/* roulang page: index */
:root{
  --c-void:#04060D;
  --c-bg:#080D1A;
  --c-bg-2:#0C1426;
  --c-panel:#111B33;
  --c-glass:rgba(255,255,255,.045);
  --c-line:rgba(126,168,255,.14);
  --c-line-strong:rgba(126,168,255,.26);
  --c-primary:#2AD4C6;
  --c-primary-700:#16B3A7;
  --c-second:#6B6BFF;
  --c-accent:#F3C05C;
  --c-text:#E9F1FC;
  --c-text-2:#A7B6CE;
  --c-text-3:#6C7C97;
  --c-success:#3FD68C;
  --c-warn:#FF9F45;
  --g-star:linear-gradient(135deg,#2AD4C6,#6B6BFF);
  --g-mask:linear-gradient(180deg,rgba(4,6,13,.15),rgba(4,6,13,.92));
  --g-text:linear-gradient(90deg,#EAF6FF,#9BEDE2);
  --ff-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  --ff-num:ui-monospace,"SF Mono","JetBrains Mono","Roboto Mono",monospace;
  --r-xs:8px;--r-sm:12px;--r-md:16px;--r-lg:20px;--r-xl:28px;--r-pill:999px;
  --sh-1:0 8px 24px -12px rgba(0,0,0,.9);
  --sh-2:0 24px 60px -28px rgba(0,0,0,.95);
  --sh-glow:0 0 24px -4px rgba(42,212,198,.45);
  --ease:220ms cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--ff-sans);
  font-size:16px;
  line-height:1.8;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--c-text);text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease),transform var(--ease),box-shadow var(--ease);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid rgba(42,212,198,.9);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(42,212,198,.28);color:#fff;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#060A14;}
::-webkit-scrollbar-thumb{background:rgba(126,168,255,.22);border-radius:8px;}
::-webkit-scrollbar-thumb:hover{background:rgba(126,168,255,.38);}

.container{max-width:1200px;margin:0 auto;padding:0 40px;width:100%;}
.container-wide{max-width:1280px;margin:0 auto;padding:0 40px;width:100%;}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(8,13,26,.62);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background var(--ease),border-color var(--ease),height var(--ease);
}
.site-header.is-scrolled{
  background:rgba(8,13,26,.86);
  border-bottom-color:var(--c-line);
}
.header-inner{
  max-width:1280px;margin:0 auto;padding:0 40px;
  height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px;
  transition:height var(--ease);
}
.site-header.is-scrolled .header-inner{height:64px;}
.nav-side{display:flex;align-items:center;gap:4px;flex:1;}
.nav-side.right{justify-content:flex-end;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:8px 14px;font-size:15px;color:var(--c-text-2);
  border-radius:var(--r-xs);white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--g-star);transform:scaleX(0);transform-origin:left;transition:transform 180ms ease;
}
.nav-link:hover{color:#fff;}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link[aria-current="page"]{color:#fff;font-weight:600;}
.nav-link[aria-current="page"]::after{transform:scaleX(1);}
.nav-link[aria-current="page"]::before{
  content:"";position:absolute;left:4px;top:50%;transform:translateY(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--c-primary);box-shadow:var(--sh-glow);
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand svg{width:26px;height:26px;flex-shrink:0;}
.brand-name{font-size:20px;font-weight:700;color:#fff;letter-spacing:.01em;white-space:nowrap;}
.nav-cta{
  margin-left:8px;display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 20px;border-radius:var(--r-sm);
  background:var(--g-star);color:#04201E;font-weight:700;font-size:14px;
  box-shadow:var(--sh-glow),inset 0 1px 0 rgba(255,255,255,.28);
  white-space:nowrap;
}
.nav-cta:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 12px 32px -8px rgba(42,212,198,.55);}
.nav-cta:active{transform:translateY(0) scale(.99);background:var(--c-primary-700);}
.hamburger{
  display:none;width:44px;height:44px;border:1px solid var(--c-line);border-radius:var(--r-xs);
  background:var(--c-glass);position:relative;cursor:pointer;flex-shrink:0;
}
.hamburger span{
  position:absolute;left:12px;width:20px;height:2px;border-radius:2px;background:var(--c-text);
  transition:transform var(--ease),opacity var(--ease);
}
.hamburger span:nth-child(1){top:15px;}
.hamburger span:nth-child(2){top:21px;}
.hamburger span:nth-child(3){top:27px;}
.hamburger.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.hamburger.is-open span:nth-child(2){opacity:0;}
.hamburger.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.mobile-drawer{
  display:none;position:fixed;left:0;right:0;top:60px;bottom:0;z-index:79;
  background:rgba(8,13,26,.96);backdrop-filter:blur(18px) saturate(140%);
  border-top:1px solid var(--c-line);
  padding:8px 20px 32px;overflow-y:auto;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer a.m-link{
  display:flex;align-items:center;height:56px;font-size:16px;color:var(--c-text);
  border-bottom:1px solid rgba(126,168,255,.1);
}
.mobile-drawer a.m-link[aria-current="page"]{color:var(--c-primary);font-weight:600;}
.mobile-drawer .m-cta{
  margin-top:24px;display:flex;align-items:center;justify-content:center;height:50px;width:100%;
  border-radius:var(--r-sm);background:var(--g-star);color:#04201E;font-weight:700;
}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease),background-color var(--ease),color var(--ease),filter var(--ease);
}
.btn-primary{
  background:var(--g-star);color:#04201E;
  box-shadow:var(--sh-glow),inset 0 1px 0 rgba(255,255,255,.28);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 12px 32px -8px rgba(42,212,198,.55);}
.btn-primary:active{transform:translateY(0) scale(.99);background:var(--c-primary-700);}
.btn-ghost{
  background:transparent;border-color:var(--c-line-strong);color:var(--c-text);
}
.btn-ghost:hover{border-color:var(--c-primary);background:rgba(42,212,198,.08);transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.text-btn{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--c-text-2);
}
.text-btn .arw{transition:transform var(--ease);}
.text-btn:hover{color:#fff;}
.text-btn:hover .arw{transform:translateX(4px);}

/* ============ Badges / Pills ============ */
.pill{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;color:var(--c-primary);
  background:rgba(42,212,198,.08);border:1px solid rgba(42,212,198,.35);
  letter-spacing:.01em;
}
.pill .dot{width:6px;height:6px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 10px rgba(42,212,198,.9);}
.pill-gold{color:var(--c-accent);background:rgba(243,192,92,.08);border-color:rgba(243,192,92,.38);}
.pill-gold .dot{background:var(--c-accent);box-shadow:0 0 10px rgba(243,192,92,.85);}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;color:var(--c-primary);
  background:rgba(6,14,26,.72);border:1px solid rgba(42,212,198,.42);
  backdrop-filter:blur(8px);
}

/* ============ Glass ============ */
.glass{
  position:relative;
  background:linear-gradient(160deg,rgba(255,255,255,.062),rgba(255,255,255,.018));
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.07);
  overflow:hidden;
}
.glass::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.09) .6px,transparent .6px);
  background-size:22px 22px;
}
.glass > *{position:relative;z-index:1;}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  padding:96px 0 88px;
  min-height:660px;display:flex;align-items:center;
  background:var(--c-bg);
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  opacity:.32;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:var(--g-mask);
}
.hero-glow{
  position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(620px 420px at 18% 12%,rgba(42,212,198,.20),transparent 68%),
    radial-gradient(700px 520px at 86% 84%,rgba(107,107,255,.20),transparent 70%);
}
.hero-grid{
  position:absolute;inset:0;opacity:.55;pointer-events:none;
  background-image:linear-gradient(rgba(126,168,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(126,168,255,.06) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 40%,#000 30%,transparent 85%);
  -webkit-mask-image:radial-gradient(circle at 50% 40%,#000 30%,transparent 85%);
}
.hero-stars{
  position:absolute;inset:0;pointer-events:none;opacity:.35;
  background-image:
    radial-gradient(1.4px 1.4px at 12% 22%,rgba(255,255,255,.9),transparent),
    radial-gradient(1.2px 1.2px at 32% 68%,rgba(154,237,226,.85),transparent),
    radial-gradient(1.6px 1.6px at 58% 18%,rgba(255,255,255,.75),transparent),
    radial-gradient(1.2px 1.2px at 74% 52%,rgba(179,181,255,.85),transparent),
    radial-gradient(1.4px 1.4px at 88% 26%,rgba(255,255,255,.7),transparent),
    radial-gradient(1.1px 1.1px at 46% 86%,rgba(154,237,226,.7),transparent);
}
.hero .container-wide{position:relative;z-index:2;}
.hero-copy{padding-right:32px;}
.hero h1{
  margin:22px 0 0;
  font-size:clamp(30px,4.6vw,54px);
  font-weight:800;line-height:1.18;letter-spacing:0;
  max-width:640px;
}
.grad-text{
  background:var(--g-text);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.hero-sub{
  margin-top:20px;max-width:600px;
  font-size:17px;line-height:1.75;color:var(--c-text-2);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero-points{display:flex;flex-wrap:wrap;gap:24px;margin-top:36px;}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--c-text-2);}
.hero-points svg{width:18px;height:18px;color:var(--c-primary);flex-shrink:0;}

.consult-card{padding:28px;border-radius:var(--r-xl);}
.consult-card h3{font-size:18px;font-weight:600;line-height:1.45;}
.consult-card .c-sub{font-size:13px;color:var(--c-text-3);margin-top:6px;}
.field{margin-top:16px;}
.field label{display:block;font-size:13px;color:var(--c-text-3);margin-bottom:6px;}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-xs);
  background:rgba(4,8,18,.62);border:1px solid var(--c-line);
  color:var(--c-text);outline:none;
  transition:border-color var(--ease),box-shadow var(--ease),background-color var(--ease);
}
.field textarea{height:auto;min-height:120px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:#54637D;}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--c-primary);background:rgba(4,8,18,.85);
  box-shadow:0 0 0 3px rgba(42,212,198,.18);
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#7C8CA8 50%),linear-gradient(135deg,#7C8CA8 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.privacy-note{margin-top:12px;font-size:12px;line-height:1.6;color:var(--c-text-3);}
.mini-stat{
  position:absolute;right:18px;bottom:-16px;z-index:3;
  width:170px;padding:14px 16px;border-radius:var(--r-md);
  background:linear-gradient(150deg,rgba(17,27,51,.96),rgba(8,13,26,.96));
  border:1px solid var(--c-line-strong);
  box-shadow:var(--sh-2);
}
.mini-stat .num{
  font-family:var(--ff-num);font-variant-numeric:tabular-nums;
  font-size:26px;font-weight:800;color:var(--c-accent);line-height:1.1;
}
.mini-stat .lbl{font-size:12px;color:var(--c-text-3);margin-top:4px;}
.consult-wrap{position:relative;padding-bottom:20px;}

/* ============ Sections ============ */
.section{padding:96px 0;position:relative;}
.section.alt{background:var(--c-bg-2);}
.section-head{margin-bottom:40px;}
.section-head.center{text-align:center;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--c-primary);letter-spacing:.02em;margin-bottom:14px;
}
.section-head .eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--g-star);}
.section-head h2{
  font-size:clamp(22px,2.6vw,34px);font-weight:700;line-height:1.3;
}
.section-head .desc{margin-top:12px;font-size:15px;color:var(--c-text-2);max-width:760px;}
.section-head.center .desc{margin-left:auto;margin-right:auto;}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}

/* ============ Trust bar ============ */
.trust-bar{
  border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
  background:rgba(12,20,38,.6);
}
.trust-track{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;overflow-x:auto;scrollbar-width:none;
}
.trust-track::-webkit-scrollbar{display:none;}
.trust-track span{
  display:inline-flex;align-items:center;gap:8px;white-space:nowrap;
  font-size:14px;color:var(--c-text-2);opacity:.55;transition:opacity var(--ease),color var(--ease);
}
.trust-track span:hover{opacity:1;color:#fff;}
.trust-track svg{width:16px;height:16px;color:var(--c-primary);}

/* ============ Steps ============ */
.step-card{
  padding:32px 26px 28px;border-radius:var(--r-lg);height:100%;
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.step-card:hover{transform:translateY(-4px);border-color:var(--c-line-strong);box-shadow:var(--sh-2),inset 0 1px 0 rgba(255,255,255,.07);}
.step-num{
  font-family:var(--ff-num);font-variant-numeric:tabular-nums;
  font-size:40px;font-weight:800;line-height:1;color:var(--c-accent);
  text-shadow:0 0 22px rgba(243,192,92,.35);
}
.step-card h3{margin-top:18px;font-size:19px;font-weight:600;}
.step-card p{margin-top:10px;font-size:14px;color:var(--c-text-2);line-height:1.75;}
.step-card .step-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.step-card .step-tags em{
  font-style:normal;font-size:12px;color:var(--c-text-2);
  padding:4px 10px;border-radius:var(--r-pill);background:rgba(255,255,255,.04);border:1px solid var(--c-line);
}
.step-col-2{margin-top:24px;}
.step-col-3{margin-top:48px;}

/* ============ Stats ============ */
.stat-row{display:flex;flex-wrap:wrap;gap:48px;margin-bottom:36px;}
.stat-item .num{
  font-family:var(--ff-num);font-variant-numeric:tabular-nums;
  font-size:clamp(32px,4vw,48px);font-weight:800;line-height:1.05;
  background:var(--g-star);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent;
}
.stat-item .lbl{font-size:13px;color:var(--c-text-3);margin-top:8px;}

/* ============ Cases ============ */
.case-main{display:block;border-radius:var(--r-lg);overflow:hidden;position:relative;height:100%;min-height:340px;}
.case-main .cover{position:absolute;inset:0;}
.case-main .cover img{width:100%;height:100%;object-fit:cover;transition:transform 420ms ease;}
.case-main .cover::after{content:"";position:absolute;inset:0;background:var(--g-mask);}
.case-main .case-body{position:relative;z-index:2;padding:30px;display:flex;flex-direction:column;justify-content:flex-end;height:100%;min-height:340px;}
.case-main h3{font-size:22px;font-weight:600;line-height:1.45;margin-top:14px;}
.case-main p{margin-top:10px;font-size:14px;color:var(--c-text-2);max-width:520px;}
.case-main .result{
  display:inline-flex;align-items:center;gap:8px;margin-top:16px;
  font-family:var(--ff-num);font-size:14px;color:var(--c-accent);
  padding:6px 12px;border-radius:var(--r-pill);background:rgba(243,192,92,.08);border:1px solid rgba(243,192,92,.32);
}
.case-main:hover .cover img{transform:scale(1.04);}
.case-main:hover{border-color:var(--c-primary);}
.case-side{display:block;border-radius:var(--r-lg);overflow:hidden;padding:18px;display:flex;gap:16px;align-items:center;height:100%;}
.case-side .thumb{
  width:96px;height:96px;border-radius:var(--r-md);overflow:hidden;flex-shrink:0;
  border:1px solid rgba(126,168,255,.12);
}
.case-side .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 420ms ease;}
.case-side h4{font-size:16px;font-weight:600;line-height:1.5;}
.case-side p{margin-top:6px;font-size:13px;color:var(--c-text-2);line-height:1.65;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.case-side .meta{margin-top:8px;font-size:12px;color:var(--c-text-3);font-family:var(--ff-num);}
.case-side:hover{transform:translateY(-4px);border-color:var(--c-primary);box-shadow:var(--sh-2),inset 0 1px 0 rgba(255,255,255,.07);}
.case-side:hover .thumb img{transform:scale(1.04);}

/* ============ News / CMS ============ */
.info-card{
  display:flex;flex-direction:column;height:100%;border-radius:var(--r-lg);overflow:hidden;
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.info-card .cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(140deg,#0D1730,#131F3D);}
.info-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform 420ms ease;}
.info-card .cover::after{content:"";position:absolute;inset:0;background:var(--g-mask);opacity:.85;}
.info-card .cover .badge{position:absolute;left:14px;top:14px;z-index:2;}
.info-card .body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.info-card h3{
  font-size:18px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-card p{
  margin-top:10px;font-size:14px;color:var(--c-text-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-card .foot{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  border-top:1px solid rgba(126,168,255,.1);
}
.info-card .foot .time{font-family:var(--ff-num);font-variant-numeric:tabular-nums;font-size:12px;color:var(--c-text-3);}
.info-card .foot .arw{font-size:18px;color:var(--c-text-3);transition:transform var(--ease),color var(--ease);}
.info-card:hover{transform:translateY(-4px);border-color:var(--c-primary);box-shadow:0 20px 48px -24px rgba(0,0,0,.95),inset 0 1px 0 rgba(255,255,255,.07);}
.info-card:hover .cover img{transform:scale(1.04);}
.info-card:hover .foot .arw{transform:translateX(4px);color:var(--c-primary);}
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  min-height:180px;padding:32px;border-radius:var(--r-lg);text-align:center;
}
.empty-state svg{width:34px;height:34px;color:var(--c-primary);}
.empty-state p{font-size:14px;color:var(--c-text-2);}

/* ============ FAQ ============ */
.faq-wrap{max-width:920px;margin:0 auto;}
.faq-item{border-bottom:1px solid rgba(126,168,255,.12);position:relative;}
.faq-item:first-child{border-top:1px solid rgba(126,168,255,.12);}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 20px 22px 22px;cursor:pointer;background:transparent;
  transition:background-color var(--ease),color var(--ease);
}
.faq-q h3{font-size:17px;font-weight:600;line-height:1.5;color:var(--c-text);}
.faq-q .ico{
  flex-shrink:0;width:28px;height:28px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line-strong);color:var(--c-primary);
  font-size:16px;line-height:1;transition:transform var(--ease),background-color var(--ease);
}
.faq-item.is-open .faq-q{background:var(--c-panel);}
.faq-item.is-open .faq-q h3{color:#fff;}
.faq-item.is-open .faq-q .ico{transform:rotate(135deg);background:rgba(42,212,198,.12);}
.faq-item.is-open::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--c-primary);box-shadow:var(--sh-glow);}
.faq-a{display:none;padding:0 22px 24px 22px;background:var(--c-panel);}
.faq-item.is-open .faq-a{display:block;}
.faq-a p{font-size:15px;line-height:1.8;color:var(--c-text-2);}

/* ============ CTA ============ */
.cta-card{
  position:relative;border-radius:var(--r-xl);padding:52px;
  background:linear-gradient(155deg,rgba(255,255,255,.062),rgba(255,255,255,.016));
  border:1px solid var(--c-line-strong);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-2),inset 0 1px 0 rgba(255,255,255,.07);
  overflow:hidden;
}
.cta-card::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(560px 380px at 6% 0%,rgba(42,212,198,.18),transparent 70%);
}
.cta-card::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.4;
  background-image:radial-gradient(rgba(255,255,255,.10) .7px,transparent .7px);
  background-size:26px 26px;
}
.cta-card > *{position:relative;z-index:2;}
.cta-copy h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.32;}
.cta-copy .desc{margin-top:14px;font-size:15px;color:var(--c-text-2);}
.cta-checks{margin-top:26px;display:flex;flex-direction:column;gap:14px;}
.cta-checks li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--c-text-2);}
.cta-checks svg{width:18px;height:18px;color:var(--c-primary);flex-shrink:0;margin-top:4px;}

/* ============ Footer ============ */
.site-footer{
  position:relative;background:var(--c-void);
  border-top:1px solid var(--c-line);
  padding:72px 0 0;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:120px;pointer-events:none;opacity:.3;
  background-image:
    radial-gradient(1.3px 1.3px at 10% 30%,rgba(255,255,255,.9),transparent),
    radial-gradient(1.1px 1.1px at 34% 66%,rgba(154,237,226,.8),transparent),
    radial-gradient(1.5px 1.5px at 62% 24%,rgba(255,255,255,.75),transparent),
    radial-gradient(1.1px 1.1px at 82% 58%,rgba(179,181,255,.8),transparent);
}
.footer-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .brand-name{font-size:19px;}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--c-text-3);line-height:1.8;max-width:300px;}
.social-row{display:flex;gap:12px;margin-top:22px;}
.social-row a{
  width:38px;height:38px;border-radius:var(--r-xs);display:flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line);background:var(--c-glass);color:var(--c-text-2);
}
.social-row a:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-2px);}
.social-row svg{width:18px;height:18px;}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{font-size:14px;color:var(--c-text-3);}
.footer-col a:hover{color:var(--c-primary);}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--c-text-3);line-height:1.7;}
.footer-contact svg{width:16px;height:16px;color:var(--c-primary);flex-shrink:0;margin-top:5px;}
.footer-bottom{
  position:relative;z-index:2;margin-top:56px;padding:22px 0;
  border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--c-text-3);}
.to-top-text{background:none;border:none;cursor:pointer;font-size:13px;color:var(--c-text-2);padding:0;}
.to-top-text:hover{color:var(--c-primary);}

/* ============ Back to top ============ */
.back-top{
  position:fixed;right:24px;bottom:24px;z-index:70;
  width:48px;height:48px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(17,27,51,.85);border:1px solid var(--c-line-strong);
  backdrop-filter:blur(12px);color:var(--c-text-2);cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity var(--ease),visibility var(--ease),transform var(--ease),box-shadow var(--ease),color var(--ease);
}
.back-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{color:var(--c-primary);box-shadow:var(--sh-glow);border-color:var(--c-primary);}

/* ============ Responsive ============ */
@media screen and (max-width:1199px){
  .container,.container-wide{padding:0 32px;}
  .header-inner{padding:0 32px;}
}
@media screen and (max-width:991px){
  .nav-side{display:none;}
  .hamburger{display:block;}
  .header-inner{height:60px;padding:0 20px;justify-content:space-between;}
  .site-header.is-scrolled .header-inner{height:60px;}
  .brand{position:absolute;left:50%;transform:translateX(-50%);}
  .brand-name{font-size:17px;}
  .brand svg{width:22px;height:22px;}
  .container,.container-wide{padding:0 24px;}
  .section{padding:72px 0;}
  .hero{padding:72px 0 64px;min-height:auto;}
  .hero-copy{padding-right:0;}
  .hero .cell + .cell{margin-top:40px;}
  .step-col-2,.step-col-3{margin-top:0;}
  .step-card{margin-bottom:20px;}
  .case-side{margin-top:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media screen and (max-width:767px){
  .section{padding:56px 0;}
  .hero{padding:48px 0 56px;}
  .hero h1{font-size:clamp(28px,7.4vw,36px);}
  .hero-sub{font-size:15px;}
  .hero-actions .btn{flex:1 1 auto;min-width:150px;}
  .hero-points{gap:16px;}
  .stat-row{gap:28px;}
  .cta-card{padding:32px 22px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .mini-stat{position:static;margin-top:18px;width:100%;}
  .consult-wrap{padding-bottom:0;}
}
@media screen and (max-width:519px){
  .container,.container-wide{padding:0 20px;}
  .hero{padding:40px 0 48px;}
  .section{padding:48px 0;}
  .btn{height:46px;padding:0 20px;font-size:14px;}
  .section-head h2{font-size:22px;}
  .step-card{padding:26px 20px 22px;}
  .info-card .body{padding:18px;}
  .faq-q{padding:18px 16px;}
  .faq-a{padding:0 16px 20px 16px;}
}

/* roulang page: article */
/* ===== 设计变量 ===== */
:root{
  --c-void:#04060D;
  --c-bg:#080D1A;
  --c-bg-2:#0C1426;
  --c-panel:#111B33;
  --c-glass:rgba(255,255,255,.045);
  --c-line:rgba(126,168,255,.14);
  --c-line-strong:rgba(126,168,255,.26);
  --c-primary:#2AD4C6;
  --c-primary-700:#16B3A7;
  --c-second:#6B6BFF;
  --c-accent:#F3C05C;
  --c-text:#E9F1FC;
  --c-text-2:#A7B6CE;
  --c-text-3:#6C7C97;
  --c-success:#3FD68C;
  --c-warn:#FF9F45;
  --g-star:linear-gradient(135deg,#2AD4C6,#6B6BFF);
  --g-mask:linear-gradient(180deg,rgba(4,6,13,.15),rgba(4,6,13,.92));
  --g-text:linear-gradient(90deg,#EAF6FF,#9BEDE2);
  --r-xs:8px; --r-sm:12px; --r-md:16px; --r-lg:20px; --r-xl:28px;
  --sh-1:0 8px 24px -12px rgba(0,0,0,.9);
  --sh-2:0 24px 60px -28px rgba(0,0,0,.95);
  --sh-glow:0 0 24px -4px rgba(42,212,198,.45);
  --ff-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  --ff-num:ui-monospace,"SF Mono","JetBrains Mono","Roboto Mono",monospace;
  --t:220ms cubic-bezier(.2,.7,.3,1);
}
/* ===== reset ===== */
*,*::before,*::after{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--ff-sans);
  font-size:16px;
  line-height:1.8;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--c-text-2);text-decoration:none;transition:color var(--t),border-color var(--t);}
a:hover{color:var(--c-primary);}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;padding:0;}
ul,ol{list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
:focus-visible{outline:2px solid rgba(42,212,198,.9);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(42,212,198,.28);color:#fff;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#060A14;}
::-webkit-scrollbar-thumb{background:rgba(126,168,255,.2);border-radius:8px;}
::-webkit-scrollbar-thumb:hover{background:rgba(42,212,198,.4);}
.num{font-family:var(--ff-num);font-variant-numeric:tabular-nums;}

/* ===== 容器 ===== */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 32px;}}
@media (min-width:1280px){.container{padding:0 40px;}}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--c-panel);color:var(--c-text);padding:10px 16px;border-radius:var(--r-xs);z-index:200;}
.skip-link:focus{left:16px;top:16px;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;letter-spacing:.01em;cursor:pointer;
  border:1px solid transparent;transition:transform var(--t),box-shadow var(--t),background var(--t),border-color var(--t),color var(--t),filter var(--t);
  white-space:nowrap;
}
.btn-primary{background:var(--g-star);color:#04201E;box-shadow:var(--sh-glow),inset 0 1px 0 rgba(255,255,255,.28);}
.btn-primary:hover{color:#04201E;filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 12px 32px -8px rgba(42,212,198,.55);}
.btn-primary:active{transform:translateY(0) scale(.99);background:var(--c-primary-700);}
.btn-ghost{background:transparent;color:var(--c-text);border-color:var(--c-line-strong);}
.btn-ghost:hover{color:#fff;border-color:var(--c-primary);background:rgba(42,212,198,.08);transform:translateY(-2px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--c-text-2);font-weight:500;}
.link-more .arw{transition:transform var(--t);}
.link-more:hover{color:#fff;}
.link-more:hover .arw{transform:translateX(4px);}

/* ===== 徽章 ===== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:12px;font-weight:600;line-height:1.6;
  background:var(--c-glass);border:1px solid var(--c-line-strong);color:var(--c-text-2);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
.badge-cat{color:var(--c-primary);border-color:rgba(42,212,198,.42);background:rgba(42,212,198,.08);}
.badge-gold{color:var(--c-accent);border-color:rgba(243,192,92,.42);background:rgba(243,192,92,.08);}
.badge-dot{width:6px;height:6px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 8px rgba(42,212,198,.8);}

/* ===== 头部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(8,13,26,.62);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid var(--c-line);
  transition:height var(--t),background var(--t);
}
.header-inner{
  position:relative;display:flex;align-items:center;justify-content:space-between;
  height:76px;gap:16px;
}
.site-header.is-scrolled .header-inner{height:64px;}
.site-header.is-scrolled{background:rgba(8,13,26,.86);}
.nav-side{display:none;align-items:center;gap:4px;flex:1 1 0;}
.nav-side.right{justify-content:flex-end;}
.nav-link{
  position:relative;padding:10px 12px;font-size:15px;color:var(--c-text-2);font-weight:500;
  border-radius:10px;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;border-radius:2px;
  background:var(--g-star);transform:scaleX(0);transform-origin:left center;
  transition:transform 180ms cubic-bezier(.2,.7,.3,1);
}
.nav-link:hover{color:#fff;}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link[aria-current="page"]{color:#fff;}
.nav-link[aria-current="page"]::after{transform:scaleX(1);}
.nav-link[aria-current="page"]::before{
  content:"";position:absolute;left:2px;top:50%;width:4px;height:4px;margin-top:-2px;
  border-radius:50%;background:var(--c-primary);box-shadow:0 0 8px rgba(42,212,198,.9);
}
.brand{
  display:flex;align-items:center;gap:10px;flex:0 0 auto;
  font-size:20px;font-weight:700;color:var(--c-text);letter-spacing:.01em;
}
.brand:hover{color:#fff;}
.brand svg{width:26px;height:26px;flex:0 0 auto;}
.brand-name{background:var(--g-text);-webkit-background-clip:text;background-clip:text;color:transparent;}
.nav-toggle{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:42px;padding:0 10px;border-radius:10px;
  background:var(--c-glass);border:1px solid var(--c-line);
}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--c-text);transition:transform var(--t),opacity var(--t);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-drawer{
  display:none;position:absolute;left:0;right:0;top:100%;
  background:rgba(9,15,29,.97);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--c-line);
  padding:12px 20px 24px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer a{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;font-size:16px;color:var(--c-text);
  border-bottom:1px solid var(--c-line);
}
.mobile-drawer a:last-of-type{border-bottom:0;}
.mobile-drawer .btn{margin-top:16px;}
body.no-scroll{overflow:hidden;}
@media (min-width:992px){
  .nav-side{display:flex;}
  .nav-toggle{display:none;}
  .mobile-drawer{display:none !important;}
}

/* ===== 背景光斑 ===== */
.page-glow{
  position:absolute;inset:0 0 auto 0;height:640px;pointer-events:none;z-index:0;
  background:
    radial-gradient(560px 420px at 18% 10%,rgba(42,212,198,.16),transparent 70%),
    radial-gradient(620px 460px at 86% 22%,rgba(107,107,255,.16),transparent 72%);
}
main{position:relative;}

/* ===== 面包屑 ===== */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--c-text-3);padding:24px 0 0;
}
.breadcrumb a{color:var(--c-text-3);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:rgba(126,168,255,.4);}
.breadcrumb .current{color:var(--c-text-2);}

/* ===== 文章头 ===== */
.article-head{padding:20px 0 34px;border-bottom:1px solid var(--c-line);}
.article-head h1{
  margin-top:18px;
  font-size:clamp(26px,3.4vw,38px);font-weight:700;line-height:1.3;color:#fff;
  max-width:900px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.article-head .lead{margin-top:16px;font-size:16px;color:var(--c-text-2);max-width:820px;}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  margin-top:20px;font-size:13px;color:var(--c-text-3);
}
.meta-row .dot{width:3px;height:3px;border-radius:50%;background:rgba(126,168,255,.45);}

/* ===== 文章布局 ===== */
.article-body{padding:40px 0 8px;}
.article-layout{display:flex;flex-wrap:wrap;}
.article-main{width:100%;}
.side-col{width:100%;margin-top:40px;}
@media (min-width:1024px){
  .article-main{width:calc(100% - 340px);padding-right:48px;}
  .side-col{width:340px;margin-top:0;}
}
.side-sticky{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}

/* ===== 正文排版 ===== */
.article-content{max-width:780px;font-size:16px;line-height:1.85;color:var(--c-text-2);}
.article-content p{margin:0 0 22px;}
.article-content strong{color:var(--c-text);font-weight:600;}
.article-content h2{
  position:relative;margin:48px 0 16px;padding-left:14px;
  font-size:clamp(20px,2.2vw,26px);font-weight:700;line-height:1.4;color:#fff;
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;border-radius:2px;background:var(--g-star);
}
.article-content h3{margin:32px 0 12px;font-size:18px;font-weight:600;color:#fff;}
.article-content h4{margin:24px 0 10px;font-size:16px;font-weight:600;color:var(--c-text);}
.article-content ul,.article-content ol{margin:0 0 22px;padding-left:2px;}
.article-content ul li{position:relative;padding-left:18px;margin-bottom:10px;}
.article-content ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:4px;height:4px;border-radius:50%;
  background:var(--c-primary);box-shadow:0 0 6px rgba(42,212,198,.8);
}
.article-content ol{counter-reset:olnum;}
.article-content ol li{position:relative;padding-left:26px;margin-bottom:10px;counter-increment:olnum;}
.article-content ol li::before{
  content:counter(olnum);position:absolute;left:0;top:0;
  font-family:var(--ff-num);font-size:13px;color:var(--c-accent);line-height:1.85;
}
.article-content blockquote{
  margin:0 0 24px;padding:16px 20px;border-left:3px solid var(--c-primary);border-radius:0 var(--r-sm) var(--r-sm) 0;
  background:var(--c-glass);border-top:1px solid var(--c-line);border-right:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
  color:var(--c-text-2);
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content img{
  width:100%;height:auto;border-radius:12px;border:1px solid rgba(126,168,255,.12);
  margin:8px 0 10px;
}
.article-content figure{margin:24px 0;}
.article-content figcaption{font-size:13px;color:var(--c-text-3);text-align:center;margin-top:8px;}
.article-content a{color:var(--c-primary);border-bottom:1px solid rgba(42,212,198,.35);}
.article-content a:hover{color:#fff;border-color:#fff;}
.article-content table{
  display:block;width:100%;overflow-x:auto;border-collapse:collapse;
  margin:0 0 24px;font-size:14px;border:1px solid var(--c-line);border-radius:var(--r-sm);
}
.article-content th,.article-content td{padding:11px 14px;border-bottom:1px solid var(--c-line);text-align:left;white-space:nowrap;}
.article-content th{background:var(--c-panel);color:var(--c-text);font-weight:600;}
.article-content tbody tr:hover{background:rgba(126,168,255,.05);}
.article-content hr{border:0;height:1px;background:var(--c-line);margin:32px 0;}
.article-content code{
  font-family:var(--ff-num);font-size:14px;padding:2px 6px;border-radius:6px;
  background:rgba(126,168,255,.1);color:#9BEDE2;
}
.article-content pre{
  margin:0 0 24px;padding:18px;border-radius:var(--r-sm);overflow-x:auto;
  background:#070C17;border:1px solid var(--c-line);
}
.article-content pre code{background:transparent;padding:0;}

/* 空态 */
.empty-card{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  min-height:220px;padding:40px 24px;text-align:center;
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.02));
  border:1px solid var(--c-line);border-radius:var(--r-lg);box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.06);
}
.empty-card svg{width:34px;height:34px;color:var(--c-primary);}
.empty-card p{font-size:14px;color:var(--c-text-2);}

/* ===== 侧栏 ===== */
.side-card{
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.02));
  border:1px solid var(--c-line);border-radius:var(--r-md);
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.06);
  backdrop-filter:blur(12px) saturate(130%);-webkit-backdrop-filter:blur(12px) saturate(130%);
  padding:18px;
}
.side-card h3{
  font-size:14px;font-weight:600;color:#fff;letter-spacing:.02em;
  display:flex;align-items:center;gap:8px;margin-bottom:12px;
}
.side-card h3::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--g-star);}
.toc-list a{
  display:block;padding:7px 0 7px 12px;font-size:14px;color:var(--c-text-2);
  border-left:2px solid var(--c-line);line-height:1.6;
}
.toc-list a:hover,.toc-list a.is-active{color:#fff;border-left-color:var(--c-primary);}
.hot-list li{border-bottom:1px solid var(--c-line);}
.hot-list li:last-child{border-bottom:0;}
.hot-list a{display:flex;align-items:flex-start;gap:10px;padding:11px 0;font-size:14px;line-height:1.6;color:var(--c-text-2);}
.hot-list a:hover{color:#fff;}
.hot-list .idx{
  flex:0 0 auto;font-family:var(--ff-num);font-size:13px;color:var(--c-accent);
  width:18px;line-height:1.7;
}
.side-cta{
  background:
    radial-gradient(220px 160px at 10% 0%,rgba(42,212,198,.18),transparent 70%),
    linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--c-line-strong);border-radius:var(--r-md);padding:20px;
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.07);
}
.side-cta h3{font-size:17px;font-weight:600;color:#fff;line-height:1.5;}
.side-cta p{margin:10px 0 16px;font-size:13px;color:var(--c-text-2);line-height:1.7;}

/* ===== 文末 ===== */
.article-foot{padding:32px 0 0;}
.back-row{margin-bottom:32px;}
.back-row a{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--c-text-2);}
.back-row a:hover{color:#fff;}
.back-row a:hover svg{transform:translateX(-4px);}
.back-row svg{width:16px;height:16px;transition:transform var(--t);}

.related{padding:48px 0 0;}
.section-title{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;}
.section-title h2{font-size:clamp(20px,2.4vw,28px);font-weight:700;color:#fff;line-height:1.35;}
.section-title p{margin-top:8px;font-size:14px;color:var(--c-text-3);}
.card-grid{display:flex;flex-wrap:wrap;gap:24px;}
.rel-card{
  flex:1 1 100%;min-width:0;
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.02));
  border:1px solid var(--c-line);border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
  display:flex;flex-direction:column;
}
@media (min-width:640px){.rel-card{flex:1 1 calc(50% - 12px);}}
@media (min-width:1024px){.rel-card{flex:1 1 calc(33.333% - 16px);}}
.rel-card:hover{transform:translateY(-4px);border-color:rgba(42,212,198,.5);box-shadow:var(--sh-2);}
.rel-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;border-bottom:1px solid rgba(126,168,255,.12);}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 420ms cubic-bezier(.2,.7,.3,1);}
.rel-card:hover .rel-thumb img{transform:scale(1.04);}
.rel-thumb .badge{position:absolute;left:12px;top:12px;}
.rel-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-body h3{
  font-size:17px;font-weight:600;color:var(--c-text);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-body p{
  font-size:14px;color:var(--c-text-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--c-text-3);}
.rel-card:hover .rel-foot .arw{transform:translateX(4px);}
.rel-foot .arw{transition:transform var(--t);color:var(--c-primary);}

.prevnext{padding:40px 0 0;}
.pn-grid{display:flex;flex-wrap:wrap;gap:20px;}
.pn-item{
  flex:1 1 100%;min-width:0;display:block;padding:18px 20px;
  background:var(--c-glass);border:1px solid var(--c-line);border-radius:var(--r-md);
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.05);
  transition:transform var(--t),border-color var(--t);
}
@media (min-width:640px){.pn-item{flex:1 1 calc(50% - 10px);}}
.pn-item:hover{transform:translateY(-3px);border-color:rgba(42,212,198,.45);}
.pn-item .lab{font-size:12px;color:var(--c-text-3);letter-spacing:.04em;}
.pn-item strong{display:block;margin-top:8px;font-size:15px;font-weight:600;color:var(--c-text);line-height:1.6;}
.pn-item.right{text-align:right;}

/* ===== CTA 条 ===== */
.cta-strip{padding:48px 0 72px;}
.cta-bar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  padding:26px 28px;border-radius:var(--r-xl);
  background:
    radial-gradient(420px 180px at 8% 0%,rgba(42,212,198,.16),transparent 72%),
    linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--c-line-strong);
  box-shadow:var(--sh-2),inset 0 1px 0 rgba(255,255,255,.07);
}
.cta-bar h2{font-size:clamp(19px,2.2vw,24px);font-weight:700;color:#fff;line-height:1.4;}
.cta-bar p{margin-top:8px;font-size:14px;color:var(--c-text-2);}
.cta-bar .btn{flex:0 0 auto;}
@media (max-width:639px){.cta-bar .btn{width:100%;}}

/* ===== 页脚 ===== */
.site-footer{
  position:relative;margin-top:24px;background:var(--c-void);
  border-top:1px solid var(--c-line);color:var(--c-text-2);
}
.site-footer::before{
  content:"";position:absolute;inset:0 0 auto 0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(42,212,198,.55),transparent);
}
.footer-grid{
  display:flex;flex-wrap:wrap;gap:36px;padding:56px 0 40px;
}
.footer-col{flex:1 1 100%;min-width:0;}
@media (min-width:640px){.footer-col{flex:1 1 calc(50% - 18px);}}
@media (min-width:1024px){
  .footer-brand{flex:1 1 calc(34% - 27px);}
  .footer-col{flex:1 1 calc(22% - 27px);}
}
.footer-brand .brand{font-size:19px;margin-bottom:14px;}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--c-text-3);max-width:340px;}
.footer-col h4{font-size:15px;font-weight:600;color:var(--c-text);margin-bottom:16px;}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul a{font-size:14px;color:var(--c-text-2);}
.footer-col ul a:hover{color:var(--c-primary);}
.contact-list li{
  display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--c-text-2);margin-bottom:12px;
}
.contact-list svg{width:16px;height:16px;flex:0 0 auto;margin-top:5px;color:var(--c-primary);}
.social-row{display:flex;gap:10px;margin-top:18px;}
.social-row a{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:10px;
  background:var(--c-glass);border:1px solid var(--c-line);color:var(--c-text-2);
}
.social-row a:hover{color:var(--c-primary);border-color:rgba(42,212,198,.5);transform:translateY(-2px);}
.social-row svg{width:18px;height:18px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  padding:20px 0 28px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-text-3);
}
.footer-bottom a{color:var(--c-text-3);}
.footer-bottom a:hover{color:var(--c-primary);}

/* ===== 返回顶部 ===== */
.to-top{
  position:fixed;right:20px;bottom:24px;z-index:90;
  width:48px;height:48px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(17,27,51,.72);border:1px solid var(--c-line-strong);color:var(--c-text);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:var(--sh-1);opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity var(--t),transform var(--t),visibility var(--t),box-shadow var(--t),border-color var(--t);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{border-color:var(--c-primary);box-shadow:var(--sh-glow);transform:translateY(-2px);}
.to-top svg{width:18px;height:18px;}

/* ===== 移动端细节 ===== */
@media (max-width:767px){
  .article-head h1{font-size:24px;}
  .breadcrumb{padding-top:18px;}
  .cta-strip{padding:36px 0 56px;}
  .cta-bar{padding:22px 20px;}
}
@media (max-width:479px){
  .brand{font-size:17px;}
  .brand svg{width:22px;height:22px;}
  .article-head h1{font-size:22px;}
}

/* roulang page: category1 */
:root{
  --c-void:#04060D;
  --c-bg:#080D1A;
  --c-bg-2:#0C1426;
  --c-panel:#111B33;
  --c-glass:rgba(255,255,255,.045);
  --c-line:rgba(126,168,255,.14);
  --c-line-strong:rgba(126,168,255,.26);
  --c-primary:#2AD4C6;
  --c-primary-700:#16B3A7;
  --c-second:#6B6BFF;
  --c-accent:#F3C05C;
  --c-text:#E9F1FC;
  --c-text-2:#A7B6CE;
  --c-text-3:#6C7C97;
  --c-success:#3FD68C;
  --c-warn:#FF9F45;
  --g-star:linear-gradient(135deg,#2AD4C6,#6B6BFF);
  --g-mask:linear-gradient(180deg,rgba(4,6,13,.15),rgba(4,6,13,.92));
  --g-text:linear-gradient(90deg,#EAF6FF,#9BEDE2);
  --ff-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  --ff-num:ui-monospace,"SF Mono","JetBrains Mono","Roboto Mono",monospace;
  --r-xs:8px;--r-sm:12px;--r-md:16px;--r-lg:20px;--r-xl:28px;
  --sh-1:0 8px 24px -12px rgba(0,0,0,.9);
  --sh-2:0 24px 60px -28px rgba(0,0,0,.95);
  --sh-glow:0 0 24px -4px rgba(42,212,198,.45);
  --nav-h:76px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body,html{margin:0;padding:0}
body{
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--ff-sans);
  font-size:16px;
  line-height:1.8;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
p{margin:0 0 18px}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.3;letter-spacing:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
::selection{background:rgba(42,212,198,.28);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#060A14}
::-webkit-scrollbar-thumb{background:rgba(126,168,255,.22);border-radius:999px}
::-webkit-scrollbar-thumb:hover{background:rgba(126,168,255,.36)}
:focus-visible{outline:2px solid rgba(42,212,198,.9);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1280px;margin:0 auto;padding:0 40px}
.section{padding:96px 0;position:relative}
.section-alt{background:var(--c-bg-2);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section-head{margin-bottom:40px;max-width:820px}
.section-head h2{font-size:clamp(22px,2.6vw,34px);font-weight:700;line-height:1.3}
.section-head p{margin:12px 0 0;color:var(--c-text-2);font-size:15px;line-height:1.7}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.02em;color:var(--c-primary);margin-bottom:14px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .22s cubic-bezier(.2,.7,.3,1),box-shadow .22s cubic-bezier(.2,.7,.3,1),border-color .22s,background .22s,color .22s,filter .22s;
  white-space:nowrap;line-height:1;
}
.btn-primary{
  background:var(--g-star);color:#04201E;
  box-shadow:var(--sh-glow),inset 0 1px 0 rgba(255,255,255,.35);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 12px 32px -8px rgba(42,212,198,.55)}
.btn-primary:active{transform:translateY(0) scale(.99);background:var(--c-primary-700)}
.btn-ghost{background:transparent;border-color:var(--c-line-strong);color:var(--c-text)}
.btn-ghost:hover{border-color:var(--c-primary);background:rgba(42,212,198,.08);transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px}
.btn-block{width:100%}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--c-text-2);
  transition:color .22s,gap .22s;
}
.btn-text .arrow{transition:transform .22s cubic-bezier(.2,.7,.3,1)}
.btn-text:hover{color:#fff}
.btn-text:hover .arrow{transform:translateX(4px)}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;border-radius:999px;font-size:12px;line-height:1.6;
  background:var(--c-glass);border:1px solid var(--c-line);color:var(--c-text-2);
  backdrop-filter:blur(10px);
}
.badge-cyan{border-color:rgba(42,212,198,.45);color:var(--c-primary);background:rgba(42,212,198,.07)}
.badge-gold{border-color:rgba(243,192,92,.45);color:var(--c-accent);background:rgba(243,192,92,.07)}

/* ---------- 玻璃卡 ---------- */
.glass{
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.07);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.card{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.07);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  transition:transform .22s cubic-bezier(.2,.7,.3,1),border-color .22s,box-shadow .22s;
}
.card:hover{transform:translateY(-4px);border-color:rgba(42,212,198,.5);box-shadow:var(--sh-2),0 0 0 1px rgba(42,212,198,.18)}
.card:focus-within{transform:translateY(-4px);border-color:rgba(42,212,198,.5)}

/* ---------- 顶部导航 ---------- */
.svg-defs{position:absolute;width:0;height:0;overflow:hidden}
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(8,13,26,.6);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid transparent;
  transition:background .22s,border-color .22s,height .22s;
}
.site-header.is-scrolled{background:rgba(8,13,26,.86);border-bottom-color:var(--c-line)}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;
  height:var(--nav-h);gap:20px;
}
.site-header.is-scrolled .nav-wrap{height:64px}
.nav-side{display:flex;align-items:center;gap:28px;flex:1 1 0;min-width:0}
.nav-side.right{justify-content:flex-end}
.nav-link{
  position:relative;font-size:15px;color:var(--c-text-2);
  padding:6px 0;transition:color .22s;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--c-primary);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .18s ease;
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:#fff}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}
.nav-link[aria-current="page"]::before{
  content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--c-primary);box-shadow:var(--sh-glow);
}
.brand{
  display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;
  font-weight:700;font-size:20px;color:#fff;letter-spacing:.02em;
}
.brand svg{width:26px;height:26px;flex:0 0 auto}
.brand-name{white-space:nowrap}
.nav-cta{margin-left:8px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-line);border-radius:12px;
  background:var(--c-glass);cursor:pointer;position:relative;
}
.nav-toggle span{
  position:absolute;left:12px;right:12px;height:1.6px;background:var(--c-text);border-radius:2px;
  transition:transform .22s,opacity .22s,top .22s;
}
.nav-toggle span:nth-child(1){top:15px}
.nav-toggle span:nth-child(2){top:21px}
.nav-toggle span:nth-child(3){top:27px}
.nav-toggle.is-open span:nth-child(1){top:21px;transform:rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){top:21px;transform:rotate(-45deg)}
.mobile-drawer{
  display:none;position:absolute;left:0;right:0;top:100%;
  background:rgba(8,13,26,.96);backdrop-filter:blur(18px);
  border-bottom:1px solid var(--c-line);
  padding:8px 20px 24px;
  transform:translateY(-12px);opacity:0;pointer-events:none;
  transition:transform .22s,opacity .22s;
}
.mobile-drawer.is-open{transform:translateY(0);opacity:1;pointer-events:auto}
.mobile-drawer a{
  display:flex;align-items:center;height:56px;font-size:16px;color:var(--c-text-2);
  border-bottom:1px solid var(--c-line);
}
.mobile-drawer a[aria-current="page"]{color:var(--c-primary)}
.mobile-drawer .btn{margin-top:20px}

/* ---------- Hero ---------- */
.hero-cat{
  position:relative;overflow:hidden;
  padding:76px 0 84px;
  border-bottom:1px solid var(--c-line);
  background-image:
    radial-gradient(560px 380px at 20% 15%, rgba(42,212,198,.18), transparent 70%),
    linear-gradient(180deg, rgba(4,6,13,.74), rgba(4,6,13,.94)),
    url('/assets/images/backpic/back-1.png');
  background-size:auto,auto,cover;
  background-position:center,center,center;
  background-repeat:no-repeat;
}
.hero-cat::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(1.4px 1.4px at 12% 32%,rgba(255,255,255,.35) 50%,transparent 52%),
                   radial-gradient(1.2px 1.2px at 68% 18%,rgba(255,255,255,.28) 50%,transparent 52%),
                   radial-gradient(1.4px 1.4px at 84% 62%,rgba(42,212,198,.5) 50%,transparent 52%),
                   radial-gradient(1.2px 1.2px at 34% 78%,rgba(107,107,255,.45) 50%,transparent 52%);
  opacity:.35;
}
.hero-cat .container{position:relative;z-index:2}
.crumbs{font-size:13px;color:var(--c-text-3);margin-bottom:20px}
.crumbs a{color:var(--c-text-3);transition:color .22s}
.crumbs a:hover{color:var(--c-primary)}
.crumbs span{margin:0 8px;opacity:.6}
.hero-cat h1{
  font-size:clamp(26px,3.4vw,40px);font-weight:700;line-height:1.25;
  margin:18px 0 16px;
}
.hl{background:var(--g-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{color:var(--c-text-2);font-size:16px;line-height:1.8;max-width:560px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-points{display:flex;flex-wrap:wrap;gap:24px;color:var(--c-text-2);font-size:13px}
.hero-points span{display:inline-flex;align-items:center;gap:8px}
.hero-points svg{width:16px;height:16px;color:var(--c-primary);flex:0 0 auto}
.hero-figure{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  border:1px solid var(--c-line);box-shadow:var(--sh-2);
  margin:0;
}
.hero-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s cubic-bezier(.2,.7,.3,1)}
.hero-figure:hover img{transform:scale(1.04)}
.hero-figure::after{
  content:"";position:absolute;inset:0;background:var(--g-mask);pointer-events:none;
}
.hero-figure figcaption{
  position:absolute;left:18px;right:18px;bottom:14px;z-index:2;
  font-size:13px;color:var(--c-text-2);
}

/* ---------- 数据带 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
  background:var(--c-bg-2);
}
.stat-cell{
  padding:32px 24px;border-right:1px solid var(--c-line);
  text-align:left;
}
.stat-cell:last-child{border-right:none}
.stat-num{
  font-family:var(--ff-num);font-variant-numeric:tabular-nums;
  font-size:clamp(28px,3.4vw,40px);font-weight:800;line-height:1.1;
  background:var(--g-star);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-label{margin-top:8px;font-size:13px;color:var(--c-text-3)}

/* ---------- 能力矩阵 ---------- */
.cap-row{padding:24px 0}
.cap-row + .cap-row{border-top:1px dashed rgba(126,168,255,.16)}
.cap-item{padding:26px 0}
.cap-item.tall{padding:34px 0}
.icon-box{
  width:40px;height:40px;border-radius:12px;background:var(--g-star);
  display:inline-flex;align-items:center;justify-content:center;
  color:#04201E;box-shadow:var(--sh-glow);margin-bottom:18px;
}
.icon-box svg{width:22px;height:22px}
.cap-item h3{font-size:19px;font-weight:600;margin-bottom:10px}
.cap-item p{color:var(--c-text-2);font-size:15px;line-height:1.8;margin:0}
.cap-meta{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px}

/* ---------- 步骤条 ---------- */
.step-bar{position:relative;padding-top:8px}
.step-bar::before{
  content:"";position:absolute;top:28px;left:8%;right:8%;height:1px;z-index:0;
  background-image:repeating-linear-gradient(90deg,rgba(126,168,255,.4) 0 8px,transparent 8px 16px);
}
.step{position:relative;z-index:1;padding-right:24px;margin-bottom:28px}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;
  font-family:var(--ff-num);font-variant-numeric:tabular-nums;
  font-size:15px;font-weight:700;color:var(--c-accent);
  background:rgba(8,13,26,.92);border:1px solid rgba(243,192,92,.4);
  box-shadow:0 0 18px -6px rgba(243,192,92,.5);
  margin-bottom:16px;
}
.step h4{font-size:16px;font-weight:600;margin-bottom:8px}
.step p{font-size:14px;color:var(--c-text-2);line-height:1.75;margin:0}

/* ---------- 场景区 ---------- */
.case-main{position:relative;overflow:hidden;border-radius:var(--r-lg);border:1px solid var(--c-line);box-shadow:var(--sh-2)}
.case-main img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s cubic-bezier(.2,.7,.3,1)}
.case-main:hover img{transform:scale(1.04)}
.case-main .case-caption{
  position:absolute;left:0;right:0;bottom:0;padding:24px 22px 20px;z-index:2;
  background:linear-gradient(180deg,rgba(4,6,13,0),rgba(4,6,13,.92));
}
.case-main h3{font-size:20px;font-weight:600;margin:10px 0 6px}
.case-main p{margin:0;font-size:14px;color:var(--c-text-2)}
.mini-case{display:flex;gap:16px;align-items:center;padding:18px}
.mini-case + .mini-case{margin-top:20px}
.mini-thumb{
  width:96px;height:72px;flex:0 0 auto;border-radius:12px;overflow:hidden;
  border:1px solid rgba(126,168,255,.12);
}
.mini-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s cubic-bezier(.2,.7,.3,1)}
.mini-case:hover .mini-thumb img{transform:scale(1.06)}
.mini-case h4{font-size:16px;font-weight:600;margin-bottom:6px}
.mini-case p{margin:0;font-size:13px;color:var(--c-text-2);line-height:1.7}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:840px;margin:0 auto}
.custom-accordion{border:none;background:transparent;margin:0}
.custom-accordion .accordion-item{
  border:0;border-bottom:1px solid var(--c-line);background:transparent;
  transition:background .22s,border-color .22s;
}
.custom-accordion .accordion-item:first-child{border-top:1px solid var(--c-line)}
.custom-accordion .accordion-item.is-active{
  background:var(--c-panel);border-left:2px solid var(--c-primary);
}
.custom-accordion .accordion-title{
  border:0;background:transparent;position:relative;
  padding:22px 56px 22px 20px;font-size:17px;font-weight:600;color:var(--c-text);
  transition:color .22s;
}
.custom-accordion .accordion-title:hover{color:#fff;background:transparent}
.custom-accordion .accordion-title::before{
  content:"＋";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  font-size:17px;color:var(--c-primary);margin:0;width:auto;height:auto;
}
.custom-accordion .is-active > .accordion-title::before{content:"－";color:var(--c-accent)}
.custom-accordion .accordion-content{
  border:0;background:transparent;padding:0 56px 24px 22px;
  color:var(--c-text-2);font-size:15px;line-height:1.8;
}
.custom-accordion .accordion-content p:last-child{margin-bottom:0}

/* ---------- 窄条 CTA ---------- */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  padding:28px 32px;border-radius:var(--r-xl);
  background:linear-gradient(120deg,rgba(42,212,198,.1),rgba(107,107,255,.08));
  border:1px solid var(--c-line-strong);
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.07);
  backdrop-filter:blur(14px) saturate(140%);
  position:relative;overflow:hidden;
}
.cta-bar::before{
  content:"";position:absolute;left:-40px;top:-60px;width:260px;height:180px;
  background:radial-gradient(circle at center,rgba(42,212,198,.22),transparent 70%);
  pointer-events:none;
}
.cta-bar h3{font-size:20px;font-weight:700;margin-bottom:6px}
.cta-bar p{margin:0;color:var(--c-text-2);font-size:14px}
.cta-bar .btn{flex:0 0 auto;position:relative;z-index:1}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-void);position:relative;
  border-top:1px solid var(--c-line);
  padding:72px 0 0;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:180px;pointer-events:none;
  background-image:radial-gradient(1.3px 1.3px at 18% 26%,rgba(255,255,255,.3) 50%,transparent 52%),
                   radial-gradient(1.2px 1.2px at 62% 16%,rgba(42,212,198,.45) 50%,transparent 52%),
                   radial-gradient(1.3px 1.3px at 86% 42%,rgba(107,107,255,.4) 50%,transparent 52%);
  opacity:.3;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;
  padding-bottom:56px;position:relative;z-index:1;
}
.footer-brand p{color:var(--c-text-3);font-size:14px;line-height:1.8;margin:16px 0 20px;max-width:320px}
.footer-col h4{font-size:15px;font-weight:600;color:var(--c-text);margin-bottom:18px}
.footer-col ul li{margin-bottom:12px}
.footer-col ul li a{font-size:14px;color:var(--c-text-3);transition:color .22s}
.footer-col ul li a:hover{color:var(--c-primary)}
.contact-list li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:14px;color:var(--c-text-3);line-height:1.7;min-height:40px;
}
.contact-list svg{width:18px;height:18px;flex:0 0 auto;color:var(--c-primary);margin-top:4px}
.social-row{display:flex;gap:12px}
.social-row a{
  width:38px;height:38px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line);background:var(--c-glass);color:var(--c-text-2);
  transition:color .22s,border-color .22s,transform .22s;
}
.social-row a:hover{color:var(--c-primary);border-color:rgba(42,212,198,.5);transform:translateY(-2px)}
.social-row svg{width:18px;height:18px}
.footer-bottom{
  border-top:1px solid var(--c-line);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--c-text-3);position:relative;z-index:1;
}
.footer-bottom .to-top{color:var(--c-text-3);transition:color .22s}
.footer-bottom .to-top:hover{color:var(--c-primary)}

/* ---------- 返回顶部 ---------- */
.back-top{
  position:fixed;right:24px;bottom:28px;width:48px;height:48px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--c-glass);border:1px solid var(--c-line-strong);
  backdrop-filter:blur(14px);color:var(--c-text-2);cursor:pointer;
  opacity:0;pointer-events:none;transition:opacity .22s,transform .22s,box-shadow .22s,color .22s;
  z-index:70;
}
.back-top.is-visible{opacity:1;pointer-events:auto}
.back-top:hover{color:var(--c-primary);box-shadow:var(--sh-glow);transform:translateY(-2px)}
.back-top svg{width:20px;height:20px}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 32px}
  .section{padding:72px 0}
  .nav-side{gap:20px}
  .nav-link{font-size:14px}
}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:991px){
  .nav-side{display:none}
  .nav-toggle{display:block}
  .nav-wrap{justify-content:space-between}
  .brand{font-size:17px}
  .brand svg{width:22px;height:22px}
  .mobile-drawer{display:block}
  .step-bar::before{display:none}
  .step{padding-right:0}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .hero-cat{padding:48px 0 56px}
  .hero-actions{gap:12px}
  .hero-actions .btn{width:100%}
  .stat-strip{grid-template-columns:1fr 1fr}
  .stat-cell{border-bottom:1px solid var(--c-line);padding:24px 20px}
  .stat-cell:nth-child(2n){border-right:none}
  .stat-cell:nth-last-child(-n+2){border-bottom:none}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:40px}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:24px 22px}
  .cta-bar .btn{width:100%}
  .custom-accordion .accordion-title{padding:18px 48px 18px 16px;font-size:16px}
  .custom-accordion .accordion-content{padding:0 48px 20px 18px;font-size:14px}
  .back-top{right:16px;bottom:18px;width:44px;height:44px}
}
@media (max-width:479px){
  .section{padding:48px 0}
  .hero-cat h1{font-size:30px}
  .hero-points{gap:14px}
  .mini-case{flex-direction:row}
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root{
  --c-void:#04060D;
  --c-bg:#080D1A;
  --c-bg-2:#0C1426;
  --c-panel:#111B33;
  --c-glass:rgba(255,255,255,.045);
  --c-line:rgba(126,168,255,.14);
  --c-line-strong:rgba(126,168,255,.26);
  --c-primary:#2AD4C6;
  --c-primary-700:#16B3A7;
  --c-second:#6B6BFF;
  --c-accent:#F3C05C;
  --c-text:#E9F1FC;
  --c-text-2:#A7B6CE;
  --c-text-3:#6C7C97;
  --c-success:#3FD68C;
  --c-warn:#FF9F45;
  --g-star:linear-gradient(135deg,#2AD4C6,#6B6BFF);
  --g-mask:linear-gradient(180deg,rgba(4,6,13,.15),rgba(4,6,13,.92));
  --g-text:linear-gradient(90deg,#EAF6FF,#9BEDE2);
  --ff-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  --ff-num:ui-monospace,"SF Mono","JetBrains Mono","Roboto Mono",monospace;
  --r-xs:8px;--r-sm:12px;--r-md:16px;--r-lg:20px;--r-xl:28px;
  --sh-1:0 8px 24px -12px rgba(0,0,0,.9);
  --sh-2:0 24px 60px -28px rgba(0,0,0,.95);
  --sh-glow:0 0 24px -4px rgba(42,212,198,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --pad-section:96px;
}
/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--ff-sans);
  font-size:16px;
  line-height:1.8;
  letter-spacing:0;
  color:var(--c-text);
  background-color:var(--c-bg);
  background-image:
    radial-gradient(900px 520px at 12% -6%,rgba(42,212,198,.10),transparent 62%),
    radial-gradient(900px 620px at 88% 8%,rgba(107,107,255,.12),transparent 66%);
  background-repeat:no-repeat;
  background-attachment:fixed;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding-left:0;list-style:none}
img{max-width:100%;height:auto;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease)}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
:focus-visible{outline:2px solid rgba(42,212,198,.9);outline-offset:2px;border-radius:4px}
::selection{background:rgba(42,212,198,.28);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#05080F}
::-webkit-scrollbar-thumb{background:rgba(126,168,255,.22);border-radius:999px}
::-webkit-scrollbar-thumb:hover{background:rgba(126,168,255,.36)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}
.section{padding:var(--pad-section) 0}
.section-alt{background:var(--c-bg-2);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}

/* ============ 通用组件 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:0;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease),filter .22s var(--ease);
}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-primary{background:var(--g-star);color:#04201E;box-shadow:inset 0 1px 0 rgba(255,255,255,.28),var(--sh-glow)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 12px 32px -8px rgba(42,212,198,.55)}
.btn-primary:active{transform:translateY(0) scale(.99);background:var(--c-primary-700);color:#04201E}
.btn-secondary{background:transparent;border-color:var(--c-line-strong);color:var(--c-text)}
.btn-secondary:hover{border-color:var(--c-primary);background:rgba(42,212,198,.08);transform:translateY(-2px);color:#fff}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);height:auto;padding:0;border:0;background:none}
.btn-text .arrow{transition:transform .22s var(--ease)}
.btn-text:hover{color:#fff}
.btn-text:hover .arrow{transform:translateX(4px)}
.btn-block{width:100%}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:12px;font-weight:600;line-height:1.6;
  background:var(--c-glass);border:1px solid var(--c-line-strong);color:var(--c-text-2);
}
.badge-primary{border-color:rgba(42,212,198,.45);color:var(--c-primary);background:rgba(42,212,198,.08)}
.badge-accent{border-color:rgba(243,192,92,.45);color:var(--c-accent);background:rgba(243,192,92,.07)}

.glass{
  position:relative;
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.07);
}

.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:40px}
.section-head h2{font-size:clamp(22px,2.6vw,34px);font-weight:700;line-height:1.3}
.section-head .desc{margin-top:10px;font-size:15px;color:var(--c-text-3);max-width:720px;line-height:1.7}

.num{font-family:var(--ff-num);font-variant-numeric:tabular-nums}
.grad-text{background:var(--g-text);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(8,13,26,.74);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid var(--c-line);
  transition:background .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header.is-scrolled{background:rgba(8,13,26,.9);box-shadow:0 12px 30px -22px rgba(0,0,0,.95)}
.nav-wrap{
  max-width:1280px;margin:0 auto;padding:0 40px;
  height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px;
  transition:height .22s var(--ease);
}
.site-header.is-scrolled .nav-wrap{height:64px}
.nav-side{display:flex;align-items:center;gap:26px;flex:1 1 0;min-width:0}
.nav-side.right{justify-content:flex-end}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  font-size:15px;font-weight:500;color:var(--c-text-2);padding:6px 0;white-space:nowrap;
  transition:color .22s var(--ease);
}
.nav-link::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 .18s var(--ease);
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:#fff}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}
.nav-link[aria-current="page"]::before{
  content:"";width:4px;height:4px;border-radius:50%;background:var(--c-primary);
  margin-right:7px;box-shadow:0 0 8px rgba(42,212,198,.9);flex:0 0 auto;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand svg{width:26px;height:26px;flex:0 0 auto}
.brand-name{font-size:20px;font-weight:700;color:#fff;letter-spacing:0;white-space:nowrap}
.brand:hover .brand-name{color:var(--c-primary)}

.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-xs);
  background:var(--c-glass);border:1px solid var(--c-line);cursor:pointer;
  padding:0;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-text);transition:transform .22s var(--ease),opacity .22s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.mobile-drawer{
  display:none;position:fixed;left:0;right:0;top:60px;bottom:0;z-index:110;
  background:rgba(8,13,26,.96);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-top:1px solid var(--c-line);
  padding:8px 20px 28px;overflow-y:auto;
}
.mobile-drawer.is-open{display:block}
.mobile-drawer a{
  display:flex;align-items:center;min-height:56px;font-size:16px;color:var(--c-text-2);
  border-bottom:1px solid var(--c-line);
}
.mobile-drawer a:hover,.mobile-drawer a[aria-current="page"]{color:#fff}
.mobile-drawer .drawer-cta{margin-top:20px;border-bottom:0}
body.menu-open{overflow:hidden}

/* ============ 分类 Hero（极简） ============ */
.cat-hero{
  position:relative;overflow:hidden;
  min-height:260px;display:flex;align-items:center;
  padding:56px 0;
  background:
    radial-gradient(560px 320px at 14% 0%,rgba(42,212,198,.15),transparent 70%),
    radial-gradient(520px 300px at 92% 110%,rgba(107,107,255,.14),transparent 72%),
    var(--c-bg-2);
  border-bottom:1px solid var(--c-line);
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.3;
  background-image:
    radial-gradient(1px 1px at 12% 28%,rgba(255,255,255,.9),transparent),
    radial-gradient(1px 1px at 32% 72%,rgba(255,255,255,.6),transparent),
    radial-gradient(1px 1px at 56% 22%,rgba(255,255,255,.75),transparent),
    radial-gradient(1px 1px at 76% 62%,rgba(255,255,255,.55),transparent),
    radial-gradient(1px 1px at 88% 34%,rgba(255,255,255,.7),transparent);
  background-size:100% 100%;background-repeat:no-repeat;
}
.cat-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3);margin-bottom:16px;flex-wrap:wrap}
.breadcrumb a{color:var(--c-text-3)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{opacity:.6}
.breadcrumb .current{color:var(--c-text-2)}
.cat-hero h1{
  font-size:clamp(26px,3.4vw,40px);font-weight:700;line-height:1.25;letter-spacing:0;max-width:860px;
}
.cat-hero .lead{margin-top:14px;font-size:16px;color:var(--c-text-2);max-width:760px;line-height:1.8}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}

/* ============ 主体两栏 ============ */
.layout{display:flex;gap:40px;align-items:flex-start}
.toc{
  position:sticky;top:104px;
  padding:22px 20px;border-radius:var(--r-lg);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  border:1px solid var(--c-line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.06);
}
.toc h3{font-size:14px;font-weight:600;color:var(--c-text-3);margin-bottom:14px;letter-spacing:0}
.toc ol{counter-reset:toc}
.toc li{counter-increment:toc}
.toc a{
  display:flex;align-items:flex-start;gap:8px;
  padding:9px 0;font-size:14px;line-height:1.6;color:var(--c-text-2);
  border-bottom:1px dashed rgba(126,168,255,.12);
}
.toc li:last-child a{border-bottom:0}
.toc a::before{
  content:counter(toc,decimal-leading-zero);
  font-family:var(--ff-num);font-size:12px;color:var(--c-accent);line-height:1.9;flex:0 0 auto;
}
.toc a:hover{color:var(--c-primary)}
.toc .toc-cta{margin-top:18px}
.toc .toc-cta .btn{height:42px;font-size:14px;padding:0 14px}

.long-content{max-width:820px}
.long-content h2{
  position:relative;
  font-size:clamp(20px,2.4vw,28px);font-weight:700;line-height:1.35;
  padding-left:16px;margin:0 0 16px;
  scroll-margin-top:112px;
}
.long-content h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;
  background:var(--g-star);opacity:.9;
}
.long-content h2:not(:first-child){margin-top:56px}
.long-content p{font-size:16px;line-height:1.8;color:var(--c-text-2);margin-bottom:22px}
.long-content p strong{color:var(--c-text);font-weight:600}
.figure{
  position:relative;overflow:hidden;border-radius:var(--r-md);
  border:1px solid rgba(126,168,255,.12);margin-bottom:24px;
  background:var(--c-panel);
}
.figure img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s var(--ease)}
.figure::after{content:"";position:absolute;inset:0;background:var(--g-mask);opacity:.55;pointer-events:none}
.figure:hover img{transform:scale(1.04)}
.figure figcaption{position:absolute;left:0;right:0;bottom:0;z-index:2;padding:14px 18px;font-size:13px;color:var(--c-text-2)}

.point-list{margin:0 0 26px}
.point-list li{
  position:relative;padding-left:20px;margin-bottom:12px;
  font-size:15px;line-height:1.75;color:var(--c-text-2);
}
.point-list li::before{
  content:"";position:absolute;left:2px;top:11px;width:6px;height:6px;border-radius:50%;
  background:var(--c-primary);box-shadow:0 0 10px rgba(42,212,198,.75);
}
.point-list li b{color:var(--c-text);font-weight:600}
.point-list .num{color:var(--c-accent)}

/* ============ 对比表 ============ */
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--r-md);border:1px solid var(--c-line)}
.cmp-table{width:100%;min-width:680px;border-collapse:separate;border-spacing:0;font-size:15px}
.cmp-table th,.cmp-table td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--c-line);line-height:1.7;vertical-align:top}
.cmp-table thead th{
  background:var(--c-panel);font-size:14px;font-weight:600;color:var(--c-text);
  letter-spacing:0;border-bottom:1px solid var(--c-line-strong);
}
.cmp-table tbody td{color:var(--c-text-2)}
.cmp-table tbody tr:last-child td{border-bottom:0}
.cmp-table tbody tr:hover td{background:rgba(255,255,255,.03)}
.cmp-table th:first-child,.cmp-table td:first-child{
  position:sticky;left:0;z-index:2;background:var(--c-bg-2);
  font-weight:600;color:var(--c-text);min-width:150px;
}
.cmp-table thead th:first-child{background:var(--c-panel)}
.cmp-table .col-ours{
  background:rgba(42,212,198,.06);
  box-shadow:inset 1px 0 0 rgba(42,212,198,.35),inset -1px 0 0 rgba(42,212,198,.35);
  color:var(--c-text);
}
.cmp-table thead th.col-ours{background:rgba(42,212,198,.12);color:var(--c-primary);box-shadow:inset 1px 0 0 rgba(42,212,198,.35),inset -1px 0 0 rgba(42,212,198,.35),inset 0 1px 0 rgba(42,212,198,.35)}
.cmp-table tbody tr:hover td.col-ours{background:rgba(42,212,198,.1)}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto}
.faq-accordion.accordion{background:transparent;border:0;border-radius:0}
.faq-accordion .accordion-item{
  border:0;border-bottom:1px solid var(--c-line);background:transparent;border-radius:0;
  transition:background .22s var(--ease),box-shadow .22s var(--ease);
}
.faq-accordion .accordion-item.is-active{
  background:var(--c-panel);
  box-shadow:inset 2px 0 0 var(--c-primary);
  border-radius:var(--r-sm);
  border-bottom-color:transparent;
}
.faq-accordion .accordion-title{
  padding:16px 48px 16px 20px;font-size:16px;font-weight:600;color:var(--c-text);
  background:transparent;border:0;line-height:1.6;position:relative;
  transition:color .22s var(--ease);
}
.faq-accordion .accordion-title:hover{color:var(--c-primary)}
.faq-accordion .accordion-title::before{
  content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);
  font-family:var(--ff-num);font-size:20px;font-weight:400;color:var(--c-primary);
  line-height:1;width:auto;height:auto;margin:0;background:none;
}
.faq-accordion .accordion-item.is-active .accordion-title::before{content:"–"}
.faq-accordion .accordion-content{
  padding:0 24px 20px 20px;background:transparent;border:0;
  font-size:15px;line-height:1.8;color:var(--c-text-2);
}

/* ============ 窄条 CTA ============ */
.cta-strip{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  padding:26px 30px;border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(42,212,198,.12),rgba(107,107,255,.1) 62%,rgba(255,255,255,.02));
  border:1px solid var(--c-line-strong);
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.08);
}
.cta-strip h3{font-size:19px;font-weight:700;line-height:1.45}
.cta-strip p{margin-top:6px;font-size:14px;color:var(--c-text-2)}
.cta-strip .strip-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;background:var(--c-void);border-top:1px solid var(--c-line);
  padding:64px 0 28px;overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:180px;pointer-events:none;opacity:.28;
  background-image:
    radial-gradient(1px 1px at 8% 24%,rgba(255,255,255,.85),transparent),
    radial-gradient(1px 1px at 26% 62%,rgba(255,255,255,.55),transparent),
    radial-gradient(1px 1px at 48% 18%,rgba(255,255,255,.7),transparent),
    radial-gradient(1px 1px at 68% 54%,rgba(255,255,255,.5),transparent),
    radial-gradient(1px 1px at 86% 30%,rgba(255,255,255,.65),transparent);
  background-size:100% 100%;background-repeat:no-repeat;
}
.footer-grid{position:relative;display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.8;color:var(--c-text-3);max-width:320px}
.social-row{display:flex;gap:12px;margin-top:18px}
.social-row a{
  width:38px;height:38px;border-radius:var(--r-xs);display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-glass);border:1px solid var(--c-line);color:var(--c-text-2);
  transition:border-color .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.social-row a:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-2px);box-shadow:var(--sh-glow)}
.social-row svg{width:20px;height:20px}
.footer-col h4{font-size:15px;font-weight:600;color:var(--c-text);margin-bottom:18px;letter-spacing:0}
.footer-col ul li{margin-bottom:12px}
.footer-col ul a{font-size:14px;color:var(--c-text-3);line-height:1.7}
.footer-col ul a:hover{color:var(--c-primary)}
.contact-list li{font-size:14px;color:var(--c-text-3);line-height:1.8;margin-bottom:12px}
.contact-list span{color:var(--c-text-2)}
.footer-bottom{
  position:relative;margin-top:48px;padding-top:22px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--c-text-3);
}
.footer-bottom a{color:var(--c-text-3)}
.footer-bottom a:hover{color:var(--c-primary)}

/* ============ 返回顶部 ============ */
.back-to-top{
  position:fixed;right:24px;bottom:24px;z-index:130;
  width:48px;height:48px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(17,27,51,.78);border:1px solid var(--c-line-strong);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  color:var(--c-text);cursor:pointer;opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s,box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.back-to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.back-to-top:hover{border-color:var(--c-primary);box-shadow:var(--sh-glow);color:var(--c-primary)}
.back-to-top svg{width:20px;height:20px}

/* ============ 表单 ============ */
.form-card{padding:28px;border-radius:var(--r-lg)}
.form-card h3{font-size:18px;font-weight:700;margin-bottom:6px}
.form-card .form-tip{margin-bottom:22px;font-size:13px;color:var(--c-text-3)}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;color:var(--c-text-3);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-xs);
  background:rgba(4,6,13,.55);border:1px solid var(--c-line);color:var(--c-text);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
.field textarea{height:auto;min-height:110px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--c-text-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);background:rgba(4,6,13,.75);
  box-shadow:0 0 0 3px rgba(42,212,198,.18);
}
.field select option{background:var(--c-panel);color:var(--c-text)}
.privacy-note{margin-top:12px;font-size:12px;color:var(--c-text-3);line-height:1.7}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 32px}
  .nav-wrap{padding:0 32px}
}
@media (max-width:1023px){
  :root{--pad-section:72px}
  .nav-side{display:none}
  .nav-toggle{display:inline-flex}
  .brand-name{font-size:17px}
  .nav-wrap{height:60px}
  .site-header.is-scrolled .nav-wrap{height:60px}
  .brand{position:absolute;left:50%;transform:translateX(-50%)}
  .nav-wrap{position:relative;justify-content:space-between}
  .layout{flex-direction:column;gap:32px}
  .toc{position:static;width:100%}
  .long-content{max-width:100%}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cat-hero{padding:48px 0}
}
@media (max-width:767px){
  :root{--pad-section:56px}
  .container{padding:0 20px}
  .nav-wrap{padding:0 20px}
  .cat-hero{min-height:0;padding:40px 0}
  .section-head{margin-bottom:28px}
  .cta-strip{padding:22px 20px}
  .cta-strip .strip-actions{width:100%}
  .cta-strip .strip-actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-brand p{max-width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:479px){
  .btn{width:100%}
  .hero-tags .badge{font-size:11px}
  .back-to-top{right:16px;bottom:16px;width:44px;height:44px}
}

/* roulang page: category3 */
:root{
  --c-void:#04060D;
  --c-bg:#080D1A;
  --c-bg-2:#0C1426;
  --c-panel:#111B33;
  --c-glass:rgba(255,255,255,.045);
  --c-line:rgba(126,168,255,.14);
  --c-line-strong:rgba(126,168,255,.26);
  --c-primary:#2AD4C6;
  --c-primary-700:#16B3A7;
  --c-second:#6B6BFF;
  --c-accent:#F3C05C;
  --c-text:#E9F1FC;
  --c-text-2:#A7B6CE;
  --c-text-3:#6C7C97;
  --c-success:#3FD68C;
  --c-warn:#FF9F45;
  --g-star:linear-gradient(135deg,#2AD4C6,#6B6BFF);
  --g-mask:linear-gradient(180deg,rgba(4,6,13,.15),rgba(4,6,13,.92));
  --g-text:linear-gradient(90deg,#EAF6FF,#9BEDE2);
  --r-xs:8px; --r-sm:12px; --r-md:16px; --r-lg:20px; --r-xl:28px;
  --sh-1:0 8px 24px -12px rgba(0,0,0,.9);
  --sh-2:0 24px 60px -28px rgba(0,0,0,.95);
  --sh-glow:0 0 24px -4px rgba(42,212,198,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --ff-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  --ff-num:ui-monospace,"SF Mono","JetBrains Mono","Roboto Mono",monospace;
}

/* ---------- base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote{margin:0;padding:0}
ul,ol{list-style:none}
img{max-width:100%;display:block;border:0}
a{text-decoration:none;color:inherit;transition:color .22s var(--ease),border-color .22s var(--ease),background-color .22s var(--ease)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid rgba(42,212,198,.9);outline-offset:2px;border-radius:6px}
::selection{background:rgba(42,212,198,.28);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#05080F}
::-webkit-scrollbar-thumb{background:#1B2842;border-radius:999px;border:2px solid #05080F}
::-webkit-scrollbar-thumb:hover{background:#2A3D60}

body{
  font-family:var(--ff-sans);
  font-size:16px;line-height:1.8;letter-spacing:.01em;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(900px 620px at 18% 12%, rgba(42,212,198,.10), transparent 62%),
    radial-gradient(860px 580px at 86% 84%, rgba(107,107,255,.13), transparent 64%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.45;
  background-image:
    linear-gradient(rgba(126,168,255,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(126,168,255,.06) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 50% 26%,#000 0%,transparent 72%);
  mask-image:radial-gradient(circle at 50% 26%,#000 0%,transparent 72%);
}
main,header.site-header,footer.site-footer{position:relative;z-index:1}

.container{
  width:100%;max-width:1200px;margin:0 auto;
  padding-left:20px;padding-right:20px;
}
h1,h2,h3,h4{line-height:1.3;font-weight:700}
h1{font-size:clamp(26px,3.4vw,40px);line-height:1.25;font-weight:700}
h2{font-size:clamp(22px,2.6vw,34px);line-height:1.3}
h3{font-size:19px;font-weight:600;line-height:1.45}
h4{font-size:16px;font-weight:600}
p{color:var(--c-text-2)}
.num{font-family:var(--ff-num);font-variant-numeric:tabular-nums}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;letter-spacing:.01em;white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease),filter .22s var(--ease);
}
.btn-primary{
  background:var(--g-star);color:#04201E;border:0;
  box-shadow:var(--sh-glow),inset 0 1px 0 rgba(255,255,255,.28);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 12px 32px -8px rgba(42,212,198,.55),inset 0 1px 0 rgba(255,255,255,.28)}
.btn-primary:active{transform:translateY(0) scale(.99);background:var(--c-primary-700)}
.btn-ghost{
  background:transparent;color:var(--c-text);border:1px solid var(--c-line-strong);
}
.btn-ghost:hover{border-color:var(--c-primary);background:rgba(42,212,198,.08);transform:translateY(-2px);color:#fff}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px}
.btn-block{width:100%}

.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--c-text-2);
}
.text-link .arw{transition:transform .22s var(--ease)}
.text-link:hover{color:#fff}
.text-link:hover .arw{transform:translateX(4px)}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 14px;border-radius:999px;
  font-size:12px;letter-spacing:.02em;
  background:var(--c-glass);border:1px solid var(--c-line);color:var(--c-text-2);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
.badge-cyan{border-color:rgba(42,212,198,.45);color:#9BEDE2;background:rgba(42,212,198,.08)}
.badge-gold{border-color:rgba(243,192,92,.42);color:var(--c-accent);background:rgba(243,192,92,.08)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  border-bottom:1px solid transparent;
  transition:background-color .22s var(--ease),border-color .22s var(--ease),backdrop-filter .22s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(8,13,26,.82);
  border-bottom-color:var(--c-line);
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  height:76px;max-width:1280px;margin:0 auto;padding:0 32px;
  transition:height .22s var(--ease);
}
.site-header.is-scrolled .nav-wrap{height:64px}
.nav-side{display:flex;align-items:center;gap:6px;flex:1 1 0}
.nav-side.right{justify-content:flex-end;gap:12px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  height:40px;padding:0 12px;font-size:15px;color:var(--c-text-2);
  border-radius:10px;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--c-primary);border-radius:2px;
  transform:scaleX(0);transform-origin:center;transition:transform .18s var(--ease);
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:#fff}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}
.nav-link[aria-current="page"]::before{
  content:"";position:absolute;left:2px;top:50%;width:4px;height:4px;border-radius:50%;
  background:var(--c-primary);box-shadow:0 0 8px rgba(42,212,198,.9);transform:translateY(-50%);
}
.brand{
  display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;
  font-weight:700;letter-spacing:.01em;
}
.brand svg{width:28px;height:28px;flex:0 0 auto}
.brand-name{font-size:20px;font-weight:700;color:#fff}
.brand:hover .brand-name{color:#9BEDE2}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--c-line);background:var(--c-glass);
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-text);border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.mobile-drawer{
  display:none;position:fixed;left:0;right:0;top:60px;z-index:59;
  background:rgba(8,13,26,.96);
  border-bottom:1px solid var(--c-line);
  backdrop-filter:blur(18px) saturate(150%);
  -webkit-backdrop-filter:blur(18px) saturate(150%);
  padding:8px 20px 24px;
  transform:translateY(-12px);opacity:0;pointer-events:none;
  transition:transform .22s var(--ease),opacity .22s var(--ease);
  max-height:calc(100vh - 60px);overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateY(0);opacity:1;pointer-events:auto}
.mobile-drawer a{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;font-size:16px;color:var(--c-text);
  border-bottom:1px solid var(--c-line);
}
.mobile-drawer a[aria-current="page"]{color:#9BEDE2}
.mobile-drawer .btn{margin-top:18px}

/* ---------- section base ---------- */
.section{padding:96px 0;position:relative}
.section-alt{background:var(--c-bg-2)}
.section-head{margin-bottom:40px}
.section-head.center{text-align:center;max-width:760px;margin-left:auto;margin-right:auto}
.section-title{color:#fff}
.section-sub{margin-top:12px;font-size:15px;color:var(--c-text-2);line-height:1.8}

/* ---------- hero（居中，全站唯一） ---------- */
.hero-case{
  position:relative;overflow:hidden;text-align:center;
  padding:84px 0 68px;
  border-bottom:1px solid var(--c-line);
}
.hero-case::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  opacity:.3;
}
.hero-case::after{content:"";position:absolute;inset:0;background:var(--g-mask)}
.hero-case .container{position:relative;z-index:2;max-width:900px}
.hero-case h1{margin:20px 0 0;color:#fff}
.hero-case h1 .hl{
  background:var(--g-text);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{margin-top:16px;font-size:16px;color:var(--c-text-2);line-height:1.8}
.hero-stats{
  display:flex;justify-content:center;flex-wrap:wrap;gap:0;
  margin-top:44px;
}
.hero-stats .stat{
  padding:0 40px;border-left:1px solid var(--c-line);
}
.hero-stats .stat:first-child{border-left:0}
.stat-num{
  font-family:var(--ff-num);font-variant-numeric:tabular-nums;
  font-size:clamp(32px,4vw,48px);font-weight:800;line-height:1.1;
  background:linear-gradient(90deg,#2AD4C6,#6B6BFF);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-num small{font-size:.5em;font-weight:700;margin-left:2px;background:none;-webkit-text-fill-color:#9BEDE2}
.stat-label{margin-top:6px;font-size:13px;color:var(--c-text-3)}

/* ---------- filter pills ---------- */
.filter-row{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:center;
  margin-bottom:40px;
}
.filter-pill{
  display:inline-flex;align-items:center;height:38px;padding:0 20px;border-radius:999px;
  font-size:14px;color:var(--c-text-2);
  background:var(--c-glass);border:1px solid var(--c-line);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  transition:transform .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease),background-color .22s var(--ease);
}
.filter-pill:hover{color:#fff;border-color:var(--c-line-strong);transform:translateY(-2px)}
.filter-pill.is-active{
  background:var(--g-star);color:#04201E;border-color:transparent;font-weight:600;
  box-shadow:var(--sh-glow);
}

/* ---------- case wall ---------- */
.case-wall .cell{margin-bottom:24px}
.case-card{
  position:relative;display:block;overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid var(--c-line);
  background:var(--c-glass);
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.07);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.case-card:hover{
  transform:translateY(-4px);
  border-color:rgba(42,212,198,.55);
  box-shadow:var(--sh-2),0 0 0 1px rgba(42,212,198,.18);
}
.case-media{position:relative;overflow:hidden;background:#0A1120}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.case-card:hover .case-media img{transform:scale(1.04)}
.case-media::after{
  content:"";position:absolute;inset:0;background:var(--g-mask);
}
.ratio-tall{aspect-ratio:4/3}
.ratio-wide{aspect-ratio:16/9}
.ratio-band{aspect-ratio:21/9}
.case-overlay{
  position:absolute;left:0;right:0;bottom:0;z-index:3;
  padding:22px 24px 20px;
  transition:transform .22s var(--ease);
}
.case-card:hover .case-overlay{transform:translateY(-4px)}
.case-overlay .badge{margin-bottom:10px}
.case-title{font-size:18px;font-weight:600;color:#fff;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.case-result{
  margin-top:10px;font-size:14px;color:var(--c-text-2);
  display:flex;align-items:center;gap:8px;
}
.case-result .dot{width:4px;height:4px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 8px rgba(42,212,198,.8);flex:0 0 auto}
.case-result strong{font-family:var(--ff-num);font-variant-numeric:tabular-nums;color:var(--c-accent);font-weight:700}
.case-foot{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 24px 18px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-text-3);
}
.case-card:hover .case-foot .arw{transform:translateX(4px)}
.case-foot .arw{transition:transform .22s var(--ease);color:var(--c-primary)}

/* ---------- data strip ---------- */
.data-strip{
  display:flex;flex-wrap:wrap;
  border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--c-line);
  background:var(--c-glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.07);
}
.data-item{
  flex:1 1 25%;min-width:200px;padding:28px 24px;
  border-left:1px solid var(--c-line);
}
.data-item:first-child{border-left:0}
.data-item .stat-num{font-size:clamp(28px,3vw,38px)}
.data-item p{margin-top:8px;font-size:13px;color:var(--c-text-3);line-height:1.7}

/* ---------- FAQ（紧凑版） ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-wrap .accordion{
  background:transparent;border:0;
  border-top:1px solid var(--c-line);
}
.faq-wrap .accordion-item{
  border-bottom:1px solid var(--c-line);background:transparent;
}
.faq-wrap .accordion-title{
  position:relative;
  padding:20px 44px 20px 18px;
  font-size:16px;font-weight:600;color:var(--c-text);
  border:0;background:transparent;
  transition:color .22s var(--ease),background-color .22s var(--ease);
}
.faq-wrap .accordion-title::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:2px;
  background:var(--c-primary);border-radius:2px;
  transform:scaleY(0);transform-origin:top;transition:transform .22s var(--ease);
}
.faq-wrap .accordion-title::after{
  content:"＋";position:absolute;right:16px;top:50%;transform:translateY(-50%);
  font-family:var(--ff-num);font-size:16px;color:var(--c-primary);font-weight:400;
}
.faq-wrap .accordion-item.is-active .accordion-title{background:var(--c-panel);color:#fff}
.faq-wrap .accordion-item.is-active .accordion-title::before{transform:scaleY(1)}
.faq-wrap .accordion-item.is-active .accordion-title::after{content:"－"}
.faq-wrap .accordion-title:hover{background:rgba(255,255,255,.03);color:#fff}
.faq-wrap .accordion-content{
  padding:0 44px 22px 18px;background:var(--c-panel);border:0;
  font-size:15px;line-height:1.8;color:var(--c-text-2);
}

/* ---------- CTA bar ---------- */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:32px 36px;border-radius:var(--r-xl);
  border:1px solid var(--c-line-strong);
  background:linear-gradient(120deg,rgba(42,212,198,.08),rgba(107,107,255,.10));
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.07);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.cta-bar h2{font-size:clamp(20px,2.2vw,26px);color:#fff}
.cta-bar p{margin-top:8px;font-size:14px;color:var(--c-text-2)}
.cta-actions{display:flex;gap:12px;flex:0 0 auto}

/* ---------- footer ---------- */
.site-footer{
  background:var(--c-void);
  border-top:1px solid var(--c-line);
  padding:72px 0 0;position:relative;overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:240px;pointer-events:none;
  background:
    radial-gradient(520px 200px at 12% 0,rgba(42,212,198,.10),transparent 70%),
    radial-gradient(520px 200px at 88% 0,rgba(107,107,255,.12),transparent 70%);
}
.footer-grid{
  position:relative;
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
}
.footer-col h4{color:#fff;margin-bottom:18px;font-size:15px}
.footer-col ul li{margin-bottom:12px}
.footer-col ul a{font-size:14px;color:var(--c-text-2)}
.footer-col ul a:hover{color:var(--c-primary)}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--c-text-3);line-height:1.8;max-width:340px}
.social-row{display:flex;gap:12px;margin-top:20px}
.social-row a{
  width:38px;height:38px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line);background:var(--c-glass);color:var(--c-text-2);
  transition:border-color .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.social-row a svg{width:20px;height:20px}
.social-row a:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-2px)}
.contact-list li{display:flex;gap:10px;font-size:14px;color:var(--c-text-2);margin-bottom:14px;line-height:1.7}
.contact-list svg{width:18px;height:18px;flex:0 0 auto;margin-top:4px;color:var(--c-primary)}
.footer-bottom{
  position:relative;margin-top:56px;padding:22px 0;
  border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--c-text-3);
}
.footer-bottom .to-top-text{
  color:var(--c-text-2);font-size:13px;display:inline-flex;align-items:center;gap:6px;
}
.footer-bottom .to-top-text:hover{color:var(--c-primary)}

/* ---------- back to top ---------- */
.to-top{
  position:fixed;right:24px;bottom:28px;z-index:70;
  width:48px;height:48px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line-strong);background:rgba(17,27,51,.72);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  color:var(--c-text-2);opacity:0;pointer-events:none;
  transition:opacity .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease),color .22s var(--ease);
}
.to-top.is-on{opacity:1;pointer-events:auto}
.to-top:hover{color:#fff;box-shadow:var(--sh-glow);transform:translateY(-2px);border-color:rgba(42,212,198,.6)}
.to-top svg{width:20px;height:20px}

/* ---------- responsive ---------- */
@media screen and (max-width:1279px){
  .nav-wrap{padding:0 24px}
}
@media screen and (max-width:991px){
  .nav-side{display:none}
  .nav-toggle{display:flex}
  .mobile-drawer{display:block}
  .nav-wrap{height:60px;padding:0 20px}
  .site-header.is-scrolled .nav-wrap{height:60px}
  .brand-name{font-size:17px}
  .brand svg{width:24px;height:24px}
  .nav-wrap .brand{order:-1;margin-right:auto}
  .section{padding:72px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media screen and (max-width:767px){
  .section{padding:56px 0}
  .hero-case{padding:56px 0 48px}
  .hero-stats{margin-top:32px;gap:0;width:100%}
  .hero-stats .stat{padding:12px 0 12px 0;border-left:0;border-top:1px solid var(--c-line);flex:1 1 100%}
  .hero-stats .stat:first-child{border-top:0}
  .section-head{margin-bottom:28px}
  .case-overlay{padding:16px 18px}
  .case-foot{padding:12px 18px 16px}
  .data-item{flex:1 1 50%;border-left:0;border-top:1px solid var(--c-line);padding:22px 18px}
  .data-item:nth-child(1),.data-item:nth-child(2){border-top:0}
  .data-item:nth-child(even){border-left:1px solid var(--c-line)}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:26px 22px;gap:22px}
  .cta-actions{flex-direction:column;width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .faq-wrap .accordion-title{padding:18px 40px 18px 16px;font-size:16px}
  .faq-wrap .accordion-content{padding:0 40px 20px 16px}
  .to-top{right:16px;bottom:18px}
}
@media screen and (max-width:479px){
  .container{padding-left:20px;padding-right:20px}
  h1{font-size:26px}
  .brand-name{font-size:17px}
  .stat-num{font-size:30px}
}

/* roulang page: category4 */
:root{
  --c-void:#04060D;
  --c-bg:#080D1A;
  --c-bg-2:#0C1426;
  --c-panel:#111B33;
  --c-glass:rgba(255,255,255,.045);
  --c-line:rgba(126,168,255,.14);
  --c-line-strong:rgba(126,168,255,.26);
  --c-primary:#2AD4C6;
  --c-primary-700:#16B3A7;
  --c-second:#6B6BFF;
  --c-accent:#F3C05C;
  --c-text:#E9F1FC;
  --c-text-2:#A7B6CE;
  --c-text-3:#6C7C97;
  --c-success:#3FD68C;
  --c-warn:#FF9F45;

  --g-star:linear-gradient(135deg,#2AD4C6,#6B6BFF);
  --g-mask:linear-gradient(180deg,rgba(4,6,13,.15),rgba(4,6,13,.92));
  --g-text:linear-gradient(90deg,#EAF6FF,#9BEDE2);

  --r-xs:8px; --r-sm:12px; --r-md:16px; --r-lg:20px; --r-xl:28px; --r-pill:999px;

  --sh-1:0 8px 24px -12px rgba(0,0,0,.9);
  --sh-2:0 24px 60px -28px rgba(0,0,0,.95);
  --sh-glow:0 0 24px -4px rgba(42,212,198,.45);
  --sh-inner:inset 0 1px 0 rgba(255,255,255,.07);

  --ff-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  --ff-num:ui-monospace,"SF Mono","JetBrains Mono","Roboto Mono",monospace;

  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:220ms;
  --container:1200px;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--ff-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6,p,ul,ol,figure,blockquote{margin:0;padding:0;}
h1,h2,h3,h4{line-height:1.3;font-weight:700;}
ul,ol{list-style:none;}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-text-2);text-decoration:none;transition:color var(--dur) var(--ease);}
a:hover{color:var(--c-text);}
button,input,select,textarea{font-family:inherit;font-size:16px;}
:focus-visible{outline:2px solid rgba(42,212,198,.9);outline-offset:2px;}
::selection{background:rgba(42,212,198,.28);color:#fff;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#060A14;}
::-webkit-scrollbar-thumb{background:rgba(126,168,255,.18);border-radius:8px;}
::-webkit-scrollbar-thumb:hover{background:rgba(42,212,198,.35);}

/* 覆盖 Foundation 默认外观 */
.button,.button.primary,.button.secondary{
  background:transparent;color:var(--c-text);border:0;border-radius:var(--r-sm);
  padding:0;margin:0;font-size:inherit;
}
.accordion{border:0;background:transparent;margin:0;}
.accordion-item{border:0;background:transparent;}
.accordion-title{border:0;padding:0;font-size:inherit;color:inherit;background:transparent;}
.accordion-content{border:0;padding:0;background:transparent;color:inherit;display:none;}
.accordion-content.is-active{display:block;}
input,select,textarea{margin:0;}
table{border-collapse:collapse;background:transparent;}

/* ============ 容器与板块 ============ */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 40px;
}
.section{padding:96px 0;position:relative;}
.section-alt{background:var(--c-bg-2);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;line-height:1;letter-spacing:.02em;
  color:var(--c-primary);
  padding:7px 14px;border-radius:var(--r-pill);
  background:var(--c-glass);border:1px solid rgba(42,212,198,.34);
  backdrop-filter:blur(10px);
  margin-bottom:18px;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 8px rgba(42,212,198,.9);}
h1{font-size:clamp(26px,3.4vw,40px);font-weight:700;line-height:1.25;color:var(--c-text);}
h2{font-size:clamp(22px,2.6vw,34px);font-weight:700;line-height:1.3;}
h3{font-size:19px;font-weight:600;line-height:1.45;}
h4{font-size:16px;font-weight:600;}
.section-sub{margin-top:14px;font-size:15px;line-height:1.8;color:var(--c-text-2);}
.lead{font-size:16px;line-height:1.85;color:var(--c-text-2);}
.hl{
  background:var(--g-text);
  -webkit-background-clip:text;background-clip:text;
  color:transparent;-webkit-text-fill-color:transparent;
}
.num{font-family:var(--ff-num);font-variant-numeric:tabular-nums;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;white-space:nowrap;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),
             border-color var(--dur) var(--ease),background-color var(--dur) var(--ease),color var(--dur) var(--ease),filter var(--dur) var(--ease);
}
.btn-primary{
  background:var(--g-star);color:#04201E;
  box-shadow:var(--sh-glow),var(--sh-inner);
}
.btn-primary:hover{
  color:#04201E;transform:translateY(-2px);filter:brightness(1.06);
  box-shadow:0 12px 32px -8px rgba(42,212,198,.55),var(--sh-inner);
}
.btn-primary:active{transform:translateY(0) scale(.99);background:var(--c-primary-700);}
.btn-ghost{
  background:transparent;border-color:var(--c-line-strong);color:var(--c-text);
}
.btn-ghost:hover{
  color:var(--c-text);border-color:var(--c-primary);
  background:rgba(42,212,198,.08);transform:translateY(-2px);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--c-text-2);
  background:none;border:0;padding:0;cursor:pointer;
}
.btn-text span{transition:transform var(--dur) var(--ease);display:inline-block;}
.btn-text:hover{color:#fff;}
.btn-text:hover span{transform:translateX(4px);}

/* ============ 玻璃卡 ============ */
.g-card{
  position:relative;
  border-radius:var(--r-lg);
  border:1px solid var(--c-line);
  background:
    linear-gradient(160deg,rgba(255,255,255,.055),rgba(255,255,255,.012)),
    var(--c-glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-1),var(--sh-inner);
  padding:28px;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.g-card::after{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.10) .6px,transparent .6px);
  background-size:16px 16px;opacity:.4;
}
.g-card > *{position:relative;z-index:1;}
.g-card:hover{
  transform:translateY(-4px);
  border-color:rgba(42,212,198,.5);
  box-shadow:0 26px 60px -30px rgba(0,0,0,.98),var(--sh-inner);
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(8,13,26,.62);
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  border-bottom:1px solid transparent;
  transition:background-color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.site-header.is-scrolled{
  background:rgba(8,13,26,.86);
  border-bottom-color:var(--c-line);
}
.header-inner{
  display:flex;align-items:center;gap:18px;height:76px;
  transition:height var(--dur) var(--ease);
}
.site-header.is-scrolled .header-inner{height:64px;}
.nav-side{display:flex;align-items:center;gap:26px;}
.nav-side.left{flex:1 1 0;justify-content:flex-start;min-width:0;}
.nav-side.right{flex:1 1 0;justify-content:flex-end;min-width:0;}
.nav-link{
  position:relative;font-size:15px;color:var(--c-text-2);padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--c-primary);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform 180ms var(--ease);
}
.nav-link:hover{color:#fff;}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link[aria-current="page"]{color:var(--c-text);}
.nav-link[aria-current="page"]::after{transform:scaleX(1);}
.nav-link[aria-current="page"]::before{
  content:"";position:absolute;left:-12px;top:50%;width:4px;height:4px;border-radius:50%;
  background:var(--c-primary);transform:translateY(-50%);
  box-shadow:0 0 8px rgba(42,212,198,.9);
}
.brand{
  display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;
  color:var(--c-text);
}
.brand svg{width:26px;height:26px;flex:0 0 auto;}
.brand-name{font-size:20px;font-weight:700;letter-spacing:.01em;color:var(--c-text);}
.brand:hover .brand-name{color:#fff;}

.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;
  border:1px solid var(--c-line);background:transparent;cursor:pointer;
  padding:0;align-items:center;justify-content:center;flex-direction:column;
}
.nav-toggle span{
  display:block;width:18px;height:1.5px;background:var(--c-text);border-radius:2px;
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.nav-toggle span+span{margin-top:4px;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(5.5px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg);}

.mobile-drawer{
  position:fixed;left:0;right:0;top:60px;z-index:110;
  background:rgba(10,16,30,.97);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--c-line);
  padding:6px 0 22px;
  transform:translateY(-130%);
  transition:transform 280ms var(--ease);
  max-height:calc(100vh - 60px);overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateY(0);}
.drawer-link{
  display:flex;align-items:center;height:56px;padding:0 20px;font-size:16px;
  color:var(--c-text-2);border-bottom:1px solid rgba(126,168,255,.08);
}
.drawer-link[aria-current="page"]{color:var(--c-primary);}
.drawer-cta{padding:20px 20px 0;}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  padding:72px 0 80px;
  background:var(--c-bg);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(560px 420px at 20% 15%,rgba(42,212,198,.16),transparent 70%),
    radial-gradient(620px 480px at 85% 80%,rgba(107,107,255,.18),transparent 72%),
    linear-gradient(rgba(126,168,255,.06) 1px,transparent 1px) 0 0/64px 64px,
    linear-gradient(90deg,rgba(126,168,255,.06) 1px,transparent 1px) 0 0/64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,.15));
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,.15));
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.35;
  background-image:
    radial-gradient(rgba(255,255,255,.55) .8px,transparent .8px),
    radial-gradient(rgba(154,237,226,.45) .7px,transparent .7px);
  background-size:120px 120px,190px 190px;
  background-position:10px 20px,60px 90px;
}
.hero .container{position:relative;z-index:2;}
.hero-grid{align-items:center;}
.hero-copy .lead{margin-top:20px;max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-points{display:flex;flex-wrap:wrap;gap:24px;margin-top:30px;}
.hero-point{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-text-2);}
.hero-point svg{width:18px;height:18px;color:var(--c-primary);flex:0 0 auto;}
.hero-media{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--c-line);box-shadow:var(--sh-2);
  aspect-ratio:4/3;background:var(--c-panel);
}
.hero-media img{width:100%;height:100%;object-fit:cover;opacity:.55;}
.hero-media::after{content:"";position:absolute;inset:0;background:var(--g-mask);}
.hero-media .media-tag{
  position:absolute;left:22px;bottom:22px;z-index:2;
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:var(--r-pill);
  background:rgba(8,13,26,.7);border:1px solid var(--c-line-strong);
  backdrop-filter:blur(10px);
  font-size:13px;color:var(--c-text);
}
.hero-media .media-tag i{width:6px;height:6px;border-radius:50%;background:var(--c-success);box-shadow:0 0 8px rgba(63,214,140,.9);}

/* ============ 数据带 ============ */
.stat-band{
  background:var(--c-bg-2);
  border-top:1px solid var(--c-line);
  border-bottom:1px solid var(--c-line);
  padding:36px 0;
}
.stat-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));}
.stat-item{
  padding:6px 24px;text-align:center;border-left:1px solid var(--c-line);
}
.stat-item:first-child{border-left:0;}
.stat-value{
  font-family:var(--ff-num);font-variant-numeric:tabular-nums;
  font-size:clamp(28px,3.4vw,42px);font-weight:800;line-height:1.15;
  background:var(--g-star);-webkit-background-clip:text;background-clip:text;
  color:transparent;-webkit-text-fill-color:transparent;
}
.stat-label{margin-top:8px;font-size:13px;color:var(--c-text-3);}

/* ============ 通用栅格补丁 ============ */
.grid-gap{margin-left:-14px !important;margin-right:-14px !important;margin-bottom:-28px;}
.grid-gap > .cell{padding-left:14px;padding-right:14px;margin-bottom:28px;}

/* ============ 时间轴 ============ */
.timeline{position:relative;max-width:900px;margin:0 auto;}
.timeline::before{
  content:"";position:absolute;left:150px;top:14px;bottom:14px;width:1px;
  background:linear-gradient(180deg,rgba(42,212,198,.7),rgba(107,107,255,.45),rgba(126,168,255,.05));
}
.tl-row{
  position:relative;
  display:grid;grid-template-columns:130px minmax(0,1fr);gap:44px;
  padding-bottom:44px;
}
.tl-row:last-child{padding-bottom:0;}
.tl-phase{
  font-size:14px;color:var(--c-text-3);text-align:right;padding-top:2px;line-height:1.6;
}
.tl-phase strong{display:block;color:var(--c-text-2);font-weight:600;font-size:14px;}
.tl-node{
  position:absolute;left:144px;top:7px;width:13px;height:13px;border-radius:50%;
  background:var(--c-bg);border:1px solid var(--c-line-strong);
  box-shadow:0 0 0 4px rgba(8,13,26,.9);
}
.tl-row.is-active .tl-node{
  background:var(--c-accent);border-color:var(--c-accent);
  box-shadow:0 0 0 4px rgba(8,13,26,.9),0 0 16px rgba(243,192,92,.7);
}
.tl-body h3{margin-bottom:10px;}
.tl-body p{color:var(--c-text-2);font-size:15px;line-height:1.85;}
.tl-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px;}
.tag{
  display:inline-flex;align-items:center;padding:5px 12px;border-radius:var(--r-pill);
  font-size:12px;line-height:1.6;color:var(--c-text-2);
  background:var(--c-glass);border:1px solid var(--c-line);
}
.tag-accent{color:var(--c-accent);border-color:rgba(243,192,92,.42);}

/* ============ 资质与团队 ============ */
.team-card{padding:34px 32px;}
.team-icon{
  width:44px;height:44px;border-radius:12px;background:var(--g-star);
  display:flex;align-items:center;justify-content:center;color:#04201E;
  box-shadow:var(--sh-glow);margin-bottom:20px;
}
.team-icon svg{width:22px;height:22px;}
.team-card h3{margin-bottom:14px;}
.team-list{margin-top:16px;}
.team-list li{
  position:relative;padding-left:18px;font-size:14px;line-height:1.85;color:var(--c-text-2);
}
.team-list li+li{margin-top:6px;}
.team-list li::before{
  content:"";position:absolute;left:0;top:11px;width:4px;height:4px;border-radius:50%;
  background:var(--c-primary);
}

/* ============ 服务保障 ============ */
.guard-copy{max-width:460px;}
.guard-copy h2{margin-bottom:16px;}
.guard-copy .lead{margin-bottom:26px;}
.guard-list{display:grid;gap:18px;}
.guard-item{
  display:flex;gap:16px;padding:20px 22px;border-radius:var(--r-md);
  border:1px solid var(--c-line);background:var(--c-glass);
  transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.guard-item:hover{border-color:rgba(42,212,198,.45);transform:translateY(-2px);background:rgba(42,212,198,.05);}
.guard-item svg{width:22px;height:22px;color:var(--c-primary);flex:0 0 auto;margin-top:4px;}
.guard-item h4{margin-bottom:6px;}
.guard-item p{font-size:14px;color:var(--c-text-2);line-height:1.8;}

/* ============ FAQ ============ */
.accordion-wrap{
  max-width:860px;margin:0 auto;
  border-radius:var(--r-lg);border:1px solid var(--c-line);
  background:var(--c-glass);backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-1),var(--sh-inner);
  overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item:last-child{border-bottom:0;}
.faq-item .accordion-title{
  position:relative;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 26px;font-size:17px;font-weight:600;color:var(--c-text);
  cursor:pointer;transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease);
  border-left:2px solid transparent;
}
.faq-item .accordion-title:hover{background:rgba(255,255,255,.03);color:#fff;}
.faq-item .accordion-title::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--c-primary);
  transform:scaleY(0);transform-origin:top;transition:transform var(--dur) var(--ease);
}
.faq-item.is-active .accordion-title{background:var(--c-panel);color:#fff;}
.faq-item.is-active .accordion-title::before{transform:scaleY(1);}
.faq-icon{
  position:relative;width:18px;height:18px;flex:0 0 auto;
  transition:transform var(--dur) var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:2px;
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.faq-icon::before{left:0;top:8px;width:18px;height:1.5px;}
.faq-icon::after{top:0;left:8px;width:1.5px;height:18px;}
.faq-item.is-active .faq-icon{transform:rotate(90deg);}
.faq-item.is-active .faq-icon::after{opacity:0;}
.faq-item .accordion-content{padding:0 26px 24px;font-size:15px;line-height:1.85;color:var(--c-text-2);}
.faq-item .accordion-content p{max-width:700px;}

/* ============ 联系区 ============ */
.contact-head{max-width:720px;margin-bottom:40px;}
.contact-list{display:grid;gap:2px;}
.contact-line{
  display:flex;align-items:center;gap:14px;min-height:48px;padding:10px 0;
  border-bottom:1px solid var(--c-line);font-size:15px;color:var(--c-text-2);
}
.contact-line:last-child{border-bottom:0;}
.contact-line svg{width:20px;height:20px;color:var(--c-primary);flex:0 0 auto;}
.contact-line b{color:var(--c-text);font-weight:600;margin-right:6px;}
.contact-note{
  margin-top:22px;padding:16px 18px;border-radius:var(--r-md);
  border:1px dashed rgba(243,192,92,.32);background:rgba(243,192,92,.05);
  font-size:13px;line-height:1.8;color:var(--c-text-2);
}
.form-card{padding:34px 32px;}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.field{display:flex;flex-direction:column;}
.field.full{grid-column:1 / -1;}
.field label{font-size:13px;color:var(--c-text-3);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;
  color:var(--c-text);background:rgba(8,13,26,.72);
  border:1px solid var(--c-line);border-radius:var(--r-xs);
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.field textarea{height:auto;min-height:120px;padding:12px 14px;line-height:1.75;resize:vertical;}
.field select{
  appearance:none;-webkit-appearance:none;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23A7B6CE' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;
  padding-right:40px;
}
.field input::placeholder,.field textarea::placeholder{color:var(--c-text-3);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);background:rgba(8,13,26,.92);
  box-shadow:0 0 0 3px rgba(42,212,198,.18);
}
.form-foot{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  margin-top:24px;
}
.form-privacy{font-size:12px;line-height:1.7;color:var(--c-text-3);max-width:420px;}

/* ============ 窄条 CTA ============ */
.cta-strip{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  padding:28px 32px;border-radius:var(--r-xl);
  border:1px solid var(--c-line);
  background:
    radial-gradient(400px 200px at 6% 0%,rgba(42,212,198,.14),transparent 70%),
    linear-gradient(150deg,rgba(255,255,255,.06),rgba(255,255,255,.012)),
    var(--c-glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-1),var(--sh-inner);
}
.cta-strip h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:8px;}
.cta-strip p{font-size:14px;color:var(--c-text-2);}
.cta-strip .cta-strip-copy{max-width:640px;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  margin-top:96px;
  background:var(--c-void);
  border-top:1px solid var(--c-line);
  padding:72px 0 0;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:120px;pointer-events:none;opacity:.3;
  background-image:radial-gradient(rgba(255,255,255,.5) .7px,transparent .7px);
  background-size:130px 130px;
}
.site-footer .container{position:relative;z-index:1;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:56px;
}
.footer-col h4{font-size:15px;color:var(--c-text);margin-bottom:20px;}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--c-text-3);max-width:340px;}
.social-row{display:flex;gap:12px;margin-top:22px;}
.social-row a{
  width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line);background:var(--c-glass);color:var(--c-text-2);
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.social-row a:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-2px);}
.social-row svg{width:18px;height:18px;}
.footer-col ul li+li{margin-top:12px;}
.footer-col ul a{font-size:14px;color:var(--c-text-3);}
.footer-col ul a:hover{color:var(--c-primary);}
.footer-contact li{
  display:flex;gap:10px;font-size:14px;color:var(--c-text-3);line-height:1.8;
}
.footer-contact li+li{margin-top:12px;}
.footer-contact svg{width:16px;height:16px;color:var(--c-primary);flex:0 0 auto;margin-top:5px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  border-top:1px solid var(--c-line);padding:22px 0 28px;
  font-size:13px;color:var(--c-text-3);
}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:28px;z-index:130;
  width:48px;height:48px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line-strong);background:rgba(17,27,51,.7);
  backdrop-filter:blur(12px);color:var(--c-text-2);cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur),border-color var(--dur) var(--ease),color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{border-color:var(--c-primary);color:var(--c-primary);box-shadow:var(--sh-glow);}
.to-top svg{width:20px;height:20px;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 32px;}
}
@media (max-width:1023px){
  .section{padding:72px 0;}
  .hero{padding:56px 0 64px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .stat-row{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat-item:nth-child(3){border-left:0;}
  .stat-item{padding:16px 20px;}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--c-line);}
}
@media (max-width:991px){
  .nav-side{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{height:60px;}
  .site-header.is-scrolled .header-inner{height:60px;}
  .brand{margin-right:auto;}
  .brand-name{font-size:17px;}
  .brand svg{width:22px;height:22px;}
  .hero-grid{gap:40px;}
  .hero-copy{order:1;}
  .hero-media-cell{order:2;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .hero{padding:48px 0 56px;}
  .section-head{margin-bottom:28px;}
  .g-card{padding:22px;}
  .team-card{padding:26px 22px;}
  .form-card{padding:26px 22px;}
  .form-grid{grid-template-columns:1fr;}
  .form-foot{flex-direction:column;align-items:stretch;}
  .form-foot .btn{width:100%;}
  .timeline::before{left:5px;}
  .tl-row{grid-template-columns:1fr;gap:10px;padding-left:30px;padding-bottom:36px;}
  .tl-node{left:0;top:6px;}
  .tl-phase{text-align:left;}
  .tl-phase strong{display:inline;}
  .cta-strip{padding:24px 22px;flex-direction:column;align-items:flex-start;}
  .cta-strip .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .faq-item .accordion-title{padding:18px 18px;font-size:16px;}
  .faq-item .accordion-content{padding:0 18px 20px;}
  .hero-actions .btn{width:100%;}
  .hero-points{gap:14px 20px;}
  .to-top{right:16px;bottom:20px;width:44px;height:44px;}
}
@media (max-width:519px){
  .stat-row{grid-template-columns:1fr;}
  .stat-item{border-left:0;}
  .stat-item + .stat-item{border-top:1px solid var(--c-line);}
  .stat-item:nth-child(2){border-bottom:0;}
  .grid-gap{margin-left:-10px !important;margin-right:-10px !important;}
  .grid-gap > .cell{padding-left:10px;padding-right:10px;}
}