/* ============ Design Tokens (flat-canvas-product / personal-wellness) ============ */
:root{
  --canvas:#FFFFFF;
  --canvas-soft:#F8F6F2;      /* warm paper wash */
  --canvas-cool:#F1F6FB;      /* light cool wash */
  --ink:#232830;
  --ink-soft:#5B616E;
  --ink-faint:#8A90A0;
  --line:#E8E6E1;
  --accent:#FF7A2F;           /* single primary action color (warm orange) */
  --accent-deep:#F2631A;
  --accent-soft:#FFF1E6;
  /* controlled supporting hues, illustrations/traits only, never buttons */
  --c-open:#8B6FE8;  --c-open-soft:#F1ECFC;
  --c-cons:#3E8BFF;  --c-cons-soft:#EAF3FF;
  --c-extr:#FF9F45;  --c-extr-soft:#FFF3E4;
  --c-agree:#3ECFA0; --c-agree-soft:#E5FAF2;
  --c-neur:#F47FB2;  --c-neur-soft:#FDECF4;

  --radius-card:24px;
  --radius-ctrl:14px;
  --shadow-card:0 2px 4px rgba(35,40,48,.04),0 10px 28px rgba(35,40,48,.05);
  --shadow-lift:0 4px 10px rgba(35,40,48,.10);

  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei UI","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;

  --container:1120px;
  --gutter:clamp(20px,4vw,40px);
  --section-pad:clamp(64px,9vw,112px);
}
/* ============ Base ============ */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}
body{
  margin:0;
  font-family:var(--font);
  color:var(--ink);
  background:var(--canvas);
  line-height:1.65;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
::selection{background:var(--accent-soft);color:var(--ink)}
.skip-link{
  position:absolute;left:16px;top:-48px;z-index:100;
  background:var(--ink);color:#fff;padding:10px 16px;border-radius:10px;
  font-size:14px;transition:top .2s;
}
.skip-link:focus{top:12px;color:#fff}
.container{width:min(var(--container),100% - var(--gutter)*2);margin-inline:auto}
h1,h2,h3{line-height:1.18;margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--accent-deep);
  text-transform:uppercase;
}
.section-head{margin-bottom:clamp(32px,5vw,56px)}
.section-head .eyebrow{margin-bottom:14px}
.section-head h2{font-size:clamp(28px,4vw,40px)}
.section-lead{color:var(--ink-soft);font-size:clamp(16px,2vw,18px);max-width:640px;margin-top:14px}
/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:16px;font-weight:600;line-height:1;
  border-radius:var(--radius-ctrl);padding:0 26px;height:54px;
  cursor:pointer;border:1px solid transparent;
  transition:transform .15s ease,box-shadow .15s ease,background-color .15s ease,color .15s ease;
  -webkit-tap-highlight-color:transparent;
}
.btn svg{width:18px;height:18px}
.btn-primary{
  background:var(--accent);color:#fff;box-shadow:0 6px 16px rgba(255,122,47,.35);
}
.btn-primary:hover{background:var(--accent-deep);transform:translateY(-1px);box-shadow:0 10px 22px rgba(255,122,47,.40)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--ink);background:var(--canvas)}
.btn:focus-visible,.to-top:focus-visible,.hamburger:focus-visible,.faq summary:focus-visible,.mobile-cta:focus-visible{
  outline:3px solid var(--accent);outline-offset:3px;border-radius:var(--radius-ctrl);
}
/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color .2s,box-shadow .2s;
}
.site-header.scrolled{border-color:var(--line);box-shadow:0 8px 24px rgba(35,40,48,.05)}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  height:64px;
}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:17px}
.logo svg{width:30px;height:30px;flex:none}
.logo span strong{font-weight:700}
.logo small{display:block;font-size:11px;font-weight:500;color:var(--ink-faint);line-height:1.1;letter-spacing:.02em}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;
  font-size:15px;color:var(--ink-soft);border-radius:10px;font-weight:500;
  transition:color .15s,background-color .15s;
}
.main-nav a:hover{color:var(--ink);background:var(--canvas-soft)}
.header-cta{height:44px;padding:0 20px;font-size:15px}
.hamburger{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border:1px solid var(--line);border-radius:12px;
  background:var(--canvas);cursor:pointer;color:var(--ink);
}
.hamburger svg{width:20px;height:20px}
/* ============ Hero / Part1 ============ */
.hero{
  padding-block:clamp(48px,8vw,96px) clamp(48px,7vw,88px);
  position:relative;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(900px 420px at 82% -10%, var(--accent-soft) 0%, transparent 60%),
    radial-gradient(700px 380px at -8% 110%, var(--c-cons-soft) 0%, transparent 55%),
    var(--canvas);
}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:clamp(28px,5vw,64px);align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:7px 14px;font-size:13px;font-weight:600;color:var(--ink);
  box-shadow:0 2px 8px rgba(35,40,48,.05);
}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--accent)}
.hero h1{font-size:clamp(34px,5.4vw,56px);margin-top:18px}
.hero h1 em{font-style:normal;color:var(--accent-deep)}
.hero-lead{
  margin-top:18px;font-size:clamp(16px,2.2vw,19px);color:var(--ink-soft);max-width:560px;
}
.hero-lead strong{color:var(--ink)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px 26px;margin:26px 0 0;padding:0;list-style:none;color:var(--ink-soft);font-size:14px}
.hero-meta li{display:inline-flex;align-items:center;gap:8px}
.hero-meta svg{width:16px;height:16px;color:var(--accent-deep)}
/* hero artwork */
.hero-art{position:relative}
.hero-art .art-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:clamp(16px,2.5vw,26px);
}
.art-title{display:flex;align-items:center;justify-content:space-between;font-size:13px;font-weight:600;color:var(--ink-faint);padding:0 2px 12px}
.art-dots{display:flex;gap:6px}
.art-dots i{width:8px;height:8px;border-radius:50%;background:var(--line)}
.art-dots i:first-child{background:var(--accent)}
.spec{display:flex;align-items:flex-end;gap:clamp(10px,1.6vw,18px);padding-top:6px}
.spec-col{flex:1;display:flex;flex-direction:column;align-items:center;gap:8px}
.spec-bar{
  width:100%;border-radius:10px 10px 4px 4px;position:relative;
  min-height:24px;display:flex;align-items:center;justify-content:center;
}
.spec-bar .tick{width:10px;height:10px;border-radius:50%;background:#fff;box-shadow:0 1px 3px rgba(35,40,48,.3)}
.spec-bar.b-open{background:var(--c-open)}
.spec-bar.b-cons{background:var(--c-cons)}
.spec-bar.b-extr{background:var(--c-extr)}
.spec-bar.b-agree{background:var(--c-agree)}
.spec-bar.b-neur{background:var(--c-neur)}
.spec-label{font-size:11px;font-weight:600;color:var(--ink-soft)}
.spec-note{text-align:center;font-size:12px;color:var(--ink-faint);padding-top:12px;border-top:1px dashed var(--line);margin-top:12px}
.art-sticker{
  position:absolute;right:-8px;bottom:-16px;
  background:var(--ink);color:#fff;border-radius:16px;
  padding:10px 16px;font-size:13px;font-weight:600;display:flex;align-items:center;gap:8px;
  box-shadow:var(--shadow-lift);
}
.art-sticker svg{width:16px;height:16px;color:#FFD9A0}
.hero-art::after{
  content:"";position:absolute;z-index:-1;inset:8% -6% -6% 8%;
  border-radius:40px;opacity:.7;filter:blur(2px);
  background:linear-gradient(140deg,var(--c-cons-soft),var(--accent-soft),var(--c-agree-soft));
}
/* ============ Section bands ============ */
.band{padding-block:var(--section-pad)}
.band-soft{background:var(--canvas-soft)}
.band-cool{background:var(--canvas-cool)}
/* ============ Part2 Traits ============ */
.trait-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px}
.trait-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 22px 24px;box-shadow:var(--shadow-card);
  display:flex;flex-direction:column;gap:12px;
  transition:transform .2s ease,box-shadow .2s ease;
}
.trait-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift)}
.trait-icon{
  width:52px;height:52px;border-radius:16px;flex:none;
  display:flex;align-items:center;justify-content:center;
}
.trait-icon svg{width:26px;height:26px}
.trait-card h3{font-size:20px;line-height:1.25;display:flex;flex-direction:column;gap:2px}
.trait-card h3 .en{font-size:11.5px;font-weight:600;color:var(--ink-faint);letter-spacing:.05em}
.trait-card p{font-size:14.5px;color:var(--ink-soft);line-height:1.6}
.trait-tag{
  align-self:flex-start;font-size:12px;font-weight:600;border-radius:999px;
  padding:4px 10px;margin-top:auto;
}
.ic-open{background:var(--c-open-soft);color:var(--c-open)}
.ic-cons{background:var(--c-cons-soft);color:var(--c-cons)}
.ic-extr{background:var(--c-extr-soft);color:var(--c-extr)}
.ic-agree{background:var(--c-agree-soft);color:var(--c-agree)}
.ic-neur{background:var(--c-neur-soft);color:var(--c-neur)}
/* ============ Part3 Theory ============ */
.theory-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(24px,4vw,48px);align-items:start}
.theory-block{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:clamp(22px,3vw,30px)}
.theory-block h3{font-size:18px;display:flex;align-items:center;gap:10px;margin-bottom:10px}
.theory-block p{font-size:15px;color:var(--ink-soft)}
.theory-block p + p{margin-top:10px}
.theory-chip{
  display:flex;align-items:center;gap:8px;font-size:12px;font-weight:600;color:var(--ink);
  background:var(--canvas-cool);border-radius:999px;padding:6px 12px;width:fit-content;
}
.dim-chips{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:14px}
.dim-chip{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:12px;font-weight:600;border-radius:14px;padding:12px 10px;min-height:66px;
  background:var(--canvas-cool);text-align:center;
}
.dim-chip b{font-size:12px;color:var(--ink);font-weight:700;line-height:1.25;white-space:nowrap}
.dim-chip i{font-style:normal;font-size:11px;color:var(--ink-faint);letter-spacing:.04em;line-height:1.2}
.ocean{display:flex;align-items:center;justify-content:center;margin-top:16px}
.ocean svg{width:100%;max-width:380px;height:auto}
.origin-tag{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;color:var(--ink-faint);margin-top:14px}
/* compare table */
.compare-cap{font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--ink-faint);margin-bottom:14px;text-transform:uppercase}
.compare-table{
  width:100%;border-collapse:separate;border-spacing:0;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  font-size:14.5px;
}
.compare-table th,.compare-table td{
  text-align:left;padding:14px 18px;border-bottom:1px solid var(--line);vertical-align:top;
}
.compare-table thead th{background:var(--canvas-soft);font-weight:700;font-size:14px}
.compare-table tbody tr:last-child th,.compare-table tbody tr:last-child td{border-bottom:none}
.compare-table th[scope=row]{font-weight:600;white-space:nowrap}
.compare-table td{color:var(--ink-soft)}
.cmp-big{color:var(--accent-deep);font-weight:600}
/* ============ Part4 Careers ============ */
.career-list{display:flex;flex-direction:column;gap:14px}
.career-row{
  background:#fff;border:1px solid var(--line);border-radius:20px;
  padding:20px 22px;display:grid;grid-template-columns:56px minmax(0,1fr);
  gap:6px 18px;align-items:start;box-shadow:var(--shadow-card);
  transition:box-shadow .2s ease,transform .2s ease;
}
.career-row:hover{box-shadow:var(--shadow-lift);transform:translateY(-2px)}
.career-badge{
  grid-row:span 3;width:56px;height:56px;border-radius:18px;
  display:flex;align-items:center;justify-content:center;
  align-self:start;
}
.career-badge svg{width:28px;height:28px}
.career-row h3{font-size:17px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.career-row h3 .en{font-size:12px;font-weight:600;color:var(--ink-faint)}
.career-row p{font-size:14.5px;color:var(--ink-soft)}
.career-jobs{display:flex;flex-wrap:wrap;gap:8px}
.career-jobs span{
  font-size:12.5px;font-weight:600;color:var(--ink);
  background:var(--canvas-soft);border:1px solid var(--line);border-radius:999px;padding:5px 12px;
}
.career-note{
  margin-top:20px;font-size:13px;color:var(--ink-faint);
  display:flex;align-items:flex-start;gap:8px;
}
.career-note svg{width:15px;height:15px;flex:none;margin-top:2px;color:var(--accent-deep)}
/* ============ Part5 FAQ ============ */
#faq .section-head{text-align:center}
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:820px;margin-inline:auto}
.faq{
  background:#fff;border:1px solid var(--line);border-radius:18px;
  box-shadow:var(--shadow-card);overflow:hidden;
}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;
  padding:18px 22px;font-size:16px;font-weight:600;
  transition:color .15s;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--accent-deep)}
.faq .faq-icon{
  flex:none;width:24px;height:24px;border-radius:50%;background:var(--accent-soft);
  display:flex;align-items:center;justify-content:center;transition:transform .2s ease,background-color .2s ease;
}
.faq .faq-icon svg{width:12px;height:12px;color:var(--accent-deep)}
.faq[open] .faq-icon{transform:rotate(45deg);background:var(--accent)}
.faq[open] .faq-icon svg{color:#fff}
.faq .faq-body{padding:0 22px 20px;font-size:15px;color:var(--ink-soft);line-height:1.7}
.faq .faq-body p + p{margin-top:8px}
/* ============ CTA band ============ */
.cta-band{
  padding-block:clamp(64px,9vw,104px);
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(760px 320px at 15% 20%, var(--c-extr-soft) 0%, transparent 60%),
    radial-gradient(760px 340px at 88% 90%, var(--c-agree-soft) 0%, transparent 60%),
    var(--canvas-cool);
}
.cta-box{
  background:var(--ink);color:#fff;border-radius:32px;
  padding:clamp(32px,6vw,64px);text-align:center;
  position:relative;overflow:hidden;
}
.cta-box::after{
  content:"";position:absolute;right:-40px;top:-40px;width:200px;height:200px;border-radius:50%;
  background:radial-gradient(circle, rgba(255,255,255,.12), transparent 65%);
}
.cta-box h2{font-size:clamp(26px,4vw,40px)}
.cta-box p{color:rgba(255,255,255,.72);max-width:520px;margin:14px auto 0}
.cta-box .btn{margin-top:30px}
.cta-box .meta-line{font-size:13px;color:rgba(255,255,255,.55);margin-top:18px;display:flex;justify-content:center;flex-wrap:wrap;gap:8px 18px}
/* ============ Footer ============ */
.site-footer{
  border-top:1px solid var(--line);padding:40px 0 120px;
  font-size:13px;color:var(--ink-faint);
}
@media (min-width:769px){.site-footer{padding-bottom:40px}}
.footer-inner{display:flex;flex-wrap:wrap;gap:18px;justify-content:space-between;align-items:center}
.footer-inner nav{display:flex;gap:6px;flex-wrap:wrap}
.footer-inner nav a{padding:6px 10px;border-radius:8px;color:var(--ink-soft)}
.footer-inner nav a:hover{color:var(--ink);background:var(--canvas-soft)}
.footer-note{margin-top:16px;max-width:760px;line-height:1.7}
/* ============ Mobile bottom CTA ============ */
.mobile-cta{
  position:fixed;left:16px;right:16px;bottom:calc(14px + env(safe-area-inset-bottom));
  z-index:60;display:none;
  height:54px;border-radius:18px;box-shadow:0 12px 30px rgba(255,122,47,.45);
  width:auto;
  opacity:0;visibility:hidden;transform:translateY(12px);pointer-events:none;
  transition:opacity .25s ease,transform .25s ease,visibility .25s;
}
.mobile-cta.show{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto}
/* ============ Back to top ============ */
.to-top{
  position:fixed;right:20px;bottom:calc(20px + env(safe-area-inset-bottom));
  z-index:55;width:46px;height:46px;border-radius:14px;
  background:var(--ink);color:#fff;border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-lift);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:#3A4150}
.to-top svg{width:18px;height:18px}
/* ============ Reveal on scroll ============ */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .45s ease,transform .45s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}}
/* ============ Responsive ============ */
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr}
  .hero-art{max-width:520px}
  .theory-grid{grid-template-columns:1fr}
}
@media (max-width:768px){
  body{font-size:16px}
  .hide-m{display:none!important}
  .dim-chips{grid-template-columns:repeat(2,1fr)}
  .dim-chips .dim-chip:last-child{grid-column:1/-1}
  .main-nav{
    position:absolute;top:64px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:2px;padding:14px var(--gutter) 20px;
    background:rgba(255,255,255,.98);border-bottom:1px solid var(--line);
    box-shadow:0 18px 30px rgba(35,40,48,.08);
    display:none;
  }
  .main-nav.open{display:flex}
  .main-nav a{height:44px;font-size:16px;justify-content:flex-start;padding:0 12px}
.hamburger{display:inline-flex}
  .mobile-cta{display:inline-flex}
  .to-top{right:16px;bottom:calc(84px + env(safe-area-inset-bottom))}
  .hero-actions .btn{flex:1;max-width:none}
  .career-row{grid-template-columns:48px minmax(0,1fr);gap:4px 14px}
  .career-badge{width:48px;height:48px;border-radius:15px}
  .compare-table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;white-space:normal}
  .compare-table th,.compare-table td{padding:12px 14px}
}
@media (max-width:380px){
  .hero .btn{height:52px;font-size:15px}
}