/* TankMate — shared styles. Palette from the TankMate app brand system. */
:root{
  --navy:#082a3d; --deep:#0B3D5C; --teal:#0E7C86; --teal-2:#0a5f68; --teal-soft:#7fd4de;
  --aqua:#16A0A8; --coral:#E8613C; --coral-dark:#c44a28; --green:#1E7E48; --green-soft:#5ec97a;
  --text:#eef7fa; --muted:#a9c2cd; --ink:#12303B; --ink-muted:#5b7683;
  --card:#ffffff; --line:rgba(255,255,255,.14); --light:#F5FAFB; --light-line:#dde7ec;
  --shadow:0 24px 64px rgba(4,18,28,.4);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;min-height:100vh;overflow-x:hidden;color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,Helvetica,sans-serif;
  background:radial-gradient(circle at 82% 8%,rgba(18,138,153,.35),transparent 40%),radial-gradient(circle at 10% 4%,rgba(226,102,74,.12),transparent 30%),linear-gradient(170deg,var(--deep) 0%,var(--navy) 55%,#06202f 100%);
  background-attachment:fixed}
a{color:inherit}
img{max-width:100%;display:block}
.skip-link{position:absolute;top:-60px;left:18px;z-index:100;padding:12px 16px;border-radius:10px;background:#fff;color:var(--ink);font-weight:800;text-decoration:none}
.skip-link:focus{top:18px}
.wrap{width:min(1140px,calc(100% - 36px));margin:0 auto}
/* nav */
.nav{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 0}
.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;color:#fff}
.brand img{width:44px;height:44px;border-radius:12px;box-shadow:var(--shadow)}
.brand b{font-weight:800;font-size:19px;letter-spacing:-.01em}
.nav-links{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.nav-links a{padding:9px 14px;border-radius:999px;text-decoration:none;color:var(--text);font-weight:700;font-size:14.5px}
.nav-links a:hover{background:rgba(255,255,255,.12)}
.nav-links a.cta{background:var(--coral);color:#fff}
.nav-links a.cta:hover{background:var(--coral-dark)}
/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:56px;padding:0 26px;border:0;border-radius:14px;font-family:inherit;font-weight:800;font-size:17px;text-decoration:none;cursor:pointer;transition:transform .15s ease,background .15s ease,filter .15s ease}
.btn-coral{background:var(--coral);color:#fff;box-shadow:var(--shadow)}
.btn-coral:hover{background:var(--coral-dark);transform:translateY(-2px)}
.btn-teal{background:var(--teal);color:#fff;box-shadow:var(--shadow)}
.btn-teal:hover{background:var(--teal-2);transform:translateY(-2px)}
.btn-ghost{background:rgba(255,255,255,.1);color:#fff;border:1px solid var(--line)}
.btn-ghost:hover{background:rgba(255,255,255,.18);transform:translateY(-2px)}
/* store badges */
.stores{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.store-badge{display:inline-flex;align-items:center;gap:11px;min-height:58px;padding:0 20px;border-radius:13px;background:#02121a;border:1px solid rgba(255,255,255,.22);color:#fff;text-decoration:none;transition:transform .15s ease,border-color .15s ease}
.store-badge:hover{transform:translateY(-2px);border-color:var(--teal-soft)}
.store-badge svg{width:26px;height:26px;flex:0 0 auto}
.store-badge .sc{display:grid;line-height:1.05}
.store-badge .sc small{font-size:10.5px;font-weight:700;opacity:.85}
.store-badge .sc strong{font-size:18px;letter-spacing:-.02em}
.soon-tag{display:inline-flex;align-items:center;gap:7px;padding:6px 13px;border-radius:999px;background:rgba(226,102,74,.16);border:1px solid rgba(226,102,74,.5);color:#ffd9cf;font-size:13px;font-weight:800}
.soon-tag::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--coral);box-shadow:0 0 12px var(--coral)}
/* hero */
.hero{padding:24px 0 10px}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:38px;align-items:center}
.hero h1{margin:16px 0 0;font-size:clamp(38px,5.6vw,66px);line-height:1.03;letter-spacing:-.035em}
.hero h1 .hl{color:var(--teal-soft)}
.hero .lead{margin:20px 0 0;max-width:54ch;color:var(--muted);font-size:clamp(17px,1.9vw,21px);line-height:1.55}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}
.hero-note{margin:16px 0 0;color:var(--muted);font-size:14px;font-weight:600}
.hero-art{position:relative;display:grid;place-items:center}
.hero-art img{width:min(420px,92%);border-radius:26px;filter:drop-shadow(0 34px 50px rgba(3,16,25,.55))}
/* sections */
.section{padding:60px 0}
.section-head{max-width:760px;margin:0 auto 36px;text-align:center}
.kicker{display:inline-block;margin:0 0 12px;color:var(--navy);background:var(--teal-soft);padding:6px 14px;border-radius:999px;font-size:12.5px;font-weight:900;letter-spacing:.09em;text-transform:uppercase}
.section-head h2{margin:0;font-size:clamp(30px,4.4vw,48px);line-height:1.05;letter-spacing:-.035em}
.section-head p{margin:14px auto 0;max-width:60ch;color:var(--muted);font-size:18px;line-height:1.55}
/* feature grid */
.features{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.feature{padding:24px;border-radius:20px;background:rgba(255,255,255,.07);border:1px solid var(--line);box-shadow:var(--shadow)}
.feature .ic{font-size:30px;width:52px;height:52px;border-radius:14px;display:grid;place-items:center;background:rgba(18,138,153,.22);margin-bottom:14px}
.feature h3{margin:0 0 8px;font-size:18px;letter-spacing:-.02em}
.feature p{margin:0;color:var(--muted);font-size:14.5px;line-height:1.55}
/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;max-width:960px;margin:0 auto}
.step{position:relative;padding:28px 24px;border-radius:20px;background:rgba(255,255,255,.07);border:1px solid var(--line)}
.step .n{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:var(--coral);color:#fff;font-weight:900;margin-bottom:14px}
.step h3{margin:0 0 8px;font-size:20px}
.step p{margin:0;color:var(--muted);line-height:1.55;font-size:15px}
/* gallery */
.gallery{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.gallery figure{margin:0}
.gallery img{width:100%;border-radius:16px;border:1px solid var(--line);box-shadow:var(--shadow)}
.gallery figcaption{margin-top:10px;text-align:center;color:var(--muted);font-size:13px;font-weight:700}
/* pricing */
.pricing{display:grid;grid-template-columns:1fr 1fr;gap:18px;max-width:820px;margin:0 auto}
.plan{padding:30px;border-radius:22px;background:rgba(255,255,255,.07);border:1px solid var(--line);box-shadow:var(--shadow)}
.plan.pro{background:linear-gradient(180deg,rgba(18,138,153,.25),rgba(255,255,255,.05));border-color:rgba(127,212,222,.4)}
.plan h3{margin:0;font-size:22px}
.plan .price{margin:12px 0 4px;font-size:40px;font-weight:900;letter-spacing:-.03em}
.plan .price small{font-size:16px;font-weight:700;color:var(--muted)}
.plan .sub{color:var(--muted);font-size:14px;margin:0 0 16px}
.plan ul{list-style:none;padding:0;margin:0}
.plan li{padding:9px 0 9px 28px;position:relative;color:var(--text);font-size:15px;border-top:1px solid var(--line)}
.plan li::before{content:"✓";position:absolute;left:0;color:var(--green-soft);font-weight:900}
.plan .tag{display:inline-block;margin-bottom:10px;padding:5px 12px;border-radius:999px;font-size:12px;font-weight:900;letter-spacing:.06em;text-transform:uppercase}
.plan.free .tag{background:rgba(255,255,255,.14);color:#fff}
.plan.pro .tag{background:var(--coral);color:#fff}
.fineprint{max-width:820px;margin:16px auto 0;color:var(--ink-muted);color:#8fa9b5;font-size:13px;text-align:center;line-height:1.5}
/* faq */
.faq{max-width:820px;margin:0 auto}
.faq details{border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.06);padding:2px 20px;margin-bottom:12px}
.faq summary{cursor:pointer;padding:16px 0;font-size:17px;font-weight:700;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--teal-soft);font-weight:900}
.faq details[open] summary::after{content:"\2013"}
.faq details p{margin:0 0 16px;color:var(--muted);line-height:1.6}
/* band / cta */
.band{padding:clamp(30px,5vw,54px);border-radius:28px;text-align:center;background:radial-gradient(circle at 80% 12%,rgba(226,102,74,.2),transparent 40%),rgba(255,255,255,.05);border:1px solid var(--line);box-shadow:var(--shadow)}
.band h2{margin:0 auto;max-width:22ch;font-size:clamp(28px,4.2vw,46px);line-height:1.05;letter-spacing:-.03em}
.band p{margin:14px auto 0;max-width:56ch;color:var(--muted);font-size:18px;line-height:1.55}
.band .hero-cta{justify-content:center;margin-top:26px}
/* page head */
.page-head{text-align:center;padding:28px 0 8px}
.page-head h1{margin:0;font-size:clamp(36px,5.6vw,64px);line-height:1.03;letter-spacing:-.035em}
.page-head .lead{margin:16px auto 0;max-width:60ch;color:var(--muted);font-size:19px;line-height:1.55}
/* partner selling points */
.sell{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.sell .card{padding:26px;border-radius:20px;background:rgba(255,255,255,.07);border:1px solid var(--line)}
.sell .ic{font-size:28px;margin-bottom:12px}
.sell h3{margin:0 0 8px;font-size:19px}
.sell p{margin:0;color:var(--muted);line-height:1.55;font-size:15px}
.note-box{max-width:820px;margin:26px auto 0;padding:18px 22px;border-radius:16px;background:rgba(226,102,74,.1);border:1px dashed rgba(226,102,74,.45);color:#ffe2da;font-size:14.5px;line-height:1.6}
/* form */
.form-wrap{max-width:720px;margin:0 auto;padding:clamp(26px,4vw,42px);border-radius:24px;background:var(--card);color:var(--ink);box-shadow:var(--shadow)}
.form-wrap h2{margin:0 0 6px;font-size:26px;color:var(--ink)}
.form-wrap .sub{margin:0 0 22px;color:var(--ink-muted);font-size:15px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1 / -1}
.field label{font-size:13.5px;font-weight:800;color:var(--ink)}
.field input,.field textarea{font-family:inherit;font-size:15px;padding:12px 14px;border:1px solid var(--light-line);border-radius:11px;background:#fbfdfe;color:var(--ink)}
.field input:focus,.field textarea:focus{outline:2px solid var(--teal);border-color:var(--teal)}
.field textarea{min-height:110px;resize:vertical}
.form-actions{margin-top:20px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.form-note{color:var(--ink-muted);font-size:13px;line-height:1.5}
/* footer */
.footer{margin-top:60px;padding:40px 0 56px;border-top:1px solid var(--line)}
.footer-cols{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px}
.footer h5{margin:0 0 12px;font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;color:#8fa9b5}
.footer a{display:block;color:#c6dde5;text-decoration:none;font-size:14px;padding:5px 0}
.footer a:hover{color:#fff}
.footer .about{color:#8fa9b5;font-size:14px;line-height:1.6;max-width:34ch}
.footer-bottom{margin-top:30px;padding-top:18px;border-top:1px solid var(--line);color:#7d97a3;font-size:13px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}
@media(max-width:980px){
  .hero-inner{grid-template-columns:1fr;text-align:center}
  .hero-art{order:-1}.hero .lead{margin-left:auto;margin-right:auto}.hero-cta,.stores{justify-content:center}
  .features{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr}
  .gallery{grid-template-columns:repeat(3,1fr)}
  .pricing{grid-template-columns:1fr}
  .sell{grid-template-columns:1fr}
  .footer-cols{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .nav-links a:not(.cta){display:none}
  .features{grid-template-columns:1fr}
  .gallery{grid-template-columns:1fr 1fr}
  .form-grid{grid-template-columns:1fr}
  .footer-cols{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.btn,.store-badge{transition:none}}

/* Reef guide articles */
.article{max-width:760px;margin:0 auto}
.article .meta{color:var(--muted);font-size:14px;font-weight:600;margin:0 0 6px}
.ptable{width:100%;border-collapse:collapse;margin:8px 0 4px}
.ptable th,.ptable td{text-align:left;padding:11px 14px;border-bottom:1px solid rgba(255,255,255,.16);font-size:15px}
.ptable th{color:var(--teal-soft);font-weight:800}
.related{max-width:760px;margin:36px auto 0;display:grid;grid-template-columns:1fr 1fr;gap:14px}
.related a{display:block;padding:18px;border:1px solid var(--line);border-radius:16px;background:rgba(255,255,255,.06);text-decoration:none;color:var(--text);font-weight:700;line-height:1.4}
.related a:hover{background:rgba(255,255,255,.12)}
@media(max-width:640px){.related{grid-template-columns:1fr}}

/* Reef guides grid (on landing) */
.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.guide-grid a.feature{display:block;text-decoration:none}
.guide-grid a.feature:hover{border-color:var(--teal-soft)}
@media(max-width:900px){.guide-grid{grid-template-columns:1fr}}