:root{
  --bg:#FFF6F2;--bg2:#FCE6EE;--surface:#FFFFFF;--soft:#FDEEF3;--ink:#3A2630;--muted:#6F5A65;--line:#F1D9E1;
  --btn:#B0455F;--btn-ink:#FFFFFF;--shadow:0 10px 30px rgba(176,69,95,.10);
  --menstrual:#EE8FAB;--follicular:#B197E8;--ovulation:#7FC79D;--luteal:#F3B96E;
  --serif:"Cormorant Garamond",Georgia,"Times New Roman",serif;
  --sans:"DM Sans",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  box-sizing:border-box;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px);color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){--bg:#1D1419;--bg2:#2A1A23;--surface:#2A1E25;--soft:#34242D;--ink:#F7EBF0;--muted:#BCA6B0;--line:#443039;--btn:#EE9BB4;--btn-ink:#2A1419;--shadow:0 10px 30px rgba(0,0,0,.35);color-scheme:dark}
}
:root[data-theme="dark"]{--bg:#1D1419;--bg2:#2A1A23;--surface:#2A1E25;--soft:#34242D;--ink:#F7EBF0;--muted:#BCA6B0;--line:#443039;--btn:#EE9BB4;--btn-ink:#2A1419;--shadow:0 10px 30px rgba(0,0,0,.35);color-scheme:dark}
*,*::before,*::after{box-sizing:border-box}
html{scroll-padding-top:calc(env(safe-area-inset-top,0px) + 120px);-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--sans);font-size:1rem;line-height:1.6;color:var(--ink);background:var(--bg);background-image:linear-gradient(180deg,var(--bg2),var(--bg) 460px);background-repeat:no-repeat}
h1,h2,h3,h4{font-family:var(--serif);font-weight:500;line-height:1.12;margin:0;letter-spacing:-.01em}
p{margin:0}
a{color:var(--btn)}
button,input,select,textarea{font:inherit;color:inherit}
img,svg{max-width:100%}
:focus-visible{outline:3px solid var(--btn);outline-offset:3px;border-radius:8px}
.container{max-width:1160px;margin:0 auto;padding:0 1.25rem}
.skip{position:absolute;left:-999px;top:0;background:var(--btn);color:var(--btn-ink);padding:.6rem 1rem;z-index:100}
.skip:focus{left:0}

/* header */
.hdr{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:color-mix(in srgb,var(--bg) 90%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.hdr-in{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:.5rem 1.5rem;padding:.75rem 1.25rem;max-width:1160px;margin:0 auto}
.logo{font-family:var(--serif);font-size:1.65rem;font-weight:600;color:var(--btn);text-decoration:none;white-space:nowrap}
.nav{display:flex;gap:1.3rem;justify-content:center;overflow-x:auto;scrollbar-width:none}
.nav::-webkit-scrollbar{display:none}
.nav a{text-decoration:none;font-size:.92rem;padding:.4rem 0;white-space:nowrap;color:var(--muted);border-bottom:2px solid transparent}
.nav a:hover{color:var(--ink)}
.nav a[aria-current="page"]{color:var(--ink);border-bottom-color:var(--btn)}
.hdr-r{display:flex;gap:.6rem;align-items:center}
.avatar{width:38px;height:38px;border-radius:50%;background:color-mix(in srgb,var(--menstrual) 40%,var(--surface));display:grid;place-items:center;font-weight:700;text-decoration:none;color:var(--ink)}
@media (max-width:860px){.hdr-in{grid-template-columns:1fr auto}.nav{grid-column:1/-1;grid-row:2;justify-content:flex-start}}

/* buttons / chips / cards */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:44px;padding:.65rem 1.4rem;border-radius:999px;border:1.5px solid var(--btn);background:var(--btn);color:var(--btn-ink);font-weight:500;text-decoration:none;cursor:pointer}
.btn:hover{filter:brightness(1.06)}
.btn.ghost{background:transparent;color:var(--ink)}
.btn.sm{min-height:38px;padding:.4rem 1.1rem;font-size:.9rem}
.btn.block{width:100%}
.link{background:none;border:0;padding:0;text-decoration:underline;cursor:pointer;color:var(--btn)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);padding:1.25rem}
.chips{display:flex;flex-wrap:wrap;gap:.5rem}
.chip{border:1px solid var(--line);background:var(--surface);border-radius:999px;padding:.4rem .95rem;min-height:38px;cursor:pointer;font-size:.92rem}
.chip[aria-pressed="true"]{background:color-mix(in srgb,var(--btn) 16%,var(--surface));border-color:var(--btn);font-weight:500}
.tag{display:inline-block;border-radius:999px;padding:.15rem .7rem;font-size:.78rem;background:color-mix(in srgb,var(--menstrual) 25%,var(--surface))}
.eyebrow{color:var(--btn);font-size:.8rem;letter-spacing:.06em;text-transform:uppercase;font-weight:700}
.muted{color:var(--muted)}
.grid3{display:grid;gap:1rem}
@media (min-width:820px){.grid3{grid-template-columns:repeat(3,1fr)}}
.grid4{display:grid;gap:1rem;grid-template-columns:repeat(2,1fr)}
@media (min-width:820px){.grid4{grid-template-columns:repeat(4,1fr)}}
.page{padding:2rem 0 3rem}
.page h1{font-size:clamp(2.2rem,6vw,3.3rem)}
h2.sec{font-size:clamp(1.7rem,4vw,2.3rem);margin:2.5rem 0 1rem}

/* phase colours */
.ph-menstrual{--pc:var(--menstrual)}.ph-follicular{--pc:var(--follicular)}.ph-ovulation{--pc:var(--ovulation)}.ph-luteal{--pc:var(--luteal)}
.dot{display:inline-block;width:.8rem;height:.8rem;border-radius:50%;background:var(--pc);margin-right:.5rem;vertical-align:-1px}

/* breadcrumbs, hero, banners */
.crumbs{font-size:.85rem;color:var(--muted);margin-bottom:1rem}
.crumbs a{color:var(--muted)}
.hero{display:grid;gap:2rem;padding:3rem 0 2rem;align-items:center}
@media (min-width:880px){.hero{grid-template-columns:1.05fr 1fr;padding:4rem 0 3rem}}
.hero h1{font-size:clamp(2.8rem,8vw,5rem);max-width:11ch}
.hero h1 em{color:var(--btn);font-style:italic}
.hero p.lede{font-size:1.1rem;color:var(--muted);max-width:44ch;margin:1.25rem 0 1.75rem}
.art{position:relative;min-height:320px;display:grid;place-items:center}
.blob{width:min(86%,400px);aspect-ratio:1;border-radius:58% 42% 52% 48% / 48% 56% 44% 52%;background:radial-gradient(circle at 30% 25%,color-mix(in srgb,var(--menstrual) 55%,var(--surface)),color-mix(in srgb,var(--follicular) 45%,var(--surface)) 75%);display:grid;place-items:center}
.art .float{position:absolute;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:16px;padding:.6rem .9rem;font-size:.85rem}
.strip{display:grid;gap:1rem;grid-template-columns:repeat(2,1fr);padding:1.25rem;margin-top:1rem}
@media (min-width:820px){.strip{grid-template-columns:repeat(4,1fr)}}
.strip div{display:flex;gap:.7rem;align-items:center;font-size:.9rem}
.strip .ic{width:40px;height:40px;border-radius:50%;background:var(--soft);display:grid;place-items:center;flex:none}
.band{padding:3rem 0 0}
.band h2{font-size:clamp(1.9rem,5vw,2.8rem);margin-bottom:1.5rem}
.band.center{text-align:center}
.pbub{display:block;text-align:center;padding:1.4rem 1rem;border-radius:32px;background:color-mix(in srgb,var(--pc) 24%,var(--surface));text-decoration:none;color:var(--ink)}
.pbub h3{font-size:1.5rem;margin-top:.4rem}
.pbub p{font-size:.88rem;color:var(--muted);margin-top:.25rem}
.pbub .d{font-size:.8rem;font-weight:700;margin-top:.5rem}
.steps{list-style:none;margin:0;padding:0;display:grid;gap:1rem;counter-reset:s}
@media (min-width:820px){.steps{grid-template-columns:repeat(3,1fr)}}
.steps li{counter-increment:s;background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:1.4rem;text-align:left}
.steps li::before{content:"Step " counter(s);font-size:.8rem;color:var(--btn);font-weight:700;display:block;margin-bottom:.4rem}
.steps h3{font-size:1.5rem;margin-bottom:.4rem}
.cta{margin:3rem 0;padding:2.5rem 1.5rem;border-radius:32px;text-align:center;background:linear-gradient(135deg,color-mix(in srgb,var(--menstrual) 35%,var(--surface)),color-mix(in srgb,var(--follicular) 35%,var(--surface)))}
.cta h2{font-size:clamp(1.9rem,5vw,2.8rem);margin-bottom:1rem}
.banner{display:flex;justify-content:space-between;align-items:center;gap:1rem;border-radius:28px;padding:1.75rem;background:linear-gradient(120deg,color-mix(in srgb,var(--pc,var(--follicular)) 30%,var(--surface)),var(--surface));border:1px solid var(--line);overflow:hidden}
.banner .em{font-size:5rem;line-height:1}
@media (max-width:560px){.banner .em{font-size:3.2rem}}
.banner p{color:var(--muted);max-width:52ch;margin-top:.6rem}
.now{margin:1rem 0 0;padding:.9rem 1.1rem;border-radius:16px;background:color-mix(in srgb,var(--follicular) 18%,var(--surface));border:1px solid var(--line)}

/* article / prose */
.prose{max-width:760px}
.prose h2{font-size:clamp(1.7rem,4vw,2.2rem);margin:2.2rem 0 .75rem}
.prose h3{font-size:1.4rem;margin:1.5rem 0 .4rem}
.prose p{margin:0 0 1rem;font-size:1.05rem;line-height:1.7}
.prose ul,.prose ol{margin:0 0 1.2rem;padding-left:1.3rem;font-size:1.05rem;line-height:1.7}
.prose li{margin-bottom:.35rem}
.prose .lead{font-size:1.2rem;color:var(--muted)}
.meta{font-size:.85rem;color:var(--muted);margin:.6rem 0 1.5rem}
.note{border-left:5px solid var(--btn);background:var(--soft);border-radius:0 14px 14px 0;padding:1rem 1.1rem;margin:1.5rem 0;font-size:.95rem}
.layout{display:grid;gap:2rem}
@media (min-width:980px){.layout{grid-template-columns:minmax(0,1fr) 300px;align-items:start}}
.side{display:grid;gap:1rem;position:sticky;top:calc(env(safe-area-inset-top,0px) + 100px)}
.side h3{font-size:1.3rem;margin-bottom:.5rem}
.side ul{list-style:none;margin:0;padding:0;display:grid;gap:.45rem;font-size:.95rem}
table.tbl{width:100%;border-collapse:collapse;font-size:.92rem;margin:0 0 1.2rem}
.tblwrap{overflow-x:auto;border:1px solid var(--line);border-radius:16px;background:var(--surface);margin-bottom:1.2rem}
.tblwrap table{margin:0;min-width:560px}
.tbl th,.tbl td{padding:.65rem .8rem;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.tbl th{font-family:var(--sans);font-weight:700;background:var(--soft)}
.tbl tr:last-child td{border-bottom:0}
details.faq{border:1px solid var(--line);border-radius:16px;background:var(--surface);padding:.9rem 1.1rem;margin-bottom:.7rem}
details.faq summary{cursor:pointer;font-weight:700}
details.faq p{margin-top:.6rem;margin-bottom:0}
.acard{display:block;text-decoration:none;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);overflow:hidden}
.acard .img{height:110px;display:grid;place-items:center;font-size:3.2rem;background:color-mix(in srgb,var(--pc,var(--follicular)) 30%,var(--surface))}
.acard .bd{padding:1rem 1.1rem 1.2rem}
.acard h3{font-size:1.4rem}
.acard p{font-size:.9rem;color:var(--muted);margin-top:.35rem}
.pager{display:flex;justify-content:space-between;gap:1rem;margin:2.5rem 0 0;flex-wrap:wrap}
.ad-slot{margin:1.75rem 0;min-height:120px;border:1px dashed var(--line);border-radius:14px;display:grid;place-items:center;text-align:center;color:var(--muted);font-size:.78rem;padding:.5rem}

/* forms */
.auth{display:grid;gap:2rem;padding:2.5rem 0 3rem;align-items:center}
@media (min-width:880px){.auth{grid-template-columns:1fr 1fr}}
.auth .sidea{text-align:center}
.auth .sidea h2{font-size:2.2rem;margin-top:1rem}
.form{display:grid;gap:1rem}
.field{display:grid;gap:.35rem}
.field label{font-size:.88rem;font-weight:500}
.input{width:100%;min-height:46px;border:1px solid var(--line);background:var(--surface);border-radius:14px;padding:.6rem .85rem}
.input:focus{border-color:var(--btn)}
.pw{display:flex;gap:.5rem}
.err{color:#B3261E;font-size:.9rem;min-height:1.2em}
:root[data-theme="dark"] .err{color:#FFB4AB}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .err{color:#FFB4AB}}
.check{display:flex;gap:.6rem;align-items:flex-start;font-size:.9rem}
.check input{width:20px;height:20px;accent-color:var(--btn);margin-top:2px;flex:none}
.row3{display:grid;gap:1rem}
@media (min-width:640px){.row3{grid-template-columns:repeat(3,1fr)}}

/* app widgets */
.dash-hero{display:grid;gap:1.5rem;align-items:center}
@media (min-width:720px){.dash-hero{grid-template-columns:260px 1fr}}
.ringbox{position:relative;width:240px;height:240px;margin:0 auto}
.ringbox svg{width:100%;height:100%}
.ringc{position:absolute;inset:0;display:grid;place-content:center;text-align:center}
.ringc b{font-family:var(--serif);font-size:1.9rem;font-weight:500;line-height:1.1}
.ringc span{font-family:var(--serif);font-size:1.4rem}
.dash-hero h1{font-size:clamp(2rem,5vw,2.8rem)}
.dash-hero h2{font-size:1.6rem;margin:.75rem 0 .25rem}
.list{list-style:none;margin:.75rem 0 0;padding:0;display:grid;gap:.7rem}
.list li{display:flex;gap:.6rem;align-items:flex-start;font-size:.95rem}
.tick{flex:none;width:20px;height:20px;border-radius:50%;background:color-mix(in srgb,var(--btn) 18%,var(--surface));color:var(--btn);display:grid;place-items:center;font-size:.7rem;margin-top:2px}
.key{display:flex;gap:.8rem;align-items:center;padding:.5rem 0}
.key .ic{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;font-size:1.2rem;background:var(--soft);flex:none}
.tile{display:flex;justify-content:space-between;align-items:center;gap:1rem;text-decoration:none;color:var(--ink);border-radius:22px;padding:1.4rem;min-height:130px;background:color-mix(in srgb,var(--pc) 28%,var(--surface));border:1px solid var(--line)}
.tile h3{font-size:1.6rem}
.tile .em{font-size:3rem}
.tile.t1{--pc:var(--follicular)}.tile.t2{--pc:var(--ovulation)}.tile.t3{--pc:var(--menstrual)}
.cal-wrap{display:grid;gap:1.25rem}
@media (min-width:980px){.cal-wrap{grid-template-columns:1fr 320px}}
.cal-top{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:1rem;flex-wrap:wrap}
.cal-nav{display:flex;align-items:center;gap:.75rem}
.cal-nav b{font-family:var(--serif);font-size:1.5rem;font-weight:500;min-width:9ch;text-align:center}
.icon-btn{width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:var(--surface);cursor:pointer;font-size:1.1rem}
.grid7{display:grid;grid-template-columns:repeat(7,1fr);gap:4px}
.dow{text-align:center;font-size:.78rem;color:var(--muted);padding:.3rem 0}
.cell{min-height:56px;border-radius:12px;border:2px solid transparent;background:color-mix(in srgb,var(--pc) 24%,var(--surface));cursor:pointer;padding:.3rem;text-align:left;display:flex;flex-direction:column;justify-content:space-between;font-size:.88rem}
.cell.empty{background:transparent;cursor:default}
.cell small{font-size:.8rem;line-height:1}
.cell.today{border-color:var(--ink)}
.cell.sel{box-shadow:0 0 0 3px var(--btn)}
@media (min-width:600px){.cell{min-height:72px}}
.legend{display:grid;gap:.6rem;margin-top:.75rem}
.side-card{margin-bottom:1rem}
.side-card h3{font-size:1.4rem;margin-bottom:.4rem}
.hist{list-style:none;padding:0;margin:.5rem 0 0;display:grid;gap:.4rem;font-size:.9rem}
.set-grid{display:grid;gap:1.25rem;max-width:760px}
.radios{display:flex;gap:1.25rem}
.radios label,.checks label{display:flex;gap:.5rem;align-items:center}
.checks{display:grid;gap:.5rem}
.radios input,.checks input{width:20px;height:20px;accent-color:var(--btn)}
.toast{position:fixed;left:50%;bottom:calc(1.25rem + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--ink);color:var(--bg);padding:.7rem 1.2rem;border-radius:999px;font-size:.92rem;z-index:50;opacity:0;pointer-events:none;transition:opacity .2s}
.toast.on{opacity:1}

/* footer */
.ftr{border-top:1px solid var(--line);margin-top:3rem;padding:2.5rem 0 2.5rem;color:var(--muted);font-size:.92rem}
.ftr-grid{display:grid;gap:1.5rem}
@media (min-width:760px){.ftr-grid{grid-template-columns:1.6fr 1fr 1fr 1fr}}
.ftr h4{font-family:var(--sans);font-size:.85rem;font-weight:700;color:var(--ink);margin-bottom:.6rem}
.ftr ul{list-style:none;margin:0;padding:0;display:grid;gap:.4rem}
.ftr a{color:var(--muted)}
.ftr .small{margin-top:1.5rem;font-size:.82rem;max-width:80ch}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}