/* ═══════════════════════════════════════════════════════════════
   nasalcarehub.com — Authority Design System V1
   Editorial / knowledge-hub theme. Cousin of pvpnosespray FINAL-V3
   but distinct: serif display (Noto Serif Thai), calm clinical palette,
   "breath line" signature, NO money chrome (no Shopee/price/bundle/buy).
   ═══════════════════════════════════════════════════════════════ */
:root{
  --paper:#FBFCFC; --mist:#F1F7F6; --mist2:#E8F4F0; --cream:#FAF6F0;
  --teal:#2BB6A3; --teal-dark:#1E8E7F; --teal-light:#D6F0EB;
  --sky:#4F86B5; --sky-dark:#3A6A93; --sky-light:#E8F1F8;
  --ink:#15303A; --ink-soft:#274551;
  --amber:#D9920C; --amber-bg:#FDF6E8;
  --rose-bg:#FDECEA; --rose-bd:#F0B8B0; --rose:#B6402F;
  --text:#1E2D34; --text-2:#46585F; --muted:#73848B; --invert:#fff;
  --bd:#E3E9E9; --bd-mid:#CBD6D6;
  --sh-sm:0 1px 3px rgba(21,48,58,.06); --sh-md:0 6px 18px rgba(21,48,58,.08);
  --sh-lg:0 16px 40px rgba(21,48,58,.12);
  --r-sm:8px; --r-md:14px; --r-lg:20px; --r-xl:28px;
  --col:1080px; --read:720px; --ease:cubic-bezier(.22,.61,.36,1);
  --serif:"Leelawadee UI",Tahoma,Arial,sans-serif; --sans:"Leelawadee UI",Tahoma,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--sans);color:var(--text);background:var(--paper);
  line-height:1.78;font-size:16px;overflow-wrap:break-word;hyphens:none;overflow-x:hidden}
.wrap{max-width:var(--col);margin:0 auto;padding:0 20px}
.read{max-width:var(--read);margin-left:auto;margin-right:auto}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.img-slot{position:relative;width:100%;background:linear-gradient(135deg,var(--mist2),var(--teal-light));border-radius:var(--r-md);overflow:hidden}
.img-slot.ratio-wide{aspect-ratio:16/9}
.img-slot.ratio-sq{aspect-ratio:1/1}
.img-slot img{width:100%;height:100%;object-fit:cover}
.img-cap{font-size:.8rem;color:var(--muted);margin-top:8px;text-align:center}

/* ── breath-line signature ── */
.breath{height:14px;width:120px;margin:0 0 14px;display:block}
.breath path{fill:none;stroke:var(--teal);stroke-width:2;stroke-linecap:round}
.center .breath{margin-left:auto;margin-right:auto}

/* ── nav (authority — knowledge links, no buy cta) ── */
.nav{position:sticky;top:0;z-index:100;background:rgba(251,252,252,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--bd)}
.nav-inner{max-width:var(--col);margin:0 auto;padding:11px 20px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-weight:700;color:var(--ink);font-size:1.08rem}
.brand-dot{width:32px;height:32px;border-radius:10px;background:linear-gradient(135deg,var(--teal),var(--sky));display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.1rem}
.nav-links{display:none;gap:22px;align-items:center}
.nav-links a{color:var(--text-2);font-weight:500;font-size:.94rem;transition:color .2s}
.nav-links a:hover,.nav-links a.active{color:var(--teal-dark)}
.burger{display:flex;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.burger span{width:24px;height:2.5px;background:var(--ink);border-radius:2px;transition:.3s}
.drawer{position:fixed;inset:0;z-index:200;background:rgba(15,30,40,.5);opacity:0;pointer-events:none;transition:opacity .3s}
.drawer.open{opacity:1;pointer-events:auto}
.drawer-panel{position:absolute;top:0;right:0;width:min(82%,320px);height:100%;background:#fff;padding:24px 22px;transform:translateX(100%);transition:transform .3s var(--ease);display:flex;flex-direction:column;gap:4px;overflow-y:auto}
.drawer.open .drawer-panel{transform:translateX(0)}
.drawer-panel a{padding:13px 8px;border-bottom:1px solid var(--bd);font-weight:600;color:var(--ink)}
.drawer-close{align-self:flex-end;background:none;border:0;font-size:1.7rem;cursor:pointer;color:var(--muted)}

.crumb{background:var(--mist);font-size:.82rem;color:var(--muted);padding:9px 0}
.crumb a:hover{color:var(--teal-dark)}
.crumb b{color:var(--text-2);font-weight:600}

/* ── editorial hero (no buy buttons) ── */
.hero{background:linear-gradient(165deg,var(--sky-light),var(--mist2))}
.hero .wrap{display:grid;gap:26px;padding-top:42px;padding-bottom:46px;align-items:center}
.hero-eyebrow{display:inline-block;background:#fff;color:var(--teal-dark);font-weight:700;font-size:.8rem;padding:6px 14px;border-radius:999px;margin-bottom:16px;border:1px solid var(--teal-light);letter-spacing:.02em}
.hero h1{font-family:var(--serif);font-size:1.9rem;font-weight:700;line-height:1.36;letter-spacing:-.01em;color:var(--ink);margin-bottom:16px}
.hero h1 .accent{color:var(--teal-dark)}
.hero-sub{font-size:1.05rem;color:var(--text-2);margin-bottom:8px}

/* WIFM mini-TOC (replaces buy CTA — "what you'll learn") */
.toc{margin-top:22px;background:#fff;border:1px solid var(--bd);border-radius:var(--r-lg);padding:20px 22px;box-shadow:var(--sh-sm)}
.toc h2{font-family:var(--sans);font-size:.82rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--teal-dark);margin-bottom:12px}
.toc ol{list-style:none;counter-reset:t;display:grid;gap:9px}
.toc li{counter-increment:t;padding-left:34px;position:relative;font-size:.96rem;color:var(--text-2)}
.toc li::before{content:counter(t);position:absolute;left:0;top:1px;width:23px;height:23px;border-radius:7px;background:var(--teal-light);color:var(--teal-dark);font-weight:700;font-size:.8rem;display:flex;align-items:center;justify-content:center}
.toc a{color:inherit}.toc a:hover{color:var(--teal-dark)}

/* ── E-E-A-T byline bar ── */
.byline{background:var(--ink);color:#cfe0e3}
.byline .wrap{display:flex;flex-wrap:wrap;gap:8px 26px;padding:13px 20px;justify-content:center;font-size:.83rem}
.byline span{display:inline-flex;align-items:center;gap:7px}
.byline b{color:#fff;font-weight:600}

/* ── sections ── */
section{padding:50px 0}
.sec-mist{background:var(--mist)}
.sec-mint{background:var(--mist2)}
.eyebrow{color:var(--teal-dark);font-weight:700;font-size:.84rem;letter-spacing:.05em;text-transform:uppercase;margin-bottom:8px}
h2{font-family:var(--serif);font-size:1.55rem;font-weight:700;line-height:1.4;color:var(--ink);margin-bottom:14px;letter-spacing:-.005em}
h3{font-size:1.08rem;font-weight:700;color:var(--ink);margin-bottom:8px}
.lead{font-size:1.05rem;color:var(--text-2);max-width:var(--read);margin-bottom:8px}
p{margin-bottom:15px;color:var(--text-2)}
.prose p,.prose ul,.prose ol{max-width:var(--read)}
.prose ul,.prose ol{margin:0 0 16px 0;padding-left:22px}
.prose li{margin-bottom:7px;color:var(--text-2)}
.center{text-align:center}.center .lead{margin-left:auto;margin-right:auto}
strong,b{color:var(--ink)}

/* ── self-check ("เจอแบบนี้ไหม") ── */
.selfcheck{margin-top:22px;background:#fff;border:1px solid var(--bd);border-left:4px solid var(--sky);border-radius:var(--r-md);padding:22px 24px;box-shadow:var(--sh-sm)}
.selfcheck h3{color:var(--sky-dark)}
.selfcheck ul{list-style:none;display:grid;gap:11px;margin-top:6px}
.selfcheck li{padding-left:30px;position:relative;font-size:.97rem;color:var(--text-2)}
.selfcheck li::before{content:"✔";position:absolute;left:0;top:1px;color:var(--sky);font-weight:700}

/* ── reason / cause cards ── */
.reasons{display:grid;gap:14px;margin-top:22px}
.reason{background:#fff;border:1px solid var(--bd);border-radius:var(--r-md);padding:18px 18px 18px 56px;position:relative;box-shadow:var(--sh-sm)}
.reason .ic{position:absolute;left:16px;top:18px;font-size:1.3rem}
.reason h3{font-size:1.02rem;margin-bottom:4px}
.reason p{font-size:.94rem;margin:0}

/* ── cycle / mechanism flow ── */
.cycle{display:grid;gap:12px;margin-top:22px}
.cstep{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--bd);border-radius:var(--r-md);padding:15px 18px;box-shadow:var(--sh-sm);position:relative}
.cstep .cn{flex:none;width:34px;height:34px;border-radius:50%;background:var(--teal-light);color:var(--teal-dark);font-weight:700;display:flex;align-items:center;justify-content:center}
.cstep p{margin:0;font-size:.96rem;color:var(--ink);font-weight:600}
.callout{margin-top:18px;background:var(--amber-bg);border-left:4px solid var(--amber);border-radius:var(--r-sm);padding:15px 18px;font-size:.95rem;color:var(--ink)}
.callout b{color:var(--ink)}
.note{margin-top:18px;background:var(--sky-light);border-left:4px solid var(--sky);border-radius:var(--r-sm);padding:15px 18px;font-size:.95rem;color:var(--ink)}

/* ── persona cards ── */
.cards{display:grid;gap:16px;margin-top:22px}
.card{background:#fff;border:1px solid var(--bd);border-radius:var(--r-lg);padding:22px;box-shadow:var(--sh-sm);transition:transform .2s var(--ease),box-shadow .2s}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-md)}
.card .ico{width:46px;height:46px;border-radius:13px;background:var(--teal-light);display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:12px}
.card p{font-size:.93rem;margin:0}

/* ── mechanism split ── */
.mech{display:grid;gap:20px;align-items:center;margin-top:10px}
.mech-list{list-style:none;display:grid;gap:13px}
.mech-list li{background:#fff;border:1px solid var(--bd);border-radius:var(--r-md);padding:15px 16px 15px 54px;position:relative;box-shadow:var(--sh-sm);font-size:.95rem;color:var(--text-2)}
.mech-list li b{color:var(--ink)}
.mech-list li .mi{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:30px;height:30px;border-radius:9px;background:var(--teal-light);display:flex;align-items:center;justify-content:center;font-size:1rem}

/* ── steps ── */
.steps{display:grid;gap:13px;margin-top:22px}
.step{display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--bd);border-radius:var(--r-md);padding:17px 18px;box-shadow:var(--sh-sm)}
.step .num{flex:none;width:36px;height:36px;border-radius:50%;background:var(--teal);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center}
.step h3{font-size:1rem}.step p{margin:0;font-size:.94rem}

/* ── balanced approach ladder ── */
.ladder{display:grid;gap:12px;margin-top:22px;counter-reset:l}
.lrow{counter-increment:l;display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--bd);border-radius:var(--r-md);padding:16px 18px;box-shadow:var(--sh-sm)}
.lrow::before{content:counter(l);flex:none;width:30px;height:30px;border-radius:8px;background:var(--sky-light);color:var(--sky-dark);font-weight:700;display:flex;align-items:center;justify-content:center}
.lrow p{margin:0;font-size:.95rem}.lrow b{color:var(--ink)}

/* ── compare table (4 col) ── */
.compare{margin-top:22px;display:grid;gap:10px}
.compare-head{display:none}
.crow{display:grid;grid-template-columns:1fr;gap:6px;background:#fff;border:1px solid var(--bd);border-radius:var(--r-md);padding:16px 18px;box-shadow:var(--sh-sm)}
.crow .cm{font-weight:700;color:var(--ink);font-size:.98rem}
.crow .ch{font-size:.72rem;font-weight:700;color:var(--teal-dark);text-transform:uppercase;letter-spacing:.03em}
.crow .cd{font-size:.9rem;color:var(--text-2)}
.crow-hl{border:2px solid var(--teal);background:var(--mist)}
.crow-hl .cm{color:var(--teal-dark)}

/* ── routine analogy ── */
.analogy{display:grid;gap:12px;margin-top:22px;align-items:stretch}
.an-item{display:flex;gap:14px;align-items:center;background:#fff;border:1px solid var(--bd);border-radius:var(--r-md);padding:18px;box-shadow:var(--sh-sm);font-size:.96rem;color:var(--text-2)}
.an-item b{color:var(--ink)}
.an-item.an-hl{border:2px solid var(--teal);background:var(--mist)}
.an-ic{font-size:1.8rem;flex:none}
.an-eq{text-align:center;font-size:1.5rem;font-weight:800;color:var(--teal);line-height:1}

/* ── anchor quote ── */
.anchor{margin-top:22px;background:linear-gradient(135deg,var(--ink),var(--ink-soft));color:#fff;border-radius:var(--r-lg);padding:26px 24px;position:relative;overflow:hidden}
.anchor::before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:#5fe0cd}
.anchor .lab{color:#9af0e2;font-weight:700;font-size:.8rem;text-transform:uppercase;letter-spacing:.04em;margin-bottom:8px}
.anchor .txt{font-size:1.1rem;font-weight:600;color:#fff;line-height:1.62;margin:0}

/* ── challenge / objection ── */
.obj{display:grid;gap:12px;margin-top:20px}
.qa{background:#fff;border:1px solid var(--bd);border-radius:var(--r-md);overflow:hidden}
.qa summary{padding:17px 48px 17px 20px;font-weight:700;color:var(--ink);cursor:pointer;position:relative;list-style:none;font-size:1rem}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:1.5rem;color:var(--teal);transition:transform .25s}
.qa[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.qa .ans{padding:0 20px 18px;color:var(--text-2);font-size:.95rem}
.qa .ans p{font-size:.95rem}.qa .ans ul{padding-left:20px;margin:8px 0}
.qa .ans .ack{color:var(--teal-dark);font-weight:600}

/* ── safety callout ── */
.safety{margin-top:22px;background:var(--amber-bg);border:1px solid #F0DDA8;border-radius:var(--r-md);padding:20px 22px}
.safety h3{color:#9a6a07;font-size:1.02rem;display:flex;align-items:center;gap:8px}
.safety ul{list-style:none;display:grid;gap:8px;margin-top:10px}
.safety li{padding-left:24px;position:relative;font-size:.93rem;color:var(--text-2)}
.safety li::before{content:"⚠";position:absolute;left:0;color:var(--amber)}

/* ── bridge (editorial aside — read-more, NOT buy) ── */
.bridge-box{margin-top:24px;background:var(--mist);border:1px solid var(--teal-light);border-radius:var(--r-lg);padding:24px}
.bridge-box .lab{color:var(--teal-dark);font-weight:700;font-size:.8rem;text-transform:uppercase;letter-spacing:.04em;margin-bottom:8px}
.bridge-box h3{font-family:var(--serif);font-size:1.2rem;margin-bottom:8px}
.bridge-box p{font-size:.96rem;margin-bottom:14px}
.read-more{display:inline-flex;align-items:center;gap:7px;background:#fff;border:1.5px solid var(--teal);color:var(--teal-dark);font-weight:700;font-size:.96rem;padding:12px 22px;border-radius:999px;transition:background .2s,transform .15s}
.read-more:hover{background:var(--teal-light);transform:translateX(2px)}

/* ── next-action / read-next grid ── */
.next{display:grid;gap:14px;margin-top:22px}
.next a{background:#fff;border:1px solid var(--bd);border-radius:var(--r-md);padding:18px 20px;box-shadow:var(--sh-sm);transition:transform .2s,box-shadow .2s;display:block}
.next a:hover{transform:translateY(-2px);box-shadow:var(--sh-md)}
.next .ico{font-size:1.35rem;margin-bottom:6px}
.next h3{font-size:1.01rem;margin-bottom:4px}
.next p{font-size:.89rem;margin-bottom:8px}
.next .go{color:var(--teal-dark);font-weight:700;font-size:.89rem}
.next .ext::after{content:" ↗";font-size:.85em}

/* ── E-E-A-T review block ── */
.eeat{background:var(--cream);padding:34px 0}
.eeat .wrap{display:grid;gap:14px}
.eeat-box{background:#fff;border:1px solid var(--bd);border-radius:var(--r-md);padding:20px 22px}
.eeat-box h3{font-size:.98rem;margin-bottom:10px}
.eeat-meta{display:flex;flex-wrap:wrap;gap:6px 22px;font-size:.86rem;color:var(--muted);margin-bottom:12px}
.eeat-meta b{color:var(--text-2)}
.eeat-box p{font-size:.86rem;margin:0 0 8px;color:var(--muted);line-height:1.7}
.eeat-box .src{font-size:.82rem;color:var(--muted)}
.eeat-box .src b{color:var(--text-2)}
.eeat-box ul.eeat-safety{list-style:none;display:grid;gap:7px;margin:4px 0 12px}
.eeat-box ul.eeat-safety li{position:relative;padding-left:20px;font-size:.85rem;color:var(--muted);line-height:1.62}
.eeat-box ul.eeat-safety li::before{content:"•";position:absolute;left:5px;color:var(--teal);font-weight:700}
.eeat-box ul.eeat-safety li b{color:var(--text-2)}

/* ── footer (no Shopee) ── */
footer{background:var(--ink);color:#aec3c7;padding:40px 0 44px}
.foot-grid{display:grid;gap:24px}
.foot-brand b{color:#fff;font-family:var(--serif);font-size:1.15rem}
.foot-brand p{color:#8aa4a9;font-size:.88rem;margin-top:8px}
.foot-col h4{color:#fff;font-size:.92rem;margin-bottom:12px}
.foot-col a{display:block;color:#aec3c7;font-size:.9rem;padding:5px 0;transition:color .2s}
.foot-col a:hover{color:#5fe0cd}
.foot-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:26px;padding-top:18px;font-size:.8rem;color:#7e979c;line-height:1.7}

.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}
:focus-visible{outline:3px solid var(--sky);outline-offset:2px;border-radius:4px}

@media(min-width:768px){
  .hero h1{font-size:2.55rem}
  .hero .wrap{grid-template-columns:1.08fr .92fr}
  h2{font-size:1.95rem}
  .cards{grid-template-columns:repeat(2,1fr)}
  .reasons{grid-template-columns:1fr 1fr}
  .mech{grid-template-columns:.95fr 1.05fr}
  .crow{grid-template-columns:1fr 1.4fr 1.4fr;align-items:start;gap:14px}
  .crow .ch{display:none}
  .compare-head{display:grid;grid-template-columns:1fr 1.4fr 1.4fr;gap:14px;padding:0 18px;font-size:.76rem;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.03em}
  .analogy{grid-template-columns:1fr auto 1fr;align-items:center}
  .next{grid-template-columns:repeat(3,1fr)}
  .foot-grid{grid-template-columns:1.5fr 1fr 1fr}
}
@media(min-width:920px){
  .nav-links{display:flex}
  .burger{display:none}
  .cards{grid-template-columns:repeat(4,1fr)}
}