/* roulang page: index */
/* ==================== 设计令牌 ==================== */
:root{
  --p-50:rgba(91,61,232,.08);
  --p-100:rgba(91,61,232,.16);
  --p-300:rgba(91,61,232,.40);
  --p-600:#5B3DE8;
  --p-900:#2A1B6E;
  --a-50:rgba(23,184,176,.10);
  --a-300:rgba(23,184,176,.35);
  --a-500:#17B8B0;
  --act:#FF7A3D;
  --act-50:rgba(255,122,61,.12);
  --ok:#2FA36B;
  --warn:#E8A33D;
  --err:#E0564B;
  --bg:#F7F6FC;
  --bg-alt:#EFEEF9;
  --dark:#0F0C22;
  --t1:#1A1830;
  --t2:#5A5773;
  --t3:#8A879E;
  --td1:#EDEBFA;
  --td2:#A9A5C6;
  --line:#E5E3F2;
  --line-d:rgba(255,255,255,.12);
  --grad:linear-gradient(135deg,#5B3DE8 0%,#17B8B0 100%);
  --r-xs:12px;--r-sm:16px;--r-md:18px;--r-lg:24px;--r-xl:28px;--r-pill:999px;
  --sh1:0 6px 20px rgba(26,24,48,.06);
  --sh2:0 16px 40px rgba(91,61,232,.16);
  --sh3:0 10px 30px rgba(15,12,34,.28);
  --ec:180ms ease-out;
  --em:240ms cubic-bezier(.2,.8,.2,1);
  --sec:104px;
}
/* ==================== 基础重置 ==================== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:110px;}
body{margin:0;background:var(--bg);color:var(--t1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;line-height:1.8;-webkit-font-smoothing:antialiased;}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--ec);}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p,figure{margin:0;}
input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--p-600);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
/* ==================== 容器 / 板块 ==================== */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:var(--sec) 0;position:relative;}
.section--alt{background:var(--bg-alt);}
.section--dark{background:var(--dark);color:var(--td1);}
.section-head{max-width:720px;margin-bottom:52px;}
.section-head h2{position:relative;padding-left:18px;font-size:32px;line-height:1.35;font-weight:700;letter-spacing:-.02em;}
.section-head h2::before{content:"";position:absolute;left:0;top:.2em;width:5px;height:.86em;border-radius:3px;background:var(--grad);}
.section-head p{margin-top:14px;color:var(--t2);font-size:16px;}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head--center h2{padding-left:0;}
.section-head--center h2::before{display:none;}
/* ==================== 按钮 ==================== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15.5px;font-weight:600;letter-spacing:.01em;white-space:nowrap;
  transition:transform var(--em),box-shadow var(--em),background-color var(--ec),color var(--ec),border-color var(--ec),filter var(--ec);}
.btn--primary{background:var(--grad);color:#fff;box-shadow:0 8px 22px rgba(91,61,232,.28);}
.btn--primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 14px 32px rgba(91,61,232,.34);}
.btn--ghost{border:1px solid var(--p-300);color:var(--p-600);background:transparent;}
.btn--ghost:hover{background:var(--p-50);border-color:var(--p-600);}
.btn--ghost-light{border:1px solid rgba(255,255,255,.34);color:var(--td1);background:transparent;}
.btn--ghost-light:hover{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.6);}
.btn--sm{min-height:38px;padding:0 18px;font-size:14px;}
.btn--block{width:100%;}
.btn--text{min-height:auto;padding:0;color:var(--p-600);font-weight:600;gap:6px;}
.btn--text i{transition:transform var(--em);}
.btn--text:hover i{transform:translateX(4px);}
.btn--text:hover{color:var(--a-500);}
/* ==================== 徽章 / 标签 ==================== */
.badge{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:var(--r-pill);font-size:13px;font-weight:600;line-height:1;}
.badge--primary{background:var(--p-50);color:var(--p-600);border:1px solid var(--p-100);}
.badge--accent{background:var(--a-50);color:#0E8C86;border:1px solid var(--a-300);}
.badge--action{background:var(--act-50);color:#C4520E;border:1px solid rgba(255,122,61,.3);}
.badge--muted{background:rgba(90,87,115,.09);color:var(--t2);border:1px solid rgba(90,87,115,.14);}
/* ==================== 顶部信息条 ==================== */
.topbar{background:var(--dark);color:var(--td2);font-size:13px;}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;min-height:38px;gap:16px;}
.topbar__left{display:flex;align-items:center;gap:12px;min-width:0;}
.topbar__domain{color:var(--td1);font-weight:600;letter-spacing:.02em;}
.topbar__tip{color:var(--td2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar__right{display:flex;align-items:center;gap:18px;flex-shrink:0;}
.topbar__link{color:var(--td2);}
.topbar__link:hover{color:var(--a-500);}
.topbar__cta{color:#fff;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.topbar__cta i{transition:transform var(--em);}
.topbar__cta:hover{color:var(--act);}
.topbar__cta:hover i{transform:translateX(3px);}
/* ==================== 主导航 ==================== */
.site-header{position:sticky;top:0;z-index:60;background:rgba(247,246,252,0);transition:background var(--ec),box-shadow var(--ec),backdrop-filter var(--ec);}
.site-header.is-scrolled{background:rgba(255,255,255,.92);box-shadow:0 1px 0 var(--line),0 8px 24px rgba(26,24,48,.06);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);}
.site-header__inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:68px;}
.brand{display:inline-flex;align-items:center;gap:11px;flex-shrink:0;}
.brand__mark{position:relative;width:34px;height:34px;border-radius:11px;background:var(--grad);display:inline-flex;align-items:center;justify-content:center;box-shadow:0 6px 16px rgba(91,61,232,.3);}
.brand__mark i{position:absolute;background:#fff;border-radius:50%;}
.brand__mark i:nth-child(1){width:6px;height:6px;top:9px;left:9px;}
.brand__mark i:nth-child(2){width:4px;height:4px;top:16px;left:19px;opacity:.85;}
.brand__mark i:nth-child(3){width:3px;height:3px;top:11px;left:21px;opacity:.7;}
.brand__text{font-size:19px;font-weight:800;letter-spacing:-.01em;color:var(--t1);}
.main-nav ul{display:flex;align-items:center;gap:6px;}
.main-nav a{position:relative;display:inline-flex;align-items:center;height:44px;padding:0 14px;font-size:15px;font-weight:500;color:var(--t2);border-radius:var(--r-xs);}
.main-nav a::after{content:"";position:absolute;left:14px;right:14px;bottom:8px;height:2px;border-radius:2px;background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform var(--em);}
.main-nav a:hover{color:var(--t1);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--p-600);font-weight:600;}
.main-nav a.is-active::after{background:var(--act);transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);align-items:center;justify-content:center;flex-direction:column;gap:5px;background:#fff;}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--t1);transition:transform var(--em),opacity var(--ec);}
.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);}
/* ==================== Hero ==================== */
.hero{position:relative;overflow:hidden;background:var(--dark);color:var(--td1);padding:calc(var(--sec) * .8) 0 calc(var(--sec) * .9);}
.hero__bg{position:absolute;inset:0;background:linear-gradient(135deg,#2A1B6E 0%,#0F0C22 46%,#0C2A2E 100%);}
.hero__bg::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.42) 1px,transparent 1px),radial-gradient(rgba(255,255,255,.22) 1px,transparent 1px);background-size:190px 190px,110px 110px;background-position:12px 22px,60px 70px;opacity:.5;animation:breathe 5.4s ease-in-out infinite;pointer-events:none;}
@keyframes breathe{0%,100%{opacity:.34}50%{opacity:.6}}
.hero__grid{position:absolute;inset:0;background-image:linear-gradient(to right,rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(to bottom,rgba(255,255,255,.055) 1px,transparent 1px);background-size:96px 96px;pointer-events:none;}
.hero__inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,6fr) minmax(0,6fr);gap:64px;align-items:center;}
.hero__eyebrow{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:var(--r-pill);background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);color:#D9D5F5;font-size:13px;font-weight:600;letter-spacing:.04em;}
.hero__eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--act);box-shadow:0 0 0 4px rgba(255,122,61,.18);}
.hero__title{margin-top:24px;font-size:48px;line-height:1.28;font-weight:800;letter-spacing:-.02em;color:#fff;}
.hero__sub{margin-top:20px;font-size:18px;line-height:1.7;color:var(--td2);max-width:30em;}
.hero__actions{margin-top:34px;display:flex;flex-wrap:wrap;gap:14px;}
.hero__stats{margin-top:46px;display:flex;flex-wrap:wrap;gap:14px;}
.hero__stats li{display:flex;flex-direction:column;gap:2px;padding:14px 20px;border-radius:var(--r-md);background:rgba(255,255,255,.06);border:1px solid var(--line-d);min-width:132px;}
.hero__stats strong{font-size:22px;font-weight:800;line-height:1.2;background:linear-gradient(135deg,#A391FF 0%,#4FE3DA 100%);-webkit-background-clip:text;background-clip:text;color:transparent;font-variant-numeric:tabular-nums;}
.hero__stats span{font-size:13px;color:var(--td2);}
.hero__visual{position:relative;}
.hero-card{position:relative;border-radius:var(--r-xl);overflow:hidden;border:1px solid var(--line-d);box-shadow:var(--sh3);aspect-ratio:4/3.1;background:#141029;}
.hero-card__bg{width:100%;height:100%;object-fit:cover;opacity:.62;}
.hero-card__panel{position:absolute;left:22px;right:22px;bottom:22px;border-radius:var(--r-md);overflow:hidden;border:1px solid rgba(255,255,255,.18);background:rgba(15,12,34,.72);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);}
.hero-card__cover{width:100%;aspect-ratio:16/8;object-fit:cover;}
.hero-card__meta{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 16px;font-size:13px;color:var(--td2);}
.dots{display:inline-flex;gap:5px;}
.dots i{width:7px;height:7px;border-radius:50%;background:rgba(255,255,255,.28);}
.dots i:first-child{background:var(--act);}
/* ==================== 卖点区 ==================== */
.features__grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch;}
.fcard{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh1);overflow:hidden;transition:transform var(--em),box-shadow var(--em),border-color var(--ec);}
.fcard:hover{transform:translateY(-4px);box-shadow:var(--sh2);border-color:var(--p-300);}
.fcard__media{overflow:hidden;}
.fcard__media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform var(--em);}
.fcard:hover .fcard__media img{transform:scale(1.03);}
.fcard__body{padding:26px 28px 30px;}
.fcard__body h3{font-size:22px;font-weight:700;letter-spacing:-.01em;}
.fcard__body p{margin-top:12px;color:var(--t2);font-size:15px;}
.fcard__list{margin-top:20px;display:grid;gap:12px;}
.fcard__list li{display:flex;gap:10px;font-size:15px;color:var(--t2);}
.fcard__list i{color:var(--a-500);margin-top:7px;font-size:13px;}
.fside{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.fside .fcard__body{padding:24px 26px;}
.fside h3{font-size:18px;}
.fside .fcard__body p{font-size:14.5px;margin-top:10px;}
.fside .badge{margin-bottom:14px;}
.iconstrip{margin-top:24px;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.iconstrip li{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:22px 22px 24px;box-shadow:var(--sh1);transition:transform var(--em),box-shadow var(--em),border-color var(--ec);}
.iconstrip li:hover{transform:translateY(-4px);box-shadow:var(--sh2);border-color:var(--p-300);}
.iconstrip i.ico{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:13px;background:var(--p-50);color:var(--p-600);font-size:17px;margin-bottom:14px;}
.iconstrip li:nth-child(2) i.ico,.iconstrip li:nth-child(4) i.ico{background:var(--a-50);color:#0E8C86;}
.iconstrip h4{font-size:16.5px;font-weight:700;}
.iconstrip p{margin-top:8px;font-size:14px;color:var(--t3);}
/* ==================== 演示区 ==================== */
.demo-tabs{display:flex;gap:10px;margin-bottom:34px;flex-wrap:wrap;}
.demo-tabs button{height:40px;padding:0 20px;border-radius:var(--r-pill);font-size:14.5px;font-weight:600;color:var(--t2);border:1px solid var(--line);background:#fff;transition:all var(--ec);}
.demo-tabs button:hover{border-color:var(--p-300);color:var(--p-600);}
.demo-tabs button.is-active{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 8px 20px rgba(91,61,232,.24);}
.demo-track{display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:10px;margin:0 -4px;padding-left:4px;padding-right:4px;}
.demo-track::-webkit-scrollbar{height:6px;}
.demo-track::-webkit-scrollbar-thumb{background:var(--p-100);border-radius:3px;}
.demo-card{flex:0 0 60%;scroll-snap-align:start;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh1);transition:transform var(--em),box-shadow var(--em),border-color var(--ec);}
.demo-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);border-color:var(--p-300);}
.demo-card__media{position:relative;overflow:hidden;}
.demo-card__media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform var(--em);}
.demo-card:hover .demo-card__media img{transform:scale(1.03);}
.demo-card__step{position:absolute;top:16px;left:16px;height:30px;padding:0 14px;border-radius:var(--r-pill);background:rgba(15,12,34,.78);color:#fff;font-size:13px;font-weight:700;display:inline-flex;align-items:center;backdrop-filter:blur(6px);}
.demo-card__body{padding:24px 26px 28px;}
.demo-card__body h3{font-size:19px;font-weight:700;}
.demo-card__body p{margin-top:10px;font-size:14.5px;color:var(--t2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
/* ==================== 证据区 ==================== */
.logo-row{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;margin-bottom:56px;}
.logo-row li{display:flex;align-items:center;justify-content:center;height:64px;border-radius:var(--r-sm);background:#fff;border:1px solid var(--line);color:var(--t3);font-size:13.5px;font-weight:600;letter-spacing:.02em;filter:grayscale(1);transition:filter var(--ec),border-color var(--ec),color var(--ec);}
.logo-row li:hover{filter:none;border-color:var(--p-300);color:var(--p-600);}
.proof-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:56px;}
.proof-stats li{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:34px 30px;box-shadow:var(--sh1);}
.proof-stats strong{display:block;font-size:40px;font-weight:800;line-height:1.1;letter-spacing:-.02em;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;font-variant-numeric:tabular-nums;}
.proof-stats span{display:block;margin-top:10px;font-size:14.5px;color:var(--t2);}
.quotes{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.quote{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:34px 34px 30px;box-shadow:var(--sh1);}
.quote::before{content:"“";position:absolute;top:6px;left:24px;font-size:64px;line-height:1;color:var(--p-100);font-family:Georgia,serif;}
.quote p{position:relative;font-size:15.5px;color:var(--t2);line-height:1.85;}
.quote footer{margin-top:20px;padding-top:16px;border-top:1px solid var(--line);font-size:14px;color:var(--t3);}
.quote footer strong{color:var(--t1);font-weight:700;}
/* ==================== 资讯 / CMS 列表 ==================== */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh1);transition:transform var(--em),box-shadow var(--em),border-color var(--ec);}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);border-color:var(--p-300);}
.news-card__media{overflow:hidden;}
.news-card__media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform var(--em);}
.news-card:hover .news-card__media img{transform:scale(1.03);}
.news-card__body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1;}
.news-card__body h3{margin-top:14px;font-size:17.5px;font-weight:700;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card__body p{margin-top:10px;font-size:14.5px;color:var(--t2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-card__foot{margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--t3);font-variant-numeric:tabular-nums;}
.news-card__foot .btn--text{font-size:14px;}
.news-empty{grid-column:1/-1;min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;background:#fff;border:1px dashed var(--line);border-radius:var(--r-lg);color:var(--t3);}
.news-empty i{font-size:30px;color:var(--p-300);}
/* ==================== 价格区 ==================== */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;}
.price-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:36px 30px 34px;box-shadow:var(--sh1);display:flex;flex-direction:column;transition:transform var(--em),box-shadow var(--em);}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);}
.price-card--hot{border:2px solid transparent;background:linear-gradient(#fff,#fff) padding-box,var(--grad) border-box;box-shadow:0 18px 44px rgba(91,61,232,.18);}
.price-card__flag{position:absolute;top:-14px;left:50%;transform:translateX(-50%);height:28px;padding:0 16px;border-radius:var(--r-pill);background:var(--grad);color:#fff;font-size:12.5px;font-weight:700;display:inline-flex;align-items:center;letter-spacing:.04em;}
.price-card h3{font-size:18px;font-weight:700;}
.price-card__desc{margin-top:8px;font-size:14px;color:var(--t3);min-height:44px;}
.price-card__amount{margin-top:22px;display:flex;align-items:baseline;gap:6px;}
.price-card__amount strong{font-size:40px;font-weight:800;line-height:1;letter-spacing:-.02em;font-variant-numeric:tabular-nums;}
.price-card__amount span{font-size:14px;color:var(--t3);}
.price-card ul{margin-top:24px;display:grid;gap:12px;flex:1;}
.price-card li{display:flex;gap:10px;font-size:14.5px;color:var(--t2);}
.price-card li i{color:var(--ok);margin-top:6px;font-size:13px;}
.price-card .btn{margin-top:28px;}
.price-note{margin-top:28px;text-align:center;font-size:13.5px;color:var(--t3);}
.price-note a{color:var(--p-600);font-weight:600;border-bottom:1px solid var(--p-100);}
.price-note a:hover{color:var(--a-500);border-color:var(--a-500);}
/* ==================== FAQ ==================== */
.faq-wrap{max-width:800px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh1);overflow:hidden;}
.faq-item{border-bottom:1px solid var(--line);position:relative;}
.faq-item:last-child{border-bottom:none;}
.faq-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--grad);transform:scaleY(0);transform-origin:top;transition:transform var(--em);}
.faq-item.is-open::before{transform:scaleY(1);}
.faq-item__q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;text-align:left;padding:22px 28px;font-size:17px;font-weight:700;color:var(--t1);transition:color var(--ec);}
.faq-item__q:hover{color:var(--p-600);}
.faq-item__q i{flex-shrink:0;width:28px;height:28px;border-radius:50%;background:var(--p-50);color:var(--p-600);display:inline-flex;align-items:center;justify-content:center;font-size:12px;transition:transform var(--em),background var(--ec),color var(--ec);}
.faq-item.is-open .faq-item__q i{transform:rotate(180deg);background:var(--p-600);color:#fff;}
.faq-item__a{max-height:0;overflow:hidden;transition:max-height var(--em);}
.faq-item__a p{padding:0 28px 24px;font-size:15px;line-height:1.85;color:var(--t2);}
.faq-item.is-open .faq-item__a{max-height:420px;}
/* ==================== 尾段 CTA ==================== */
.cta-band{background:linear-gradient(135deg,#2A1B6E 0%,#0F0C22 55%,#0C2A2E 100%);color:var(--td1);padding:88px 0;position:relative;overflow:hidden;}
.cta-band::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.3) 1px,transparent 1px);background-size:150px 150px;opacity:.35;pointer-events:none;}
.cta-band__inner{position:relative;z-index:2;max-width:760px;margin:0 auto;text-align:center;}
.cta-band h2{font-size:32px;font-weight:800;line-height:1.35;letter-spacing:-.02em;color:#fff;}
.cta-band p{margin-top:16px;font-size:16px;color:var(--td2);}
.cta-band__actions{margin-top:32px;display:flex;justify-content:center;gap:14px;flex-wrap:wrap;}
/* ==================== 页脚 ==================== */
.site-footer{background:var(--dark);color:var(--td2);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;}
.footer-brand .brand__text{color:#fff;}
.footer-brand p{margin-top:18px;font-size:14.5px;line-height:1.85;color:var(--td2);max-width:30em;}
.footer-col h4{font-size:14px;font-weight:700;color:#C8C2EE;letter-spacing:.04em;margin-bottom:18px;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:14px;color:var(--td2);display:inline-flex;align-items:center;gap:8px;transition:color var(--ec),transform var(--em);}
.footer-col a:hover{color:var(--a-500);transform:translateX(2px);}
.footer-contact li{font-size:14px;display:flex;align-items:center;gap:10px;color:var(--td2);}
.footer-contact i{color:var(--p-300);width:16px;text-align:center;}
.footer-bottom{margin-top:56px;border-top:1px solid var(--line-d);padding:22px 0 30px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#7C789B;}
.footer-bottom a{color:#7C789B;}
.footer-bottom a:hover{color:var(--a-500);}
/* ==================== 浮动 CTA ==================== */
.float-cta{position:fixed;right:32px;bottom:32px;z-index:70;opacity:0;visibility:hidden;transform:translateY(14px);transition:opacity var(--em),transform var(--em),visibility var(--em);}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta a{display:inline-flex;align-items:center;gap:10px;height:52px;padding:0 26px;border-radius:var(--r-pill);background:var(--grad);color:#fff;font-size:15px;font-weight:600;box-shadow:var(--sh3);transition:filter var(--ec),transform var(--em);}
.float-cta a:hover{filter:brightness(1.06);transform:translateY(-1px);}
/* ==================== 移动端抽屉 ==================== */
@media (max-width:1023px){
  :root{--sec:72px;}
  .container{padding:0 24px;}
  .container,.container{max-width:100%;}
  .topbar__tip{display:none;}
  .nav-toggle{display:inline-flex;}
  .main-nav{position:fixed;top:0;right:0;bottom:0;width:280px;max-width:84vw;background:#fff;box-shadow:-16px 0 44px rgba(15,12,34,.18);padding:96px 24px 32px;transform:translateX(102%);transition:transform var(--em);z-index:65;overflow-y:auto;}
  .main-nav.is-open{transform:translateX(0);}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:4px;}
  .main-nav a{height:48px;padding:0 14px;font-size:16px;border-radius:var(--r-xs);}
  .main-nav a::after{display:none;}
  .main-nav a.is-active{background:var(--p-50);}
  .nav-mask{position:fixed;inset:0;background:rgba(15,12,34,.42);opacity:0;visibility:hidden;transition:opacity var(--em),visibility var(--em);z-index:64;}
  .nav-mask.is-open{opacity:1;visibility:visible;}
  .hero__inner{grid-template-columns:1fr;gap:44px;}
  .hero__title{font-size:38px;}
  .features__grid{grid-template-columns:1fr;}
  .iconstrip{grid-template-columns:repeat(2,1fr);}
  .demo-card{flex:0 0 78%;}
  .logo-row{grid-template-columns:repeat(3,1fr);}
  .proof-stats{grid-template-columns:1fr;}
  .quotes{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .price-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
}
@media (max-width:639px){
  :root{--sec:56px;}
  .container{padding:0 18px;}
  body{font-size:16px;}
  .topbar__right .topbar__link{display:none;}
  .hero{padding:56px 0 64px;}
  .hero__title{font-size:32px;}
  .hero__sub{font-size:16px;}
  .hero__actions .btn{flex:1 1 100%;}
  .hero__stats{flex-wrap:nowrap;overflow-x:auto;padding-bottom:6px;margin-right:-18px;padding-right:18px;}
  .hero__stats li{min-width:126px;}
  .section-head h2{font-size:24px;}
  .section-head p{font-size:15px;}
  .iconstrip{grid-template-columns:1fr;}
  .demo-card{flex:0 0 88%;}
  .logo-row{grid-template-columns:repeat(2,1fr);}
  .news-grid{grid-template-columns:1fr;}
  .quote{padding:26px 22px;}
  .faq-item__q{padding:18px 20px;font-size:15.5px;}
  .faq-item__a p{padding:0 20px 20px;}
  .cta-band{padding:64px 0;}
  .cta-band h2{font-size:24px;}
  .cta-band__actions .btn{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .float-cta{right:0;left:0;bottom:0;transform:translateY(100%);}
  .float-cta.is-visible{transform:translateY(0);}
  .float-cta a{width:100%;height:56px;border-radius:0;justify-content:center;padding-bottom:env(safe-area-inset-bottom);}
}
@media (min-width:1200px){
  .container{max-width:1320px;}
}
@media (hover:none){
  .fcard:hover,.iconstrip li:hover,.news-card:hover,.demo-card:hover,.price-card:hover{transform:none;}
}

/* roulang page: article */
:root{
  --c-primary:#5B3DE8;
  --c-primary-deep:#2A1B6E;
  --c-aurora:#17B8B0;
  --c-meteor:#FF7A3D;
  --c-bg:#F7F6FC;
  --c-bg-alt:#EFEEF9;
  --c-dark:#0F0C22;
  --c-ink:#1A1830;
  --c-ink-2:#5A5773;
  --c-ink-3:#8A879E;
  --c-on-dark:#EDEBFA;
  --c-on-dark-2:#A9A5C6;
  --c-ok:#2FA36B;
  --c-warn:#E8A33D;
  --c-err:#E0564B;
  --c-border:#E5E3F2;
  --p-50:rgba(91,61,232,.08);
  --p-100:rgba(91,61,232,.14);
  --p-200:rgba(91,61,232,.26);
  --p-500:#5B3DE8;
  --p-900:#2A1B6E;
  --a-50:rgba(23,184,176,.10);
  --grad:linear-gradient(135deg,#5B3DE8 0%,#17B8B0 100%);
  --grad-soft:linear-gradient(135deg,rgba(91,61,232,.10) 0%,rgba(23,184,176,.10) 100%);
  --r-xl:28px;
  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-1:0 6px 20px rgba(26,24,48,.06);
  --sh-2:0 16px 40px rgba(91,61,232,.16);
  --sh-3:0 10px 30px rgba(15,12,34,.28);
  --t-color:180ms ease-out;
  --t-move:240ms cubic-bezier(.2,.8,.2,1);
  --sp-section:96px;
}
*,*::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-ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.8;
  letter-spacing:0;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t-color),background-color var(--t-color),border-color var(--t-color)}
a:hover{color:var(--c-aurora)}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-.02em;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none}
input,textarea{font-family:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin-inline:auto;padding-inline:32px}
.tnum{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ============ 顶部信息条 ============ */
.topbar{
  background:var(--c-dark);
  color:var(--c-on-dark-2);
  font-size:13px;
  line-height:38px;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar__left{display:flex;align-items:center;gap:10px;min-width:0}
.topbar__dot{width:7px;height:7px;border-radius:50%;background:var(--c-aurora);box-shadow:0 0 0 4px rgba(23,184,176,.16);flex:none}
.topbar__domain{color:var(--c-on-dark);font-weight:600;letter-spacing:.01em}
.topbar__hint{color:var(--c-on-dark-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar__right{display:flex;align-items:center;gap:20px;flex:none}
.topbar__link{color:var(--c-on-dark-2)}
.topbar__link:hover{color:var(--c-aurora)}
.topbar__cta{color:#fff;background:rgba(255,255,255,.10);padding:0 14px;border-radius:var(--r-pill);line-height:26px;display:inline-block}
.topbar__cta:hover{background:var(--c-meteor);color:#fff}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,246,252,.96);
  border-bottom:1px solid var(--c-border);
  transition:background-color var(--t-color),box-shadow var(--t-color),backdrop-filter var(--t-color);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  box-shadow:0 6px 24px rgba(26,24,48,.07);
}
.site-header__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:70px;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink)}
.brand:hover{color:var(--c-ink)}
.brand__mark{display:inline-flex;align-items:flex-end;gap:3px;height:24px}
.brand__mark i{display:block;width:5px;border-radius:3px;background:var(--grad)}
.brand__mark i:nth-child(1){height:12px}
.brand__mark i:nth-child(2){height:20px}
.brand__mark i:nth-child(3){height:16px}
.brand__text{font-size:19px;font-weight:800;letter-spacing:-.02em}
.main-nav ul{display:flex;align-items:center;gap:28px}
.main-nav a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  color:var(--c-ink-2);
  font-size:15px;
  font-weight:500;
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--grad);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--t-move);
}
.main-nav a:hover,.main-nav a.is-active{color:var(--c-ink)}
.main-nav a:hover::after,.main-nav a.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:var(--r-sm);
  border:1px solid var(--c-border);
  background:#fff;
  padding:12px 10px;
}
.nav-toggle span{display:block;height:2px;background:var(--c-ink);border-radius:2px;margin:4px 0;transition:transform var(--t-move),opacity var(--t-color)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.nav-overlay{
  position:fixed;inset:0;background:rgba(15,12,34,.42);
  opacity:0;visibility:hidden;transition:opacity var(--t-color),visibility var(--t-color);z-index:55;
}
.nav-overlay.is-open{opacity:1;visibility:visible}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;
  border-radius:var(--r-pill);
  font-size:15px;font-weight:600;
  letter-spacing:0;
  transition:transform var(--t-move),box-shadow var(--t-move),background-color var(--t-color),color var(--t-color),border-color var(--t-color),filter var(--t-color);
}
.btn--sm{min-height:38px;padding:0 18px;font-size:14px}
.btn--primary{background:var(--grad);color:#fff;box-shadow:0 8px 22px rgba(91,61,232,.26)}
.btn--primary:hover{color:#fff;filter:brightness(1.06);transform:translateY(-1px) scale(1.02);box-shadow:var(--sh-2)}
.btn--ghost{background:transparent;color:var(--c-primary);border:1px solid var(--p-200)}
.btn--ghost:hover{background:var(--p-50);color:var(--c-primary);transform:translateY(-1px)}
.btn--ghost-light{background:transparent;color:var(--c-on-dark);border:1px solid rgba(255,255,255,.32)}
.btn--ghost-light:hover{background:rgba(255,255,255,.10);color:#fff}
.btn--block{width:100%}
.btn-arrow{gap:6px}
.btn-arrow i{transition:transform var(--t-move)}
.btn-arrow:hover i{transform:translateX(4px)}

/* ============ 通用板块头 ============ */
.section{padding-block:var(--sp-section)}
.section--alt{background:var(--c-bg-alt)}
.section-head{margin-bottom:40px}
.section-head h2{font-size:32px;font-weight:700}
.section-head p{margin-top:10px;color:var(--c-ink-2);font-size:15.5px}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;border-radius:var(--r-pill);
  background:var(--p-50);color:var(--c-primary);
  border:1px solid var(--p-100);
  font-size:13px;font-weight:600;line-height:1.6;
}
.pill--aurora{background:var(--a-50);color:#0E8F89;border-color:rgba(23,184,176,.24)}
.pill--meteor{background:rgba(255,122,61,.10);color:#D9541A;border-color:rgba(255,122,61,.24)}

/* ============ 面包屑 ============ */
.crumb-wrap{padding-top:28px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-3)}
.breadcrumb a{color:var(--c-ink-2)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:var(--c-ink-3)}
.breadcrumb .now{color:var(--c-ink);max-width:420px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}

/* ============ 文章头部 ============ */
.article-head{padding-top:24px}
.article-head__top{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:18px}
.article-head h1{
  font-size:40px;
  line-height:1.35;
  font-weight:800;
  max-width:900px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  margin-top:20px;
  color:var(--c-ink-3);
  font-size:13px;
}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
.article-meta b{color:var(--c-ink-2);font-weight:600}
.article-cover{margin-top:32px;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--c-border);box-shadow:var(--sh-1);background:var(--c-bg-alt)}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-cover figcaption{margin:0;padding:12px 18px;font-size:13px;color:var(--c-ink-3);background:#fff;text-align:center}

/* ============ 正文布局 ============ */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:48px;
  padding-block:56px var(--sp-section);
  align-items:start;
}
.article-body{max-width:800px;width:100%}
.prose{font-size:17px;line-height:1.9;color:#26243D}
.prose > * + *{margin-top:1.15em}
.prose h2{
  position:relative;
  margin-top:48px;
  padding-left:16px;
  font-size:26px;
  font-weight:700;
  line-height:1.45;
  color:var(--c-ink);
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.22em;width:4px;height:1em;border-radius:2px;background:var(--grad);
}
.prose h3{margin-top:32px;font-size:20px;font-weight:700;color:var(--c-ink)}
.prose h4{margin-top:24px;font-size:18px;font-weight:700;color:var(--c-ink)}
.prose p{margin-top:1.15em}
.prose a{color:var(--c-primary);border-bottom:1px solid var(--p-200)}
.prose a:hover{color:var(--c-aurora);border-bottom-color:var(--c-aurora)}
.prose strong{font-weight:700;color:var(--c-ink)}
.prose ul,.prose ol{margin-top:1.1em;padding-left:4px}
.prose ul li{position:relative;padding-left:22px;margin-top:10px}
.prose ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--c-primary);
}
.prose ol{counter-reset:li;padding-left:0}
.prose ol li{position:relative;counter-increment:li;padding-left:34px;margin-top:12px}
.prose ol li::before{
  content:counter(li);
  position:absolute;left:0;top:.25em;
  width:22px;height:22px;border-radius:50%;
  background:var(--p-50);color:var(--c-primary);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.prose blockquote{
  margin-top:1.4em;
  padding:18px 22px;
  background:var(--p-50);
  border-left:4px solid var(--c-primary);
  border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--c-ink-2);
  font-size:16px;
}
.prose blockquote p{margin:0}
.prose figure{margin:1.6em 0}
.prose img{width:100%;height:auto;border-radius:16px}
.prose figcaption{text-align:center;font-size:13px;color:var(--c-ink-3);margin-top:10px}
.prose table{
  display:block;
  width:100%;
  overflow-x:auto;
  border-collapse:collapse;
  margin-top:1.4em;
  font-size:15px;
  background:#fff;
  border-radius:var(--r-md);
}
.prose th,.prose td{border:1px solid var(--c-border);padding:12px 16px;text-align:left;white-space:nowrap}
.prose th{background:var(--grad-soft);font-weight:700;color:var(--c-primary-deep)}
.prose pre{
  margin-top:1.4em;padding:18px 20px;overflow-x:auto;
  background:var(--c-dark);color:var(--c-on-dark);
  border-radius:var(--r-md);font-size:14px;line-height:1.75;
}
.prose code{background:var(--p-50);color:var(--c-primary-deep);padding:2px 6px;border-radius:6px;font-size:.92em}
.prose pre code{background:none;color:inherit;padding:0}
.prose hr{margin:2.4em 0;border:0;border-top:1px solid var(--c-border)}

/* 空态 */
.empty-state{
  min-height:260px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
  background:#fff;border:1px dashed var(--c-border);border-radius:var(--r-lg);
  padding:48px 24px;text-align:center;
}
.empty-state svg{width:48px;height:48px;color:var(--c-ink-3)}
.empty-state p{color:var(--c-ink-2);font-size:16px}

/* ============ 标签 / 分享 ============ */
.post-foot{margin-top:56px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.tag-row .tag-label{font-size:13px;color:var(--c-ink-3);margin-right:4px}
.tag{
  display:inline-flex;align-items:center;
  padding:6px 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--c-border);
  font-size:13px;color:var(--c-ink-2);
  transition:border-color var(--t-color),color var(--t-color),transform var(--t-move);
}
.tag:hover{border-color:var(--p-200);color:var(--c-primary);transform:translateY(-2px)}
.share-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}

/* ============ 继续阅读双卡 ============ */
.post-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:36px}
.post-nav__card{
  display:block;padding:20px 22px;
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  transition:transform var(--t-move),box-shadow var(--t-move),border-color var(--t-color);
}
.post-nav__card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--p-200)}
.post-nav__dir{display:block;font-size:13px;color:var(--c-ink-3);margin-bottom:8px}
.post-nav__title{font-size:16px;font-weight:700;color:var(--c-ink);display:block;line-height:1.6}
.post-nav__card--next{text-align:right}

/* ============ 侧栏 ============ */
.article-side{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px}
.side-card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-md);
  padding:22px;box-shadow:var(--sh-1);
}
.side-card h3{font-size:15px;font-weight:700;color:var(--c-ink);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:4px;height:15px;border-radius:2px;background:var(--grad)}
.side-toc a{
  display:block;padding:8px 0;font-size:14px;color:var(--c-ink-2);
  border-bottom:1px dashed var(--c-border);
  transition:color var(--t-color),padding-left var(--t-color);
}
.side-toc li:last-child a{border-bottom:0}
.side-toc a:hover{color:var(--c-primary);padding-left:6px}
.side-list li + li{margin-top:14px}
.side-list a{display:flex;gap:12px;align-items:flex-start}
.side-list img{width:64px;height:48px;object-fit:cover;border-radius:10px;flex:none;background:var(--c-bg-alt)}
.side-list b{display:block;font-size:14px;font-weight:700;color:var(--c-ink);line-height:1.55}
.side-list a:hover b{color:var(--c-primary)}
.side-list span{display:block;font-size:12.5px;color:var(--c-ink-3);margin-top:4px}
.side-cta{
  background:var(--c-dark);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-md);
  padding:24px 22px;
  color:var(--c-on-dark-2);
  box-shadow:var(--sh-1);
}
.side-cta h3{color:#fff;font-size:17px;margin:0 0 8px}
.side-cta p{font-size:13.5px;line-height:1.75;margin-bottom:16px}
.side-cta .btn{min-height:42px;font-size:14px}

/* ============ 相关内容 ============ */
.related{padding-bottom:var(--sp-section)}
.related-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:32px;flex-wrap:wrap}
.related-head h2{font-size:28px}
.related-head p{color:var(--c-ink-2);font-size:15px;margin-top:8px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.post-card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform var(--t-move),box-shadow var(--t-move),border-color var(--t-color);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--p-200)}
.post-card__media{overflow:hidden;background:var(--c-bg-alt)}
.post-card__media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform var(--t-move)}
.post-card:hover .post-card__media img{transform:scale(1.03)}
.post-card__body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.post-card__body h3{font-size:17.5px;font-weight:700;line-height:1.55;color:var(--c-ink)}
.post-card__body p{font-size:14.5px;color:var(--c-ink-2);line-height:1.75}
.post-card__foot{margin-top:auto;font-size:13px;color:var(--c-ink-3);display:flex;align-items:center;gap:10px}

/* ============ CTA 带 ============ */
.cta-band{
  background:var(--c-dark);
  background-image:radial-gradient(circle at 16% 20%,rgba(91,61,232,.45),transparent 52%),radial-gradient(circle at 84% 76%,rgba(23,184,176,.32),transparent 55%);
  color:var(--c-on-dark);
  padding-block:88px;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:100% 84px;
  pointer-events:none;
}
.cta-band__inner{position:relative;z-index:1;max-width:720px}
.cta-band h2{font-size:34px;line-height:1.4;color:#fff}
.cta-band p{margin-top:14px;color:var(--c-on-dark-2);font-size:16px;line-height:1.85}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-dark);color:var(--c-on-dark-2);padding-top:72px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:52px}
.footer-brand .brand{color:#fff;margin-bottom:16px}
.footer-brand .brand__text{color:#fff}
.footer-brand p{font-size:14px;line-height:1.9;color:var(--c-on-dark-2);max-width:320px}
.site-footer h4{font-size:14px;font-weight:700;color:#CFCBF0;margin-bottom:18px;letter-spacing:.01em}
.footer-links li + li{margin-top:12px}
.footer-links a{color:var(--c-on-dark-2);font-size:14px;display:inline-block}
.footer-links a:hover{color:var(--c-aurora);transform:translateX(2px)}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--c-on-dark-2);margin-bottom:14px;line-height:1.75}
.footer-contact b{color:#CFCBF0;font-weight:600;flex:none}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding:22px 0 30px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:var(--c-on-dark-2);
}
.footer-credit strong{color:#CFCBF0;font-weight:700}
.footer-bottom a{color:var(--c-on-dark-2)}
.footer-bottom a:hover{color:var(--c-aurora)}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:70;
  display:inline-flex;align-items:center;gap:8px;
  padding:0 24px;min-height:52px;
  border-radius:var(--r-pill);
  background:var(--grad);color:#fff;font-weight:600;font-size:15px;
  box-shadow:var(--sh-3);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity var(--t-move),transform var(--t-move),visibility var(--t-move),filter var(--t-color);
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta:hover{color:#fff;filter:brightness(1.06)}
.dock-cta{display:none}

/* ============ 响应式 ============ */
@media (min-width:1200px){
  .container{max-width:1320px}
  .article-layout{grid-template-columns:minmax(0,1fr) 300px}
}
@media (max-width:1199px){
  .article-side{position:static}
  .side-card,.side-cta{max-width:100%}
}
@media (max-width:1023px){
  :root{--sp-section:72px}
  .container{padding-inline:24px}
  .article-head h1{font-size:32px}
  .article-layout{gap:40px;padding-block:40px 72px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .nav-toggle{display:block}
  .main-nav{
    position:fixed;
    top:0;right:0;
    width:min(320px,86vw);
    height:100vh;
    background:#fff;
    border-left:1px solid var(--c-border);
    box-shadow:var(--sh-3);
    padding:88px 26px 32px;
    transform:translateX(102%);
    transition:transform var(--t-move);
    z-index:58;
    overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0)}
  .main-nav ul{flex-direction:column;align-items:flex-start;gap:4px}
  .main-nav li{width:100%}
  .main-nav a{display:block;width:100%;padding:14px 4px;font-size:16px;border-bottom:1px solid var(--c-border)}
  .main-nav a::after{display:none}
  .main-nav a.is-active{color:var(--c-primary)}
  .main-nav a.is-active::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--c-meteor);margin-right:10px;vertical-align:middle}
}
@media (max-width:767px){
  body{font-size:16px}
  .topbar__hint,.topbar__link{display:none}
  .topbar{font-size:12.5px}
  .section-head h2{font-size:24px}
  .prose{font-size:16.5px}
  .prose h2{font-size:21px;margin-top:40px}
  .prose h3{font-size:18.5px}
  .post-nav{grid-template-columns:1fr}
  .post-nav__card--next{text-align:left}
  .cta-band{padding-block:64px}
  .cta-band h2{font-size:25px}
  .related-head h2{font-size:23px}
}
@media (max-width:639px){
  :root{--sp-section:56px}
  .container{padding-inline:18px}
  .site-header__inner{min-height:64px;gap:12px}
  .brand__text{font-size:17px}
  .header-actions .btn--primary{display:none}
  .article-head h1{font-size:28px}
  .article-cover{border-radius:18px;margin-top:24px}
  .card-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .float-cta{display:none}
  .dock-cta{
    display:flex;align-items:center;justify-content:center;gap:8px;
    position:fixed;left:0;right:0;bottom:0;z-index:70;
    height:calc(56px + env(safe-area-inset-bottom,0px));
    padding-bottom:env(safe-area-inset-bottom,0px);
    background:var(--grad);color:#fff;font-weight:600;font-size:15px;
    box-shadow:0 -6px 24px rgba(15,12,34,.28);
  }
  .dock-cta:hover{color:#fff}
  .site-footer{padding-bottom:64px}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
:root{
  --brand:#5B3DE8;
  --brand-deep:#2A1B6E;
  --brand-08:rgba(91,61,232,.08);
  --brand-16:rgba(91,61,232,.16);
  --brand-24:rgba(91,61,232,.24);
  --brand-40:rgba(91,61,232,.40);
  --accent:#17B8B0;
  --accent-08:rgba(23,184,176,.08);
  --accent-16:rgba(23,184,176,.16);
  --action:#FF7A3D;
  --action-08:rgba(255,122,61,.08);
  --bg:#F7F6FC;
  --bg-alt:#EFEEF9;
  --dark:#0F0C22;
  --line:#E5E3F2;
  --text:#1A1830;
  --text-2:#5A5773;
  --text-3:#8A879E;
  --on-dark:#EDEBFA;
  --on-dark-2:#A9A5C6;
  --ok:#2FA36B;
  --warn:#E8A33D;
  --err:#E0564B;
  --grad:linear-gradient(135deg,#5B3DE8 0%,#17B8B0 100%);
  --r-xl:28px;
  --r-lg:24px;
  --r-md:18px;
  --r-img:16px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-1:0 6px 20px rgba(26,24,48,.06);
  --sh-2:0 16px 40px rgba(91,61,232,.16);
  --sh-3:0 10px 30px rgba(15,12,34,.28);
  --ease-color:180ms ease-out;
  --ease-move:240ms cubic-bezier(.2,.8,.2,1);
  --container:1200px;
  --sec-y:104px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--ease-color);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;letter-spacing:-.02em;line-height:1.3;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
input,select,textarea{font:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
@media (min-width:1200px){.container{max-width:1320px;}}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--dark);color:var(--on-dark-2);font-size:13px;}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px;}
.topbar__left{display:flex;align-items:center;gap:10px;min-width:0;}
.topbar__dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(23,184,176,.16);flex:none;}
.topbar__left span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar__right{display:flex;align-items:center;gap:20px;flex:none;}
.topbar__right a{color:var(--on-dark);font-weight:600;}
.topbar__right a:hover{color:var(--accent);}
.topbar__sep{width:1px;height:14px;background:rgba(255,255,255,.16);}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,246,252,.92);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color var(--ease-color),box-shadow var(--ease-color);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 2px 16px rgba(26,24,48,.07);}
.site-header__inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:68px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:var(--text);letter-spacing:-.01em;}
.brand__mark{position:relative;width:30px;height:30px;border-radius:10px;background:var(--grad);box-shadow:0 5px 14px rgba(91,61,232,.3);flex:none;}
.brand__mark i{position:absolute;background:#fff;border-radius:50%;}
.brand__mark i:nth-child(1){width:5px;height:5px;left:7px;top:8px;}
.brand__mark i:nth-child(2){width:3px;height:3px;right:8px;top:11px;opacity:.85;}
.brand__mark i:nth-child(3){width:4px;height:4px;left:13px;bottom:7px;opacity:.7;}
.main-nav ul{display:flex;align-items:center;gap:26px;}
.main-nav a{position:relative;display:inline-block;padding:6px 0;font-size:15px;font-weight:500;color:var(--text-2);}
.main-nav a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform var(--ease-move);}
.main-nav a:hover{color:var(--text);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--brand);font-weight:600;}
.main-nav a.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;flex:none;}
.nav-toggle{display:none;flex-direction:column;align-items:center;justify-content:center;gap:5px;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:#fff;}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--text);transition:transform var(--ease-move),opacity var(--ease-color);}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.nav-mask{position:fixed;inset:0;background:rgba(15,12,34,.5);opacity:0;visibility:hidden;transition:opacity var(--ease-move),visibility var(--ease-move);z-index:70;}
.nav-mask.is-open{opacity:1;visibility:visible;}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-pill);font-weight:600;line-height:1;white-space:nowrap;transition:transform var(--ease-move),filter var(--ease-color),background-color var(--ease-color),border-color var(--ease-color),color var(--ease-color),box-shadow var(--ease-move);}
.btn--primary{background:var(--grad);color:#fff;box-shadow:0 8px 22px rgba(91,61,232,.28);}
.btn--primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 12px 28px rgba(91,61,232,.34);}
.btn--ghost{border:1px solid var(--brand-40);color:var(--brand);background:transparent;}
.btn--ghost:hover{background:var(--brand-08);transform:translateY(-1px);}
.btn--ghost-light{border:1px solid rgba(255,255,255,.34);color:var(--on-dark);background:rgba(255,255,255,.05);}
.btn--ghost-light:hover{background:rgba(255,255,255,.14);transform:translateY(-1px);color:#fff;}
.btn--text{color:var(--brand);font-weight:600;gap:6px;padding:0;}
.btn--text i{transition:transform var(--ease-move);}
.btn--text:hover i{transform:translateX(4px);}
.btn--lg{padding:15px 30px;font-size:16px;}
.btn--md{padding:12px 24px;font-size:15px;}
.btn--sm{padding:9px 18px;font-size:14px;}

/* ---------- Hero ---------- */
.hero{position:relative;background:var(--dark);color:var(--on-dark);overflow:hidden;padding:72px 0 84px;}
.hero__bg{position:absolute;inset:0;background-image:linear-gradient(135deg,rgba(15,12,34,.94) 0%,rgba(42,27,110,.82) 100%),url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;}
.hero__ticks{position:absolute;inset:0;background-image:repeating-linear-gradient(90deg,rgba(255,255,255,.055) 0 1px,transparent 1px 140px),repeating-linear-gradient(0deg,rgba(255,255,255,.04) 0 1px,transparent 1px 140px);}
.hero__stars{position:absolute;inset:0;background-image:radial-gradient(2px 2px at 18% 26%,rgba(255,255,255,.75),transparent 60%),radial-gradient(1.6px 1.6px at 62% 12%,rgba(255,255,255,.55),transparent 60%),radial-gradient(1.8px 1.8px at 82% 58%,rgba(255,255,255,.6),transparent 60%),radial-gradient(1.4px 1.4px at 34% 76%,rgba(255,255,255,.45),transparent 60%),radial-gradient(1.6px 1.6px at 72% 82%,rgba(255,255,255,.5),transparent 60%);animation:breathe 5s ease-in-out infinite;}
@keyframes breathe{0%,100%{opacity:.55;}50%{opacity:.95;}}
.hero__inner{position:relative;z-index:2;}
.hero__badge{display:inline-flex;align-items:center;gap:8px;padding:7px 15px;border-radius:var(--r-pill);background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.18);font-size:13px;font-weight:600;color:var(--on-dark);}
.hero__badge i{color:var(--accent);}
.hero__title{margin:22px 0 18px;font-size:48px;font-weight:800;line-height:1.2;color:#fff;letter-spacing:-.02em;}
.hero__title em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero__lead{max-width:480px;font-size:17.5px;color:var(--on-dark-2);margin-bottom:30px;}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;}
.hero__stats{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px;}
.stat{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:var(--r-md);padding:12px 18px;min-width:132px;}
.stat b{display:block;font-size:24px;font-weight:800;line-height:1.25;font-variant-numeric:tabular-nums;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.stat span{display:block;font-size:13px;color:var(--on-dark-2);margin-top:2px;}

.hero__media{position:relative;padding:0 0 40px 40px;}
.hero__media-main{border-radius:var(--r-xl);overflow:hidden;border:1px solid rgba(255,255,255,.16);box-shadow:var(--sh-3);aspect-ratio:16/11;background:#1a1636;}
.hero__media-main img{width:100%;height:100%;object-fit:cover;}
.hero__media-cover{position:absolute;left:0;bottom:0;width:50%;border-radius:18px;overflow:hidden;border:3px solid rgba(15,12,34,.92);box-shadow:var(--sh-3);aspect-ratio:4/3;background:#1a1636;}
.hero__media-cover img{width:100%;height:100%;object-fit:cover;}

/* ---------- 面包屑 ---------- */
.crumb-wrap{background:var(--bg);border-bottom:1px solid var(--line);}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:16px 0;font-size:13px;color:var(--text-3);}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:#C4C1D8;}
.breadcrumb .current{color:var(--text-2);font-weight:600;}

/* ---------- 板块 ---------- */
.section{padding:var(--sec-y) 0;}
.section--alt{background:var(--bg-alt);}
.section__head{max-width:740px;margin-bottom:52px;}
.section__title{position:relative;padding-left:18px;font-size:32px;}
.section__title::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:2px;background:var(--grad);}
.section__desc{margin-top:14px;color:var(--text-2);font-size:16px;}
.section__head--center{margin-left:auto;margin-right:auto;text-align:center;}
.section__head--center .section__title{padding-left:0;}
.section__head--center .section__title::before{display:none;}

/* ---------- 交错图文 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;}
.split + .split{margin-top:88px;}
.split__media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh-1);border:1px solid var(--line);}
.split--reverse .split__media{order:2;}
.split--reverse .split__body{order:1;}
.split__body h2{font-size:30px;margin-bottom:16px;}
.split__body p{color:var(--text-2);font-size:16px;}
.check-list{margin-top:24px;}
.check-list li{display:flex;gap:11px;margin-bottom:13px;color:var(--text-2);font-size:15.5px;}
.check-list li i{color:var(--brand);margin-top:6px;font-size:13px;flex:none;}
.check-list li strong{color:var(--text);font-weight:600;}

/* ---------- 卡片网格 ---------- */
.grid-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:30px;box-shadow:var(--sh-1);transition:transform var(--ease-move),box-shadow var(--ease-move),border-color var(--ease-color);}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand-40);}
.card__icon{display:grid;place-items:center;width:46px;height:46px;border-radius:14px;background:var(--brand-08);color:var(--brand);font-size:19px;margin-bottom:18px;}
.card:nth-child(2n) .card__icon{background:var(--accent-08);color:var(--accent);}
.card h3{font-size:20px;margin-bottom:10px;}
.card p{margin:0;color:var(--text-2);font-size:15px;}

/* ---------- 指标条 ---------- */
.mini-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:56px;}
.metric{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:22px 24px;box-shadow:var(--sh-1);}
.metric b{display:block;font-size:30px;font-weight:800;line-height:1.2;font-variant-numeric:tabular-nums;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.metric span{display:block;font-size:13.5px;color:var(--text-3);margin-top:4px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:840px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden;}
.faq-item{position:relative;border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--grad);opacity:0;transition:opacity var(--ease-color);}
.faq-item.is-open::before{opacity:1;}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:18px;width:100%;padding:22px 28px;text-align:left;font-size:17px;font-weight:700;color:var(--text);transition:color var(--ease-color);}
.faq-q:hover{color:var(--brand);}
.faq-icon{position:relative;flex:none;width:22px;height:22px;transition:transform var(--ease-move);}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;transform:translate(-50%,-50%);}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;transition:transform var(--ease-move),opacity var(--ease-color);}
.faq-item.is-open .faq-icon{transform:rotate(180deg);}
.faq-item.is-open .faq-icon::after{opacity:0;transform:translate(-50%,-50%) scaleY(0);}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows 240ms cubic-bezier(.2,.8,.2,1);}
.faq-item.is-open .faq-a{grid-template-rows:1fr;}
.faq-a__inner{overflow:hidden;}
.faq-a__inner p{margin:0;padding:0 28px 24px;font-size:15px;line-height:1.8;color:var(--text-2);}

/* ---------- CTA 带 ---------- */
.cta-band{position:relative;overflow:hidden;background:var(--dark);color:var(--on-dark);padding:88px 0;}
.cta-band__bg{position:absolute;inset:0;background-image:linear-gradient(135deg,rgba(15,12,34,.92) 0%,rgba(91,61,232,.72) 100%),url('/assets/images/backpic/back-3.png');background-size:cover;background-position:center;}
.cta-band__inner{position:relative;z-index:2;max-width:700px;}
.cta-band h2{font-size:32px;color:#fff;margin-bottom:16px;}
.cta-band p{color:var(--on-dark-2);margin-bottom:30px;}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:var(--on-dark-2);padding:76px 0 0;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:44px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand .brand__text{color:#fff;}
.footer-brand p{color:var(--on-dark-2);font-size:14px;max-width:300px;margin-bottom:16px;}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;}
.footer-tags span{padding:4px 12px;border-radius:var(--r-pill);background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);font-size:12.5px;color:var(--on-dark);}
.footer-col h4{font-size:14px;font-weight:700;color:#C9C4EA;margin-bottom:16px;letter-spacing:0;}
.footer-col li{margin-bottom:2px;}
.footer-col a{display:inline-block;padding:5px 0;color:var(--on-dark-2);transition:color var(--ease-color),transform var(--ease-move);}
.footer-col a:hover{color:var(--accent);transform:translateX(2px);}
.footer-contact li{display:flex;gap:10px;padding:5px 0;color:var(--on-dark-2);}
.footer-contact i{color:var(--accent);margin-top:6px;font-size:13px;flex:none;}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;margin-top:56px;padding:22px 0;border-top:1px solid rgba(255,255,255,.1);font-size:13px;color:#8F8BB0;}
.footer-bottom strong{color:var(--on-dark);font-weight:600;}

/* ---------- 浮动 CTA ---------- */
.float-cta{position:fixed;right:28px;bottom:28px;z-index:65;display:inline-flex;align-items:center;gap:8px;padding:14px 26px;border-radius:var(--r-pill);background:var(--grad);color:#fff;font-weight:600;font-size:15px;box-shadow:var(--sh-3);opacity:0;visibility:hidden;transform:translateY(14px);transition:opacity var(--ease-move),transform var(--ease-move),visibility var(--ease-move),filter var(--ease-color);}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{filter:brightness(1.06);}
.float-cta.is-docked{bottom:112px;}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .hero__title{font-size:38px;}
  .section{padding:72px 0;}
  .split{gap:44px;}
  .split__body h2{font-size:26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:900px){
  .container{padding:0 24px;}
  .main-nav{
    position:fixed;top:0;right:0;z-index:80;
    width:290px;max-width:84vw;height:100vh;
    padding:92px 24px 32px;
    background:#fff;box-shadow:var(--sh-3);
    transform:translateX(100%);
    transition:transform var(--ease-move);
    overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0);}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:0;}
  .main-nav a{display:block;padding:14px 0;font-size:16px;border-bottom:1px solid var(--line);}
  .main-nav a::after{display:none;}
  .nav-toggle{display:flex;}
  .header-actions .btn--primary{display:none;}
  .split{grid-template-columns:1fr;gap:32px;}
  .split--reverse .split__media{order:0;}
  .split--reverse .split__body{order:0;}
  .split + .split{margin-top:56px;}
  .grid-cards{grid-template-columns:1fr;}
  .mini-metrics{grid-template-columns:repeat(2,1fr);margin-top:40px;}
  .hero__media{padding:0 0 34px 34px;margin-top:44px;}
  .hero{padding:56px 0 68px;}
}
@media (max-width:767px){
  .section__title{font-size:25px;}
  .split__body h2{font-size:22px;}
  .faq-q{padding:18px 20px;font-size:16px;}
  .faq-a__inner p{padding:0 20px 20px;}
  .cta-band h2{font-size:24px;}
  .cta-band{padding:64px 0;}
  .float-cta{left:0;right:0;bottom:0;justify-content:center;border-radius:0;height:56px;padding:0 0 env(safe-area-inset-bottom);font-size:15px;}
  .float-cta.is-docked{bottom:0;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
}
@media (max-width:560px){
  .container{padding:0 18px;}
  body{font-size:16px;}
  .hero__title{font-size:30px;}
  .hero__lead{font-size:16px;}
  .hero__cta{flex-direction:column;align-items:stretch;}
  .hero__cta .btn{width:100%;}
  .hero__stats{gap:10px;}
  .stat{flex:1 1 calc(50% - 5px);min-width:0;padding:10px 14px;}
  .stat b{font-size:21px;}
  .mini-metrics{grid-template-columns:1fr;}
  .topbar__right a:first-child{display:none;}
  .topbar__right .topbar__sep{display:none;}
  .hero__media{padding:0 0 28px 24px;}
}

/* roulang page: category2 */
:root{
  --violet:#5B3DE8;
  --violet-deep:#2A1B6E;
  --aurora:#17B8B0;
  --meteor:#FF7A3D;
  --violet-08:rgba(91,61,232,.08);
  --violet-16:rgba(91,61,232,.16);
  --violet-28:rgba(91,61,232,.28);
  --violet-40:rgba(91,61,232,.4);
  --aurora-08:rgba(23,184,176,.08);
  --ink:#1A1830;
  --ink-2:#5A5773;
  --ink-3:#8A879E;
  --bg:#F7F6FC;
  --bg-alt:#EFEEF9;
  --dark:#0F0C22;
  --dark-2:#171331;
  --line:#E5E3F2;
  --on-dark:#EDEBFA;
  --on-dark-2:#A9A5C6;
  --ok:#2FA36B;
  --warn:#E8A33D;
  --err:#E0564B;
  --grad:linear-gradient(135deg,#5B3DE8 0%,#17B8B0 100%);
  --r-lg:24px;
  --r-hero:28px;
  --r-md:18px;
  --r-img:16px;
  --r-input:12px;
  --r-pill:999px;
  --sh-1:0 6px 20px rgba(26,24,48,.06);
  --sh-2:0 16px 40px rgba(91,61,232,.16);
  --sh-3:0 10px 30px rgba(15,12,34,.28);
  --t-color:180ms ease-out;
  --t-move:240ms cubic-bezier(.2,.8,.2,1);
  --gut:32px;
  --sec:104px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--violet);text-decoration:none;transition:color var(--t-color),background-color var(--t-color),border-color var(--t-color)}
a:hover{color:var(--aurora)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em;line-height:1.32;font-weight:700}
p{margin:0}
button{font-family:inherit;cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--violet);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--gut)}
@media (min-width:1200px){.container{max-width:1320px}}
.section{padding:var(--sec) 0}
.section--alt{background:var(--bg-alt)}
.section--tight{padding-top:72px;padding-bottom:72px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--violet);background:var(--violet-08);
  border:1px solid var(--violet-16);border-radius:var(--r-pill);
  padding:6px 14px;margin-bottom:18px;
}
.eyebrow i{color:var(--aurora);font-size:11px}
h2.section-title{font-size:32px;font-weight:700;margin-bottom:14px}
h2.section-title .bar{
  display:inline-block;width:6px;height:26px;border-radius:4px;
  background:var(--grad);margin-right:12px;vertical-align:-3px;
}
.section-lead{font-size:16.5px;color:var(--ink-2);max-width:720px}
.section-head{margin-bottom:44px}
.center{text-align:center}
.center .section-lead{margin-left:auto;margin-right:auto}

/* ---------- top info bar ---------- */
.topbar{background:var(--dark);color:var(--on-dark-2);font-size:13px;line-height:36px}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px}
.topbar__left{display:flex;align-items:center;gap:10px;white-space:nowrap;overflow:hidden}
.topbar__dot{width:6px;height:6px;border-radius:50%;background:var(--aurora);flex:none;box-shadow:0 0 0 4px rgba(23,184,176,.16)}
.topbar__left b{color:var(--on-dark);font-weight:600}
.topbar__right{display:flex;align-items:center;gap:20px;flex:none}
.topbar__right a{color:var(--on-dark-2);font-weight:600}
.topbar__right a:hover{color:var(--aurora)}
.topbar__right a.is-key{color:var(--meteor)}
@media (max-width:640px){
  .topbar{font-size:12px}
  .topbar__left span.hide-sm{display:none}
  .topbar__right a.hide-sm{display:none}
}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,246,252,.94);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t-color),background-color var(--t-color),backdrop-filter var(--t-color);
}
.site-header.is-stuck{background:rgba(255,255,255,.92);backdrop-filter:blur(10px);box-shadow:0 6px 24px rgba(26,24,48,.07)}
.site-header__inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:68px}
.brand{display:inline-flex;align-items:center;gap:12px;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand__mark{display:inline-flex;align-items:center;gap:3px}
.brand__mark i{display:block;width:6px;height:20px;border-radius:4px;background:var(--grad)}
.brand__mark i:nth-child(2){height:26px;background:linear-gradient(135deg,#17B8B0 0%,#5B3DE8 100%)}
.brand__mark i:nth-child(3){height:16px;background:var(--meteor)}
.brand__text{font-size:19px;font-weight:800;letter-spacing:-.01em}
.main-nav ul{display:flex;align-items:center;gap:6px}
.main-nav a{
  position:relative;display:block;padding:10px 14px;border-radius:10px;
  font-size:15px;font-weight:600;color:var(--ink-2);
}
.main-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;
  background:var(--grad);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform var(--t-move);
}
.main-nav a:hover{color:var(--violet)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.is-active{color:var(--violet);background:var(--violet-08)}
.main-nav a.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;padding:0 11px}
.nav-toggle span{display:block;height:2px;background:var(--ink);border-radius:2px;margin:5px 0;transition:transform var(--t-move),opacity var(--t-color)}
.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)}
@media (max-width:1023px){
  .nav-toggle{display:block}
  .main-nav{
    position:fixed;top:0;right:0;width:min(320px,86vw);height:100vh;z-index:80;
    background:#fff;box-shadow:var(--sh-3);padding:96px 22px 32px;
    transform:translateX(102%);transition:transform var(--t-move);
  }
  .main-nav.is-open{transform:translateX(0)}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:4px}
  .main-nav a{padding:14px 16px;font-size:16px;border-radius:14px}
  .main-nav a::after{display:none}
}
@media (max-width:640px){
  .site-header__inner{min-height:62px;gap:12px}
  .brand__text{font-size:17px}
  .header-actions .btn{display:none}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);font-weight:600;font-size:15px;
  padding:13px 26px;min-height:44px;border:1px solid transparent;
  transition:transform var(--t-move),box-shadow var(--t-move),background-color var(--t-color),color var(--t-color),border-color var(--t-color),filter var(--t-color);
}
.btn--primary{background:var(--grad);color:#fff;box-shadow:0 8px 22px rgba(91,61,232,.28)}
.btn--primary:hover{color:#fff;filter:brightness(1.06);transform:translateY(-1px) scale(1.02);box-shadow:var(--sh-2)}
.btn--ghost{background:transparent;color:var(--violet);border-color:var(--violet-40)}
.btn--ghost:hover{background:var(--violet-08);color:var(--violet-deep);transform:translateY(-1px)}
.btn--light{background:#fff;color:var(--violet-deep);border-color:rgba(255,255,255,.6)}
.btn--light:hover{background:#fff;color:var(--violet);transform:translateY(-1px)}
.btn--sm{padding:9px 18px;font-size:14px;min-height:40px}
.btn--lg{padding:15px 32px;font-size:16px}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--violet)}
.link-arrow i{transition:transform var(--t-move)}
.link-arrow:hover i{transform:translateX(4px)}

/* ---------- slim hero ---------- */
.hero-slim{
  position:relative;color:var(--on-dark);
  background:var(--dark);
  background-image:var(--grad);
  overflow:hidden;
}
.hero-slim::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:100% 46px,46px 100%;
  opacity:.5;pointer-events:none;
}
.hero-slim::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(1.6px 1.6px at 12% 30%,rgba(255,255,255,.85),transparent 60%),
    radial-gradient(1.4px 1.4px at 34% 68%,rgba(255,255,255,.7),transparent 60%),
    radial-gradient(1.8px 1.8px at 58% 22%,rgba(255,255,255,.8),transparent 60%),
    radial-gradient(1.3px 1.3px at 76% 62%,rgba(255,255,255,.65),transparent 60%),
    radial-gradient(1.6px 1.6px at 90% 36%,rgba(255,255,255,.75),transparent 60%);
  opacity:.75;
}
.hero-slim__inner{position:relative;z-index:2;padding:64px 0 60px;max-width:820px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:20px}
.crumbs a{color:rgba(255,255,255,.86)}
.crumbs a:hover{color:#fff}
.crumbs .sep{opacity:.6}
.hero-slim h1{font-size:44px;font-weight:800;line-height:1.26;margin-bottom:16px;color:#fff}
.hero-slim h1 em{font-style:normal;background:linear-gradient(135deg,#fff 0%,#BFF3EF 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-slim p{font-size:16.5px;color:rgba(255,255,255,.86);max-width:620px}
.hero-slim__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-slim__strip{
  position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:10px 26px;
  padding:16px 0 20px;font-size:13px;color:rgba(255,255,255,.78);
  border-top:1px solid rgba(255,255,255,.16);
}
.hero-slim__strip span{display:inline-flex;align-items:center;gap:8px}
.hero-slim__strip i{color:#BFF3EF}
@media (max-width:768px){
  .hero-slim__inner{padding:48px 0 44px}
  .hero-slim h1{font-size:30px}
}

/* ---------- timeline ---------- */
.timeline{position:relative;margin-top:8px}
.timeline::before{
  content:"";position:absolute;left:27px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,rgba(91,61,232,.55) 0%,rgba(23,184,176,.5) 100%);
  border-radius:2px;
}
.tl-item{position:relative;display:grid;grid-template-columns:56px 1fr;gap:22px;padding:0 0 34px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:relative;z-index:2;width:56px;height:56px;border-radius:50%;
  background:#fff;border:1px solid var(--line);box-shadow:var(--sh-1);
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:17px;color:var(--violet);
  font-variant-numeric:tabular-nums;
}
.tl-item:hover .tl-dot{border-color:var(--violet-40);box-shadow:var(--sh-2)}
.tl-body{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px 24px;box-shadow:var(--sh-1);
  transition:transform var(--t-move),box-shadow var(--t-move),border-color var(--t-color);
}
.tl-item:hover .tl-body{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--violet-40)}
.tl-body h3{font-size:19px;margin-bottom:8px}
.tl-body p{color:var(--ink-2);font-size:15px}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;color:var(--violet);
  background:var(--violet-08);border:1px solid var(--violet-16);
  border-radius:var(--r-pill);padding:5px 12px;
}
.tag--aurora{color:#0F8C86;background:var(--aurora-08);border-color:rgba(23,184,176,.24)}
.tag--meteor{color:#C7531E;background:rgba(255,122,61,.1);border-color:rgba(255,122,61,.26)}
.tl-media{
  margin-top:16px;border-radius:var(--r-img);overflow:hidden;
  aspect-ratio:16/9;background:var(--bg-alt);
}
.tl-media img{width:100%;height:100%;object-fit:cover;transition:transform var(--t-move)}
.tl-item:hover .tl-media img{transform:scale(1.03)}
@media (max-width:640px){
  .timeline::before{left:19px}
  .tl-item{grid-template-columns:40px 1fr;gap:14px;padding-bottom:24px}
  .tl-dot{width:40px;height:40px;font-size:14px}
  .tl-body{padding:18px 16px;border-radius:14px}
  .tl-body h3{font-size:17px}
}

/* ---------- metrics ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:52px}
.metric{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px 22px;box-shadow:var(--sh-1);
  transition:transform var(--t-move),box-shadow var(--t-move),border-color var(--t-color);
}
.metric:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--violet-40)}
.metric__num{
  font-size:34px;font-weight:800;line-height:1.1;letter-spacing:-.02em;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  font-variant-numeric:tabular-nums;
}
.metric__num small{font-size:16px;font-weight:700;margin-left:4px;color:var(--ink-2);-webkit-text-fill-color:var(--ink-2)}
.metric__label{font-size:14px;font-weight:700;margin-top:6px}
.metric__desc{font-size:13px;color:var(--ink-3)}
@media (max-width:900px){.metrics{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.metrics{grid-template-columns:1fr;gap:14px}}

/* ---------- checklist ---------- */
.check-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.check-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px 26px;box-shadow:var(--sh-1);height:100%;
  transition:transform var(--t-move),box-shadow var(--t-move),border-color var(--t-color);
}
.check-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--violet-40)}
.check-card__icon{
  width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:var(--violet-08);color:var(--violet);font-size:19px;margin-bottom:16px;
}
.check-card:nth-child(2) .check-card__icon{background:var(--aurora-08);color:#0F8C86}
.check-card:nth-child(3) .check-card__icon{background:rgba(255,122,61,.1);color:#C7531E}
.check-card h3{font-size:19px;margin-bottom:12px}
.check-list li{
  position:relative;padding-left:24px;margin-bottom:10px;
  font-size:14.5px;color:var(--ink-2);
}
.check-list li::before{
  content:"";position:absolute;left:4px;top:11px;width:7px;height:7px;border-radius:50%;
  background:var(--violet);
}
.check-card:nth-child(2) .check-list li::before{background:var(--aurora)}
.check-card:nth-child(3) .check-list li::before{background:var(--meteor)}
@media (max-width:900px){.check-grid{grid-template-columns:1fr 1fr}}
@media (max-width:640px){.check-grid{grid-template-columns:1fr}}

/* ---------- faq ---------- */
.faq-wrap{max-width:800px;margin:0 auto}
.faq-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  text-align:left;padding:20px 24px;font-size:17px;font-weight:700;color:var(--ink);
  min-height:44px;position:relative;transition:color var(--t-color),background-color var(--t-color);
}
.faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;
  background:var(--grad);opacity:0;transition:opacity var(--t-color);
}
.faq-item.is-open .faq-q::before{opacity:1}
.faq-q:hover{color:var(--violet);background:var(--violet-08)}
.faq-q .sign{
  flex:none;width:26px;height:26px;border-radius:50%;border:1px solid var(--violet-40);
  color:var(--violet);display:flex;align-items:center;justify-content:center;
  font-size:15px;line-height:1;transition:transform var(--t-move),background-color var(--t-color),color var(--t-color);
}
.faq-item.is-open .faq-q .sign{transform:rotate(135deg);background:var(--violet);color:#fff;border-color:var(--violet)}
.faq-a{max-height:0;overflow:hidden;transition:max-height var(--t-move)}
.faq-a p{padding:0 24px 22px 24px;font-size:15px;color:var(--ink-2);line-height:1.8}
@media (max-width:640px){
  .faq-q{padding:16px 18px;font-size:16px}
  .faq-a p{padding:0 18px 18px 18px}
}

/* ---------- CTA band ---------- */
.cta-band{position:relative;background:var(--dark);color:var(--on-dark);overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(91,61,232,.92) 0%,rgba(23,184,176,.75) 100%);
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.6;
  background:
    radial-gradient(1.6px 1.6px at 18% 34%,rgba(255,255,255,.8),transparent 60%),
    radial-gradient(1.4px 1.4px at 46% 72%,rgba(255,255,255,.65),transparent 60%),
    radial-gradient(1.7px 1.7px at 72% 28%,rgba(255,255,255,.8),transparent 60%),
    radial-gradient(1.3px 1.3px at 88% 66%,rgba(255,255,255,.6),transparent 60%);
}
.cta-band__inner{position:relative;z-index:2;padding:76px 0;text-align:center}
.cta-band h2{font-size:32px;color:#fff;margin-bottom:14px}
.cta-band p{max-width:640px;margin:0 auto;color:rgba(255,255,255,.86)}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:28px}
@media (max-width:640px){
  .cta-band__inner{padding:52px 0}
  .cta-band h2{font-size:24px}
}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:var(--on-dark-2);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand .brand__text{color:#fff}
.footer-brand p{font-size:14px;margin-top:16px;max-width:300px;color:var(--on-dark-2)}
.footer-col h3{font-size:14px;font-weight:700;color:#C9C4EA;margin-bottom:16px;letter-spacing:.02em}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--on-dark-2);display:inline-block;transition:color var(--t-color),transform var(--t-move)}
.footer-col a:hover{color:var(--aurora);transform:translateX(2px)}
.footer-contact li{font-size:14px;display:flex;gap:10px;align-items:flex-start;margin-bottom:10px}
.footer-contact i{color:var(--aurora);margin-top:5px;font-size:13px}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:#8A879E;
}
.footer-bottom a{color:#8A879E}
.footer-bottom a:hover{color:var(--aurora)}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:30px}}
@media (max-width:640px){.footer-grid{grid-template-columns:1fr;gap:26px}}

/* ---------- floating cta ---------- */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:70;
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 24px;border-radius:var(--r-pill);font-weight:600;font-size:15px;
  background:var(--grad);color:#fff;box-shadow:var(--sh-3);
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity var(--t-color),transform var(--t-move),filter var(--t-color);
}
.float-cta.is-show{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta:hover{color:#fff;filter:brightness(1.06)}
.float-cta.is-lift{transform:translateY(-92px)}
@media (max-width:640px){
  .float-cta{
    left:0;right:0;bottom:0;border-radius:0;justify-content:center;width:100%;
    padding:16px 18px;padding-bottom:calc(16px + env(safe-area-inset-bottom,0px));
    transform:translateY(100%);
  }
  .float-cta.is-show{transform:translateY(0)}
  .float-cta.is-lift{transform:translateY(0)}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}

/* roulang page: category3 */
:root{
  --violet:#5B3DE8;
  --violet-deep:#2A1B6E;
  --cyan:#17B8B0;
  --orange:#FF7A3D;
  --violet-05:rgba(91,61,232,.05);
  --violet-08:rgba(91,61,232,.08);
  --violet-20:rgba(91,61,232,.2);
  --violet-40:rgba(91,61,232,.4);
  --cyan-08:rgba(23,184,176,.08);
  --cyan-20:rgba(23,184,176,.2);
  --orange-08:rgba(255,122,61,.08);
  --orange-20:rgba(255,122,61,.2);
  --bg:#F7F6FC;
  --bg-alt:#EFEEF9;
  --dark:#0F0C22;
  --ink:#1A1830;
  --ink-2:#5A5773;
  --ink-3:#8A879E;
  --on-dark:#EDEBFA;
  --on-dark-2:#A9A5C6;
  --line:#E5E3F2;
  --grad:linear-gradient(135deg,#5B3DE8 0%,#17B8B0 100%);
  --r-xl:28px;
  --r-lg:24px;
  --r-md:18px;
  --r-img:16px;
  --r-input:12px;
  --r-pill:999px;
  --sh-1:0 6px 20px rgba(26,24,48,.06);
  --sh-2:0 16px 40px rgba(91,61,232,.16);
  --sh-3:0 10px 30px rgba(15,12,34,.28);
  --t-color:180ms ease-out;
  --t-move:240ms cubic-bezier(.2,.8,.2,1);
  --container:1200px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  background:var(--bg);
  color:var(--ink);
  font-size:16.5px;
  line-height:1.8;
  font-weight:400;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--violet);text-decoration:none;transition:color var(--t-color)}
a:hover{color:var(--cyan)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em;color:var(--ink)}
p{margin:0 0 1em}
button{font:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--violet);outline-offset:2px;border-radius:8px}
::selection{background:rgba(91,61,232,.18)}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
@media (min-width:1200px){.container{max-width:1320px}}
.section{padding:96px 0}
.section--alt{background:var(--bg-alt)}
@media (max-width:1023px){
  .container{padding:0 24px}
  .section{padding:72px 0}
}
@media (max-width:639px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  body{font-size:16px}
}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:saturate(160%) blur(10px);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
}
.site-header__inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand__mark{
  position:relative;width:34px;height:34px;border-radius:12px;background:var(--grad);
  display:inline-flex;align-items:center;justify-content:center;gap:3px;box-shadow:0 6px 14px rgba(91,61,232,.28);
}
.brand__mark i{display:block;width:4px;height:4px;border-radius:50%;background:#fff;opacity:.92}
.brand__mark i:nth-child(2){opacity:.62;transform:translateY(3px)}
.brand__mark i:nth-child(3){opacity:.78;transform:translateY(-3px)}
.brand__text{font-size:18px;font-weight:800;color:var(--ink);letter-spacing:-.01em}
.main-nav ul{display:flex;align-items:center;gap:2px}
.main-nav a{
  position:relative;display:inline-block;padding:10px 14px;font-size:15px;font-weight:600;
  color:var(--ink-2);border-radius:var(--r-pill);transition:color var(--t-color),background-color var(--t-color);
}
.main-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;border-radius:2px;
  background:var(--grad);transform:scaleX(0);transform-origin:left center;transition:transform var(--t-move);
}
.main-nav a:hover{color:var(--violet-deep)}
.main-nav a:hover::after,.main-nav a.is-active::after{transform:scaleX(1)}
.main-nav a.is-active{color:var(--violet)}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-overlay{
  position:fixed;inset:0;background:rgba(15,12,34,.42);opacity:0;visibility:hidden;
  transition:opacity var(--t-color),visibility var(--t-color);z-index:70;
}
.nav-overlay.is-open{opacity:1;visibility:visible}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;padding:0 11px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-input);
}
.nav-toggle span{display:block;height:2px;width:100%;background:var(--ink);border-radius:2px;transition:transform var(--t-move),opacity var(--t-color)}
.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)}

@media (max-width:1023px){
  .nav-toggle{display:flex}
  .main-nav{
    position:fixed;top:0;right:0;height:100vh;width:min(320px,86vw);background:#fff;z-index:75;
    padding:96px 20px 32px;box-shadow:var(--sh-3);transform:translateX(104%);
    transition:transform var(--t-move);overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0)}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:2px}
  .main-nav a{padding:14px 16px;font-size:16px;border-radius:var(--r-input)}
  .main-nav a::after{display:none}
  .main-nav a.is-active{background:var(--violet-08)}
}
@media (max-width:639px){
  .site-header__inner{height:62px;gap:12px}
  .brand__text{font-size:16.5px}
  .header-actions .btn{display:none}
}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;
  padding:14px 26px;border-radius:var(--r-pill);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;text-align:center;
  transition:transform var(--t-move),box-shadow var(--t-move),background-color var(--t-color),color var(--t-color),border-color var(--t-color),filter var(--t-color);
}
.btn--primary{background:var(--grad);color:#fff;box-shadow:0 8px 22px rgba(91,61,232,.28)}
.btn--primary:hover{filter:brightness(1.06);transform:translateY(-1px) scale(1.02);color:#fff}
.btn--primary:active{transform:translateY(0) scale(1)}
.btn--ghost{background:transparent;color:var(--violet);border-color:var(--violet-40)}
.btn--ghost:hover{background:var(--violet-08);color:var(--violet-deep);transform:translateY(-1px)}
.btn--ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.42)}
.btn--ghost-light:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-1px)}
.btn--sm{padding:10px 18px;font-size:14px;min-height:40px}
.btn--lg{padding:16px 32px;font-size:16px}
.btn--text{
  padding:6px 0;min-height:auto;border-radius:0;color:var(--violet);font-weight:600;
  background:none;border:none;
}
.btn--text .arrow{display:inline-block;transition:transform var(--t-move)}
.btn--text:hover .arrow{transform:translateX(4px)}

/* ===== 面包屑 ===== */
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:20px}
.breadcrumb a{color:var(--ink-3)}
.breadcrumb a:hover{color:var(--violet)}
.breadcrumb .sep{color:var(--ink-3);opacity:.7}
.breadcrumb .current{color:var(--ink-2)}

/* ===== 分类页 Hero（浅色） ===== */
.page-hero{
  position:relative;overflow:hidden;background:var(--bg);
  border-bottom:1px solid var(--line);
  padding:56px 0 88px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(91,61,232,.07) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(91,61,232,.07) 1px,transparent 1px);
  background-size:84px 84px;
  -webkit-mask-image:linear-gradient(180deg,#000 0%,transparent 78%);
  mask-image:linear-gradient(180deg,#000 0%,transparent 78%);
}
.page-hero::after{
  content:"";position:absolute;right:-120px;top:-140px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,rgba(23,184,176,.18),rgba(91,61,232,0) 68%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,.98fr);gap:56px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--r-pill);
  background:var(--violet-08);border:1px solid var(--violet-20);color:var(--violet);
  font-size:13px;font-weight:600;letter-spacing:.02em;
}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:var(--orange);display:block}
.page-hero h1{
  font-size:clamp(30px,3.8vw,46px);line-height:1.2;font-weight:800;margin:18px 0 16px;
}
.hero-lead{font-size:17px;color:var(--ink-2);max-width:560px;margin-bottom:14px}
.hero-sub{font-size:15px;color:var(--ink-3);max-width:560px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-visual{position:relative;padding-bottom:18px}
.hero-visual__frame{
  border-radius:var(--r-xl);overflow:hidden;border:1px solid var(--line);background:#fff;
  box-shadow:var(--sh-2);
}
.hero-visual__frame img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-float{
  position:absolute;left:-14px;bottom:0;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-md);box-shadow:var(--sh-3);padding:14px 18px;display:flex;align-items:center;gap:12px;
}
.hero-float__num{font-size:22px;font-weight:800;color:var(--violet);font-variant-numeric:tabular-nums;line-height:1}
.hero-float__txt{font-size:13px;color:var(--ink-2);line-height:1.5}
@media (max-width:1023px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .page-hero{padding:36px 0 64px}
  .hero-visual{order:2}
}
@media (max-width:639px){
  .hero-actions .btn{width:100%}
  .hero-float{left:0;bottom:-10px;padding:12px 14px}
  .hero-visual{padding-bottom:26px}
}

/* ===== 区块标题 ===== */
.sec-head{max-width:720px;margin-bottom:44px}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--cyan);letter-spacing:.06em;margin-bottom:10px}
.sec-head h2{
  position:relative;font-size:clamp(23px,2.8vw,32px);font-weight:700;line-height:1.35;
  padding-left:18px;margin-bottom:14px;
}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:5px;border-radius:3px;background:var(--grad);
}
.sec-head--center h2{padding-left:0;padding-top:16px}
.sec-head--center h2::before{left:50%;top:0;bottom:auto;width:44px;height:5px;transform:translateX(-50%)}
.sec-sub{font-size:15.5px;color:var(--ink-2);margin:0}

/* ===== 对比表 ===== */
.table-scroll{
  overflow-x:auto;-webkit-overflow-scrolling:touch;
  border:1px solid var(--line);border-radius:var(--r-lg);background:#fff;box-shadow:var(--sh-1);
}
.cmp-table{width:100%;min-width:820px;border-collapse:collapse;font-size:15px;line-height:1.7}
.cmp-table caption{caption-side:top;text-align:left;padding:0 0 14px;font-size:13px;color:var(--ink-3)}
.cmp-table thead th{
  background:var(--grad);color:#fff;font-weight:700;text-align:left;
  padding:18px 20px;font-size:15px;white-space:nowrap;
}
.cmp-table thead th+th{border-left:1px solid rgba(255,255,255,.18)}
.cmp-table tbody th{
  text-align:left;font-weight:700;color:var(--ink);background:var(--bg-alt);
  padding:16px 20px;white-space:nowrap;width:176px;border-top:1px solid var(--line);
  position:relative;
}
.cmp-table tbody th::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:2px;background:var(--violet-40);
}
.cmp-table td{
  padding:16px 20px;border-top:1px solid var(--line);color:var(--ink-2);vertical-align:top;min-width:200px;
}
.cmp-table td strong{color:var(--ink);font-weight:700}
.cmp-table tbody tr:nth-child(even) td{background:var(--violet-05)}
.cmp-table tbody tr:hover td{background:var(--violet-08)}
.cmp-table .tag{
  display:inline-block;padding:3px 10px;border-radius:var(--r-pill);font-size:12.5px;font-weight:600;
  background:var(--cyan-08);color:#0E8A84;border:1px solid var(--cyan-20);
}
.table-note{font-size:13px;color:var(--ink-3);margin-top:16px}

/* ===== 徽章网格 ===== */
.badge-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.badge-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:28px 24px;
  box-shadow:var(--sh-1);transition:transform var(--t-move),box-shadow var(--t-move),border-color var(--t-color);
}
.badge-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--violet-40)}
.badge-card__num{
  font-size:clamp(28px,3.4vw,40px);font-weight:800;line-height:1.1;
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  display:block;
}
.badge-card__num span{font-size:16px;font-weight:700;margin-left:4px}
.badge-card__label{font-size:14px;color:var(--ink-2);margin:10px 0 0}
@media (max-width:1023px){.badge-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:639px){.badge-grid{grid-template-columns:1fr;gap:14px}}

/* ===== 更新记录时间线 ===== */
.timeline{position:relative;padding-left:34px}
.timeline::before{
  content:"";position:absolute;left:5px;top:8px;bottom:12px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,rgba(91,61,232,.55),rgba(23,184,176,.35));
}
.tl-item{position:relative;padding-bottom:32px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-34px;top:7px;width:12px;height:12px;border-radius:50%;
  background:var(--grad);box-shadow:0 0 0 4px var(--violet-08);
}
.tl-date{font-size:13px;font-weight:600;color:var(--violet);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.tl-item h3{font-size:18px;font-weight:700;margin:6px 0 8px}
.tl-item p{font-size:15px;color:var(--ink-2);margin:0;max-width:760px}

/* ===== FAQ ===== */
.faq-wrap{
  max-width:800px;margin:0 auto;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden;
}
.faq-wrap details{border-top:1px solid var(--line);position:relative}
.faq-wrap details:first-child{border-top:0}
.faq-wrap summary{
  list-style:none;cursor:pointer;padding:22px 24px;font-size:17px;font-weight:700;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  transition:color var(--t-color),background-color var(--t-color);
}
.faq-wrap summary::-webkit-details-marker{display:none}
.faq-wrap summary::after{
  content:"+";font-size:22px;font-weight:400;color:var(--violet);line-height:1;
  transition:transform var(--t-move);flex:0 0 auto;
}
.faq-wrap details[open] summary::after{transform:rotate(45deg)}
.faq-wrap details[open] summary::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--grad);
}
.faq-wrap summary:hover{color:var(--violet);background:var(--violet-05)}
.faq-answer{padding:0 24px 24px;font-size:15px;line-height:1.8;color:var(--ink-2)}
.faq-answer p:last-child{margin-bottom:0}
@media (max-width:639px){
  .faq-wrap summary{padding:18px;font-size:16px}
  .faq-answer{padding:0 18px 20px}
}

/* ===== 尾段 CTA ===== */
.cta-band{
  position:relative;overflow:hidden;padding:88px 0;text-align:center;color:var(--on-dark);
  background-image:linear-gradient(135deg,rgba(42,27,110,.94),rgba(15,12,34,.96)),
    url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(circle at 18% 24%,rgba(255,255,255,.14) 1px,transparent 1.6px),
    radial-gradient(circle at 72% 68%,rgba(255,255,255,.12) 1px,transparent 1.6px);
  background-size:180px 180px,240px 240px;opacity:.7;
}
.cta-band .container{position:relative;z-index:1}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,34px);font-weight:800;line-height:1.3;margin-bottom:14px}
.cta-band p{color:var(--on-dark-2);font-size:16px;max-width:620px;margin:0 auto 30px}
.cta-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:14px}
@media (max-width:639px){
  .cta-band{padding:64px 0}
  .cta-actions .btn{width:100%}
}

/* ===== 页脚 ===== */
.site-footer{background:var(--dark);color:var(--on-dark-2);padding:72px 0 28px;font-size:14px}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.12);
}
.site-footer .brand__text{color:#fff}
.footer-col h4{font-size:14px;font-weight:700;color:#C9C3EE;margin-bottom:16px;letter-spacing:.02em}
.footer-col p{color:var(--on-dark-2);font-size:14px;line-height:1.8;margin:16px 0 0;max-width:320px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:var(--on-dark-2);display:inline-block;transition:color var(--t-color),transform var(--t-move)}
.footer-col a:hover{color:var(--cyan);transform:translateX(2px)}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;
  padding-top:22px;font-size:13px;color:#8E8AAB;
}
.footer-bottom strong{color:#C9C3EE;font-weight:600}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:639px){
  .site-footer{padding:56px 0 24px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}