/* roulang page: index */
:root{
  --ink-950:#0A0E11;--ink-900:#0F1418;--ink-700:#232B32;--ink-500:#4C5560;
  --paper:#F6F6F2;--paper-2:#ECEDE7;--line:#E2E4DD;
  --accent:#C9F24A;--accent-hover:#B4DC2E;--accent-ink:#0A0E11;
  --teal:#0E5B4E;--warn:#E2552F;
  --r-xs:8px;--r-sm:12px;--r-md:18px;--r-lg:26px;--r-pill:999px;
  --sh-1:0 1px 2px rgba(10,14,17,.06);
  --sh-2:0 18px 40px -24px rgba(10,14,17,.30);
  --nav-h:72px;--wrap:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{margin:0;font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;font-size:16px;line-height:1.75;font-weight:400;color:var(--ink-950);background:var(--paper);overflow-x:hidden}
img{max-width:100%;display:block}
a{color:var(--teal);text-decoration:none}
button,input{font-family:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em}
h1{font-size:clamp(34px,5.2vw,60px);line-height:1.12;font-weight:700;letter-spacing:-.02em}
h2{font-size:clamp(26px,3.4vw,40px);line-height:1.2;font-weight:700}
h3{font-size:20px;line-height:1.35;font-weight:600}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:var(--r-pill);font-size:15px;font-weight:600;line-height:1;text-decoration:none;border:1px solid transparent;cursor:pointer;transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease}
.btn-accent{background:var(--accent);color:var(--accent-ink)}
.btn-accent:hover{background:var(--accent-hover);color:var(--accent-ink);transform:translateY(-1px)}
.btn-accent:active{transform:translateY(0)}
.btn-ghost-light{border-color:rgba(255,255,255,.5);color:#fff;background:transparent}
.btn-ghost-light:hover{background:#fff;border-color:#fff;color:var(--ink-950);transform:translateY(-1px)}
.btn-ghost-dark{border-color:var(--ink-950);color:var(--ink-950);background:transparent}
.btn-ghost-dark:hover{background:var(--ink-950);color:#fff;transform:translateY(-1px)}
.btn:focus-visible{outline:2px solid var(--teal);outline-offset:2px}
.u-line{background-image:linear-gradient(currentColor,currentColor);background-repeat:no-repeat;background-position:0 100%;background-size:0% 1px;transition:background-size .22s ease}
.u-line:hover,.u-line:focus-visible{background-size:100% 1px}
.link-text{color:var(--teal);font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:6px}
.link-text span{transition:transform .22s ease}
.link-text:hover span{transform:translateX(4px)}

/* ===== 导航 ===== */
.site-nav{position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--nav-h);display:flex;align-items:center;background:rgba(10,14,17,.42);-webkit-backdrop-filter:blur(14px) saturate(150%);backdrop-filter:blur(14px) saturate(150%);border-bottom:1px solid rgba(255,255,255,.12);transition:height .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease}
.site-nav.is-scrolled{height:64px;background:rgba(246,246,242,.94);border-bottom-color:var(--line);box-shadow:0 8px 24px -20px rgba(10,14,17,.45)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;transition:color .2s ease}
.site-nav.is-scrolled .brand{color:var(--ink-950)}
.brand__mark{position:relative;width:26px;height:26px;flex:0 0 auto;border-radius:8px;background:var(--accent)}
.brand__mark::after{content:"";position:absolute;inset:8px;border-radius:3px;background:var(--accent-ink)}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{position:relative;display:inline-block;padding:6px 0;font-size:15px;font-weight:500;color:rgba(255,255,255,.86);transition:color .2s ease}
.site-nav.is-scrolled .nav-links a{color:var(--ink-700)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .22s ease,height .18s ease,background-color .18s ease}
.nav-links a:hover::after,.nav-links a:focus-visible::after{transform:scaleX(1)}
.nav-links a.is-active{color:#fff}
.site-nav.is-scrolled .nav-links a.is-active{color:var(--ink-950)}
.nav-links a.is-active::after{height:4px;bottom:-6px;border-radius:2px;background:var(--accent);transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:14px}
.nav-icon{width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.28);background:transparent;color:#fff;cursor:pointer;transition:border-color .2s ease,background .2s ease,color .2s ease}
.nav-icon:hover{border-color:var(--accent);color:var(--accent)}
.site-nav.is-scrolled .nav-icon{border-color:var(--line);color:var(--ink-700)}
.site-nav.is-scrolled .nav-icon:hover{border-color:var(--teal);color:var(--teal)}
.nav-icon svg{width:17px;height:17px}
.nav-toggle{display:none}
.nav-cta{height:42px;padding:0 20px;font-size:14px}
.mobile-panel{position:fixed;inset:0;z-index:1200;display:flex;flex-direction:column;padding:22px;background:rgba(10,14,17,.96);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);transform:translateX(100%);visibility:hidden;transition:transform .32s cubic-bezier(.2,.7,.2,1),visibility .32s}
.mobile-panel.is-open{transform:translateX(0);visibility:visible}
.mobile-panel__head{display:flex;align-items:center;justify-content:space-between}
.mobile-panel__close{width:40px;height:40px;border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.28);background:transparent;color:#fff;font-size:20px;line-height:1;cursor:pointer}
.mobile-panel__links{margin-top:48px;display:flex;flex-direction:column;gap:8px}
.mobile-panel__links a{color:#fff;font-size:18px;font-weight:600;padding:16px 0;border-bottom:1px solid rgba(255,255,255,.10)}
.mobile-panel__links a.is-active{color:var(--accent)}
.mobile-panel__foot{margin-top:auto;padding-top:24px}

/* ===== Hero ===== */
.hero{position:relative;min-height:min(88vh,760px);display:flex;align-items:center;padding:calc(var(--nav-h) + 68px) 0 76px;background-color:var(--ink-950);background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(10,14,17,.93) 0%,rgba(10,14,17,.83) 36%,rgba(10,14,17,.38) 100%)}
.hero::after{content:"";position:absolute;inset:0;opacity:.04;pointer-events:none;background-image:linear-gradient(rgba(255,255,255,.75) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.75) 1px,transparent 1px);background-size:52px 52px}
.hero .wrap{position:relative;z-index:2}
.hero-inner{max-width:760px}
.hero-tag{display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:var(--r-pill);border:1px solid rgba(201,242,74,.45);color:var(--accent);font-size:13px;font-weight:600;letter-spacing:.04em;margin-bottom:26px}
.hero-tag i{width:7px;height:7px;border-radius:50%;background:var(--accent);display:block}
.hero h1{color:#fff;max-width:15ch}
.hero-sub{margin-top:24px;max-width:640px;font-size:17px;line-height:1.8;color:rgba(255,255,255,.76)}
.hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px}
.hero-badges{margin-top:30px;display:flex;flex-wrap:wrap;gap:10px}
.hero-badges li{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.2);color:rgba(255,255,255,.82);font-size:13.5px;background:rgba(255,255,255,.05)}
.hero-badges li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent);flex:0 0 auto}

/* ===== 板块通用 ===== */
.section{padding:96px 0}
.section--alt{background:var(--paper-2)}
.sec-head{max-width:720px}
.sec-eyebrow{font-size:13px;font-weight:600;letter-spacing:.12em;color:var(--teal);margin-bottom:14px}
.sec-lead{margin-top:18px;font-size:16px;color:var(--ink-500);max-width:640px}
.sec-head--row{max-width:none;display:flex;align-items:flex-end;justify-content:space-between;gap:32px;flex-wrap:wrap}
.sec-head--row .sec-lead{margin-top:14px}
.reveal{opacity:0;transform:translateY(12px);transition:opacity .26s cubic-bezier(.2,.7,.2,1),transform .26s cubic-bezier(.2,.7,.2,1)}
.reveal.is-in{opacity:1;transform:translateY(0)}

/* ===== 编号卖点 ===== */
.points{margin-top:44px;border-bottom:1px solid var(--line)}
.point{display:grid;grid-template-columns:200px 1fr;gap:40px;align-items:start;padding:38px 0;border-top:1px solid var(--line)}
.point__num{font-size:clamp(48px,6vw,72px);line-height:1;font-weight:700;font-variant-numeric:tabular-nums;color:transparent;-webkit-text-stroke:1.5px rgba(76,85,96,.55);letter-spacing:-.02em}
.point__body h3{margin-bottom:12px}
.point__body p{color:var(--ink-500);font-size:15.5px;max-width:640px}
.point__meta{margin-top:14px;display:flex;flex-wrap:wrap;gap:10px}
.chip{display:inline-flex;align-items:center;padding:6px 14px;border-radius:var(--r-xs);background:rgba(14,91,78,.08);color:var(--teal);font-size:12.5px;font-weight:600;letter-spacing:.03em}

/* ===== 场景图文 ===== */
.scene{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.scene + .scene{margin-top:92px}
.scene--flip .scene__media{order:2}
.scene__media{border-radius:var(--r-md);overflow:hidden;background:var(--line);aspect-ratio:16/10}
.scene__media img{width:100%;height:100%;object-fit:cover}
.scene__body h3{margin-bottom:14px}
.scene__body > p{color:var(--ink-500);font-size:15.5px}
.scene-list{margin-top:20px;display:flex;flex-direction:column;gap:10px}
.scene-list li{position:relative;padding-left:22px;font-size:15px;color:var(--ink-700)}
.scene-list li::before{content:"";position:absolute;left:0;top:11px;width:11px;height:2px;background:var(--accent);border-radius:1px}
.scene__link{margin-top:22px}

/* ===== 内容卡片 ===== */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:44px}
.post-card{display:flex;flex-direction:column;height:100%;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);transition:transform .26s cubic-bezier(.2,.7,.2,1),box-shadow .26s ease,border-color .26s ease}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--teal)}
.post-card__media{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--paper-2)}
.post-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.2,.7,.2,1)}
.post-card:hover .post-card__media img{transform:scale(1.04)}
.post-card__body{display:flex;flex-direction:column;flex:1;padding:24px}
.cat-badge{align-self:flex-start;padding:5px 12px;border-radius:var(--r-xs);background:rgba(14,91,78,.08);color:var(--teal);font-size:12px;font-weight:600;letter-spacing:.04em;margin-bottom:14px}
.post-card__title{font-size:18px;line-height:1.45;margin-bottom:12px}
.post-card__title a{color:var(--ink-950);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card:hover .post-card__title a{background-size:100% 1px}
.post-card__excerpt{color:var(--ink-500);font-size:14.5px;line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post-card__foot{margin-top:auto;padding-top:20px;display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid var(--line);margin-top:22px}
.post-card__foot time{font-size:13px;color:var(--ink-500);font-variant-numeric:tabular-nums}
.post-card__more{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:600;color:var(--teal)}
.post-card__more span{transition:transform .22s ease}
.post-card:hover .post-card__more span{transform:translateX(4px)}
.empty-state{grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:14px;padding:64px 24px;border:1px dashed var(--line);border-radius:var(--r-md);background:#fff;text-align:center}
.empty-state__icon{width:44px;height:44px;border-radius:50%;background:rgba(14,91,78,.08);display:flex;align-items:center;justify-content:center;color:var(--teal);font-size:20px;font-weight:700}
.empty-state p{color:var(--ink-500);font-size:15px}

/* ===== 社会认同 ===== */
.proof{display:grid;grid-template-columns:0.85fr 1.15fr;gap:64px;align-items:start}
.proof__stats{display:flex;flex-direction:column;gap:36px}
.stat{display:flex;flex-direction:column;gap:6px;padding-bottom:28px;border-bottom:1px solid var(--line)}
.stat:last-child{border-bottom:0;padding-bottom:0}
.stat__num{font-size:clamp(34px,4vw,48px);line-height:1;font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.stat__num small{font-size:15px;font-weight:600;margin-left:6px;color:var(--ink-500)}
.stat__label{font-size:14.5px;color:var(--ink-500)}
.proof__quotes{display:flex;flex-direction:column;gap:24px}
.quote{margin:0;padding:28px;border-radius:var(--r-md);background:#fff;border:1px solid var(--line)}
.quote:nth-child(2){margin-left:44px}
.quote::before{content:"";display:block;width:36px;height:3px;border-radius:2px;background:var(--accent);margin-bottom:18px}
.quote blockquote{margin:0;font-size:16px;line-height:1.8;color:var(--ink-700)}
.quote figcaption{margin-top:18px;display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--ink-500)}
.quote figcaption strong{color:var(--ink-950);font-weight:600}

/* ===== FAQ ===== */
.faq-acc{margin-top:36px}
.faq-acc .accordion-item{background:transparent;border:0;border-top:1px solid var(--line)}
.faq-acc .accordion-item:last-child{border-bottom:1px solid var(--line)}
.faq-acc .accordion-button{background:transparent;color:var(--ink-950);font-size:16px;font-weight:600;line-height:1.6;padding:24px 48px 24px 0;border-radius:0;box-shadow:none;transition:color .2s ease}
.faq-acc .accordion-button:not(.collapsed){color:var(--teal);background:transparent;box-shadow:none}
.faq-acc .accordion-button:focus{box-shadow:none}
.faq-acc .accordion-button:focus-visible{outline:2px solid var(--teal);outline-offset:-2px}
.faq-acc .accordion-button::after{flex-shrink:0;width:16px;height:16px;margin-left:auto;content:"";background-image:linear-gradient(var(--ink-500),var(--ink-500)),linear-gradient(var(--ink-500),var(--ink-500));background-size:16px 2px,2px 16px;background-position:center,center;background-repeat:no-repeat;transform:none;transition:background-size .26s ease,background-image .26s ease,transform .26s ease}
.faq-acc .accordion-button:not(.collapsed)::after{background-image:linear-gradient(var(--teal),var(--teal)),linear-gradient(var(--teal),var(--teal));background-size:16px 2px,0 16px;transform:rotate(180deg)}
.faq-acc .accordion-body{padding:0 48px 26px 0;font-size:15px;line-height:1.8;color:var(--ink-500)}

/* ===== 底部 CTA ===== */
.cta-band{margin:0 auto;background:var(--ink-950);border-radius:var(--r-lg);padding:64px 56px;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;border:1px solid rgba(255,255,255,.08)}
.cta-band h2{color:#fff;max-width:20ch}
.cta-band p{margin-top:14px;color:rgba(255,255,255,.68);font-size:15.5px;max-width:52ch}
.cta-band__actions{display:flex;gap:14px;flex-wrap:wrap}

/* ===== 页脚 ===== */
.site-footer{background:var(--ink-950);color:rgba(255,255,255,.72);padding:76px 0 0;margin-top:96px;border-top:1px solid rgba(255,255,255,.10)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:48px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700}
.footer-about{margin-top:18px;font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.62);max-width:34ch}
.footer-col h3{color:#fff;font-size:14px;font-weight:600;letter-spacing:.06em;margin-bottom:20px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{color:rgba(255,255,255,.72);font-size:14.5px;transition:color .2s ease}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-col address{font-style:normal;font-size:14.5px;line-height:1.9;color:rgba(255,255,255,.62)}
.footer-bottom{margin-top:64px;padding:24px 0;border-top:1px solid rgba(255,255,255,.10);display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.5)}

/* ===== 移动端转化条 ===== */
.mobile-bar{position:fixed;left:0;right:0;bottom:0;z-index:900;display:none;align-items:center;justify-content:space-between;gap:12px;padding:0 16px env(safe-area-inset-bottom);height:calc(64px + env(safe-area-inset-bottom));background:rgba(10,14,17,.92);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-top:1px solid rgba(255,255,255,.12);transform:translateY(110%);transition:transform .3s ease,opacity .3s ease}
.mobile-bar.is-show{transform:translateY(0)}
.mobile-bar.is-hidden{opacity:0;pointer-events:none}
.mobile-bar__text{color:#fff;font-size:14px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mobile-bar .btn{height:44px;padding:0 22px;flex:0 0 auto}

/* ===== 响应式 ===== */
@media (min-width:1400px){:root{--wrap:1280px}}
@media (max-width:1200px){
  .point{grid-template-columns:160px 1fr;gap:32px}
  .scene{gap:44px}
  .proof{gap:48px}
}
@media (max-width:992px){
  .section{padding:64px 0}
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:inline-flex}
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .proof{grid-template-columns:1fr;gap:44px}
  .quote:nth-child(2){margin-left:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
  .cta-band{padding:48px 36px}
  .scene + .scene{margin-top:64px}
}
@media (max-width:768px){
  .wrap{padding:0 20px}
  .hero{min-height:72vh;padding:calc(var(--nav-h) + 48px) 0 56px}
  .hero-sub{font-size:15.5px}
  .section{padding:56px 0}
  .point{grid-template-columns:1fr;gap:16px;padding:28px 0}
  .point__num{font-size:44px}
  .scene{grid-template-columns:1fr;gap:24px}
  .scene--flip .scene__media{order:0}
  .post-grid{grid-template-columns:1fr;gap:20px}
  .post-card__body{padding:18px}
  .faq-acc .accordion-button{padding:20px 44px 20px 0;font-size:15.5px}
  .faq-acc .accordion-body{padding:0 0 22px 0}
  .cta-band{padding:40px 24px;border-radius:var(--r-md)}
  .mobile-bar{display:flex}
  .site-footer{margin-top:64px;padding-top:56px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
}
@media (max-width:576px){
  .section{padding:44px 0}
  .hero h1{max-width:none}
  .hero-actions .btn{flex:1 1 auto}
  .btn{height:44px;padding:0 20px}
  .proof__quotes .quote{padding:22px}
}
@media (max-width:360px){
  .wrap{padding:0 16px}
  .brand{font-size:15px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink-950:#0A0E11;--ink-900:#0F1418;--ink-700:#232B32;--ink-500:#4C5560;
  --paper:#F6F6F2;--paper-2:#ECEDE7;--line:#E2E4DD;
  --accent:#C9F24A;--accent-hover:#B4DC2E;--accent-ink:#0A0E11;
  --teal:#0E5B4E;--warn:#E2552F;
  --r-xs:8px;--r-sm:12px;--r-md:18px;--r-lg:26px;--r-pill:999px;
  --shadow-1:0 1px 2px rgba(10,14,17,.06);
  --shadow-2:0 18px 40px -24px rgba(10,14,17,.30);
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink-700);font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;font-variant-numeric:tabular-nums}
img{max-width:100%;height:auto;display:block}
a{color:var(--teal);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--ink-950)}
button{font:inherit;cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700}
p{margin:0}
ul,ol{margin:0}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1400px){.wrap{max-width:1280px}}
@media (max-width:768px){.wrap{padding:0 20px}}
.link-more{position:relative;font-size:15px;font-weight:600;color:var(--teal);background-image:linear-gradient(currentColor,currentColor);background-repeat:no-repeat;background-position:0 100%;background-size:0 1px;transition:background-size .22s var(--ease),color .2s}
.link-more:hover{color:var(--teal);background-size:100% 1px}

/* ---------- 导航 ---------- */
.site-nav{position:fixed;top:0;left:0;right:0;z-index:80;height:72px;display:flex;align-items:center;background:rgba(10,14,17,.42);-webkit-backdrop-filter:blur(14px) saturate(150%);backdrop-filter:blur(14px) saturate(150%);border-bottom:1px solid rgba(255,255,255,.12);transition:height .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease)}
.nav-inner{display:flex;align-items:center;gap:24px;height:100%}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;letter-spacing:.01em;white-space:nowrap}
.brand:hover{color:#fff}
.brand__mark{width:20px;height:20px;border-radius:6px;background:var(--accent);box-shadow:0 0 0 4px rgba(201,242,74,.14);flex:none}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:24px}
.nav-links a{position:relative;font-size:15px;color:rgba(255,255,255,.86);padding:6px 0;white-space:nowrap}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;width:100%;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease)}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:#fff}
.nav-links a.is-active::after{transform:scaleX(1)}
.nav-links__cta{display:none}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-icon{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.06);color:#fff;transition:background .2s var(--ease),border-color .2s var(--ease),color .2s}
.nav-icon svg{width:18px;height:18px}
.nav-icon:hover{background:rgba(255,255,255,.16)}
.nav-toggle{display:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--r-pill);font-size:15px;font-weight:600;border:1px solid transparent;white-space:nowrap;transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease)}
.btn-accent{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.btn-accent:hover{background:var(--accent-hover);border-color:var(--accent-hover);color:var(--accent-ink);transform:translateY(-1px)}
.btn-accent:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.btn-ghost:hover{background:#fff;color:var(--ink-950);border-color:#fff}
.btn:focus-visible{outline:2px solid var(--teal);outline-offset:2px}
.nav-cta{height:40px;padding:0 18px;font-size:14px}
.site-nav.is-scrolled{height:64px;background:rgba(246,246,242,.94);border-bottom-color:var(--line);box-shadow:0 1px 12px rgba(10,14,17,.07)}
.site-nav.is-scrolled .brand{color:var(--ink-900)}
.site-nav.is-scrolled .nav-links a{color:var(--ink-700)}
.site-nav.is-scrolled .nav-links a:hover,.site-nav.is-scrolled .nav-links a.is-active{color:var(--ink-950)}
.site-nav.is-scrolled .nav-icon{color:var(--ink-700);border-color:rgba(10,14,17,.16);background:rgba(10,14,17,.03)}
.site-nav.is-scrolled .nav-icon:hover{background:rgba(10,14,17,.08)}

/* ---------- 阅读进度条 ---------- */
.read-bar{position:fixed;top:0;left:0;right:0;height:3px;z-index:90;pointer-events:none;background:transparent}
.read-bar span{display:block;height:100%;width:0;background:var(--accent);transition:width .12s linear}

/* ---------- 文章头部 ---------- */
.article-hero{position:relative;padding:136px 0 60px;background:var(--ink-950) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;border-radius:0 0 var(--r-lg) var(--r-lg);overflow:hidden}
.article-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,14,17,.88),rgba(10,14,17,.66) 46%,rgba(10,14,17,.92))}
.article-hero .wrap{position:relative;z-index:1}
.crumb{margin-bottom:24px}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;padding:0;font-size:13.5px;color:rgba(255,255,255,.6)}
.crumb li{display:flex;align-items:center;gap:8px;min-width:0}
.crumb li+li::before{content:"›";color:rgba(255,255,255,.35)}
.crumb a{color:rgba(255,255,255,.78)}
.crumb a:hover{color:var(--accent)}
.crumb li[aria-current="page"]{display:block;max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:rgba(255,255,255,.55)}
.article-hero h1{font-size:clamp(30px,4.4vw,50px);line-height:1.18;letter-spacing:-.02em;color:#fff;font-weight:700;max-width:920px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;margin-top:24px;font-size:13.5px;color:rgba(255,255,255,.72)}
.badge-cat{display:inline-flex;align-items:center;height:28px;padding:0 13px;border-radius:var(--r-xs);background:rgba(201,242,74,.16);color:var(--accent);font-size:12px;font-weight:600;letter-spacing:.04em}

/* ---------- 正文布局 ---------- */
.article-main{padding:64px 0 72px;background:var(--paper)}
.article-layout{display:grid;grid-template-columns:minmax(0,760px) 240px;gap:56px;justify-content:center;align-items:start}
.article-body{font-size:17.5px;line-height:1.9;color:var(--ink-700);min-width:0}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body>p:first-of-type{font-size:18.5px;color:var(--ink-900)}
.article-body h2{position:relative;font-size:clamp(22px,2.4vw,28px);line-height:1.32;padding-left:18px;margin:2.1em 0 .8em;color:var(--ink-900);font-weight:700;scroll-margin-top:96px}
.article-body h2::before{content:"";position:absolute;left:0;top:.26em;width:4px;height:18px;border-radius:2px;background:var(--accent)}
.article-body h3{font-size:20px;line-height:1.4;margin:1.6em 0 .6em;color:var(--ink-900);font-weight:700;scroll-margin-top:96px}
.article-body h4{font-size:17px;margin:1.4em 0 .5em;color:var(--ink-900);font-weight:600}
.article-body strong{color:var(--ink-900);font-weight:600}
.article-body ul{list-style:none;padding-left:0;margin:0 0 1.2em}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:.55em}
.article-body ul li::before{content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--accent)}
.article-body ol{list-style:none;counter-reset:artn;padding-left:0;margin:0 0 1.2em}
.article-body ol li{counter-increment:artn;position:relative;padding-left:38px;margin-bottom:.6em}
.article-body ol li::before{content:counter(artn,decimal-leading-zero);position:absolute;left:0;top:.18em;font-size:12px;font-weight:700;line-height:1.6;color:var(--teal);background:rgba(14,91,78,.09);border-radius:var(--r-xs);padding:1px 7px}
.article-body blockquote{margin:1.7em 0;padding:20px 22px;background:var(--paper-2);border-left:3px solid var(--accent);border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--ink-700);font-size:16.5px}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-md);margin:1.7em auto .5em;max-width:100%}
.article-body figure{margin:1.7em 0}
.article-body figcaption{font-size:13px;color:var(--ink-500);text-align:center;margin-top:.5em}
.article-body a{color:var(--teal);border-bottom:1px solid rgba(14,91,78,.3)}
.article-body a:hover{color:var(--ink-950);border-bottom-color:var(--ink-950)}
.article-body table{width:100%;min-width:520px;border-collapse:collapse;font-size:15px;line-height:1.7}
.article-body .table-wrap{overflow-x:auto;margin:1.6em 0;border:1px solid var(--line);border-radius:var(--r-sm)}
.article-body th,.article-body td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line)}
.article-body thead th{background:var(--paper-2);font-weight:600;color:var(--ink-900);font-size:14px}
.article-body tbody tr:last-child td{border-bottom:0}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}
.article-body code{background:var(--paper-2);border-radius:6px;padding:2px 6px;font-size:14.5px;color:var(--ink-900)}

/* ---------- 目录 ---------- */
.article-toc{position:sticky;top:92px;align-self:start}
.toc-toggle{display:none}
.toc-title{font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--ink-500);margin-bottom:14px}
.toc-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:2px;max-height:62vh;overflow-y:auto}
.toc-list a{display:block;font-size:14px;line-height:1.55;color:var(--ink-500);padding:7px 12px;border-left:2px solid transparent;border-radius:0 var(--r-xs) var(--r-xs) 0;transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease)}
.toc-list a:hover{color:var(--ink-900);background:var(--paper-2);border-left-color:var(--line)}
.toc-list a.is-current{color:var(--teal);background:rgba(201,242,74,.16);border-left-color:var(--accent);font-weight:600}

/* ---------- 空态 ---------- */
.empty-block{padding:36px 28px;border:1px dashed var(--line);border-radius:var(--r-md);background:var(--paper-2);text-align:center}
.empty-title{font-size:20px;font-weight:600;color:var(--ink-900);margin-bottom:10px}
.empty-desc{font-size:15px;color:var(--ink-500);margin-bottom:22px}

/* ---------- 文末 ---------- */
.article-foot{padding:0 0 8px;background:var(--paper)}
.article-foot .wrap{max-width:1064px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.tag{display:inline-flex;align-items:center;height:32px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-pill);background:var(--paper);font-size:13px;color:var(--ink-700)}
.post-nav{display:flex;justify-content:space-between;align-items:center;gap:16px;padding-top:26px;border-top:1px solid var(--line);font-size:15px}
.post-nav a{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--ink-900);position:relative}
.post-nav a::after{content:"";position:absolute;left:0;bottom:-4px;width:100%;height:1px;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease)}
.post-nav a:hover{color:var(--teal)}
.post-nav a:hover::after{transform:scaleX(1)}

/* ---------- 相关推荐 ---------- */
.related{padding:64px 0 80px;background:var(--paper-2);border-top:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:36px}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.22}
.section-sub{margin-top:10px;font-size:15px;color:var(--ink-500)}
.card-post{display:flex;flex-direction:column;height:100%;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;box-shadow:var(--shadow-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease)}
.card-post:hover{transform:translateY(-4px);border-color:var(--teal);box-shadow:var(--shadow-2);color:var(--ink-900)}
.card-post__media{aspect-ratio:16/9;overflow:hidden;background:var(--paper-2)}
.card-post__media img{width:100%;height:100%;object-fit:cover;transition:transform .42s var(--ease)}
.card-post:hover .card-post__media img{transform:scale(1.04)}
.card-post__body{padding:24px;display:flex;flex-direction:column;flex:1 1 auto}
.card-post__body h3{font-size:18px;line-height:1.45;margin:14px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;color:var(--ink-900)}
.card-post__body p{font-size:14.5px;line-height:1.7;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card-post__foot{margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-500)}
.card-post__arrow{display:inline-flex;align-items:center;gap:6px;color:var(--teal);font-weight:600;transition:transform .24s var(--ease)}
.card-post:hover .card-post__arrow{transform:translateX(4px)}

/* ---------- 文末 CTA ---------- */
.cta-zone{padding:0 0 88px;background:var(--paper-2)}
.cta-band{position:relative;overflow:hidden;background:var(--ink-950);border-radius:var(--r-lg);padding:52px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;color:#fff}
.cta-band::after{content:"";position:absolute;inset:0;background:url('/assets/images/backpic/back-3.webp') center/cover no-repeat;opacity:.16}
.cta-band>*{position:relative;z-index:1}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,32px);line-height:1.24;max-width:640px}
.cta-band p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.72);max-width:560px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-950);color:rgba(255,255,255,.72);padding:72px 0 28px;border-top:1px solid rgba(255,255,255,.10)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff}
.footer-brand:hover{color:#fff}
.footer-about{margin-top:16px;font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.62);max-width:340px}
.footer-col h3{font-size:14px;font-weight:600;letter-spacing:.06em;color:rgba(255,255,255,.9);margin-bottom:18px}
.footer-col ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-col address{margin:0;font-style:normal;font-size:14.5px;line-height:2;color:rgba(255,255,255,.62)}
.footer-bottom{margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.10);display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;color:rgba(255,255,255,.5)}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .26s var(--ease),transform .26s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .article-layout{gap:40px}
}
@media (max-width:992px){
  .article-hero{padding:120px 0 48px}
  .article-main{padding:48px 0 56px}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:28px}
  .article-toc{position:static;order:-1}
  .toc-toggle{display:flex;width:100%;align-items:center;justify-content:space-between;height:48px;padding:0 16px;background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-sm);font-size:15px;font-weight:600;color:var(--ink-900)}
  .toc-title{display:none}
  .toc-panel{display:none;padding:12px 0 0}
  .toc-panel.is-open{display:block}
  .toc-list{max-height:none;flex-direction:row;flex-wrap:wrap;gap:8px}
  .toc-list a{border-left:0;border:1px solid var(--line);border-radius:var(--r-pill);padding:6px 14px}
  .toc-list a.is-current{border-color:var(--accent)}
  .article-body{font-size:17px;line-height:1.85}
  .nav-links{position:fixed;inset:0;z-index:70;margin:0;flex-direction:column;justify-content:center;align-items:flex-start;gap:4px;padding:96px 32px 40px;background:rgba(10,14,17,.94);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);opacity:0;visibility:hidden;transform:translateY(-10px);transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s}
  .nav-links.is-open{opacity:1;visibility:visible;transform:none}
  .nav-links a{font-size:18px;color:#fff;padding:14px 0;width:100%;border-bottom:1px solid rgba(255,255,255,.10)}
  .nav-links a::after{display:none}
  .nav-links__cta{display:inline-flex;margin-top:26px;width:auto}
  .nav-cta{display:none}
  .nav-toggle{display:inline-flex}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .article-hero{padding:108px 0 40px;border-radius:0 0 var(--r-md) var(--r-md)}
  .article-hero h1{font-size:clamp(26px,7vw,34px)}
  .article-main{padding:40px 0 48px}
  .crumb li[aria-current="page"]{max-width:200px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .post-nav{flex-direction:column;align-items:flex-start}
  .post-nav__next{margin-left:0}
  .related{padding:48px 0 56px}
  .cta-zone{padding-bottom:64px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:576px){
  .article-hero{padding:100px 0 34px}
  .btn{height:44px;padding:0 20px;font-size:14.5px}
  .card-post__body{padding:18px}
  .article-body{font-size:16.5px}
}
@media (max-width:360px){
  .wrap{padding:0 16px}
  .brand{font-size:15px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --ink-950:#0A0E11;--ink-900:#0F1418;--ink-700:#232B32;--ink-500:#4C5560;
  --paper:#F6F6F2;--paper-2:#ECEDE7;--line:#E2E4DD;
  --accent:#C9F24A;--accent-hover:#B4DC2E;--accent-ink:#0A0E11;
  --teal:#0E5B4E;--warn:#E2552F;
  --r-xs:8px;--r-sm:12px;--r-md:18px;--r-lg:26px;--r-pill:999px;
  --shadow-card:0 1px 2px rgba(10,14,17,.06);
  --shadow-hover:0 18px 40px -24px rgba(10,14,17,.30);
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;background:var(--paper);color:var(--ink-900);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;line-height:1.75;font-weight:400;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--teal);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--ink-900)}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink-900)}
p{margin:0}
ul,ol{margin:0;padding:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:4px}

.wrap{max-width:1200px;margin:0 auto;padding:0 24px;width:100%}
@media (min-width:1400px){.wrap{max-width:1280px}}
@media (max-width:768px){.wrap{padding:0 20px}}

/* ---------- 导航 ---------- */
.site-nav{
  position:fixed;top:0;left:0;right:0;z-index:1040;
  background:rgba(10,14,17,.42);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
  backdrop-filter:blur(14px) saturate(150%);
  border-bottom:1px solid rgba(255,255,255,.12);
  transition:background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .2s var(--ease)}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;letter-spacing:-.01em;color:#fff}
.brand:hover{color:#fff}
.brand__mark{width:13px;height:13px;border-radius:4px;background:var(--accent);flex:none;box-shadow:0 0 0 4px rgba(201,242,74,.16)}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:rgba(255,255,255,.82);
  padding:6px 2px;
  background-image:linear-gradient(currentColor,currentColor);
  background-size:0% 1px;background-repeat:no-repeat;background-position:0 100%;
  transition:background-size .22s var(--ease),color .22s var(--ease);
}
.nav-links a:hover{color:#fff;background-size:100% 1px}
.nav-links a.is-active{color:#fff}
.nav-links a.is-active::after{content:"";position:absolute;left:0;right:0;bottom:-12px;height:4px;border-radius:2px;background:var(--accent)}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-icon{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.06);
  color:#fff;cursor:pointer;transition:background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.nav-icon svg{width:18px;height:18px}
.nav-icon:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.4)}
.nav-toggle{display:none}
.site-nav.is-scrolled{background:rgba(246,246,242,.94);border-bottom-color:var(--line);box-shadow:0 6px 26px -20px rgba(10,14,17,.55)}
.site-nav.is-scrolled .nav-inner{height:64px}
.site-nav.is-scrolled .brand{color:var(--ink-900)}
.site-nav.is-scrolled .nav-links a{color:var(--ink-500)}
.site-nav.is-scrolled .nav-links a:hover,
.site-nav.is-scrolled .nav-links a.is-active{color:var(--ink-900)}
.site-nav.is-scrolled .nav-icon{border-color:var(--line);background:#fff;color:var(--ink-900)}
.site-nav.is-scrolled .nav-icon:hover{background:var(--paper-2);border-color:var(--ink-500)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-accent{background:var(--accent);color:var(--accent-ink)}
.btn-accent:hover{background:var(--accent-hover);color:var(--accent-ink);transform:translateY(-1px)}
.btn-accent:active{transform:translateY(0)}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
.btn-ghost-light:hover{background:#fff;border-color:#fff;color:var(--ink-900)}
.btn-ghost-dark{background:transparent;border-color:var(--ink-900);color:var(--ink-900)}
.btn-ghost-dark:hover{background:var(--ink-900);color:#fff}
.nav-cta{height:42px;padding:0 20px;font-size:14px}

/* ---------- 移动端菜单 ---------- */
.mobile-panel{
  position:fixed;inset:0;z-index:1035;
  background:rgba(10,14,17,.94);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  display:flex;flex-direction:column;justify-content:center;gap:36px;
  padding:96px 28px 48px;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
}
.mobile-panel.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.mobile-nav{display:flex;flex-direction:column;gap:22px}
.mobile-nav a{font-size:19px;font-weight:600;color:rgba(255,255,255,.86);padding-bottom:12px;border-bottom:1px solid rgba(255,255,255,.12)}
.mobile-nav a.is-active{color:var(--accent)}
.mobile-panel .btn{width:100%}
body.nav-open{overflow:hidden}

/* ---------- 页面横幅 ---------- */
.page-hero{
  position:relative;color:#fff;overflow:hidden;
  padding:158px 0 76px;
  border-radius:0 0 var(--r-lg) var(--r-lg);
  background:
    linear-gradient(90deg,rgba(10,14,17,.90) 0%,rgba(10,14,17,.70) 52%,rgba(10,14,17,.42) 100%),
    url(/assets/images/backpic/back-2.webp) center/cover no-repeat;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.04;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:44px 44px;
}
.page-hero .wrap{position:relative;z-index:2}
.crumbs{font-size:13px;color:rgba(255,255,255,.66);margin-bottom:22px}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:0;margin:0}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"›";color:rgba(255,255,255,.4)}
.crumbs a{color:rgba(255,255,255,.8)}
.crumbs a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.crumbs [aria-current]="page"]{color:#fff}
.page-hero h1{
  color:#fff;font-size:clamp(34px,5.2vw,58px);line-height:1.12;letter-spacing:-.02em;font-weight:700;
  max-width:16ch;
}
.page-hero .lede{margin-top:20px;max-width:640px;font-size:17px;line-height:1.8;color:rgba(255,255,255,.82);font-weight:400}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.hero-tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 15px;border-radius:var(--r-pill);
  font-size:13px;font-weight:500;color:rgba(255,255,255,.9);
  border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.06);
}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:block}

/* ---------- 文档布局 ---------- */
.doc-section{padding:76px 0 88px}
.doc-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:56px;align-items:start}
.doc-toc{position:sticky;top:96px}
.doc-toc h2{
  font-size:12px;font-weight:600;letter-spacing:.12em;color:var(--ink-500);
  text-transform:uppercase;margin-bottom:14px;
}
.doc-toc ul{list-style:none;display:flex;flex-direction:column;gap:4px}
.doc-toc a{
  display:block;padding:9px 14px;border-radius:var(--r-pill);
  font-size:14px;font-weight:500;color:var(--ink-500);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.doc-toc a:hover{background:var(--paper-2);color:var(--ink-900)}
.doc-toc a.is-current{background:var(--accent);color:var(--accent-ink);font-weight:600}
.toc-note{
  margin-top:20px;padding:16px;border-radius:var(--r-md);
  background:var(--paper-2);font-size:13px;line-height:1.7;color:var(--ink-500);
}
.toc-note a{font-weight:600}

/* ---------- 正文 ---------- */
.prose{max-width:820px;font-size:16px;line-height:1.85;color:var(--ink-700)}
.prose section{scroll-margin-top:100px}
.prose h2{
  position:relative;
  font-size:clamp(23px,2.6vw,30px);line-height:1.3;font-weight:700;color:var(--ink-900);
  margin:58px 0 18px;padding-left:18px;letter-spacing:-.01em;
}
.prose section:first-child h2{margin-top:0}
.prose h2::before{content:"";position:absolute;left:0;top:.2em;width:4px;height:1.02em;border-radius:2px;background:var(--accent)}
.prose h3{font-size:19px;line-height:1.4;font-weight:600;color:var(--ink-900);margin:30px 0 10px}
.prose p{margin:16px 0}
.prose .lead{font-size:18px;line-height:1.85;color:var(--ink-900)}
.prose strong{font-weight:600;color:var(--ink-900)}
.prose a{font-weight:500;background-image:linear-gradient(var(--teal),var(--teal));background-size:0% 1px;background-repeat:no-repeat;background-position:0 100%;transition:background-size .22s var(--ease)}
.prose a:hover{background-size:100% 1px;color:var(--teal)}

.checklist{list-style:none;margin:20px 0;display:flex;flex-direction:column;gap:11px}
.checklist li{position:relative;padding-left:26px;color:var(--ink-700)}
.checklist li::before{content:"";position:absolute;left:0;top:.68em;width:10px;height:10px;border-radius:3px;background:var(--accent)}

ol.steps{list-style:none;counter-reset:st;margin:22px 0;display:flex;flex-direction:column;gap:2px}
ol.steps li{
  counter-increment:st;position:relative;padding:18px 0 18px 68px;border-top:1px solid var(--line);
}
ol.steps li:last-child{border-bottom:1px solid var(--line)}
ol.steps li::before{
  content:counter(st,decimal-leading-zero);
  position:absolute;left:0;top:17px;
  font-size:18px;font-weight:700;color:var(--teal);letter-spacing:.02em;
}
ol.steps li b{display:block;font-size:16px;font-weight:600;color:var(--ink-900);margin-bottom:2px}
ol.steps li span{font-size:15px;color:var(--ink-500);line-height:1.75}

.doc-figure{margin:28px 0;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);background:#fff}
.doc-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}
.doc-figure figcaption{padding:12px 18px;font-size:13px;color:var(--ink-500);background:var(--paper);border-top:1px solid var(--line)}

.quote{
  margin:26px 0;padding:20px 22px;border-left:3px solid var(--accent);
  background:var(--paper-2);border-radius:0 var(--r-sm) var(--r-sm) 0;
  font-size:15px;line-height:1.85;color:var(--ink-700);
}
.quote b{color:var(--ink-900);font-weight:600}

.table-scroll{overflow-x:auto;margin:26px 0;border:1px solid var(--line);border-radius:var(--r-md);background:#fff;-webkit-overflow-scrolling:touch}
table.info-table{width:100%;min-width:660px;border-collapse:collapse;font-size:15px}
.info-table caption{text-align:left;padding:16px 20px 0;font-size:13px;color:var(--ink-500)}
.info-table th{
  background:var(--paper-2);text-align:left;font-weight:600;color:var(--ink-900);
  padding:14px 20px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.info-table td{padding:14px 20px;border-bottom:1px solid var(--line);color:var(--ink-500);line-height:1.7}
.info-table tr:last-child td{border-bottom:0}

.tip-list{border-top:1px solid var(--line);margin-top:24px}
.tip{display:grid;grid-template-columns:56px 1fr;gap:20px;padding:22px 0;border-bottom:1px solid var(--line)}
.tip__num{font-size:24px;font-weight:700;color:var(--ink-500);opacity:.34;line-height:1.2;letter-spacing:-.02em}
.tip h3{margin:0 0 6px;font-size:17px}
.tip p{font-size:15px;color:var(--ink-500);line-height:1.8}

/* ---------- FAQ ---------- */
.faq-acc{margin-top:26px;border-top:1px solid var(--line)}
.faq-acc .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)}
.faq-acc .accordion-header{margin:0}
.faq-acc .accordion-button{
  background:transparent;box-shadow:none;padding:20px 40px 20px 0;
  font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.6;
  border-radius:0;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--teal);background:transparent;box-shadow:none}
.faq-acc .accordion-button:focus{box-shadow:none;outline:2px solid var(--teal);outline-offset:-2px}
.faq-acc .accordion-button::after{
  width:16px;height:16px;background-size:16px;background-position:center;
  transition:transform .26s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(180deg)}
.faq-acc .accordion-body{padding:0 40px 22px 0;font-size:15px;line-height:1.85;color:var(--ink-500)}

/* ---------- CTA ---------- */
.cta-block{padding:0 0 88px}
.cta-inner{
  background:var(--ink-950);color:#fff;border-radius:var(--r-lg);
  padding:60px 56px;display:flex;align-items:center;justify-content:space-between;gap:40px;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.08);
}
.cta-inner h2{color:#fff;font-size:clamp(24px,3vw,34px);line-height:1.25;letter-spacing:-.01em;margin-bottom:12px}
.cta-inner p{color:rgba(255,255,255,.72);font-size:15px;line-height:1.8;max-width:520px}
.cta-actions{display:flex;gap:12px;flex:none;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-950);color:rgba(255,255,255,.72);border-top:1px solid rgba(255,255,255,.10);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff}
.footer-brand:hover{color:#fff}
.footer-about{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:340px}
.footer-col h3{color:#fff;font-size:14px;font-weight:600;letter-spacing:.04em;margin-bottom:16px}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:11px}
.footer-col a,.footer-col address{font-style:normal;font-size:14px;line-height:1.75;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px)}
.reveal.is-in{opacity:1;transform:none;transition:opacity .26s var(--ease),transform .26s var(--ease)}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .doc-layout{grid-template-columns:210px minmax(0,1fr);gap:40px}
  .cta-inner{padding:52px 44px}
}
@media (max-width:992px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .nav-cta{display:none}
  .page-hero{padding:132px 0 60px}
  .doc-section{padding:56px 0 64px}
  .doc-layout{grid-template-columns:1fr;gap:32px}
  .doc-toc{position:static;top:auto;background:var(--paper-2);border-radius:var(--r-md);padding:18px}
  .doc-toc h2{margin-bottom:12px}
  .doc-toc ul{flex-direction:row;flex-wrap:nowrap;overflow-x:auto;gap:8px;padding-bottom:4px}
  .doc-toc li{flex:none}
  .doc-toc a{background:#fff;white-space:nowrap}
  .toc-note{display:none}
  .prose h2{margin-top:44px}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:44px 34px}
  .cta-actions{width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:768px){
  .brand{font-size:15px}
  .brand__mark{width:11px;height:11px}
  .page-hero{padding:118px 0 48px;border-radius:0 0 var(--r-md) var(--r-md)}
  .page-hero .lede{font-size:15.5px}
  .doc-section{padding:44px 0 52px}
  .prose{font-size:16px}
  .prose .lead{font-size:17px}
  .cta-block{padding-bottom:64px}
  .faq-acc .accordion-body{padding-right:16px}
  .faq-acc .accordion-button{padding-right:34px}
}
@media (max-width:576px){
  .wrap{padding:0 20px}
  .page-hero{padding:106px 0 40px}
  .hero-tags{gap:8px;margin-top:20px}
  .hero-tag{font-size:12px;padding:6px 12px}
  .doc-toc{padding:14px}
  .tip{grid-template-columns:40px 1fr;gap:14px}
  .tip__num{font-size:20px}
  ol.steps li{padding-left:54px}
  .cta-inner{padding:36px 24px;border-radius:var(--r-md)}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .btn{height:44px;padding:0 22px}
}
@media (max-width:360px){
  .page-hero h1{font-size:30px}
  .brand span:last-child{font-size:14px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --ink-950:#0A0E11; --ink-900:#0F1418; --ink-700:#232B32; --ink-500:#4C5560;
  --paper:#F6F6F2; --paper-2:#ECEDE7; --line:#E2E4DD;
  --accent:#C9F24A; --accent-hover:#B4DC2E; --accent-ink:#0A0E11;
  --teal:#0E5B4E; --warn:#E2552F;
  --r-xs:8px; --r-sm:12px; --r-md:18px; --r-lg:26px; --r-pill:999px;
  --sh-1:0 1px 2px rgba(10,14,17,.06);
  --sh-2:0 18px 40px -24px rgba(10,14,17,.30);
  --nav-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink-900);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;line-height:1.75;font-weight:400;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--teal);text-decoration:none;transition:color .18s ease}
button{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.01em}
h1{font-size:clamp(34px,5.2vw,58px);line-height:1.12;letter-spacing:-0.02em}
h2{font-size:clamp(26px,3.4vw,38px);line-height:1.2}
h3{font-size:21px;line-height:1.35;font-weight:600}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
figure{margin:0}
::selection{background:var(--accent);color:var(--accent-ink)}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:4px}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--paper2{background:var(--paper-2)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:40px}
.section-head .eyebrow{font-size:13px;font-weight:600;letter-spacing:.16em;color:var(--teal);text-transform:uppercase;margin-bottom:12px}
.section-head p{max-width:640px;color:var(--ink-500);margin-top:12px}
.lead{font-size:17px;line-height:1.85;color:var(--ink-500)}

/* ---------- 按钮 ---------- */
.btn-accent,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.01em;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-accent{background:var(--accent);color:var(--accent-ink)}
.btn-accent:hover{background:var(--accent-hover);color:var(--accent-ink);transform:translateY(-1px)}
.btn-accent:active{transform:translateY(0)}
.btn-accent:focus-visible{outline:2px solid var(--teal);outline-offset:2px}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-ghost:hover{background:#fff;color:var(--ink-900);border-color:#fff;transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-ghost--dark{color:var(--ink-900);border-color:var(--ink-900)}
.btn-ghost--dark:hover{background:var(--ink-900);color:#fff;border-color:var(--ink-900)}
.btn-lg{height:52px;padding:0 30px;font-size:16px}

.link-more{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--teal);
  background-image:linear-gradient(currentColor,currentColor);
  background-repeat:no-repeat;background-position:0 100%;background-size:0% 1px;
  transition:background-size .22s ease,color .18s ease;
}
.link-more:hover{background-size:100% 1px;color:var(--teal)}
.link-more svg{transition:transform .22s ease}
.link-more:hover svg{transform:translateX(4px)}

/* ---------- 导航 ---------- */
.site-nav{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  height:var(--nav-h);display:flex;align-items:center;
  background:rgba(10,14,17,.42);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
  backdrop-filter:blur(14px) saturate(150%);
  border-bottom:1px solid rgba(255,255,255,.12);
  transition:height .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.site-nav.is-scrolled{
  height:64px;background:rgba(246,246,242,.94);
  border-bottom-color:var(--line);box-shadow:0 8px 26px -20px rgba(10,14,17,.5);
}
.nav-inner{display:flex;align-items:center;gap:28px;width:100%}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:#fff;letter-spacing:-0.01em}
.brand__mark{width:12px;height:12px;border-radius:3px;background:var(--accent);flex:none}
.site-nav.is-scrolled .brand{color:var(--ink-900)}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-links a{
  position:relative;font-size:14px;font-weight:500;color:rgba(255,255,255,.78);
  padding:24px 0;background-image:linear-gradient(currentColor,currentColor);
  background-repeat:no-repeat;background-position:0 100%;background-size:0% 1px;
  transition:color .18s ease,background-size .22s ease;
}
.nav-links a:hover{color:#fff;background-size:100% 1px}
.nav-links a.is-active{color:#fff}
.nav-links a.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;border-radius:2px;background:var(--accent);
}
.site-nav.is-scrolled .nav-links a{color:var(--ink-500)}
.site-nav.is-scrolled .nav-links a:hover{color:var(--ink-900)}
.site-nav.is-scrolled .nav-links a.is-active{color:var(--ink-900)}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-links + .nav-right{margin-left:0}
.nav-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.20);
  color:#fff;cursor:pointer;transition:background .18s ease,border-color .18s ease,color .18s ease;
}
.nav-icon svg{width:18px;height:18px}
.nav-icon:hover{background:rgba(255,255,255,.2)}
.site-nav.is-scrolled .nav-icon{background:rgba(10,14,17,.05);border-color:var(--line);color:var(--ink-900)}
.site-nav.is-scrolled .nav-icon:hover{background:rgba(10,14,17,.10)}
.nav-toggle{display:none}
.nav-cta{height:42px;padding:0 20px;font-size:14px}

/* ---------- 面包屑 ---------- */
.crumb{margin-bottom:22px}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.62)}
.crumb li{display:flex;align-items:center;gap:8px}
.crumb li+li::before{content:"›";color:rgba(255,255,255,.4)}
.crumb a{color:rgba(255,255,255,.72)}
.crumb a:hover{color:#fff}
.crumb [aria-current="page"]{color:rgba(255,255,255,.94)}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;color:#fff;background:var(--ink-950);
  padding:148px 0 88px;
}
.page-hero__bg{
  position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.page-hero__bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(112deg,rgba(10,14,17,.94) 0%,rgba(10,14,17,.80) 44%,rgba(10,14,17,.42) 100%);
}
.page-hero__grid{
  position:absolute;inset:0;opacity:.035;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.9) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:56px 56px;
}
.page-hero .wrap{position:relative;z-index:2}
.tag-line{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:var(--r-pill);font-size:12px;font-weight:600;letter-spacing:.04em;
  color:rgba(255,255,255,.86);border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.06);
}
.tag--accent{background:rgba(201,242,74,.16);border-color:rgba(201,242,74,.42);color:var(--accent)}
.hero-title{max-width:820px}
.hero-sub{max-width:660px;margin-top:22px;font-size:17px;line-height:1.85;color:rgba(255,255,255,.76)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:14px 34px;margin-top:44px;padding-top:26px;
  border-top:1px solid rgba(255,255,255,.14);
}
.hero-facts div{font-size:14px;color:rgba(255,255,255,.68)}
.hero-facts strong{display:block;font-size:22px;font-weight:700;color:#fff;line-height:1.3}

/* ---------- 锚点条 ---------- */
.anchor-bar{
  position:sticky;top:64px;z-index:1020;
  background:rgba(246,246,242,.93);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.anchor-scroll{display:flex;gap:10px;overflow-x:auto;padding:14px 0;scrollbar-width:none}
.anchor-scroll::-webkit-scrollbar{display:none}
.pill{
  flex:none;display:inline-flex;align-items:center;height:38px;padding:0 18px;
  border-radius:var(--r-pill);border:1px solid var(--line);background:#fff;
  font-size:14px;font-weight:500;color:var(--ink-700);
  transition:background .18s ease,border-color .18s ease,color .18s ease,transform .18s ease;
}
.pill:hover{border-color:var(--teal);color:var(--teal);transform:translateY(-1px)}
.pill.is-active{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);font-weight:600}

/* ---------- 图文交错卡片流 ---------- */
.flow-block + .flow-block{margin-top:72px}
.flow-media{
  border-radius:var(--r-md);overflow:hidden;background:var(--paper-2);
  box-shadow:var(--sh-1);transition:transform .28s ease,box-shadow .28s ease;
}
.flow-media img{width:100%;aspect-ratio:16/11;object-fit:cover;transition:transform .5s ease}
.flow-media:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.flow-media:hover img{transform:scale(1.03)}
.flow-text .num{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--teal);margin-bottom:12px;
}
.flow-text h3{margin-bottom:14px}
.flow-text p{color:var(--ink-500);font-size:16px;line-height:1.8}
.tick-list{margin-top:20px;display:grid;gap:12px}
.tick-list li{position:relative;padding-left:24px;font-size:15px;color:var(--ink-700);line-height:1.7}
.tick-list li::before{
  content:"";position:absolute;left:0;top:9px;width:10px;height:10px;border-radius:2px;
  background:rgba(201,242,74,.85);border:1px solid rgba(10,14,17,.12);
}
.flow-text .link-more{margin-top:24px}

/* ---------- 对比双列 ---------- */
.compare-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.compare-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:32px;box-shadow:var(--sh-1);height:100%;
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.compare-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--teal)}
.compare-card h3{margin-bottom:8px}
.compare-card .hint{font-size:14px;color:var(--ink-500);margin-bottom:20px}
.compare-card--offset{margin-top:36px}
.compare-list{display:grid;gap:14px}
.compare-list li{
  position:relative;padding-left:28px;font-size:15px;color:var(--ink-700);line-height:1.7;
  padding-bottom:14px;border-bottom:1px solid var(--line);
}
.compare-list li:last-child{border-bottom:0;padding-bottom:0}
.compare-list li::before{
  content:"";position:absolute;left:0;top:8px;width:14px;height:14px;border-radius:50%;
  background:rgba(14,91,78,.10);border:1px solid rgba(14,91,78,.35);
}
.compare-card--warn .compare-list li::before{background:rgba(226,85,47,.10);border-color:rgba(226,85,47,.45)}

/* ---------- 步骤条 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;position:relative}
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:32px 24px 28px;box-shadow:var(--sh-1);
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--teal)}
.step__num{
  display:inline-flex;align-items:center;justify-content:center;
  width:46px;height:46px;border-radius:var(--r-pill);
  background:var(--accent);color:var(--accent-ink);
  font-size:16px;font-weight:700;letter-spacing:.04em;margin-bottom:18px;
}
.step h3{font-size:19px;margin-bottom:10px}
.step p{font-size:15px;color:var(--ink-500);line-height:1.75}
.step__time{margin-top:16px;font-size:13px;font-weight:600;color:var(--teal)}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 0;background:none;border:0;text-align:left;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--ink-900);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--teal)}
.faq-q[aria-expanded="true"]{color:var(--teal)}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:var(--r-pill);
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:#fff;color:var(--ink-700);
  font-size:15px;line-height:1;transition:transform .26s ease,background .26s ease,color .26s ease,border-color .26s ease;
}
.faq-q[aria-expanded="true"] .faq-icon{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);transform:rotate(45deg)}
.faq-a{padding:0 0 26px;max-width:780px;font-size:15px;line-height:1.85;color:var(--ink-500)}

/* ---------- 底部提示条 ---------- */
.notice{
  display:flex;flex-wrap:wrap;gap:16px 28px;align-items:center;justify-content:space-between;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px 28px;box-shadow:var(--sh-1);margin-top:40px;
}
.notice p{font-size:15px;color:var(--ink-700)}
.notice strong{color:var(--ink-900)}

/* ---------- CTA 大区块 ---------- */
.cta-block{
  background:var(--ink-950);color:#fff;border-radius:var(--r-lg);
  padding:64px 56px;display:flex;flex-wrap:wrap;gap:28px;
  align-items:center;justify-content:space-between;
  position:relative;overflow:hidden;
}
.cta-block::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(201,242,74,.22) 0%,rgba(201,242,74,0) 70%);
}
.cta-block h2{max-width:560px;position:relative;z-index:1}
.cta-block p{margin-top:14px;max-width:600px;color:rgba(255,255,255,.72);font-size:16px;position:relative;z-index:1}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:1}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-950);color:rgba(255,255,255,.72);padding:72px 0 0;border-top:1px solid rgba(255,255,255,.10)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:52px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-about{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:320px}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:18px;letter-spacing:.02em}
.footer-col ul{display:grid;gap:12px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-col address{font-style:normal;font-size:14px;line-height:1.9;color:rgba(255,255,255,.62)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;
  padding:22px 0 30px;border-top:1px solid rgba(255,255,255,.10);
  font-size:13px;color:rgba(255,255,255,.52);
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .26s cubic-bezier(.2,.7,.2,1),transform .26s cubic-bezier(.2,.7,.2,1)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
}

/* ---------- 响应式 ---------- */
@media (min-width:1400px){
  .wrap{max-width:1280px}
}
@media (max-width:1200px){
  .nav-links{gap:20px}
  .cta-block{padding:52px 40px}
}
@media (max-width:992px){
  .section{padding:64px 0}
  .section--tight{padding:52px 0}
  .page-hero{padding:124px 0 68px}
  .nav-links{
    position:fixed;inset:0;z-index:1040;
    display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:4px;
    padding:110px 28px 44px;
    background:rgba(10,14,17,.96);
    -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
    opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-10px);
    transition:opacity .24s ease,transform .24s ease,visibility .24s ease;
  }
  .nav-links.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:none}
  .nav-links a{
    width:100%;font-size:18px;color:#fff;padding:16px 0;
    border-bottom:1px solid rgba(255,255,255,.12);background-image:none;
  }
  .nav-links a:hover,.nav-links a.is-active{color:var(--accent)}
  .nav-links a.is-active::after{display:none}
  .nav-toggle{display:inline-flex;z-index:1041}
  .nav-cta{display:none}
  .steps{grid-template-columns:1fr;gap:18px}
  .compare-grid{grid-template-columns:1fr}
  .compare-card--offset{margin-top:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .anchor-bar{top:64px}
}
@media (max-width:768px){
  .wrap{padding:0 20px}
  .section{padding:56px 0}
  .section-head{margin-bottom:32px}
  .page-hero{padding:112px 0 56px}
  .hero-sub{font-size:16px}
  .hero-actions .btn-accent,.hero-actions .btn-ghost{width:100%}
  .flow-block + .flow-block{margin-top:52px}
  .cta-block{padding:40px 26px;border-radius:var(--r-md)}
  .cta-actions{width:100%}
  .cta-actions .btn-accent,.cta-actions .btn-ghost{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .faq-q{font-size:15px}
}
@media (max-width:576px){
  .section{padding:44px 0}
  .section--tight{padding:40px 0}
  .page-hero{padding:104px 0 48px}
  .hero-facts{gap:12px 22px}
  .hero-facts strong{font-size:19px}
  .compare-card{padding:24px 20px}
  .step{padding:26px 20px}
  .notice{padding:20px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:360px){
  .wrap{padding:0 16px}
  h1{font-size:30px}
  .btn-accent,.btn-ghost,.btn-lg{height:44px;padding:0 18px;font-size:14px}
}