/* tsuyu — 和草ブースター美容液 LP / mobile-first */
:root{
  --green:#28382E; --green-deep:#1E2A22; --sage:#7E8C76; --gold:#B89B5E;
  --cream:#F7F3EC; --cream2:#EFE9DD; --ink:#20211C; --ink-soft:#4A4B43; --white:#FFFFFF;
  --serif:"Noto Serif JP",serif; --sans:"Noto Sans JP",sans-serif; --display:"Cormorant Garamond",serif;
  --maxw:1120px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);background:var(--cream);line-height:1.85;font-size:15px;
  -webkit-font-smoothing:antialiased;letter-spacing:.02em}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}

/* ---- type & utility ---- */
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.eyebrow{font-family:var(--display);font-size:13px;letter-spacing:.3em;color:var(--gold);
  text-transform:uppercase;font-weight:600;display:block;margin-bottom:14px}
.s-head{font-family:var(--serif);font-weight:600;font-size:27px;line-height:1.5;letter-spacing:.04em}
.s-head .big{font-size:32px}
.rule{width:44px;height:1px;background:var(--gold);margin:20px 0 0}
.center{text-align:center}.center .rule{margin:20px auto 0}
.lead{font-size:15px;color:var(--ink-soft);line-height:2}
.section{padding:78px 0}
.bg-cream2{background:var(--cream2)}
.bg-green{background:var(--green);color:var(--cream)}
.bg-green .eyebrow{color:var(--gold)}
.bg-green .s-head,.bg-green .lead{color:var(--cream)}

/* ---- header ---- */
.site-head{position:absolute;top:0;left:0;width:100%;z-index:20;
  display:flex;align-items:center;justify-content:space-between;padding:18px 24px}
.brand{font-family:var(--display);font-size:27px;letter-spacing:.14em;color:var(--ink);font-weight:600;display:flex;align-items:center;gap:9px}
.brand .drop{width:11px;height:14px;background:var(--green);border-radius:50% 50% 50% 50%/60% 60% 40% 40%;
  transform:rotate(-8deg);box-shadow:inset -2px -2px 3px rgba(255,255,255,.35)}
.head-cta{font-family:var(--sans);font-size:12.5px;font-weight:700;letter-spacing:.06em;
  background:var(--green);color:var(--cream);padding:10px 18px;border-radius:3px}

/* ---- buttons ---- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font-family:var(--sans);
  font-weight:700;letter-spacing:.07em;background:var(--green);color:var(--cream);
  padding:18px 34px;border-radius:4px;font-size:16px;border:1px solid var(--green);
  box-shadow:0 5px 16px rgba(40,56,46,.16);transition:transform .15s ease,background .2s}
.btn:hover{transform:translateY(-2px);background:var(--green-deep)}
.btn .arrow{font-family:var(--display);font-size:20px}
.btn--gold{background:var(--gold);border-color:var(--gold);color:#2A2208;box-shadow:0 4px 14px rgba(184,155,94,.2)}
.btn--gold:hover{background:#A88B4F}
.btn--hero{border:1px solid rgba(247,243,236,.55)}
.micro-rr{margin-top:12px;font-size:11.5px;letter-spacing:.06em;color:var(--green);font-weight:500}

/* ---- FV ---- */
.hero{position:relative;min-height:94vh;display:flex;align-items:flex-start;
  background:var(--cream) url("fv-visual.png") no-repeat;
  background-size:cover;background-position:60% 38%;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(247,243,236,.96) 0%,rgba(247,243,236,.92) 32%,rgba(247,243,236,.58) 56%,rgba(247,243,236,0) 82%)}
.hero__inner{position:relative;z-index:2;width:100%;max-width:var(--maxw);margin:0 auto;padding:116px 24px 40px}
.hero__sup{font-family:var(--display);font-size:15px;letter-spacing:.34em;color:var(--green);font-weight:600;text-transform:uppercase;margin-bottom:16px}
.hero h1{font-family:var(--serif);font-weight:600;font-size:42px;line-height:1.42;letter-spacing:.04em;
  color:var(--ink);text-shadow:0 1px 12px rgba(247,243,236,.88)}
.hero__sub{margin-top:18px;font-size:15px;color:var(--ink-soft);max-width:28ch;line-height:2;text-shadow:0 1px 10px rgba(247,243,236,.9)}
.hero__tag{display:inline-block;margin-top:18px;font-size:12.5px;font-weight:700;color:var(--green);
  border:1px solid var(--sage);border-radius:4px;padding:6px 16px;background:rgba(247,243,236,.6)}
.hero__cta{margin-top:24px}

/* ---- problem (editorial gold-rule band) ---- */
.prob-grid{display:grid;gap:2px;margin-top:32px}
.prob-item{display:flex;gap:16px;align-items:center;background:transparent;
  border-left:3px solid var(--gold);padding:15px 4px 15px 18px}
.prob-item .no{font-family:var(--display);font-size:23px;color:var(--gold);font-weight:700;line-height:1.1}
.prob-item p{font-size:15px;font-weight:500}

/* ---- concept (green) ---- */
.concept__media{margin-top:30px}
.concept__media img{width:100%;border:none}
.concept__lead{margin-top:28px}

/* ---- full-bleed climax band ---- */
.bleed-band{position:relative;margin:46px 0 0}
.bleed-band>img{width:100vw;margin-left:calc(50% - 50vw);aspect-ratio:16/9;object-fit:cover;border:none}
.bleed-band__copy{position:absolute;inset:0;display:flex;align-items:center;padding:0 28px;
  background:linear-gradient(90deg,rgba(30,42,34,.5) 0%,rgba(30,42,34,.1) 45%,rgba(30,42,34,0) 70%)}
.bleed-band__jp{font-family:var(--serif);font-weight:600;font-size:25px;line-height:1.5;
  letter-spacing:.07em;color:var(--cream);text-shadow:0 1px 14px rgba(0,0,0,.3)}

/* ---- ingredients (image-dominant, name overlay) ---- */
.ing-grid{display:grid;gap:18px;margin-top:34px}
.ing-card{position:relative;overflow:hidden;background:transparent}
.ing-card img{aspect-ratio:4/5;object-fit:cover;width:100%}
.ing-card .body{position:absolute;left:0;right:0;bottom:0;padding:18px 18px 16px;
  background:linear-gradient(0deg,rgba(24,34,27,.82) 0%,rgba(24,34,27,.35) 55%,rgba(24,34,27,0) 100%)}
.ing-card .jp{font-family:var(--serif);font-weight:600;font-size:18px;letter-spacing:.04em;color:var(--cream)}
.ing-card .lat{font-family:var(--display);font-size:13px;letter-spacing:.16em;color:var(--gold);text-transform:uppercase;margin:1px 0 8px}
.ing-card p{font-size:13px;color:#EDE7D8;line-height:1.8}
.texture-row{margin-top:30px;display:grid;gap:22px;align-items:center}
.texture-row img{aspect-ratio:16/10;object-fit:cover;width:100%}
.texture-row .txt{font-size:15px;color:var(--ink-soft);line-height:2}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.chip{font-size:12.5px;font-weight:600;letter-spacing:.04em;color:var(--green);
  border:1px solid var(--sage);border-radius:3px;padding:8px 15px}

/* ---- steps (ruled list) ---- */
.steps{display:grid;gap:0;margin-top:32px}
.step{display:flex;gap:18px;align-items:flex-start;background:transparent;padding:22px 2px;border-bottom:1px solid #DDD3C0}
.step:last-child{border-bottom:none}
.step .num{flex:0 0 auto;width:42px;height:42px;border-radius:50%;background:var(--green);color:var(--cream);
  font-family:var(--display);font-size:20px;font-weight:700;display:flex;align-items:center;justify-content:center}
.step .stxt h4{font-family:var(--serif);font-size:16px;font-weight:600;margin-bottom:4px;letter-spacing:.03em}
.step .stxt p{font-size:13.5px;color:var(--ink-soft)}
.step-note{margin-top:24px;text-align:center;font-size:13.5px;color:var(--sage);font-weight:600;letter-spacing:.05em}

/* ---- voices (green) ---- */
.satis{display:flex;flex-wrap:wrap;gap:34px;justify-content:center;align-items:center;margin-top:36px}
.ring{width:150px;height:150px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:conic-gradient(var(--gold) 0 94%, rgba(247,243,236,.18) 94% 100%)}
.ring .inner{width:120px;height:120px;border-radius:50%;background:var(--green);display:flex;flex-direction:column;
  align-items:center;justify-content:center;text-align:center}
.ring .pct{font-family:var(--display);font-size:38px;font-weight:700;color:var(--gold);line-height:1}
.ring .lbl{font-size:11px;letter-spacing:.1em;margin-top:4px;color:var(--cream)}
.stars{text-align:center}
.stars .st{color:var(--gold);font-size:26px;letter-spacing:3px}
.stars .sc{font-family:var(--display);font-size:30px;color:var(--cream);display:block;margin-top:2px}
.voices{display:grid;gap:18px;margin-top:34px}
.voice{padding:6px 0 6px 20px;border-left:2px solid var(--gold)}
.voice .who{font-family:var(--display);font-size:14px;letter-spacing:.12em;color:var(--gold);margin-bottom:8px;font-weight:600}
.voice p{font-size:14.5px;color:var(--cream);line-height:1.95}
.demo-note{font-size:11.5px;color:var(--sage);margin-top:24px;text-align:center;line-height:1.7}

/* ---- comparison ---- */
.compare{display:grid;gap:0;margin-top:34px;align-items:stretch;border:1px solid #E0D7C5}
.compare .col{padding:28px 24px}
.compare .col.a{background:var(--white)}
.compare .col.b{background:var(--green);color:var(--cream)}
.compare .col .tag{font-family:var(--display);font-size:13px;letter-spacing:.16em;text-transform:uppercase;font-weight:600;margin-bottom:12px;display:block}
.compare .col.a .tag{color:var(--sage)}
.compare .col.b .tag{color:var(--gold)}
.compare .col h4{font-family:var(--serif);font-size:17px;font-weight:600;margin-bottom:10px;letter-spacing:.03em}
.compare .col p{font-size:14px;line-height:1.95}
.compare .col.a p{color:var(--ink-soft)}
.compare-line{margin-top:24px;text-align:center;font-family:var(--serif);font-size:17px;color:var(--green);font-weight:600;letter-spacing:.03em}

/* ---- pricing (green) ---- */
.price-card{background:var(--cream);color:var(--ink);margin-top:34px;padding:36px 26px;text-align:center;
  box-shadow:0 14px 40px rgba(20,28,22,.22)}
.price-card .normal{font-size:14px;color:var(--ink-soft)}
.price-card .normal s{color:#A89C86}
.price-card .off{display:inline-block;background:var(--gold);color:#2A2208;font-weight:700;font-size:13px;
  padding:5px 14px;border-radius:3px;margin:14px 0 10px;letter-spacing:.06em}
.price-card .now{font-family:var(--serif);font-weight:600;color:var(--green)}
.price-card .now .yen{font-size:22px}.price-card .now .big{font-size:52px;letter-spacing:.02em;margin:0 2px}
.price-card .tax{font-size:12px;color:var(--ink-soft)}
.price-card .second{font-size:13px;color:var(--ink-soft);margin-top:6px}
.price-pack{width:100%;max-width:260px;margin:0 auto}
.reassure{margin:20px 0 8px;font-size:12.5px;color:var(--green);line-height:1.8;font-weight:500}
.reassure b{color:var(--green)}
.trust{display:flex;flex-wrap:wrap;justify-content:center;gap:6px 18px;margin:14px 0 22px;list-style:none}
.trust li{font-size:12.5px;font-weight:600;color:var(--green)}
.trust li::before{content:"・";color:var(--gold);margin-right:4px;font-weight:700}
.price-demo{font-size:11px;color:#9A8F7B;margin-top:14px}
#order{margin-top:18px;padding:14px;border:1px dashed var(--sage);font-size:11.5px;color:var(--ink-soft);line-height:1.7}

/* ---- faq ---- */
.faq{margin-top:32px;border-top:1px solid #DDD3C0}
.faq details{border-bottom:1px solid #DDD3C0}
.faq summary{list-style:none;cursor:pointer;padding:20px 38px 20px 4px;position:relative;
  font-family:var(--serif);font-weight:600;font-size:15px;letter-spacing:.03em}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"Q";font-family:var(--display);color:var(--gold);font-weight:700;margin-right:12px}
.faq summary::after{content:"+";position:absolute;right:6px;top:18px;font-size:22px;color:var(--sage);font-weight:300}
.faq details[open] summary::after{content:"–"}
.faq .ans{padding:0 4px 22px 30px;font-size:13.5px;color:var(--ink-soft);line-height:1.95}

/* ---- closing ---- */
.closing{position:relative;background:var(--green);color:var(--cream);text-align:center;padding:92px 0}
.closing h2{font-family:var(--serif);font-weight:600;font-size:34px;letter-spacing:.05em;line-height:1.5}
.closing p{margin-top:16px;color:var(--cream);font-size:15px}
.closing .btn{margin-top:30px}
.closing .micro-rr{color:#C9CEC1;margin-top:14px}

/* ---- footer ---- */
.foot{background:var(--green-deep);color:#B9BEB4;padding:48px 0 124px;font-size:12px;line-height:1.9}
.foot .brand{color:var(--cream);margin-bottom:16px}
.foot .disc{max-width:60ch;color:#8E948A}
.foot .cr{margin-top:20px;color:#6E7468;letter-spacing:.1em}

/* ---- sticky mobile CTA ---- */
.sticky-cta{position:fixed;left:0;bottom:0;width:100%;z-index:40;background:rgba(30,42,34,.97);
  backdrop-filter:blur(6px);padding:10px 16px;display:flex;align-items:center;gap:12px;
  box-shadow:0 -4px 20px rgba(0,0,0,.18)}
.sticky-cta .sc-price{color:var(--cream);font-size:11px;line-height:1.3;flex:0 0 auto}
.sticky-cta .sc-price b{font-family:var(--display);font-size:19px;color:var(--gold);display:block}
.sticky-cta .btn{flex:1;padding:14px 12px;font-size:14px;box-shadow:none}

/* ================= PC ================= */
@media (min-width:768px){
  body{font-size:16px}
  .section{padding:118px 0}
  .bg-green.section{padding:150px 0}
  .s-head{font-size:40px;line-height:1.45}.s-head .big{font-size:48px}
  .hero{min-height:96vh;background-position:center}
  .hero::before{background:linear-gradient(100deg,rgba(247,243,236,.94) 0%,rgba(247,243,236,.6) 36%,rgba(247,243,236,0) 60%)}
  .hero__inner{padding:0 24px;display:flex;align-items:center;min-height:96vh}
  .hero__copy{max-width:52%}
  .hero__sup{font-size:16px}
  .hero h1{font-size:60px;line-height:1.38}
  .hero__sub{font-size:16px;margin-top:22px;max-width:30ch}
  .prob-grid{grid-template-columns:1fr 1fr;gap:4px 40px}
  .ing-grid{grid-template-columns:repeat(3,1fr);gap:22px}
  .bleed-band>img{aspect-ratio:16/5}
  .bleed-band__copy{padding-left:max(28px,calc(50vw - 560px + 24px))}
  .bleed-band__jp{font-size:38px;line-height:1.45}
  .texture-row{grid-template-columns:1.1fr .9fr;gap:40px}
  .steps{grid-template-columns:repeat(3,1fr);gap:0 32px}
  .step{border-bottom:none;border-top:1px solid #DDD3C0;padding:24px 0}
  .voices{grid-template-columns:repeat(3,1fr)}
  .compare{grid-template-columns:1fr 1fr}
  .price-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:center;margin-top:40px}
  .price-card{margin-top:0}
  .closing h2{font-size:46px}
  .sticky-cta{display:none}
  .foot{padding-bottom:60px}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto;transition:none!important}}