@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;600;700&display=swap');

:root{
  --ink:#22304a;
  --muted:#586780;
  --paper:#fffdf9;
  --cream:#fff7ec;
  --line:#d9e1e7;
  --teal:#34d6b0;
  --teal-dark:#118f79;
  --sky:#5ab0f5;
  --sun:#ffc94d;
  --coral:#ff7a6b;
  --lav:#b79cf0;
  --radius:8px;
  --shadow:0 16px 34px rgba(34,48,74,.10);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"Montserrat",system-ui,sans-serif;line-height:1.55;-webkit-font-smoothing:antialiased}
button,input,select{font:inherit}
a{color:inherit}
.skip-link{position:fixed;left:12px;top:12px;z-index:100;transform:translateY(-160%);background:var(--sun);padding:10px 14px;border:2px solid var(--ink);border-radius:6px;font-weight:700}
.skip-link:focus{transform:none}
.shell{width:min(1120px,calc(100% - 32px));margin-inline:auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,253,249,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.header-inner{min-height:68px;display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-size:.78rem;font-weight:700}
.brand img{width:30px;height:30px}
.brand span{font-size:.94rem}
.site-nav{margin-left:auto;display:flex;align-items:center;gap:6px}
.site-nav a{padding:9px 11px;text-decoration:none;font-size:.82rem;font-weight:600;border-radius:6px}
.site-nav a:hover,.site-nav a[aria-current="page"]{background:#eafaf5;color:#087763}
.menu-toggle{display:none;margin-left:auto;border:0;background:transparent;padding:8px;font-weight:700;color:var(--ink)}

.app-intro{padding:34px 0 24px;border-bottom:1px solid var(--line);background:#eefaf6}
.intro-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,360px);gap:40px;align-items:end}
.app-intro h1,.profile-head h1{font-size:clamp(2rem,5vw,3.65rem);line-height:1.02;margin:0 0 14px;letter-spacing:0}
.app-intro p,.profile-head p{max-width:680px;margin:0;color:var(--muted);font-size:1rem}
.quick-select label{display:block;margin-bottom:8px;font-size:.76rem;font-weight:700;text-transform:uppercase}
.select-row{display:flex;gap:8px}
select,input{min-width:0;width:100%;min-height:48px;border:1.5px solid #bcc8d2;border-radius:6px;background:#fff;color:var(--ink);padding:10px 12px;outline:none}
select:focus,input:focus{border-color:var(--teal-dark);box-shadow:0 0 0 3px rgba(52,214,176,.18)}
.icon-button{width:48px;min-width:48px;border:0;border-radius:6px;background:var(--ink);color:#fff;font-weight:700;cursor:pointer}

.workspace{padding:34px 0 64px}
.tool-layout{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(300px,.65fr);gap:28px;align-items:start}
.tool-panel{border:1px solid var(--line);background:#fff;border-radius:var(--radius);box-shadow:var(--shadow)}
.panel-head{padding:22px 24px 18px;border-bottom:1px solid var(--line)}
.panel-head h2{margin:0 0 5px;font-size:1.35rem}
.panel-head p{margin:0;color:var(--muted);font-size:.88rem}
.calculator-form{padding:22px 24px}
.field-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.field label{display:block;margin-bottom:7px;font-size:.78rem;font-weight:700}
.input-unit{position:relative}
.input-unit input{padding-right:48px}
.input-unit span{position:absolute;right:12px;top:50%;transform:translateY(-50%);font-size:.75rem;color:var(--muted);font-weight:700;pointer-events:none}
.segmented{display:flex;border:1.5px solid #bcc8d2;border-radius:6px;overflow:hidden;background:#fff}
.segmented button{flex:1;min-height:46px;border:0;background:#fff;color:var(--muted);font-size:.78rem;font-weight:700;cursor:pointer}
.segmented button[aria-pressed="true"]{background:var(--ink);color:#fff}
.results{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-top:1px solid var(--line)}
.result{padding:20px 24px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.result:nth-child(even){border-right:0}
.result:nth-last-child(-n+2){border-bottom:0}
.result span{display:block;color:var(--muted);font-size:.74rem;font-weight:700;text-transform:uppercase}
.result strong{display:block;margin-top:5px;font-size:1.55rem;line-height:1.1}
.result.primary{background:#eafaf5}
.calc-note{margin:0;padding:15px 24px;border-top:1px solid var(--line);color:var(--muted);font-size:.78rem}

.steps{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.step{display:grid;grid-template-columns:42px 1fr;gap:14px;background:#fff;padding:18px}
.step-num{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:var(--sun);font-weight:700}
.step h3{font-size:.98rem;margin:2px 0 4px}
.step p{margin:0;color:var(--muted);font-size:.82rem}
.caution{margin-top:16px;border-left:4px solid var(--coral);background:#fff3f0;padding:16px 18px;font-size:.82rem}

.library-band{padding:56px 0;background:var(--cream);border-top:1px solid #f0e1d1}
.workflow-band{padding:56px 0;background:var(--cream);border-top:1px solid #f0e1d1}
.charts-band{padding:56px 0;background:#fff;border-top:1px solid var(--line)}
.instruction-visual{margin:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.instruction-visual img{display:block;width:100%;height:auto}
.instruction-visual figcaption{padding:12px 16px;border-top:1px solid var(--line);color:var(--muted);font-size:.78rem}
.inline-calculator{margin:0 0 24px}
.section-head{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:22px}
.section-head h2{font-size:1.65rem;margin:0}
.section-head p{margin:0;color:var(--muted);font-size:.88rem}
.peptide-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.peptide-link{min-height:170px;padding:24px;text-decoration:none;border-right:1px solid var(--line);position:relative}
.peptide-link:last-child{border-right:0}
.peptide-link::before{content:"";position:absolute;left:0;right:0;top:0;height:5px;background:var(--accent)}
.peptide-link span{font-size:.72rem;font-weight:700;color:var(--muted)}
.peptide-link h3{font-size:1.28rem;margin:22px 0 6px}
.peptide-link p{margin:0;color:var(--muted);font-size:.82rem}
.peptide-link b{display:inline-block;margin-top:18px;color:var(--teal-dark);font-size:.78rem}

.profile-head{padding:40px 0 30px;background:#eefaf6;border-bottom:1px solid var(--line)}
.breadcrumbs{font-size:.74rem;margin-bottom:24px;color:var(--muted)}
.breadcrumbs a{text-decoration:none}
.profile-title-row{display:grid;grid-template-columns:1fr auto;gap:24px;align-items:end}
.profile-code{width:86px;height:86px;display:grid;place-items:center;border:2px solid var(--ink);border-radius:50%;background:var(--accent);font-weight:700;font-size:1.25rem;box-shadow:5px 5px 0 var(--ink)}
.profile-layout{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(280px,.8fr);gap:28px;padding:34px 0 56px}
.content-stack{display:grid;gap:24px;min-width:0}
.content-section{padding-bottom:24px;border-bottom:1px solid var(--line);min-width:0}
.content-section:last-child{border-bottom:0}
.content-section h2{font-size:1.25rem;margin:0 0 12px}
.content-section p{margin:0 0 12px;color:var(--muted);font-size:.9rem}
.fact-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.fact-list li{display:grid;grid-template-columns:130px 1fr;gap:16px;padding:12px 0;border-bottom:1px solid #edf0f2;font-size:.85rem}
.fact-list li:last-child{border-bottom:0}
.fact-list strong{font-size:.75rem;text-transform:uppercase}
.schedule{width:100%;border-collapse:collapse;font-size:.82rem}
.schedule th,.schedule td{text-align:left;padding:11px 10px;border-bottom:1px solid var(--line)}
.schedule th{background:#f4f7f8;font-size:.7rem;text-transform:uppercase}
.table-scroll{width:100%;max-width:100%;overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff;-webkit-overflow-scrolling:touch}
.table-scroll .schedule{min-width:680px}
.table-scroll .schedule th:first-child,.table-scroll .schedule td:first-child{position:sticky;left:0;background:#fff;font-weight:700;box-shadow:1px 0 0 var(--line)}
.table-scroll .schedule th:first-child{background:#f4f7f8}
.chart-note{margin-top:10px!important;font-size:.78rem!important}
.reference-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.reference-block{border:1px solid var(--line);border-radius:var(--radius);padding:16px;background:#fff}
.reference-block h3{margin:0 0 8px;font-size:.92rem}
.reference-block p{margin:0!important;font-size:.8rem!important}
.source-links{display:grid;gap:8px;margin:0;padding-left:18px;font-size:.82rem}
.source-links a{color:#087763;text-underline-offset:3px}
.sidebar{position:sticky;top:92px;display:grid;gap:18px}
.preset-note{padding:14px 18px;background:#edf6ff;border-left:4px solid var(--sky);font-size:.78rem;color:var(--muted)}

.disclaimer{padding:26px 0;background:var(--ink);color:#fff}
.disclaimer strong{display:block;margin-bottom:7px;color:var(--sun);font-size:.8rem;text-transform:uppercase}
.disclaimer p{margin:0;max-width:920px;font-size:.78rem;color:#e3e8ef}
.site-footer{padding:20px 0;background:#182238;color:#cfd6e0;font-size:.7rem}
.footer-inner{display:flex;justify-content:space-between;gap:20px;align-items:center}
.footer-inner a{color:#fff;text-decoration:none}

@media(max-width:820px){
  .site-nav{display:none;position:absolute;left:0;right:0;top:68px;padding:12px 16px 18px;background:var(--paper);border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch}
  .site-nav.open{display:flex}
  .menu-toggle{display:block}
  .intro-grid,.profile-title-row,.profile-layout,.tool-layout{grid-template-columns:1fr}
  .profile-code{display:none}
  .sidebar{position:static;order:-1}
  .peptide-list{grid-template-columns:1fr}
  .peptide-link{min-height:0;border-right:0;border-bottom:1px solid var(--line)}
  .peptide-link:last-child{border-bottom:0}
}

@media(max-width:560px){
  .shell{width:min(100% - 24px,1120px)}
  .app-intro{padding-top:26px}
  .field-grid{grid-template-columns:1fr 1fr}
  .field-dose{grid-column:1/-1}
  .calculator-form,.panel-head{padding-left:18px;padding-right:18px}
  .result{padding:17px 18px}
  .result strong{font-size:1.25rem}
  .section-head{display:block}
  .section-head p{margin-top:8px}
  .fact-list li{grid-template-columns:1fr;gap:4px}
  .footer-inner{align-items:flex-start;flex-direction:column}
  .reference-grid{grid-template-columns:1fr}
}

@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}