/* Pure Branch Water Treatment — Blog styles (matched to main site theme) */
:root{
  --navy:#0d1f3c; --navy2:#162D55; --navy3:#1a3d70;
  --blue:#1a7fc1; --blue2:#2196d3; --blue3:#4AB8E8; --blue4:#90d9f7;
  --teal:#0A9396; --teal2:#48CAE4; --teal3:#90e0ef; --teal4:#caf0f8;
  --green:#2C5018; --green3:#52a020;
  --accent:#e8900e; --accent2:#f7c030;
  --text:#0d1f2d; --muted:#46606e; --line:#dbecf4; --white:#fff;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Open Sans',system-ui,sans-serif;color:var(--text);line-height:1.7;
  background:linear-gradient(180deg,#e9f6fd 0%,#f2fbff 40%,#fafeff 100%);background-attachment:fixed;overflow-x:hidden}
h1,h2,h3,h4{font-family:'Oswald',sans-serif;letter-spacing:.5px;line-height:1.2;color:var(--navy2)}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}

@keyframes cta-glow{
  0%,100%{box-shadow:0 6px 28px rgba(232,144,14,.55),0 0 0 0 rgba(247,192,48,.35)}
  50%{box-shadow:0 10px 38px rgba(232,144,14,.75),0 0 0 16px rgba(247,192,48,0)}
}
@keyframes bubbleup{0%{transform:translateY(0) scale(1);opacity:.6}100%{transform:translateY(-260px) scale(.85);opacity:0}}

/* ===== NAV (matches site) ===== */
nav{position:sticky;top:0;z-index:1000;height:72px;display:flex;align-items:center;justify-content:space-between;
  padding:0 2rem;background:linear-gradient(90deg,#0e2848 0%,#1a3c60 50%,#1e4470 100%);
  border-bottom:1px solid rgba(74,184,232,.25);box-shadow:0 2px 30px rgba(0,0,0,.5),0 0 60px rgba(10,147,150,.08)}
nav .brand img{height:50px;width:auto}
nav ul{display:flex;gap:1.8rem;list-style:none;align-items:center}
nav ul a{color:rgba(255,255,255,.82);font-size:.84rem;font-weight:600;text-transform:uppercase;letter-spacing:.6px}
nav ul a:hover{color:var(--teal2);text-decoration:none}
nav ul .cta{background:linear-gradient(135deg,var(--blue),var(--teal));color:#fff;padding:.45rem 1.15rem;border-radius:5px;
  box-shadow:0 2px 14px rgba(10,147,150,.45)}
nav ul .cta:hover{transform:translateY(-1px)}
@media(max-width:760px){nav ul li:not(.keep){display:none}}

/* ===== UNDERWATER PAGE HEADER ===== */
.page-head{position:relative;overflow:hidden;text-align:center;color:#fff;padding:78px 1.6rem 110px;
  background:linear-gradient(180deg,#102848 0%,#1a4878 28%,#1e6098 62%,#1e80b8 100%)}
.page-head::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(ellipse at 80% 20%,rgba(144,224,239,.18),transparent 45%),
            radial-gradient(ellipse at 15% 75%,rgba(10,147,150,.16),transparent 50%)}
/* animated rising bubbles (CSS-only) */
.page-head i{position:absolute;bottom:30px;border-radius:50%;
  background:radial-gradient(circle at 30% 28%,rgba(255,255,255,.9),rgba(255,255,255,.35) 35%,transparent 70%);
  border:1.5px solid rgba(255,255,255,.45);animation:bubbleup linear infinite;pointer-events:none}
.page-head i:nth-child(1){left:10%;width:18px;height:18px;animation-duration:9s;animation-delay:0s}
.page-head i:nth-child(2){left:24%;width:11px;height:11px;animation-duration:11s;animation-delay:2s}
.page-head i:nth-child(3){left:42%;width:24px;height:24px;animation-duration:8s;animation-delay:4s}
.page-head i:nth-child(4){left:58%;width:13px;height:13px;animation-duration:12s;animation-delay:1s}
.page-head i:nth-child(5){left:73%;width:20px;height:20px;animation-duration:10s;animation-delay:3s}
.page-head i:nth-child(6){left:88%;width:14px;height:14px;animation-duration:9s;animation-delay:5s}
/* wave divider into the page body */
.page-head::after{content:"";position:absolute;bottom:-1px;left:0;right:0;height:90px;background-repeat:no-repeat;
  background-position:bottom;background-size:100% 90px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 90' preserveAspectRatio='none'%3E%3Cpath d='M0,45 C240,90 480,5 720,35 C960,65 1200,12 1440,42 L1440,90 L0,90 Z' fill='%23eef9fe'/%3E%3C/svg%3E")}
.page-head .eyebrow{position:relative;z-index:2;display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:2.5px;
  text-transform:uppercase;color:#fff;padding:.42rem 1.4rem;border-radius:20px;margin-bottom:1.1rem;
  background:linear-gradient(135deg,rgba(10,147,150,.8),rgba(26,127,193,.8));border:1px solid rgba(144,224,239,.3);
  backdrop-filter:blur(8px);box-shadow:0 4px 16px rgba(0,0,0,.3)}
.page-head h1{position:relative;z-index:2;color:#fff;font-size:clamp(2.1rem,5vw,3rem);margin-bottom:.7rem;
  text-shadow:0 2px 20px rgba(0,0,0,.5)}
.page-head p{position:relative;z-index:2;color:rgba(255,255,255,.88);max-width:640px;margin:0 auto;font-size:1.06rem;
  text-shadow:0 1px 6px rgba(0,0,0,.35)}

/* ===== WRAP ===== */
.wrap{max-width:1160px;margin:0 auto;padding:10px 1.6rem 60px}

/* ===== BLOG INDEX CARDS (frosted, like service cards) ===== */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(330px,1fr));gap:1.8rem}
.card{background:rgba(255,255,255,.86);backdrop-filter:blur(12px);border-radius:16px;overflow:hidden;
  border:1px solid rgba(144,224,239,.4);box-shadow:0 10px 34px rgba(13,31,60,.12),inset 0 1px 0 rgba(255,255,255,.9);
  transition:transform .28s,box-shadow .28s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-7px);box-shadow:0 22px 52px rgba(13,31,60,.2),inset 0 1px 0 rgba(255,255,255,.9)}
.card .cardtop{height:120px;position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center}
.card .cardtop::before{content:"";position:absolute;bottom:-40px;right:-40px;width:150px;height:150px;border-radius:50%;
  border:20px solid rgba(255,255,255,.09)}
.card:nth-child(1) .cardtop{background:linear-gradient(135deg,#0a1f4e,#1a5799)}
.card:nth-child(2) .cardtop{background:linear-gradient(135deg,#063040,#0A9396)}
.card:nth-child(3) .cardtop{background:linear-gradient(135deg,#0d3060,#1a7fc1 80%,#48CAE4 150%)}
.card:nth-child(4) .cardtop{background:linear-gradient(135deg,#1a3010,#2C5018 60%,#3a7a20)}
.card .cardtop span{position:relative;z-index:2;font-family:'Oswald';color:#fff;font-size:.74rem;letter-spacing:1.5px;
  text-transform:uppercase;background:rgba(0,0,0,.22);padding:6px 15px;border-radius:999px;border:1px solid rgba(255,255,255,.25)}
.card .body{padding:24px;display:flex;flex-direction:column;flex:1}
.card h2{font-size:1.34rem;margin-bottom:11px;line-height:1.25}
.card h2 a{color:var(--navy2)}
.card h2 a:hover{color:var(--blue);text-decoration:none}
.card p{color:var(--muted);font-size:.97rem;flex:1}
.card .read{margin-top:18px;font-family:'Oswald';font-weight:600;letter-spacing:.5px;color:var(--teal);font-size:.92rem;text-transform:uppercase}

/* ===== ARTICLE ===== */
.article{max-width:820px;margin:0 auto;background:#fff;border-radius:18px;
  box-shadow:0 16px 50px rgba(13,31,60,.13);border:1px solid rgba(144,224,239,.35);
  padding:48px 54px;}
.breadcrumb{font-size:.82rem;color:var(--muted);margin-bottom:18px;text-transform:uppercase;letter-spacing:.5px}
.breadcrumb a{color:var(--teal)}
.article h1{font-size:clamp(1.7rem,3.5vw,2.4rem);color:var(--navy);margin-bottom:14px}
.meta{color:var(--muted);font-size:.9rem;border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:30px}
.meta .cat{color:var(--teal);font-weight:700;text-transform:uppercase;letter-spacing:1px}
.article p{margin:0 0 18px;font-size:1.07rem}
.article h2{font-size:1.55rem;margin:36px 0 12px;color:var(--navy2);position:relative;padding-left:16px}
.article h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:5px;border-radius:3px;
  background:linear-gradient(180deg,var(--blue),var(--teal))}
.article h3{font-size:1.2rem;margin:24px 0 8px;color:var(--navy3)}
.article ul,.article ol{margin:0 0 18px 1.3rem}
.article li{margin-bottom:9px}
.article strong{color:var(--navy)}
.callout{background:linear-gradient(135deg,rgba(202,240,248,.9),rgba(144,224,239,.45));
  border:1.5px solid rgba(10,147,150,.3);border-left:5px solid var(--teal);border-radius:0 12px 12px 0;
  padding:16px 20px;margin:24px 0;box-shadow:inset 0 1px 0 rgba(255,255,255,.8)}
.callout p:last-child{margin-bottom:0}

/* CTA box (deep ocean + glowing orange button, like the site) */
.cta-box{position:relative;overflow:hidden;border-radius:18px;padding:34px;margin:40px 0;text-align:center;
  background:linear-gradient(185deg,#0e2448 0%,#1a3c70 45%,#1e5490 100%)}
.cta-box::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(ellipse at 20% 30%,rgba(74,184,232,.16),transparent 55%),
            radial-gradient(ellipse at 85% 70%,rgba(10,147,150,.14),transparent 55%)}
.cta-box h3{position:relative;color:#fff;font-size:1.55rem;margin-bottom:8px}
.cta-box p{position:relative;color:rgba(255,255,255,.8);margin-bottom:20px}
.cta-box a{position:relative;display:inline-block;background:linear-gradient(135deg,var(--accent2),var(--accent));
  color:#0a1828;font-family:'Oswald';font-weight:700;letter-spacing:1px;text-transform:uppercase;
  padding:14px 30px;border-radius:6px;animation:cta-glow 2.5s ease-in-out infinite}
.cta-box a:hover{text-decoration:none;transform:translateY(-2px)}

/* Related */
.related{border-top:1px solid var(--line);margin-top:42px;padding-top:24px}
.related h3{font-family:'Oswald';font-size:.8rem;letter-spacing:2.5px;text-transform:uppercase;color:var(--teal);margin-bottom:12px}
.related a{display:block;padding:9px 0;font-weight:600;color:var(--navy2)}
.related a:hover{color:var(--blue)}

/* ===== FOOTER (matches site) ===== */
footer{background:linear-gradient(135deg,#081a30,#0d2748);color:#9fc0d6;padding:46px 1.6rem;text-align:center;font-size:.92rem;margin-top:30px}
footer img{height:56px;margin-bottom:14px}
footer a{color:#bcd9ec}
footer .fbot{margin-top:18px;border-top:1px solid #123e5c;padding-top:16px;font-size:.85rem;color:#7ea3bd}

@media(max-width:760px){
  .page-head{padding:60px 1.4rem 90px}
  .article{padding:34px 22px}
}