:root{
  --ink:#10292E;        /* deep kelp */
  --tide:#0F5560;       /* tidewater teal */
  --sea:#2A8C8A;        /* shallow sea */
  --foam:#EEF4F2;       /* foam */
  --mist:#DCE8E4;
  --agar:#E2A93B;       /* agar amber — inhibition-zone accent */
  --paper:#FBFDFC;
  --muted:#4F6A6E;
  --line:#C9DAD5;
  --display:"Bricolage Grotesque",system-ui,sans-serif;
  --body:"Public Sans",system-ui,sans-serif;
  --wrap:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--tide)}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid var(--agar);outline-offset:3px}
h1,h2,h3,h4{font-family:var(--display);line-height:1.08;letter-spacing:-.015em;margin:0 0 .5em;font-weight:650}
h1{font-size:clamp(2.6rem,6.2vw,5rem);font-weight:700;letter-spacing:-.03em}
h2{font-size:clamp(1.9rem,3.6vw,2.9rem)}
h3{font-size:1.35rem}
p{margin:0 0 1em;max-width:66ch}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:#fff;padding:8px 14px;z-index:99}
.skip:focus{left:8px}

/* header */
.site-head{position:sticky;top:0;z-index:40;background:rgba(251,253,252,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-family:var(--display);font-weight:700;font-size:1.45rem;letter-spacing:-.02em}
.brand svg{width:34px;height:34px}
.nav{display:flex;gap:4px;align-items:center}
.nav a{text-decoration:none;color:var(--ink);padding:8px 12px;border-radius:6px;font-weight:500;font-size:.98rem}
.nav a:hover{background:var(--foam)}
.nav a[aria-current=page]{color:var(--tide);box-shadow:inset 0 -2px 0 var(--sea);border-radius:0}
.nav .btn{margin-left:10px}
.menu-btn{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:8px 12px;font:inherit;color:var(--ink);cursor:pointer}
@media (max-width:900px){
  .menu-btn{display:block}
  .nav{display:none;position:absolute;top:72px;left:0;right:0;background:var(--paper);flex-direction:column;align-items:stretch;padding:12px 24px 20px;border-bottom:1px solid var(--line)}
  .nav.open{display:flex}
  .nav a{padding:12px 4px;border-bottom:1px solid var(--mist)}
  .nav a[aria-current=page]{box-shadow:none}
  .nav .btn{margin:12px 0 0;text-align:center}
}

/* buttons */
.btn{display:inline-block;background:var(--tide);color:#fff!important;text-decoration:none;font-weight:600;padding:12px 22px;border-radius:999px;border:2px solid var(--tide);font-size:1rem;cursor:pointer;font-family:var(--body)}
.btn:hover{background:var(--ink);border-color:var(--ink)}
.btn.ghost{background:transparent;color:var(--tide)!important}
.btn.ghost:hover{background:var(--foam)}
.btn.on-dark{background:var(--agar);border-color:var(--agar);color:var(--ink)!important}
.btn.on-dark:hover{background:#f0bf5e;border-color:#f0bf5e}

/* hero */
.hero{position:relative;overflow:hidden;background:var(--ink);color:#EAF4F1}
.hero .wrap{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;min-height:620px;padding-top:72px;padding-bottom:80px}
.hero h1{color:#fff;max-width:13ch}
.hero .lede{font-size:1.2rem;color:#C7DDD8;max-width:46ch}
.hero .ctas{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.hero .ctas .ghost{color:#fff!important;border-color:#5f8f8d}
.hero .ctas .ghost:hover{background:rgba(255,255,255,.08)}
.zone{width:100%;max-width:460px;justify-self:center;display:block;margin:0 auto}
.zone circle{transform-origin:center;transform-box:fill-box}
.zone .ring{fill:none;stroke:#2A8C8A;opacity:0;animation:ripple 1.6s .3s cubic-bezier(.2,.7,.2,1) forwards}
.zone .halo{fill:var(--agar);opacity:0;animation:halo 1.4s .3s ease-out forwards}
.zone .core{fill:#F6E7C2}
.zone .lbl{opacity:0;animation:fadein .6s 1.3s forwards}
@keyframes ripple{from{opacity:0;transform:scale(.3)}to{opacity:1;transform:scale(1)}}
@keyframes halo{from{opacity:0;transform:scale(.3)}to{opacity:.25;transform:scale(1)}}
@keyframes fadein{to{opacity:1}}
.zone-caption{font-size:1.15rem;font-weight:500;color:#E3F0EC;text-align:center;margin:18px auto 0;max-width:48ch;line-height:1.5}
@media (max-width:900px){.hero .wrap{grid-template-columns:1fr;min-height:0;padding-top:56px}.zone{max-width:300px}}

/* page header (inner pages) */
.page-head{background:var(--ink);color:#EAF4F1;padding:72px 0 64px}
.page-head h1{font-size:clamp(2.3rem,5vw,3.8rem);color:#fff;max-width:20ch}
.page-head p{color:#C7DDD8;font-size:1.15rem;max-width:58ch;margin:0}

/* sections */
section{padding:96px 0}
section.tint{background:var(--foam)}
.section-intro{max-width:720px;margin-bottom:48px}
.section-intro p{color:var(--muted);font-size:1.1rem}
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.split.wide-left{grid-template-columns:1.2fr .8fr}
@media (max-width:900px){.split,.split.wide-left{grid-template-columns:1fr;gap:36px}section{padding:68px 0}}

/* proof strip */
.proof{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.proof div{padding:28px 24px;border-left:1px solid var(--line)}
.proof div:first-child{border-left:0;padding-left:0}
.proof strong{display:block;font-family:var(--display);font-size:2.3rem;font-weight:650;color:var(--tide);line-height:1.1}
.proof span{font-size:.95rem;color:var(--muted)}
@media (max-width:820px){.proof{grid-template-columns:1fr 1fr}.proof div:nth-child(3){border-left:0;padding-left:0}.proof div{border-top:1px solid var(--line)}.proof div:nth-child(-n+2){border-top:0}}

/* feature list (non-card) */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:48px 40px}
.features h3{font-size:1.2rem;margin-bottom:.35em}
.features p{color:var(--muted);margin:0;font-size:.98rem}
.features .mark{width:28px;height:28px;margin-bottom:14px;color:var(--sea)}
@media (max-width:900px){.features{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.features{grid-template-columns:1fr}}

/* species row */
.species{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--paper)}
.species div{padding:26px 22px;border-left:1px solid var(--line)}
.species div:first-child{border-left:0}
.species h3{font-size:1.1rem;margin-bottom:.4em}
.species p{font-size:.92rem;color:var(--muted);margin:0}
@media (max-width:900px){.species{grid-template-columns:1fr 1fr}.species div{border-left:0;border-top:1px solid var(--line)}.species div:nth-child(-n+2){border-top:0}.species div:nth-child(even){border-left:1px solid var(--line)}}
@media (max-width:560px){.species{grid-template-columns:1fr}.species div{border-left:0!important;border-top:1px solid var(--line)!important}.species div:first-child{border-top:0!important}}

/* figures */
figure{margin:0}
figure img{border-radius:12px;width:100%;height:auto}
figcaption{font-size:.88rem;color:var(--muted);margin-top:10px}
.photo-pair{display:grid;grid-template-columns:1.3fr 1fr;gap:16px}
.photo-pair img{height:100%;object-fit:cover;aspect-ratio:auto}

/* product blocks */
.product{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;padding:56px 0;border-top:1px solid var(--line)}
.product:first-of-type{border-top:0;padding-top:0}
.product .tag{display:inline-block;font-size:.85rem;font-weight:600;color:var(--tide);background:var(--mist);padding:4px 12px;border-radius:999px;margin-bottom:14px}
.spec{width:100%;border-collapse:collapse;font-size:.96rem;margin-top:8px}
.spec th,.spec td{text-align:left;padding:12px 0;border-bottom:1px solid var(--line);vertical-align:top}
.spec th{width:38%;color:var(--muted);font-weight:500;padding-right:16px}
@media (max-width:900px){.product{grid-template-columns:1fr;gap:28px}}

/* comparison bars */
.trial{padding:44px 0;border-top:1px solid var(--line);display:grid;grid-template-columns:.85fr 1.15fr;gap:56px}
.trial:first-of-type{border-top:0}
.trial .meta{font-size:.95rem;color:var(--muted)}
.trial .meta dl{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;margin:16px 0 0}
.trial .meta dt{font-weight:600;color:var(--ink)}
.trial .meta dd{margin:0}
.metric{margin-bottom:26px}
.metric:last-child{margin-bottom:0}
.metric-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:8px}
.metric-head b{font-weight:600}
.delta{font-family:var(--display);font-weight:650;color:var(--tide);font-size:1.15rem;white-space:nowrap}
.bar{display:grid;grid-template-columns:76px 1fr 64px;align-items:center;gap:10px;font-size:.88rem;margin:4px 0}
.bar .track{height:12px;background:var(--mist);border-radius:6px;overflow:hidden}
.bar .fill{height:100%;border-radius:6px;background:#9DB3AF}
.bar.d68 .fill{background:var(--tide)}
.bar .v{text-align:right;font-variant-numeric:tabular-nums}
.note{font-size:.85rem;color:var(--muted)}
@media (max-width:900px){.trial{grid-template-columns:1fr;gap:24px}}

table.data{width:100%;border-collapse:collapse;font-size:.95rem;font-variant-numeric:tabular-nums}
table.data th,table.data td{padding:11px 12px;border-bottom:1px solid var(--line);text-align:right}
table.data th:first-child,table.data td:first-child{text-align:left;padding-left:0}
table.data thead th{font-weight:600;border-bottom:2px solid var(--ink)}
.table-scroll{overflow-x:auto}

/* steps (true sequence) */
.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(5,1fr);gap:0;counter-reset:s}
.steps li{padding:22px 20px 0 0;border-top:3px solid var(--sea);counter-increment:s;position:relative}
.steps li::before{content:counter(s);font-family:var(--display);font-weight:700;color:var(--sea);font-size:1.1rem;display:block;margin-bottom:8px}
.steps h3{font-size:1.05rem}
.steps p{font-size:.92rem;color:var(--muted);margin:0}
@media (max-width:900px){.steps{grid-template-columns:1fr 1fr;gap:28px 20px}}
@media (max-width:560px){.steps{grid-template-columns:1fr}}

/* compare table */
.compare{width:100%;border-collapse:collapse}
.compare th,.compare td{padding:16px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;font-size:.97rem}
.compare thead th{font-family:var(--display);font-size:1.1rem;border-bottom:2px solid var(--ink)}
.compare tbody th{font-weight:600;width:18%}
.compare td.us{background:rgba(42,140,138,.08)}

/* callout band */
.band{background:var(--tide);color:#E6F2EF}
.band h2{color:#fff;max-width:22ch}
.band p{color:#CFE4DF}
.band .wrap{display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap}

/* contact */
.form{display:grid;gap:18px;max-width:560px}
.form label{font-weight:600;font-size:.95rem;display:block;margin-bottom:6px}
.form input,.form textarea,.form select{width:100%;font:inherit;padding:12px 14px;border:1px solid #9DB3AF;border-radius:8px;background:#fff;color:var(--ink)}
.form textarea{min-height:140px;resize:vertical}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:600px){.form .row{grid-template-columns:1fr}}
.contact-list{list-style:none;padding:0;margin:0}
.contact-list li{padding:18px 0;border-bottom:1px solid var(--line)}
.contact-list b{display:block;font-size:.9rem;color:var(--muted);font-weight:500}

/* footer */
.site-foot{background:var(--ink);color:#A9C4BF;padding:64px 0 36px;font-size:.93rem}
.site-foot a{color:#DCECE8;text-decoration:none}
.site-foot a:hover{text-decoration:underline}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;margin-bottom:40px}
.foot-grid ul{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.site-foot .brand{color:#fff;margin-bottom:12px}
.disclaimer{border-top:1px solid #23474d;padding-top:24px;font-size:.82rem;color:#88A7A1;max-width:none}
@media (max-width:760px){.foot-grid{grid-template-columns:1fr}}
.foot-head{color:#fff;font-weight:600;margin-bottom:10px;display:block}
@media (prefers-reduced-motion:reduce){.zone .ring,.zone .lbl{opacity:1}.zone .halo{opacity:.25}}