/* roulang page: index */
:root{
  --c-ink:#14262A;
  --c-primary:#1F5F55;
  --c-primary-dark:#164A42;
  --c-primary-soft:#E4EFEB;
  --c-accent:#D9793A;
  --c-accent-dark:#B86228;
  --c-bg:#F6F4EF;
  --c-surface:#FFFFFF;
  --c-surface-2:#EFEBE3;
  --c-border:#E2DCD1;
  --c-text:#1B2427;
  --c-text-2:#55636A;
  --c-text-3:#8A959B;

  --r-sm:8px; --r-md:12px; --r-lg:16px; --r-xl:24px; --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,38,42,.05),0 2px 8px rgba(20,38,42,.04);
  --sh-2:0 6px 18px rgba(20,38,42,.07);
  --sh-3:0 18px 40px rgba(20,38,42,.10);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px; --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:80px; --sp-10:112px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  --font-num:"DIN Alternate",system-ui,tabular-nums,sans-serif;
  --ease:.25s cubic-bezier(.2,.7,.3,1);

  --bs-body-bg:var(--c-bg);
  --bs-body-color:var(--c-text);
  --bs-body-font-family:var(--font-sans);
  --bs-border-radius:var(--r-md);
  --bs-border-radius-lg:var(--r-lg);
  --bs-primary:var(--c-primary);
  --bs-link-color:var(--c-primary);
  --bs-link-hover-color:var(--c-primary-dark);
  --bs-border-color:var(--c-border);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--c-bg);color:var(--c-text);
  font-family:var(--font-sans);font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--c-primary-dark)}
h1,h2,h3,h4,p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}

.container{max-width:1240px;padding-left:20px;padding-right:20px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.section{padding:100px 0}
.section-tight{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.section-head h2{font-size:clamp(22px,3.2vw,32px);line-height:1.35;font-weight:700;letter-spacing:-.01em}
.section-head .sub{margin-top:10px;font-size:14px;color:var(--c-text-2);max-width:620px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;letter-spacing:.08em;color:var(--c-primary);background:var(--c-primary-soft);padding:5px 12px;border-radius:var(--r-pill);margin-bottom:18px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent)}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);white-space:nowrap}
.link-more svg{transition:transform var(--ease)}
.link-more:hover svg{transform:translateX(3px)}

/* ---------- buttons ---------- */
.btn{font-weight:600;border-radius:var(--r-md);height:48px;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:0 28px;font-size:15px;border:1px solid transparent;transition:all var(--ease)}
.btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;box-shadow:none}
.btn-x{background:var(--c-accent);color:#fff;border-color:var(--c-accent)}
.btn-x:hover{background:var(--c-accent-dark);border-color:var(--c-accent-dark);color:#fff;transform:translateY(-1px)}
.btn-x:active{transform:translateY(0)}
.btn-x:disabled{opacity:.4;transform:none}
.btn-o{background:#fff;color:var(--c-primary);border-color:var(--c-primary)}
.btn-o:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);border-color:var(--c-primary-dark)}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:transparent;padding:0 12px}
.btn-ghost:hover{background:var(--c-primary-soft)}
.btn-light{background:#fff;color:var(--c-ink);border-color:#fff}
.btn-light:hover{background:#E9E5DC;color:var(--c-ink);border-color:#E9E5DC}
.btn-outline-light-x{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-outline-light-x:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
.btn-lg-x{height:52px;padding:0 32px;font-size:15.5px}
.btn-pill{border-radius:var(--r-pill)}

/* ---------- header ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1030;background:rgba(255,255,255,.86);backdrop-filter:blur(8px) saturate(140%);-webkit-backdrop-filter:blur(8px) saturate(140%);border-bottom:1px solid transparent;transition:all var(--ease)}
.site-header.scrolled{border-bottom-color:var(--c-border);box-shadow:var(--sh-2)}
.nav-inner{height:72px;display:flex;align-items:center;gap:28px;transition:height var(--ease)}
.site-header.scrolled .nav-inner{height:60px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);flex:0 0 auto}
.logo:hover{color:var(--c-ink)}
.logo-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(180deg,var(--c-primary),var(--c-primary-dark));display:grid;place-items:center;flex:0 0 34px}
.logo-text{font-size:17px;letter-spacing:-.01em;white-space:nowrap}
.logo-text b{font-weight:700}
.logo-text i{font-style:normal;font-weight:500;color:var(--c-primary)}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px}
.nav-links a{position:relative;font-size:15px;font-weight:500;color:var(--c-text);padding:8px 12px;border-radius:var(--r-sm)}
.nav-links a:hover{color:var(--c-primary);background:var(--c-primary-soft)}
.nav-links a.active{color:var(--c-primary)}
.nav-links a.active::after{content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:0;width:60%;height:2px;border-radius:2px;background:var(--c-primary)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-actions .btn{height:42px;padding:0 20px;font-size:14.5px}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--c-border);background:#fff;border-radius:var(--r-md);align-items:center;justify-content:center}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-ink);border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.drawer{position:fixed;inset:0 0 0 auto;width:300px;max-width:86vw;background:#fff;z-index:1050;transform:translateX(102%);transition:transform var(--ease);padding:22px;box-shadow:var(--sh-3);display:flex;flex-direction:column;gap:6px}
.drawer.open{transform:translateX(0)}
.drawer a{display:block;padding:14px 12px;border-radius:var(--r-md);color:var(--c-text);font-weight:500;border-bottom:1px solid var(--c-border)}
.drawer a.active{color:var(--c-primary);background:var(--c-primary-soft)}
.drawer-close{margin-left:auto;width:40px;height:40px;border-radius:var(--r-md);border:1px solid var(--c-border);background:#fff;font-size:18px;color:var(--c-text-2)}
.scrim{position:fixed;inset:0;background:rgba(20,38,42,.44);opacity:0;visibility:hidden;transition:var(--ease);z-index:1040}
.scrim.open{opacity:1;visibility:visible}

/* ---------- hero ---------- */
.hero{position:relative;padding:150px 0 96px;overflow:hidden;background:linear-gradient(180deg,#FAF8F4 0%,var(--c-bg) 100%)}
.hero-deco{position:absolute;top:-40px;right:-120px;width:620px;opacity:.06;pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;position:relative;z-index:2}
.hero h1{font-size:clamp(28px,4.6vw,46px);line-height:1.25;font-weight:700;letter-spacing:-.02em}
.hero h1 em{font-style:normal;color:var(--c-primary)}
.hero-sub{margin-top:18px;font-size:17px;color:var(--c-text-2);max-width:520px}
.hero-checks{margin-top:26px;display:flex;flex-direction:column;gap:12px}
.hero-checks li{display:flex;align-items:center;gap:10px;font-size:15px;color:var(--c-text)}
.tick{width:22px;height:22px;border-radius:50%;background:var(--c-primary-soft);display:grid;place-items:center;flex:0 0 22px}
.hero-cta{margin-top:32px;display:flex;flex-wrap:wrap;gap:12px}
.hero-stats{margin-top:40px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;padding-top:26px;border-top:1px solid var(--c-border)}
.hero-stats b{display:block;font-family:var(--font-num);font-size:24px;font-weight:700;color:var(--c-ink);line-height:1.2}
.hero-stats span{font-size:13px;color:var(--c-text-3)}
.hero-media{position:relative}
.hero-media .shot{border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--sh-3);aspect-ratio:4/3;background:var(--c-primary-soft)}
.hero-media .shot img{width:100%;height:100%;object-fit:cover}
.float-card{position:absolute;right:-16px;bottom:-22px;background:#fff;border-radius:var(--r-lg);box-shadow:var(--sh-3);padding:18px 22px;display:flex;align-items:center;gap:16px;border:1px solid var(--c-border)}
.float-card .ring{width:46px;height:46px;border-radius:50%;background:var(--c-primary-soft);display:grid;place-items:center;color:var(--c-primary);font-weight:700;font-family:var(--font-num)}
.float-card strong{display:block;font-family:var(--font-num);font-size:19px;color:var(--c-ink)}
.float-card small{font-size:12.5px;color:var(--c-text-3)}

/* ---------- cards ---------- */
.card-x{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);padding:28px;transition:transform var(--ease),box-shadow var(--ease);height:100%}
.card-x:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.icon-box{width:40px;height:40px;border-radius:10px;background:var(--c-primary-soft);display:grid;place-items:center;color:var(--c-primary);margin-bottom:18px}
.card-x h3{font-size:clamp(18px,2vw,22px);line-height:1.5;font-weight:600;margin-bottom:10px}
.card-x p{font-size:15px;color:var(--c-text-2);line-height:1.8}
.mini-list{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.mini-list li{font-size:14px;color:var(--c-text-2);display:flex;gap:8px;align-items:flex-start}
.mini-list li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--c-accent);margin-top:9px;flex:0 0 5px}

.feat-main{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);overflow:hidden;height:100%;transition:transform var(--ease),box-shadow var(--ease)}
.feat-main:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.feat-main .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--c-primary-soft)}
.feat-main .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.feat-main:hover .thumb img{transform:scale(1.02)}
.feat-main .body{padding:28px}
.feat-main h3{font-size:clamp(19px,2vw,23px);font-weight:600;line-height:1.5;margin-bottom:12px}
.feat-main p{color:var(--c-text-2);font-size:15px}
.stack-col{display:grid;gap:24px;height:100%;grid-template-rows:1fr 1fr}

/* ---------- scenes ---------- */
.scene-row{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;padding:0}
.scene-row + .scene-row{margin-top:80px}
.scene-row.reverse .scene-text{order:2}
.scene-row.reverse .scene-pic{order:1}
.scene-pic{border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:16/10;background:var(--c-primary-soft)}
.scene-pic img{width:100%;height:100%;object-fit:cover}
.scene-text h3{font-size:clamp(20px,2.4vw,26px);font-weight:600;line-height:1.45;margin-bottom:14px}
.scene-text p{color:var(--c-text-2);font-size:15.5px}
.scene-list{margin-top:20px;display:flex;flex-direction:column;gap:12px}
.scene-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--c-text)}
.scene-list .tick{margin-top:3px}

/* ---------- cms ---------- */
.cms-wrap{background:var(--c-surface-2);border-radius:var(--r-xl);padding:44px 36px}
.cms-card{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);overflow:hidden;height:100%;display:flex;flex-direction:column;transition:transform var(--ease),box-shadow var(--ease)}
.cms-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.cms-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--c-primary-soft);display:grid;place-items:center;color:var(--c-primary)}
.cms-card .thumb img{width:100%;height:100%;object-fit:cover}
.cms-card .body{padding:20px;display:flex;flex-direction:column;flex:1}
.cms-card h3{font-size:16.5px;font-weight:600;line-height:1.55;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cms-card h3 a{color:var(--c-text)}
.cms-card h3 a:hover{color:var(--c-primary-dark)}
.cms-card .excerpt{font-size:14px;color:var(--c-text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.cms-meta{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--c-text-3)}
.pill{display:inline-block;font-size:12.5px;padding:4px 10px;border-radius:var(--r-pill);background:var(--c-primary-soft);color:var(--c-primary);max-width:9em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;vertical-align:middle}
.cms-big{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);overflow:hidden;height:100%;display:grid;grid-template-columns:5fr 7fr;transition:transform var(--ease),box-shadow var(--ease)}
.cms-big:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.cms-big .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--c-primary-soft);height:100%;display:grid;place-items:center;color:var(--c-primary)}
.cms-big .thumb img{width:100%;height:100%;object-fit:cover}
.cms-big .body{padding:30px 32px;display:flex;flex-direction:column}
.cms-big h3{font-size:clamp(19px,2vw,23px);font-weight:600;line-height:1.5;margin:14px 0 12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cms-big h3 a{color:var(--c-ink)}
.cms-big h3 a:hover{color:var(--c-primary-dark)}
.cms-big .excerpt{font-size:15px;color:var(--c-text-2);display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}
.empty-state{min-height:240px;border-radius:var(--r-lg);background:var(--c-surface);border:1px dashed var(--c-border);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;color:var(--c-text-2);font-size:15px}

/* ---------- stats & logos ---------- */
.stat-band{background:var(--c-ink);border-radius:var(--r-xl);padding:48px 36px;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;color:#fff}
.stat-band .item{position:relative;padding-left:24px}
.stat-band .item::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:1px;background:rgba(255,255,255,.18)}
.stat-band .item:first-child{padding-left:0}
.stat-band .item:first-child::before{display:none}
.stat-band b{display:block;font-family:var(--font-num);font-size:clamp(26px,3.4vw,36px);font-weight:700;line-height:1.1}
.stat-band span{font-size:13.5px;color:rgba(255,255,255,.72)}
.logo-wall{margin-top:44px;display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.logo-wall div{height:56px;border-radius:var(--r-md);background:#fff;border:1px solid var(--c-border);display:grid;place-items:center;font-size:14px;color:var(--c-text-3);transition:all var(--ease)}
.logo-wall div:hover{color:var(--c-primary);border-color:var(--c-primary);box-shadow:var(--sh-1)}
.quote-grid{margin-top:44px;display:grid;grid-template-columns:1fr 1fr;gap:24px}
.quote{background:#fff;border:1px solid var(--c-border);border-left:3px solid var(--c-primary);border-radius:var(--r-md);padding:26px 28px}
.quote p{font-size:15.5px;color:var(--c-text)}
.quote footer{margin-top:16px;font-size:13.5px;color:var(--c-text-3)}

/* ---------- faq ---------- */
.accordion-item{background:#fff;border:1px solid var(--c-border)!important;border-radius:var(--r-md)!important;margin-bottom:12px;overflow:hidden}
.accordion-item:has(.accordion-button:not(.collapsed)){border-left:3px solid var(--c-accent)!important}
.accordion-button{background:#fff;font-size:16px;font-weight:600;color:var(--c-text);min-height:60px;padding:18px 22px;box-shadow:none!important;display:flex;align-items:center;gap:16px}
.accordion-button:not(.collapsed){background:#fff;color:var(--c-primary)}
.accordion-button:focus{box-shadow:none;outline:2px solid var(--c-primary);outline-offset:-2px}
.accordion-button::after{display:none}
.faq-icon{position:relative;width:28px;height:28px;border-radius:50%;background:var(--c-primary-soft);flex:0 0 28px;margin-left:auto}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--c-primary);border-radius:2px;transition:transform var(--ease)}
.faq-icon::before{width:12px;height:2px;transform:translate(-50%,-50%)}
.faq-icon::after{width:2px;height:12px;transform:translate(-50%,-50%)}
.accordion-button:not(.collapsed) .faq-icon::after{transform:translate(-50%,-50%) scaleY(0)}
.accordion-body{padding:0 22px 22px;font-size:15.5px;line-height:1.85;color:var(--c-text-2)}

/* ---------- cta ---------- */
.cta-band{background:var(--c-ink);color:#fff;padding:88px 0}
.cta-band h2{font-size:clamp(22px,3.2vw,32px);font-weight:700;line-height:1.35}
.cta-band p{margin-top:14px;color:rgba(255,255,255,.75);max-width:640px}
.cta-band .actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px}

/* ---------- footer ---------- */
.site-footer{background:var(--c-ink);color:rgba(255,255,255,.75);padding:72px 0 0;border-top:1px solid rgba(255,255,255,.1)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:56px}
.site-footer h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:18px;letter-spacing:.03em}
.site-footer a{color:rgba(255,255,255,.75);font-size:14px;display:block;padding:6px 0}
.site-footer a:hover{color:#fff}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.7)}
.footer-logo{display:inline-flex;align-items:center;gap:10px;color:#fff;margin-bottom:18px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.55)}

/* ---------- mobile tab ---------- */
.mobile-tab{position:fixed;left:0;right:0;bottom:0;z-index:1040;height:calc(56px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid var(--c-border);display:none;box-shadow:0 -4px 16px rgba(20,38,42,.06)}
.mobile-tab ul{display:grid;grid-template-columns:repeat(5,1fr);height:56px}
.mobile-tab a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;font-size:11px;color:var(--c-text-3);position:relative}
.mobile-tab a.active{color:var(--c-primary)}
.mobile-tab a.active::before{content:"";position:absolute;top:0;width:26px;height:3px;border-radius:0 0 3px 3px;background:var(--c-primary)}
.mobile-tab svg{width:22px;height:22px}

/* ---------- sticky cta ---------- */
.sticky-cta{position:fixed;left:50%;bottom:26px;transform:translate(-50%,12px);z-index:1035;width:min(720px,calc(100% - 40px));height:60px;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-pill);box-shadow:var(--sh-3);display:flex;align-items:center;gap:16px;padding:0 12px 0 26px;opacity:0;visibility:hidden;transition:opacity var(--ease),transform var(--ease),visibility var(--ease)}
.sticky-cta.show{opacity:1;visibility:visible;transform:translate(-50%,0)}
.sticky-cta .label{font-size:14px;color:var(--c-text-2)}
.sticky-cta .btn{margin-left:auto}
.sticky-close{width:36px;height:36px;border-radius:50%;border:1px solid var(--c-border);background:#fff;color:var(--c-text-3);font-size:15px;line-height:1;display:grid;place-items:center}
.sticky-close:hover{color:var(--c-text);background:var(--c-surface-2)}
.sticky-cta.is-hidden{display:none}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .logo-wall{grid-template-columns:repeat(4,1fr)}
  .scene-row{gap:48px}
}
@media (max-width:991.98px){
  .nav-links,.nav-actions{display:none}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .mobile-tab{display:block}
  body{padding-bottom:120px}
  .section{padding:72px 0}
  .section-tight{padding:56px 0}
  .hero{padding:120px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-media{order:2}
  .float-card{display:none}
  .stat-band{grid-template-columns:repeat(2,1fr);padding:36px 26px;gap:28px}
  .stat-band .item{padding-left:0}
  .stat-band .item::before{display:none}
  .logo-wall{grid-template-columns:repeat(3,1fr)}
  .quote-grid{grid-template-columns:1fr}
  .scene-row{grid-template-columns:1fr;gap:32px}
  .scene-row.reverse .scene-text,.scene-row.reverse .scene-pic{order:0}
  .scene-row + .scene-row{margin-top:56px}
  .cms-big{grid-template-columns:1fr}
  .cms-big .thumb{aspect-ratio:16/9}
  .cms-wrap{padding:32px 22px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .sticky-cta{bottom:64px;width:calc(100% - 32px);height:48px;border-radius:var(--r-md);padding:0 8px 0 18px}
  .sticky-cta .label{display:none}
  .sticky-cta .btn{height:38px;padding:0 18px;font-size:14px;margin-left:0;flex:1}
  .sticky-close{width:32px;height:32px}
}
@media (max-width:767.98px){
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:18px}
  .logo-wall{grid-template-columns:repeat(2,1fr)}
  .cta-band{padding:64px 0}
  .footer-grid{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px}
  .hero{padding:104px 0 56px}
  .hero-sub{font-size:16px}
  .card-x{padding:22px}
  .stat-band{grid-template-columns:1fr;gap:22px}
  .sticky-cta{bottom:60px}
}

/* roulang page: article */
:root{
  --c-ink:#14262A;
  --c-primary:#1F5F55;
  --c-primary-dark:#164A42;
  --c-primary-soft:#E4EFEB;
  --c-accent:#D9793A;
  --c-accent-dark:#B86228;
  --c-bg:#F6F4EF;
  --c-surface:#FFFFFF;
  --c-surface-2:#EFEBE3;
  --c-border:#E2DCD1;
  --c-text:#1B2427;
  --c-text-2:#55636A;
  --c-text-3:#8A959B;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  --font-num:"DIN Alternate",system-ui,tabular-nums;
  --r-sm:8px; --r-md:12px; --r-lg:16px; --r-xl:24px; --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,38,42,.05),0 2px 8px rgba(20,38,42,.04);
  --sh-2:0 6px 18px rgba(20,38,42,.07);
  --sh-3:0 18px 40px rgba(20,38,42,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-primary:#1F5F55;
  --bs-body-bg:#F6F4EF;
  --bs-body-color:#1B2427;
  --bs-border-color:#E2DCD1;
  --bs-border-radius:12px;
  --bs-font-sans-serif:var(--font-sans);
  --bs-link-color:#1F5F55;
  --bs-link-hover-color:#164A42;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font-sans);font-size:16px;line-height:1.8;
  color:var(--c-text);background:var(--c-bg);
  padding-bottom:0;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--c-primary);text-decoration:none;transition:color .25s var(--ease)}
a:hover{color:var(--c-primary-dark)}
button,input,select,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--c-text)}
p{margin:0 0 1.15em}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(8px) saturate(140%);
  -webkit-backdrop-filter:blur(8px) saturate(140%);
  border-bottom:1px solid var(--c-border);
  transition:box-shadow .25s var(--ease),height .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-2)}
.nav-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height .25s var(--ease)}
.site-header.is-scrolled .nav-inner{height:60px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:36px;height:36px;border-radius:11px;
  background:linear-gradient(180deg,var(--c-primary),var(--c-primary-dark));
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
  box-shadow:var(--sh-1);
}
.logo-text{font-size:17px;letter-spacing:.2px;line-height:1.15;color:var(--c-ink)}
.logo-text b{font-weight:700}
.logo-text i{font-style:normal;font-weight:500;color:var(--c-primary)}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--c-text-2);padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .25s var(--ease);
}
.nav-links a:hover{color:var(--c-primary-dark)}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(.6)}
.nav-links a.active{color:var(--c-ink);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-md);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);
}
.btn-x{background:var(--c-accent);color:#fff;box-shadow:var(--sh-1)}
.btn-x:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-x:active{transform:translateY(0);background:var(--c-accent-dark)}
.btn-o{background:#fff;border-color:var(--c-primary);color:var(--c-primary)}
.btn-o:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);border-color:var(--c-primary-dark)}
.btn-o:active{background:var(--c-primary-soft);transform:translateY(0)}
.btn:disabled,.btn.disabled{opacity:.4;pointer-events:none}
.btn-sm{height:38px;padding:0 18px;font-size:14px;border-radius:var(--r-sm)}
.btn-ink{background:#fff;color:var(--c-ink)}
.btn-ink:hover{background:var(--c-surface-2);color:var(--c-ink);transform:translateY(-1px)}
.nav-actions .btn{height:42px;padding:0 20px;font-size:14.5px}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;border:1px solid var(--c-border);
  background:#fff;border-radius:var(--r-sm);position:relative;cursor:pointer;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);
  width:18px;height:2px;border-radius:2px;background:var(--c-ink);transition:.25s var(--ease);
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{top:-6px;left:0;transform:none}
.nav-toggle span::after{top:6px;left:0;transform:none}

/* ---------- breadcrumb ---------- */
.crumb-bar{background:var(--c-surface-2);border-bottom:1px solid var(--c-border)}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;min-height:44px;font-size:14px;color:var(--c-text-2)}
.crumb a{color:var(--c-text-2)}
.crumb a:hover{color:var(--c-primary-dark)}
.crumb .sep{color:var(--c-text-3)}
.crumb .cur{color:var(--c-primary);max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- article head ---------- */
.article-head{padding:48px 0 0}
.head-inner{max-width:860px}
.cat-pill{
  display:inline-block;padding:4px 12px;border-radius:var(--r-pill);
  background:var(--c-primary-soft);color:var(--c-primary-dark);
  font-size:12.5px;font-weight:600;letter-spacing:.3px;
}
.article-head h1{
  font-size:clamp(24px,3.4vw,38px);line-height:1.35;font-weight:700;
  margin:16px 0 14px;max-width:22ch;
}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font-size:13px;color:var(--c-text-3)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--c-border)}
.article-meta time{font-family:var(--font-num);letter-spacing:.3px}
.cover-wrap{margin:32px 0 0;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1)}
.cover-wrap img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ---------- layout ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,780px);justify-content:center;
  gap:56px;padding:40px 0 72px;
}
.article-main{min-width:0}

/* ---------- article body ---------- */
.article-body{font-size:17px;line-height:1.9;color:var(--c-text)}
.article-body p{margin:0 0 1.25em}
.article-body h2{
  font-size:22px;line-height:1.45;margin:40px 0 16px;padding-left:14px;
  border-left:4px solid var(--c-primary);border-radius:2px;
}
.article-body h3{font-size:18px;line-height:1.5;margin:28px 0 12px;color:var(--c-ink)}
.article-body h4{font-size:16.5px;margin:22px 0 10px;color:var(--c-ink)}
.article-body ul,.article-body ol{margin:0 0 1.25em;padding-left:1.35em}
.article-body li{margin:0 0 .5em;line-height:1.85}
.article-body ul li::marker{color:var(--c-primary)}
.article-body ol li::marker{color:var(--c-primary);font-weight:600}
.article-body a{border-bottom:1px solid rgba(31,95,85,.35)}
.article-body a:hover{border-bottom-color:var(--c-primary-dark)}
.article-body blockquote{
  margin:24px 0;padding:20px 24px;background:var(--c-primary-soft);
  border-left:4px solid var(--c-primary);border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--c-text-2);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-md);margin:24px 0;width:100%}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--c-text-3);text-align:center;margin-top:8px}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--c-border);padding:12px 14px;text-align:left}
.article-body thead th{background:var(--c-primary-soft);color:var(--c-primary-dark);font-weight:600}
.article-body tbody tr:nth-child(even){background:var(--c-surface)}
.article-body pre{
  background:var(--c-ink);color:#E8EFED;border-radius:var(--r-md);
  padding:18px 20px;overflow-x:auto;font-size:13.5px;line-height:1.7;margin:24px 0;
}
.article-body code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13.5px}
.article-body :not(pre) > code{background:var(--c-surface-2);padding:2px 6px;border-radius:6px}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}

/* ---------- toc ---------- */
.toc{display:none}
.toc-card{
  position:sticky;top:96px;
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-lg);padding:20px 22px;
}
.toc-card h2{font-size:14px;font-weight:700;color:var(--c-ink);margin:0 0 12px;letter-spacing:.4px}
.toc-list{list-style:none;margin:0;padding:0;font-size:14px}
.toc-list li{margin:0 0 8px}
.toc-list a{
  display:block;color:var(--c-text-2);padding-left:10px;
  border-left:2px solid transparent;line-height:1.6;
}
.toc-list a:hover{color:var(--c-primary-dark)}
.toc-list a.is-current{color:var(--c-primary);border-left-color:var(--c-primary);font-weight:600}
.toc-list .lvl-3 a{padding-left:22px;font-size:13.5px;color:var(--c-text-3)}

/* ---------- empty state ---------- */
.empty-block{
  min-height:260px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  background:var(--c-surface-2);border:1px dashed var(--c-border);border-radius:var(--r-lg);text-align:center;padding:32px 20px;
}
.empty-block .ico{
  width:48px;height:48px;border-radius:50%;background:#fff;
  display:flex;align-items:center;justify-content:center;color:var(--c-text-3);
}
.empty-block p{margin:0;color:var(--c-text-2);font-size:15px}
.empty-block a{font-weight:600}

/* ---------- tags / back ---------- */
.article-foot{margin-top:44px;padding-top:28px;border-top:1px solid var(--c-border)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.tag-row .label{font-size:13.5px;color:var(--c-text-3);margin-right:2px}
.tag{
  display:inline-block;padding:6px 14px;border-radius:var(--r-pill);
  background:var(--c-surface);border:1px solid var(--c-border);
  font-size:13px;color:var(--c-text-2);transition:.25s var(--ease);
}
.tag:hover{background:var(--c-primary-soft);border-color:var(--c-primary-soft);color:var(--c-primary-dark)}
.back-link{display:inline-flex;align-items:center;gap:6px;margin-top:22px;font-size:15px;font-weight:600}
.back-link svg{transition:transform .25s var(--ease)}
.back-link:hover svg{transform:translateX(-3px)}

/* ---------- section head ---------- */
.section{padding:72px 0}
.section-alt{background:var(--c-surface-2)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-head h2{font-size:clamp(22px,3.2vw,32px);line-height:1.35}
.section-head .sub{font-size:14px;color:var(--c-text-2);margin-top:8px;max-width:52ch}
.link-more{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;white-space:nowrap}
.link-more svg{transition:transform .25s var(--ease)}
.link-more:hover svg{transform:translateX(3px)}

/* ---------- related cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.p-card{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
  overflow:hidden;display:flex;flex-direction:column;height:100%;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.p-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.p-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--c-primary-soft)}
.p-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.p-card:hover .thumb img{transform:scale(1.02)}
.p-card .body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.p-card h3{font-size:18px;line-height:1.5}
.p-card p{font-size:14.5px;color:var(--c-text-2);margin:0;line-height:1.75}
.p-card .go{margin-top:auto;font-size:14.5px;font-weight:600;display:inline-flex;align-items:center;gap:6px}

/* ---------- cta ---------- */
.cta-band{background:var(--c-ink);color:#fff;padding:80px 0;position:relative;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;right:-80px;top:-60px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(217,121,58,.20),transparent 66%);
}
.cta-band .inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{color:#fff;font-size:clamp(22px,3.2vw,30px);line-height:1.4;margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.78);margin:0;font-size:15.5px;max-width:56ch}
.cta-band .acts{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:var(--c-ink);color:rgba(255,255,255,.75);padding:64px 0 0;position:relative}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;background:rgba(255,255,255,.14);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px}
.f-brand .logo-text{color:#fff;font-size:17px}
.f-brand .logo-text i{color:#9FD2C4}
.f-brand p{font-size:14px;color:rgba(255,255,255,.66);margin:16px 0 0;max-width:34ch;line-height:1.8}
.f-quote{
  margin-top:18px;padding-left:16px;border-left:3px solid var(--c-accent);
  font-size:14px;color:rgba(255,255,255,.82);
}
.f-quote footer{margin-top:6px;font-size:13px;color:rgba(255,255,255,.55)}
.site-footer h3{color:#fff;font-size:15px;font-weight:700;margin:0 0 16px}
.f-links{list-style:none;margin:0;padding:0}
.f-links li{margin-bottom:10px}
.f-links a{color:rgba(255,255,255,.72);font-size:14px}
.f-links a:hover{color:#fff}
.f-contact li{list-style:none;display:flex;gap:10px;font-size:14px;margin-bottom:12px;color:rgba(255,255,255,.72);line-height:1.7}
.f-contact{list-style:none;margin:0;padding:0}
.f-contact .k{color:rgba(255,255,255,.5);flex:0 0 auto}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.7)}

/* ---------- mobile tab ---------- */
.mobile-tab{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:1050;
  height:56px;background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  border-top:1px solid var(--c-border);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tab a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--c-text-3);position:relative;
}
.mobile-tab a svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.mobile-tab a.active{color:var(--c-primary)}
.mobile-tab a.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:3px;border-radius:0 0 3px 3px;background:var(--c-primary);
}
.mobile-tab a.active svg{fill:var(--c-primary-soft)}

/* ---------- convert bar ---------- */
.convert-bar{
  position:fixed;z-index:1045;left:50%;bottom:24px;transform:translate(-50%,12px);
  width:calc(100% - 40px);max-width:720px;height:60px;padding:0 12px 0 22px;
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-pill);
  box-shadow:var(--sh-3);display:flex;align-items:center;justify-content:space-between;gap:16px;
  opacity:0;pointer-events:none;transition:opacity .3s var(--ease),transform .3s var(--ease);
}
.convert-bar.show{opacity:1;pointer-events:auto;transform:translate(-50%,0)}
.convert-bar .label{font-size:14.5px;color:var(--c-text-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.convert-bar .acts{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.convert-bar .close{
  width:32px;height:32px;border-radius:50%;border:1px solid var(--c-border);background:#fff;
  color:var(--c-text-3);display:flex;align-items:center;justify-content:center;cursor:pointer;line-height:1;
}
.convert-bar .close:hover{background:var(--c-surface-2);color:var(--c-ink)}

/* ---------- breakpoints ---------- */
@media (max-width:1199px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
}
@media (min-width:1200px){
  .toc{display:block}
  .article-layout{grid-template-columns:minmax(0,780px) 260px}
}
@media (max-width:991px){
  .nav-links{
    position:absolute;left:0;right:0;top:100%;display:none;flex-direction:column;align-items:stretch;
    gap:0;margin:0;padding:8px 20px 18px;background:#fff;border-bottom:1px solid var(--c-border);
    box-shadow:var(--sh-2);
  }
  .site-header.nav-open .nav-links{display:flex}
  .nav-links a{padding:14px 0;border-bottom:1px solid var(--c-border);font-size:15.5px}
  .nav-links a::after{display:none}
  .nav-links a.active{color:var(--c-primary)}
  .nav-actions{display:none}
  .nav-toggle{display:block}
  .mobile-tab{display:flex}
  body{padding-bottom:132px}
  .convert-bar{
    left:0;right:0;bottom:64px;transform:translate(0,12px);
    width:auto;max-width:none;margin:0 16px;height:48px;border-radius:var(--r-md);padding:0 10px 0 16px;
  }
  .convert-bar.show{transform:translate(0,0)}
  .convert-bar .label{font-size:13.5px}
  .convert-bar .btn{height:38px;padding:0 16px;font-size:14px;border-radius:var(--r-sm)}
  .section{padding:56px 0}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .article-head{padding-top:32px}
  .article-layout{padding:28px 0 56px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .card-grid{grid-template-columns:1fr}
  .cta-band{padding:56px 0}
  .cta-band .inner{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
}
@media (max-width:575px){
  .article-body{font-size:16.5px;line-height:1.85}
  .article-body h2{font-size:20px;margin-top:34px}
  .article-body h3{font-size:17.5px}
  .article-head h1{max-width:none}
  .crumb .cur{max-width:24ch}
  .mobile-tab a{font-size:10.5px}
}

/* roulang page: category1 */
:root{
  --c-ink:#14262A;
  --c-primary:#1F5F55;
  --c-primary-dark:#164A42;
  --c-primary-soft:#E4EFEB;
  --c-accent:#D9793A;
  --c-accent-dark:#B86228;
  --c-bg:#F6F4EF;
  --c-surface:#FFFFFF;
  --c-surface-2:#EFEBE3;
  --c-border:#E2DCD1;
  --c-text:#1B2427;
  --c-text-2:#55636A;
  --c-text-3:#8A959B;
  --r-sm:8px;--r-md:12px;--r-lg:16px;--r-xl:24px;--r-pill:999px;
  --sh-1:0 1px 2px rgba(20,38,42,.05),0 2px 8px rgba(20,38,42,.04);
  --sh-2:0 6px 18px rgba(20,38,42,.07);
  --sh-3:0 18px 40px rgba(20,38,42,.10);
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:80px;--sp-10:112px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  --font-num:"DIN Alternate",system-ui,tabular-nums;
  --ease:.25s cubic-bezier(.2,.7,.3,1);
  --bs-primary:#1F5F55;
  --bs-primary-rgb:31,95,85;
  --bs-body-bg:#F6F4EF;
  --bs-body-color:#1B2427;
  --bs-border-radius:12px;
  --bs-border-color:#E2DCD1;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;padding:0;background:var(--c-bg);color:var(--c-text);
  font-family:var(--font-sans);font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--c-primary-dark)}
h1,h2,h3,h4{margin:0;color:var(--c-text);font-weight:700;letter-spacing:.2px}
h1{font-size:clamp(26px,3.6vw,40px);line-height:1.28}
h2{font-size:clamp(22px,3.2vw,32px);line-height:1.35}
h3{font-size:clamp(18px,2vw,22px);line-height:1.5;font-weight:600}
p{margin:0 0 1.15em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--c-primary);outline-offset:2px;border-radius:var(--r-sm);
}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-md);border:1px solid transparent;
  font-size:15.5px;font-weight:600;line-height:1;cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
  text-align:center;white-space:nowrap;
}
.btn:active{transform:translateY(0)}
.btn-x{background:var(--c-accent);color:#fff;box-shadow:0 6px 16px rgba(217,121,58,.22)}
.btn-x:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-1px)}
.btn-o{background:#fff;color:var(--c-primary);border-color:var(--c-primary)}
.btn-o:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--c-primary);padding:0 4px;height:auto;font-weight:600}
.btn-ghost:hover{color:var(--c-primary-dark)}
.btn-ghost .arw{transition:transform var(--ease);display:inline-block}
.btn-ghost:hover .arw{transform:translateX(3px)}
.btn:disabled,.btn[disabled]{opacity:.4;pointer-events:none}
.btn-lg{height:52px;padding:0 32px;font-size:16px}
.btn-pill{border-radius:var(--r-pill)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(8px) saturate(140%);
  backdrop-filter:blur(8px) saturate(140%);
  border-bottom:1px solid var(--c-border);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-2)}
.nav-inner{display:flex;align-items:center;gap:var(--sp-5);height:72px;transition:height var(--ease)}
.site-header.is-scrolled .nav-inner{height:60px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);flex:0 0 auto}
.logo:hover{color:var(--c-ink)}
.logo-mark{width:34px;height:34px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(160deg,var(--c-primary),var(--c-primary-dark));flex:0 0 auto}
.logo-text{display:inline-flex;align-items:baseline;gap:6px;font-size:18px;letter-spacing:.3px}
.logo-text b{font-weight:700}
.logo-text i{font-style:normal;font-weight:500;font-size:14px;color:var(--c-text-2)}
.nav-links{display:flex;align-items:center;gap:var(--sp-5);margin-left:auto}
.nav-links a{position:relative;font-size:15px;font-weight:500;color:var(--c-text-2);padding:6px 2px}
.nav-links a::after{content:"";position:absolute;left:50%;bottom:-4px;width:0;height:2px;border-radius:2px;
  background:var(--c-primary);transform:translateX(-50%);transition:width var(--ease)}
.nav-links a:hover{color:var(--c-primary-dark)}
.nav-links a.active{color:var(--c-primary);font-weight:600}
.nav-links a.active::after{width:60%}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-actions .btn{height:42px;padding:0 18px;font-size:14.5px}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--c-border);border-radius:var(--r-md);background:#fff;
  position:relative;cursor:pointer}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;background:var(--c-ink);border-radius:2px;transform:translateX(-50%);
  transition:var(--ease);content:""}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{top:-6px;left:0;transform:none}
.nav-toggle span::after{top:6px;left:0;transform:none}
.site-header.nav-open .nav-toggle span{background:transparent}
.site-header.nav-open .nav-toggle span::before{transform:rotate(45deg);top:0}
.site-header.nav-open .nav-toggle span::after{transform:rotate(-45deg);top:0}

/* ---------- Hero ---------- */
.hero-short{position:relative;overflow:hidden;background:var(--c-bg);padding:64px 0 68px}
.hero-bg,.hero-tint{position:absolute;top:0;right:0;width:46%;height:100%;pointer-events:none}
.hero-bg{background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;opacity:.42}
.hero-tint{background:rgba(31,95,85,.06)}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.08fr .92fr;gap:var(--sp-8);align-items:center;min-height:300px}
.crumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--c-text-3);min-height:40px;margin-bottom:16px}
.crumb a{color:var(--c-text-2)}
.crumb a:hover{color:var(--c-primary-dark)}
.crumb .sep{color:var(--c-border)}
.crumb .current{color:var(--c-primary);font-weight:600}
.badge-soft{display:inline-block;padding:4px 10px;border-radius:var(--r-pill);font-size:12.5px;font-weight:600;
  background:var(--c-primary-soft);color:var(--c-primary-dark);margin-bottom:16px}
.hero-copy h1{margin-bottom:16px;max-width:15em}
.hero-sub{font-size:16.5px;color:var(--c-text-2);max-width:34em;margin-bottom:22px}
.check-list{display:grid;gap:10px;margin-bottom:26px}
.check-list li{display:flex;align-items:flex-start;gap:10px;font-size:15.5px;color:var(--c-text-2)}
.check-list li::before{content:"";flex:0 0 auto;width:18px;height:18px;margin-top:5px;border-radius:50%;
  background:var(--c-primary-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%231F5F55' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 12.5l5.5 5.5L20 6'/%3E%3C/svg%3E") center/12px no-repeat}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px}
.hero-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
  padding:26px 26px 22px;box-shadow:var(--sh-3)}
.hero-card h3{font-size:16px;font-weight:600;margin-bottom:14px}
.hero-card .row-item{display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:11px 0;border-bottom:1px dashed var(--c-border);font-size:14.5px;color:var(--c-text-2)}
.hero-card .row-item:last-of-type{border-bottom:0}
.hero-card .row-item b{font-family:var(--font-num);font-size:16px;color:var(--c-ink);font-weight:700}
.hero-card .foot-note{margin-top:12px;font-size:13px;color:var(--c-text-3)}

/* ---------- 锚点条 ---------- */
.anchor-bar{position:sticky;top:72px;z-index:40;background:rgba(246,244,239,.94);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--c-border)}
.anchor-inner{display:flex;gap:10px;overflow-x:auto;padding-top:12px;padding-bottom:12px;scrollbar-width:none}
.anchor-inner::-webkit-scrollbar{display:none}
.chip{flex:0 0 auto;padding:8px 16px;border-radius:var(--r-pill);background:#fff;border:1px solid var(--c-border);
  font-size:14px;font-weight:500;color:var(--c-text-2);transition:var(--ease)}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary-dark)}
.chip.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff}

/* ---------- 通用板块 ---------- */
.sec{padding:88px 0}
.sec-head{max-width:800px;margin-bottom:44px}
.sec-head .kicker{display:inline-block;font-size:13px;font-weight:600;letter-spacing:1.6px;color:var(--c-accent);margin-bottom:12px}
.sec-head p{margin-top:14px;color:var(--c-text-2);font-size:16px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split.rev .split-media{order:-1}
.split-media{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--c-border);background:var(--c-primary-soft);
  aspect-ratio:16/10;box-shadow:var(--sh-1)}
.split-media img{width:100%;height:100%;object-fit:cover}
.split-body h2{margin-bottom:16px}
.split-body p{color:var(--c-text-2)}
.split-body .check-list{margin:20px 0 22px}
.sec-block+.sec-block{margin-top:80px}
.scroll-anchor{scroll-margin-top:140px}

/* ---------- 对照表 ---------- */
.spec-wrap{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-xl);padding:32px 36px}
.spec-list{display:grid;gap:0}
.spec-row{display:grid;grid-template-columns:220px 1fr;gap:24px;padding:18px 0;border-bottom:1px solid var(--c-border)}
.spec-row:last-child{border-bottom:0}
.spec-row dt{font-size:15px;font-weight:600;color:var(--c-text-3)}
.spec-row dd{margin:0;font-size:15.5px;color:var(--c-text-2)}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-md);overflow:hidden;
  transition:box-shadow var(--ease),border-color var(--ease)}
.faq-item:hover{box-shadow:var(--sh-1)}
.faq-item[open]{border-left:3px solid var(--c-accent);box-shadow:var(--sh-2)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:16px;font-weight:600;color:var(--c-text)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{position:relative;flex:0 0 auto;width:28px;height:28px;border-radius:50%;background:var(--c-primary-soft)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--c-primary);
  transform:translate(-50%,-50%);transition:transform var(--ease)}
.faq-icon::before{width:12px;height:2px}
.faq-icon::after{width:2px;height:12px}
.faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) scaleY(0)}
.faq-body{padding:0 20px 20px;font-size:15.5px;line-height:1.85;color:var(--c-text-2);max-width:70em}

/* ---------- 底部 CTA ---------- */
.cta-band{background:var(--c-ink);color:#fff;padding:80px 0}
.cta-band h2{color:#fff;margin-bottom:14px}
.cta-band p{color:rgba(255,255,255,.75);max-width:46em}
.cta-band .cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.cta-band .btn-w{background:#fff;color:var(--c-ink);border-color:#fff}
.cta-band .btn-w:hover{background:var(--c-surface-2);color:var(--c-ink)}
.cta-band .btn-line{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.cta-band .btn-line:hover{background:rgba(255,255,255,.1);color:#fff;border-color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:rgba(255,255,255,.75);padding:64px 0 0;font-size:14.5px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.12)}
.site-footer .logo{color:#fff}
.site-footer .logo:hover{color:#fff}
.site-footer .logo-text i{color:rgba(255,255,255,.6)}
.site-footer .logo-mark{background:linear-gradient(160deg,var(--c-primary),var(--c-primary-dark))}
.foot-brand p{margin-top:16px;color:rgba(255,255,255,.62);max-width:32em}
.foot-quote{margin-top:16px;padding-left:12px;border-left:3px solid var(--c-primary);color:rgba(255,255,255,.8);font-size:14px}
.foot-quote span{display:block;margin-top:6px;color:rgba(255,255,255,.5);font-size:13px}
.foot-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.foot-col a{display:block;color:rgba(255,255,255,.72);padding:5px 0;font-size:14.5px}
.foot-col a:hover{color:#fff}
.foot-bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;padding:20px 0 26px;
  font-size:13px;color:rgba(255,255,255,.5)}

/* ---------- 移动底部 Tab ---------- */
.mobile-tabs{display:none}
/* ---------- 底部固定转化条 ---------- */
.cta-dock{position:fixed;left:50%;bottom:24px;transform:translate(-50%,8px);z-index:120;width:calc(100% - 40px);max-width:720px;
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-pill);box-shadow:var(--sh-3);
  display:flex;align-items:center;gap:16px;padding:8px 12px 8px 24px;opacity:0;pointer-events:none;
  transition:opacity var(--ease),transform var(--ease)}
.cta-dock.is-show{opacity:1;transform:translate(-50%,0);pointer-events:auto}
.cta-dock .dock-label{font-size:14.5px;font-weight:600;color:var(--c-ink);white-space:nowrap}
.cta-dock .btn{margin-left:auto;height:44px;padding:0 24px;font-size:14.5px}
.dock-close{flex:0 0 auto;width:34px;height:34px;border-radius:50%;border:1px solid var(--c-border);background:#fff;
  color:var(--c-text-3);font-size:16px;line-height:1;cursor:pointer;transition:var(--ease)}
.dock-close:hover{background:var(--c-surface-2);color:var(--c-text)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero-grid{gap:40px}
  .split{gap:40px}
  .foot-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
}
@media (max-width:991px){
  body{padding-bottom:120px}
  .nav-links,.nav-actions{display:none}
  .nav-toggle{display:block;margin-left:auto}
  .site-header.nav-open .nav-links{
    display:flex;flex-direction:column;align-items:stretch;gap:0;position:absolute;top:100%;left:0;right:0;
    padding:8px 20px 16px;background:#fff;border-bottom:1px solid var(--c-border);box-shadow:var(--sh-2);margin:0}
  .site-header.nav-open .nav-links a{padding:13px 0;border-bottom:1px solid var(--c-border);font-size:15.5px}
  .site-header.nav-open .nav-links a::after{display:none}
  .site-header.nav-open .nav-links a.active{color:var(--c-primary);font-weight:600}
  .site-header.nav-open .nav-actions{
    display:flex;position:absolute;top:100%;left:0;right:0;padding:0 20px 20px;background:#fff;margin-top:196px;
    border-bottom:1px solid var(--c-border);box-shadow:var(--sh-2)}
  .hero-short{padding:44px 0 52px}
  .hero-bg,.hero-tint{width:100%;opacity:.2}
  .hero-tint{opacity:1;background:rgba(246,244,239,.72)}
  .hero-grid{grid-template-columns:1fr;gap:32px;min-height:0}
  .hero-card{box-shadow:var(--sh-2)}
  .anchor-bar{top:60px}
  .sec{padding:72px 0}
  .split{grid-template-columns:1fr;gap:28px}
  .split.rev .split-media{order:0}
  .sec-block+.sec-block{margin-top:64px}
  .spec-wrap{padding:26px 22px}
  .spec-row{grid-template-columns:160px 1fr;gap:16px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-dock{left:0;right:0;bottom:64px;width:100%;max-width:none;transform:translateY(8px);border-radius:0;
    border-left:0;border-right:0;padding:7px 14px}
  .cta-dock.is-show{transform:translateY(0)}
  .cta-dock .dock-label{font-size:13.5px}
  .cta-dock .btn{height:40px;padding:0 18px;font-size:13.5px;margin-left:auto}
  .mobile-tabs{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:130;height:56px;
    padding-bottom:env(safe-area-inset-bottom);background:rgba(255,255,255,.96);
    -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-top:1px solid var(--c-border)}
  .mobile-tabs a{flex:1 1 0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
    font-size:11px;color:var(--c-text-3);position:relative}
  .mobile-tabs a svg{width:22px;height:22px}
  .mobile-tabs a.active{color:var(--c-primary)}
  .mobile-tabs a.active::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
    width:22px;height:3px;border-radius:0 0 3px 3px;background:var(--c-primary)}
  .mobile-tabs a.active svg{stroke:var(--c-primary)}
}
@media (max-width:575px){
  .container{padding-left:16px;padding-right:16px}
  body{font-size:15.5px}
  .hero-short{padding:32px 0 44px}
  .hero-copy h1{max-width:none}
  .hero-cta .btn{flex:1 1 100%}
  .sec{padding:52px 0}
  .sec-head{margin-bottom:32px}
  .spec-row{grid-template-columns:1fr;gap:6px}
  .spec-row dt{font-size:13px;letter-spacing:.6px}
  .foot-grid{grid-template-columns:1fr;gap:24px}
  .cta-band{padding:60px 0}
  .cta-band .cta-actions .btn{flex:1 1 100%}
  .faq-item summary{font-size:15.5px;padding:16px}
  .foot-bottom{flex-direction:column}
}

/* roulang page: category2 */
:root{
  --c-ink:#14262A;
  --c-primary:#1F5F55;
  --c-primary-dark:#164A42;
  --c-primary-soft:#E4EFEB;
  --c-accent:#D9793A;
  --c-accent-dark:#B86228;
  --c-bg:#F6F4EF;
  --c-surface:#FFFFFF;
  --c-surface-2:#EFEBE3;
  --c-border:#E2DCD1;
  --c-text:#1B2427;
  --c-text-2:#55636A;
  --c-text-3:#8A959B;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  --font-num:"DIN Alternate",system-ui,tabular-nums;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,38,42,.05),0 2px 8px rgba(20,38,42,.04);
  --sh-2:0 6px 18px rgba(20,38,42,.07);
  --sh-3:0 18px 40px rgba(20,38,42,.10);
  --tr:.25s cubic-bezier(.2,.7,.3,1);
  --bs-body-bg:#F6F4EF;
  --bs-body-color:#1B2427;
  --bs-border-radius:12px;
  --bs-border-color:#E2DCD1;
  --bs-link-color:#1F5F55;
  --bs-link-hover-color:#164A42;
  --bs-primary:#1F5F55;
  --bs-font-sans-serif:var(--font-sans);
}
*,*::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:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  padding-bottom:132px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-primary);text-decoration:none;transition:var(--tr)}
a:hover{color:var(--c-primary-dark)}
h1,h2,h3,h4{margin:0;color:var(--c-text);font-weight:700;letter-spacing:-.2px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,.btn:focus-visible,.pill:focus-visible{
  outline:2px solid var(--c-primary);outline-offset:2px;border-radius:var(--r-sm)
}
.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--c-primary);color:#fff;padding:10px 18px;border-radius:0 0 var(--r-md) 0;z-index:2000}
.skip-link:focus{left:0;color:#fff}

/* 容器 */
.container{max-width:1200px;margin:0 auto;padding:0 20px}
@media(max-width:575.98px){.container{padding:0 16px}}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(8px) saturate(140%);
  -webkit-backdrop-filter:blur(8px) saturate(140%);
  border-bottom:1px solid var(--c-border);
  transition:var(--tr);
}
.site-header.scrolled{box-shadow:var(--sh-2)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px;transition:var(--tr);gap:20px}
.site-header.scrolled .nav-inner{height:60px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-dark));
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
  box-shadow:0 4px 10px rgba(31,95,85,.25);
}
.logo-text{display:inline-flex;align-items:baseline;gap:2px;font-size:19px;line-height:1;letter-spacing:-.3px}
.logo-text b{font-weight:700;color:var(--c-ink)}
.logo-text i{font-style:normal;font-weight:500;color:var(--c-primary);font-size:17px}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;
  font-size:15.5px;font-weight:500;color:var(--c-text-2);border-radius:var(--r-md);
}
.nav-links a:hover{color:var(--c-primary-dark);background:var(--c-primary-soft)}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:2px;width:60%;height:2px;border-radius:2px;
  background:var(--c-primary);transform:translateX(-50%) scaleX(0);transform-origin:center;transition:var(--tr);
}
.nav-links a.active{color:var(--c-primary)}
.nav-links a.active::after{transform:translateX(-50%) scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-border);background:#fff;
  border-radius:var(--r-md);align-items:center;justify-content:center;cursor:pointer;transition:var(--tr);
}
.nav-toggle:hover{background:var(--c-primary-soft);border-color:var(--c-primary)}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-text);border-radius:2px;position:relative;transition:var(--tr)}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-text);border-radius:2px;transition:var(--tr)}
.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{top:0;transform:rotate(45deg);background:var(--c-primary)}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg);background:var(--c-primary)}

/* 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:15.5px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;text-decoration:none;transition:var(--tr);
}
.btn:disabled,.btn.disabled{opacity:.4;pointer-events:none}
.btn-x{background:var(--c-accent);color:#fff;box-shadow:0 6px 16px rgba(217,121,58,.24)}
.btn-x:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-1px)}
.btn-x:active{transform:translateY(0);box-shadow:none}
.btn-o{background:#fff;color:var(--c-primary);border-color:var(--c-primary)}
.btn-o:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);border-color:var(--c-primary-dark)}
.btn-w{background:#fff;color:var(--c-ink)}
.btn-w:hover{background:var(--c-surface-2);color:var(--c-ink)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
.nav-actions .btn{height:42px;padding:0 20px;font-size:15px}
.btn-sm{height:40px;padding:0 20px;font-size:14.5px}

.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-primary)}
.text-link span{transition:var(--tr)}
.text-link:hover span{transform:translateX(3px)}

/* Hero */
.hero{position:relative;overflow:hidden;padding:56px 0 72px;background:var(--c-bg);text-align:center}
.hero::before{
  content:"";position:absolute;top:0;left:0;right:0;height:40%;min-height:260px;
  background:linear-gradient(180deg,rgba(31,95,85,.07),rgba(31,95,85,0));
  clip-path:polygon(0 0,100% 0,100% 70%,0 100%);
  pointer-events:none;
}
.hero .container{position:relative;z-index:1}
.hero-deco{
  position:absolute;right:-60px;top:-40px;width:420px;height:280px;opacity:.06;pointer-events:none;
  background:radial-gradient(closest-side,rgba(31,95,85,.9),transparent 70%);
}
.breadcrumb-nav{margin:0 0 22px}
.breadcrumb-nav ol{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;font-size:14px;color:var(--c-text-3);min-height:24px}
.breadcrumb-nav li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb-nav li+li::before{content:"/";color:var(--c-border)}
.breadcrumb-nav a{color:var(--c-text-3)}
.breadcrumb-nav a:hover{color:var(--c-primary)}
.breadcrumb-nav .current{color:var(--c-primary);font-weight:600}
.hero h1{
  font-size:clamp(28px,4.6vw,46px);line-height:1.25;font-weight:700;
  max-width:900px;margin:0 auto;color:var(--c-ink);
}
.hero-sub{
  max-width:720px;margin:18px auto 0;font-size:17px;line-height:1.8;color:var(--c-text-2);
}
.hero-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:22px}
.tag-soft{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);
  background:var(--c-primary-soft);color:var(--c-primary-dark);font-size:13px;font-weight:600;
}

/* 筛选搜索条 */
.search-bar{
  max-width:960px;margin:34px auto 0;padding:12px;
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
  box-shadow:var(--sh-2);
  display:grid;grid-template-columns:1fr 1fr 1.3fr auto;gap:12px;align-items:center;
}
.sb-field{position:relative}
.sb-field select,.sb-field input{
  width:100%;height:48px;padding:0 16px;border:1px solid var(--c-border);border-radius:var(--r-md);
  background:var(--c-surface-2);color:var(--c-text);font-size:15px;font-family:inherit;
  appearance:none;-webkit-appearance:none;transition:var(--tr);
}
.sb-field input::placeholder{color:var(--c-text-3)}
.sb-field select:hover,.sb-field input:hover{border-color:#CFC7B8}
.sb-field select:focus,.sb-field input:focus{
  outline:none;border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px rgba(31,95,85,.10);
}
.search-bar .btn{height:48px;white-space:nowrap}

/* 通用区块 */
.section{padding:88px 0}
.section.tight{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--c-primary);letter-spacing:.6px;margin-bottom:10px;
}
.section-head .eyebrow::before{content:"";width:18px;height:3px;border-radius:2px;background:var(--c-accent)}
.section-head h2{font-size:clamp(22px,3.2vw,32px);line-height:1.35}
.section-head p{margin-top:10px;font-size:14.5px;color:var(--c-text-2);max-width:620px}

/* 过滤 chips */
.filter-bar{
  display:flex;gap:10px;overflow-x:auto;padding:4px 2px 14px;margin-bottom:26px;
  scrollbar-width:none;-ms-overflow-style:none;
}
.filter-bar::-webkit-scrollbar{display:none}
.pill{
  flex:0 0 auto;height:38px;padding:0 18px;border-radius:var(--r-pill);
  border:1px solid var(--c-border);background:#fff;color:var(--c-text-2);
  font-size:14px;font-weight:500;cursor:pointer;transition:var(--tr);white-space:nowrap;
}
.pill:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft)}
.pill.active{background:var(--c-primary);border-color:var(--c-primary);color:#fff}
.pill.active:hover{background:var(--c-primary-dark);color:#fff}

/* 卡片矩阵 */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card-cell{display:flex}
.card-p{
  display:flex;flex-direction:column;width:100%;height:100%;
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
  overflow:hidden;transition:var(--tr);
}
.card-p:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.card-media{
  display:block;aspect-ratio:16/10;background:var(--c-primary-soft);overflow:hidden;flex:0 0 auto;
}
.card-media img{width:100%;height:100%;object-fit:cover}
.card-media .media-ph{
  width:100%;height:100%;display:flex;align-items:center;justify-content:center;color:var(--c-primary);
}
.card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto}
.badge-soft{
  align-self:flex-start;display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);background:var(--c-primary-soft);color:var(--c-primary-dark);
  font-size:12.5px;font-weight:600;letter-spacing:.2px;
}
.card-body h3{font-size:20px;line-height:1.5;font-weight:600}
.card-body h3 a{color:var(--c-text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body h3 a:hover{color:var(--c-primary-dark)}
.card-body p{
  font-size:15px;line-height:1.75;color:var(--c-text-2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{margin-top:auto;padding-top:6px}

/* 数据带 */
.data-band{
  background:var(--c-ink);color:#fff;border-radius:var(--r-xl);
  padding:44px 40px;display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
}
.data-band .data-item{padding:0 12px;text-align:center;position:relative}
.data-band .data-item+.data-item::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:1px;height:56%;background:rgba(255,255,255,.14);
}
.data-item .num{
  font-family:var(--font-num);font-size:clamp(28px,3.6vw,38px);font-weight:700;
  line-height:1.1;color:#fff;letter-spacing:-.5px;
}
.data-item .num small{font-size:16px;font-weight:600;margin-left:4px;color:rgba(255,255,255,.7)}
.data-item .label{margin-top:10px;font-size:14.5px;color:#fff;font-weight:600}
.data-item .desc{margin-top:6px;font-size:13.5px;color:rgba(255,255,255,.62);line-height:1.7}

/* 步骤 */
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step-card{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
  padding:28px;transition:var(--tr);
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.step-num{
  width:40px;height:40px;border-radius:10px;background:var(--c-primary-soft);color:var(--c-primary-dark);
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:17px;font-weight:700;margin-bottom:16px;
}
.step-card h3{font-size:19px;line-height:1.5;margin-bottom:10px}
.step-card p{font-size:14.8px;line-height:1.8;color:var(--c-text-2)}

/* 分页 */
.pagination-wrap{display:flex;justify-content:center;align-items:center;gap:8px;margin-top:44px;flex-wrap:wrap}
.page-btn{
  min-width:40px;height:40px;padding:0 12px;border-radius:10px;border:1px solid var(--c-border);
  background:#fff;color:var(--c-text-2);font-size:14.5px;font-weight:500;
  display:inline-flex;align-items:center;justify-content:center;transition:var(--tr);
}
.page-btn:hover{border-color:var(--c-primary);color:var(--c-primary)}
.page-btn.current{background:var(--c-primary);border-color:var(--c-primary);color:#fff;font-weight:600}
.page-btn.muted{color:var(--c-text-3);background:var(--c-surface-2);border-color:transparent;cursor:default}
.page-btn.muted:hover{border-color:transparent;color:var(--c-text-3)}

/* 底部 CTA */
.cta-band{
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-dark));
  color:#fff;padding:80px 0;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;left:0;right:0;bottom:-40px;height:160px;opacity:.06;
  background:radial-gradient(closest-side,rgba(255,255,255,.9),transparent 70%);
  pointer-events:none;
}
.cta-band .container{position:relative;z-index:1;text-align:center}
.cta-band h2{font-size:clamp(22px,3.2vw,32px);color:#fff;line-height:1.35}
.cta-band p{margin:16px auto 0;max-width:640px;font-size:16px;color:rgba(255,255,255,.82)}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:32px}

/* 页脚 */
.site-footer{background:var(--c-ink);color:rgba(255,255,255,.75);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.9fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo-text b{color:#fff}
.footer-brand .logo-text i{color:#8FC3B8}
.footer-brand p{margin-top:18px;font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.66);max-width:360px}
.footer-col h4{font-size:15px;color:#fff;font-weight:600;margin-bottom:18px;letter-spacing:.2px}
.footer-col li+li{margin-top:10px}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.7)}
.footer-col a:hover{color:#fff}
.footer-contact li{font-size:14.5px;color:rgba(255,255,255,.7);line-height:1.85}
.footer-contact strong{display:block;color:#fff;font-weight:600;font-size:14px;margin-bottom:2px}
.footer-bottom{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom .legal{display:flex;flex-wrap:wrap;gap:18px}
.footer-bottom a{color:rgba(255,255,255,.5)}
.footer-bottom a:hover{color:#fff}

/* 移动端底部 Tab */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;display:none;
  grid-template-columns:repeat(5,1fr);
  background:rgba(255,255,255,.97);
  backdrop-filter:blur(8px) saturate(140%);
  -webkit-backdrop-filter:blur(8px) saturate(140%);
  border-top:1px solid var(--c-border);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tab a{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;min-height:56px;padding:6px 2px;font-size:11px;color:var(--c-text-3);
}
.mobile-tab a.active{color:var(--c-primary);font-weight:600}
.mobile-tab a.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:22px;height:3px;border-radius:0 0 3px 3px;background:var(--c-primary);
}
.mobile-tab svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}

/* 浮动转化条 */
.float-cta{
  position:fixed;left:50%;bottom:26px;z-index:1050;
  width:min(720px,calc(100% - 40px));height:60px;
  display:flex;align-items:center;gap:16px;padding:0 8px 0 24px;
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-pill);box-shadow:var(--sh-3);
  opacity:0;transform:translate(-50%,8px);pointer-events:none;transition:var(--tr);
}
.float-cta.show{opacity:1;transform:translate(-50%,0);pointer-events:auto}
.float-cta .fc-label{font-size:14.5px;font-weight:600;color:var(--c-text);flex:1 1 auto;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.float-cta .btn{height:44px;padding:0 22px;border-radius:var(--r-pill);font-size:15px}
.fc-close{
  width:34px;height:34px;flex:0 0 auto;border-radius:50%;border:1px solid var(--c-border);
  background:#fff;color:var(--c-text-3);display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:var(--tr);font-size:16px;line-height:1;
}
.fc-close:hover{background:var(--c-surface-2);color:var(--c-text)}

/* 响应式 */
@media(max-width:1199.98px){
  .card-grid{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:991.98px){
  .section{padding:72px 0}
  .section.tight{padding:56px 0}
  .nav-links{
    position:fixed;top:72px;left:0;right:0;display:none;flex-direction:column;align-items:stretch;
    background:#fff;padding:14px 16px 22px;gap:4px;
    border-bottom:1px solid var(--c-border);box-shadow:var(--sh-2);
  }
  .nav-links.open{display:flex}
  .nav-links a{height:48px;padding:0 16px;border-radius:var(--r-md)}
  .nav-links a::after{display:none}
  .nav-links a.active{background:var(--c-primary-soft);color:var(--c-primary)}
  .nav-actions{display:none}
  .nav-toggle{display:inline-flex}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .step-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .mobile-tab{display:grid}
  .search-bar{grid-template-columns:1fr 1fr;gap:12px}
  .search-bar .btn{grid-column:1 / -1}
  .float-cta{
    bottom:calc(56px + env(safe-area-inset-bottom) + 8px);
    width:calc(100% - 24px);height:48px;padding:0 6px 0 14px;border-radius:var(--r-md);gap:10px;
  }
  .float-cta .fc-label{display:none}
  .float-cta .btn{flex:1 1 auto;height:38px;border-radius:var(--r-sm);font-size:14.5px}
  .fc-close{width:32px;height:32px}
  .data-band{padding:36px 24px;gap:16px}
}
@media(max-width:767.98px){
  .section{padding:60px 0}
  .hero{padding:36px 0 56px}
  .hero-sub{font-size:15.5px}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
  .card-grid{grid-template-columns:1fr}
  .step-grid{grid-template-columns:1fr}
  .data-band{grid-template-columns:1fr;gap:0;padding:8px 24px}
  .data-band .data-item{padding:22px 0;text-align:left;border-bottom:1px solid rgba(255,255,255,.12)}
  .data-band .data-item:last-child{border-bottom:none}
  .data-band .data-item+.data-item::before{display:none}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .cta-band{padding:60px 0}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media(max-width:575.98px){
  .search-bar{grid-template-columns:1fr;padding:14px}
  .hero h1{font-size:26px}
  .card-body{padding:20px}
  .btn{height:46px;padding:0 22px;font-size:15px}
  .cta-actions .btn{width:100%}
}
@media(prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category3 */
:root{
  --c-ink:#14262A;
  --c-primary:#1F5F55;
  --c-primary-dark:#164A42;
  --c-primary-soft:#E4EFEB;
  --c-accent:#D9793A;
  --c-accent-dark:#B86228;
  --c-bg:#F6F4EF;
  --c-surface:#FFFFFF;
  --c-surface-2:#EFEBE3;
  --c-border:#E2DCD1;
  --c-text:#1B2427;
  --c-text-2:#55636A;
  --c-text-3:#8A959B;
  --r-sm:8px; --r-md:12px; --r-lg:16px; --r-xl:24px; --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,38,42,.05),0 2px 8px rgba(20,38,42,.04);
  --sh-2:0 6px 18px rgba(20,38,42,.07);
  --sh-3:0 18px 40px rgba(20,38,42,.10);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px; --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:80px; --sp-10:112px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  --font-num:"DIN Alternate",system-ui,tabular-nums;
  --tr:.25s cubic-bezier(.2,.7,.3,1);

  --bs-primary:#1F5F55;
  --bs-body-bg:#F6F4EF;
  --bs-body-color:#1B2427;
  --bs-border-color:#E2DCD1;
  --bs-border-radius:12px;
  --bs-link-color:#1F5F55;
  --bs-link-hover-color:#164A42;
  --bs-font-sans-serif:var(--font-sans);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  padding-bottom:0;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--c-primary);text-decoration:none;transition:color var(--tr)}
a:hover{color:var(--c-primary-dark)}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding-left:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}

.container{max-width:1200px;padding-left:20px;padding-right:20px;margin:0 auto;width:100%}
.section{padding:96px 0}
.section-sm{padding:64px 0}
.sec-head{margin-bottom:40px}
.sec-head h2{font-size:clamp(22px,3.2vw,32px);line-height:1.35;font-weight:700;letter-spacing:.2px}
.sec-head p{margin-top:12px;color:var(--c-text-2);font-size:15px;line-height:1.8;max-width:760px}
.sec-head.row-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.eyebrow{display:inline-block;font-size:12.5px;letter-spacing:2px;color:var(--c-primary);background:var(--c-primary-soft);border-radius:var(--r-pill);padding:4px 12px;margin-bottom:14px;font-weight:600}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(8px) saturate(140%);
  -webkit-backdrop-filter:blur(8px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:box-shadow var(--tr),border-color var(--tr);
}
.site-header.compact{border-bottom-color:var(--c-border);box-shadow:var(--sh-2)}
.nav-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height var(--tr)}
.site-header.compact .nav-inner{height:60px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:36px;height:36px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(180deg,var(--c-primary),var(--c-primary-dark));
  box-shadow:var(--sh-1);
}
.logo-text{display:flex;flex-direction:column;line-height:1.1}
.logo-text b{font-size:16px;font-weight:700;color:var(--c-ink);letter-spacing:.3px}
.logo-text i{font-style:normal;font-size:11.5px;font-weight:500;color:var(--c-text-3);letter-spacing:1.5px}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:12px}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--c-text);padding:10px 14px;border-radius:var(--r-sm);
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:2px;height:2px;width:0;background:var(--c-primary);
  transform:translateX(-50%);transition:width var(--tr);border-radius:2px;
}
.nav-links a:hover{color:var(--c-primary-dark);background:var(--c-primary-soft)}
.nav-links a.active{color:var(--c-primary)}
.nav-links a.active::after{width:60%}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--c-border);border-radius:var(--r-md);
  background:var(--c-surface);position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:50%;width:18px;height:2px;background:var(--c-ink);border-radius:2px;transform:translateX(-50%);
  transition:var(--tr);
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{top:-6px;left:0;transform:none}
.nav-toggle span::after{top:6px;left:0;transform:none}

/* ===== 按钮 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-md);
  font-size:15px;font-weight:600;line-height:1;padding:0 24px;height:48px;border:1px solid transparent;
  transition:background var(--tr),color var(--tr),border-color var(--tr),transform var(--tr),box-shadow var(--tr);
  cursor:pointer;text-align:center;
}
.btn:active{transform:translateY(0)}
.btn-x{background:var(--c-accent);border-color:var(--c-accent);color:#fff;box-shadow:var(--sh-1)}
.btn-x:hover{background:var(--c-accent-dark);border-color:var(--c-accent-dark);color:#fff;transform:translateY(-1px)}
.btn-o{background:var(--c-surface);border-color:var(--c-primary);color:var(--c-primary)}
.btn-o:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);border-color:var(--c-primary-dark)}
.btn-w{background:#fff;border-color:#fff;color:var(--c-ink)}
.btn-w:hover{background:var(--c-primary-soft);border-color:var(--c-primary-soft);color:var(--c-primary-dark)}
.btn-ghost-w{background:transparent;border-color:rgba(255,255,255,.6);color:#fff}
.btn-ghost-w:hover{background:rgba(255,255,255,.14);border-color:#fff;color:#fff}
.btn-lg{height:52px;padding:0 28px;font-size:15.5px}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--c-primary)}
.link-more svg{transition:transform var(--tr)}
.link-more:hover svg{transform:translateX(3px)}

/* ===== Hero ===== */
.hero-scene{
  position:relative;color:#fff;min-height:360px;display:flex;align-items:center;
  background-image:linear-gradient(100deg,rgba(20,38,42,.72),rgba(31,95,85,.55)),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
}
.hero-scene::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:80px;
  background:linear-gradient(180deg,rgba(246,244,239,0),rgba(246,244,239,.9));
  pointer-events:none;
}
.hero-scene .container{position:relative;z-index:2;padding-top:64px;padding-bottom:64px}
.hero-scene h1{font-size:clamp(28px,4.6vw,46px);line-height:1.25;font-weight:700;letter-spacing:.4px;max-width:820px}
.hero-scene p.lead{margin-top:18px;font-size:16.5px;line-height:1.85;color:rgba(255,255,255,.86);max-width:660px}
.crumb{font-size:14px;color:rgba(255,255,255,.72);margin-bottom:18px;min-height:24px;display:flex;flex-wrap:wrap;gap:6px}
.crumb a{color:rgba(255,255,255,.78)}
.crumb a:hover{color:#fff}
.crumb .sep{opacity:.55}
.crumb .now{color:#fff;font-weight:600}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-tags span{
  font-size:13px;padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);color:#fff;
}

/* ===== 概览数据带 ===== */
.stat-strip{background:var(--c-surface);border-bottom:1px solid var(--c-border)}
.stat-strip .row-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:32px 0}
.stat-item{position:relative;padding-left:18px}
.stat-item::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;background:var(--c-primary-soft)}
.stat-item .num{font-family:var(--font-num);font-size:26px;font-weight:700;color:var(--c-primary);letter-spacing:.5px}
.stat-item .num em{font-style:normal;font-size:14px;font-weight:600;margin-left:3px;color:var(--c-text-2)}
.stat-item .lbl{font-size:13.5px;color:var(--c-text-2);margin-top:2px}

/* ===== 时间线 ===== */
.tl-wrap{background:var(--c-bg)}
.timeline{position:relative;padding-left:34px;margin-top:8px}
.timeline::before{content:"";position:absolute;left:6px;top:10px;bottom:10px;width:2px;background:var(--c-border)}
.tl-item{position:relative;padding-bottom:56px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:-34px;top:10px;width:14px;height:14px;border-radius:50%;
  background:var(--c-surface);border:3px solid var(--c-primary);box-shadow:0 0 0 4px rgba(31,95,85,.08);
}
.tl-tag{display:inline-block;font-size:12.5px;font-weight:600;color:var(--c-primary);background:var(--c-primary-soft);
  border-radius:var(--r-pill);padding:4px 12px;margin-bottom:12px;letter-spacing:.4px}
.tl-item h3{font-size:clamp(18px,2vw,22px);line-height:1.5;font-weight:600}
.tl-item p{margin-top:10px;color:var(--c-text-2);font-size:15.5px;line-height:1.85;max-width:760px}
.tl-figure{margin-top:18px;max-width:520px;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);border:1px solid var(--c-border)}
.tl-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.tl-points{margin-top:16px;display:grid;gap:8px;max-width:760px}
.tl-points li{position:relative;padding-left:24px;font-size:15px;color:var(--c-text-2)}
.tl-points li::before{
  content:"";position:absolute;left:0;top:11px;width:12px;height:12px;border-radius:4px;
  background:var(--c-primary-soft);border:2px solid var(--c-primary);
}

/* ===== 场景卡 ===== */
.scene-grid{display:grid;grid-template-columns:7fr 5fr;grid-template-rows:repeat(3,1fr);gap:24px;margin-top:8px}
.scene-card{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);overflow:hidden;
  display:flex;flex-direction:column;transition:transform var(--tr),box-shadow var(--tr);
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.scene-main{grid-row:1/4}
.scene-main .thumb img{aspect-ratio:16/9;object-fit:cover;width:100%}
.scene-card .body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1}
.scene-card h3{font-size:19px;line-height:1.5;font-weight:600}
.scene-card p{font-size:14.5px;color:var(--c-text-2);line-height:1.8}
.scene-small{flex-direction:row}
.scene-small .thumb{flex:0 0 40%;overflow:hidden}
.scene-small .thumb img{height:100%;width:100%;object-fit:cover;aspect-ratio:16/10}
.scene-small .body{padding:20px;gap:6px}
.scene-small h3{font-size:16.5px}
.scene-small p{font-size:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.badge-pill{
  align-self:flex-start;font-size:12.5px;font-weight:600;color:var(--c-primary);background:var(--c-primary-soft);
  border-radius:var(--r-pill);padding:4px 10px;
}

/* ===== 引用 ===== */
.quote-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.quote-card{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
  padding:28px 28px 28px 32px;position:relative;
}
.quote-card::before{content:"";position:absolute;left:0;top:24px;bottom:24px;width:3px;border-radius:3px;background:var(--c-accent)}
.quote-card blockquote{font-size:16px;line-height:1.85;color:var(--c-text)}
.quote-meta{margin-top:16px;font-size:13.5px;color:var(--c-text-3);display:flex;align-items:center;gap:10px}
.quote-meta .who{font-weight:600;color:var(--c-text-2)}

/* ===== FAQ ===== */
.faq-wrap{background:var(--c-surface-2);border-radius:var(--r-xl);padding:48px 40px}
.accordion-item{border:none;background:transparent;margin-bottom:12px}
.accordion-button{
  width:100%;background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-md)!important;
  min-height:60px;padding:16px 20px;font-size:16px;font-weight:600;color:var(--c-text);display:flex;align-items:center;gap:16px;
  box-shadow:none!important;transition:background var(--tr),border-color var(--tr);
}
.accordion-button:hover{background:#fff;border-color:#cfd8d3}
.accordion-button:not(.collapsed){color:var(--c-ink);box-shadow:inset 3px 0 0 var(--c-accent)!important;background:#fff}
.accordion-button::after{display:none!important}
.accordion-button .acc-icon{
  margin-left:auto;flex:0 0 28px;width:28px;height:28px;border-radius:50%;background:var(--c-primary-soft);
  display:flex;align-items:center;justify-content:center;color:var(--c-primary);font-size:17px;font-weight:700;line-height:1;
}
.accordion-button .acc-icon::before{content:"+"}
.accordion-button:not(.collapsed) .acc-icon::before{content:"–"}
.accordion-button:not(.collapsed) .acc-icon{background:var(--c-primary);color:#fff}
.accordion-body{padding:16px 20px 22px;font-size:15.5px;line-height:1.85;color:var(--c-text-2);background:#fff;
  border:1px solid var(--c-border);border-top:none;border-radius:0 0 var(--r-md) var(--r-md);margin-top:-2px}

/* ===== CTA ===== */
.cta-band{background:var(--c-ink);color:#fff;padding:80px 0}
.cta-band h2{font-size:clamp(22px,3.2vw,32px);font-weight:700;line-height:1.35}
.cta-band p{margin-top:14px;color:rgba(255,255,255,.75);font-size:15.5px;max-width:640px}
.cta-actions{margin-top:28px;display:flex;gap:14px;flex-wrap:wrap}

/* ===== 页脚 ===== */
.site-footer{background:var(--c-ink);color:rgba(255,255,255,.75);border-top:1px solid rgba(255,255,255,.08)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 40px}
.footer-grid h4{font-size:14px;font-weight:700;color:#fff;letter-spacing:1px;margin-bottom:16px}
.footer-grid p{font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.68)}
.footer-grid ul li{margin-bottom:10px}
.footer-grid ul a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-grid ul a:hover{color:#fff}
.f-brand .logo-text b{color:#fff}
.f-brand .logo-text i{color:rgba(255,255,255,.55)}
.f-brand p{margin-top:16px;max-width:320px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0 24px;font-size:13px;color:rgba(255,255,255,.5);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:#fff}

/* ===== 移动底部 Tab ===== */
.mobile-tab{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:1050;height:56px;
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-top:1px solid var(--c-border);
  grid-template-columns:repeat(5,1fr);
}
.mobile-tab a{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--c-text-3);position:relative;padding-top:3px;
}
.mobile-tab a svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.mobile-tab a.active{color:var(--c-primary)}
.mobile-tab a.active::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:26px;height:3px;border-radius:0 0 3px 3px;background:var(--c-primary)}

/* ===== 底部固定转化条 ===== */
.sticky-cta{
  position:fixed;left:50%;bottom:24px;z-index:1055;width:calc(100% - 40px);max-width:720px;
  transform:translateX(-50%) translateY(8px);opacity:0;pointer-events:none;
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-pill);
  box-shadow:var(--sh-3);padding:8px 8px 8px 24px;display:flex;align-items:center;gap:16px;
  transition:opacity var(--tr),transform var(--tr);
}
.sticky-cta.show{opacity:1;transform:translateX(-50%) translateY(0);pointer-events:auto}
.sticky-cta .tag{font-size:14px;font-weight:600;color:var(--c-text-2)}
.sticky-cta .btn{margin-left:auto;height:44px;padding:0 22px;border-radius:var(--r-pill)}
.sticky-close{
  width:32px;height:32px;flex:0 0 32px;border-radius:50%;border:1px solid var(--c-border);background:#fff;
  color:var(--c-text-3);font-size:16px;line-height:1;display:flex;align-items:center;justify-content:center;cursor:pointer;
}
.sticky-close:hover{background:var(--c-surface-2);color:var(--c-ink)}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  .section{padding:80px 0}
}
@media (max-width:991px){
  body{padding-bottom:124px}
  .nav-links{
    position:fixed;top:60px;left:12px;right:12px;z-index:1039;
    flex-direction:column;align-items:stretch;gap:4px;margin:0;padding:12px;
    background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);box-shadow:var(--sh-3);
    transform:translateY(-12px);opacity:0;visibility:hidden;transition:var(--tr);
  }
  .nav-links.open{transform:translateY(0);opacity:1;visibility:visible}
  .nav-links a{padding:12px 14px;border-radius:var(--r-md)}
  .nav-links a::after{display:none}
  .nav-links a.active{background:var(--c-primary-soft)}
  .nav-actions{display:none}
  .nav-toggle{display:block}
  .section{padding:72px 0}
  .section-sm{padding:56px 0}
  .mobile-tab{display:grid}
  .sticky-cta{
    bottom:calc(64px + env(safe-area-inset-bottom));width:calc(100% - 32px);
    border-radius:var(--r-md);padding:8px;gap:10px;
  }
  .sticky-cta .tag{display:none}
  .sticky-cta .btn{margin-left:0;width:100%;height:44px;border-radius:var(--r-sm)}
  .sticky-close{position:absolute;right:-6px;top:-34px;width:28px;height:28px;flex:0 0 28px;background:#fff;box-shadow:var(--sh-1)}
  .scene-grid{grid-template-columns:1fr;grid-template-rows:auto}
  .scene-main{grid-row:auto}
  .quote-grid{grid-template-columns:1fr}
  .stat-strip .row-inner{grid-template-columns:repeat(2,1fr);gap:20px;padding:26px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px}
  .faq-wrap{padding:32px 20px}
  .hero-scene{min-height:300px}
  .hero-scene .container{padding-top:48px;padding-bottom:48px}
}
@media (max-width:575px){
  body{font-size:15.5px;padding-bottom:130px}
  .container{padding-left:16px;padding-right:16px}
  .section{padding:56px 0}
  .section-sm{padding:48px 0}
  .scene-small{flex-direction:column}
  .scene-small .thumb{flex:0 0 auto}
  .scene-small .thumb img{aspect-ratio:16/10}
  .scene-small p{-webkit-line-clamp:3}
  .stat-strip .row-inner{grid-template-columns:1fr;gap:16px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .timeline{padding-left:26px}
  .tl-dot{left:-26px;width:12px;height:12px;border-width:3px}
  .cta-band{padding:56px 0}
  .sticky-cta{padding:8px}
}

/* roulang page: category4 */
:root{
  --c-ink:#14262A;
  --c-primary:#1F5F55;
  --c-primary-dark:#164A42;
  --c-primary-soft:#E4EFEB;
  --c-accent:#D9793A;
  --c-accent-dark:#B86228;
  --c-bg:#F6F4EF;
  --c-surface:#FFFFFF;
  --c-surface-2:#EFEBE3;
  --c-border:#E2DCD1;
  --c-text:#1B2427;
  --c-text-2:#55636A;
  --c-text-3:#8A959B;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,38,42,.05),0 2px 8px rgba(20,38,42,.04);
  --sh-2:0 6px 18px rgba(20,38,42,.07);
  --sh-3:0 18px 40px rgba(20,38,42,.10);
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:80px;--sp-10:112px;
  --ease:.25s cubic-bezier(.2,.7,.3,1);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  --font-num:"DIN Alternate",system-ui,tabular-nums;
  --bs-primary:#1F5F55;
  --bs-body-bg:#F6F4EF;
  --bs-body-color:#1B2427;
  --bs-border-radius:12px;
  --bs-border-color:#E2DCD1;
  --bs-link-color:#1F5F55;
  --bs-link-hover-color:#164A42;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
}
*,*::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:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  padding-bottom:0;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--c-primary-dark);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--c-ink);letter-spacing:.2px;}
p{margin:0 0 1.15em;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.container{max-width:1200px;margin:0 auto;padding:0 20px;width:100%;}
.section{padding:96px 0;}
.section-sm{padding:64px 0;}
.section-alt{background:var(--c-surface-2);}
.section-ink{background:var(--c-ink);color:rgba(255,255,255,.78);}
.section-ink h2,.section-ink h3{color:#fff;}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(8px) saturate(140%);
  -webkit-backdrop-filter:blur(8px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:height var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.site-header.scrolled{box-shadow:var(--sh-2);border-bottom-color:var(--c-border);}
.nav-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height var(--ease);}
.site-header.scrolled .nav-inner{height:60px;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--c-ink);}
.logo-mark{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(160deg,var(--c-primary),var(--c-primary-dark));
  box-shadow:var(--sh-1);
}
.logo-text{display:flex;align-items:baseline;gap:4px;font-size:18px;line-height:1;}
.logo-text b{font-weight:700;letter-spacing:.3px;}
.logo-text i{font-style:normal;font-weight:500;font-size:14px;color:var(--c-text-2);}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-links a{
  position:relative;padding:10px 14px;border-radius:var(--r-sm);
  font-size:15px;font-weight:500;color:var(--c-text-2);transition:color var(--ease),background var(--ease);
}
.nav-links a:hover{color:var(--c-primary-dark);background:rgba(31,95,85,.06);}
.nav-links a.active{color:var(--c-primary);}
.nav-links a.active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:60%;height:2px;border-radius:2px;background:var(--c-primary);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--c-border);
  background:var(--c-surface);border-radius:var(--r-sm);position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;transform:translateX(-50%);width:18px;height:2px;border-radius:2px;background:var(--c-ink);content:"";transition:var(--ease);
}
.nav-toggle span{top:50%;margin-top:-1px;}
.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{top:0;transform:translateX(-50%) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:translateX(-50%) rotate(-45deg);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-md);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:transform var(--ease),background var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease),opacity var(--ease);
}
.btn:active{transform:translateY(0);}
.btn-x{background:var(--c-accent);color:#fff;box-shadow:0 6px 16px rgba(217,121,58,.24);}
.btn-x:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-1px);}
.btn-o{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-primary);}
.btn-o:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);border-color:var(--c-primary-dark);}
.btn-lg{height:52px;padding:0 34px;border-radius:var(--r-pill);}
.btn-block{width:100%;}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--c-primary);}
.link-arrow i{transition:transform var(--ease);}
.link-arrow:hover i{transform:translateX(3px);}
.link-arrow:hover{color:var(--c-primary-dark);}

/* 通用标题 */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.sec-head h2{font-size:clamp(22px,3.2vw,32px);line-height:1.35;}
.sec-head p{margin:10px 0 0;color:var(--c-text-2);font-size:15px;max-width:640px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--c-primary);
  background:var(--c-primary-soft);border-radius:var(--r-pill);padding:5px 14px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent);}

/* 面包屑 */
.crumbs{padding-top:24px;}
.crumbs ol{display:flex;flex-wrap:wrap;gap:8px;align-items:center;min-height:40px;font-size:14px;color:var(--c-text-3);margin:0;}
.crumbs li{display:flex;align-items:center;gap:8px;}
.crumbs li+li::before{content:"/";color:var(--c-text-3);}
.crumbs a{color:var(--c-text-2);}
.crumbs a:hover{color:var(--c-primary-dark);}
.crumbs .cur{color:var(--c-primary);font-weight:600;}

/* Hero */
.hero{position:relative;overflow:hidden;padding:56px 0 88px;}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(246,244,239,.86),rgba(246,244,239,.96)),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center right;opacity:.9;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;right:-120px;top:-140px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle at 50% 50%,rgba(31,95,85,.10),rgba(31,95,85,0) 68%);
  pointer-events:none;
}
.hero .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:start;}
.hero h1{font-size:clamp(28px,4.2vw,44px);line-height:1.25;margin-bottom:18px;}
.hero-sub{font-size:16.5px;color:var(--c-text-2);max-width:560px;margin-bottom:24px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-bottom:30px;}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:14.5px;color:var(--c-text-2);}
.hero-points i{color:var(--c-primary);font-size:16px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.hero-note{margin-top:24px;font-size:13.5px;color:var(--c-text-3);display:flex;align-items:center;gap:8px;}

/* 表单卡 */
.form-card{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
  padding:32px;max-width:460px;width:100%;margin-left:auto;box-shadow:var(--sh-3);
}
.form-card h2{font-size:20px;margin-bottom:6px;}
.form-card .form-tip{font-size:13.5px;color:var(--c-text-3);margin-bottom:22px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:6px;}
.form-control,.form-select{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--c-border);border-radius:var(--r-sm);
  background:var(--c-surface);color:var(--c-text);font-size:15px;font-family:inherit;
  transition:border-color var(--ease),box-shadow var(--ease);
}
textarea.form-control{height:auto;min-height:96px;padding:12px 14px;resize:vertical;line-height:1.7;}
.form-control::placeholder{color:var(--c-text-3);}
.form-control:focus,.form-select:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(31,95,85,.14);}
.agree{display:flex;gap:8px;align-items:flex-start;font-size:13px;color:var(--c-text-2);margin:14px 0 18px;line-height:1.6;}
.agree input{width:16px;height:16px;margin-top:3px;accent-color:var(--c-primary);flex:0 0 auto;}
.form-msg{display:none;margin-top:14px;font-size:13.5px;color:var(--c-primary-dark);background:var(--c-primary-soft);border-radius:var(--r-sm);padding:10px 14px;}

/* 服务条目行列表 */
.svc-list{border-top:1px solid var(--c-border);}
.svc-row{
  display:grid;grid-template-columns:48px 1fr auto;gap:20px;align-items:center;
  padding:24px 16px;border-bottom:1px solid var(--c-border);
  transition:background var(--ease);
}
.svc-row:hover{background:rgba(31,95,85,.04);}
.svc-ico{
  width:44px;height:44px;border-radius:11px;background:var(--c-primary-soft);color:var(--c-primary);
  display:grid;place-items:center;font-size:21px;
}
.svc-row h3{font-size:19px;font-weight:600;margin-bottom:6px;}
.svc-row p{margin:0;font-size:15px;color:var(--c-text-2);max-width:760px;}
.svc-row .link-arrow{white-space:nowrap;}

/* 规格对照表 */
.table-scroll{overflow-x:auto;border:1px solid var(--c-border);border-radius:var(--r-lg);background:var(--c-surface);}
.spec-table{width:100%;border-collapse:collapse;min-width:760px;}
.spec-table th,.spec-table td{padding:16px 20px;text-align:left;font-size:15px;border-bottom:1px solid var(--c-border);}
.spec-table thead th{background:var(--c-primary-soft);color:var(--c-primary-dark);font-weight:600;font-size:14.5px;white-space:nowrap;}
.spec-table tbody tr{transition:background var(--ease);}
.spec-table tbody tr:hover{background:rgba(31,95,85,.04);}
.spec-table tbody tr:nth-child(even){background:rgba(239,235,227,.5);}
.spec-table tbody tr:nth-child(even):hover{background:rgba(31,95,85,.06);}
.spec-table td:first-child{font-weight:600;color:var(--c-ink);}
.spec-table tbody tr:last-child td{border-bottom:0;}
.table-note{margin-top:14px;font-size:13.5px;color:var(--c-text-3);}

/* 图文流程 */
.flow-wrap{display:grid;grid-template-columns:6fr 6fr;gap:56px;align-items:center;}
.flow-media{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:16/10;background:var(--c-primary-soft);}
.flow-media img{width:100%;height:100%;object-fit:cover;}
.steps{margin-top:24px;}
.steps li{display:grid;grid-template-columns:40px 1fr;gap:16px;padding:16px 0;border-top:1px solid var(--c-border);}
.steps li:first-child{border-top:0;padding-top:0;}
.step-num{
  width:34px;height:34px;border-radius:50%;background:var(--c-primary);color:#fff;
  display:grid;place-items:center;font-family:var(--font-num);font-size:15px;font-weight:700;
}
.steps h3{font-size:18px;margin-bottom:4px;}
.steps p{margin:0;font-size:14.5px;color:var(--c-text-2);}

/* FAQ */
.faq-acc .accordion-item{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-md);
  margin-bottom:12px;overflow:hidden;
}
.faq-acc .accordion-button{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:60px;padding:16px 20px;background:var(--c-surface);border:0;
  font-size:16px;font-weight:600;color:var(--c-ink);text-align:left;box-shadow:none;
  transition:background var(--ease),color var(--ease);
}
.faq-acc .accordion-button:not(.collapsed){color:var(--c-primary-dark);background:var(--c-surface);}
.faq-acc .accordion-button:hover{background:rgba(31,95,85,.04);}
.faq-acc .accordion-button:focus{box-shadow:none;outline:none;}
.faq-acc .accordion-button:focus-visible{outline:2px solid var(--c-primary);outline-offset:-2px;}
.faq-acc .accordion-button::after{
  content:"";flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  background-color:var(--c-primary-soft);background-image:none;position:relative;
  display:inline-block;
}
.faq-acc .accordion-button::before{
  content:"";position:absolute;right:calc(20px + 7px);top:50%;width:14px;height:2px;margin-top:-1px;
  background:var(--c-primary);border-radius:2px;transition:transform var(--ease);z-index:2;pointer-events:none;
}
.faq-acc .accordion-button::after{
  content:"";position:absolute;right:20px;top:50%;
}
.faq-acc .accordion-button{position:relative;}
.faq-acc .accordion-button .plus-v{
  position:absolute;right:calc(20px + 6px);top:50%;width:2px;height:14px;margin-top:-7px;
  background:var(--c-primary);border-radius:2px;transition:transform var(--ease),opacity var(--ease);pointer-events:none;
}
.faq-acc .accordion-button:not(.collapsed) .plus-v{transform:scaleY(0);opacity:0;}
.faq-acc .accordion-body{
  padding:4px 20px 22px 23px;font-size:15.5px;line-height:1.85;color:var(--c-text-2);
  border-left:3px solid var(--c-accent);
}
.faq-acc .accordion-collapse{border-top:1px solid var(--c-border);}

/* 联系信息 */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.contact-card{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
  padding:28px 24px;transition:transform var(--ease),box-shadow var(--ease);
}
.contact-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.contact-card .svc-ico{margin-bottom:16px;}
.contact-card h3{font-size:18px;margin-bottom:8px;}
.contact-card p{margin:0;font-size:14.5px;color:var(--c-text-2);}
.contact-card .num{font-family:var(--font-num);font-size:19px;font-weight:700;color:var(--c-ink);letter-spacing:.4px;}

/* 底部 CTA */
.cta-band{background:var(--c-ink);color:rgba(255,255,255,.78);padding:80px 0;}
.cta-band-inner{display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;}
.cta-band h2{color:#fff;font-size:clamp(22px,3.2vw,32px);margin-bottom:12px;}
.cta-band p{margin:0;font-size:15.5px;max-width:620px;}
.cta-band .band-actions{display:flex;gap:12px;flex-wrap:wrap;}
.cta-band .btn-white{background:#fff;color:var(--c-ink);}
.cta-band .btn-white:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);}
.cta-band .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff;border-color:#fff;}

/* 页脚 */
.site-footer{background:var(--c-ink);color:rgba(255,255,255,.75);padding:72px 0 0;position:relative;}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;background:rgba(255,255,255,.12);
}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.site-footer h4{color:#fff;font-size:15.5px;font-weight:600;margin-bottom:18px;}
.site-footer a{color:rgba(255,255,255,.75);font-size:14.5px;}
.site-footer a:hover{color:#fff;}
.foot-brand .logo-text b{color:#fff;}
.foot-brand .logo-text i{color:rgba(255,255,255,.65);}
.foot-brand p{margin:18px 0 0;font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.68);max-width:340px;}
.foot-quote{
  margin:20px 0 0;padding-left:14px;border-left:3px solid var(--c-accent);
  font-size:14px;line-height:1.75;color:rgba(255,255,255,.72);
}
.foot-quote cite{display:block;margin-top:8px;font-style:normal;font-size:13px;color:rgba(255,255,255,.55);}
.foot-list li{margin-bottom:12px;}
.foot-contact li{display:flex;gap:10px;margin-bottom:12px;font-size:14.5px;color:rgba(255,255,255,.7);}
.foot-contact i{color:var(--c-accent);margin-top:3px;}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13.5px;color:rgba(255,255,255,.55);
}
.foot-bottom ul{display:flex;flex-wrap:wrap;gap:20px;}

/* 移动端底部 Tab */
.mobile-tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:1040;
  background:rgba(255,255,255,.96);backdrop-filter:blur(8px);
  border-top:1px solid var(--c-border);
  padding-bottom:env(safe-area-inset-bottom,0px);
}
.mobile-tabbar a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  height:56px;font-size:11px;color:var(--c-text-3);position:relative;transition:color var(--ease);
}
.mobile-tabbar a svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.mobile-tabbar a.active{color:var(--c-primary);font-weight:600;}
.mobile-tabbar a.active svg{fill:rgba(31,95,85,.12);}
.mobile-tabbar a.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:28px;height:3px;border-radius:0 0 3px 3px;background:var(--c-primary);
}

/* 底部固定转化条 */
.cta-dock{
  position:fixed;left:50%;bottom:20px;transform:translate(-50%,12px);
  width:calc(100% - 40px);max-width:720px;height:60px;z-index:1050;
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-pill);
  box-shadow:var(--sh-3);display:flex;align-items:center;gap:16px;padding:0 12px 0 24px;
  opacity:0;visibility:hidden;transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
}
.cta-dock.show{opacity:1;visibility:visible;transform:translate(-50%,0);}
.cta-dock .dock-label{font-size:14.5px;font-weight:600;color:var(--c-ink);white-space:nowrap;}
.cta-dock .btn{height:44px;padding:0 22px;margin-left:auto;border-radius:var(--r-pill);}
.dock-close{
  width:34px;height:34px;flex:0 0 auto;border:0;background:transparent;color:var(--c-text-3);
  border-radius:50%;font-size:20px;line-height:1;display:grid;place-items:center;cursor:pointer;
  transition:background var(--ease),color var(--ease);
}
.dock-close:hover{background:var(--c-surface-2);color:var(--c-ink);}

/* 断点 */
@media (max-width:1199.98px){
  .hero-grid{gap:36px;}
}
@media (max-width:991.98px){
  body{padding-bottom:130px;}
  .nav-links,.nav-actions{
    display:none;
  }
  .nav-toggle{display:block;}
  .site-header.open .nav-links{
    display:flex;flex-direction:column;align-items:stretch;gap:4px;
    position:absolute;left:0;right:0;top:100%;margin:0;padding:12px 20px 20px;
    background:var(--c-surface);border-bottom:1px solid var(--c-border);box-shadow:var(--sh-2);
  }
  .site-header.open .nav-links a{padding:12px 14px;border-radius:var(--r-sm);font-size:15.5px;}
  .site-header.open .nav-links a.active::after{display:none;}
  .site-header.open .nav-links a.active{background:var(--c-primary-soft);}
  .site-header.open .nav-actions{
    display:flex;position:absolute;left:0;right:0;top:100%;padding:0 20px 20px;
    background:var(--c-surface);border-bottom:1px solid var(--c-border);
    flex-direction:column;align-items:stretch;gap:10px;
  }
  .hero{padding:32px 0 64px;}
  .hero-grid{grid-template-columns:1fr;}
  .form-card{margin:0 auto;max-width:560px;}
  .section{padding:72px 0;}
  .section-sm{padding:56px 0;}
  .flow-wrap{grid-template-columns:1fr;gap:32px;}
  .contact-grid{grid-template-columns:1fr;gap:16px;}
  .cta-band-inner{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .mobile-tabbar{display:flex;}
  .cta-dock{
    bottom:calc(56px + env(safe-area-inset-bottom,0px) + 8px);
    height:48px;border-radius:var(--r-md);padding:0 8px 0 16px;gap:10px;
  }
  .cta-dock .dock-label{display:none;}
  .cta-dock .btn{height:40px;flex:1;margin-left:0;}
}
@media (max-width:767.98px){
  .section{padding:60px 0;}
  .sec-head{margin-bottom:28px;}
  .svc-row{grid-template-columns:44px 1fr;gap:14px;padding:20px 12px;}
  .svc-row .link-arrow{grid-column:2;margin-top:4px;}
  .form-card{padding:24px;}
}
@media (max-width:575.98px){
  .container{padding:0 16px;}
  .hero h1{font-size:clamp(26px,7.4vw,32px);}
  .hero-points{gap:8px 16px;}
  .btn{height:46px;padding:0 22px;font-size:14.5px;}
  .btn-lg{height:50px;padding:0 26px;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
  .cta-band{padding:60px 0;}
}