/* ============================================================
   Riverline IELTS — Design System
   Tokens → Base → Layout → Components → Utilities
   ============================================================ */

/* ---------- 1. TOKENS ---------- */
:root{
  /* palette */
  --river:#087F8C;
  --river-deep:#075E68;
  --river-blue:#159BB0;
  --river-light:#DDF4F5;
  --river-mist:#EEF9F9;
  --navy:#102A43;
  --navy-soft:#243B53;
  --white:#FFFFFF;
  --offwhite:#F7FAFA;
  --grey:#E5ECEE;
  --muted:#627D8A;
  --success:#2F9E73;
  --warning:#E9A23B;

  /* gradients */
  --grad-river:linear-gradient(135deg,#087F8C 0%,#159BB0 50%,#6BC8D0 100%);
  --grad-soft:linear-gradient(135deg,#F7FAFA 0%,#EEF9F9 50%,#F5F8FC 100%);
  --grad-dark:linear-gradient(135deg,#102A43 0%,#0B4050 55%,#075E68 100%);

  /* radius */
  --r-sm:8px; --r-md:12px; --r-lg:16px; --r-card:18px; --r-panel:22px;

  /* shadows */
  --sh-1:0 8px 30px rgba(16,42,67,.07);
  --sh-2:0 20px 60px rgba(16,42,67,.08);
  --sh-in:inset 0 1px 0 rgba(255,255,255,.6);

  /* spacing rhythm */
  --gutter:clamp(20px,4vw,40px);
  --maxw:1200px;
  --sec-y:clamp(64px,8vw,116px);

  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. BASE ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:16px;line-height:1.65;color:var(--navy-soft);
  background:var(--offwhite);
  font-feature-settings:"cv05" 1,"ss01" 1;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg,video{max-width:100%;display:block}
h1,h2,h3,h4{color:var(--navy);margin:0 0 .5em;letter-spacing:-.022em;line-height:1.12;font-weight:600}
h1{font-size:clamp(34px,4.6vw,64px);line-height:1.06;letter-spacing:-.032em;font-weight:600}
h2{font-size:clamp(28px,3.3vw,44px);letter-spacing:-.028em}
h3{font-size:clamp(19px,1.7vw,25px);letter-spacing:-.018em}
h4{font-size:17px;letter-spacing:-.01em;font-weight:600}
p{margin:0 0 1em}
a{color:var(--river-deep);text-decoration:none}
ul{margin:0;padding:0;list-style:none}
strong{font-weight:600;color:var(--navy)}
:focus-visible{outline:2px solid var(--river);outline-offset:3px;border-radius:4px}
.skip{position:absolute;left:-9999px;top:0;background:var(--white);padding:12px 18px;z-index:200;border-radius:0 0 var(--r-md) 0}
.skip:focus{left:0}
::selection{background:var(--river-light);color:var(--navy)}

/* ---------- 3. LAYOUT ---------- */
.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:var(--sec-y);position:relative}
.section--mist{background:var(--river-mist)}
.section--soft{background:var(--grad-soft)}
.section--dark{background:var(--grad-dark);color:#CBE3E8}
.section--dark h1,.section--dark h2,.section--dark h3,.section--dark h4{color:#fff}
.section--dark p{color:#AFCBD3}
.rule{height:1px;background:linear-gradient(90deg,transparent,var(--grey) 18%,var(--grey) 82%,transparent);border:0;margin:0}
.grid{display:grid;gap:clamp(18px,2.2vw,26px)}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}

/* section header */
.sec-head{max-width:660px;margin-bottom:clamp(32px,4vw,54px)}
.sec-head.center{margin-inline:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
  color:var(--river-deep);margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1.5px;background:var(--river);display:block;opacity:.8}
.section--dark .eyebrow{color:#7FD3DD}
.section--dark .eyebrow::before{background:#7FD3DD}
.lede{font-size:clamp(16px,1.2vw,18px);color:var(--muted);max-width:60ch;margin:0}
.section--dark .lede{color:#A8C6CF}

/* ---------- 4. GLASS ---------- */
.glass{
  background:rgba(255,255,255,.68);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  border:1px solid rgba(255,255,255,.65);
  box-shadow:var(--sh-1);
}
.glass-dark{
  background:rgba(255,255,255,.06);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,.12);
}

/* ---------- 5. BUTTONS ---------- */
.btn{
  --bg:var(--river-deep);--fg:#fff;--bd:transparent;
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font:inherit;font-size:15px;font-weight:500;letter-spacing:-.005em;
  padding:12px 20px;border-radius:var(--r-md);border:1px solid var(--bd);
  background:var(--bg);color:var(--fg);cursor:pointer;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .2s ease,color .2s ease,border-color .2s ease;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(7,94,104,.22)}
.btn:active{transform:translateY(0)}
.btn i,.btn svg{width:17px;height:17px;stroke-width:1.8}
.btn--primary{--bg:var(--river-deep)}
.btn--primary:hover{--bg:#065059}
.btn--ghost{--bg:transparent;--fg:var(--navy);--bd:var(--grey)}
.btn--ghost:hover{--bg:#fff;--bd:#C9DDE1;box-shadow:var(--sh-1)}
.btn--light{--bg:#fff;--fg:var(--navy);--bd:rgba(255,255,255,.7)}
.btn--onDark{--bg:rgba(255,255,255,.08);--fg:#fff;--bd:rgba(255,255,255,.25)}
.btn--onDark:hover{--bg:rgba(255,255,255,.15)}
.btn--sm{padding:9px 15px;font-size:14px}
.btn--lg{padding:15px 26px;font-size:16px}
.btn--block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:7px;font-weight:500;font-size:15px;color:var(--river-deep);position:relative}
.link-arrow::after{content:"";position:absolute;left:0;right:16px;bottom:-2px;height:1px;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease);opacity:.5}
.link-arrow:hover::after{transform:scaleX(1)}
.link-arrow i{transition:transform .3s var(--ease);width:16px;height:16px}
.link-arrow:hover i{transform:translateX(3px)}

/* ---------- 6. BADGES / PROGRESS ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:500;color:var(--navy-soft);
  background:var(--river-mist);border:1px solid var(--grey);
  padding:4px 10px;border-radius:var(--r-sm);
}
.badge--river{background:var(--river-light);border-color:#BEE6E9;color:var(--river-deep)}
.badge--success{background:#E7F5EF;border-color:#C6E8DA;color:#227A59}
.badge--warn{background:#FDF3E3;border-color:#F3DFBB;color:#9A6716}
.badge--dark{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.16);color:#CFE7EB}

.bar{height:6px;border-radius:99px;background:var(--grey);overflow:hidden}
.bar > span{display:block;height:100%;border-radius:99px;background:var(--grad-river);width:0;transition:width 1.1s var(--ease)}
.bar--dark{background:rgba(255,255,255,.12)}

/* ---------- 7. CARDS ---------- */
.card{
  background:var(--white);border:1px solid var(--grey);border-radius:var(--r-card);
  padding:clamp(20px,2.2vw,28px);box-shadow:var(--sh-1);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s ease;
}
.card--hover:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#CFE3E7}
.card__icon{
  width:40px;height:40px;border-radius:var(--r-md);display:grid;place-items:center;
  background:var(--river-mist);border:1px solid var(--grey);color:var(--river-deep);margin-bottom:16px;
}
.card__icon i{width:19px;height:19px;stroke-width:1.7}
.card p{color:var(--muted);font-size:15px;margin-bottom:0}
.card h3{font-size:19px}
.meta-row{display:flex;flex-wrap:wrap;gap:8px 16px;font-size:13px;color:var(--muted)}
.meta-row span{display:inline-flex;align-items:center;gap:6px}
.meta-row i{width:14px;height:14px;stroke-width:1.7}

/* checklist */
.checks{display:grid;gap:9px;margin:0 0 4px}
.checks li{display:flex;gap:10px;font-size:15px;color:var(--navy-soft);line-height:1.5}
.checks i{width:16px;height:16px;color:var(--river);flex:none;margin-top:4px;stroke-width:2}
.section--dark .checks li{color:#BBD6DC}
.section--dark .checks i{color:#6BC8D0}

/* ---------- 8. NAVBAR ---------- */
.nav{position:sticky;top:0;z-index:100;background:rgba(247,250,250,.72);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border-bottom:1px solid transparent;transition:border-color .3s ease,box-shadow .3s ease,background .3s ease}
.nav.is-stuck{border-bottom-color:var(--grey);box-shadow:0 6px 24px rgba(16,42,67,.05);background:rgba(255,255,255,.85)}
.nav__inner{display:flex;align-items:center;gap:26px;height:66px}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:600;font-size:17px;color:var(--navy);letter-spacing:-.02em}
.logo__mark{width:28px;height:28px;border-radius:9px;background:var(--grad-river);display:grid;place-items:center;box-shadow:0 4px 12px rgba(8,127,140,.28)}
.logo__mark svg{width:16px;height:16px}
.nav__links{display:flex;align-items:center;gap:2px;margin-left:8px}
.nav__links a{
  font-size:14.5px;font-weight:450;color:var(--navy-soft);padding:8px 12px;border-radius:var(--r-sm);
  transition:color .2s ease,background .2s ease;
}
.nav__links a:hover{color:var(--river-deep);background:rgba(221,244,245,.6)}
.nav__links a.active{color:var(--river-deep);font-weight:550}
.nav__actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav__actions .login{font-size:14.5px;color:var(--navy-soft);padding:8px 6px}
.nav__actions .login:hover{color:var(--river-deep)}
.nav__dropdown{position:relative}
.nav__dropdown-toggle{display:flex;align-items:center;font-size:inherit;font-weight:500;color:var(--navy-soft);background:none;border:none;cursor:pointer;padding:8px 12px;border-radius:var(--r-sm);transition:background .15s,color .15s}
.nav__dropdown-toggle:hover{color:var(--river-deep);background:rgba(221,244,245,.6)}
.nav__dropdown-menu{display:none;position:absolute;top:calc(100% + 6px);left:0;min-width:160px;background:#fff;border:1px solid var(--grey);border-radius:var(--r-sm);box-shadow:0 8px 24px rgba(0,0,0,.08);padding:6px 0;z-index:100}
.nav__dropdown:hover .nav__dropdown-menu,.nav__dropdown.is-open .nav__dropdown-menu{display:block}
.nav__dropdown-menu li{list-style:none}
.nav__dropdown-menu a{display:block;padding:8px 16px;font-size:14px;color:var(--navy);transition:background .12s,color .12s}
.nav__dropdown-menu a:hover{background:rgba(221,244,245,.6);color:var(--river-deep)}
.burger{display:none;width:40px;height:40px;border:1px solid var(--grey);background:#fff;border-radius:var(--r-sm);align-items:center;justify-content:center;cursor:pointer;margin-left:auto}
.burger i{width:19px;height:19px;color:var(--navy)}
.mobile-nav{display:none}

/* ---------- 9. HERO ---------- */
.hero{position:relative;overflow:hidden;padding-block:clamp(48px,6vw,82px) clamp(56px,7vw,96px);background:var(--grad-soft)}
.hero::before{
  content:"";position:absolute;inset:-30% -10% auto -20%;height:70vh;pointer-events:none;
  background:radial-gradient(60% 60% at 30% 30%,rgba(21,155,176,.16),transparent 70%),
             radial-gradient(50% 50% at 80% 10%,rgba(107,200,208,.14),transparent 70%);
}
.hero__grid{position:relative;display:grid;grid-template-columns:1.02fr .98fr;gap:clamp(32px,4vw,56px);align-items:center}
.hero h1{max-width:14ch}
.hero__sub{font-size:clamp(16px,1.25vw,18.5px);color:var(--navy-soft);max-width:52ch;margin-bottom:28px}
.hero__cta{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.hero__note{margin-top:22px;font-size:13.5px;color:var(--muted);display:flex;align-items:center;gap:8px}
.hero__note i{width:15px;height:15px;color:var(--river)}

/* ---------- 10. PRODUCT PREVIEW (dashboard mockup) ---------- */
.preview{
  border-radius:var(--r-panel);padding:20px;
  background:rgba(255,255,255,.72);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);
  border:1px solid rgba(255,255,255,.8);box-shadow:var(--sh-2);
  position:relative;
}
.preview__bar{display:flex;align-items:center;gap:8px;padding-bottom:14px;border-bottom:1px solid var(--grey);margin-bottom:18px}
.preview__bar .dot{width:9px;height:9px;border-radius:50%;background:var(--grey)}
.preview__bar .title{font-size:12.5px;color:var(--muted);margin-left:6px;letter-spacing:.02em}
.preview__bar .badge{margin-left:auto}
.score-head{display:grid;grid-template-columns:auto 1fr auto;gap:16px;align-items:center;background:var(--white);border:1px solid var(--grey);border-radius:var(--r-lg);padding:16px 18px}
.score-big{font-size:38px;font-weight:600;color:var(--navy);line-height:1;letter-spacing:-.03em}
.score-big small{display:block;font-size:11.5px;font-weight:500;color:var(--muted);letter-spacing:.12em;text-transform:uppercase;margin-bottom:6px}
.score-target{text-align:right}
.score-target b{display:block;font-size:22px;color:var(--river-deep);font-weight:600;letter-spacing:-.02em}
.score-target small{font-size:11.5px;color:var(--muted);letter-spacing:.1em;text-transform:uppercase}
.skill-list{display:grid;gap:12px;margin-top:14px}
.skill-row{display:grid;grid-template-columns:88px 1fr 34px;gap:12px;align-items:center;font-size:13.5px}
.skill-row span:first-child{color:var(--navy-soft);font-weight:450}
.skill-row b{text-align:right;color:var(--navy);font-weight:600;font-size:14px}
.preview__split{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:14px}
.mini{background:var(--white);border:1px solid var(--grey);border-radius:var(--r-md);padding:14px}
.mini small{font-size:11.5px;color:var(--muted);letter-spacing:.08em;text-transform:uppercase}
.mini strong{display:block;font-size:15px;color:var(--navy);margin-top:6px;font-weight:600}
.mini p{font-size:12.5px;color:var(--muted);margin:4px 0 0}
.float-chip{
  position:absolute;right:-14px;bottom:34px;display:flex;align-items:center;gap:10px;
  background:rgba(255,255,255,.85);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.8);box-shadow:var(--sh-1);border-radius:var(--r-md);padding:10px 14px;
}
.float-chip i{width:17px;height:17px;color:var(--success)}
.float-chip b{font-size:13.5px;color:var(--navy);font-weight:600}
.float-chip small{display:block;font-size:11.5px;color:var(--muted)}

/* ---------- 11. TRUST STRIP ---------- */
.trust{display:grid;grid-template-columns:1.1fr 2fr;gap:clamp(24px,4vw,60px);align-items:center}
.trust p{font-size:16px;color:var(--navy-soft);margin:0;max-width:34ch}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(18px,3vw,34px)}
.stat b{display:block;font-size:clamp(26px,2.6vw,34px);color:var(--navy);font-weight:600;letter-spacing:-.03em;line-height:1}
.stat span{display:block;font-size:13.5px;color:var(--muted);margin-top:7px}

/* ---------- 12. STEPS ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(20px,3vw,34px);position:relative}
.steps::before{content:"";position:absolute;top:26px;left:9%;right:9%;height:1.5px;background:linear-gradient(90deg,rgba(8,127,140,.06),rgba(8,127,140,.42),rgba(8,127,140,.06))}
.step{position:relative}
.step__num{
  width:52px;height:52px;border-radius:16px;background:#fff;border:1px solid var(--grey);
  display:grid;place-items:center;font-weight:600;color:var(--river-deep);font-size:15px;
  box-shadow:var(--sh-1);position:relative;z-index:1;margin-bottom:18px;letter-spacing:.02em;
}
.step h3{font-size:20px;margin-bottom:8px}
.step p{color:var(--muted);font-size:15px;margin:0}

/* ---------- 13. SKILL PANELS ---------- */
.panel{
  background:#fff;border:1px solid var(--grey);border-radius:var(--r-card);overflow:hidden;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);box-shadow:var(--sh-1);
}
.panel:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.panel__top{padding:22px 24px 18px;border-bottom:1px solid var(--grey);display:flex;gap:14px;align-items:flex-start}
.panel__top .card__icon{margin:0}
.panel__top h3{margin:0 0 3px;font-size:20px}
.panel__top p{margin:0;font-size:14px;color:var(--muted)}
.panel__body{padding:20px 24px 24px;background:linear-gradient(180deg,#fff,var(--river-mist))}

/* ---------- 14. TESTIMONIALS ---------- */
.quote{display:flex;flex-direction:column;gap:16px;height:100%}
.quote blockquote{margin:0;font-size:15.5px;color:var(--navy-soft);line-height:1.7}
.band{display:flex;align-items:center;gap:14px;padding:12px 14px;border-radius:var(--r-md);background:var(--river-mist);border:1px solid var(--grey)}
.band div{text-align:center}
.band small{display:block;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.band b{font-size:19px;color:var(--navy);font-weight:600}
.band .delta{margin-left:auto;font-size:13px;font-weight:600;color:var(--success)}
.person{display:flex;align-items:center;gap:11px;margin-top:auto}
.avatar{width:36px;height:36px;border-radius:50%;background:var(--grad-river);color:#fff;display:grid;place-items:center;font-size:13px;font-weight:600;flex:none}
.person b{display:block;font-size:14px;color:var(--navy);font-weight:600;line-height:1.3}
.person span{font-size:12.5px;color:var(--muted)}

/* ---------- 15. FAQ ---------- */
.faq{max-width:820px;margin-inline:auto;border-top:1px solid var(--grey)}
.faq__item{border-bottom:1px solid var(--grey)}
.faq__q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  background:none;border:0;padding:22px 4px;text-align:left;cursor:pointer;
  font:inherit;font-size:17px;font-weight:500;color:var(--navy);letter-spacing:-.012em;
}
.faq__q i{width:18px;height:18px;color:var(--river-deep);flex:none;transition:transform .3s var(--ease)}
.faq__item.open .faq__q i{transform:rotate(45deg)}
.faq__a{overflow:hidden;height:0;transition:height .35s var(--ease)}
.faq__a > div{padding:0 60px 22px 4px;color:var(--muted);font-size:15px}

/* ---------- 16. TABS ---------- */
.tabs{display:flex;gap:6px;flex-wrap:wrap;padding:5px;background:#fff;border:1px solid var(--grey);border-radius:var(--r-md);width:max-content;max-width:100%}
.tabs button{
  font:inherit;font-size:14px;font-weight:500;color:var(--muted);background:none;border:0;cursor:pointer;
  padding:8px 15px;border-radius:var(--r-sm);transition:.2s ease;
}
.tabs button:hover{color:var(--navy)}
.tabs button.active{background:var(--river-mist);color:var(--river-deep)}
.tabpane{display:none}
.tabpane.active{display:block;animation:fade .35s var(--ease)}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* ---------- 17. FORMS ---------- */
.field{display:grid;gap:7px;margin-bottom:16px}
.field label{font-size:13.5px;font-weight:500;color:var(--navy)}
.field input,.field textarea,.field select{
  font:inherit;font-size:15px;color:var(--navy);background:#fff;
  border:1px solid var(--grey);border-radius:var(--r-md);padding:12px 14px;width:100%;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:130px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#9AAEB6}
.field input:focus,.field textarea:focus,.field select:focus{outline:0;border-color:var(--river);box-shadow:0 0 0 3px rgba(8,127,140,.12)}
.field .err{font-size:12.5px;color:#C0453B;display:none}
.field.invalid input,.field.invalid textarea{border-color:#E0A9A3}
.field.invalid .err{display:block}
.field__control{position:relative;display:flex;align-items:center}
.field__icon{position:absolute;left:14px;color:var(--muted);width:18px;height:18px;pointer-events:none;display:inline-flex;align-items:center;justify-content:center}
.field__icon i,.field__icon svg{width:18px;height:18px}
.field--icon input{padding-left:42px}
.field__toggle{position:absolute;right:8px;background:none;border:none;color:var(--muted);cursor:pointer;padding:6px 8px;border-radius:var(--r-sm);display:inline-flex;align-items:center;gap:4px;font-size:13px;font-weight:500;transition:color .2s ease,background .2s ease}
.field__toggle:hover{color:var(--river-deep);background:var(--river-mist)}
.field__toggle i,.field__toggle svg{width:16px;height:16px}
.field--toggle input{padding-right:76px}
.auth{max-width:440px;margin-inline:auto}
.auth-card{background:#fff;border:1px solid var(--grey);border-radius:var(--r-panel);padding:clamp(24px,3vw,36px);box-shadow:var(--sh-2)}
.auth-alert{padding:14px 16px;border-radius:var(--r-md);margin-bottom:20px;font-size:14px;display:flex;gap:12px;align-items:flex-start}
.auth-alert--danger{background:rgba(239,68,68,0.07);border:1px solid rgba(239,68,68,0.22);color:#991B1B}
.auth-alert i,.auth-alert svg{width:18px;height:18px;color:#DC2626;flex:none;margin-top:2px}
.auth-alert ul{margin:0;padding-left:16px;list-style:disc}
.auth-alert li{margin-bottom:3px;color:#991B1B}
.auth-alert li:last-child{margin-bottom:0}
.divider{display:flex;align-items:center;gap:14px;color:var(--muted);font-size:13px;margin:20px 0}
.divider::before,.divider::after{content:"";flex:1;height:1px;background:var(--grey)}

/* ---------- 18. PRICING ---------- */
.price-card{display:flex;flex-direction:column;gap:18px;height:100%}
.price-card .amount{font-size:34px;font-weight:600;color:var(--navy);letter-spacing:-.03em;line-height:1}
.price-card .amount span{font-size:14px;font-weight:400;color:var(--muted);letter-spacing:0}
.price-card.featured{border-color:#BEE6E9;box-shadow:var(--sh-2);position:relative;background:linear-gradient(180deg,#fff,var(--river-mist))}

/* ---------- 19. INTERFACE MOCKUPS (skill pages) ---------- */
.ui{background:#fff;border:1px solid var(--grey);border-radius:var(--r-panel);box-shadow:var(--sh-2);overflow:hidden}
.ui__head{display:flex;align-items:center;gap:12px;padding:14px 18px;border-bottom:1px solid var(--grey);background:var(--river-mist)}
.ui__head b{font-size:14px;color:var(--navy);font-weight:600}
.ui__head .badge{margin-left:auto}
.ui__body{padding:clamp(18px,2.2vw,26px)}
.player{display:flex;align-items:center;gap:16px}
.play{width:46px;height:46px;border-radius:50%;background:var(--grad-river);color:#fff;display:grid;place-items:center;border:0;cursor:pointer;flex:none;box-shadow:0 8px 20px rgba(8,127,140,.28)}
.play i{width:19px;height:19px}
.wave{display:flex;align-items:flex-end;gap:3px;height:38px;flex:1;overflow:hidden}
.wave span{flex:1;background:#CBE3E8;border-radius:2px;min-width:2px}
.wave span.on{background:var(--river)}
.qopt{display:flex;align-items:center;gap:11px;padding:11px 14px;border:1px solid var(--grey);border-radius:var(--r-md);font-size:14.5px;color:var(--navy-soft);cursor:pointer;transition:.2s ease;background:#fff}
.qopt:hover{border-color:#BEE6E9;background:var(--river-mist)}
.qopt.sel{border-color:var(--river);background:var(--river-light);color:var(--river-deep);font-weight:500}
.qopt .k{width:24px;height:24px;border-radius:7px;border:1px solid var(--grey);display:grid;place-items:center;font-size:12px;background:#fff;flex:none}
.qnav{display:flex;flex-wrap:wrap;gap:6px}
.qnav i{width:30px;height:30px;border-radius:8px;border:1px solid var(--grey);display:grid;place-items:center;font-size:12.5px;font-style:normal;color:var(--muted);background:#fff}
.qnav i.done{background:var(--river-light);border-color:#BEE6E9;color:var(--river-deep)}
.qnav i.now{background:var(--river-deep);border-color:var(--river-deep);color:#fff}
.passage{font-size:14.5px;line-height:1.8;color:var(--navy-soft);max-height:260px;overflow:hidden;position:relative;-webkit-mask-image:linear-gradient(180deg,#000 70%,transparent)}
.editor{border:1px solid var(--grey);border-radius:var(--r-md);overflow:hidden}
.editor__txt{padding:16px;font-size:14.5px;line-height:1.8;color:var(--navy-soft);min-height:180px;background:#fff}
.editor__foot{display:flex;gap:16px;align-items:center;padding:10px 16px;border-top:1px solid var(--grey);background:var(--river-mist);font-size:12.5px;color:var(--muted)}
.criteria{display:grid;gap:14px}
.criteria .skill-row{grid-template-columns:150px 1fr 32px}
.timer{font-variant-numeric:tabular-nums;font-weight:600;color:var(--navy);font-size:14px}

/* ---------- 20. PAGE HERO (inner pages) ---------- */
.phero{background:var(--grad-soft);padding-block:clamp(44px,5vw,74px);border-bottom:1px solid var(--grey);position:relative;overflow:hidden}
.phero::after{content:"";position:absolute;right:-10%;top:-40%;width:50vw;height:60vh;background:radial-gradient(circle,rgba(21,155,176,.12),transparent 68%)}
.phero__in{position:relative;max-width:720px}
.phero h1{font-size:clamp(30px,3.8vw,52px)}
.phero p{font-size:clamp(16px,1.2vw,18px);color:var(--muted);max-width:58ch;margin-bottom:0}
.crumbs{font-size:13px;color:var(--muted);margin-bottom:14px;display:flex;gap:8px;align-items:center}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--river-deep)}

/* ---------- 21. CTA BAND ---------- */
.cta-band{background:var(--grad-dark);color:#fff;border-radius:var(--r-panel);padding:clamp(30px,4vw,54px);display:grid;grid-template-columns:1.4fr auto;gap:28px;align-items:center;position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;right:-6%;top:-60%;width:44%;height:220%;background:radial-gradient(circle,rgba(107,200,208,.22),transparent 65%)}
.cta-band h2{color:#fff;margin-bottom:8px;font-size:clamp(24px,2.6vw,34px)}
.cta-band p{color:#A8C6CF;margin:0;max-width:52ch}
.cta-band .btns{display:flex;gap:12px;flex-wrap:wrap;position:relative}

/* ---------- 22. FOOTER ---------- */
.footer{background:var(--grad-dark);color:#A8C6CF;padding-block:clamp(48px,6vw,72px) 28px;margin-top:0}
.footer__grid{display:grid;grid-template-columns:1.5fr repeat(4,1fr);gap:clamp(24px,3vw,40px)}
.footer .logo{color:#fff}
.footer__about{font-size:14.5px;color:#93B6C0;max-width:34ch;margin:16px 0 0}
.footer h4{color:#fff;font-size:13px;letter-spacing:.12em;text-transform:uppercase;font-weight:600;margin-bottom:14px}
.footer li{margin-bottom:9px}
.footer a{color:#A8C6CF;font-size:14.5px;transition:color .2s ease}
.footer a:hover{color:#fff}
.footer__bot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.1);margin-top:clamp(34px,4vw,52px);padding-top:22px;font-size:13.5px;color:#7FA0AB}
.socials{display:flex;gap:8px}
.socials a{width:34px;height:34px;border-radius:9px;border:1px solid rgba(255,255,255,.14);display:grid;place-items:center}
.socials a:hover{background:rgba(255,255,255,.08)}
.socials i{width:16px;height:16px}

/* ---------- 23. MISC ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,4vw,60px);align-items:center}
.split--wide{grid-template-columns:1.1fr .9fr}
.sticky-buy{position:sticky;top:92px}
.reveal{opacity:0;transform:translateY(14px)}
.reveal.in{opacity:1;transform:none;transition:opacity .6s var(--ease),transform .6s var(--ease)}
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}
.chip{font:inherit;font-size:13.5px;padding:8px 14px;border-radius:var(--r-sm);border:1px solid var(--grey);background:#fff;color:var(--navy-soft);cursor:pointer;transition:.2s ease}
.chip:hover{border-color:#BEE6E9}
.chip.active{background:var(--river-deep);border-color:var(--river-deep);color:#fff}
.prose{max-width:720px}
.prose h2{font-size:26px;margin-top:44px}
.prose h3{font-size:19px;margin-top:28px}
.prose p,.prose li{font-size:16px;color:var(--navy-soft)}
.prose ul{list-style:disc;padding-left:20px;margin-bottom:1em}
.prose li{margin-bottom:8px}
.modal{position:fixed;inset:0;z-index:200;display:none;place-items:center;padding:20px;background:rgba(16,42,67,.42);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}
.modal.open{display:grid}
.modal__box{background:#fff;border-radius:var(--r-panel);max-width:440px;width:100%;padding:28px;box-shadow:var(--sh-2)}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* ===== Responsive: 1280 / 1080 / 900 / 680 / 420 ===== */
@media (max-width:1280px){:root{--maxw:1120px}}
@media (max-width:1080px){.nav__links{display:none}.nav__actions{display:none}.burger{display:flex}.hero__grid{grid-template-columns:1fr;gap:40px}.hero h1{max-width:18ch}.trust{grid-template-columns:1fr;gap:26px}.footer__grid{grid-template-columns:1fr 1fr 1fr}.g-4{grid-template-columns:repeat(2,1fr)}.cta-band{grid-template-columns:1fr}}
@media (max-width:900px){.split,.split--wide{grid-template-columns:1fr;gap:32px}.g-3{grid-template-columns:repeat(2,1fr)}.steps{grid-template-columns:1fr;gap:22px}.steps::before{top:0;bottom:0;left:26px;right:auto;width:1.5px;height:auto;background:linear-gradient(180deg,rgba(8,127,140,.06),rgba(8,127,140,.4),rgba(8,127,140,.06))}.step{padding-left:0}.sticky-buy{position:static}}
@media (max-width:680px){:root{--sec-y:clamp(48px,10vw,66px)}.g-2,.g-3,.g-4{grid-template-columns:1fr}.stats{grid-template-columns:1fr 1fr;gap:20px}.footer__grid{grid-template-columns:1fr 1fr}.preview__split{grid-template-columns:1fr}.float-chip{right:8px;bottom:-14px}.faq__a > div{padding-right:8px}.skill-row{grid-template-columns:74px 1fr 32px}.criteria .skill-row{grid-template-columns:110px 1fr 30px}.btn{padding:13px 20px}.cta-band{text-align:left}}
@media (max-width:420px){:root{--gutter:18px}h1{font-size:31px}.score-big{font-size:32px}.stats{grid-template-columns:1fr}.footer__grid{grid-template-columns:1fr}.tabs{width:100%}.tabs button{flex:1}}

/* mobile nav sheet */
.mobile-nav{position:fixed;inset:0;z-index:150;background:rgba(255,255,255,.97);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);transform:translateY(-100%);transition:transform .38s cubic-bezier(.22,.61,.36,1);display:flex;flex-direction:column;overflow-y:auto}
.mobile-nav.open{transform:none}
.mobile-nav__head{display:flex;align-items:center;justify-content:space-between;height:66px;padding-inline:var(--gutter);border-bottom:1px solid var(--grey)}
.mobile-nav__body{padding:22px var(--gutter) 40px;display:grid;gap:4px}
.mobile-nav__body a{font-size:17px;color:var(--navy);padding:13px 4px;border-bottom:1px solid var(--grey)}
.mobile-nav__body a:last-of-type{border-bottom:0}
.mobile-nav__cta{display:grid;gap:10px;margin-top:20px}
@media (max-width:1080px){.mobile-nav{display:flex}}
@media (min-width:1081px){.mobile-nav{display:none!important}}