/* =========================================================
   GEOFlow 模板 22 · 蒂芙尼社论 (geoflow-template-22-tiffany-editorial)
   蒂芙尼蓝 #0ABAB5 + 墨绿 #123E38 + 金色点缀 · 编辑杂志风
   ========================================================= */
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@500;600;700;900&family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

:root{
  --tf-paper:#F7FAF9;
  --tf-paper-2:#EAF2F0;
  --tf-ink:#123E38;
  --tf-ink-soft:#4A6B66;
  --tf-line:#D3E4E1;
  --tf-accent:#0ABAB5;
  --tf-accent-deep:#078A86;
  --tf-gold:#B08A3E;
  --tf-gold-bright:#F0C97F;
  --tf-on-dark:#EAF6F4;
  --tf-on-dark-muted:#8FAEAA;
}
body.tf-body{
  font-family:'Noto Sans SC','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  background:var(--tf-paper);
  color:var(--tf-ink);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
.tf-serif{font-family:'Noto Serif SC','Songti SC','SimSun',serif}
.tf-wrap{max-width:1160px;margin:0 auto;padding:0 28px}
.tf-body a{text-decoration:none}

/* ===== top bar ===== */
.tf-topnote{background:var(--tf-ink);color:var(--tf-on-dark);font-size:12.5px;letter-spacing:.08em;text-align:center;padding:7px 16px}
.tf-topnote b{color:var(--tf-gold-bright);font-weight:500}
.tf-topnote a{color:inherit}

/* ===== nav ===== */
.tf-nav{position:sticky;top:0;z-index:50;background:rgba(247,250,249,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--tf-line)}
.tf-nav-in{display:flex;align-items:center;justify-content:space-between;height:68px}
.tf-logo{display:flex;align-items:center;gap:10px}
.tf-logo-mark{width:34px;height:34px}
.tf-logo-word{font-family:'Noto Serif SC',serif;font-weight:900;font-size:20px;letter-spacing:.06em;color:var(--tf-ink)}
.tf-logo-word span{color:var(--tf-accent)}
.tf-nav-links{display:flex;gap:30px;font-size:14.5px;color:var(--tf-ink-soft)}
.tf-nav-links a{position:relative;padding:6px 0}
.tf-nav-links a:hover,.tf-nav-links a.tf-on{color:var(--tf-ink)}
.tf-nav-links a:hover::after,.tf-nav-links a.tf-on::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--tf-accent)}
.tf-nav-cta{background:var(--tf-ink);color:#FBF7EE;padding:9px 22px;font-size:14px;letter-spacing:.05em;border:1px solid var(--tf-ink);border-radius:2px}
.tf-nav-cta:hover{background:var(--tf-accent);border-color:var(--tf-accent);color:#fff}
.tf-menu-toggle{display:none;background:none;border:none;font-size:24px;color:var(--tf-ink);cursor:pointer;line-height:1;padding:6px}
.tf-mobile-panel{display:none;border-top:1px solid var(--tf-line);background:var(--tf-paper);padding:14px 28px 20px}
.tf-mobile-panel a{display:block;padding:9px 0;color:var(--tf-ink-soft);font-size:15px}
.tf-mobile-open .tf-mobile-panel{display:block}

/* ===== hero ===== */
.tf-hero{border-bottom:1px solid var(--tf-line);overflow:hidden}
.tf-hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:40px;align-items:center;padding:76px 0 84px}
.tf-kicker{display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.32em;color:var(--tf-accent);border:1px solid var(--tf-accent);padding:6px 16px 6px 20px;margin-bottom:26px}
.tf-kicker::before{content:"";width:22px;height:1px;background:var(--tf-accent)}
.tf-hero h1{font-family:'Noto Serif SC',serif;font-size:clamp(36px,5vw,58px);font-weight:900;line-height:1.24;letter-spacing:.02em;margin:0 0 0}
.tf-hero h1 em{font-style:normal;color:var(--tf-accent);position:relative;z-index:0}
.tf-hero h1 em::after{content:"";position:absolute;left:0;right:0;bottom:6px;height:10px;background:rgba(10,186,181,.16);z-index:-1}
.tf-hero-sub{margin:26px 0 34px;font-size:16.5px;color:var(--tf-ink-soft);max-width:560px;font-weight:300}
.tf-hero-sub b{color:var(--tf-ink);font-weight:500}
.tf-hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.tf-btn{display:inline-flex;align-items:center;gap:10px;padding:14px 30px;font-size:15px;letter-spacing:.06em;transition:.2s;border-radius:2px}
.tf-btn-primary{background:var(--tf-accent);color:#fff;border:1px solid var(--tf-accent)}
.tf-btn-primary:hover{background:var(--tf-accent-deep);border-color:var(--tf-accent-deep);color:#fff}
.tf-btn-ghost{border:1px solid var(--tf-ink);color:var(--tf-ink)}
.tf-btn-ghost:hover{background:var(--tf-ink);color:var(--tf-paper)}
.tf-hero-proof{margin-top:30px;font-size:12.5px;color:var(--tf-ink-soft);letter-spacing:.04em}
.tf-hero-art{position:relative;min-height:380px}
.tf-big-32{font-family:'Noto Serif SC',serif;font-weight:900;font-size:300px;line-height:.9;position:absolute;top:8px;right:-10px;user-select:none;background:linear-gradient(180deg,var(--tf-accent) 0%,var(--tf-accent) 46%,#DCEBE7 46%,#DCEBE7 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.tf-stamp{position:absolute;top:18px;left:8px;width:92px;height:92px;border:2px solid var(--tf-accent);border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--tf-accent);transform:rotate(-12deg);font-family:'Noto Serif SC',serif}
.tf-stamp b{font-size:15px;font-weight:700;letter-spacing:.1em}
.tf-stamp span{font-size:9.5px;letter-spacing:.18em;margin-top:2px}
.tf-hero-card{position:absolute;bottom:24px;left:0;background:#fff;border:1px solid var(--tf-line);padding:22px 26px;box-shadow:6px 6px 0 var(--tf-paper-2);max-width:300px}
.tf-hero-card .no{font-size:11px;letter-spacing:.2em;color:var(--tf-gold);margin-bottom:6px}
.tf-hero-card .t{font-family:'Noto Serif SC',serif;font-weight:700;font-size:15px;margin-bottom:8px;color:var(--tf-ink)}
.tf-hero-card p{font-size:12.5px;color:var(--tf-ink-soft);line-height:1.7;margin:0}

/* ===== trust bar ===== */
.tf-trust{border-bottom:1px solid var(--tf-line);background:var(--tf-paper-2)}
.tf-trust-in{display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px 30px;padding:20px 0;font-size:13.5px;color:var(--tf-ink-soft)}
.tf-trust-in span{display:inline-flex;align-items:center;gap:9px}
.tf-trust-in svg{flex:none}

/* ===== sections ===== */
.tf-section{padding:88px 0}
.tf-sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:24px;margin-bottom:54px}
.tf-sec-kicker{font-size:12px;letter-spacing:.34em;color:var(--tf-accent);margin-bottom:14px}
.tf-sec-head h2{font-family:'Noto Serif SC',serif;font-size:clamp(28px,3.4vw,40px);font-weight:900;letter-spacing:.02em;color:var(--tf-ink);margin:0}
.tf-sec-head p{max-width:420px;font-size:14.5px;color:var(--tf-ink-soft);font-weight:300;margin:0}

/* method */
.tf-method{background:#fff;border-top:1px solid var(--tf-line);border-bottom:1px solid var(--tf-line)}
.tf-method-grid{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--tf-line);background:var(--tf-line);gap:1px}
.tf-step{background:#fff;padding:36px 28px 32px;transition:.25s}
.tf-step:hover{background:var(--tf-paper)}
.tf-step .num{font-family:'Noto Serif SC',serif;font-size:15px;color:var(--tf-gold);letter-spacing:.15em;margin-bottom:18px}
.tf-step h3{font-size:18.5px;font-weight:700;margin-bottom:12px;color:var(--tf-ink)}
.tf-step p{font-size:13.5px;color:var(--tf-ink-soft);font-weight:300;margin:0}
.tf-note{margin-top:18px;font-size:12.5px;color:var(--tf-ink-soft)}
.tf-note b{color:var(--tf-accent);font-weight:500}

/* stats */
.tf-stats{background:var(--tf-ink);color:var(--tf-on-dark)}
.tf-stats .tf-sec-kicker{color:var(--tf-gold-bright)}
.tf-stats h2{color:#F2FAF8}
.tf-stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.14)}
.tf-stat{background:var(--tf-ink);padding:40px 30px 34px}
.tf-stat .v{font-family:'Noto Serif SC',serif;font-size:52px;font-weight:900;color:#F2FAF8;line-height:1}
.tf-stat .v i{font-style:normal;font-size:22px;color:var(--tf-gold-bright);margin-left:4px}
.tf-stat .k{margin-top:12px;font-size:14px;color:#9FC4BF}
.tf-stats .tf-note{color:#6E9C96;margin-top:16px}

/* service 8V1 */
.tf-service-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
.tf-service-title{font-family:'Noto Serif SC',serif;font-size:clamp(28px,3.4vw,40px);font-weight:900;margin-bottom:22px;color:var(--tf-ink)}
.tf-flow{display:flex;flex-wrap:wrap;gap:10px}
.tf-flow .role{border:1px solid var(--tf-line);background:#fff;padding:12px 18px;font-size:14px;color:var(--tf-ink)}
.tf-flow .role b{color:var(--tf-accent)}
.tf-flow .plus{align-self:center;color:var(--tf-gold);font-family:'Noto Serif SC',serif}
.tf-service-list{margin-top:30px;display:grid;gap:14px;list-style:none;padding:0}
.tf-service-list li{display:flex;gap:12px;font-size:14.5px;color:var(--tf-ink-soft)}
.tf-service-list li::before{content:"—";color:var(--tf-accent);flex:none}
.tf-service-list li b{color:var(--tf-ink);font-weight:500}
.tf-photo-frame{border:1px solid var(--tf-line);background:#fff;padding:18px;box-shadow:8px 8px 0 var(--tf-paper-2)}
.tf-photo-frame svg{display:block;width:100%;height:auto}
.tf-photo-cap{display:flex;justify-content:space-between;margin-top:14px;font-size:12px;color:var(--tf-ink-soft);letter-spacing:.08em}

/* courses */
.tf-courses{background:var(--tf-paper-2);border-top:1px solid var(--tf-line);border-bottom:1px solid var(--tf-line)}
.tf-course-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.tf-course{background:#fff;border:1px solid var(--tf-line);padding:34px 30px;display:flex;flex-direction:column;transition:.25s;position:relative}
.tf-course:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(18,62,56,.12)}
.tf-course .tag{align-self:flex-start;font-size:11.5px;letter-spacing:.22em;color:var(--tf-accent);border:1px solid var(--tf-accent);padding:4px 12px;margin-bottom:20px}
.tf-course h3{font-size:21px;font-weight:700;margin-bottom:6px;color:var(--tf-ink)}
.tf-course .en{font-size:11px;letter-spacing:.26em;color:var(--tf-gold);margin-bottom:18px}
.tf-course ul{list-style:none;display:grid;gap:10px;font-size:13.5px;color:var(--tf-ink-soft);flex:1;padding:0;margin:0}
.tf-course ul li{display:flex;gap:9px}
.tf-course ul li::before{content:"·";color:var(--tf-accent);font-weight:900}
.tf-course .goal{margin-top:22px;padding-top:18px;border-top:1px dashed var(--tf-line);font-size:13px;color:var(--tf-ink)}
.tf-course .goal b{font-family:'Noto Serif SC',serif;font-size:17px;color:var(--tf-accent)}
.tf-course-wide{grid-column:1/-1;display:grid;grid-template-columns:1fr auto;align-items:center;gap:24px;background:var(--tf-ink);color:var(--tf-on-dark);border:none;padding:30px 36px}
.tf-course-wide:hover{box-shadow:none;transform:none}
.tf-course-wide h3{color:#F2FAF8;margin:0}
.tf-course-wide p{font-size:13.5px;color:#9FC4BF;flex:1;margin:8px 0 0}
.tf-course-wide .tf-btn{border-color:var(--tf-gold-bright);color:var(--tf-gold-bright)}
.tf-course-wide .tf-btn:hover{background:var(--tf-gold-bright);color:var(--tf-ink)}

/* ===== news center ===== */
.tf-cat-tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:38px}
.tf-cat-tab{border:1px solid var(--tf-line);background:#fff;padding:9px 22px;font-size:13.5px;color:var(--tf-ink-soft);letter-spacing:.06em;transition:.2s;border-radius:2px}
.tf-cat-tab:hover{border-color:var(--tf-accent);color:var(--tf-accent)}
.tf-cat-tab.tf-on{background:var(--tf-ink);color:#F2FAF8;border-color:var(--tf-ink)}
.tf-news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tf-news{background:#fff;border:1px solid var(--tf-line);display:flex;flex-direction:column;transition:.25s}
.tf-news:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(18,62,56,.12)}
.tf-news-thumb{height:128px;display:flex;align-items:center;justify-content:center;border-bottom:1px solid var(--tf-line);position:relative;overflow:hidden}
.tf-news-thumb .ch{font-family:'Noto Serif SC',serif;font-weight:900;font-size:60px}
.tf-news-thumb .no{position:absolute;top:12px;left:16px;font-size:10.5px;letter-spacing:.22em;color:var(--tf-ink-soft)}
.tf-news-body{padding:22px 26px 20px;flex:1;display:flex;flex-direction:column}
.tf-news-body .cat{font-size:11.5px;letter-spacing:.24em;color:var(--tf-accent)}
.tf-news-body h3{font-size:17px;line-height:1.6;margin:10px 0 16px;font-weight:700;flex:1;color:var(--tf-ink)}
.tf-news-body .foot{display:flex;justify-content:space-between;font-size:12px;color:var(--tf-ink-soft);letter-spacing:.08em;border-top:1px dashed var(--tf-line);padding-top:13px}
.tf-news-feat{grid-column:1/-1;display:grid;grid-template-columns:1.05fr 1fr;border:1px solid var(--tf-line);background:#fff;transition:.25s}
.tf-news-feat:hover{box-shadow:0 16px 40px rgba(18,62,56,.12)}
.tf-news-feat .thumb-side{position:relative;min-height:250px;display:flex;align-items:center;justify-content:center;border-right:1px solid var(--tf-line);overflow:hidden}
.tf-news-feat .big{font-family:'Noto Serif SC',serif;font-weight:900;font-size:150px;line-height:1}
.tf-news-feat .cnt{padding:38px 42px;display:flex;flex-direction:column;justify-content:center}
.tf-news-feat .cat{font-size:12px;letter-spacing:.28em;color:var(--tf-accent);margin-bottom:14px}
.tf-news-feat h3{font-size:26px;font-weight:900;line-height:1.45;margin-bottom:14px;color:var(--tf-ink)}
.tf-news-feat p{font-size:14px;color:var(--tf-ink-soft);font-weight:300;margin-bottom:22px}
.tf-news-feat .read{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:var(--tf-ink);letter-spacing:.08em;border-bottom:2px solid var(--tf-accent);padding-bottom:4px;align-self:flex-start}
.tf-news-feat .read:hover{color:var(--tf-accent)}

/* latest rows */
.tf-rows{display:grid;gap:0;border-top:1px solid var(--tf-line);margin-top:48px}
.tf-row{border-bottom:1px solid var(--tf-line)}
.tf-row a{display:flex;justify-content:space-between;align-items:baseline;gap:20px;padding:17px 2px;font-size:14.5px;color:var(--tf-ink);transition:.2s}
.tf-row a:hover{color:var(--tf-accent)}
.tf-row .d{flex:none;font-size:12px;color:var(--tf-ink-soft);letter-spacing:.06em}
.tf-rows-title{font-family:'Noto Serif SC',serif;font-size:18px;font-weight:700;color:var(--tf-ink);margin:48px 0 0}

/* ===== final cta ===== */
.tf-final{background:linear-gradient(115deg,#0ABAB5 0%,#078A86 100%);color:#fff;text-align:center;position:relative;overflow:hidden;padding:88px 0}
.tf-final::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 20% 30%,rgba(255,255,255,.12),transparent 40%),radial-gradient(circle at 80% 70%,rgba(255,255,255,.10),transparent 40%)}
.tf-final h2{font-family:'Noto Serif SC',serif;font-size:clamp(28px,3.6vw,42px);font-weight:900;color:#fff;margin:0}
.tf-final p{margin:16px auto 34px;font-size:15px;color:rgba(255,255,255,.85);max-width:520px;font-weight:300}
.tf-final .tf-btn{background:#fff;color:var(--tf-accent-deep);border-color:#fff;position:relative}
.tf-final .tf-btn:hover{background:var(--tf-ink);color:#fff;border-color:var(--tf-ink)}

/* ===== footer ===== */
.tf-footer{background:var(--tf-ink);color:var(--tf-on-dark-muted);font-size:13px}
.tf-foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:50px;padding:64px 0 44px}
.tf-foot-grid h4{color:#DCEEEB;font-family:'Noto Serif SC',serif;font-size:15px;margin-bottom:18px;letter-spacing:.1em}
.tf-foot-grid ul{list-style:none;display:grid;gap:10px;padding:0;margin:0}
.tf-foot-grid a{color:inherit}
.tf-foot-grid a:hover{color:#DCEEEB}
.tf-foot-grid p{margin:0}
.tf-foot-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:12px;color:#62867F}
.tf-foot-bottom a{color:inherit}
.tf-foot-bottom a:hover{color:#DCEEEB}

/* ===== list states: search / category / pagination ===== */
.tf-list-shell{padding:56px 0 88px}
.tf-breadcrumb{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--tf-ink-soft);margin-bottom:34px;flex-wrap:wrap}
.tf-breadcrumb a{color:var(--tf-ink-soft)}
.tf-breadcrumb a:hover{color:var(--tf-accent)}
.tf-list-head h1{font-family:'Noto Serif SC',serif;font-size:clamp(26px,3vw,36px);font-weight:900;color:var(--tf-ink);margin:0 0 10px}
.tf-list-head p{color:var(--tf-ink-soft);font-size:15px;max-width:720px;margin:0 0 30px;font-weight:300}
.tf-search-form{display:flex;gap:10px;max-width:560px;margin:0 0 44px;flex-wrap:wrap}
.tf-search-form input[type=search]{flex:1;min-width:220px;border:1px solid var(--tf-line);background:#fff;padding:12px 16px;font-size:14px;border-radius:2px;color:var(--tf-ink);outline:none}
.tf-search-form input[type=search]:focus{border-color:var(--tf-accent)}
.tf-search-form button{background:var(--tf-ink);color:#F2FAF8;border:none;padding:12px 26px;font-size:14px;border-radius:2px;cursor:pointer}
.tf-search-form button:hover{background:var(--tf-accent)}

/* ===== article / category / about shells (skin built-in classes) ===== */
.tf-body .article-shell{background:#fff;border:1px solid var(--tf-line);border-radius:2px}
.tf-body .article-hero-title{font-family:'Noto Serif SC',serif;font-weight:900;color:var(--tf-ink)}
.tf-body .article-section-chip{background:var(--tf-paper-2);color:var(--tf-accent-deep);border:1px solid var(--tf-line);border-radius:2px;padding:5px 14px}
.tf-body .article-section-chip:hover{border-color:var(--tf-accent);color:var(--tf-accent)}
.tf-body .pill-tag{background:var(--tf-paper-2);color:var(--tf-ink-soft);border:1px solid var(--tf-line);border-radius:2px}
.tf-body .article-summary-box{background:var(--tf-paper-2);border-left:3px solid var(--tf-accent)}
.tf-body .article-prose{color:#2E4A45}
.tf-body .article-prose h2,.tf-body .article-prose h3,.tf-body .article-prose h4{font-family:'Noto Serif SC',serif;color:var(--tf-ink)}
.tf-body .article-prose a{color:var(--tf-accent-deep)}
.tf-body .article-prose blockquote{border-left:3px solid var(--tf-accent);background:var(--tf-paper-2);padding:14px 20px;margin:1.2em 0;color:var(--tf-ink-soft)}
.tf-body .article-prose table{border:1px solid var(--tf-line)}
.tf-body .article-prose table th{background:var(--tf-paper-2);color:var(--tf-ink)}
.tf-body .article-prose table th,.tf-body .article-prose table td{border:1px solid var(--tf-line);padding:8px 12px}
.tf-body .article-prose code{background:var(--tf-paper-2);color:var(--tf-accent-deep)}
.tf-body .article-prose pre{background:var(--tf-ink);color:#DCEEEB}
.tf-body .article-prose pre code{background:none;color:inherit}
.tf-related{border:1px solid var(--tf-line);background:#fff;padding:28px 30px;margin-top:32px}
.tf-related h3{font-family:'Noto Serif SC',serif;font-size:17px;font-weight:700;color:var(--tf-ink);margin:0 0 18px}
.tf-related ul{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.tf-related li a{display:flex;gap:14px;align-items:baseline;color:var(--tf-ink);font-size:14.5px}
.tf-related li a:hover{color:var(--tf-accent)}
.tf-related .rank{flex:none;width:24px;height:24px;border:1px solid var(--tf-line);border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:11px;color:var(--tf-gold);font-family:'Noto Serif SC',serif}

/* pagination skin */
.tf-pagination{margin-top:48px}
.tf-pagination nav[role=navigation]{display:flex;justify-content:center;gap:6px;flex-wrap:wrap}
.tf-pagination nav[role=navigation] a,
.tf-pagination nav[role=navigation] span{display:inline-flex;align-items:center;justify-content:center;min-width:40px;height:40px;padding:0 14px;font-size:14px;border:1px solid var(--tf-line);background:#fff;color:var(--tf-ink-soft);border-radius:2px;margin-bottom:0}
.tf-pagination nav[role=navigation] span.dots,.tf-pagination nav[role=navigation] span[aria-hidden=true]{border:none;background:none}
.tf-pagination nav[role=navigation] .current{background:var(--tf-ink);color:#F2FAF8;border-color:var(--tf-ink)}
.tf-pagination nav[role=navigation] a:hover{border-color:var(--tf-accent);color:var(--tf-accent)}

/* empty state */
.tf-empty{border:1px solid var(--tf-line);background:#fff;padding:64px 30px;text-align:center}
.tf-empty h3{font-family:'Noto Serif SC',serif;font-size:20px;color:var(--tf-ink);margin:0 0 10px}
.tf-empty p{color:var(--tf-ink-soft);font-size:14px;margin:0 0 22px}

/* sticky ad skin */
.tf-body .article-sticky-ad{background:#fff;border:1px solid var(--tf-line);box-shadow:0 14px 34px rgba(18,62,56,.14)}
.tf-body .article-sticky-ad__badge{background:var(--tf-accent);color:#fff}
.tf-body .article-sticky-ad__button{background:var(--tf-ink);color:#fff;border-radius:2px}
.tf-body .article-sticky-ad__button:hover{background:var(--tf-accent)}

/* ===== responsive ===== */
@media(max-width:960px){
  .tf-hero-grid,.tf-service-grid{grid-template-columns:1fr}
  .tf-method-grid,.tf-stats-grid{grid-template-columns:repeat(2,1fr)}
  .tf-course-grid{grid-template-columns:1fr}
  .tf-news-grid{grid-template-columns:1fr}
  .tf-news-feat{grid-template-columns:1fr}
  .tf-news-feat .thumb-side{min-height:150px;border-right:none;border-bottom:1px solid var(--tf-line)}
  .tf-foot-grid{grid-template-columns:1fr}
  .tf-nav-links{display:none}
  .tf-menu-toggle{display:block}
  .tf-big-32{font-size:190px}
  .tf-hero-art{min-height:300px}
  .tf-sec-head{flex-direction:column;align-items:flex-start}
}
@media(max-width:560px){
  .tf-method-grid,.tf-stats-grid{grid-template-columns:1fr}
  .tf-topnote{font-size:11px}
}