/* roulang page: index */
:root{
  --bg:#FAF8F5;--surface:#FFFFFF;--surface-2:#F2EFEA;--line:#E7E3DC;
  --ink-900:#0B0B12;--ink-700:#2C2C36;--ink-500:#6E6E7A;--ink-300:#A9A6A0;
  --primary:#4B3FD6;--primary-600:#3A2FBD;--primary-050:#EEECFB;
  --accent:#E8703A;--accent-050:#FDEDE4;--danger:#C0392B;--success:#1F8A5B;
  --r-xs:6px;--r-sm:8px;--r-md:12px;--r-lg:18px;--r-pill:999px;
  --shadow-1:0 1px 2px rgba(11,11,18,.04),0 10px 28px -18px rgba(11,11,18,.18);
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink-900);font-family:var(--font);
  font-size:16px;line-height:1.85;font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary-600)}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:10px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:background-color .2s ease,color .2s ease,transform .2s ease,border-color .2s ease;
}
.btn svg{width:18px;height:18px;transition:transform .2s ease}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-600);color:#fff;transform:translateY(-1px)}
.btn-primary:hover svg{transform:translateX(2px)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:transparent;border-color:var(--line);color:var(--ink-900)}
.btn-outline:hover{background:var(--surface-2);color:var(--ink-900)}
.btn-ghost{background:transparent;color:var(--ink-700);border-color:transparent}
.btn-ghost:hover{background:var(--surface-2);color:var(--ink-900)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary)}
.link-arrow svg{width:16px;height:16px;transition:transform .2s ease}
.link-arrow:hover svg{transform:translateX(2px)}
.text-link{color:var(--primary);border-bottom:1px solid var(--primary);padding-bottom:2px;transition:border-color .2s ease,color .2s ease}
.text-link:hover{border-color:var(--primary-600);color:var(--primary-600)}

/* ---------- 徽章 / 标签 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:var(--r-pill);font-size:12px;font-weight:500;background:var(--primary-050);color:var(--primary);white-space:nowrap}
.badge-accent{background:var(--accent-050);color:var(--accent)}
.badge-dark{background:rgba(255,255,255,.1);color:#fff}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:600;color:var(--primary);letter-spacing:.02em}
.eyebrow::before{content:"";width:3px;height:14px;background:var(--primary);border-radius:2px}
.eyebrow-dark{color:#B9B4FF}
.eyebrow-dark::before{background:var(--accent)}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:100;background:transparent;transition:background-color .25s ease,border-color .25s ease}
.site-header.is-scrolled{background:rgba(250,248,245,.96);border-bottom:1px solid var(--line)}
.nav-wrap{display:grid;grid-template-columns:54% 46%;align-items:center;height:64px}
.nav-left{display:flex;align-items:center;gap:36px;min-width:0}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink-900)}
.brand:hover{color:var(--ink-900)}
.brand-mark{width:34px;height:34px;flex:0 0 34px;display:grid;place-items:center;border-radius:10px;background:var(--ink-900);color:#fff}
.brand-mark svg{width:18px;height:18px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:-.01em}
.brand-text span{font-size:12px;letter-spacing:.08em;color:var(--ink-500)}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{position:relative;font-size:15px;font-weight:500;color:var(--ink-700);padding:6px 0}
.nav-links a::after{content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;background:var(--primary);transition:width .22s ease,left .22s ease}
.nav-links a:hover{color:var(--ink-900)}
.nav-links a:hover::after{width:100%;left:0}
.nav-links a[aria-current="page"]{color:var(--ink-900);font-weight:600}
.nav-links a[aria-current="page"]::after{width:100%;left:0}
.nav-right{display:flex;align-items:center;justify-content:flex-end;gap:12px}
.icon-btn{width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:transparent;display:grid;place-items:center;cursor:pointer;color:var(--ink-700);transition:background-color .2s ease,border-color .2s ease,color .2s ease}
.icon-btn:hover{background:var(--surface-2);color:var(--ink-900);border-color:var(--ink-300)}
.icon-btn svg{width:18px;height:18px}
.nav-toggle{display:none}
.search-bar{display:none;border-top:1px solid var(--line);background:var(--bg)}
.search-bar.is-open{display:block}
.search-bar form{display:flex;gap:10px;padding:14px 0}
.search-bar input{flex:1;height:48px;border:1px solid var(--line);border-radius:10px;background:var(--surface);padding:0 16px}
.search-bar input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-050)}

/* ---------- 首屏 ---------- */
.hero{padding:56px 0 88px}
.hero-grid{display:grid;grid-template-columns:54% 46%;gap:48px;align-items:center}
.hero-copy{min-width:0}
.hero-title{font-size:clamp(28px,3.4vw,44px);line-height:1.2;font-weight:700;letter-spacing:-.01em;margin:20px 0 18px}
.hero-title em{font-style:normal;color:var(--primary)}
.hero-sub{font-size:18px;line-height:1.7;color:var(--ink-500);max-width:30em}
.hero-cta{display:flex;gap:12px;margin:28px 0 22px;flex-wrap:wrap}
.trust-row{display:flex;flex-wrap:wrap;gap:10px;font-size:13px;color:var(--ink-500)}
.trust-row span{display:inline-flex;align-items:center;gap:10px}
.trust-row span:not(:last-child)::after{content:"";width:3px;height:3px;border-radius:50%;background:var(--ink-300)}
.hero-visual{position:relative;min-width:0}
.hero-visual img{width:100%;aspect-ratio:4/5;object-fit:cover;border-radius:var(--r-lg);background:var(--surface-2)}
.hero-fallback{width:100%;aspect-ratio:4/5;border-radius:var(--r-lg);background-color:var(--ink-900);background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);background-size:20px 20px}
.info-card{position:absolute;left:-8px;bottom:26px;width:min(300px,86%);background:var(--ink-900);color:#fff;border-radius:14px;padding:18px 20px;box-shadow:var(--shadow-1)}
.info-card .k{font-size:12px;letter-spacing:.08em;color:rgba(255,255,255,.6);text-transform:uppercase}
.info-card .v{font-size:15px;font-weight:600;margin-top:6px;line-height:1.5}
.info-card .row{display:flex;align-items:center;justify-content:space-between;margin-top:12px;padding-top:12px;border-top:1px solid rgba(255,255,255,.14);font-size:13px;color:rgba(255,255,255,.72)}
.info-card .row svg{width:16px;height:16px;color:var(--accent)}

/* ---------- 数据条 ---------- */
.stats-bar{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:36px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:0 24px;border-left:1px solid var(--line)}
.stat:first-child{border-left:0;padding-left:0}
.stat .num{font-size:clamp(30px,3vw,44px);font-weight:800;line-height:1.1;color:var(--accent);letter-spacing:-.01em}
.stat .num small{font-size:18px;font-weight:700;margin-left:2px}
.stat p{margin-top:8px;font-size:14px;color:var(--ink-500);line-height:1.6}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0}
.section-line{border-top:1px solid var(--line)}
.section-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,340px);gap:32px;align-items:end;margin-bottom:48px}
.sec-head-left{display:flex;align-items:baseline;gap:16px;min-width:0}
.sec-num{font-size:14px;font-weight:700;color:var(--accent);letter-spacing:.06em;flex:0 0 auto}
.sec-title{font-size:clamp(22px,2.2vw,32px);line-height:1.3;font-weight:700;letter-spacing:-.01em}
.sec-note{font-size:15px;color:var(--ink-500);line-height:1.7}
.sec-note .link-arrow{margin-top:8px}

/* ---------- 痛点 ---------- */
.pain-grid{display:grid;grid-template-columns:minmax(0,360px) minmax(0,1fr);gap:56px;align-items:start}
.pain-aside h2{font-size:clamp(22px,2.2vw,32px);line-height:1.3;font-weight:700;margin:14px 0 12px}
.pain-aside p{font-size:15px;color:var(--ink-500)}
.pain-list{border-top:1px solid var(--line)}
.pain-item{display:flex;align-items:center;gap:16px;min-height:64px;padding:14px 4px;border-bottom:1px solid var(--line);font-size:16px;color:var(--ink-700);transition:transform .2s ease,background-color .2s ease,box-shadow .2s ease}
.pain-item::before{content:"";width:2px;height:0;background:var(--primary);border-radius:2px;transition:height .2s ease}
.pain-item:hover{transform:translateX(4px);background:var(--surface-2)}
.pain-item:hover::before{height:26px}
.pain-item svg{width:18px;height:18px;color:var(--ink-300);margin-left:auto;flex:0 0 18px}

/* ---------- 方案错位栅格 ---------- */
.plan-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;box-shadow:var(--shadow-1);transition:transform .2s ease,border-color .2s ease}
.card:hover{transform:translateY(-2px);border-color:rgba(75,63,214,.3)}
.plan-main{grid-column:span 7;display:flex;flex-direction:column;gap:18px}
.plan-main img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:14px;background:var(--surface-2)}
.plan-main h3{font-size:20px;font-weight:600;line-height:1.5}
.plan-main p{font-size:15px;color:var(--ink-500)}
.tick-list{display:flex;flex-direction:column;gap:10px}
.tick-list li{display:flex;gap:10px;font-size:15px;color:var(--ink-700);line-height:1.7}
.tick-list svg{width:18px;height:18px;flex:0 0 18px;margin-top:4px;color:var(--primary)}
.plan-side{grid-column:span 5;display:flex;flex-direction:column;gap:24px}
.narrow-card{display:flex;flex-direction:column;gap:12px}
.narrow-card .idx{font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.06em}
.narrow-card h3{font-size:18px;font-weight:600}
.narrow-card p{font-size:15px;color:var(--ink-500);line-height:1.75}

/* ---------- 深墨面板 ---------- */
.dark-panel{position:relative;overflow:hidden;background:var(--ink-900);color:#fff;border-radius:24px;padding:56px}
.dark-panel::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);background-size:22px 22px;pointer-events:none}
.dark-inner{position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:48px;align-items:center}
.dark-inner h2{font-size:clamp(22px,2.2vw,32px);line-height:1.3;font-weight:700;margin:14px 0 12px}
.dark-inner p{font-size:15px;color:rgba(255,255,255,.72)}
.dark-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.dark-stat .num{font-size:clamp(28px,2.6vw,38px);font-weight:800;color:var(--accent);line-height:1.1}
.dark-stat p{font-size:14px;color:rgba(255,255,255,.66);margin-top:6px}
.dark-foot{position:relative;margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:14px;color:rgba(255,255,255,.66)}
.dark-panel .link-arrow{color:#fff}

/* ---------- 分类入口 ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cat-card{display:flex;flex-direction:column;gap:14px}
.cat-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:14px;background:var(--surface-2)}
.cat-card h3{font-size:18px;font-weight:600}
.cat-card p{font-size:15px;color:var(--ink-500);line-height:1.75}

/* ---------- 最新信息 ---------- */
.info-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.post-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-1);transition:transform .2s ease,border-color .2s ease}
.post-card:hover{transform:translateY(-2px);border-color:rgba(75,63,214,.3)}
.post-main{grid-column:span 7;overflow:hidden;display:flex;flex-direction:column}
.post-main img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--surface-2)}
.post-main .body{padding:24px 28px 28px;display:flex;flex-direction:column;gap:12px}
.post-main h3{font-size:22px;line-height:1.45;font-weight:600}
.post-main h3 a{color:var(--ink-900)}
.post-main h3 a:hover{color:var(--primary)}
.post-main p{font-size:15px;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-side{grid-column:span 5;display:flex;flex-direction:column;gap:18px}
.post-row{display:flex;gap:16px;padding:16px;align-items:flex-start;flex:1}
.post-row img{width:72px;height:72px;flex:0 0 72px;border-radius:12px;object-fit:cover;background:var(--surface-2)}
.post-row .body{min-width:0;display:flex;flex-direction:column;gap:6px}
.post-row h3{font-size:16px;font-weight:600;line-height:1.5;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.post-row h3 a{color:var(--ink-900)}
.post-row h3 a:hover{color:var(--primary)}
.post-row p{font-size:13px;color:var(--ink-500);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-500);flex-wrap:wrap}
.meta .dot{width:3px;height:3px;border-radius:50%;background:var(--ink-300)}
.meta time{font-variant-numeric:tabular-nums}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;min-height:200px;text-align:center;border:1px dashed var(--line);border-radius:var(--r-lg);background:var(--surface);padding:32px}
.empty-state svg{width:30px;height:30px;color:var(--primary)}
.empty-state p{font-size:15px;color:var(--ink-500)}
.skeleton{background:var(--surface-2);border-radius:var(--r-lg);height:240px;border:1px solid var(--line)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:760px;margin:0 auto}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 4px;background:none;border:0;text-align:left;font-size:17px;font-weight:500;color:var(--ink-900);cursor:pointer;transition:color .2s ease}
.faq-q:hover{color:var(--primary)}
.faq-q .ico{width:22px;height:22px;flex:0 0 22px;position:relative;transition:transform .25s ease;color:var(--primary)}
.faq-q .ico::before,.faq-q .ico::after{content:"";position:absolute;background:currentColor;border-radius:2px}
.faq-q .ico::before{left:4px;right:4px;top:10px;height:2px}
.faq-q .ico::after{top:4px;bottom:4px;left:10px;width:2px;transition:opacity .25s ease}
.faq-item.is-open .faq-q .ico{transform:rotate(180deg)}
.faq-item.is-open .faq-q .ico::after{opacity:0}
.faq-a{display:none;padding:0 4px 24px;font-size:15px;color:var(--ink-500);line-height:1.85;max-width:64ch}
.faq-item.is-open .faq-a{display:block}

/* ---------- 隐私说明 ---------- */
.privacy-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:56px;align-items:start}
.privacy-grid h2{font-size:clamp(22px,2.2vw,32px);line-height:1.3;font-weight:700;margin:14px 0 12px}
.privacy-grid .lead{font-size:15px;color:var(--ink-500)}
.privacy-list{display:grid;grid-template-columns:1fr 1fr;gap:20px 28px}
.privacy-list li{display:flex;gap:10px;font-size:15px;color:var(--ink-700);line-height:1.7}
.privacy-list svg{width:18px;height:18px;flex:0 0 18px;margin-top:5px;color:var(--success)}
.privacy-note{grid-column:1/-1;margin-top:32px;padding-top:18px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-300)}

/* ---------- CTA 条 ---------- */
.cta-band{background:var(--ink-900);color:#fff;border-radius:24px;padding:44px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);background-size:20px 20px;pointer-events:none}
.cta-band h2{position:relative;font-size:clamp(20px,2vw,28px);font-weight:700;line-height:1.35}
.cta-band p{position:relative;font-size:15px;color:rgba(255,255,255,.72);margin-top:8px}
.cta-band .btn{position:relative}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:96px;background:var(--ink-900);color:#fff;position:relative;overflow:hidden}
.site-footer::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);background-size:24px 24px;pointer-events:none}
.footer-inner{position:relative;padding:64px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-grid h4{font-size:14px;font-weight:600;margin-bottom:18px;color:#fff}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;margin-bottom:16px}
.footer-brand:hover{color:#fff}
.footer-brand .brand-mark{background:rgba(255,255,255,.1)}
.footer-brand strong{font-size:16px;font-weight:700}
.footer-brand span{font-size:12px;letter-spacing:.08em;color:rgba(255,255,255,.6);display:block}
.footer-grid p{font-size:14px;color:rgba(255,255,255,.66);line-height:1.8}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-links a:hover{color:var(--accent)}
.footer-bottom{position:relative;margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.55)}
.footer-bottom .back-top{display:inline-flex;align-items:center;gap:8px;background:transparent;border:1px solid rgba(255,255,255,.2);color:#fff;border-radius:var(--r-pill);height:36px;padding:0 16px;font-size:13px;cursor:pointer;transition:background-color .2s ease,border-color .2s ease}
.footer-bottom .back-top:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.4)}
.footer-bottom svg{width:14px;height:14px}

/* ---------- 悬浮按钮 / 弹层 ---------- */
.float-btn{position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;background:var(--primary);color:#fff;border:0;display:grid;place-items:center;cursor:pointer;box-shadow:var(--shadow-1);z-index:90;transition:background-color .2s ease,transform .2s ease}
.float-btn:hover{background:var(--primary-600);transform:translateY(-2px)}
.float-btn svg{width:22px;height:22px}
.modal{position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;padding:24px}
.modal.is-open{display:flex}
.modal-mask{position:absolute;inset:0;background:rgba(11,11,18,.55)}
.modal-panel{position:relative;width:100%;max-width:520px;max-height:90vh;overflow:auto;background:var(--surface);border-radius:20px;padding:32px;box-shadow:var(--shadow-1)}
.modal-close{position:absolute;right:20px;top:20px;width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:transparent;display:grid;place-items:center;cursor:pointer;color:var(--ink-500);transition:background-color .2s ease,color .2s ease}
.modal-close:hover{background:var(--surface-2);color:var(--ink-900)}
.modal-close svg{width:18px;height:18px}
.modal-panel h3{font-size:22px;font-weight:700;margin-bottom:8px}
.modal-panel .sub{font-size:14px;color:var(--ink-500);margin-bottom:24px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;font-weight:500;color:var(--ink-700);margin-bottom:8px}
.field input,.field select,.field textarea{width:100%;height:48px;border:1px solid var(--line);border-radius:10px;background:var(--surface);padding:0 14px;transition:border-color .2s ease,box-shadow .2s ease}
.field textarea{height:auto;min-height:104px;padding:12px 14px;line-height:1.7;resize:vertical}
.field select{appearance:none;background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236E6E7A' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:40px}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-050)}
.field.is-error input,.field.is-error textarea{border-color:var(--danger)}
.field .err{display:none;font-size:13px;color:var(--danger);margin-top:6px}
.field.is-error .err{display:block}
.checkbox{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--ink-500);line-height:1.7}
.checkbox input{width:16px;height:16px;flex:0 0 16px;margin-top:5px;accent-color:var(--primary)}
.success-state{display:none;flex-direction:column;align-items:center;text-align:center;gap:14px;padding:24px 0}
.success-state.is-visible{display:flex}
.success-state svg{width:44px;height:44px;color:var(--success)}
.success-state p{font-size:15px;color:var(--ink-500)}

/* ---------- 抽屉 ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(11,11,18,.5);z-index:150;display:none}
.drawer-mask.is-open{display:block}
.drawer{position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:380px;background:var(--surface);border-left:1px solid var(--line);z-index:160;transform:translateX(100%);transition:transform .28s ease;display:flex;flex-direction:column}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line);height:56px}
.drawer-links{flex:1;overflow:auto}
.drawer-links a{display:flex;align-items:center;justify-content:space-between;height:52px;padding:0 20px;border-bottom:1px solid var(--line);font-size:15px;color:var(--ink-700)}
.drawer-links a:hover{background:var(--surface-2);color:var(--ink-900)}
.drawer-foot{padding:16px 20px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:12px}
.drawer-foot input{height:48px;border:1px solid var(--line);border-radius:10px;padding:0 14px;background:var(--surface)}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .nav-left{gap:24px}
  .nav-links{gap:20px}
}
@media (max-width:1024px){
  .section{padding:72px 0}
  .nav-wrap{grid-template-columns:1fr auto;height:56px}
  .nav-links{display:none}
  .nav-toggle{display:grid}
  .hero{padding:36px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-visual{order:5}
  .hero-visual img,.hero-fallback{aspect-ratio:auto;height:260px}
  .info-card{left:16px;bottom:16px}
  .pain-grid,.privacy-grid,.dark-inner{grid-template-columns:1fr;gap:32px}
  .plan-main,.plan-side{grid-column:span 12}
  .post-main,.post-side{grid-column:span 12}
  .cat-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section-head{grid-template-columns:1fr;gap:16px;align-items:start}
  .dark-panel,.cta-band{padding:36px}
}
@media (max-width:768px){
  body{font-size:15.5px}
  .section{padding:56px 0}
  .container{padding:0 16px}
  .stats-grid{grid-template-columns:1fr 1fr;gap:28px 0}
  .stat{padding:0 16px}
  .stat:nth-child(odd){border-left:0;padding-left:0}
  .stat:nth-child(3),.stat:nth-child(4){}
  .privacy-list{grid-template-columns:1fr}
  .cat-grid{grid-template-columns:1fr}
  .hero-cta .btn{width:100%}
  .hero-cta{flex-direction:column}
  .plan-grid{gap:16px}
  .card{padding:22px}
  .dark-stats{grid-template-columns:1fr 1fr}
  .modal{padding:0;align-items:flex-end}
  .modal-panel{max-width:none;border-radius:20px 20px 0 0;max-height:92vh;padding:26px 20px 32px}
  .float-btn{bottom:20px;right:16px}
  .footer-grid{grid-template-columns:1fr}
  .cta-band{padding:28px 22px}
  .cta-band .btn{width:100%}
}
@media (max-width:480px){
  .hero-title{font-size:26px}
  .hero-sub{font-size:16px}
  .info-card{width:calc(100% - 32px);left:16px}
  .dark-stats{grid-template-columns:1fr}
  .post-row img{width:60px;height:60px;flex:0 0 60px}
}

/* roulang page: article */
:root{
  --bg:#FAF8F5;
  --surface:#FFFFFF;
  --surface-2:#F2EFEA;
  --line:#E7E3DC;
  --ink-900:#0B0B12;
  --ink-700:#2C2C36;
  --ink-500:#6E6E7A;
  --ink-300:#A9A6A0;
  --primary:#4B3FD6;
  --primary-600:#3A2FBD;
  --primary-050:#EEECFB;
  --accent:#E8703A;
  --accent-050:#FDEDE4;
  --danger:#C0392B;
  --success:#1F8A5B;
  --r-xs:6px;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-xl:24px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(11,11,18,.04),0 10px 28px -18px rgba(11,11,18,.18);
  --sp-1:4px;
  --sp-2:8px;
  --sp-3:12px;
  --sp-4:16px;
  --sp-5:24px;
  --sp-6:32px;
  --sp-7:48px;
  --sp-8:64px;
  --header-h:64px;
  --font-cn:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--primary-600);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:-0.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
svg{display:block;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:10px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.btn svg{width:18px;height:18px;transition:transform .2s ease;}
.btn:hover svg{transform:translateX(2px);}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-600);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:transparent;border-color:var(--line);color:var(--ink-900);}
.btn-outline:hover{background:var(--surface-2);color:var(--ink-900);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);border-bottom:1px solid var(--primary);padding-bottom:2px;}
.link-arrow svg{width:16px;height:16px;transition:transform .2s ease;}
.link-arrow:hover svg{transform:translateX(2px);}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);background:var(--primary-050);color:var(--primary);font-size:12px;font-weight:500;letter-spacing:.02em;}
.badge-accent{background:var(--accent-050);color:var(--accent);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;background:transparent;
  transition:background-color .25s ease,border-color .25s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-stuck{background:rgba(250,248,245,.96);border-bottom-color:var(--line);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);gap:24px;}
.nav-left{display:flex;align-items:center;gap:44px;min-width:0;}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink-900);}
.brand:hover{color:var(--ink-900);}
.brand-mark{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:10px;background:var(--ink-900);color:#fff;flex:0 0 auto;}
.brand-mark svg{width:20px;height:20px;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:-.01em;}
.brand-text span{font-size:11px;letter-spacing:.08em;color:var(--ink-500);margin-top:2px;}
.nav-links{display:flex;align-items:center;gap:28px;}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-700);padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;background:var(--primary);
  transform:translateX(-50%);transition:width .25s ease;
}
.nav-links a:hover{color:var(--ink-900);}
.nav-links a:hover::after{width:100%;}
.nav-links a[aria-current="page"]{color:var(--ink-900);}
.nav-links a[aria-current="page"]::after{width:100%;}
.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;
  border-radius:50%;border:1px solid var(--line);background:var(--surface);color:var(--ink-700);
  cursor:pointer;transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.icon-btn svg{width:20px;height:20px;}
.icon-btn:hover{border-color:var(--primary);color:var(--primary);}
.icon-btn.is-open{background:var(--primary-050);border-color:var(--primary);color:var(--primary);}
.nav-toggle{display:none;}
.search-bar{display:none;border-top:1px solid var(--line);background:var(--surface);}
.search-bar.is-open{display:block;}
.search-bar form{display:flex;gap:12px;padding:16px 0;}
.search-bar input{
  flex:1;height:48px;padding:0 16px;border-radius:10px;border:1px solid var(--line);background:var(--bg);
}
.search-bar input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-050);outline:none;}
.nav-mask{position:fixed;inset:0;background:rgba(11,11,18,.5);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:98;}
.nav-mask.is-open{opacity:1;visibility:visible;}

/* ---------- 文章头 ---------- */
.article-hero{
  position:relative;background-color:var(--ink-900);color:#fff;overflow:hidden;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
}
.article-hero::before{content:"";position:absolute;inset:0;background:rgba(11,11,18,.86);}
.article-hero::after{
  content:"";position:absolute;inset:0;opacity:.07;
  background-image:radial-gradient(#fff 1px,transparent 1px);
  background-size:26px 26px;
}
.article-hero .container{position:relative;z-index:2;padding-top:56px;padding-bottom:56px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.62);}
.breadcrumb a{color:rgba(255,255,255,.62);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .sep{color:rgba(255,255,255,.35);}
.breadcrumb .current{color:rgba(255,255,255,.9);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.hero-badges .badge{background:rgba(255,255,255,.12);color:#fff;}
.article-hero h1{
  margin-top:18px;color:#fff;font-size:clamp(26px,3.4vw,42px);line-height:1.32;font-weight:800;
  max-width:900px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:22px;font-size:13px;color:rgba(255,255,255,.66);}
.article-meta .dot{color:rgba(255,255,255,.3);}

/* ---------- 布局 ---------- */
.article-main{padding:64px 0 80px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:56px;align-items:start;}
.article-column{max-width:720px;min-width:0;}

/* ---------- 正文排版 ---------- */
.article-body{font-size:16.5px;line-height:1.9;color:var(--ink-700);}
.article-body > * + *{margin-top:22px;}
.article-body p{font-size:16.5px;line-height:1.9;}
.article-body h2{
  position:relative;margin-top:48px;padding-left:14px;font-size:24px;line-height:1.4;color:var(--ink-900);
}
.article-body h2::before{content:"";position:absolute;left:0;top:.42em;width:3px;height:18px;background:var(--primary);border-radius:2px;}
.article-body h3{margin-top:34px;font-size:20px;line-height:1.5;color:var(--ink-900);}
.article-body h4{margin-top:26px;font-size:17px;color:var(--ink-900);}
.article-body ul,.article-body ol{padding-left:22px;}
.article-body ul{list-style:none;padding-left:0;}
.article-body ul li{position:relative;padding-left:20px;margin-top:10px;}
.article-body ul li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;background:var(--primary);border-radius:1px;}
.article-body ol{counter-reset:li;list-style:none;}
.article-body ol li{position:relative;padding-left:26px;margin-top:10px;counter-increment:li;}
.article-body ol li::before{content:counter(li);position:absolute;left:0;top:.35em;font-size:12px;font-weight:700;color:var(--primary);}
.article-body blockquote{
  margin:28px 0;padding:20px 22px;background:var(--surface-2);border-left:3px solid var(--primary);
  border-radius:0 var(--r-md) var(--r-md) 0;color:var(--ink-700);font-size:15.5px;
}
.article-body img{border-radius:14px;margin:28px 0;}
.article-body figure{margin:28px 0;}
.article-body figcaption{margin-top:10px;font-size:13px;color:var(--ink-500);text-align:center;}
.article-body table{width:100%;border-collapse:collapse;margin:28px 0;font-size:14.5px;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;text-align:left;}
.article-body th{background:var(--surface-2);font-weight:600;color:var(--ink-900);}
.article-body a{border-bottom:1px solid var(--primary);padding-bottom:1px;}
.article-body code{background:var(--surface-2);padding:2px 6px;border-radius:4px;font-size:14px;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0;}
.article-body .divider{border-top:1px solid var(--line);margin:36px 0;}

/* ---------- 侧栏 ---------- */
.side{display:flex;flex-direction:column;gap:28px;position:sticky;top:88px;}
.side-block{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;box-shadow:var(--shadow-1);}
.side-block h3{font-size:14px;font-weight:600;letter-spacing:.04em;color:var(--ink-900);display:flex;align-items:center;gap:8px;}
.side-block h3::before{content:"";width:3px;height:14px;background:var(--primary);border-radius:2px;}
.toc-list{margin-top:16px;display:flex;flex-direction:column;}
.toc-list a{display:block;padding:9px 0 9px 12px;font-size:14px;color:var(--ink-500);border-left:2px solid var(--line);line-height:1.6;}
.toc-list a:hover{color:var(--ink-900);border-left-color:var(--ink-300);}
.toc-list a.is-active{color:var(--primary);border-left-color:var(--primary);font-weight:600;}
.mini-list{margin-top:16px;display:flex;flex-direction:column;}
.mini-item{display:flex;gap:12px;padding:14px 0;border-bottom:1px solid var(--line);}
.mini-item:last-child{border-bottom:0;padding-bottom:0;}
.mini-item img{width:72px;height:72px;border-radius:12px;object-fit:cover;flex:0 0 auto;background:var(--surface-2);}
.mini-item h4{font-size:15px;font-weight:600;line-height:1.5;color:var(--ink-900);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.mini-item h4 a{color:var(--ink-900);}
.mini-item h4 a:hover{color:var(--primary);}
.mini-item p{margin-top:6px;font-size:12.5px;line-height:1.6;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;}
.toc-toggle{display:none;}

/* ---------- 文末 ---------- */
.article-foot{margin-top:48px;padding-top:28px;border-top:1px solid var(--line);}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
.tag-row .label{font-size:13px;color:var(--ink-500);}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px;}
.pager-item{
  display:block;padding:18px 20px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  transition:transform .2s ease,border-color .2s ease;
}
.pager-item:hover{transform:translateY(-2px);border-color:rgba(75,63,214,.3);}
.pager-item .k{font-size:12px;color:var(--ink-500);}
.pager-item .v{margin-top:8px;font-size:15px;font-weight:600;color:var(--ink-900);line-height:1.5;}
.pager-item.is-empty .v{color:var(--ink-300);font-weight:500;}
.back-row{margin-top:28px;display:flex;justify-content:center;}

/* ---------- 移动端相关推荐 ---------- */
.related-mobile{display:none;margin-top:48px;}
.related-mobile h2{font-size:20px;margin-bottom:18px;}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--shadow-1);transition:transform .2s ease,border-color .2s ease;
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-2px);border-color:rgba(75,63,214,.3);}
.card img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--surface-2);}
.card-body{padding:20px;}
.card h3{font-size:17px;line-height:1.55;}
.card h3 a{color:var(--ink-900);}
.card h3 a:hover{color:var(--primary);}
.card p{margin-top:10px;font-size:14px;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* ---------- 空态 ---------- */
.empty-block{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
  min-height:320px;padding:48px 24px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);text-align:center;
}
.empty-block svg{width:40px;height:40px;color:var(--primary);}
.empty-block h2{font-size:20px;}
.empty-block p{font-size:15px;color:var(--ink-500);max-width:420px;}

/* ---------- CTA 面板 ---------- */
.cta-panel{
  position:relative;overflow:hidden;background:var(--ink-900);border-radius:var(--r-xl);
  padding:48px;margin-top:80px;color:#fff;
  display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:center;
}
.cta-panel::after{
  content:"";position:absolute;inset:0;opacity:.06;pointer-events:none;
  background-image:radial-gradient(#fff 1px,transparent 1px);background-size:24px 24px;
}
.cta-panel > *{position:relative;z-index:2;}
.cta-panel h2{color:#fff;font-size:clamp(20px,2vw,28px);line-height:1.4;}
.cta-panel p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.72);max-width:520px;}
.cta-actions{display:flex;justify-content:flex-end;gap:14px;flex-wrap:wrap;}
.cta-actions .btn-outline{border-color:rgba(255,255,255,.28);color:#fff;}
.cta-actions .btn-outline:hover{background:rgba(255,255,255,.08);color:#fff;}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;overflow:hidden;background:var(--ink-900);color:rgba(255,255,255,.72);margin-top:96px;}
.site-footer::after{
  content:"";position:absolute;inset:0;opacity:.05;pointer-events:none;
  background-image:radial-gradient(#fff 1px,transparent 1px);background-size:28px 28px;
}
.footer-inner{position:relative;z-index:2;padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;}
.footer-brand:hover{color:#fff;}
.footer-brand .brand-mark{background:rgba(255,255,255,.1);}
.footer-brand strong{display:block;font-size:16px;}
.footer-brand span span{display:block;font-size:11px;letter-spacing:.08em;color:rgba(255,255,255,.6);margin-top:2px;}
.footer-grid p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);}
.footer-grid h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-links a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}
.back-top{
  display:inline-flex;align-items:center;gap:8px;background:transparent;border:1px solid rgba(255,255,255,.2);
  color:rgba(255,255,255,.82);height:36px;padding:0 14px;border-radius:var(--r-pill);cursor:pointer;font-size:13px;
  transition:border-color .2s ease,color .2s ease;
}
.back-top svg{width:16px;height:16px;}
.back-top:hover{border-color:var(--accent);color:var(--accent);}

/* ---------- 悬浮按钮 ---------- */
.float-btn{
  position:fixed;right:28px;bottom:28px;z-index:90;width:48px;height:48px;border-radius:50%;
  background:var(--primary);color:#fff;border:0;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-1);transition:background-color .2s ease,transform .2s ease;
}
.float-btn svg{width:22px;height:22px;}
.float-btn:hover{background:var(--primary-600);transform:translateY(-2px);}

/* ---------- 弹层 ---------- */
.modal{position:fixed;inset:0;z-index:200;display:none;}
.modal.is-open{display:block;}
.modal-mask{position:absolute;inset:0;background:rgba(11,11,18,.55);}
.modal-panel{
  position:relative;width:min(540px,calc(100% - 32px));margin:6vh auto;background:var(--surface);
  border-radius:20px;padding:32px;box-shadow:var(--shadow-1);max-height:88vh;overflow-y:auto;
}
.modal-close{
  position:absolute;right:16px;top:16px;width:40px;height:40px;border-radius:50%;border:1px solid var(--line);
  background:var(--surface);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;color:var(--ink-500);
}
.modal-close:hover{border-color:var(--primary);color:var(--primary);}
.modal-close svg{width:18px;height:18px;}
.modal h3{font-size:22px;}
.modal-sub{margin-top:10px;font-size:14px;color:var(--ink-500);}
.form-grid{margin-top:24px;display:grid;gap:18px;}
.field label{display:block;font-size:13px;font-weight:500;color:var(--ink-900);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:10px;background:var(--bg);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:auto;padding:12px 14px;resize:vertical;line-height:1.7;}
.field select{
  appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236E6E7A' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;background-size:18px;padding-right:42px;
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-050);outline:none;}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--danger);}
.field .err{display:none;margin-top:6px;font-size:12.5px;color:var(--danger);}
.field.has-error .err{display:block;}
.check{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--ink-500);line-height:1.7;}
.check input{width:18px;height:18px;margin-top:3px;accent-color:var(--primary);flex:0 0 auto;}
.modal-success{display:none;flex-direction:column;align-items:center;text-align:center;gap:14px;padding:24px 0;}
.modal-success.is-open{display:flex;}
.modal-success svg{width:46px;height:46px;color:var(--success);}
.modal-success p{font-size:15px;color:var(--ink-500);}

@media (max-width:1024px){
  .nav-links{
    position:fixed;top:0;right:0;height:100vh;width:84vw;max-width:380px;background:var(--surface);
    border-left:1px solid var(--line);flex-direction:column;align-items:stretch;gap:0;
    padding:76px 24px 24px;transform:translateX(100%);transition:transform .28s ease;z-index:99;
    overflow-y:auto;
  }
  .nav-links.is-open{transform:translateX(0);}
  .nav-links a{padding:0;height:52px;display:flex;align-items:center;border-bottom:1px solid var(--line);font-size:15.5px;}
  .nav-links a::after{display:none;}
  .nav-toggle{display:inline-flex;}
  .article-layout{grid-template-columns:1fr;gap:40px;}
  .side{position:static;order:-1;}
  .toc-block{display:none;}
  .toc-toggle{display:block;}
  .toc-mobile{display:none;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:18px 20px;}
  .toc-mobile.is-open{display:block;}
  .related-mobile{display:block;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .container{padding:0 16px;}
  :root{--header-h:56px;}
  .article-hero .container{padding-top:40px;padding-bottom:40px;}
  .article-main{padding:48px 0 64px;}
  .article-column{max-width:100%;}
  .cta-panel{grid-template-columns:1fr;padding:32px 24px;margin-top:56px;}
  .cta-actions{justify-content:flex-start;}
  .pager{grid-template-columns:1fr;}
  .card-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-inner{padding:48px 0 24px;}
  .float-btn{right:16px;bottom:16px;}
  .modal-panel{width:100%;margin:0;border-radius:20px 20px 0 0;position:absolute;bottom:0;top:auto;max-height:92vh;}
  .article-body h2{font-size:21px;}
  .article-body h3{font-size:18px;}
}
@media (max-width:520px){
  .hero-badges{margin-top:20px;}
  .article-meta{font-size:12.5px;}
  .cta-actions .btn{width:100%;}
  .search-bar form{flex-direction:column;}
  .search-bar form .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --bg:#FAF8F5;
  --surface:#FFFFFF;
  --surface-2:#F2EFEA;
  --line:#E7E3DC;
  --ink-900:#0B0B12;
  --ink-700:#2C2C36;
  --ink-500:#6E6E7A;
  --ink-300:#A9A6A0;
  --primary:#4B3FD6;
  --primary-600:#3A2FBD;
  --primary-050:#EEECFB;
  --accent:#E8703A;
  --accent-050:#FDEDE4;
  --danger:#C0392B;
  --success:#1F8A5B;
  --r-xs:6px;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(11,11,18,.04), 0 10px 28px -18px rgba(11,11,18,.18);
  --sp-1:4px;
  --sp-2:8px;
  --sp-3:12px;
  --sp-4:16px;
  --sp-5:24px;
  --sp-6:32px;
  --sp-7:48px;
  --sp-8:64px;
  --header-h:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-900);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--ink-900)}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.num{font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:var(--bg);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{background:rgba(250,248,245,.96);border-bottom-color:var(--line)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);gap:24px}
.nav-left{display:flex;align-items:center;gap:40px;min-width:0}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:var(--ink-900);color:#fff;flex-shrink:0;
}
.brand-mark svg{width:20px;height:20px}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.01em}
.brand-text span{font-size:12px;letter-spacing:.08em;color:var(--ink-500);margin-top:2px}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-700);
  padding:6px 0;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;
  background:var(--primary);transform:translateX(-50%);
  transition:width .22s ease;
}
.nav-links a:hover{color:var(--primary)}
.nav-links a:hover::after{width:100%}
.nav-links a[aria-current="page"]{color:var(--primary)}
.nav-links a[aria-current="page"]::after{width:100%}
.nav-right{display:flex;align-items:center;gap:12px;flex-shrink:0}
.icon-btn{
  width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);background:var(--surface);color:var(--ink-700);
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.icon-btn svg{width:20px;height:20px}
.icon-btn:hover{border-color:var(--primary);color:var(--primary)}
.icon-btn:active{transform:translateY(1px)}
.nav-toggle{display:none}
.search-bar{
  overflow:hidden;max-height:0;
  border-top:1px solid transparent;
  transition:max-height .28s ease,border-color .28s ease;
}
.search-bar.is-open{max-height:120px;border-top-color:var(--line)}
.search-bar form{display:flex;gap:12px;padding:14px 0}
.search-bar input{
  flex:1;height:46px;border-radius:10px;border:1px solid var(--line);
  background:var(--surface);padding:0 16px;
}
.search-bar input:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 3px var(--primary-050)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:10px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .18s ease;
}
.btn svg{width:16px;height:16px;transition:transform .18s ease}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-600);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-primary:hover svg{transform:translateX(2px)}
.btn-outline{background:transparent;border-color:var(--line);color:var(--ink-900)}
.btn-outline:hover{background:var(--surface-2);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary);font-size:15px;font-weight:500;
  border-bottom:1px solid var(--primary);padding-bottom:2px;
  transition:border-color .2s ease,color .2s ease;
}
.link-arrow svg{width:15px;height:15px;transition:transform .2s ease}
.link-arrow:hover{color:var(--primary-600);border-color:var(--primary-600)}
.link-arrow:hover svg{transform:translateX(2px)}

/* ---------- badges & tags ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  background:var(--primary-050);color:var(--primary);font-size:12px;font-weight:500;
}
.badge-accent{background:var(--accent-050);color:var(--accent)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:500;color:var(--primary);
}
.eyebrow::before{content:"";width:3px;height:14px;background:var(--primary);border-radius:2px}

/* ---------- page head ---------- */
.page-head{
  position:relative;
  padding:44px 0 40px;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(rgba(250,248,245,.94),rgba(250,248,245,.99)),url(/assets/images/backpic/back-3.webp);
  background-size:cover;background-position:center;
}
.breadcrumb{margin-bottom:22px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-500)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--ink-300)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb [aria-current="page"]{color:var(--ink-700)}
.page-head h1{
  font-size:clamp(28px,3.4vw,44px);line-height:1.25;font-weight:700;
  letter-spacing:-.01em;max-width:900px;
}
.page-lead{max-width:720px;margin-top:16px;font-size:17px;color:var(--ink-500);line-height:1.8}
.head-points{
  display:flex;flex-wrap:wrap;gap:12px 28px;margin-top:26px;
  font-size:13px;color:var(--ink-500);
}
.head-points li{display:flex;align-items:center;gap:8px}
.head-points svg{width:15px;height:15px;color:var(--success)}

/* ---------- sections ---------- */
.section{padding:96px 0}
.section+.section{border-top:1px solid var(--line)}
.section-alt{background:var(--surface)}
.sec-head{
  display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);
  gap:32px;align-items:end;margin-bottom:48px;
}
.sec-head h2{
  display:flex;align-items:baseline;gap:14px;
  font-size:clamp(22px,2.2vw,32px);line-height:1.3;font-weight:700;
}
.sec-num{
  font-size:15px;font-weight:600;color:var(--accent);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.sec-head p{font-size:15px;color:var(--ink-500);max-width:420px}
.sec-head .sec-side{display:flex;flex-direction:column;gap:12px;align-items:flex-start}

/* ---------- Z rows ---------- */
.zlist{display:flex;flex-direction:column}
.zrow{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:48px 0;
}
.zrow+.zrow{border-top:1px solid var(--line)}
.zrow:nth-child(even) .z-media{order:2}
.zrow:nth-child(even) .z-body{order:1}
.media-frame{
  border-radius:var(--r-lg);overflow:hidden;background:var(--surface-2);
  border:1px solid var(--line);
}
.media-frame img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform .5s ease}
.media-frame:hover img{transform:scale(1.03)}
.z-body .z-index{
  display:block;font-size:13px;font-weight:600;color:var(--accent);
  font-variant-numeric:tabular-nums;letter-spacing:.06em;margin-bottom:12px;
}
.z-body h3{font-size:22px;line-height:1.45;font-weight:700;margin-bottom:14px}
.z-body>p{font-size:15px;color:var(--ink-500);margin-bottom:18px}
.bullets li{
  display:flex;gap:12px;padding:10px 0;font-size:15px;color:var(--ink-700);
  border-bottom:1px solid var(--line);
}
.bullets li:last-child{border-bottom:0}
.bullets svg{width:18px;height:18px;flex-shrink:0;margin-top:5px;color:var(--primary)}

/* ---------- compare table ---------- */
.table-wrap{
  overflow-x:auto;border:1px solid var(--line);border-radius:14px;background:var(--surface);
}
.cmp-table{width:100%;min-width:640px;border-collapse:collapse}
.cmp-table th{
  height:52px;padding:0 20px;text-align:left;font-size:14px;font-weight:600;
  background:var(--surface);border-bottom:1px solid var(--line);white-space:nowrap;
}
.cmp-table th:first-child{color:var(--primary)}
.cmp-table th:last-child{color:var(--ink-500)}
.cmp-table td{
  height:52px;padding:0 20px;font-size:14.5px;color:var(--ink-700);
  border-top:1px solid var(--line);vertical-align:middle;
}
.cmp-table tbody tr:nth-child(even){background:var(--surface-2)}
.cmp-table tbody tr:hover{background:var(--primary-050)}
.table-note{margin-top:14px;font-size:13px;color:var(--ink-300)}

/* ---------- habit list ---------- */
.habit-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.habit{
  padding:8px 24px;border-left:1px solid var(--line);
}
.habit:first-child{border-left:0;padding-left:0}
.habit .habit-num{
  display:block;font-size:13px;font-weight:600;color:var(--primary);
  font-variant-numeric:tabular-nums;letter-spacing:.06em;margin-bottom:10px;
}
.habit h3{font-size:17px;font-weight:600;margin-bottom:8px}
.habit p{font-size:14px;color:var(--ink-500)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:760px;margin:0 auto}
.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:22px 0;background:none;border:0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:500;color:var(--ink-900);line-height:1.6;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--primary)}
.faq-icon{
  flex-shrink:0;width:24px;height:24px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  color:var(--primary);transition:transform .25s ease;
}
.faq-icon svg{width:18px;height:18px}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .3s ease;
}
.faq-a p{
  padding:0 0 22px;font-size:15px;color:var(--ink-500);max-width:660px;
}
.faq-item.is-open .faq-a{max-height:320px}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:24px;
  background:var(--ink-900);color:#fff;padding:64px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.08) 1px,transparent 1px);
  background-size:22px 22px;pointer-events:none;
}
.cta-inner{position:relative;display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center}
.cta-band h2{font-size:clamp(22px,2.2vw,30px);line-height:1.35;font-weight:700;color:#fff}
.cta-band p{margin-top:14px;font-size:15px;color:rgba(255,255,255,.7);max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.28);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.08)}
.cta-foot{
  position:relative;margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- secondary cta block ---------- */
.help-card{
  max-width:760px;margin:0 auto;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:32px;box-shadow:var(--shadow-1);
  display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between;
}
.help-card h3{font-size:18px;font-weight:600;margin-bottom:6px}
.help-card p{font-size:14px;color:var(--ink-500);max-width:420px}
.back-home{display:flex;justify-content:center;margin-top:32px;font-size:14px}

/* ---------- footer ---------- */
.site-footer{
  position:relative;margin-top:0;background:var(--ink-900);color:rgba(255,255,255,.72);
  padding:64px 0 0;overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:24px 24px;pointer-events:none;
}
.footer-inner{position:relative}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.1)}
.footer-brand strong{display:block;font-size:16px;font-weight:700}
.footer-brand span span,
.footer-brand>span>span{font-size:12px;letter-spacing:.08em;color:rgba(255,255,255,.55)}
.site-footer h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);max-width:340px}
.footer-links a{display:block;padding:6px 0;font-size:14px;color:rgba(255,255,255,.72)}
.footer-links a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}
.back-top{
  display:inline-flex;align-items:center;gap:8px;height:36px;padding:0 14px;
  border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.22);
  background:transparent;color:#fff;font-size:13px;cursor:pointer;
  transition:background .2s ease,border-color .2s ease;
}
.back-top svg{width:15px;height:15px}
.back-top:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.4)}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,11,18,.5);z-index:200;
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:380px;z-index:210;
  background:var(--surface);border-left:1px solid var(--line);
  transform:translateX(101%);transition:transform .3s ease;
  display:flex;flex-direction:column;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;padding:0 20px;border-bottom:1px solid var(--line);
}
.drawer-head strong{font-size:15px}
.drawer-body{flex:1;overflow-y:auto;padding:8px 20px}
.drawer-body a{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;border-bottom:1px solid var(--line);font-size:15px;color:var(--ink-700);
}
.drawer-body a:hover{color:var(--primary)}
.drawer-body a[aria-current="page"]{color:var(--primary);font-weight:600}
.drawer-foot{padding:20px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:12px}
.drawer-foot .btn{width:100%}
.drawer-foot input{
  height:46px;border-radius:10px;border:1px solid var(--line);padding:0 14px;width:100%;
  background:var(--surface);
}
.drawer-foot input:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 3px var(--primary-050)}

/* ---------- modal ---------- */
.modal{
  position:fixed;inset:0;z-index:300;display:none;
  align-items:center;justify-content:center;padding:24px;
}
.modal.is-open{display:flex}
.modal-mask{position:absolute;inset:0;background:rgba(11,11,18,.55)}
.modal-panel{
  position:relative;width:100%;max-width:540px;background:var(--surface);
  border-radius:20px;padding:32px;box-shadow:var(--shadow-1);
  max-height:calc(100vh - 48px);overflow-y:auto;
}
.modal-close{
  position:absolute;top:18px;right:18px;width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);background:var(--surface);color:var(--ink-700);
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  transition:border-color .2s ease,color .2s ease;
}
.modal-close:hover{border-color:var(--primary);color:var(--primary)}
.modal-close svg{width:18px;height:18px}
.modal-panel h3{font-size:20px;font-weight:700;margin-bottom:8px}
.modal-panel .modal-sub{font-size:14px;color:var(--ink-500);margin-bottom:24px}
.form-field{margin-bottom:18px}
.form-field label{display:block;font-size:13px;font-weight:500;color:var(--ink-700);margin-bottom:8px}
.form-field input,.form-field select,.form-field textarea{
  width:100%;height:48px;border-radius:10px;border:1px solid var(--line);
  background:var(--surface);padding:0 14px;transition:border-color .2s ease,box-shadow .2s ease;
}
.form-field textarea{height:auto;min-height:104px;padding:12px 14px;resize:vertical;line-height:1.7}
.form-field select{
  appearance:none;-webkit-appearance:none;padding-right:40px;cursor:pointer;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236E6E7A' stroke-width='1.5' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;background-size:18px 18px;
}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-050);
}
.form-field.has-error input,.form-field.has-error select,.form-field.has-error textarea{
  border-color:var(--danger);
}
.form-error{display:none;margin-top:6px;font-size:12.5px;color:var(--danger)}
.form-field.has-error .form-error{display:block}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--ink-500);line-height:1.7}
.check-row input{width:16px;height:16px;margin-top:4px;accent-color:var(--primary);flex-shrink:0}
.form-submit{width:100%;margin-top:22px}
.form-success{text-align:center;padding:24px 0}
.form-success .ok-icon{
  width:56px;height:56px;border-radius:50%;background:var(--primary-050);color:var(--primary);
  display:flex;align-items:center;justify-content:center;margin:0 auto 18px;
}
.form-success .ok-icon svg{width:28px;height:28px}
.form-success h3{margin-bottom:10px}
.form-success p{font-size:14px;color:var(--ink-500);margin-bottom:22px}

/* ---------- float cta ---------- */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:150;
  width:48px;height:48px;border-radius:50%;border:0;cursor:pointer;
  background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-1);transition:background .2s ease,transform .2s ease;
}
.float-cta svg{width:22px;height:22px}
.float-cta:hover{background:var(--primary-600);transform:translateY(-2px)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1280px){
  .nav-left{gap:28px}
  .nav-links{gap:22px}
}
@media (max-width:1024px){
  :root{--header-h:56px}
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .container{padding:0 20px}
  .section{padding:72px 0}
  .sec-head{grid-template-columns:1fr;gap:16px;align-items:start;margin-bottom:36px}
  .zrow{gap:36px;padding:40px 0}
  .habit-grid{grid-template-columns:repeat(2,1fr);gap:28px 0}
  .habit:nth-child(3){border-left:0;padding-left:0}
  .cta-band{padding:48px}
  .cta-inner{grid-template-columns:1fr}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .page-head{padding:32px 0 32px}
  .page-lead{font-size:15.5px}
  .zrow{grid-template-columns:1fr;gap:22px;padding:32px 0}
  .zrow:nth-child(even) .z-media{order:0}
  .zrow:nth-child(even) .z-body{order:0}
  .z-body h3{font-size:19px}
  .habit-grid{grid-template-columns:1fr;gap:0}
  .habit{border-left:0;padding:18px 0;border-bottom:1px solid var(--line)}
  .habit:last-child{border-bottom:0}
  .help-card{padding:24px}
  .cta-band{padding:32px;border-radius:18px}
  .modal{padding:0;align-items:flex-end}
  .modal-panel{max-width:100%;border-radius:20px 20px 0 0;max-height:92vh;padding:26px 20px 32px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .float-cta{right:16px;bottom:16px}
}
@media (max-width:520px){
  .nav-right .btn-sm{display:none}
  .sec-head h2{font-size:21px;gap:10px}
  .cmp-table th,.cmp-table td{padding:0 14px;font-size:13.5px}
  .head-points{gap:10px 20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --bg:#FAF8F5;
  --surface:#FFFFFF;
  --surface-2:#F2EFEA;
  --line:#E7E3DC;
  --ink-900:#0B0B12;
  --ink-700:#2C2C36;
  --ink-500:#6E6E7A;
  --ink-300:#A9A6A0;
  --primary:#4B3FD6;
  --primary-600:#3A2FBD;
  --primary-050:#EEECFB;
  --accent:#E8703A;
  --accent-050:#FDEDE4;
  --danger:#C0392B;
  --success:#1F8A5B;
  --r-xs:6px;--r-sm:8px;--r-md:12px;--r-lg:18px;--r-pill:999px;
  --shadow-1:0 1px 2px rgba(11,11,18,.04),0 10px 28px -18px rgba(11,11,18,.18);
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;
  --header-h:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-700);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border-radius:var(--r-lg)}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary-600)}
button{font-family:inherit;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--ink-900)}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:var(--r-xs)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section + .section{border-top:1px solid var(--line)}
.dim{color:var(--ink-500)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:10px;border:1px solid transparent;
  font-size:15px;font-weight:500;line-height:1;
  transition:background-color .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
  white-space:nowrap;
}
.btn svg{width:16px;height:16px;transition:transform .22s ease}
.btn:hover svg{transform:translateX(2px)}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-600);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:transparent;border-color:var(--line);color:var(--ink-900)}
.btn-outline:hover{background:var(--surface-2);color:var(--ink-900)}
.btn-light{background:transparent;border-color:rgba(255,255,255,.3);color:#fff}
.btn-light:hover{background:rgba(255,255,255,.1);color:#fff}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px}
.btn:disabled{opacity:.5;cursor:not-allowed}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;
  color:var(--primary);border-bottom:1px solid var(--primary);padding-bottom:2px;line-height:1.5;
}
.text-link svg{width:14px;height:14px;transition:transform .22s ease}
.text-link:hover svg{transform:translateX(2px)}

/* ============ 徽章 / 标签 ============ */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:500;padding:4px 10px;border-radius:var(--r-pill);background:var(--primary-050);color:var(--primary);letter-spacing:.02em}
.badge-accent{background:var(--accent-050);color:var(--accent)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:500;color:var(--primary);letter-spacing:.02em}
.eyebrow::before{content:"";width:3px;height:14px;background:var(--primary);border-radius:2px}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:100;background:transparent;
  transition:background-color .25s ease,box-shadow .25s ease,border-color .25s ease;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{background:rgba(250,248,245,.96);border-bottom-color:var(--line)}
.nav-wrap{
  display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:24px;
  height:var(--header-h);
}
.nav-left{display:flex;align-items:center;gap:36px;min-width:0}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink-900)}
.brand:hover{color:var(--ink-900)}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;background:var(--ink-900);color:#fff;flex:none}
.brand-mark svg{width:20px;height:20px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:-.01em}
.brand-text span{font-size:12px;letter-spacing:.08em;color:var(--ink-500)}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-700);padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;background:var(--primary);
  transition:left .22s ease,right .22s ease;
}
.nav-links a:hover{color:var(--primary)}
.nav-links a:hover::after{left:0;right:0}
.nav-links a[aria-current="page"]{color:var(--primary)}
.nav-links a[aria-current="page"]::after{left:0;right:0}
.nav-right{display:flex;align-items:center;gap:12px}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;
  border-radius:50%;border:1px solid var(--line);background:var(--surface);color:var(--ink-700);
  transition:background-color .2s ease,border-color .2s ease,color .2s ease;
}
.icon-btn:hover{background:var(--surface-2);border-color:var(--ink-300);color:var(--ink-900)}
.icon-btn svg{width:20px;height:20px}
.nav-toggle{display:none}
.search-bar{
  max-height:0;overflow:hidden;background:var(--surface);border-bottom:1px solid transparent;
  transition:max-height .28s ease,border-color .28s ease;
}
.search-bar.open{max-height:120px;border-bottom-color:var(--line)}
.search-bar form{display:flex;gap:12px;padding:16px 0}
.search-bar input{
  flex:1;height:48px;padding:0 16px;border:1px solid var(--line);border-radius:10px;background:var(--bg);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-bar input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-050)}

/* ============ 抽屉 ============ */
.drawer-mask{position:fixed;inset:0;background:rgba(11,11,18,.5);z-index:190;opacity:0;pointer-events:none;transition:opacity .25s ease}
.drawer-mask.open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:84vw;max-width:380px;background:var(--surface);
  border-left:1px solid var(--line);z-index:200;transform:translateX(102%);
  transition:transform .3s ease;display:flex;flex-direction:column;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-bottom:1px solid var(--line)}
.drawer-head strong{font-size:15px}
.drawer-links{flex:1;overflow:auto;padding:8px 0}
.drawer-links a{display:flex;align-items:center;height:52px;padding:0 20px;font-size:15px;color:var(--ink-700);border-bottom:1px solid var(--line)}
.drawer-links a[aria-current="page"]{color:var(--primary);font-weight:600}
.drawer-foot{padding:16px 20px calc(16px + env(safe-area-inset-bottom));border-top:1px solid var(--line);display:grid;gap:12px}
.drawer-foot input{height:48px;padding:0 16px;border:1px solid var(--line);border-radius:10px;background:var(--bg)}

/* ============ 面包屑 ============ */
.breadcrumb{padding-top:36px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-500)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li + li::before{content:"/";color:var(--ink-300)}
.breadcrumb a{color:var(--ink-500)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb [aria-current="page"]{color:var(--ink-900)}

/* ============ 页头 ============ */
.page-hero{padding-bottom:72px}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:56px;align-items:center;margin-top:28px}
.hero-copy h1{
  font-size:clamp(28px,3.4vw,44px);line-height:1.22;font-weight:700;color:var(--ink-900);
  letter-spacing:-.01em;margin:14px 0 18px;max-width:16em;
}
.lede{font-size:18px;color:var(--ink-500);max-width:34em}
.hero-points{display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:26px;font-size:13px;color:var(--ink-500)}
.hero-points li{display:flex;align-items:center;gap:8px}
.hero-points li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent)}
.hero-media{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:var(--surface-2)}
.hero-media img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0}
.hero-media figcaption{
  position:absolute;left:16px;right:16px;bottom:16px;background:var(--ink-900);color:#fff;
  border-radius:var(--r-md);padding:12px 14px;font-size:13px;line-height:1.6;display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.hero-media figcaption svg{width:16px;height:16px;flex:none;color:var(--accent)}

/* ============ 目录式主体 ============ */
.cat-layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:56px;align-items:start}
.toc{position:sticky;top:88px}
.toc-title{font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--ink-500);padding-bottom:12px;border-bottom:1px solid var(--line)}
.toc ol{margin-top:6px}
.toc li a{
  display:flex;align-items:center;gap:12px;padding:14px 0 14px 12px;font-size:14px;color:var(--ink-700);
  border-bottom:1px solid var(--line);position:relative;transition:color .2s ease,padding-left .2s ease;
}
.toc li a .num{font-size:12px;font-weight:600;color:var(--ink-300);letter-spacing:.06em}
.toc li a::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:2px;background:transparent;border-radius:2px;transition:background-color .2s ease}
.toc li a:hover{color:var(--primary);padding-left:16px}
.toc li a.active{color:var(--primary);padding-left:16px}
.toc li a.active::before{background:var(--primary)}
.toc li a.active .num{color:var(--primary)}
.toc-note{margin-top:20px;padding:16px;border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface);font-size:13px;color:var(--ink-500);line-height:1.75}
.toc-note strong{display:block;color:var(--ink-900);font-size:13px;margin-bottom:6px}

/* ============ 内容块 ============ */
.block{padding-bottom:56px;margin-bottom:56px;border-bottom:1px solid var(--line)}
.block:last-child{padding-bottom:0;margin-bottom:0;border-bottom:0}
.block-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.8fr);gap:32px;align-items:end;margin-bottom:28px}
.block-head h2{display:flex;align-items:baseline;gap:14px;font-size:clamp(22px,2.2vw,32px);line-height:1.3;font-weight:700;color:var(--ink-900);letter-spacing:-.01em}
.block-head .num{font-size:14px;font-weight:700;color:var(--accent);letter-spacing:.06em;flex:none}
.block-head p{font-size:14px;color:var(--ink-500)}

.media-block{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:40px;align-items:start}
.media-block.reverse{grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr)}
.media-block.reverse .media-figure{order:2}
.media-figure{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:var(--surface-2)}
.media-figure img{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:0}
.media-body h3{font-size:19px;font-weight:600;color:var(--ink-900);line-height:1.5;margin-bottom:10px}
.media-body p{font-size:15px;color:var(--ink-500);line-height:1.85;margin-bottom:18px}
.check-list{display:grid;gap:12px}
.check-list li{display:flex;gap:12px;font-size:15px;color:var(--ink-700);line-height:1.75}
.check-list svg{width:18px;height:18px;flex:none;margin-top:5px;color:var(--primary)}

/* ============ 时间线 ============ */
.timeline{margin:44px 0 8px;padding-left:8px}
.timeline li{position:relative;padding:0 0 28px 34px;border-left:1px solid var(--line)}
.timeline li:last-child{border-left-color:transparent;padding-bottom:0}
.timeline li::before{
  content:"";position:absolute;left:-7px;top:6px;width:13px;height:13px;border-radius:50%;
  background:var(--bg);border:2px solid var(--primary);
}
.timeline .step-title{display:block;font-size:16px;font-weight:600;color:var(--ink-900);margin-bottom:4px}
.timeline .step-title em{font-style:normal;font-size:12px;font-weight:600;color:var(--primary);letter-spacing:.08em;margin-right:10px}
.timeline p{font-size:15px;color:var(--ink-500)}

/* ============ 情形卡 ============ */
.case-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:8px}
.case-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;
  box-shadow:var(--shadow-1);transition:transform .22s ease,border-color .22s ease;
}
.case-card:hover{transform:translateY(-2px);border-color:rgba(75,63,214,.3)}
.case-card .num{font-size:12px;font-weight:700;color:var(--accent);letter-spacing:.06em}
.case-card h3{font-size:17px;font-weight:600;color:var(--ink-900);margin:10px 0 8px}
.case-card p{font-size:14px;color:var(--ink-500);line-height:1.8}

/* ============ CTA 深墨面板 ============ */
.cta-band{padding:0 0 96px}
.cta-panel{
  position:relative;overflow:hidden;background:var(--ink-900);border-radius:24px;padding:52px;
  display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,.7fr);gap:32px;align-items:center;
}
.cta-panel::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.06;
  background-image:radial-gradient(#fff 1px,transparent 1px);background-size:18px 18px;
}
.cta-panel h2{font-size:clamp(22px,2.2vw,30px);line-height:1.35;font-weight:700;color:#fff;letter-spacing:-.01em}
.cta-panel p{color:rgba(255,255,255,.72);font-size:15px;margin-top:12px;max-width:36em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;position:relative;z-index:1}
.cta-panel > div:first-child{position:relative;z-index:1}

/* ============ FAQ ============ */
.faq-wrap{max-width:760px;margin:0 auto}
.faq-list{border-top:1px solid var(--line);margin-top:36px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%;
  background:none;border:0;padding:22px 0;text-align:left;font-size:17px;font-weight:500;color:var(--ink-900);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--primary)}
.faq-q .plus{flex:none;width:22px;height:22px;position:relative;transition:transform .28s ease}
.faq-q .plus::before,.faq-q .plus::after{content:"";position:absolute;background:var(--primary);border-radius:2px}
.faq-q .plus::before{left:0;top:10px;width:22px;height:2px}
.faq-q .plus::after{left:10px;top:0;width:2px;height:22px;transition:opacity .28s ease}
.faq-item.open .faq-q .plus{transform:rotate(180deg)}
.faq-item.open .faq-q .plus::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{font-size:15px;color:var(--ink-500);padding:0 40px 24px 0;line-height:1.85}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:#fff;position:relative;overflow:hidden;margin-top:0}
.site-footer::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:radial-gradient(#fff 1px,transparent 1px);background-size:20px 20px;
}
.footer-inner{position:relative;z-index:1;padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff}
.footer-brand .brand-mark{background:rgba(255,255,255,.1)}
.footer-brand strong{display:block;font-size:16px}
.footer-brand span span{font-size:12px;letter-spacing:.08em;color:rgba(255,255,255,.6)}
.footer-grid p{font-size:14px;color:rgba(255,255,255,.72);line-height:1.85;margin-top:14px;max-width:32em}
.footer-grid h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-links a:hover{color:var(--accent)}
.footer-bottom{
  position:relative;z-index:1;margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);
}
.back-top{display:inline-flex;align-items:center;gap:8px;background:none;border:0;color:rgba(255,255,255,.72);font-size:13px}
.back-top svg{width:16px;height:16px}
.back-top:hover{color:var(--accent)}

/* ============ 悬浮咨询 ============ */
.float-btn{
  position:fixed;right:28px;bottom:28px;z-index:150;width:48px;height:48px;border-radius:50%;
  background:var(--primary);color:#fff;border:0;display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-1);transition:background-color .2s ease,transform .2s ease;
}
.float-btn:hover{background:var(--primary-600);transform:translateY(-2px)}
.float-btn svg{width:22px;height:22px}

/* ============ 弹层 ============ */
.modal{position:fixed;inset:0;z-index:300;display:none;align-items:center;justify-content:center;padding:24px}
.modal.open{display:flex}
.modal-mask{position:absolute;inset:0;background:rgba(11,11,18,.55)}
.modal-panel{
  position:relative;width:100%;max-width:520px;background:var(--surface);border-radius:20px;padding:32px;
  box-shadow:var(--shadow-1);max-height:90vh;overflow:auto;
}
.modal-close{
  position:absolute;top:14px;right:14px;width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);background:var(--surface);display:inline-flex;align-items:center;justify-content:center;color:var(--ink-500);
}
.modal-close:hover{background:var(--surface-2);color:var(--ink-900)}
.modal-close svg{width:18px;height:18px}
.modal-panel h2{font-size:22px;font-weight:700;color:var(--ink-900)}
.modal-panel .modal-sub{font-size:14px;color:var(--ink-500);margin-top:8px;margin-bottom:24px}
.field{display:grid;gap:8px;margin-bottom:16px}
.field label{font-size:13px;font-weight:500;color:var(--ink-700)}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:10px;background:var(--bg);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:auto;min-height:104px;padding:12px 14px;resize:vertical;line-height:1.7}
.field select{
  appearance:none;-webkit-appearance:none;padding-right:40px;
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236E6E7A' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;background-size:18px;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-050)}
.field.error input,.field.error textarea{border-color:var(--danger)}
.field .err-msg{font-size:12px;color:var(--danger);display:none}
.field.error .err-msg{display:block}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--ink-500);margin:6px 0 22px}
.check-row input{width:16px;height:16px;margin-top:4px;accent-color:var(--primary)}
.modal-actions{display:grid;gap:12px}
.modal-actions .btn{width:100%}
.success-state{text-align:center;padding:16px 0 4px}
.success-state .tick{
  width:56px;height:56px;border-radius:50%;background:var(--primary-050);color:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.success-state .tick svg{width:26px;height:26px}
.success-state h2{margin-bottom:10px}
.success-state p{font-size:15px;color:var(--ink-500);margin-bottom:24px}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .section{padding:72px 0}
  .cat-layout{grid-template-columns:1fr;gap:36px}
  .toc{position:static}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media img{aspect-ratio:16/9}
  .cta-panel{grid-template-columns:1fr;padding:40px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .page-hero{padding-bottom:48px}
  .block{padding-bottom:40px;margin-bottom:40px}
  .block-head{grid-template-columns:1fr;gap:12px;align-items:start}
  .media-block,.media-block.reverse{grid-template-columns:1fr;gap:24px}
  .media-block.reverse .media-figure{order:0}
  .case-grid{grid-template-columns:1fr}
  .cta-panel{padding:32px 24px;border-radius:18px}
  .cta-actions{flex-direction:column;align-items:stretch}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-inner{padding:56px 0 24px}
  .float-btn{right:16px;bottom:calc(16px + env(safe-area-inset-bottom))}
  .modal{padding:0;align-items:flex-end}
  .modal-panel{max-width:none;border-radius:20px 20px 0 0;max-height:92vh}
  .faq-a p{padding-right:0}
  .timeline{padding-left:0}
}
@media (max-width:520px){
  .hero-copy h1{font-size:26px}
  .lede{font-size:16px}
  .search-bar form{flex-direction:column}
  .search-bar form .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
:root{
  --bg:#FAF8F5;
  --surface:#FFFFFF;
  --surface-2:#F2EFEA;
  --line:#E7E3DC;
  --ink-900:#0B0B12;
  --ink-700:#2C2C36;
  --ink-500:#6E6E7A;
  --ink-300:#A9A6A0;
  --primary:#4B3FD6;
  --primary-600:#3A2FBD;
  --primary-050:#EEECFB;
  --accent:#E8703A;
  --accent-050:#FDEDE4;
  --danger:#C0392B;
  --success:#1F8A5B;
  --r-xs:6px;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(11,11,18,.04), 0 10px 28px -18px rgba(11,11,18,.18);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px; --sp-6:32px; --sp-7:48px; --sp-8:64px;
  --header-h:64px;
  --font:-apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
}

/* ============ reset / base ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:-0.01em}
h1{font-size:clamp(28px,3.4vw,44px);line-height:1.2}
h2{font-size:clamp(22px,2.2vw,32px);line-height:1.3}
h3{font-size:19px;line-height:1.5;font-weight:600}
p{margin:0}
img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;font-size:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:16px;color:var(--ink-900)}
strong{font-weight:600;color:var(--ink-900)}
svg{display:block}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}

/* ============ 容器 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ 按钮 / 徽章 / 链接 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:10px;border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;letter-spacing:0;
  transition:background-color .2s ease, color .2s ease, border-color .2s ease, transform .2s ease, opacity .2s ease;
  white-space:nowrap;
}
.btn svg{width:18px;height:18px;transition:transform .2s ease}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-600);transform:translateY(-1px)}
.btn-primary:hover svg{transform:translateX(2px)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:transparent;border-color:var(--line);color:var(--ink-900)}
.btn-outline:hover{background:var(--surface-2)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none}
.link-text{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:15px}
.link-text span{border-bottom:1px solid transparent;transition:border-color .2s ease}
.link-text:hover span{border-color:var(--primary)}
.link-text svg{width:18px;height:18px;transition:transform .2s ease}
.link-text:hover svg{transform:translateX(2px)}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);background:var(--primary-050);color:var(--primary);font-size:12px;font-weight:500;letter-spacing:.02em}
.badge-accent{background:var(--accent-050);color:var(--accent)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:500;color:var(--primary);letter-spacing:.02em}
.eyebrow::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--primary)}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color .25s ease, border-color .25s ease;
}
.site-header.is-scrolled{background:rgba(250,248,245,.96);border-bottom-color:var(--line)}
.nav-wrap{
  height:var(--header-h);
  display:grid;grid-template-columns:minmax(0,1fr) auto;
  align-items:center;gap:24px;
}
.nav-left{display:flex;align-items:center;gap:32px;min-width:0}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink-900);text-decoration:none;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex-shrink:0;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--ink-900);color:#fff;
}
.brand-mark svg{width:20px;height:20px}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:-0.01em}
.brand-text span{font-size:11px;color:var(--ink-500);letter-spacing:.08em;margin-top:2px}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;height:var(--header-h);
  font-size:15px;font-weight:500;color:var(--ink-700);text-decoration:none;
  transition:color .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:14px;width:100%;height:2px;border-radius:2px;
  background:var(--primary);transform:translateX(-50%) scaleX(0);transform-origin:center;
  transition:transform .22s ease;
}
.nav-links a:hover{color:var(--ink-900)}
.nav-links a:hover::after{transform:translateX(-50%) scaleX(.6)}
.nav-links a[aria-current="page"]{color:var(--ink-900);font-weight:600}
.nav-links a[aria-current="page"]::after{transform:translateX(-50%) scaleX(1)}
.nav-right{display:flex;align-items:center;gap:12px;justify-self:end}
.icon-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:transparent;
  color:var(--ink-700);display:inline-flex;align-items:center;justify-content:center;
  transition:background-color .2s ease,border-color .2s ease,color .2s ease;
}
.icon-btn svg{width:20px;height:20px}
.icon-btn:hover{background:var(--surface-2);border-color:var(--ink-300);color:var(--ink-900)}
.nav-toggle{display:none}
.search-bar{
  display:none;border-top:1px solid var(--line);background:var(--surface);
}
.search-bar.is-open{display:block}
.search-bar form{display:flex;gap:12px;padding:16px 0}
.search-bar input{
  flex:1;height:48px;padding:0 16px;border-radius:10px;border:1px solid var(--line);
  background:var(--surface);transition:border-color .2s ease, box-shadow .2s ease;
}
.search-bar input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-050)}

/* ============ 通用板块 ============ */
main{display:block}
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-line{border-top:1px solid var(--line)}
.section-head{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px;
  align-items:end;margin-bottom:40px;
}
.section-head .head-left{display:flex;align-items:baseline;gap:18px;min-width:0}
.head-num{
  font-size:14px;font-weight:700;color:var(--accent);
  font-variant-numeric:tabular-nums;letter-spacing:.06em;flex-shrink:0;
}
.section-head .head-right{font-size:15px;color:var(--ink-500);line-height:1.7;max-width:420px;justify-self:end}

/* ============ 页面首屏 ============ */
.page-hero{
  position:relative;padding:56px 0 8px;
  background-color:var(--bg);
  background-image:
    radial-gradient(rgba(11,11,18,.06) 1px, transparent 1px);
  background-size:22px 22px;
  background-position:0 0;
}
.crumb{padding:0 0 22px;border-bottom:1px solid var(--line)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-500)}
.crumb li{display:inline-flex;align-items:center;gap:8px}
.crumb li:not(:last-child)::after{content:"/";color:var(--ink-300)}
.crumb a{color:var(--ink-500)}
.crumb a:hover{color:var(--primary)}
.crumb li[aria-current="page"]{color:var(--ink-900);font-weight:500}
.hero-inner{max-width:820px;margin:0 auto;text-align:center;padding:56px 0 0}
.hero-inner h1{margin:18px 0 16px}
.hero-lead{font-size:17px;color:var(--ink-500);line-height:1.8;max-width:640px;margin:0 auto}
.hero-meta{
  display:flex;flex-wrap:wrap;justify-content:center;gap:8px 20px;
  margin-top:24px;font-size:13px;color:var(--ink-500);font-variant-numeric:tabular-nums;
}
.hero-meta span{display:inline-flex;align-items:center;gap:8px}
.hero-meta span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent);flex-shrink:0}

/* 搜索框 */
.faq-search{max-width:640px;margin:40px auto 0}
.faq-search-box{position:relative}
.faq-search-box .search-icon{
  position:absolute;left:16px;top:50%;transform:translateY(-50%);
  width:20px;height:20px;color:var(--ink-300);pointer-events:none;
}
.faq-search input{
  width:100%;height:48px;padding:0 18px 0 48px;border-radius:10px;
  border:1px solid var(--line);background:var(--surface);color:var(--ink-900);
  transition:border-color .2s ease, box-shadow .2s ease;
}
.faq-search input::placeholder{color:var(--ink-300)}
.faq-search input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-050)}
.faq-search-hint{margin-top:12px;font-size:13px;color:var(--ink-500);text-align:center}
.faq-chips{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:18px}
.chip{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--surface);color:var(--ink-700);
  font-size:13px;transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.chip:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-050)}

/* ============ 快速定位卡片 ============ */
.quick-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.quick-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--shadow-1);
  transition:transform .22s ease,border-color .22s ease;
  display:flex;flex-direction:column;gap:12px;
}
.quick-card:hover{transform:translateY(-2px);border-color:rgba(75,63,214,.3)}
.quick-card .q-num{
  font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.08em;
  font-variant-numeric:tabular-nums;
}
.quick-card p{font-size:15px;color:var(--ink-500);line-height:1.75}
.quick-card a{margin-top:auto;font-size:14px;font-weight:600;color:var(--primary)}

/* ============ 步骤流程 ============ */
.steps{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;
  border-top:1px solid var(--line);
}
.step{
  position:relative;padding:28px 24px 4px 0;
  border-right:1px solid var(--line);
}
.step:last-child{border-right:0;padding-right:0}
.step .step-idx{
  display:inline-flex;align-items:center;justify-content:center;
  width:28px;height:28px;border-radius:50%;background:var(--primary-050);color:var(--primary);
  font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;margin-bottom:14px;
}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14.5px;color:var(--ink-500);line-height:1.75}

/* ============ 图文块 ============ */
.media-block{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:48px;align-items:center;
}
.media-block figure{margin:0;border-radius:var(--r-lg);overflow:hidden;background:var(--surface-2)}
.media-block figure img{width:100%;aspect-ratio:3/2;object-fit:cover}
.media-block .media-text h2{margin-bottom:16px}
.media-block .media-text p{color:var(--ink-500);font-size:15.5px}
.check-list{margin-top:22px;display:grid;gap:12px}
.check-list li{display:flex;gap:12px;font-size:15px;color:var(--ink-700);line-height:1.7}
.check-list li svg{width:20px;height:20px;color:var(--success);flex-shrink:0;margin-top:3px}

/* ============ FAQ 分组 ============ */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-group{padding-top:8px}
.faq-group + .faq-group{margin-top:48px;border-top:1px solid var(--line);padding-top:44px}
.faq-group-head{display:flex;align-items:baseline;gap:16px;margin-bottom:20px}
.faq-group-head .head-num{color:var(--primary)}
.faq-group-head h2{font-size:22px}
.faq-group-head .group-note{font-size:14px;color:var(--ink-500);margin-left:auto;display:none}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item.is-hidden{display:none}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;background:transparent;border:0;text-align:left;
  font-size:17px;font-weight:500;color:var(--ink-900);line-height:1.6;
  transition:color .2s ease, padding-left .2s ease;
}
.faq-q:hover{color:var(--primary);padding-left:6px}
.faq-q .faq-icon{
  width:22px;height:22px;flex-shrink:0;color:var(--primary);
  transition:transform .25s ease;
}
.faq-item.is-open .faq-q .faq-icon{transform:rotate(180deg)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a-inner{padding:0 40px 24px 4px;font-size:15px;color:var(--ink-500);line-height:1.85}
.faq-a-inner p + p{margin-top:12px}
.faq-a-inner ul{margin-top:12px;display:grid;gap:8px}
.faq-a-inner ul li{position:relative;padding-left:16px;font-size:14.5px}
.faq-a-inner ul li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;background:var(--primary)}
.faq-empty{
  display:none;padding:40px 24px;text-align:center;color:var(--ink-500);font-size:15px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);margin-top:24px;
}
.faq-empty.is-visible{display:block}
.faq-empty svg{width:28px;height:28px;color:var(--primary);margin:0 auto 12px}

/* ============ 协助卡 / CTA ============ */
.help-card{
  max-width:820px;margin:0 auto;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:40px;box-shadow:var(--shadow-1);
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:28px;align-items:center;
}
.help-card h2{font-size:22px;margin-bottom:10px}
.help-card p{font-size:15px;color:var(--ink-500);max-width:460px}
.help-meta{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px 20px;font-size:13px;color:var(--ink-500);font-variant-numeric:tabular-nums}
.help-meta span{display:inline-flex;align-items:center;gap:8px}
.help-meta span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--primary)}
.help-actions{display:flex;flex-direction:column;gap:12px}

.cta-band{
  position:relative;overflow:hidden;
  background:var(--ink-900);border-radius:24px;padding:56px;
  color:#fff;
  background-image:radial-gradient(rgba(255,255,255,.07) 1px, transparent 1px);
  background-size:24px 24px;
}
.cta-band .cta-grid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:40px;align-items:center}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:14px}
.cta-band p{color:rgba(255,255,255,.72);font-size:15.5px;max-width:560px}
.cta-band .cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}
.cta-band .btn-outline{border-color:rgba(255,255,255,.28);color:#fff}
.cta-band .btn-outline:hover{background:rgba(255,255,255,.1)}
.cta-stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;margin-top:40px;padding-top:28px;border-top:1px solid rgba(255,255,255,.14);
}
.cta-stats .stat b{
  display:block;font-size:clamp(26px,2.6vw,36px);font-weight:800;color:var(--accent);
  font-variant-numeric:tabular-nums;line-height:1.1;
}
.cta-stats .stat span{display:block;margin-top:8px;font-size:13.5px;color:rgba(255,255,255,.7)}

.back-home{display:flex;justify-content:center;padding:0 0 8px}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:#fff;margin-top:96px;
  background-image:radial-gradient(rgba(255,255,255,.05) 1px, transparent 1px);
  background-size:26px 26px;
}
.footer-inner{padding:72px 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;color:#fff;text-decoration:none}
.footer-brand .brand-mark{background:rgba(255,255,255,.1)}
.footer-brand span strong{display:block;font-size:16px;color:#fff}
.footer-brand span span{display:block;font-size:11px;color:rgba(255,255,255,.6);letter-spacing:.08em;margin-top:2px}
.footer-grid p{font-size:14px;color:rgba(255,255,255,.72);line-height:1.8;margin-top:18px;max-width:340px}
.footer-grid h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:18px}
.footer-links{display:grid;gap:12px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72);transition:color .2s ease}
.footer-links a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}
.back-top{
  display:inline-flex;align-items:center;gap:8px;height:36px;padding:0 14px;
  border-radius:var(--r-sm);border:1px solid rgba(255,255,255,.2);background:transparent;
  color:rgba(255,255,255,.8);font-size:13px;transition:border-color .2s ease,color .2s ease;
}
.back-top svg{width:16px;height:16px}
.back-top:hover{border-color:var(--accent);color:var(--accent)}

/* ============ 弹层表单 ============ */
.modal{
  position:fixed;inset:0;z-index:200;display:none;
  align-items:center;justify-content:center;padding:24px;
  background:rgba(11,11,18,.55);
}
.modal.is-open{display:flex}
.modal-panel{
  width:100%;max-width:540px;background:var(--surface);border-radius:20px;
  padding:32px;box-shadow:var(--shadow-1);position:relative;
  max-height:90vh;overflow-y:auto;
}
.modal-close{
  position:absolute;top:16px;right:16px;width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);background:transparent;color:var(--ink-700);
  display:inline-flex;align-items:center;justify-content:center;
  transition:background-color .2s ease,border-color .2s ease;
}
.modal-close svg{width:18px;height:18px}
.modal-close:hover{background:var(--surface-2);border-color:var(--ink-300)}
.modal-panel h3{font-size:22px;margin-bottom:8px}
.modal-panel .modal-sub{font-size:14.5px;color:var(--ink-500);margin-bottom:24px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;font-weight:500;color:var(--ink-700);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;border-radius:10px;border:1px solid var(--line);
  background:var(--surface);transition:border-color .2s ease, box-shadow .2s ease;
}
.field textarea{height:auto;padding:12px 14px;line-height:1.7;resize:vertical;min-height:104px}
.field select{
  appearance:none;-webkit-appearance:none;
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236E6E7A' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;background-size:18px;
  padding-right:44px;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-050);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--danger)}
.field .err{display:none;margin-top:6px;font-size:12.5px;color:var(--danger)}
.field.has-error .err{display:block}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--ink-500);margin:4px 0 22px}
.consent input{width:16px;height:16px;margin-top:3px;flex-shrink:0;accent-color:var(--primary)}
.modal-success{display:none;text-align:center;padding:24px 0 8px}
.modal-success.is-visible{display:block}
.modal-success .ok-icon{
  width:56px;height:56px;border-radius:50%;background:var(--primary-050);color:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;margin-bottom:20px;
}
.modal-success .ok-icon svg{width:26px;height:26px}
.modal-success h3{margin-bottom:10px}
.modal-success p{font-size:15px;color:var(--ink-500);margin-bottom:24px}

/* ============ 悬浮按钮 ============ */
.float-btn{
  position:fixed;right:24px;bottom:24px;z-index:90;
  width:48px;height:48px;border-radius:50%;border:0;background:var(--primary);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-1);transition:background-color .2s ease,transform .2s ease;
}
.float-btn svg{width:22px;height:22px}
.float-btn:hover{background:var(--primary-600);transform:translateY(-2px)}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .55s ease, transform .55s ease}
.reveal.is-visible{opacity:1;transform:none}

/* ============ 抽屉遮罩 ============ */
.drawer-mask{
  position:fixed;inset:0;z-index:110;background:rgba(11,11,18,.5);
  opacity:0;pointer-events:none;transition:opacity .25s ease;
}
body.drawer-open .drawer-mask{opacity:1;pointer-events:auto}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  :root{--header-h:56px}
  .section{padding:72px 0}
  .section-tight{padding:48px 0}
  .nav-links{
    position:fixed;top:0;right:0;z-index:120;
    height:100%;width:84vw;max-width:380px;
    background:var(--surface);border-left:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:0;
    padding:80px 24px 32px;overflow-y:auto;
    transform:translateX(102%);transition:transform .28s ease;
  }
  body.drawer-open .nav-links{transform:translateX(0)}
  .nav-links a{height:52px;border-bottom:1px solid var(--line);font-size:16px;font-weight:500}
  .nav-links a::after{display:none}
  .nav-links a[aria-current="page"]{color:var(--primary)}
  .nav-toggle{display:inline-flex}
  .nav-left{gap:0}
  .section-head{grid-template-columns:minmax(0,1fr);gap:16px;align-items:start}
  .section-head .head-right{justify-self:start}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step{border-right:1px solid var(--line);padding:24px 20px 20px 0}
  .step:nth-child(2n){border-right:0;padding-right:0}
  .step:nth-child(n+3){border-top:1px solid var(--line)}
  .media-block{grid-template-columns:minmax(0,1fr);gap:28px}
  .help-card{grid-template-columns:minmax(0,1fr);padding:32px}
  .help-actions{flex-direction:row;flex-wrap:wrap}
  .cta-band{padding:40px}
  .cta-band .cta-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .cta-band .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .container{padding:0 16px}
  .section{padding:56px 0}
  .section-tight{padding:40px 0}
  .page-hero{padding:32px 0 4px}
  .hero-inner{padding:40px 0 0}
  .hero-lead{font-size:16px}
  .quick-grid{grid-template-columns:minmax(0,1fr)}
  .steps{grid-template-columns:minmax(0,1fr)}
  .step{border-right:0;border-top:1px solid var(--line);padding:24px 0}
  .step:first-child{border-top:0;padding-top:8px}
  .faq-q{font-size:16px;padding:18px 2px}
  .faq-a-inner{padding:0 12px 20px 2px}
  .faq-group-head{flex-wrap:wrap;gap:10px}
  .help-card{padding:24px}
  .help-actions{flex-direction:column}
  .help-actions .btn{width:100%}
  .cta-band{padding:28px;border-radius:18px}
  .cta-band h2{font-size:22px}
  .cta-stats{grid-template-columns:minmax(0,1fr);gap:20px}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .footer-inner{padding:48px 0 24px}
  .site-footer{margin-top:56px}
  .modal{padding:0;align-items:flex-end}
  .modal-panel{max-width:100%;border-radius:20px 20px 0 0;padding:28px 20px 32px;max-height:92vh}
  .modal-close{top:12px;right:12px}
  .float-btn{right:16px;bottom:16px}
  .back-home{padding-bottom:0}
}
@media (max-width:480px){
  .brand-text strong{font-size:15px}
  .nav-right{gap:8px}
  .cta-band{padding:22px}
  .badge{font-size:11.5px}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none !important;animation:none !important}
  .reveal{opacity:1;transform:none}
}