/* ============================================================
   homeworkdoer.org — modern hub/cluster design system
   Conversion-focused rebuild (Phase 2). Self-contained: no
   Bootstrap / jQuery dependency. Brand blue #213b9c.
   ============================================================ */

:root{
  --blue:#213b9c;          /* brand primary */
  --blue-700:#1a2f7d;
  --blue-50:#eef2ff;
  --ink:#15224b;           /* headings */
  --body:#3d4a63;          /* body text */
  --muted:#6b7691;
  --line:#e6e9f2;
  --bg:#ffffff;
  --bg-soft:#f5f7fc;
  --cta:#ff6a3d;           /* high-contrast action */
  --cta-700:#e85226;
  --green:#13a45b;         /* trust/guarantee */
  --amber:#f5a623;
  --star:#ffb400;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(24,40,96,.05), 0 14px 38px rgba(24,40,96,.13);
  --shadow-sm:0 1px 2px rgba(24,40,96,.05), 0 6px 18px rgba(24,40,96,.08);
  --shadow-lg:0 2px 6px rgba(24,40,96,.06), 0 28px 60px rgba(24,40,96,.18);
  --maxw:1140px;
  --font:'Poppins',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden}
body{
  margin:0;font-family:var(--font);color:var(--body);
  font-size:17px;line-height:1.7;background:var(--bg);-webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{color:var(--ink);line-height:1.25;margin:0 0 .5em;font-weight:700}
h2{font-size:30px;letter-spacing:-.01em}
h3{font-size:21px}
p{margin:0 0 1rem}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.section{padding:64px 0}
.section.soft{background:var(--bg-soft)}
.center{text-align:center}
.center>h2::after{content:"";display:block;width:56px;height:4px;border-radius:2px;background:linear-gradient(90deg,var(--cta),#ff9a6b);margin:16px auto 0}
.lead{font-size:19px;color:var(--muted);max-width:760px}
.center .lead{margin-left:auto;margin-right:auto}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--blue);background:var(--blue-50);padding:6px 14px;border-radius:999px;margin-bottom:14px}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:9px;font-weight:600;font-size:17px;
  padding:15px 28px;border-radius:999px;border:0;cursor:pointer;transition:.18s;text-decoration:none}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-cta{background:linear-gradient(135deg,#ff7a4d,#ff5a2b);color:#fff;box-shadow:0 10px 24px rgba(255,106,61,.40)}
.btn-cta:hover{background:linear-gradient(135deg,#ff6a3a,#e8481f);color:#fff;box-shadow:0 14px 30px rgba(255,106,61,.48)}
.btn-blue{background:var(--blue);color:#fff}
.btn-blue:hover{background:var(--blue-700);color:#fff}
.btn-ghost{background:#fff;color:var(--blue);border:2px solid var(--line)}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue)}
.btn-lg{font-size:18px;padding:17px 34px}

/* ---------- top bar + header ---------- */
.topbar{background:var(--blue-700);color:#cdd6f7;font-size:14px}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:40px}
.topbar a{color:#fff}
.topbar .tb-left a{margin-right:20px}
.topbar .tb-social a{margin-left:14px;color:#cdd6f7}
header.site{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow-sm)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:74px;gap:18px}
header.site .logo img{height:50px;width:auto;display:block}
nav.main{display:flex;align-items:center;gap:26px}
nav.main a.navlink{color:var(--ink);font-weight:500;font-size:15.5px}
nav.main a.navlink:hover{color:var(--blue);text-decoration:none}
.has-menu{position:relative}
.has-menu>a::after{content:"▾";font-size:11px;margin-left:5px;color:var(--muted)}
.submenu{position:absolute;top:130%;left:50%;transform:translateX(-50%);background:#fff;border:1px solid var(--line);
  border-radius:12px;box-shadow:var(--shadow);padding:10px;min-width:230px;opacity:0;visibility:hidden;transition:.16s}
.has-menu:hover .submenu{opacity:1;visibility:visible;top:115%}
.submenu a{display:block;padding:9px 14px;border-radius:8px;color:var(--ink);font-size:15px;font-weight:500}
.submenu a:hover{background:var(--blue-50);text-decoration:none}
.header-cta{display:flex;align-items:center;gap:14px}
.header-cta .phone{font-weight:700;color:var(--ink);white-space:nowrap}
.header-cta .phone span{display:block;font-size:12px;font-weight:500;color:var(--muted)}
.header-cta .signin{font-weight:600;font-size:14.5px;color:var(--blue);background:var(--blue-50);border-radius:999px;padding:8px 16px;white-space:nowrap;text-decoration:none;transition:background .15s}
.header-cta .signin:hover{background:#e1e8fb}
.burger{display:none;background:none;border:0;font-size:26px;color:var(--ink);cursor:pointer}

/* ---------- hero ---------- */
.hero{background:radial-gradient(1200px 500px at 80% -10%,#eaf0ff 0,#fff 60%);padding:60px 0 30px}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.hero h1{font-size:46px;letter-spacing:-.02em;margin-bottom:18px}
.hero h1 .accent{color:var(--blue);background:linear-gradient(transparent 68%, rgba(255,106,61,.20) 0);padding:0 2px}
.hero p.sub{font-size:19px;color:var(--body);max-width:560px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin:26px 0 22px}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px 20px;align-items:center;font-size:14.5px;color:var(--muted);font-weight:500}
.hero-trust .tick{color:var(--green);font-weight:700;margin-right:5px}
.stars{color:var(--star);letter-spacing:2px}

/* quote estimator card */
.quote-card{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:26px}
.quote-card h3{font-size:20px;margin-bottom:4px}
.quote-card .qsub{font-size:14px;color:var(--muted);margin-bottom:18px}
.qfield{margin-bottom:14px}
.qfield label{display:block;font-size:13px;font-weight:600;color:var(--ink);margin-bottom:6px}
.qfield select,.qfield input{width:100%;padding:12px 13px;border:1.5px solid var(--line);border-radius:10px;
  font-family:inherit;font-size:15px;color:var(--ink);background:#fff;appearance:none}
.qfield select:focus,.qfield input:focus{outline:0;border-color:var(--blue)}
.qrow{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.qprice{display:flex;align-items:baseline;justify-content:space-between;background:var(--blue-50);border-radius:10px;padding:12px 16px;margin:6px 0 16px}
.qprice .lbl{font-size:14px;color:var(--muted);font-weight:500}
.qprice .amt{font-size:28px;font-weight:700;color:var(--blue)}
.qprice .amt small{font-size:14px;font-weight:500;color:var(--muted)}
.quote-card .btn{width:100%;justify-content:center}
.quote-card .fineprint{font-size:12px;color:var(--muted);text-align:center;margin-top:10px}

/* ---------- trust strip ---------- */
.trustbar{background:var(--ink);color:#dfe5f6}
.trustbar .wrap{display:flex;flex-wrap:wrap;justify-content:space-around;gap:18px;padding:20px 22px;text-align:center}
.trustbar .ti{font-size:14.5px;padding:0 18px;position:relative}
.trustbar .ti:not(:first-child)::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);height:34px;width:1px;background:rgba(255,255,255,.14)}
.trustbar .ti b{display:block;color:#8fc0ff;font-size:26px;font-weight:700;letter-spacing:-.01em}

/* ---------- live activity popup (bottom-left, one at a time) ---------- */
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(19,164,91,.5)}70%{box-shadow:0 0 0 6px rgba(19,164,91,0)}100%{box-shadow:0 0 0 0 rgba(19,164,91,0)}}
.activity-pop{position:fixed;left:22px;bottom:22px;z-index:54;width:340px;max-width:calc(100vw - 44px);
  background:#fff;border:1px solid var(--line);border-left:5px solid var(--cta);border-radius:16px;
  box-shadow:var(--shadow-lg);
  padding:16px 18px 16px 16px;display:flex;gap:14px;align-items:center;
  transform:translateY(28px) scale(.94);opacity:0;visibility:hidden;
  transition:opacity .5s cubic-bezier(.22,1,.36,1),transform .5s cubic-bezier(.22,1,.36,1),visibility .5s}
.activity-pop.show{transform:translateY(0) scale(1);opacity:1;visibility:visible}
.activity-pop .ap-icon{flex:0 0 46px;width:46px;height:46px;border-radius:50%;
  background:linear-gradient(135deg,var(--blue),#4f6fd4);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:21px}
.activity-pop .ap-body{font-size:13.5px;line-height:1.45;color:var(--body)}
.activity-pop .ap-live{display:inline-flex;align-items:center;gap:6px;font-size:10.5px;font-weight:700;
  letter-spacing:.07em;text-transform:uppercase;color:var(--green);margin-bottom:3px}
.activity-pop .ap-dot{width:8px;height:8px;border-radius:50%;background:var(--green);animation:pulse 1.4s infinite}
.activity-pop .ap-title{display:block;font-weight:700;color:var(--ink);font-size:14px}
.activity-pop .ap-time{display:block;color:var(--muted);font-size:11.5px;margin-top:2px}
@media(max-width:760px){
  .activity-pop{left:12px;bottom:12px;width:300px;max-width:calc(100vw - 24px);padding:11px 14px 11px 12px}
  .activity-pop .ap-icon{flex:0 0 38px;width:38px;height:38px;font-size:17px}
  .activity-pop .ap-title{font-size:13px}
  .activity-pop .ap-body{font-size:12.5px}
}

/* ---------- generic grids / cards ---------- */
.grid{display:grid;gap:24px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm);transition:transform .22s ease, box-shadow .22s ease}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.card h3{margin-bottom:8px}
.card>:first-child{margin-top:0}

/* experts */
.expert{display:flex;gap:14px;align-items:flex-start}
.avatar{flex:0 0 54px;width:54px;height:54px;border-radius:50%;background:linear-gradient(135deg,var(--blue),#4f6fd4);
  color:#fff;font-weight:700;font-size:19px;display:flex;align-items:center;justify-content:center}
.expert .x-name{font-weight:700;color:var(--ink)}
.expert .x-cred{font-size:14px;color:var(--muted)}
.expert .x-meta{font-size:13.5px;color:var(--body);margin-top:6px}
.expert .x-meta .star{color:var(--star)}

/* guarantees */
.guarantee{display:flex;gap:13px;align-items:flex-start}
.guarantee .gi{flex:0 0 42px;width:42px;height:42px;border-radius:10px;background:var(--blue-50);color:var(--blue);
  display:flex;align-items:center;justify-content:center;font-size:20px}
.guarantee h3{font-size:19px;margin-bottom:3px}
.guarantee p{font-size:14.5px;margin:0;color:var(--muted)}

/* steps */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step{position:relative;padding-left:8px}
.step .n{width:44px;height:44px;border-radius:50%;background:var(--cta);color:#fff;font-weight:700;font-size:20px;
  display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.step h3{font-size:19px}
.step p{font-size:15px;color:var(--muted);margin:0}

/* pricing table */
.ptable{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);border:1px solid var(--line)}
.ptable th,.ptable td{padding:14px 16px;text-align:center;border-bottom:1px solid var(--line);font-size:15.5px}
.ptable thead th{background:var(--blue);color:#fff;font-weight:600}
.ptable tbody th{text-align:left;font-weight:600;color:var(--ink);background:var(--bg-soft)}
.ptable td{color:var(--body)}
.ptable tbody tr:last-child td,.ptable tbody tr:last-child th{border-bottom:0}
.price-note{font-size:14px;color:var(--muted);margin-top:12px}

/* reviews */
.review{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm)}
.review .stars{font-size:15px;margin-bottom:8px}
.review p.txt{font-size:15.5px;color:var(--body);font-style:italic}
.review .who{font-weight:700;color:var(--ink);font-size:15px}
.review .where{color:var(--muted);font-size:13.5px}
.rating-hero{display:flex;align-items:center;gap:18px;justify-content:center;flex-wrap:wrap;margin-bottom:34px}
.rating-hero .big{font-size:46px;font-weight:700;color:var(--ink);line-height:1}
.rating-hero .src{font-size:14px;color:var(--muted)}

/* vs AI two-col */
.vs{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.vs .col{border-radius:var(--radius);padding:26px;border:1px solid var(--line)}
.vs .ai{background:#fff}
.vs .us{background:var(--blue);color:#eaf0ff;border-color:var(--blue)}
.vs .us h3,.vs .ai h3{margin-bottom:14px}
.vs .us h3{color:#fff}
.vs ul{list-style:none;padding:0;margin:0}
.vs li{padding:8px 0 8px 30px;position:relative;font-size:15.5px}
.vs .ai li::before{content:"✕";position:absolute;left:0;color:#d14;font-weight:700}
.vs .us li::before{content:"✓";position:absolute;left:0;color:#7bf0a8;font-weight:700}
.vs .us li{color:#dbe3ff}

/* subject card: clean anchor + whole-card clickable (stretched link) */
.subject-card{position:relative}
.subject-card h3{margin-bottom:6px}
.subject-card h3 a{color:var(--ink);text-decoration:none}
.subject-card h3 a::after{content:"";position:absolute;inset:0}
.subject-card:hover h3 a{color:var(--blue)}
/* byline (E-E-A-T attribution) */
.byline{font-size:13.5px;color:var(--muted);margin:14px 0 0;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.byline .bdot{width:5px;height:5px;border-radius:50%;background:var(--line)}

/* worked-example / solution block */
.solution{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:26px;max-width:760px;margin:0 auto}
.solution .problem{background:var(--blue-50);border-left:4px solid var(--blue);border-radius:8px;padding:14px 18px;margin-bottom:18px;font-size:15.5px;color:var(--ink)}
.solution ol{margin:0;padding-left:22px}
.solution ol li{margin-bottom:12px;font-size:15.5px}
.solution .math{font-family:'Cambria Math',Georgia,serif;background:#f5f7fc;border-radius:6px;padding:2px 8px;display:inline-block;color:var(--ink)}
.solution .answer{margin-top:16px;padding:12px 16px;background:#eafaf0;border:1px solid #b7e6c8;border-radius:8px;color:#0d7a3f;font-weight:600}

/* checklist (trust card) */
.checklist{list-style:none;padding:0;margin:0 0 18px}
.checklist li{position:relative;padding:8px 0 8px 28px;font-size:15px;color:var(--ink);border-bottom:1px solid var(--line)}
.checklist li:last-child{border-bottom:0}
.checklist li::before{content:"✓";position:absolute;left:0;color:var(--green);font-weight:700}

/* feature/topic chips */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
.chip{background:var(--bg-soft);border:1px solid var(--line);border-radius:999px;padding:8px 16px;font-size:14.5px;color:var(--ink);font-weight:500}

/* FAQ accordion */
.faq{max-width:840px;margin:0 auto}
.qa{border:1px solid var(--line);border-radius:12px;margin-bottom:12px;background:#fff;overflow:hidden}
.qa>button{width:100%;text-align:left;background:none;border:0;padding:18px 22px;font-family:inherit;font-size:17px;
  font-weight:600;color:var(--ink);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:14px}
.qa>button .ic{flex:0 0 auto;color:var(--blue);transition:.2s;font-size:20px}
.qa.open>button .ic{transform:rotate(45deg)}
.qa .ans{max-height:0;overflow:hidden;transition:max-height .25s ease;padding:0 22px}
.qa.open .ans{max-height:600px;padding-bottom:18px}
.qa .ans p{font-size:15.5px;color:var(--body);margin:0 0 .6rem}

/* CTA band */
.ctaband{background:linear-gradient(120deg,var(--blue),#3450c4);color:#fff;border-radius:20px;padding:46px;text-align:center;box-shadow:var(--shadow)}
.ctaband h2{color:#fff;margin-bottom:10px}
.ctaband p{color:#dbe3ff;max-width:620px;margin:0 auto 22px}

/* breadcrumbs */
.crumbs{font-size:13.5px;color:var(--muted);padding:16px 0}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--blue)}

/* prose block (long-form copy) */
.prose h2{margin-top:8px}
.prose h3{margin-top:24px;color:var(--blue)}
.prose ul{padding-left:20px}
.prose li{margin-bottom:7px}

/* footer */
footer.site{background:var(--ink);color:#b9c2db;padding:54px 0 26px;font-size:14.5px;margin-top:10px}
footer.site .fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:30px}
footer.site h4{color:#fff;font-size:15px;margin-bottom:14px}
footer.site a{color:#b9c2db}
footer.site a:hover{color:#fff}
footer.site ul{list-style:none;padding:0;margin:0}
footer.site li{margin-bottom:9px}
footer.site .fbrand img{height:40px;margin-bottom:14px}
footer.site .fcontact b{color:#fff;font-size:20px}
footer.site .legal{border-top:1px solid #2a3768;margin-top:34px;padding-top:20px;font-size:12.5px;color:#8b96bb}

/* cookie bar */
.cookiebar{position:fixed;left:50%;transform:translateX(-50%);bottom:18px;width:calc(100% - 36px);max-width:560px;z-index:60;background:#fff;border:1px solid var(--line);
  box-shadow:var(--shadow);border-radius:14px;padding:16px 20px;display:flex;gap:16px;align-items:center;justify-content:center;flex-wrap:wrap;font-size:14px}
.cookiebar.hide{display:none}
.cookiebar .btn{padding:10px 20px;font-size:15px}

/* sticky mobile CTA */
.mobile-cta{display:none}

/* ---------- responsive ---------- */
@media(max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:30px}
  .hero h1{font-size:36px}
  .g4{grid-template-columns:repeat(2,1fr)}
  .vs{grid-template-columns:1fr}
  footer.site .fgrid{grid-template-columns:1fr 1fr}
}
@media(max-width:760px){
  .section{padding:46px 0}
  h2{font-size:26px}
  h3{font-size:20px}
  nav.main,.header-cta .phone{display:none}
  .burger{display:block}
  nav.main.open{display:flex;position:absolute;top:74px;left:0;right:0;flex-direction:column;align-items:flex-start;
    background:#fff;border-bottom:1px solid var(--line);padding:14px 22px;gap:6px;box-shadow:var(--shadow)}
  nav.main.open a.navlink{padding:8px 0;width:100%}
  nav.main.open .submenu{position:static;display:block;transform:none;opacity:1;visibility:visible;box-shadow:none;border:0;max-height:0;overflow:hidden;padding:0 0 0 14px;transition:max-height .25s ease}
  nav.main.open .has-menu.sub-open .submenu{max-height:420px}
  nav.main.open .has-menu.sub-open>a::after{transform:rotate(180deg)}
  .g3,.g2,.steps,.g4{grid-template-columns:1fr}
  .topbar .tb-left a:last-child{display:none}
  .ptable{display:block;overflow-x:auto;white-space:nowrap}
  /* mobile header fit: shrink logo + CTA, drop topbar social so the row never clips */
  header.site .wrap{gap:8px}
  header.site .logo img{height:40px}
  .header-cta{gap:10px}
  .header-cta .btn-cta{padding:9px 14px;font-size:13.5px}
  .header-cta .signin{font-size:13px;padding:6px 12px}
  .topbar{font-size:13px}
  .topbar .tb-social{display:none}
  .topbar .tb-left a{margin-right:0}
  .hero h1{font-size:30px}
  .hero{padding:34px 0 18px}
}