/* roulang page: index */
:root{
  --ink-900:#0A1512;
  --ink-700:#14302B;
  --brand-600:#0E5C4C;
  --brand-400:#17A883;
  --mint-500:#17E0B0;
  --ember-500:#FF6A3D;
  --paper:#F6F4EF;
  --paper-2:#FFFFFF;
  --line:#E2DDD3;
  --text-1:#1B1B18;
  --text-2:#5C5F58;
  --text-3:#8A8D86;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:20px;
  --shadow-1:0 1px 2px rgba(10,21,18,.06);
  --shadow-2:0 12px 32px rgba(10,21,18,.07);
  --ease:cubic-bezier(.2,.7,.3,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text-1);
  font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Helvetica,Arial,sans-serif;
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:700;line-height:1.22;letter-spacing:-.01em;color:var(--text-1)}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.grid-x{display:flex;flex-wrap:wrap}
.cell{flex:0 0 auto;width:100%}
.text-mono{font-family:var(--mono)}
:focus-visible{outline:2px solid var(--mint-500);outline-offset:2px}

/* ============ 顶部导航 ============ */
.site-header{position:sticky;top:0;z-index:80;background:var(--paper);transition:box-shadow .2s var(--ease)}
.site-header.is-stuck{box-shadow:var(--shadow-1)}
.brandbar{background:var(--ink-900);color:#fff;transition:height .2s var(--ease),opacity .2s var(--ease);height:44px;overflow:hidden}
.site-header.is-stuck .brandbar{height:0;opacity:0}
.brandbar__inner{height:44px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brandbar__logo{font-family:var(--serif);font-size:16px;font-weight:700;letter-spacing:.02em;color:#fff;display:flex;align-items:center;gap:10px;white-space:nowrap}
.brandbar__logo em{font-style:normal;width:8px;height:8px;border-radius:2px;background:var(--mint-500);display:inline-block}
.brandbar__tools{display:flex;align-items:center;gap:20px;font-size:13px;color:rgba(255,255,255,.75)}
.brandbar__tools a{transition:color .2s var(--ease)}
.brandbar__tools a:hover{color:#fff}
.brandbar__tools .sep{width:1px;height:12px;background:rgba(255,255,255,.22)}
.channelbar{background:var(--paper);border-bottom:1px solid var(--line)}
.channelbar__inner{height:60px;display:flex;align-items:center;gap:28px;transition:height .2s var(--ease)}
.site-header.is-stuck .channelbar__inner{height:56px}
.menu-toggle{display:none;width:44px;height:44px;align-items:center;justify-content:center;font-size:18px;color:var(--ink-900);border-radius:var(--r-sm)}
.menu-toggle:hover{background:rgba(14,92,76,.07)}
.nav-links{display:flex;align-items:center;gap:24px;font-size:15px;flex:0 0 auto}
.nav-links a{position:relative;padding:8px 0;color:var(--text-2);transition:color .2s var(--ease)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:2px;height:2px;width:0;background:var(--brand-600);transition:width .24s var(--ease)}
.nav-links a:hover{color:var(--text-1)}
.nav-links a:hover::after{width:100%}
.nav-links a.is-active{color:var(--text-1);font-weight:600}
.nav-links a.is-active::after{width:100%}
.nav-search{position:relative;margin-left:auto;flex:0 0 auto}
.nav-search input{width:280px;height:40px;border:1px solid var(--line);background:var(--paper-2);border-radius:var(--r-sm);padding:0 14px 0 38px;font-size:14px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search input:focus{outline:none;border-color:var(--brand-400);box-shadow:0 0 0 3px rgba(23,224,176,.28)}
.nav-search i{position:absolute;left:14px;top:50%;transform:translateY(-50%);font-size:13px;color:var(--text-3)}
.hotwords{display:flex;align-items:center;gap:8px;overflow-x:auto;max-width:360px;scrollbar-width:none;flex:0 0 auto}
.hotwords::-webkit-scrollbar{display:none}
.hotword{flex:0 0 auto;font-size:13px;color:var(--brand-600);border:1px solid rgba(14,92,76,.26);border-radius:999px;padding:3px 12px;transition:background .2s var(--ease),transform .2s var(--ease)}
.hotword:hover{background:rgba(14,92,76,.08);transform:translateY(-1px)}
.mobile-panel{position:fixed;inset:0 0 0 auto;width:min(86vw,360px);background:var(--paper-2);z-index:120;transform:translateX(102%);transition:transform .26s var(--ease);box-shadow:-12px 0 40px rgba(10,21,18,.16);padding:24px;overflow-y:auto}
.mobile-panel.is-open{transform:translateX(0)}
.mobile-panel__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.mobile-panel__brand{font-family:var(--serif);font-size:16px;font-weight:700}
.mobile-panel__close{width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:var(--r-sm);font-size:18px}
.mobile-panel__close:hover{background:rgba(14,92,76,.07)}
.mobile-panel .nav-search{margin:0 0 20px}
.mobile-panel .nav-search input{width:100%}
.mobile-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:24px}
.mobile-nav a{padding:12px 4px;border-bottom:1px solid var(--line);font-size:16px;color:var(--text-2)}
.mobile-nav a.is-active{color:var(--brand-600);font-weight:600}
.mobile-tags{display:flex;flex-wrap:wrap;gap:8px}
.mask{position:fixed;inset:0;background:rgba(10,21,18,.42);z-index:110;opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s}
.mask.is-open{opacity:1;visibility:visible}

/* ============ Hero ============ */
.hero{padding:72px 0 80px;position:relative;overflow:hidden}
.hero__grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.hero__eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.12em;color:var(--brand-600);border:1px solid rgba(14,92,76,.24);border-radius:999px;padding:5px 14px;margin-bottom:22px}
.hero h1{font-size:clamp(32px,4.4vw,60px);line-height:1.14;letter-spacing:-.012em}
.hero h1 .hl{color:var(--brand-600)}
.hero__sub{margin-top:20px;font-size:19px;line-height:1.8;color:var(--text-2);max-width:560px}
.hero__actions{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:44px;padding-top:26px;border-top:1px solid var(--line)}
.metric__num{font-family:var(--mono);font-size:30px;font-weight:600;color:var(--brand-600);letter-spacing:-.02em;line-height:1.2}
.metric__num small{font-size:14px;color:var(--text-2);margin-left:2px}
.metric__label{font-size:12px;letter-spacing:.08em;color:var(--text-3);margin-top:6px}
.hero__visual{position:relative}
.hero__visual img{width:100%;aspect-ratio:4/5;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--shadow-2)}
.hero__card{position:absolute;left:20px;bottom:20px;right:20px;background:rgba(255,255,255,.92);backdrop-filter:blur(6px);border-radius:var(--r-md);padding:16px 18px;box-shadow:var(--shadow-1);border:1px solid rgba(226,221,211,.9)}
.hero__card strong{display:block;font-family:var(--serif);font-size:16px;margin-bottom:4px}
.hero__card span{font-size:13px;color:var(--text-3);letter-spacing:.02em}

/* ============ 按钮 ============ */
.button,.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 28px;border-radius:var(--r-md);font-size:15px;font-weight:600;letter-spacing:.02em;transition:transform .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease),color .18s var(--ease);border:1px solid transparent;text-align:center}
.btn--primary,.button.btn--primary{background:var(--ember-500);color:#fff}
.btn--primary:hover,.button.btn--primary:hover{transform:translateY(-1px);filter:brightness(1.04);box-shadow:0 8px 20px rgba(255,106,61,.26)}
.btn--ghost,.button.btn--ghost{background:transparent;border-color:var(--line);color:var(--text-1)}
.btn--ghost:hover,.button.btn--ghost:hover{background:rgba(14,92,76,.08);transform:translateY(-1px)}
.btn--text{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--brand-600);background:none;padding:0;height:auto}
.btn--text i{transition:transform .2s var(--ease)}
.btn--text:hover i{transform:translateX(4px)}
.btn--light{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.28);color:#fff}
.btn--light:hover{background:rgba(255,255,255,.2);transform:translateY(-1px)}
.btn--sm{height:40px;padding:0 18px;font-size:14px}

/* ============ 横滚条带 ============ */
.ticker{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.ticker__inner{display:flex;align-items:center;gap:20px;height:56px;overflow:hidden}
.ticker__label{flex:0 0 auto;font-size:12px;letter-spacing:.18em;color:var(--brand-600);border-right:1px solid var(--line);padding-right:18px;font-family:var(--mono)}
.ticker__scroll{display:flex;align-items:center;gap:26px;overflow-x:auto;scrollbar-width:none;flex:1 1 auto}
.ticker__scroll::-webkit-scrollbar{display:none}
.ticker__item{flex:0 0 auto;display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-2);padding-right:26px;border-right:1px solid var(--line)}
.ticker__item:last-child{border-right:0}
.ticker__item .t{font-family:var(--mono);font-size:12px;color:var(--text-3)}
.ticker__item:hover strong{color:var(--brand-600)}
.ticker__item strong{font-weight:500;color:var(--text-1);transition:color .2s var(--ease)}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section--alt{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section__title{font-size:clamp(26px,3vw,38px)}
.section__title .idx{font-family:var(--mono);font-size:16px;color:var(--brand-600);margin-right:12px;vertical-align:2px}
.section__desc{margin-top:12px;font-size:16px;color:var(--text-2);max-width:640px;line-height:1.8}
.pill{display:inline-flex;align-items:center;font-size:13px;color:var(--brand-600);border:1px solid rgba(14,92,76,.28);border-radius:var(--r-sm);padding:3px 10px;line-height:1.5;white-space:nowrap}
.pill--ember{background:var(--ember-500);border-color:var(--ember-500);color:#fff;font-weight:600}
.pill--mint{border-color:rgba(23,224,176,.6);color:var(--brand-600)}

/* ============ 权益对比表 ============ */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-md);background:var(--paper-2);box-shadow:var(--shadow-1)}
.plans{width:100%;min-width:820px;border-collapse:collapse}
.plans th,.plans td{padding:18px 20px;text-align:left;font-size:15px;border-bottom:1px solid var(--line)}
.plans thead th{background:var(--ink-900);color:#fff;font-family:var(--serif);font-size:17px;font-weight:700;vertical-align:bottom;border-bottom:0}
.plans thead th small{display:block;font-family:var(--mono);font-size:13px;font-weight:400;color:rgba(255,255,255,.72);margin-top:6px}
.plans tbody tr:nth-child(even){background:var(--paper)}
.plans tbody tr:last-child td{border-bottom:0}
.plans td:first-child,.plans th:first-child{position:sticky;left:0;background:var(--paper-2);z-index:2;font-weight:600;color:var(--text-1);border-right:1px solid var(--line)}
.plans thead th:first-child{background:var(--ink-900)}
.plans tbody tr:nth-child(even) td:first-child{background:#FBF9F5}
.plans .col-boost{background:rgba(14,92,76,.06);position:relative}
.plans thead .col-boost{background:var(--ink-700);box-shadow:inset 0 2px 0 var(--ember-500)}
.plans td.yes{color:var(--brand-600);font-weight:600}
.plans td.no{color:var(--text-3)}

/* ============ 等级亮点 ============ */
.levels{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.level-card{border-radius:var(--r-md);padding:32px 28px;border:1px solid var(--line);background:var(--paper-2);display:flex;flex-direction:column;transition:transform .22s var(--ease),box-shadow .22s var(--ease)}
.level-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.level-card--lg{grid-column:span 6;background:var(--ink-900);border-color:var(--ink-900);color:#fff}
.level-card--sm{grid-column:span 3}
.level-card--offset{margin-top:24px}
.level-card__name{font-family:var(--serif);font-size:24px;font-weight:700;margin-bottom:6px}
.level-card--lg .level-card__name{color:#fff}
.level-card__tag{font-size:13px;color:var(--text-3);letter-spacing:.04em;margin-bottom:20px}
.level-card--lg .level-card__tag{color:rgba(255,255,255,.66)}
.level-card ul{display:flex;flex-direction:column;gap:12px;margin-bottom:26px}
.level-card li{font-size:15px;color:var(--text-2);padding-left:20px;position:relative;line-height:1.7}
.level-card li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--brand-400)}
.level-card--lg li{color:rgba(255,255,255,.82)}
.level-card--lg li::before{background:var(--mint-500)}
.level-card .btn-wrap{margin-top:auto}

/* ============ 专属内容预览 ============ */
.exclusive{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.ex-card{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;transition:transform .22s var(--ease),box-shadow .22s var(--ease)}
.ex-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.ex-card__media{position:relative;overflow:hidden}
.ex-card__media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s var(--ease)}
.ex-card:hover .ex-card__media img{transform:scale(1.03)}
.lock{position:absolute;right:10px;top:10px;display:inline-flex;align-items:center;gap:5px;background:rgba(10,21,18,.74);color:#fff;font-size:12px;padding:4px 9px;border-radius:var(--r-sm)}
.ex-card__body{padding:18px 18px 20px}
.ex-card__body h3{font-size:19px;line-height:1.4;font-family:inherit;font-weight:600;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.ex-card:hover .ex-card__body h3{color:var(--brand-600)}
.ex-meta{font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:10px}
.ex-more{display:flex;justify-content:center;margin-top:36px}

/* ============ 最新信息 / CMS ============ */
.news-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.news-card{grid-column:span 4;background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;display:flex;flex-direction:column;transition:transform .22s var(--ease),box-shadow .22s var(--ease)}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.news-card--lead{grid-column:span 8;display:grid;grid-template-columns:1fr 1fr}
.news-card--lead .news-card__media img{aspect-ratio:16/11;height:100%}
.news-card__media{overflow:hidden;position:relative}
.news-card__media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s var(--ease)}
.news-card:hover .news-card__media img{transform:scale(1.03)}
.news-card__body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1 1 auto}
.news-card__body h3{font-family:inherit;font-size:20px;font-weight:600;line-height:1.42;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card--lead .news-card__body h3{font-size:24px}
.news-card:hover .news-card__body h3{color:var(--brand-600)}
.news-card__body p{font-size:15px;color:var(--text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:18px}
.news-card__meta{margin-top:auto;display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-3);flex-wrap:wrap}
.cms-empty{grid-column:span 12;min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;border:1px dashed var(--line);border-radius:var(--r-md);color:var(--text-3);background:var(--paper-2);text-align:center}
.cms-empty i{font-size:26px;color:var(--text-3)}

/* ============ FAQ ============ */
.faq{max-width:900px;margin:0 auto;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;text-align:left;padding:22px 4px;font-size:17.5px;font-weight:600;color:var(--text-1);transition:color .2s var(--ease),background .2s var(--ease)}
.faq__q:hover{background:var(--paper);color:var(--brand-600)}
.faq__icon{flex:0 0 auto;width:22px;height:22px;position:relative}
.faq__icon::before,.faq__icon::after{content:"";position:absolute;background:var(--brand-600);transition:transform .24s var(--ease),opacity .24s var(--ease)}
.faq__icon::before{left:0;top:10px;width:22px;height:2px}
.faq__icon::after{left:10px;top:0;width:2px;height:22px}
.faq__item.is-open .faq__icon::after{transform:rotate(90deg);opacity:0}
.faq__a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq__a-inner{padding:0 24px 24px 4px;font-size:15px;line-height:1.85;color:var(--text-2);border-left:3px solid var(--mint-500);padding-left:18px;margin-left:2px}

/* ============ CTA ============ */
.cta{background:var(--ink-900);color:#fff;position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:44px 44px;pointer-events:none}
.cta .container{position:relative}
.cta__grid{display:grid;grid-template-columns:6fr 6fr;gap:56px;padding:88px 0 56px;align-items:center}
.cta h2{color:#fff;font-size:clamp(26px,3vw,36px)}
.cta__price{display:flex;align-items:baseline;gap:10px;margin:22px 0 14px}
.cta__price .num{font-family:var(--mono);font-size:44px;font-weight:600;color:var(--mint-500);letter-spacing:-.02em}
.cta__price .unit{font-size:14px;color:rgba(255,255,255,.68)}
.cta__note{font-size:15px;color:rgba(255,255,255,.72);line-height:1.8;max-width:520px}
.cta__form{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:var(--r-md);padding:28px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;color:rgba(255,255,255,.72);margin-bottom:8px}
.field input{width:100%;height:48px;border-radius:var(--r-sm);border:1px solid rgba(255,255,255,.2);background:rgba(10,21,18,.32);color:#fff;padding:0 14px;font-size:15px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.field input::placeholder{color:rgba(255,255,255,.42)}
.field input:focus{outline:none;border-color:var(--brand-400);box-shadow:0 0 0 3px rgba(23,224,176,.28)}
.field .hint{font-size:13px;color:rgba(255,255,255,.5);margin-top:6px}
.cta__form .btn--primary{width:100%}
.promises{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;border-top:1px solid rgba(255,255,255,.12);padding:26px 0 34px}
.promise{display:flex;align-items:center;gap:12px;font-size:14px;color:rgba(255,255,255,.8)}
.promise i{color:var(--mint-500);font-size:16px}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);font-size:14px}
.site-footer__top{border-top:1px solid rgba(255,255,255,.12)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;padding:64px 0 44px}
.footer-brand{font-family:var(--serif);font-size:19px;font-weight:700;color:#fff;margin-bottom:14px;display:flex;align-items:center;gap:10px}
.footer-brand em{font-style:normal;width:8px;height:8px;border-radius:2px;background:var(--mint-500);display:inline-block}
.footer-col p{line-height:1.85;color:rgba(255,255,255,.62)}
.footer-col h4{font-family:inherit;font-size:15px;font-weight:600;color:#fff;margin-bottom:18px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{color:rgba(255,255,255,.68);transition:color .2s var(--ease),padding-left .2s var(--ease)}
.footer-col a:hover{color:#fff;padding-left:3px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.5)}

/* ============ 动效偏好 ============ */
@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .hero__grid{gap:40px}
  .exclusive{grid-template-columns:repeat(3,1fr)}
  .hotwords{max-width:280px}
}
@media (max-width:1023px){
  .nav-links,.channelbar .nav-search,.channelbar .hotwords{display:none}
  .menu-toggle{display:inline-flex}
  .hero{padding:52px 0 60px}
  .hero__grid{grid-template-columns:1fr;gap:36px}
  .hero__visual img{aspect-ratio:16/9}
  .section{padding:72px 0}
  .levels{grid-template-columns:repeat(6,1fr)}
  .level-card--lg{grid-column:span 6}
  .level-card--sm{grid-column:span 3}
  .level-card--offset{margin-top:0}
  .exclusive{grid-template-columns:repeat(2,1fr)}
  .news-card--lead{grid-column:span 12;grid-template-columns:1fr}
  .news-card{grid-column:span 6}
  .cta__grid{grid-template-columns:1fr;gap:36px;padding:64px 0 44px}
  .footer-grid{grid-template-columns:1fr 1fr;padding:52px 0 36px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 16px}
  .brandbar__tools .hide-sm{display:none}
  .metrics{grid-template-columns:repeat(2,1fr);gap:18px}
  .metric__num{font-size:26px}
  .section{padding:56px 0}
  .levels{grid-template-columns:1fr}
  .level-card--lg,.level-card--sm{grid-column:span 1}
  .exclusive{grid-template-columns:1fr}
  .news-card{grid-column:span 12}
  .news-grid{grid-template-columns:1fr}
  .hero__actions .btn{flex:1 1 100%}
  .promises{grid-template-columns:1fr;gap:14px;padding:22px 0 28px}
  .faq__q{font-size:16.5px;padding:20px 2px}
  .plans th,.plans td{padding:14px 16px;font-size:14px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:44px 0 30px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:479px){
  .hero h1{font-size:30px}
  .hero__sub{font-size:16.5px}
  .metrics{grid-template-columns:1fr 1fr}
  .section__head{margin-bottom:26px}
}

/* roulang page: category1 */
:root{
  --ink-900:#0A1512;
  --ink-700:#14302B;
  --brand-600:#0E5C4C;
  --brand-400:#17A883;
  --mint-500:#17E0B0;
  --ember-500:#FF6A3D;
  --paper:#F6F4EF;
  --paper-2:#FFFFFF;
  --line:#E2DDD3;
  --text-1:#1B1B18;
  --text-2:#5C5F58;
  --text-3:#8A8D86;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:20px;
  --shadow-1:0 1px 2px rgba(10,21,18,.06);
  --shadow-2:0 12px 32px rgba(10,21,18,.07);
  --ease:cubic-bezier(.2,.7,.3,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --sans:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  --mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text-1);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.9;
  text-align:left;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea,select{font:inherit}
:focus-visible{outline:2px solid var(--mint-500);outline-offset:2px}
h1,h2,h4{font-family:var(--serif);margin:0;line-height:1.18;letter-spacing:-.01em;font-weight:700}
h3{margin:0;font-family:var(--sans);font-weight:600;font-size:21px;line-height:1.4;letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}

/* ---------- 布局基础 ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.grid-x{display:flex;flex-wrap:wrap;margin-left:-12px;margin-right:-12px}
.cell{flex:0 0 auto;min-width:0;width:100%;padding-left:12px;padding-right:12px}
@media (min-width:640px){
  .medium-6{width:50%}
  .medium-12{width:100%}
}
@media (min-width:1024px){
  .large-3{width:25%}
  .large-4{width:33.3333%}
  .large-8{width:66.6667%}
  .large-9{width:75%}
}
.section-pad{padding:88px 0}
.section-pad--tight{padding:64px 0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 28px;border-radius:var(--r-md);
  font-size:16px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;
  transition:transform .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease);
  white-space:nowrap;
}
.btn--primary{background:var(--ember-500);color:#fff;box-shadow:0 6px 18px rgba(255,106,61,.22)}
.btn--primary:hover{transform:translateY(-1px);background:#FF7C54}
.btn--primary:active{transform:translateY(0)}
.btn--ghost{background:transparent;color:var(--text-1);border-color:var(--line);padding:0 22px}
.btn--ghost:hover{background:rgba(14,92,76,.08);border-color:var(--brand-400);transform:translateY(-1px)}
.btn--ghost:active{transform:translateY(0)}
.btn--onDark{background:transparent;color:#fff;border-color:rgba(255,255,255,.28)}
.btn--onDark:hover{background:rgba(255,255,255,.1);transform:translateY(-1px)}
.btn--block{width:100%}
.btn--text{min-height:auto;padding:0;color:var(--brand-600);font-weight:600}
.btn--text i{transition:transform .18s var(--ease)}
.btn--text:hover i{transform:translateX(4px)}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:90;background:var(--paper)}
.brand-bar{background:var(--ink-900);color:#fff;overflow:hidden;height:44px;transition:height .22s var(--ease),opacity .22s var(--ease)}
.brand-bar__inner{display:flex;align-items:center;justify-content:space-between;height:44px}
.brand{display:inline-flex;align-items:center;gap:10px;font-family:var(--serif);font-size:17px;font-weight:700;letter-spacing:.01em;color:#fff}
.brand em{width:10px;height:10px;border-radius:3px;background:var(--mint-500);display:inline-block}
.brand-bar__tools{display:flex;align-items:center;gap:18px;font-size:13px;color:rgba(255,255,255,.78)}
.tool-link{transition:color .18s var(--ease)}
.tool-link:hover{color:#fff}
.tool-link--solid{padding:5px 14px;border:1px solid rgba(255,255,255,.28);border-radius:var(--r-sm);color:#fff}
.tool-link--solid:hover{background:rgba(255,255,255,.12)}
.tool-icon{width:30px;height:30px;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--r-sm);color:rgba(255,255,255,.78);transition:background-color .18s var(--ease),color .18s var(--ease)}
.tool-icon:hover{background:rgba(255,255,255,.12);color:#fff}

.channel-bar{background:var(--paper);border-bottom:1px solid var(--line);transition:box-shadow .22s var(--ease),border-color .22s var(--ease)}
.channel-bar__inner{display:flex;align-items:center;gap:22px;min-height:60px}
.nav-links{display:flex;align-items:center;gap:26px;font-size:16px}
.nav-links a{
  position:relative;padding:18px 0;color:var(--text-2);font-weight:500;
  transition:color .18s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:12px;height:2px;
  background:var(--brand-600);transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav-links a:hover{color:var(--text-1)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--ink-900);font-weight:600}
.nav-links a.is-active::after{transform:scaleX(1)}
.menu-toggle{display:none;width:44px;height:44px;align-items:center;justify-content:center;border-radius:var(--r-sm);border:1px solid var(--line);color:var(--text-1)}
.menu-toggle:hover{background:var(--paper-2)}

.search-box{position:relative;margin-left:auto;width:290px;max-width:100%}
.search-box input{
  width:100%;height:40px;padding:0 42px 0 14px;
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-sm);
  font-size:14px;color:var(--text-1);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.search-box input::placeholder{color:var(--text-3)}
.search-box input:focus{outline:none;border-color:var(--brand-400);box-shadow:0 0 0 3px rgba(23,224,176,.28)}
.search-box button{
  position:absolute;right:4px;top:4px;width:32px;height:32px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-sm);color:var(--text-3);
  transition:color .18s var(--ease),background-color .18s var(--ease);
}
.search-box button:hover{color:var(--brand-600);background:rgba(14,92,76,.08)}

.hot-words{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;padding:6px 0}
.hot-words::-webkit-scrollbar{display:none}
.hot-words a{
  flex:0 0 auto;font-size:13px;line-height:1.6;padding:4px 10px;
  border:1px solid var(--line);border-radius:var(--r-sm);color:var(--text-2);
  transition:border-color .18s var(--ease),color .18s var(--ease),background-color .18s var(--ease);
}
.hot-words a:hover{border-color:var(--brand-400);color:var(--brand-600);background:rgba(23,168,131,.06)}

.site-header.is-stuck .brand-bar{height:0;opacity:0}
.site-header.is-stuck .channel-bar{border-bottom-color:#D8D2C6;box-shadow:var(--shadow-1)}
.site-header.is-stuck .nav-links a{padding:14px 0}
.site-header.is-stuck .nav-links a::after{bottom:8px}
.site-header.is-stuck .channel-bar__inner{min-height:56px}

/* ---------- Hero ---------- */
.hero{padding:64px 0 40px;background:
  radial-gradient(1100px 460px at 88% -12%,rgba(23,168,131,.10),transparent 62%),
  var(--paper);}
.hero__grid{align-items:center}
.hero__text{padding-right:28px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;color:var(--brand-600);
  border:1px solid rgba(14,92,76,.3);border-radius:var(--r-sm);
  padding:4px 12px;margin-bottom:22px;background:rgba(255,255,255,.6);
}
.hero h1{font-size:52px;line-height:1.14;margin-bottom:20px}
.hero h1 span{display:block;font-size:26px;color:var(--brand-600);font-family:var(--serif);margin-top:12px;letter-spacing:.01em}
.hero__lead{font-size:17px;color:var(--text-2);max-width:640px;line-height:1.95}
.hero__tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero__tags li{
  font-size:13px;color:var(--brand-600);
  border:1px solid rgba(14,92,76,.32);border-radius:var(--r-sm);
  padding:5px 12px;background:rgba(255,255,255,.7);
}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero__stats{display:flex;flex-wrap:wrap;gap:40px;margin-top:44px;padding-top:26px;border-top:1px solid var(--line)}
.hero__stats div{min-width:110px}
.hero__stats b{display:block;font-family:var(--mono);font-size:28px;font-weight:600;letter-spacing:-.02em;color:var(--ink-900)}
.hero__stats span{font-size:12px;letter-spacing:.12em;color:var(--text-3)}

.hero__visual{position:relative}
.hero__visual img{
  width:100%;aspect-ratio:4/5;object-fit:cover;border-radius:var(--r-lg);
  box-shadow:var(--shadow-2);
}
.hero__note{
  position:absolute;left:22px;right:22px;bottom:22px;
  background:rgba(10,21,18,.74);backdrop-filter:blur(6px);
  border-radius:var(--r-md);padding:14px 16px;color:#fff;
}
.hero__note strong{display:block;font-size:15px;font-weight:600;line-height:1.6}
.hero__note span{display:block;font-size:12px;color:rgba(255,255,255,.72);margin-top:4px;letter-spacing:.04em}

/* ---------- 主体：侧栏 + 内容 ---------- */
.page-body{padding:56px 0 24px}
.sidebar{position:sticky;top:132px;align-self:flex-start}
.side-panel{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px;margin-bottom:18px;box-shadow:var(--shadow-1);
}
.side-panel__title{
  font-family:var(--mono);font-size:12px;letter-spacing:.16em;color:var(--text-3);
  text-transform:uppercase;margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--line);
}
.side-nav li+li{border-top:1px solid var(--line)}
.side-nav a{
  display:flex;align-items:center;gap:10px;
  padding:11px 0;font-size:15px;color:var(--text-2);
  transition:color .18s var(--ease),padding-left .18s var(--ease);
}
.side-nav a::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--line);transition:background-color .18s var(--ease)}
.side-nav a:hover{color:var(--brand-600);padding-left:6px}
.side-nav a:hover::before{background:var(--brand-400)}
.side-cta{
  background:var(--ink-900);color:#fff;border-radius:var(--r-md);
  padding:22px 20px;margin-bottom:18px;
}
.side-cta__badge{
  display:inline-block;font-size:12px;letter-spacing:.1em;
  background:var(--ember-500);color:#fff;border-radius:var(--r-sm);
  padding:2px 9px;margin-bottom:12px;
}
.side-cta h3{font-size:18px;color:#fff;margin-bottom:10px;font-family:var(--serif);font-weight:700}
.side-cta p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);margin-bottom:18px}
.side-cta .btn--primary{width:100%}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-cloud a{
  font-size:13px;padding:4px 10px;border-radius:var(--r-sm);
  border:1px solid var(--line);color:var(--text-2);background:var(--paper);
  transition:border-color .18s var(--ease),color .18s var(--ease),background-color .18s var(--ease);
}
.tag-cloud a:hover{border-color:var(--brand-400);color:var(--brand-600);background:rgba(23,168,131,.07)}

.content-col{padding-left:34px}
.entry-block{padding:0 0 40px;margin-bottom:40px;border-bottom:1px solid var(--line)}
.entry-block:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
.entry-block__head{display:flex;align-items:baseline;gap:14px;margin-bottom:14px}
.entry-index{font-family:var(--mono);font-size:16px;color:var(--brand-600);letter-spacing:.06em}
.entry-block h2{font-size:30px;color:var(--ink-900)}
.entry-block__desc{font-size:16px;color:var(--text-2);line-height:1.95;margin-bottom:24px;max-width:760px}

.mini-list{display:flex;flex-direction:column;gap:0;border-top:1px solid var(--line)}
.mini-card{border-bottom:1px solid var(--line)}
.mini-card__link{
  display:flex;gap:18px;align-items:flex-start;padding:18px 14px 18px 0;
  transition:background-color .18s var(--ease),padding-left .18s var(--ease);
}
.mini-card__link:hover{background:rgba(255,255,255,.72);padding-left:12px}
.mini-card__link img{
  flex:0 0 132px;width:132px;height:88px;object-fit:cover;
  border-radius:var(--r-sm);border:1px solid var(--line);
  transition:transform .22s var(--ease);
}
.mini-card__link:hover img{transform:scale(1.03)}
.mini-card__body{min-width:0}
.mini-card__body h3{font-size:18px;line-height:1.5;margin-bottom:6px;display:inline}
.mini-card__body h3::after{
  content:"";display:block;height:1px;width:0;background:var(--brand-600);
  transition:width .24s var(--ease);margin-top:4px;
}
.mini-card__link:hover h3::after{width:100%}
.mini-card__body p{font-size:14px;color:var(--text-2);line-height:1.75;margin-bottom:8px}
.meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-3)}
.pill{
  display:inline-block;font-size:13px;line-height:1.6;padding:2px 10px;
  border:1px solid rgba(14,92,76,.4);border-radius:var(--r-sm);color:var(--brand-600);
  background:rgba(255,255,255,.6);
}

/* ---------- 板块标题通用 ---------- */
.sec-head{display:flex;align-items:baseline;gap:14px;margin-bottom:36px}
.sec-num{font-family:var(--mono);font-size:16px;color:var(--brand-600);letter-spacing:.06em}
.sec-head h2{font-size:34px;color:var(--ink-900)}
.sec-head p{font-size:15px;color:var(--text-2);margin-top:10px}

/* ---------- FAQ ---------- */
.faq-wrap{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.faq-list{border-top:1px solid var(--line);max-width:900px}
.faq-item{border-bottom:1px solid var(--line);position:relative}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--mint-500);
  opacity:0;transition:opacity .2s var(--ease);
}
.faq-item.is-open::before{opacity:1}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 18px;text-align:left;font-size:18px;font-weight:600;color:var(--ink-900);
  transition:background-color .18s var(--ease);
}
.faq-q:hover{background:var(--paper)}
.faq-icon{position:relative;flex:0 0 18px;width:18px;height:18px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand-600);border-radius:1px;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
.faq-a__inner{padding:0 18px 24px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:760px}

/* ---------- 要点清单 ---------- */
.summary{padding:88px 0 72px}
.summary-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 40px;border-top:1px solid var(--line);margin-bottom:36px}
.summary-list li{
  display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--line);
  font-size:16px;color:var(--text-1);line-height:1.8;
}
.summary-list li b{font-family:var(--mono);font-size:15px;color:var(--brand-600);font-weight:600;flex:0 0 28px}
.summary__actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 深色 CTA ---------- */
.dark-cta{background:var(--ink-900);color:#fff;padding:72px 0}
.dark-cta__inner{display:flex;flex-wrap:wrap;gap:40px;align-items:center;justify-content:space-between}
.dark-cta__text{max-width:620px}
.dark-cta .sec-num{color:var(--mint-500)}
.dark-cta h2{font-size:32px;color:#fff;margin:12px 0 14px}
.dark-cta p{font-size:15px;color:rgba(255,255,255,.72);line-height:1.9}
.dark-cta__form{display:flex;flex-direction:column;gap:12px;min-width:300px}
.dark-cta__form label{font-size:14px;color:rgba(255,255,255,.72)}
.dark-cta__form input{
  height:48px;padding:0 14px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.2);
  color:#fff;font-size:15px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.dark-cta__form input::placeholder{color:rgba(255,255,255,.42)}
.dark-cta__form input:focus{outline:none;border-color:var(--brand-400);box-shadow:0 0 0 3px rgba(23,224,176,.3)}
.dark-cta__promise{display:flex;flex-wrap:wrap;gap:24px;margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12)}
.dark-cta__promise span{display:inline-flex;align-items:center;gap:9px;font-size:14px;color:rgba(255,255,255,.74)}
.dark-cta__promise i{color:var(--mint-500)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:#fff}
.site-footer__top{padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;
  border-top:1px solid rgba(255,255,255,.12);padding-top:44px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-family:var(--serif);font-size:18px;font-weight:700;margin-bottom:14px}
.footer-brand em{width:10px;height:10px;border-radius:3px;background:var(--mint-500);display:inline-block}
.footer-col p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);max-width:340px}
.footer-col h4{font-size:14px;letter-spacing:.1em;color:rgba(255,255,255,.5);font-family:var(--mono);font-weight:500;margin-bottom:16px}
.footer-col ul li+li{margin-top:10px}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.76);transition:color .18s var(--ease)}
.footer-col ul a:hover{color:var(--mint-500)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.46);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero h1{font-size:46px}
}
@media (max-width:1023px){
  .container{padding:0 20px}
  .menu-toggle{display:inline-flex}
  .channel-bar__inner{flex-wrap:wrap;gap:14px;padding-top:10px;padding-bottom:12px;align-items:center}
  .nav-links{
    order:5;width:100%;display:none;flex-direction:column;align-items:stretch;gap:0;
    background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-md);
    box-shadow:var(--shadow-1);padding:6px 0;
  }
  .site-header.is-open .nav-links{display:flex}
  .nav-links a{padding:14px 18px;border-bottom:1px solid var(--line)}
  .nav-links li:last-child a{border-bottom:0}
  .nav-links a::after{display:none}
  .nav-links a.is-active{color:var(--brand-600)}
  .search-box{order:4;width:100%;margin-left:0}
  .hot-words{order:6;width:100%}
  .hero{padding:44px 0 28px}
  .hero__text{padding-right:12px}
  .hero__visual{margin-top:32px}
  .hero__visual img{aspect-ratio:16/9}
  .content-col{padding-left:12px;margin-top:36px}
  .sidebar{position:static;margin-bottom:8px}
  .section-pad{padding:64px 0}
  .summary-list{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .dark-cta__form{min-width:0;width:100%}
}
@media (max-width:767px){
  body{font-size:16px}
  .hero h1{font-size:34px}
  .hero h1 span{font-size:20px}
  .hero__stats{gap:26px}
  .hero__stats b{font-size:24px}
  .entry-block h2{font-size:24px}
  .sec-head h2{font-size:26px}
  .mini-card__link{flex-direction:column;gap:12px}
  .mini-card__link img{width:100%;height:auto;aspect-ratio:16/9;flex:none}
  .faq-q{font-size:16px;padding:18px 14px}
  .faq-a__inner{padding:0 14px 20px}
  .dark-cta h2{font-size:24px}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width:519px){
  .container{padding:0 16px}
  .hero h1{font-size:29px}
  .hero__actions .btn{width:100%}
  .summary__actions .btn{width:100%}
  .brand-bar__tools .tool-link{display:none}
  .brand-bar__tools .tool-link--solid{display:inline-block}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
/* ===================== 设计变量 ===================== */
:root{
  --ink-900:#0A1512;
  --ink-700:#14302B;
  --brand-600:#0E5C4C;
  --brand-400:#17A883;
  --mint-500:#17E0B0;
  --ember-500:#FF6A3D;
  --paper:#F6F4EF;
  --paper-2:#FFFFFF;
  --line:#E2DDD3;
  --text-1:#1B1B18;
  --text-2:#5C5F58;
  --text-3:#8A8D86;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:20px;
  --shadow-1:0 1px 2px rgba(10,21,18,.06);
  --shadow-2:0 12px 32px rgba(10,21,18,.07);
  --ease:cubic-bezier(.2,.7,.3,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --sans:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:ui-monospace,"SFMono-Regular",Menlo,monospace;
}
/* ===================== 基础重置 ===================== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:17px;
  line-height:1.9;
  color:var(--text-1);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--mint-500);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section--tight{padding:64px 0;}
.section-title{display:flex;align-items:baseline;gap:14px;font-family:var(--serif);font-size:34px;line-height:1.25;font-weight:700;letter-spacing:-.01em;}
.section-title span.no{font-family:var(--mono);font-size:16px;color:var(--brand-600);letter-spacing:.08em;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
.text-link{font-size:15px;color:var(--brand-600);display:inline-flex;align-items:center;gap:8px;border-bottom:1px solid transparent;transition:border-color .2s var(--ease);}
.text-link:hover{border-color:var(--brand-600);}
.text-link i{transition:transform .2s var(--ease);}
.text-link:hover i{transform:translateX(4px);}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border:1px solid transparent;border-radius:var(--r-md);
  font-size:15px;font-weight:600;letter-spacing:.02em;cursor:pointer;
  transition:transform .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease),filter .18s var(--ease);
}
.btn--primary{background:var(--ember-500);color:#fff;box-shadow:var(--shadow-1);}
.btn--primary:hover{transform:translateY(-1px);filter:brightness(1.05);}
.btn--primary:active{transform:translateY(0);}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--text-1);}
.btn--ghost:hover{background:rgba(14,92,76,.08);border-color:var(--brand-400);}
.btn--block{width:100%;}
.btn--sm{height:40px;padding:0 18px;font-size:14px;}
.btn.is-disabled{opacity:.4;pointer-events:none;}

/* ===================== 头部导航 ===================== */
.site-header{position:sticky;top:0;z-index:80;background:var(--paper);border-bottom:1px solid var(--line);transition:box-shadow .2s var(--ease);}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.topbar{background:var(--ink-900);color:#fff;overflow:hidden;max-height:44px;transition:max-height .24s var(--ease);}
.site-header.is-scrolled .topbar{max-height:0;}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:44px;}
.topbar__brand{display:flex;align-items:center;gap:9px;font-family:var(--serif);font-size:15px;font-weight:700;letter-spacing:.02em;}
.topbar__brand em{width:8px;height:8px;border-radius:2px;background:var(--mint-500);display:block;}
.topbar__tools{display:flex;align-items:center;gap:14px;font-size:13px;}
.topbar__tools a{color:rgba(255,255,255,.75);transition:color .18s var(--ease);}
.topbar__tools a:hover{color:#fff;}
.topbar__cta{border:1px solid rgba(255,255,255,.3);border-radius:var(--r-sm);padding:3px 12px;height:26px;display:inline-flex;align-items:center;}
.topbar__cta:hover{background:rgba(255,255,255,.1);}
.icon-btn{width:32px;height:32px;border:0;border-radius:var(--r-sm);background:transparent;color:rgba(255,255,255,.75);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;transition:background-color .18s var(--ease),color .18s var(--ease);}
.icon-btn:hover{background:rgba(255,255,255,.12);color:#fff;}
.mainbar{background:var(--paper);border-bottom:1px solid var(--line);}
.mainbar__inner{display:flex;align-items:center;gap:22px;height:60px;}
.brand-mark{font-family:var(--serif);font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:26px;}
.nav-links a{position:relative;font-size:15px;font-weight:500;padding:6px 0;color:var(--text-1);transition:color .18s var(--ease);}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--brand-600);transition:width .2s var(--ease);}
.nav-links a:hover{color:var(--brand-600);}
.nav-links a:hover::after,.nav-links a.is-active::after{width:100%;}
.nav-links a.is-active{color:var(--brand-600);font-weight:600;}
.nav-search{position:relative;margin-left:auto;width:280px;}
.nav-search input{width:100%;height:40px;border:1px solid var(--line);background:var(--paper-2);border-radius:var(--r-sm);padding:0 42px 0 14px;font-size:14px;transition:border-color .18s var(--ease),box-shadow .18s var(--ease);}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search input:focus{outline:none;border-color:var(--brand-400);box-shadow:0 0 0 3px rgba(23,224,176,.22);}
.nav-search button{position:absolute;right:4px;top:50%;transform:translateY(-50%);width:34px;height:34px;border:0;background:transparent;border-radius:var(--r-sm);cursor:pointer;color:var(--text-3);transition:color .18s var(--ease),background-color .18s var(--ease);}
.nav-search button:hover{color:var(--brand-600);background:rgba(14,92,76,.08);}
.hot-terms{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;max-width:100%;}
.hot-terms::-webkit-scrollbar{display:none;}
.hot-terms a{flex:0 0 auto;font-size:13px;color:var(--text-2);border:1px solid var(--line);border-radius:999px;padding:4px 12px;white-space:nowrap;transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);}
.hot-terms a:hover{color:var(--brand-600);border-color:var(--brand-400);background:rgba(23,168,131,.08);}
.menu-toggle{display:none;margin-left:auto;width:44px;height:44px;border:1px solid var(--line);background:var(--paper-2);border-radius:var(--r-sm);cursor:pointer;color:var(--text-1);}

/* ===================== 面包屑 ===================== */
.crumb-bar{padding:20px 0 0;}
.crumb{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text-3);flex-wrap:wrap;}
.crumb a{color:var(--text-3);transition:color .18s var(--ease);}
.crumb a:hover{color:var(--brand-600);}
.crumb .sep{color:var(--line);}
.crumb .cur{color:var(--text-2);max-width:420px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}

/* ===================== 文章头 ===================== */
.article-head{padding:28px 0 32px;}
.article-head h1{
  font-family:var(--serif);font-size:42px;line-height:1.25;font-weight:700;letter-spacing:-.01em;
  max-width:900px;margin-bottom:22px;
}
.article-meta{display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding-bottom:22px;border-bottom:1px solid var(--line);font-size:13px;color:var(--text-3);}
.meta-pill{border:1px solid var(--brand-600);color:var(--brand-600);border-radius:var(--r-sm);padding:3px 10px;font-size:13px;}
.article-meta .share-group{margin-left:auto;display:flex;align-items:center;gap:8px;}
.share-group button{height:34px;padding:0 14px;border:1px solid var(--line);background:var(--paper-2);border-radius:var(--r-sm);font-size:13px;color:var(--text-2);cursor:pointer;display:inline-flex;align-items:center;gap:6px;transition:border-color .18s var(--ease),color .18s var(--ease);}
.share-group button:hover{border-color:var(--brand-400);color:var(--brand-600);}

/* ===================== 正文布局 ===================== */
.article-main{padding:40px 0 88px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:56px;align-items:start;}
.article-body{font-size:18px;line-height:1.9;color:var(--text-1);max-width:760px;}
.article-body p{margin:0 0 1.6em;}
.article-body h2{font-family:var(--serif);font-size:28px;line-height:1.35;font-weight:700;margin:48px 0 16px;}
.article-body h3{font-size:22px;font-weight:600;line-height:1.4;margin:36px 0 12px;}
.article-body ul,.article-body ol{margin:0 0 1.6em;padding-left:1.5em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:.5em;}
.article-body ul li::marker{color:var(--brand-600);}
.article-body ol li::marker{color:var(--brand-600);font-family:var(--mono);}
.article-body blockquote{margin:32px 0;padding:22px 24px;border-left:3px solid var(--brand-600);background:var(--paper-2);border-radius:0 var(--r-md) var(--r-md) 0;color:var(--text-2);font-size:17px;}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body figure{margin:30px 0;}
.article-body img{border-radius:var(--r-md);margin:0 auto;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;}
.article-body table{width:100%;border-collapse:collapse;margin:30px 0;font-size:15px;}
.article-body thead th{background:var(--ink-900);color:#fff;text-align:left;padding:0 16px;height:52px;font-weight:600;}
.article-body tbody td{padding:14px 16px;border-bottom:1px solid var(--line);}
.article-body tbody tr:nth-child(even){background:var(--paper-2);}
.article-body a{color:var(--brand-600);border-bottom:1px solid rgba(14,92,76,.35);transition:border-color .18s var(--ease),color .18s var(--ease);}
.article-body a:hover{border-color:var(--brand-600);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:44px 0;}
.article-body pre{background:var(--ink-900);color:#E9F3EF;padding:20px;border-radius:var(--r-md);overflow-x:auto;font-family:var(--mono);font-size:14px;line-height:1.7;}
.article-body code{font-family:var(--mono);font-size:.92em;background:rgba(14,92,76,.08);border-radius:4px;padding:2px 6px;}
.article-body pre code{background:transparent;padding:0;color:inherit;}

/* 空态 */
.empty-state{min-height:240px;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--paper-2);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;color:var(--text-3);text-align:center;padding:32px;}
.empty-state i{font-size:30px;color:var(--text-3);}
.empty-state p{font-size:15px;}
.empty-state a{font-size:15px;color:var(--brand-600);border-bottom:1px solid var(--brand-600);}

/* 文末 */
.article-tail{margin-top:56px;padding-top:28px;border-top:1px solid var(--line);}
.tag-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:28px;}
.tag-row span.label{font-size:13px;color:var(--text-3);}
.tag-row a{font-size:13px;color:var(--brand-600);border:1px solid var(--brand-600);border-radius:var(--r-sm);padding:4px 12px;transition:background-color .18s var(--ease),color .18s var(--ease);}
.tag-row a:hover{background:var(--brand-600);color:#fff;}
.prev-next{display:grid;grid-template-columns:1fr 1fr;gap:0;border-top:1px solid var(--line);}
.prev-next a{display:block;padding:20px 20px 20px 0;transition:background-color .18s var(--ease);}
.prev-next a+a{border-left:1px solid var(--line);padding-left:20px;text-align:right;}
.prev-next a:hover{background:var(--paper-2);}
.prev-next small{display:block;font-size:12px;color:var(--text-3);margin-bottom:6px;}
.prev-next strong{font-size:15px;font-weight:600;line-height:1.5;display:block;}

/* ===================== 侧栏 ===================== */
.sidebar{display:flex;flex-direction:column;gap:24px;position:sticky;top:96px;}
.side-card{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-md);padding:24px;box-shadow:var(--shadow-1);}
.side-card--cta{background:var(--ink-900);border-color:var(--ink-900);color:#fff;}
.side-card--cta h3{color:#fff;}
.side-card--cta p{color:rgba(255,255,255,.72);}
.side-card h3{font-family:var(--serif);font-size:19px;font-weight:700;margin-bottom:12px;}
.side-card p{font-size:14px;color:var(--text-2);line-height:1.8;margin-bottom:16px;}
.price-line{display:flex;align-items:baseline;gap:6px;font-family:var(--mono);color:var(--mint-500);font-size:28px;margin-bottom:6px;}
.price-line small{font-size:12px;color:rgba(255,255,255,.6);font-family:var(--sans);}
.side-list li{border-bottom:1px solid var(--line);}
.side-list li:last-child{border-bottom:0;}
.side-list a{display:flex;gap:12px;padding:14px 0;transition:color .18s var(--ease);}
.side-list a:hover{color:var(--brand-600);}
.side-list .idx{font-family:var(--mono);font-size:13px;color:var(--brand-600);padding-top:2px;}
.side-list .ttl{font-size:14px;line-height:1.6;}
.side-list .ttl em{display:block;font-style:normal;font-size:12px;color:var(--text-3);margin-top:4px;}
.cat-links{display:flex;flex-wrap:wrap;gap:10px;}
.cat-links a{font-size:13px;color:var(--text-2);border:1px solid var(--line);border-radius:var(--r-sm);padding:6px 12px;transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);}
.cat-links a:hover{color:var(--brand-600);border-color:var(--brand-400);background:rgba(23,168,131,.08);}

/* ===================== 相关推荐 ===================== */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rcard{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;box-shadow:var(--shadow-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease);display:flex;flex-direction:column;}
.rcard:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.rcard__media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--line);}
.rcard__media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.rcard:hover .rcard__media img{transform:scale(1.03);}
.rcard__body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rcard__body h3{font-size:18px;font-weight:600;line-height:1.45;}
.rcard__body p{font-size:14px;color:var(--text-2);line-height:1.75;}
.rcard__meta{margin-top:auto;font-size:12px;color:var(--text-3);display:flex;gap:12px;align-items:center;}
.pill{font-size:12px;color:var(--brand-600);border:1px solid var(--brand-600);border-radius:var(--r-sm);padding:2px 9px;}

/* ===================== FAQ ===================== */
.faq-wrap{display:grid;grid-template-columns:340px minmax(0,1fr);gap:56px;align-items:start;}
.faq-intro p{font-size:15px;color:var(--text-2);margin-top:16px;line-height:1.85;}
ul.accordion{border:0;background:transparent;margin:0;}
ul.accordion li.accordion-item{border:0;border-top:1px solid var(--line);background:transparent;}
ul.accordion li.accordion-item:last-child{border-bottom:1px solid var(--line);}
.accordion-title{position:relative;border:0;padding:20px 48px 20px 0;font-size:17px;font-weight:600;color:var(--text-1);background:transparent;transition:background-color .18s var(--ease);}
.accordion-title:hover{background:var(--paper);}
.accordion-title::before{content:"+";position:absolute;right:8px;top:50%;transform:translateY(-50%);font-family:var(--mono);font-size:20px;color:var(--brand-600);transition:transform .2s var(--ease);}
.accordion-item.is-active .accordion-title::before{content:"−";}
.accordion-content{padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--text-2);background:transparent;border:0;}
.accordion-item.is-active{border-left:3px solid var(--mint-500);padding-left:18px;}

/* ===================== CTA ===================== */
.cta-band{position:relative;background:var(--ink-900);color:#fff;overflow:hidden;}
.cta-band__bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;opacity:.28;}
.cta-band__inner{position:relative;display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:56px;align-items:center;padding:80px 0;}
.cta-band h2{font-family:var(--serif);font-size:36px;line-height:1.25;font-weight:700;margin-bottom:16px;}
.cta-band p{color:rgba(255,255,255,.75);font-size:16px;line-height:1.85;max-width:560px;}
.cta-form{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);border-radius:var(--r-md);padding:26px;backdrop-filter:blur(2px);}
.cta-form label{display:block;font-size:14px;color:rgba(255,255,255,.72);margin-bottom:8px;}
.cta-form input{width:100%;height:48px;border-radius:var(--r-sm);border:1px solid rgba(255,255,255,.2);background:rgba(10,21,18,.55);color:#fff;padding:0 14px;margin-bottom:16px;transition:border-color .18s var(--ease),box-shadow .18s var(--ease);}
.cta-form input::placeholder{color:rgba(255,255,255,.45);}
.cta-form input:focus{outline:none;border-color:var(--brand-400);box-shadow:0 0 0 3px rgba(23,224,176,.22);}
.cta-promise{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:20px;padding:0 0 56px;margin-top:-12px;}
.cta-promise div{position:relative;display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(255,255,255,.72);border-top:1px solid rgba(255,255,255,.12);padding-top:18px;}
.cta-promise i{color:var(--mint-500);}

/* ===================== 页脚 ===================== */
.site-footer{background:var(--ink-900);color:#fff;}
.site-footer__top{border-top:1px solid rgba(255,255,255,.12);padding:72px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:9px;font-family:var(--serif);font-size:17px;font-weight:700;margin-bottom:14px;}
.footer-brand em{width:8px;height:8px;border-radius:2px;background:var(--mint-500);display:block;}
.footer-col p{font-size:14px;color:rgba(255,255,255,.65);line-height:1.85;max-width:340px;}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:16px;color:#fff;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.65);transition:color .18s var(--ease);}
.footer-col ul a:hover{color:#fff;}
.footer-bottom{margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.55);}

/* ===================== 响应式 ===================== */
@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:40px;}
  .nav-search{width:220px;}
}
@media (max-width:1023px){
  .section{padding:72px 0;}
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .sidebar{position:static;flex-direction:row;flex-wrap:wrap;}
  .sidebar .side-card{flex:1 1 300px;}
  .article-head h1{font-size:36px;}
  .faq-wrap{grid-template-columns:minmax(0,1fr);gap:28px;}
  .cta-band__inner{grid-template-columns:minmax(0,1fr);gap:32px;padding:64px 0;}
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 24px;}
  .nav-search{display:none;}
  .menu-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .nav-links{
    position:absolute;left:0;right:0;top:100%;background:var(--paper-2);
    flex-direction:column;align-items:stretch;gap:0;padding:8px 24px 20px;
    border-bottom:1px solid var(--line);box-shadow:var(--shadow-2);
    transform:translateY(-12px);opacity:0;visibility:hidden;pointer-events:none;
    transition:transform .2s var(--ease),opacity .2s var(--ease),visibility .2s var(--ease);
  }
  .nav-links.is-open{transform:translateY(0);opacity:1;visibility:visible;pointer-events:auto;}
  .nav-links a{padding:14px 0;border-bottom:1px solid var(--line);font-size:16px;}
  .nav-links a::after{display:none;}
  .mainbar__inner{position:relative;}
  .hot-terms{max-width:52%;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .section-title{font-size:26px;}
  .article-head h1{font-size:30px;line-height:1.3;}
  .article-body{font-size:17px;}
  .article-body h2{font-size:24px;margin-top:40px;}
  .article-body h3{font-size:20px;}
  .article-meta{gap:12px;}
  .article-meta .share-group{margin-left:0;width:100%;}
  .prev-next{grid-template-columns:1fr;}
  .prev-next a+a{border-left:0;border-top:1px solid var(--line);padding-left:0;text-align:left;}
  .related-grid{grid-template-columns:1fr;}
  .cta-band h2{font-size:28px;}
  .cta-promise{grid-template-columns:1fr;gap:0;padding-bottom:40px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .brand-mark{font-size:15px;}
  .sidebar .side-card{flex:1 1 100%;}
}
@media (max-width:479px){
  .topbar__tools a:not(.topbar__cta){display:none;}
  .hot-terms{display:none;}
  .btn{padding:0 20px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --ink-900:#0A1512;
  --ink-700:#14302B;
  --brand-600:#0E5C4C;
  --brand-400:#17A883;
  --mint-500:#17E0B0;
  --ember-500:#FF6A3D;
  --paper:#F6F4EF;
  --paper-2:#FFFFFF;
  --line:#E2DDD3;
  --text-1:#1B1B18;
  --text-2:#5C5F58;
  --text-3:#8A8D86;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:20px;
  --shadow-1:0 1px 2px rgba(10,21,18,.06);
  --shadow-2:0 12px 32px rgba(10,21,18,.07);
  --ease:cubic-bezier(.2,.7,.3,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --sans:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --header-h:104px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text-1);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:0;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:700;letter-spacing:-.01em;line-height:1.2;}
p{margin:0;}
:focus-visible{outline:2px solid var(--mint-500);outline-offset:2px;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--dark{background:var(--ink-900);color:#EDEFEC;}
.section--dark h2,.section--dark h3{color:#fff;}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:60;background:var(--paper);transition:box-shadow .22s var(--ease),background .22s var(--ease);}
.site-header.is-stuck{box-shadow:var(--shadow-1);}
.brandbar{background:var(--ink-900);color:#E8ECE8;transition:height .22s var(--ease);}
.brandbar__inner{display:flex;align-items:center;justify-content:space-between;min-height:44px;gap:16px;}
.brand{display:flex;align-items:center;gap:9px;font-family:var(--serif);font-size:17px;font-weight:700;letter-spacing:.01em;color:#fff;}
.brand em{width:9px;height:9px;background:var(--mint-500);border-radius:2px;display:inline-block;flex:none;}
.brandbar__actions{display:flex;align-items:center;gap:8px;}
.mini-link{font-size:13px;color:#C9D2CC;padding:6px 10px;border-radius:var(--r-sm);transition:color .18s var(--ease),background .18s var(--ease);}
.mini-link:hover{color:#fff;background:rgba(255,255,255,.08);}
.mini-link--solid{background:var(--brand-600);color:#fff;padding:6px 14px;}
.mini-link--solid:hover{background:var(--brand-400);}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border:1px solid rgba(255,255,255,.18);border-radius:var(--r-sm);background:transparent;color:#E8ECE8;cursor:pointer;transition:border-color .18s var(--ease),color .18s var(--ease);}
.icon-btn:hover{border-color:var(--mint-500);color:#fff;}

.navbar{background:var(--paper);border-bottom:1px solid var(--line);transition:padding .22s var(--ease);}
.navbar__inner{display:flex;align-items:center;gap:24px;min-height:60px;}
.is-stuck .navbar__inner{min-height:52px;}
.nav-links{display:flex;align-items:center;gap:4px;flex:none;}
.nav-links a{position:relative;font-size:16px;color:var(--text-2);padding:18px 12px;transition:color .18s var(--ease);}
.nav-links a::after{content:"";position:absolute;left:12px;right:12px;bottom:12px;height:2px;background:var(--brand-600);transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);}
.nav-links a:hover{color:var(--text-1);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--text-1);font-weight:600;}
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-toggle{display:none;align-items:center;gap:8px;min-height:44px;padding:0 12px;background:transparent;border:1px solid var(--line);border-radius:var(--r-sm);cursor:pointer;font-size:14px;}
.nav-toggle:hover{border-color:var(--brand-400);}

.nav-search{display:flex;align-items:center;gap:0;flex:0 1 300px;margin-left:auto;background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden;transition:border-color .18s var(--ease),box-shadow .18s var(--ease);}
.nav-search:focus-within{border-color:var(--brand-400);box-shadow:0 0 0 3px rgba(23,224,176,.28);}
.nav-search input{flex:1;height:42px;border:0;background:transparent;padding:0 14px;font-size:14px;outline:none;}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search button{height:42px;padding:0 16px;border:0;background:var(--brand-600);color:#fff;font-size:14px;cursor:pointer;transition:background .18s var(--ease);}
.nav-search button:hover{background:var(--brand-400);}

.hot-tags{display:flex;align-items:center;gap:8px;overflow-x:auto;flex:1 1 auto;scrollbar-width:none;}
.hot-tags::-webkit-scrollbar{display:none;}
.hot-tags a{flex:none;font-size:13px;color:var(--brand-600);border:1px solid rgba(14,92,76,.35);border-radius:999px;padding:4px 12px;white-space:nowrap;transition:background .18s var(--ease),color .18s var(--ease);}
.hot-tags a:hover{background:rgba(14,92,76,.08);}

/* ============ 通栏 Hero ============ */
.hero-mag{position:relative;isolation:isolate;overflow:hidden;background:var(--ink-900);}
.hero-mag__bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2;}
.hero-mag__mask{position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(10,21,18,.80) 0%,rgba(10,21,18,.52) 42%,rgba(10,21,18,.88) 100%);}
.hero-mag__inner{padding:110px 0 84px;max-width:840px;}
.hero-mag__eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.16em;color:var(--mint-500);text-transform:uppercase;margin-bottom:20px;}
.hero-mag__eyebrow::before{content:"";width:26px;height:1px;background:var(--mint-500);display:inline-block;}
.hero-mag h1{font-size:56px;line-height:1.15;color:#fff;letter-spacing:-.01em;}
.hero-mag__sub{margin-top:20px;font-size:22px;line-height:1.7;color:#C8D2CC;max-width:620px;}
.hero-mag__cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero-mag__meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:38px;}
.hero-mag__meta li{font-size:13px;color:#B7C2BB;border:1px solid rgba(255,255,255,.22);border-radius:var(--r-sm);padding:6px 12px;font-family:var(--mono);letter-spacing:.02em;}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 28px;border-radius:var(--r-md);border:1px solid transparent;font-size:15px;font-weight:600;letter-spacing:.02em;cursor:pointer;transition:transform .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),filter .18s var(--ease);text-align:center;}
.btn--primary{background:var(--ember-500);color:#fff;}
.btn--primary:hover{filter:brightness(1.06);transform:translateY(-1px);}
.btn--primary:active{transform:translateY(0);}
.btn--ghost{background:transparent;border-color:rgba(255,255,255,.4);color:#fff;}
.btn--ghost:hover{background:rgba(255,255,255,.1);transform:translateY(-1px);}
.btn--line{background:transparent;border-color:var(--line);color:var(--text-1);}
.btn--line:hover{background:rgba(14,92,76,.08);border-color:var(--brand-400);transform:translateY(-1px);}
.btn--block{width:100%;}

/* ============ 板块标题 ============ */
.section-head{max-width:760px;margin-bottom:44px;}
.section-head__no{display:block;font-family:var(--mono);font-size:16px;color:var(--brand-600);letter-spacing:.1em;margin-bottom:12px;}
.section-head h2{font-size:36px;line-height:1.28;color:var(--text-1);}
.section-head__desc{margin-top:14px;font-size:16px;color:var(--text-2);line-height:1.85;}
.section--dark .section-head__no{color:var(--mint-500);}
.section--dark .section-head__desc{color:#B7C2BB;}

/* ============ 错位卡片组 ============ */
.mix-grid{display:grid;grid-template-columns:7fr 5fr;gap:28px;align-items:start;}
.card{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;transition:transform .22s var(--ease),box-shadow .22s var(--ease);}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.card__media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--ink-700);}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.card:hover .card__media img{transform:scale(1.03);}
.card__body{padding:28px 30px 30px;}
.card--lead .card__media{aspect-ratio:21/9;}
.card--lead .card__body{padding:34px 36px 38px;}
.card__title{font-family:var(--sans);font-size:22px;font-weight:600;line-height:1.4;color:var(--text-1);}
.card--lead .card__title{font-size:26px;}
.card__title a{background-image:linear-gradient(var(--brand-600),var(--brand-600));background-size:0 1px;background-repeat:no-repeat;background-position:0 100%;transition:background-size .24s var(--ease);}
.card:hover .card__title a{background-size:100% 1px;}
.card__text{margin-top:12px;font-size:15px;line-height:1.8;color:var(--text-2);}
.card__list{margin-top:18px;display:grid;gap:10px;}
.card__list li{position:relative;padding-left:20px;font-size:15px;color:var(--text-2);line-height:1.75;}
.card__list li::before{content:"";position:absolute;left:0;top:.68em;width:8px;height:1px;background:var(--brand-600);}
.card__meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:20px;font-size:13px;color:var(--text-3);}
.chip{display:inline-block;font-size:13px;color:var(--brand-600);border:1px solid rgba(14,92,76,.4);border-radius:var(--r-sm);padding:3px 10px;}
.chip--solid{background:var(--ember-500);border-color:var(--ember-500);color:#fff;}
.mix-side{display:grid;gap:28px;}
.mix-side .card:nth-child(2){margin-top:24px;}

/* ============ 图文交错 ============ */
.media-row{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center;padding:36px 0;border-top:1px solid var(--line);}
.media-row--rev .media-row__text{order:2;}
.media-row--rev .media-row__media{order:1;}
.media-row__media{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);aspect-ratio:16/9;background:var(--ink-700);}
.media-row__media img{width:100%;height:100%;object-fit:cover;}
.media-row__cap{margin-top:12px;font-size:13px;color:var(--text-3);text-align:center;}
.media-row__text h3{font-size:28px;line-height:1.35;}
.media-row__text p{margin-top:16px;font-size:16px;line-height:1.9;color:var(--text-2);}
.media-row__points{margin-top:22px;display:flex;flex-wrap:wrap;gap:10px;}

/* ============ Tabs ============ */
.tabs-wrap{margin-top:8px;}
.tabs{border:0;border-bottom:1px solid var(--line);background:transparent;}
.tabs::before,.tabs::after{display:none;}
.tabs-title > a{display:block;padding:16px 4px;margin-right:30px;font-size:15px;color:var(--text-2);background:transparent;border-bottom:2px solid transparent;transition:color .18s var(--ease),border-color .18s var(--ease);}
.tabs-title > a:hover{color:var(--text-1);}
.tabs-title > a:focus{background:transparent;}
.tabs-title > a[aria-selected="true"]{color:var(--text-1);font-weight:600;border-bottom:2px solid var(--brand-600);background:transparent;}
.tabs-content{margin-top:0;border:0;background:transparent;}
.tabs-panel{padding:36px 0 0;}
.tabs-panel__grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;}
.panel-box{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-md);padding:26px 28px;}
.panel-box h4{font-size:20px;font-family:var(--sans);font-weight:600;margin-bottom:12px;}
.panel-box p{font-size:15px;line-height:1.85;color:var(--text-2);}
.step-list{margin-top:16px;display:grid;gap:12px;counter-reset:step;}
.step-list li{position:relative;padding-left:38px;font-size:15px;color:var(--text-2);line-height:1.75;counter-increment:step;}
.step-list li::before{content:counter(step,decimal-leading-zero);position:absolute;left:0;top:0;font-family:var(--mono);font-size:13px;color:var(--brand-600);border:1px solid rgba(14,92,76,.35);border-radius:var(--r-sm);padding:1px 6px;}

/* ============ 横向滚动条带 ============ */
.strip{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:26px 0;}
.strip__inner{display:flex;align-items:stretch;gap:20px;overflow-x:auto;padding-bottom:6px;scrollbar-width:thin;}
.strip__lead{flex:none;display:flex;flex-direction:column;justify-content:center;padding-right:20px;border-right:1px solid var(--line);font-family:var(--mono);font-size:13px;color:var(--brand-600);letter-spacing:.12em;}
.strip__lead b{font-family:var(--serif);font-size:20px;color:var(--text-1);letter-spacing:0;margin-top:6px;}
.strip-card{flex:none;width:280px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-md);padding:18px 20px;transition:transform .2s var(--ease),border-color .2s var(--ease);}
.strip-card:hover{transform:translateY(-2px);border-color:var(--brand-400);}
.strip-card span{font-family:var(--mono);font-size:12px;color:var(--text-3);}
.strip-card h4{font-family:var(--sans);font-size:16px;font-weight:600;margin:8px 0 6px;line-height:1.5;}
.strip-card p{font-size:14px;color:var(--text-2);line-height:1.7;}

/* ============ 权益提示块 ============ */
.plan-note{display:grid;grid-template-columns:1.4fr 1fr;gap:36px;align-items:center;background:var(--ink-700);color:#E9EFEA;border-radius:var(--r-lg);padding:44px 46px;position:relative;overflow:hidden;}
.plan-note::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:36px 36px;pointer-events:none;}
.plan-note > *{position:relative;z-index:1;}
.plan-note h3{font-size:28px;color:#fff;}
.plan-note p{margin-top:14px;font-size:16px;color:#BCC7C0;line-height:1.85;}
.plan-note__side{display:grid;gap:14px;}
.plan-note__side li{display:flex;align-items:baseline;gap:12px;font-size:15px;color:#DCE3DD;}
.plan-note__side li b{font-family:var(--mono);font-size:20px;color:var(--mint-500);}
.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:34px;}
.fact{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-md);padding:24px 26px;}
.fact b{display:block;font-family:var(--mono);font-size:32px;color:var(--brand-600);letter-spacing:-.02em;}
.fact span{display:block;margin-top:8px;font-size:13px;letter-spacing:.06em;color:var(--text-3);}
.fact p{margin-top:10px;font-size:15px;color:var(--text-2);line-height:1.75;}

/* ============ FAQ ============ */
.accordion{border:0;background:transparent;}
.accordion .accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent;}
.accordion .accordion-title{display:block;padding:22px 48px 22px 0;border:0;font-size:18px;font-weight:600;color:var(--text-1);background:transparent;transition:color .18s var(--ease);}
.accordion .accordion-title::before{content:"+";right:8px;left:auto;top:50%;transform:translateY(-50%);font-family:var(--mono);font-size:22px;color:var(--brand-600);transition:transform .22s var(--ease);}
.accordion .accordion-title:hover{color:var(--brand-600);}
.accordion .accordion-content{padding:0 0 24px;border:0;background:transparent;color:var(--text-2);border-left:3px solid transparent;transition:border-color .22s var(--ease),padding .22s var(--ease);}
.accordion .accordion-content p{font-size:15px;line-height:1.85;}
.accordion .accordion-item.is-active > .accordion-title::before{content:"–";}
.accordion .accordion-item.is-active > .accordion-content{border-left:3px solid var(--mint-500);padding-left:18px;}

/* ============ 通栏 CTA ============ */
.cta-band{background:var(--brand-600);color:#fff;padding:72px 0;}
.cta-band__inner{display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:center;}
.cta-band h2{font-size:34px;color:#fff;}
.cta-band p{margin-top:16px;font-size:16px;color:#CFE4DE;line-height:1.85;}
.cta-form{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.22);border-radius:var(--r-lg);padding:28px 30px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;color:#D9E7E2;margin-bottom:8px;}
.field input{width:100%;height:48px;padding:0 14px;border:1px solid rgba(255,255,255,.28);border-radius:var(--r-sm);background:var(--paper-2);color:var(--text-1);outline:none;transition:border-color .18s var(--ease),box-shadow .18s var(--ease);}
.field input:focus{border-color:var(--brand-400);box-shadow:0 0 0 3px rgba(23,224,176,.35);}
.promises{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:36px;border-top:1px solid rgba(255,255,255,.2);padding-top:26px;}
.promises li{display:flex;align-items:center;gap:10px;font-size:14px;color:#D9E7E2;}
.promises svg{flex:none;width:20px;height:20px;stroke:var(--mint-500);fill:none;stroke-width:1.5;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:#C7CFC9;}
.site-footer__top{padding:72px 0 32px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding-top:32px;border-top:1px solid rgba(255,255,255,.12);}
.footer-brand{display:flex;align-items:center;gap:9px;font-family:var(--serif);font-size:18px;font-weight:700;color:#fff;margin-bottom:14px;}
.footer-brand em{width:9px;height:9px;background:var(--mint-500);border-radius:2px;display:inline-block;}
.footer-col p{font-size:14px;line-height:1.85;color:#9FAAA3;max-width:340px;}
.footer-col h4{font-family:var(--sans);font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:#A9B3AC;transition:color .18s var(--ease);}
.footer-col a:hover{color:var(--mint-500);}
.footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);font-size:13px;color:#8A948D;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .hero-mag h1{font-size:48px;}
  .section{padding:84px 0;}
}
@media (max-width:1023px){
  :root{--header-h:auto;}
  .nav-toggle{display:inline-flex;}
  .navbar__inner{flex-wrap:wrap;padding-top:10px;padding-bottom:10px;gap:14px;}
  .nav-links{position:absolute;left:0;right:0;top:100%;background:var(--paper-2);border-bottom:1px solid var(--line);box-shadow:var(--shadow-2);flex-direction:column;align-items:stretch;gap:0;padding:8px 24px 18px;display:none;}
  .nav-links.is-open{display:flex;}
  .nav-links a{padding:14px 0;border-bottom:1px solid var(--line);}
  .nav-links a::after{display:none;}
  .nav-links a.is-active{color:var(--brand-600);}
  .nav-search{order:3;flex:1 1 100%;margin-left:0;}
  .hot-tags{order:4;flex:1 1 100%;}
  .navbar{position:relative;}
  .hero-mag__inner{padding:84px 0 64px;}
  .hero-mag h1{font-size:40px;}
  .hero-mag__sub{font-size:19px;}
  .mix-grid{grid-template-columns:1fr;}
  .mix-side{grid-template-columns:1fr 1fr;}
  .mix-side .card:nth-child(2){margin-top:0;}
  .media-row{grid-template-columns:1fr;gap:24px;padding:32px 0;}
  .media-row--rev .media-row__text{order:1;}
  .media-row--rev .media-row__media{order:2;}
  .plan-note{grid-template-columns:1fr;padding:36px 32px;}
  .cta-band__inner{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .facts{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .section-head h2{font-size:28px;}
  .hero-mag h1{font-size:31px;}
  .hero-mag__sub{font-size:17px;}
  .hero-mag__inner{padding:64px 0 52px;}
  .card__body{padding:22px 20px 24px;}
  .card--lead .card__body{padding:24px 22px 26px;}
  .card--lead .card__title{font-size:22px;}
  .media-row__text h3{font-size:22px;}
  .tabs-title > a{margin-right:18px;font-size:14px;padding:14px 2px;}
  .tabs-panel__grid{grid-template-columns:1fr;}
  .facts{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;}
  .promises{grid-template-columns:1fr;}
  .cta-band{padding:56px 0;}
  .cta-band h2{font-size:26px;}
  .cta-form{padding:22px 20px;}
  .mix-side{grid-template-columns:1fr;}
  .strip-card{width:240px;}
}
@media (max-width:479px){
  .hero-mag__cta .btn{width:100%;}
  .brandbar__inner{min-height:40px;}
  .brand{font-size:15px;}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}