center;gap:10px;font-size:.9rem;
  color:rgba(255,255,255,.72);margin-bottom:10px;transition:color .2s var(--ease);
}
.footer-contact-mini a:hover{color:var(--lime)}
.footer-contact-mini svg,.footer-info svg{
  width:18px;height:18px;flex:none;fill:none;stroke:currentColor;
  stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;
}
.footer-col h4{font-size:.95rem;font-weight:700;color:#fff;margin-bottom:16px}
.footer-col a{display:block;font-size:.9rem;color:rgba(255,255,255,.66);padding:5px 0;transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--lime);text-decoration:underline;text-underline-offset:4px}
.footer-info{list-style:none;font-size:.9rem}
.footer-info li{display:flex;gap:10px;align-items:flex-start;margin-bottom:12px;color:rgba(255,255,255,.66)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:48px;padding:22px 0 26px;border-top:1px solid rgba(255,255,255,.12);
  font-size:.82rem;color:rgba(255,255,255,.62);
}
.fb-links{display:flex;gap:20px;flex-wrap:wrap}
.fb-links a{transition:color .2s var(--ease)}
.fb-links a:hover{color:var(--lime);text-decoration:underline;text-underline-offset:4px}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:1120px}
}
@media (max-width:1024px){
  .container{padding:0 24px}
  .main-nav,.header-actions .link-quiet{display:none}
  .header-actions{margin-left:auto}
  .nav-toggle{display:inline-flex}
  .cat-hero-inner{grid-template-columns:1fr;gap:28px;padding:40px 0;min-height:0}
  .cat-hero h1{max-width:none}
  .intro-grid{grid-template-columns:1fr;gap:24px}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .spec-grid{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .header-inner{height:64px;gap:16px}
  .header-actions .btn{display:none}
  .cat-hero-figure{aspect-ratio:16/11}
  .section{padding:56px 0 0}
  .cta-section{padding:56px 0 0}
  .section-head{margin-bottom:24px}
  .step-grid{grid-template-columns:1fr;gap:14px}
  .step-card{padding:22px 20px;gap:16px}
  .spec-grid{grid-template-columns:1fr;gap:14px}
  .post-grid{grid-template-columns:1fr;gap:20px}
  .cta-band{padding:28px 24px;border-radius:20px}
  .cta-band .btn{width:100%}
  .faq-panel-inner{padding:0 20px 20px 20px}
  .faq-btn{padding:18px 18px;gap:12px}
  .site-footer{margin-top:64px;padding-top:48px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{justify-content:center;text-align:center}
}
@media (max-width:480px){
  .cat-hero-figure{aspect-ratio:4/3}
  .btn{padding:12px 22px}
  .faq-q{font-size:1rem}
}

/* roulang page: category2 */
:root{
  --brand:#E4552B;
  --brand-deep:#C23F17;
  --ink-green:#0F3D34;
  --green-soft:#E6EFEA;
  --lime:#C8F04B;
  --bg:#FBF8F3;
  --bg-2:#F3EEE5;
  --card:#FFFFFF;
  --text:#16211E;
  --text-2:#5A6660;
  --text-3:#8C948F;
  --line:#E4DCD0;
  --danger:#C0392B;
  --ok:#2E7D5B;
  --grad-brand:linear-gradient(120deg,#E4552B 0%,#F0902F 100%);
  --grad-ink:linear-gradient(150deg,#12463B 0%,#0A2A24 100%);
  --sh-1:0 1px 2px rgba(15,61,52,.05);
  --sh-2:0 10px 24px -12px rgba(15,61,52,.18);
  --sh-3:0 24px 48px -24px rgba(15,61,52,.30);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
svg{display:block}
::selection{background:rgba(228,85,43,.2)}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}

.container{max-width:1200px;margin:0 auto;padding:0 32px}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;font-weight:600;letter-spacing:.12em;color:var(--text-2);
  text-transform:uppercase;
}
.eyebrow::before{content:"";width:18px;height:4px;border-radius:999px;background:var(--grad-brand)}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid transparent;
  transition:box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-2);border-bottom-color:var(--line)}
.header-inner{display:flex;align-items:center;gap:28px;height:76px;transition:height .25s var(--ease)}
.site-header.is-scrolled .header-inner{height:64px}
.logo{display:inline-flex;align-items:center;gap:12px;flex-shrink:0}
.logo-mark{
  width:32px;height:32px;border-radius:10px;background:var(--grad-brand);
  display:grid;place-items:center;transition:transform .25s var(--ease);
}
.logo-mark svg{width:20px;height:20px;fill:none;stroke:#fff;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.logo:hover .logo-mark{transform:rotate(6deg)}
.logo-text{font-weight:800;font-size:1.12rem;color:var(--ink-green);letter-spacing:-.01em}

.main-nav ul{display:flex;align-items:center;gap:4px}
.main-nav a{
  position:relative;display:inline-block;padding:10px 14px;border-radius:10px;
  font-size:.95rem;font-weight:500;color:var(--text-2);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.main-nav a:hover{color:var(--ink-green);background:var(--bg-2)}
.main-nav a.active{color:var(--brand);font-weight:600}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:3px;
  border-radius:999px;background:var(--grad-brand);
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:16px}
.link-ghost{font-size:.95rem;font-weight:500;color:var(--text-2);transition:color .2s var(--ease)}
.link-ghost:hover{color:var(--brand)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;margin-left:auto;
  align-items:center;justify-content:center;background:var(--bg-2);
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink-green);border-radius:2px;position:relative;transition:background .2s}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:20px;height:2px;background:var(--ink-green);border-radius:2px;
  transition:transform .25s var(--ease),top .25s var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle.is-active span{background:transparent}
.nav-toggle.is-active span::before{top:0;transform:rotate(45deg)}
.nav-toggle.is-active span::after{top:0;transform:rotate(-45deg)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-size:.95rem;font-weight:600;padding:13px 26px;border-radius:999px;
  border:1.5px solid transparent;min-height:44px;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),
             background .2s var(--ease),color .2s var(--ease),filter .2s var(--ease);
}
.btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .2s var(--ease)}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-primary:hover svg{transform:translateX(2px)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:transparent;border-color:var(--ink-green);color:var(--ink-green)}
.btn-outline:hover{background:var(--ink-green);color:#fff;transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--ink-green);box-shadow:var(--sh-2)}
.btn-light:hover{transform:translateY(-2px);box-shadow:var(--sh-3);filter:brightness(.98)}
.btn-text{color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:8px;font-size:.95rem}
.btn-text svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .2s var(--ease)}
.btn-text:hover svg{transform:translateX(4px)}
.btn-text:hover{text-decoration:underline;text-underline-offset:5px}

/* ---------- Mobile drawer ---------- */
.overlay{
  position:fixed;inset:0;background:rgba(10,42,36,.5);z-index:85;
  opacity:0;pointer-events:none;transition:opacity .28s var(--ease);
}
.overlay.open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;width:86vw;max-width:360px;height:100%;
  background:var(--grad-ink);z-index:90;padding:28px 26px 26px;
  display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform .3s var(--ease);
}
.drawer.open{transform:translateX(0)}
.drawer-close{
  align-self:flex-end;width:40px;height:40px;border-radius:50%;
  border:1px solid rgba(255,255,255,.25);display:grid;place-items:center;color:#fff;
}
.drawer-close svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round}
.drawer-nav{margin-top:26px;display:flex;flex-direction:column}
.drawer-nav a{
  color:#fff;font-size:1.15rem;font-weight:500;padding:18px 0;
  border-bottom:1px solid rgba(255,255,255,.12);
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.drawer-nav a:hover{padding-left:6px;color:var(--lime)}
.drawer-nav a.active{color:var(--lime)}
.drawer-footer{margin-top:auto;display:grid;gap:12px;padding-top:24px}
.drawer-footer .btn{width:100%}
.drawer-footer .btn-outline{border-color:rgba(255,255,255,.5);color:#fff}
.drawer-footer .btn-outline:hover{background:#fff;color:var(--ink-green)}

/* ---------- Category hero ---------- */
.cat-hero{
  position:relative;background:var(--bg-2);
  padding:54px 0 62px;overflow:hidden;
}
.cat-hero::before{
  content:"";position:absolute;top:-160px;right:-120px;width:460px;height:460px;
  border-radius:50%;background:radial-gradient(circle,rgba(228,85,43,.16),rgba(228,85,43,0) 68%);
  pointer-events:none;
}
.cat-hero-inner{
  position:relative;display:grid;grid-template-columns:1.12fr .88fr;
  gap:48px;align-items:center;
}
.cat-hero-text h1{
  font-size:clamp(2rem,3.6vw,3rem);line-height:1.18;font-weight:800;
  letter-spacing:-.02em;color:var(--ink-green);margin:18px 0 16px;
}
.cat-hero-text p{
  font-size:1.02rem;color:var(--text-2);max-width:34em;margin-bottom:28px;
}
.cat-hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.cat-hero-media{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-2)}
.cat-hero-media img{width:100%;aspect-ratio:16/11;object-fit:cover}
.cat-hero-media::after{
  content:"";position:absolute;inset:0;
  background:var(--grad-ink);opacity:.18;pointer-events:none;
}
.cat-hero-tag{
  position:absolute;left:16px;top:16px;z-index:2;
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600;
  background:rgba(15,61,52,.72);color:#fff;backdrop-filter:blur(2px);
}
.cat-hero-tag i{width:7px;height:7px;border-radius:50%;background:var(--lime);display:block}

/* ---------- Breadcrumb ---------- */
.crumb-bar{padding:14px 0;background:var(--bg);border-bottom:1px solid var(--line)}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-3)}
.crumb li{display:flex;align-items:center;gap:8px}
.crumb li:not(:last-child)::after{content:"/";color:var(--line)}
.crumb a{color:var(--text-2);transition:color .2s var(--ease)}
.crumb a:hover{color:var(--brand)}
.crumb li[aria-current]{color:var(--text-3)}

/* ---------- Sections ---------- */
.section{padding:96px 0}
.section.alt{background:var(--bg-2)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{
  font-size:clamp(1.7rem,2.8vw,2.35rem);line-height:1.25;font-weight:700;
  letter-spacing:-.015em;color:var(--ink-green);margin:16px 0 12px;
}
.section-head p{color:var(--text-2);font-size:1rem;max-width:34em}

/* Intro */
.intro-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:start}
.intro-grid h2{
  font-size:clamp(1.7rem,2.8vw,2.3rem);line-height:1.28;font-weight:700;
  color:var(--ink-green);letter-spacing:-.015em;
}
.intro-body p{color:var(--text-2);font-size:1rem;line-height:1.9;margin-bottom:18px}
.intro-body p:last-child{margin-bottom:0}
.intro-quote{
  margin-top:24px;padding:18px 20px;border-left:4px solid var(--brand);
  background:var(--green-soft);border-radius:0 12px 12px 0;
  color:var(--ink-green);font-size:.95rem;
}

/* Numbered cards */
.num-list{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.num-card{
  display:flex;gap:22px;padding:26px 28px;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.num-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(228,85,43,.35)}
.num-card .num{
  font-size:1.9rem;font-weight:800;line-height:1.1;
  color:transparent;-webkit-text-stroke:1.5px var(--text-3);
  font-variant-numeric:tabular-nums;transition:color .2s var(--ease),-webkit-text-stroke-color .2s var(--ease);
}
.num-card:hover .num{color:var(--brand);-webkit-text-stroke-color:var(--brand)}
.num-card h3{font-size:1.12rem;font-weight:600;color:var(--ink-green);margin-bottom:6px}
.num-card p{font-size:.94rem;color:var(--text-2);line-height:1.75}

/* Spec strip */
.spec-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.spec-card{
  display:flex;gap:14px;align-items:flex-start;padding:26px 26px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.spec-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3)}
.spec-dot{
  width:8px;height:8px;border-radius:50%;background:var(--lime);
  margin-top:11px;flex-shrink:0;box-shadow:0 0 0 4px rgba(200,240,75,.28);
}
.spec-num{
  font-size:clamp(1.7rem,2.6vw,2.2rem);font-weight:800;color:var(--ink-green);
  line-height:1.1;font-variant-numeric:tabular-nums;
}
.spec-num small{font-size:.5em;font-weight:600;color:var(--text-3);margin-left:4px}
.spec-card p{font-size:.9rem;color:var(--text-2);margin-top:4px;line-height:1.7}

/* Content cards */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.content-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.content-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(228,85,43,.35)}
.card-media{position:relative;overflow:hidden}
.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .35s var(--ease)}
.content-card:hover .card-media img{transform:scale(1.04)}
.card-badge{
  position:absolute;left:14px;top:14px;padding:4px 12px;border-radius:999px;
  font-size:13px;font-weight:600;background:rgba(15,61,52,.72);color:#fff;
}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.card-body h3{font-size:1.08rem;font-weight:600;line-height:1.55;color:var(--ink-green);margin-bottom:8px}
.content-card:hover .card-body h3{color:var(--brand)}
.card-body p{font-size:.92rem;color:var(--text-2);line-height:1.75;margin-bottom:16px}
.card-meta{
  display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line);
}
.card-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line)}

/* FAQ */
.faq-wrap{max-width:720px;margin:0 auto}
.faq-title{text-align:center;margin-bottom:32px}
.faq-title h2{font-size:clamp(1.6rem,2.6vw,2.15rem);font-weight:700;color:var(--ink-green);letter-spacing:-.015em}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:16px;
  margin-bottom:14px;overflow:hidden;position:relative;
  transition:box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.faq-item::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:var(--grad-brand);opacity:0;transition:opacity .2s var(--ease);
}
.faq-item.open{border-color:rgba(228,85,43,.4);box-shadow:var(--sh-2)}
.faq-item.open::before{opacity:1}
.faq-q{
  display:flex;align-items:center;gap:14px;width:100%;text-align:left;
  padding:18px 20px;font-size:1.02rem;font-weight:600;color:var(--text);
}
.faq-idx{font-size:13px;font-weight:700;color:var(--text-3);font-variant-numeric:tabular-nums;flex-shrink:0}
.faq-q .txt{flex:1}
.faq-ic{
  width:26px;height:26px;border-radius:50%;border:1.5px solid var(--line);
  display:grid;place-items:center;flex-shrink:0;position:relative;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.faq-ic::before,.faq-ic::after{
  content:"";position:absolute;background:var(--ink-green);border-radius:2px;
  transition:transform .2s var(--ease),background .2s var(--ease);
}
.faq-ic::before{width:10px;height:1.6px}
.faq-ic::after{width:1.6px;height:10px}
.faq-item.open .faq-ic{border-color:var(--brand);background:var(--brand)}
.faq-item.open .faq-ic::before,.faq-item.open .faq-ic::after{background:#fff}
.faq-item.open .faq-ic::after{transform:rotate(90deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
.faq-a p{padding:0 20px 20px 48px;font-size:.94rem;color:var(--text-2);line-height:1.85}

/* CTA band */
.cta-band{
  background:var(--grad-brand);border-radius:var(--r-lg);
  padding:40px 44px;display:flex;align-items:center;justify-content:space-between;
  gap:28px;color:#fff;box-shadow:var(--sh-3);
}
.cta-band h2{font-size:clamp(1.35rem,2.2vw,1.75rem);font-weight:700;line-height:1.35;letter-spacing:-.01em}
.cta-band p{font-size:.95rem;color:rgba(255,255,255,.88);margin-top:6px}

/* ---------- Footer ---------- */
.site-footer{background:var(--grad-ink);color:#fff;margin-top:0}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
  padding:64px 0 44px;border-top:1px solid rgba(255,255,255,.12);
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand .logo-text{color:#fff}
.footer-desc{font-size:.92rem;color:rgba(255,255,255,.66);line-height:1.8;max-width:26em}
.footer-contact-mini{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.footer-contact-mini a{
  display:inline-flex;align-items:center;gap:10px;font-size:.9rem;
  color:rgba(255,255,255,.72);transition:color .2s var(--ease);
}
.footer-contact-mini a:hover{color:var(--lime)}
.footer-contact-mini svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
.footer-col h4{font-size:.95rem;font-weight:600;margin-bottom:16px;color:#fff;letter-spacing:.02em}
.footer-col>a{
  display:block;font-size:.9rem;color:rgba(255,255,255,.66);
  padding:6px 0;transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.footer-col>a:hover{color:var(--lime);padding-left:4px;text-decoration:underline;text-underline-offset:4px}
.footer-info li{display:flex;gap:10px;font-size:.9rem;color:rgba(255,255,255,.66);padding:6px 0;line-height:1.7}
.footer-info svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0;margin-top:4px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding:20px 0 28px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.62);
}
.fb-links{display:flex;gap:20px;flex-wrap:wrap}
.fb-links a{color:rgba(255,255,255,.62);transition:color .2s var(--ease)}
.fb-links a:hover{color:var(--lime);text-decoration:underline;text-underline-offset:4px}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .container{max-width:1120px}
}
@media (max-width:1024px){
  .main-nav,.header-actions .link-ghost{display:none}
  .nav-toggle{display:flex}
  .header-actions{margin-left:0}
  .header-actions .btn{display:none}
  .cat-hero-inner{grid-template-columns:1fr;gap:32px}
  .cat-hero-media{order:2}
  .cat-hero-media img{aspect-ratio:16/9}
  .section{padding:72px 0}
  .intro-grid{grid-template-columns:1fr;gap:32px}
  .num-list{grid-template-columns:1fr}
  .spec-strip{grid-template-columns:1fr}
  .card-grid{grid-template-columns:1fr 1fr}
  .cta-band{flex-direction:column;align-items:flex-start;text-align:left}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:52px 0 36px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .header-inner{height:64px;gap:16px}
  .cat-hero{padding:40px 0 44px}
  .cat-hero-text h1{margin:14px 0 12px}
  .cat-hero-text p{font-size:.96rem;margin-bottom:22px}
  .cat-hero-actions .btn{width:100%}
  .card-grid{grid-template-columns:1fr}
  .num-card{padding:22px;gap:16px}
  .num-card .num{font-size:1.6rem}
  .faq-q{padding:16px;font-size:.98rem;gap:10px}
  .faq-a p{padding:0 16px 18px 42px}
  .cta-band{padding:28px 24px}
  .cta-band .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;padding:44px 0 32px;gap:28px}
  .footer-bottom{flex-direction:column;align-items:center;text-align:center}
  .fb-links{justify-content:center}
  .section-head{margin-bottom:28px}
}
@media (max-width:480px){
  .crumb{font-size:12px}
  .spec-card{padding:20px}
}