/* =========================================================================
   LUHAS 乐活 — Nature Wellness / Aromatherapy
   Warm-natural calm-spa system · Cormorant Garamond + Mulish
   Palette: ivory / bamboo gold / amber / espresso / sage — from the real
   product packaging. Retreat to nature.
   ========================================================================= */

:root{
  --ivory:#F5EEE1;
  --ivory-2:#EFE6D5;
  --paper:#FBF8F2;
  --espresso:#3A2D23;
  --espresso-deep:#2A2019;
  --mocha:#6E5C4B;
  --ink-soft:#6E5C4B;        /* AA: was #7A6B5B (4.46:1) → mocha 5.5:1 on ivory */
  --bamboo:#C49A5C;
  --bamboo-deep:#7A5A1C;     /* AA: was #9A7434 (3.4–4.0:1) → 5.0:1 on ivory for small text/labels/CTA */
  --amber:#8A5223;           /* AA: was #A9682E (3.87:1) → 5.0:1 for prices on ivory */
  --sage:#7C8A6B;
  --sage-deep:#5E6B4F;
  --line:#E2D7C2;
  --line-soft:#EAE1D0;

  --header-h:78px;
  --maxw:1280px;
  --gutter:clamp(20px,5vw,72px);
  --r-sm:10px;--r-md:18px;--r-lg:28px;--r-xl:40px;

  --shadow-sm:0 2px 12px rgba(58,45,35,.06);
  --shadow-md:0 24px 60px -32px rgba(58,45,35,.34);
  --shadow-lg:0 44px 100px -54px rgba(42,32,25,.5);

  --display:"Cormorant Garamond",Georgia,serif;
  --body:"Mulish",system-ui,-apple-system,sans-serif;
  --ease:cubic-bezier(.4,0,.15,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--body);background:var(--ivory);color:var(--espresso);
  font-size:clamp(15.5px,1vw,16.5px);line-height:1.75;font-weight:400;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
::selection{background:var(--bamboo);color:#fff}

.display{font-family:var(--display);font-weight:500;line-height:1.04}
.eyebrow{
  font-family:var(--body);font-weight:700;font-size:.74rem;letter-spacing:.34em;
  text-transform:uppercase;color:var(--bamboo-deep);display:inline-flex;align-items:center;gap:.7em;
}
.eyebrow::before{content:"";width:26px;height:1.5px;background:currentColor;display:inline-block}
.eyebrow.is-light{color:var(--bamboo)}
.lead{font-size:clamp(1.05rem,1.5vw,1.24rem);color:var(--mocha);line-height:1.8}

.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(72px,9vw,136px)}

/* ---------- buttons ---------- */
.btn{
  --bg:var(--espresso);--bg-h:var(--espresso-deep);--fg:#fff;
  display:inline-flex;align-items:center;gap:.6em;background:var(--bg);color:var(--fg);
  padding:.92em 1.7em;border-radius:999px;font-weight:600;font-size:.95rem;letter-spacing:.02em;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease);
}
.btn:hover{transform:translateY(-2px);background:var(--bg-h);box-shadow:0 16px 30px -16px rgba(42,32,25,.6)}
.btn .arw{transition:transform .3s var(--ease)}
.btn:hover .arw{transform:translateX(4px)}
.btn--bamboo{--bg:var(--bamboo-deep);--bg-h:var(--amber);--fg:#fff}
.btn--ghost{--bg:transparent;--bg-h:var(--espresso);--fg:var(--espresso);border:1.5px solid var(--mocha)}
.btn--ghost:hover{--fg:#fff;border-color:var(--espresso);box-shadow:none}
.btn--lg{padding:1.05em 2.05em;font-size:1rem}

/* focus-visible (a11y) */
a:focus-visible,button:focus-visible,.btn:focus-visible,summary:focus-visible,
input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--bamboo-deep);outline-offset:3px;border-radius:6px;
}
.why a:focus-visible,.why button:focus-visible,.cta a:focus-visible,
.site-footer a:focus-visible,.hero-dark a:focus-visible{outline-color:var(--bamboo)}

/* =========================================================================
   HEADER (sticky · counts toward first screen — R6)
   ========================================================================= */
.site-header{
  position:sticky;top:0;z-index:60;height:var(--header-h);display:flex;align-items:center;
  background:color-mix(in srgb,var(--ivory) 84%,transparent);backdrop-filter:saturate(1.3) blur(14px);
  border-bottom:1px solid transparent;transition:border-color .3s var(--ease),background .3s var(--ease);
}
.site-header.is-stuck{border-bottom-color:var(--line);background:color-mix(in srgb,var(--ivory) 94%,transparent)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%}

.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand img{height:44px;width:auto;display:block}
.footer__brand .brand img{height:50px}
.brand .mark{width:46px;height:34px;flex-shrink:0}
.brand .mark svg{width:100%;height:100%;display:block}
.brand .bz{display:flex;flex-direction:column;line-height:1}
.brand .wm{font-family:var(--display);font-weight:600;font-size:1.62rem;letter-spacing:.18em;color:var(--espresso);padding-left:.2em}
.brand .wm sup{font-size:.36em;vertical-align:.85em;letter-spacing:0;color:var(--bamboo-deep)}
.brand .tl{font-size:.5rem;letter-spacing:.3em;font-weight:700;color:var(--bamboo-deep);margin-top:1px;padding-left:.22em}

.nav{display:flex;align-items:center;gap:clamp(16px,2.2vw,34px)}
.nav a{font-weight:600;font-size:.94rem;color:var(--espresso);position:relative;padding-block:6px;letter-spacing:.01em}
.nav a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--bamboo);transition:width .3s var(--ease)}
.nav a:hover::after{width:100%}
.header-cta{display:flex;align-items:center;gap:14px;flex-shrink:0}
.nav-toggle{display:none}

/* =========================================================================
   HERO (header + hero = one screen — R6) — product-forward, warm
   ========================================================================= */
.hero{position:relative;min-height:calc(100svh - var(--header-h));display:flex;align-items:center;overflow:hidden;
  background:radial-gradient(120% 90% at 78% 20%,#FBF6EC 0%,var(--ivory) 46%,var(--ivory-2) 100%)}
.hero__bloom{position:absolute;inset:0;z-index:0;pointer-events:none;opacity:.5}
.hero .wrap{position:relative;z-index:1;width:100%}
.hero__grid{display:grid;grid-template-columns:1.04fr .96fr;gap:clamp(28px,5vw,64px);align-items:center}
.hero__copy{max-width:36ch}
.hero h1{font-family:var(--display);font-weight:500;font-size:clamp(2.9rem,6.6vw,5.6rem);line-height:1.0;letter-spacing:0;color:var(--espresso)}
.hero h1 em{font-style:italic;color:var(--bamboo-deep)}
.hero .lead{margin-top:1.3rem;max-width:42ch}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:2rem}
.hero__note{margin-top:1.7rem;display:inline-flex;align-items:center;gap:.6em;font-size:.86rem;color:var(--ink-soft)}
.hero__note i{width:7px;height:7px;border-radius:50%;background:var(--sage);display:inline-block}

.hero__stage{position:relative;display:flex;justify-content:center;align-items:center}
.hero__tile{position:relative;width:min(100%,430px);aspect-ratio:4/5;border-radius:var(--r-xl);overflow:hidden;
  background:linear-gradient(160deg,#FCFAF5,#F1E7D5);box-shadow:var(--shadow-lg)}
.hero__tile img{width:100%;height:100%;object-fit:contain;padding:8% 12%}
.hero__chip{position:absolute;left:-14px;bottom:34px;background:var(--paper);border:1px solid var(--line);
  border-radius:14px;padding:12px 16px;box-shadow:var(--shadow-md);max-width:200px}
.hero__chip .nm{font-family:var(--display);font-weight:600;font-size:1.15rem;color:var(--espresso);line-height:1.1}
.hero__chip .ds{font-size:.78rem;color:var(--ink-soft);margin-top:3px}
.hero__chip .pr{font-weight:800;color:var(--amber);font-size:.92rem;margin-top:6px}
.hero__seal{position:absolute;right:-8px;top:20px;width:92px;height:92px}
.scroll-cue{position:absolute;left:var(--gutter);bottom:22px;z-index:2;display:inline-flex;align-items:center;gap:10px;color:var(--ink-soft);font-size:.72rem;letter-spacing:.24em;text-transform:uppercase}
.scroll-cue i{width:30px;height:1px;background:var(--bamboo);position:relative;overflow:hidden;display:inline-block}
.scroll-cue i::after{content:"";position:absolute;inset:0;background:var(--espresso);transform:translateX(-100%);animation:cue 2.4s var(--ease) infinite}
@keyframes cue{0%{transform:translateX(-100%)}55%,100%{transform:translateX(100%)}}

/* =========================================================================
   (A) STATEMENT — editorial brand line
   ========================================================================= */
.statement{background:var(--ivory)}
.statement__grid{display:grid;grid-template-columns:1.12fr .88fr;gap:clamp(32px,5vw,76px);align-items:start}
.statement h2{font-family:var(--display);font-weight:500;font-size:clamp(1.9rem,3.8vw,3.1rem);line-height:1.18;letter-spacing:0;color:var(--espresso)}
.statement h2 em{font-style:italic;color:var(--bamboo-deep)}
.statement__aside{border-left:2px solid var(--bamboo);padding-left:clamp(20px,2vw,30px)}
.statement__aside .lead{color:var(--espresso)}
.statement__aside p+p{margin-top:1rem;color:var(--mocha)}
.statement__sig{margin-top:1.5rem;font-family:var(--display);font-style:italic;font-size:1.25rem;color:var(--bamboo-deep)}

/* =========================================================================
   (B) COLLECTION — 4 products, even grid
   ========================================================================= */
.collection{background:var(--paper)}
.collection__head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:clamp(28px,4vw,52px)}
.collection__head h2{font-family:var(--display);font-weight:500;font-size:clamp(2.1rem,4.2vw,3.3rem);line-height:1.04;color:var(--espresso)}
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.prod{position:relative;background:var(--ivory);border:1px solid var(--line-soft);border-radius:var(--r-md);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .4s var(--ease)}
.prod:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:transparent}
.prod__img{position:relative;aspect-ratio:1;background:linear-gradient(160deg,#FDFBF6,#F0E6D4);overflow:hidden}
.prod__img img{width:100%;height:100%;object-fit:contain;padding:12%;transition:transform .6s var(--ease)}
.prod:hover .prod__img img{transform:scale(1.05)}
.prod__b{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.prod__b .cat{font-size:.68rem;letter-spacing:.2em;text-transform:uppercase;color:var(--bamboo-deep);font-weight:700}
.prod__b h3{font-family:var(--display);font-weight:600;font-size:1.42rem;line-height:1.06;margin:.4rem 0 .35rem;color:var(--espresso)}
.prod__b p{font-size:.86rem;color:var(--ink-soft);line-height:1.5;flex:1}
.prod__b .pr{margin-top:.9rem;font-weight:800;color:var(--amber);font-size:1.02rem}

/* =========================================================================
   (B2) FEATURE SHOWCASE — centred: head + product + 3 benefits row
   ========================================================================= */
.feature-show{background:var(--ivory)}
.fs-head{max-width:640px;margin-inline:auto;text-align:center}
.fs-head .eyebrow{justify-content:center}
.fs-head h2{font-family:var(--display);font-weight:500;font-size:clamp(2rem,4vw,3rem);line-height:1.08;margin-top:1rem;color:var(--espresso)}
.fs-head h2 em{font-style:italic;color:var(--bamboo-deep)}
.fs-head .lead{margin-top:1rem}
.fs-img{width:min(100%,400px);aspect-ratio:5/4;margin:clamp(28px,4vw,48px) auto;border-radius:var(--r-lg);overflow:hidden;background:linear-gradient(160deg,#FCFAF5,#EFE3CE);box-shadow:var(--shadow-md)}
.fs-img img{width:100%;height:100%;object-fit:contain;padding:7%}
.fs-benefits{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(20px,3.5vw,48px)}
.fb{text-align:center}
.fb .ic{width:48px;height:48px;border-radius:14px;margin:0 auto 14px;background:color-mix(in srgb,var(--bamboo) 14%,#fff);display:grid;place-items:center;color:var(--bamboo-deep)}
.fb h3{font-family:var(--display);font-weight:600;font-size:1.42rem;color:var(--espresso)}
.fb p{color:var(--mocha);font-size:.92rem;margin-top:.4rem;max-width:32ch;margin-inline:auto}

/* =========================================================================
   (C) RITUAL — daily retreat steps
   ========================================================================= */
.ritual{background:var(--ivory)}
.ritual__head{max-width:560px;margin-bottom:clamp(30px,4vw,54px)}
.ritual__head h2{font-family:var(--display);font-weight:500;font-size:clamp(2rem,4vw,3rem);line-height:1.08;margin-top:1rem;color:var(--espresso)}
.ritual__head p{color:var(--mocha);margin-top:1rem}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(20px,3vw,40px)}
.rstep{position:relative;padding-top:30px}
.rstep::before{content:"";position:absolute;top:9px;left:0;right:-24px;height:1px;background:linear-gradient(to right,var(--bamboo) 40%,var(--line) 40%)}
.rstep:last-child::before{right:0}
.rstep .n{position:absolute;top:0;left:0;width:18px;height:18px;border-radius:50%;background:var(--bamboo);box-shadow:0 0 0 5px color-mix(in srgb,var(--bamboo) 22%,transparent)}
.rstep .k{font-family:var(--display);font-style:italic;font-size:1.1rem;color:var(--bamboo-deep)}
.rstep h3{font-family:var(--display);font-weight:600;font-size:1.5rem;margin:.4rem 0 .5rem;color:var(--espresso)}
.rstep p{color:var(--mocha);font-size:.94rem}

/* =========================================================================
   (D) WHY / VALUES — warm dark band
   ========================================================================= */
.why{background:var(--espresso);color:#fff;position:relative;overflow:hidden}
.why__grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(32px,5vw,72px);align-items:center}
.why__media{position:relative;border-radius:var(--r-lg);overflow:hidden;background:linear-gradient(160deg,#FCFAF5,#EFE3CE);aspect-ratio:4/5;box-shadow:var(--shadow-lg)}
.why__media img{width:100%;height:100%;object-fit:contain;padding:10%}
.why__media .tag{position:absolute;left:18px;bottom:18px;background:rgba(42,32,25,.78);color:#fff;backdrop-filter:blur(6px);padding:.55em 1.1em;border-radius:999px;font-size:.82rem;font-weight:600;letter-spacing:.04em}
.why h2{font-family:var(--display);font-weight:500;color:#fff;font-size:clamp(2rem,3.8vw,3rem);line-height:1.1}
.why h2 em{font-style:italic;color:var(--bamboo)}
.why__list{margin-top:1.8rem;display:grid;gap:0}
.why-row{display:grid;grid-template-columns:auto 1fr;gap:20px;padding:1.15rem 0;border-top:1px solid rgba(255,255,255,.16);align-items:start}
.why-row:last-child{border-bottom:1px solid rgba(255,255,255,.16)}
.why-row .ic{width:42px;height:42px;border-radius:12px;background:rgba(196,154,92,.18);display:grid;place-items:center;color:var(--bamboo);flex-shrink:0}
.why-row h3{font-family:var(--display);font-weight:600;font-size:1.3rem}
.why-row p{color:rgba(255,255,255,.74);font-size:.93rem;margin-top:.3rem}

/* =========================================================================
   (E) ENGRAVING — feature callout band
   ========================================================================= */
.engrave{background:var(--ivory-2);position:relative;overflow:hidden}
.engrave__grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,4.5vw,64px);align-items:center}
.engrave__media{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-md);aspect-ratio:1;background:#fff}
.engrave__media img{width:100%;height:100%;object-fit:contain}
.engrave h2{font-family:var(--display);font-weight:500;font-size:clamp(1.9rem,3.6vw,2.9rem);line-height:1.1;color:var(--espresso)}
.engrave h2 em{font-style:italic;color:var(--bamboo-deep)}
.engrave .pill{display:inline-flex;align-items:center;gap:.5em;background:var(--bamboo-deep);color:#fff;font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;font-weight:700;padding:.45em 1em;border-radius:999px;margin-bottom:1.1rem}
.engrave p{color:var(--mocha);margin-top:1rem;max-width:44ch}
.engrave .btn{margin-top:1.7rem}

/* =========================================================================
   (F) CTA / WHERE TO BUY
   ========================================================================= */
.cta{background:var(--ivory)}
.cta__panel{position:relative;background:linear-gradient(135deg,var(--espresso),#4A3A2C);color:#fff;border-radius:var(--r-xl);
  padding:clamp(40px,6vw,84px);overflow:hidden;display:grid;grid-template-columns:1.35fr .65fr;gap:32px;align-items:center}
.cta__panel h2{font-family:var(--display);font-weight:500;font-size:clamp(2.1rem,4.4vw,3.4rem);line-height:1.02;color:#fff}
.cta__panel h2 em{font-style:italic;color:var(--bamboo)}
.cta__panel p{color:rgba(255,255,255,.82);margin-top:1rem;max-width:42ch}
.cta__actions{display:flex;flex-direction:column;gap:12px;align-items:flex-start}
.cta__bloom{position:absolute;right:-40px;top:-40px;width:280px;height:280px;opacity:.16;pointer-events:none}

/* =========================================================================
   FOOTER (R2 signature)
   ========================================================================= */
.site-footer{background:var(--espresso-deep);color:rgba(255,255,255,.66);padding-top:clamp(58px,6.5vw,92px)}
.footer__top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:clamp(28px,4vw,56px);padding-bottom:clamp(40px,5vw,62px);border-bottom:1px solid rgba(255,255,255,.1)}
.footer__brand .brand .wm{color:#fff}
.footer__brand p{margin-top:16px;max-width:34ch;font-size:.92rem;line-height:1.7}
.footer__brand .slogan{font-family:var(--display);font-style:italic;color:var(--bamboo);font-size:1.2rem;margin-top:14px}
.site-footer h3{color:#fff;font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;font-weight:700;margin-bottom:16px}
.footer__links li+li{margin-top:10px}
.footer__links a{font-size:.93rem;transition:color .25s var(--ease)}
.footer__links a:hover{color:var(--bamboo)}
.footer__contact p{font-size:.92rem;line-height:1.6;margin-bottom:10px}
.footer__contact a{color:#fff}
.footer__bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-block:24px;font-size:.83rem}
.footer__bottom .sign a{color:#fff;font-weight:700;border-bottom:1px solid rgba(255,255,255,.4)}
.footer__bottom .sign a:hover{border-color:#fff}

/* =========================================================================
   MOTION (reveal · reduced-motion + no-JS safe — D7)
   ========================================================================= */
.js [data-reveal]{opacity:0;transform:translateY(24px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.js [data-reveal].in{opacity:1;transform:none}
.js [data-reveal][data-d="1"]{transition-delay:.08s}
.js [data-reveal][data-d="2"]{transition-delay:.16s}
.js [data-reveal][data-d="3"]{transition-delay:.24s}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;scroll-behavior:auto!important}
  .js [data-reveal]{opacity:1!important;transform:none!important;transition:none!important}
  .scroll-cue i::after{display:none}
}

/* =========================================================================
   RESPONSIVE — tablet (≤1024) / mobile (≤760)  (R1)
   ========================================================================= */
@media (max-width:1024px){
  :root{--header-h:70px}
  .hero__grid,.statement__grid,.why__grid,.engrave__grid,.cta__panel{grid-template-columns:1fr}
  .hero__stage{order:-1;margin-bottom:6px}
  .hero__tile{width:min(82%,360px)}
  .prod-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr;gap:0}
  .rstep::before{display:none}
  .why__media{aspect-ratio:16/10;max-height:420px}
  .fs-benefits{grid-template-columns:1fr;gap:26px}
  .footer__top{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  :root{--header-h:62px}
  .nav,.header-cta .btn{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;border:1.5px solid var(--line)}
  .nav-toggle span{position:relative;width:20px;height:2px;background:var(--espresso);display:block}
  .nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:20px;height:2px;background:var(--espresso);transition:.3s var(--ease)}
  .nav-toggle span::before{top:-6px}.nav-toggle span::after{top:6px}
  body.nav-open .nav-toggle span{background:transparent}
  body.nav-open .nav-toggle span::before{top:0;transform:rotate(45deg)}
  body.nav-open .nav-toggle span::after{top:0;transform:rotate(-45deg)}
  .mobile-nav{position:fixed;inset:var(--header-h) 0 0;z-index:55;background:var(--ivory);transform:translateY(-12px);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .3s var(--ease),transform .3s var(--ease),visibility 0s linear .3s;display:flex;flex-direction:column;padding:26px var(--gutter) 40px;gap:4px;overflow-y:auto}
  body.nav-open .mobile-nav{transform:none;opacity:1;visibility:visible;pointer-events:auto;transition:opacity .3s var(--ease),transform .3s var(--ease),visibility 0s}
  .mobile-nav a{font-family:var(--display);font-size:1.7rem;font-weight:600;padding:13px 0;border-bottom:1px solid var(--line);color:var(--espresso)}
  .mobile-nav a.btn{margin-top:20px;align-self:flex-start;color:#fff;border-bottom:0;font-size:1rem;padding:.92em 1.7em}
  .prod-grid{grid-template-columns:1fr}
  .footer__top{grid-template-columns:1fr}
  /* compact mobile hero so header + hero = one screen (R6) */
  .hero h1{font-size:clamp(2.5rem,11.5vw,3.3rem)}
  .hero .lead{margin-top:1rem}
  .hero__actions{margin-top:1.4rem}
  .hero__note{margin-top:1.2rem}
  .hero__tile{width:min(58%,224px);aspect-ratio:1}
  .hero__tile img{padding:7% 10%}
  .hero__chip{left:6px;bottom:18px;padding:9px 13px}
  .hero__chip .nm{font-size:1.02rem}
  .hero__seal{width:74px;right:-4px;top:10px}
}
@media (min-width:761px){.mobile-nav{display:none}}