:root{
  --bg:#F5F7FA;
  --surface:#FFFFFF;
  --ink:#0B1220;
  --ink-2:#1D2939;
  --muted:#667085;
  --line:#E4E7EC;
  --line-strong:#D0D5DD;
  --accent:#C8431F;
  --accent-dark:#A83617;
  --accent-bright:#E4572E;
  --accent-soft:#FFF1EC;
  --teal:#0F766E;
  --teal-soft:#E6F4F1;
  --dark:#0B1220;
  --radius:20px;
  --shadow:0 20px 50px rgba(11,18,32,.08);
  --sans:"Inter","PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--sans);font-size:16px;line-height:1.65;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
::selection{background:var(--accent);color:#fff}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid rgba(200,67,31,.38);outline-offset:3px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--dark);color:#fff;padding:10px 14px;z-index:99}
.skip-link:focus{left:12px;top:12px}
.container{width:min(1180px,calc(100% - 48px));margin:0 auto;position:relative;z-index:1}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 22px;border-radius:10px;border:1px solid transparent;
  font-family:var(--sans);font-size:14px;font-weight:600;line-height:1;cursor:pointer;
  transition:transform .18s ease,background .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 24px rgba(228,87,46,.24)}
.btn-primary:hover{background:var(--accent-dark)}
.btn-dark{background:var(--dark);color:#fff}
.btn-dark:hover{background:#162033}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--ink)}
.btn-ghost:hover{border-color:var(--ink)}
.btn-light{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.24);color:#fff}
.btn-light:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.4)}
.btn-small{padding:10px 16px;font-size:13px;border-radius:8px}

/* header */
.site-header{
  position:sticky;top:0;z-index:40;
  background:rgba(255,255,255,.82);backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(228,231,236,.8);
}
.header-inner{display:flex;align-items:center;gap:32px;min-height:72px}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:11px;background:var(--accent);color:#fff;
  display:grid;place-items:center;font-size:20px;font-weight:700;
  box-shadow:0 8px 18px rgba(228,87,46,.26);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:18px;letter-spacing:-.01em}
.brand-text small{font-size:10.5px;color:var(--muted);letter-spacing:.14em;margin-top:2px}
.nav{display:flex;align-items:center;gap:26px;margin-left:auto;font-size:14px;color:var(--ink-2)}
.nav a{position:relative;padding:6px 0;white-space:nowrap}
.nav a:hover,.nav a[aria-current="page"]{color:var(--accent)}
.nav a[aria-current="page"]::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--accent);border-radius:2px}
.header-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{display:none;width:40px;height:38px;border:1px solid var(--line-strong);background:transparent;border-radius:8px;cursor:pointer}
.nav-toggle span{display:block;width:16px;height:2px;background:var(--ink);margin:4px auto;border-radius:2px}

/* hero */
.hero{
  background:
    radial-gradient(760px 420px at 78% 4%, rgba(228,87,46,.22), transparent 62%),
    radial-gradient(680px 380px at 6% 92%, rgba(15,118,110,.18), transparent 60%),
    var(--dark);
  color:#fff;position:relative;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  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:64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 90%);
}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:54px;align-items:center;padding:82px 0 76px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:11px;font-weight:600;letter-spacing:.16em;color:var(--accent);text-transform:uppercase}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.hero .eyebrow{color:#FFB59F}
.hero .eyebrow::before{background:#FFB59F}
.hero h1{font-size:clamp(44px,5.8vw,76px);line-height:1.06;letter-spacing:-.045em;margin:18px 0 20px;font-weight:700;text-wrap:balance}
.hero h1 em{font-style:normal;color:#FF8A66}
.hero-sub{max-width:610px;color:rgba(255,255,255,.68);font-size:17px;line-height:1.8;margin:0 0 28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:22px}
.hero-chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{display:inline-flex;align-items:center;gap:6px;padding:7px 11px;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.06);border-radius:999px;font-size:11.5px;color:rgba(255,255,255,.72)}
.chip::before{content:"";width:4px;height:4px;border-radius:50%;background:#5EEAD4}

/* hero panel */
.course-panel{
  position:relative;background:rgba(255,255,255,.065);border:1px solid rgba(255,255,255,.14);
  border-radius:24px;padding:26px 26px 22px;backdrop-filter:blur(18px);
  box-shadow:0 28px 70px rgba(0,0,0,.28);
}
.course-panel::before{
  content:"";position:absolute;right:-40px;top:-40px;width:160px;height:160px;
  border:1px solid rgba(255,255,255,.14);border-radius:50%;
}
.panel-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}
.panel-kicker{font-size:10.5px;letter-spacing:.16em;color:#FFB59F;font-weight:600}
.panel-badge{font-size:10.5px;color:rgba(255,255,255,.56);border:1px solid rgba(255,255,255,.16);padding:4px 8px;border-radius:999px}
.panel-title{font-size:22px;line-height:1.4;margin:0 0 18px;font-weight:600;letter-spacing:-.01em}
.panel-list{border-top:1px solid rgba(255,255,255,.12)}
.panel-row{display:grid;grid-template-columns:32px 1fr auto;gap:10px;align-items:center;padding:11px 0;border-bottom:1px solid rgba(255,255,255,.1)}
.panel-row .n{width:24px;height:24px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.08);font-size:10.5px;color:#FFB59F}
.panel-row .t{font-size:13px;color:rgba(255,255,255,.86)}
.panel-row .w{font-size:10.5px;color:rgba(255,255,255,.4);letter-spacing:.08em}
.panel-foot{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;margin-top:18px}
.panel-price{font-size:30px;font-weight:700;letter-spacing:-.03em}
.panel-price small{font-size:11px;color:rgba(255,255,255,.5);font-weight:400;margin-left:4px}
.panel-meta{font-size:10.5px;color:rgba(255,255,255,.44);margin-top:4px}
.panel-link{font-size:12px;color:#FFB59F;border-bottom:1px solid rgba(255,181,159,.4);padding-bottom:2px;white-space:nowrap}
.float-chip{position:absolute;background:#fff;color:var(--ink);border-radius:999px;padding:8px 12px;font-size:11px;font-weight:600;box-shadow:0 10px 24px rgba(0,0,0,.18)}
.float-chip.one{right:-18px;top:34px}
.float-chip.two{left:-18px;bottom:44px;display:flex;align-items:center;gap:6px}
.float-chip.two::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--teal)}

/* credential bar */
.credential-wrap{position:relative;z-index:2;margin-top:-28px}
.credential-bar{
  background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);
  display:grid;grid-template-columns:repeat(4,1fr);overflow:hidden;
}
.credential-item{padding:17px 20px;border-right:1px solid var(--line);display:flex;align-items:center;gap:10px;transition:background .18s ease}
.credential-item:last-child{border-right:0}
a.credential-item:hover{background:#FFF8F5}
.credential-item .ic{width:30px;height:30px;border-radius:9px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;flex:0 0 auto}
.credential-item b{display:block;font-size:12px;font-weight:600;line-height:1.3}
.credential-item small{display:block;font-size:10.5px;color:var(--muted);line-height:1.35;margin-top:2px}

/* sections */
.section{padding:84px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:30px}
.section-head h2{font-size:clamp(28px,3.4vw,40px);line-height:1.2;letter-spacing:-.035em;margin:10px 0 0;font-weight:700;text-wrap:balance}
.section-head p{max-width:470px;color:var(--muted);font-size:15px;line-height:1.75;margin:0}
.section-link{font-size:13px;font-weight:600;color:var(--accent);white-space:nowrap}

/* fit cards */
.fit-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.fit-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:transform .2s ease,box-shadow .2s ease}
.fit-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.fit-icon{width:42px;height:42px;border-radius:12px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;margin-bottom:18px}
.fit-card h3{font-size:18px;line-height:1.4;margin:0 0 8px;font-weight:650;letter-spacing:-.01em}
.fit-card p{color:var(--muted);font-size:14px;line-height:1.75;margin:0}
.fit-note{font-size:12px;color:var(--muted);margin-top:14px}

/* weeks */
.weeks{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.week-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;border-top:3px solid var(--accent)}
.week-card .num{font-size:11px;color:var(--accent);font-weight:700;letter-spacing:.12em}
.week-card h3{font-size:19px;margin:14px 0 8px;font-weight:650;letter-spacing:-.01em}
.week-card ul{list-style:none;margin:0;padding:0}
.week-card li{font-size:13.5px;color:var(--muted);line-height:1.75;padding-left:12px;position:relative}
.week-card li::before{content:"";position:absolute;left:0;top:.72em;width:4px;height:4px;border-radius:50%;background:var(--line-strong)}

/* takeaways */
.takeaways{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.takeaway{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;min-height:170px}
.takeaway:first-child{background:var(--dark);border-color:var(--dark);color:#fff}
.takeaway .k{font-size:11px;color:var(--accent);font-weight:700;letter-spacing:.12em;margin-bottom:14px}
.takeaway:first-child .k{color:#FFB59F}
.takeaway h3{font-size:17px;line-height:1.4;margin:0 0 8px;font-weight:650}
.takeaway p{font-size:13.5px;line-height:1.75;color:var(--muted);margin:0}
.takeaway:first-child p{color:rgba(255,255,255,.6)}

/* teachers */
.teachers{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.teacher{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.teacher-top{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.avatar{width:54px;height:54px;border-radius:50%;background:linear-gradient(135deg,var(--accent-soft),#fff);border:1px solid var(--line);display:grid;place-items:center;font-size:20px;font-weight:700;color:var(--accent)}
.teacher h3{font-size:17px;margin:0 0 2px;font-weight:650}
.teacher .role{font-size:11.5px;color:var(--muted)}
.teacher p{font-size:13.5px;line-height:1.75;color:var(--muted);margin:0}

/* proof */
.proof{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.proof-item{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 44px 22px 22px;display:block;position:relative;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.proof-item::after{content:"→";position:absolute;right:18px;top:20px;color:var(--accent);font-size:16px;line-height:1}
a.proof-item:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#F2C9BC}
.proof-item .ic{width:36px;height:36px;border-radius:10px;background:var(--teal-soft);color:var(--teal);display:grid;place-items:center;margin-bottom:16px}
.proof-item h3{font-size:15px;margin:0 0 6px;font-weight:650}
.proof-item p{font-size:13px;line-height:1.7;color:var(--muted);margin:0}

/* compact verification strip */
.verify-strip{display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px;padding:18px 0 0;margin-top:18px;border-top:1px solid var(--line);font-size:12.5px;color:var(--muted)}
.verify-strip b{color:var(--ink);font-weight:600}
.verify-strip a{color:var(--accent);border-bottom:1px solid rgba(200,67,31,.32);padding-bottom:2px}
.verify-strip a:hover{border-color:var(--accent)}

/* pre-course */
.precourse{display:grid;grid-template-columns:150px 1fr auto;gap:22px;align-items:center;background:var(--dark);color:#fff;border-radius:16px;padding:20px 24px;margin-bottom:18px}
.precourse-label{font-size:10.5px;font-weight:700;letter-spacing:.12em;color:#FFB59F}
.precourse-body h3{font-size:17px;margin:0 0 4px;font-weight:650}
.precourse-body p{font-size:12.5px;line-height:1.7;color:rgba(255,255,255,.58);margin:0}
.precourse-meta{font-size:10.5px;color:rgba(255,255,255,.46);text-align:right;white-space:nowrap}

/* course page */
.course-hero{padding:64px 0 40px;border-bottom:1px solid var(--line)}
.course-hero h1{font-size:clamp(34px,4.6vw,54px);line-height:1.16;letter-spacing:-.035em;margin:14px 0 14px;font-weight:700;text-wrap:balance}
.course-hero p{max-width:680px;color:var(--muted);font-size:15px;line-height:1.8;margin:0}
.course-facts{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:16px;background:#fff;margin-top:28px;overflow:hidden}
.course-fact{padding:18px 20px;border-right:1px solid var(--line)}
.course-fact:last-child{border-right:0}
.course-fact b{display:block;font-size:23px;letter-spacing:-.02em;line-height:1.2}
.course-fact small{display:block;color:var(--muted);font-size:11px;margin-top:4px}
.course-block{background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px 30px}
.course-block h2{font-size:26px;line-height:1.3;margin:0 0 8px;font-weight:650;letter-spacing:-.02em}
.course-block > p{color:var(--muted);font-size:13px;line-height:1.75;margin:0 0 20px}
.boundary-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:0 26px}
.boundary-list li{display:flex;gap:12px;padding:11px 0;border-bottom:1px solid var(--line);font-size:13px;line-height:1.65;color:var(--ink-2)}
.boundary-list li:nth-child(1),.boundary-list li:nth-child(2){padding-top:0}
.boundary-list .n{color:var(--accent);font-weight:700;font-size:11px;flex:0 0 auto;padding-top:2px}
.assessment{width:100%;border-collapse:collapse;font-size:13px}
.assessment th,.assessment td{text-align:left;padding:11px 12px;border-bottom:1px solid var(--line)}
.assessment th{font-size:11px;letter-spacing:.1em;color:var(--muted);font-weight:600;background:#FAFBFC}
.assessment td:last-child,.assessment th:last-child{text-align:right}
.teacher-roles{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:18px}
.teacher-role{border:1px solid var(--line);border-radius:14px;padding:18px 20px;background:#fff}
.teacher-role h3{font-size:15px;margin:0 0 4px;font-weight:650}
.teacher-role p{font-size:12.5px;line-height:1.7;color:var(--muted);margin:0}
.course-cta{display:flex;align-items:center;justify-content:space-between;gap:20px;border:1px solid var(--line);border-radius:18px;padding:24px 28px;background:#fff;margin-top:24px}
.course-cta p{margin:0;font-size:13px;color:var(--muted)}
.course-cta .actions{display:flex;gap:10px;flex-wrap:wrap}

@media (max-width:1000px){
  .precourse{grid-template-columns:1fr;gap:8px}
  .precourse-meta{text-align:left}
  .course-facts{grid-template-columns:1fr 1fr}
  .course-fact:nth-child(2){border-right:0}
  .course-fact:nth-child(1),.course-fact:nth-child(2){border-bottom:1px solid var(--line)}
}
@media (max-width:720px){
  .course-facts{grid-template-columns:1fr 1fr}
  .boundary-list{grid-template-columns:1fr}
  .boundary-list li:nth-child(2){padding-top:11px}
  .teacher-roles{grid-template-columns:1fr}
  .course-cta{flex-direction:column;align-items:flex-start}
  .course-block{padding:22px 20px}
}
.inline-cta{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-top:28px;padding:18px 22px;border:1px solid var(--line);border-radius:14px;background:#fff}
.inline-cta p{margin:0;font-size:13px;color:var(--muted)}
.inline-cta .actions{display:flex;gap:10px;flex-wrap:wrap}

/* price */
.price-card{
  background:linear-gradient(135deg,#0B1220 0%,#142033 100%);color:#fff;border-radius:24px;
  padding:34px 36px;display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center;
  box-shadow:0 30px 60px rgba(11,18,32,.18);position:relative;overflow:hidden;
}
.price-card::after{content:"";position:absolute;right:-80px;top:-80px;width:260px;height:260px;border:1px solid rgba(255,255,255,.12);border-radius:50%}
.price-main .label{font-size:11px;color:#FFB59F;font-weight:700;letter-spacing:.14em}
.price-main .amount{font-size:56px;font-weight:700;letter-spacing:-.04em;line-height:1;margin:10px 0 6px}
.price-main .amount small{font-size:13px;font-weight:400;color:rgba(255,255,255,.5);margin-left:6px}
.price-main .desc{font-size:12.5px;color:rgba(255,255,255,.58);margin:0 0 18px}
.price-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:6px 18px}
.price-list li{font-size:12px;color:rgba(255,255,255,.74);padding-left:12px;position:relative}
.price-list li::before{content:"";position:absolute;left:0;top:.7em;width:4px;height:4px;border-radius:50%;background:#5EEAD4}
.price-side{border-left:1px solid rgba(255,255,255,.12);padding-left:32px}
.price-side h3{font-size:20px;margin:0 0 8px;font-weight:600}
.price-side p{font-size:12.5px;line-height:1.75;color:rgba(255,255,255,.58);margin:0 0 18px}
.price-side .btn{width:100%}
.price-side .fine{font-size:10.5px;color:rgba(255,255,255,.4);margin-top:10px;text-align:center}

/* faq */
.faq{max-width:920px}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px 0;font-size:15px;font-weight:600}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:20px;font-weight:400;color:var(--accent)}
.faq details[open] summary::after{content:"−"}
.faq .answer{padding:0 0 18px;color:var(--muted);font-size:14px;line-height:1.8}

/* cta */
.cta{background:var(--accent);color:#fff;border-radius:24px;padding:40px 42px;display:flex;align-items:center;justify-content:space-between;gap:30px;margin:0 0 84px}
.cta h2{font-size:clamp(24px,2.8vw,32px);line-height:1.25;margin:0 0 6px;font-weight:700;letter-spacing:-.02em;text-wrap:balance}
.cta p{font-size:13px;color:rgba(255,255,255,.76);margin:0}
.cta .btn{background:#fff;color:var(--accent);border-color:#fff;flex:0 0 auto}
.cta-form{display:flex;align-items:center;gap:6px;background:#fff;border-radius:12px;padding:6px;min-width:320px}
.cta-form input{flex:1;min-width:0;border:0;outline:0;padding:8px 10px;font-family:var(--sans);font-size:13px;color:var(--ink);background:transparent}
.cta-form input::placeholder{color:#98A2B3}
.cta-form .btn{padding:10px 14px;border-radius:8px;box-shadow:none}
.cta-action{display:flex;flex-direction:column;align-items:flex-end;gap:4px}
.cta-note{font-size:10.5px;color:rgba(255,255,255,.72);min-height:14px}

/* footer */
.site-footer{background:#0B1220;color:rgba(255,255,255,.62);padding:54px 0 30px}
.footer-grid{display:grid;grid-template-columns:1.4fr .7fr .7fr .9fr;gap:34px;margin-bottom:34px}
.footer-brand b{color:#fff;font-size:17px;display:block;margin-bottom:8px}
.footer-brand p{font-size:12px;line-height:1.8;max-width:330px;margin:0 0 10px}
.footer-col h4{font-size:10.5px;letter-spacing:.14em;color:#FFB59F;margin:0 0 12px;font-weight:600}
.footer-col a{display:block;font-size:12px;padding:4px 0;color:rgba(255,255,255,.62)}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:16px;font-size:10.5px;line-height:1.8;color:rgba(255,255,255,.42)}
.footer-bottom strong{color:rgba(255,255,255,.72);font-weight:400}
.footer-bottom .risk{margin-top:6px}

/* columns page */
.page-hero{padding:68px 0 42px}
.page-hero h1{font-size:clamp(38px,5vw,62px);line-height:1.08;letter-spacing:-.04em;margin:14px 0 14px;font-weight:700;text-wrap:balance}
.page-hero p{max-width:620px;color:var(--muted);font-size:15px;line-height:1.8;margin:0}
.editorial-strip{display:flex;flex-wrap:wrap;gap:10px 24px;padding:16px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:12px;color:var(--muted)}
.editorial-strip span{display:inline-flex;align-items:center;gap:7px}
.editorial-strip span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent)}
.filters{display:flex;flex-wrap:wrap;gap:8px;margin:28px 0 28px}
.filter{border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 14px;font-family:var(--sans);font-size:12.5px;color:var(--muted);cursor:pointer;transition:all .18s ease}
.filter:hover{border-color:var(--line-strong);color:var(--ink)}
.filter[aria-selected="true"]{background:var(--dark);border-color:var(--dark);color:#fff}
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.article-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;min-height:230px;transition:transform .2s ease,box-shadow .2s ease}
.article-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.article-card .tag{font-size:10.5px;font-weight:700;letter-spacing:.12em;color:var(--accent);margin-bottom:14px}
.article-card h3{font-size:19px;line-height:1.45;margin:0 0 8px;font-weight:650;letter-spacing:-.01em}
.article-card p{font-size:12.5px;line-height:1.75;color:var(--muted);margin:0 0 18px}
.article-card .meta{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);display:flex;justify-content:space-between;font-size:10.5px;color:var(--muted)}
.article-card.featured{grid-column:span 2;background:var(--dark);color:#fff;border-color:var(--dark)}
.article-card.featured .tag{color:#FFB59F}
.article-card.featured p{color:rgba(255,255,255,.6)}
.article-card.featured .meta{border-color:rgba(255,255,255,.12);color:rgba(255,255,255,.44)}
.article-card.featured h3{font-size:26px;line-height:1.3}

/* credentials page */
.credentials-page{background:var(--bg)}
.cert-stack{display:grid;gap:22px}
.cert-card{display:grid;grid-template-columns:1.35fr .65fr;background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden}
.cert-media{background:#F2F4F7;padding:14px;border-right:1px solid var(--line);display:flex;align-items:center}
.cert-media img{width:100%;height:auto;border-radius:10px;border:1px solid var(--line);background:#fff}
.cert-body{padding:26px 28px}
.cert-body h2{font-size:22px;line-height:1.3;margin:0 0 6px;font-weight:650;letter-spacing:-.01em}
.cert-body .sub{font-size:11px;color:var(--muted);letter-spacing:.08em;margin:0 0 16px}
.fact-list{list-style:none;margin:0 0 18px;padding:0}
.fact-list li{display:grid;grid-template-columns:104px 1fr;gap:12px;padding:8px 0;border-bottom:1px solid var(--line);font-size:12.5px;line-height:1.6}
.fact-list li:last-child{border-bottom:0}
.fact-list span:first-child{color:var(--muted)}
.cert-note{background:var(--accent-soft);border:1px solid #F7D5C9;border-radius:14px;padding:18px 20px;font-size:12.5px;line-height:1.75;color:var(--ink-2);margin-top:22px}
.cert-note b{color:var(--accent)}
.cert-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}

@media (max-width:1000px){
  .cert-card{grid-template-columns:1fr}
  .cert-media{border-right:0;border-bottom:1px solid var(--line)}
}
@media (max-width:720px){
  .cert-body{padding:20px}
  .fact-list li{grid-template-columns:86px 1fr;font-size:12px}
}

/* responsive */
@media (max-width:1000px){
  .hero-grid{grid-template-columns:1fr;gap:36px;padding:64px 0 58px}
  .course-panel{max-width:560px}
  .credential-wrap{margin-top:-20px}
  .credential-bar{grid-template-columns:1fr 1fr}
  .credential-item:nth-child(2){border-right:0}
  .credential-item:nth-child(1),.credential-item:nth-child(2){border-bottom:1px solid var(--line)}
  .fit-grid,.teachers,.proof{grid-template-columns:1fr 1fr}
  .weeks,.takeaways{grid-template-columns:1fr 1fr}
  .price-card{grid-template-columns:1fr}
  .price-side{border-left:0;border-top:1px solid rgba(255,255,255,.12);padding-left:0;padding-top:22px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .article-grid{grid-template-columns:1fr 1fr}
  .article-card.featured{grid-column:span 2}
}
@media (max-width:720px){
  .container{width:calc(100% - 32px)}
  .header-inner{min-height:64px;gap:14px}
  .nav{display:none;position:absolute;left:16px;right:16px;top:64px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px;flex-direction:column;align-items:flex-start;gap:12px;box-shadow:var(--shadow)}
  .nav.is-open{display:flex}
  .nav-toggle{display:block;margin-left:auto}
  .header-actions .btn-ghost{display:none}
  .header-actions .btn-primary{padding:10px 13px;font-size:12px}
  .hero-grid{padding:48px 0 46px}
  .hero h1{font-size:clamp(38px,10vw,54px)}
  .hero-sub{font-size:15px}
  .float-chip.one{right:8px;top:16px}
  .float-chip.two{left:8px;bottom:18px}
  .credential-bar{grid-template-columns:1fr}
  .credential-item{border-right:0;border-bottom:1px solid var(--line)}
  .credential-item:last-child{border-bottom:0}
  .section{padding:58px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px}
  .fit-grid,.teachers,.proof,.weeks,.takeaways,.article-grid{grid-template-columns:1fr}
  .article-card.featured{grid-column:span 1}
  .price-card{padding:26px 22px}
  .price-main .amount{font-size:46px}
  .price-list{grid-template-columns:1fr}
  .cta{flex-direction:column;align-items:flex-start;padding:30px 24px;margin-bottom:58px}
  .cta-action{align-items:flex-start;width:100%}
  .cta-form{width:100%;min-width:0}
  .inline-cta{flex-direction:column;align-items:flex-start}
  .inline-cta .actions{width:100%}
  .footer-grid{grid-template-columns:1fr}
}