/* =========================================================
   SDAI · 缓释 AKG 抗衰官网
   Design System
   ========================================================= */

:root {
  /* Brand */
  --blue-900: #06304a;
  --blue-700: #0a6fa8;
  --blue-600: #0a95d8;
  --blue-500: #1aa7ec;
  --blue-400: #4dbdf3;
  --blue-100: #d8f0fc;
  --blue-50:  #eef9ff;

  --orange-700: #c2530f;
  --orange-600: #f26a1b;
  --orange-500: #f9821f;
  --orange-400: #fb9d4d;
  --orange-100: #ffe7d2;
  --orange-50:  #fff5ec;

  /* Neutrals */
  --ink: #0b1220;
  --ink-soft: #1c2733;
  --slate-700: #334155;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --slate-300: #cbd5e1;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --paper: #f7f9fb;
  --white: #ffffff;

  /* Dynamic accent (switched per gender theme) */
  --accent-700: var(--blue-700);
  --accent-600: var(--blue-600);
  --accent-500: var(--blue-500);
  --accent-400: var(--blue-400);
  --accent-100: var(--blue-100);
  --accent-50:  var(--blue-50);
  --accent-grad: linear-gradient(120deg, #0a95d8 0%, #1aa7ec 55%, #4dbdf3 100%);
  --accent-shadow: rgba(10, 149, 216, 0.28);

  /* Type */
  --font-sans: "Manrope", "Inter", "Noto Sans SC", -apple-system, BlinkMacSystemFont,
    "Segoe UI", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  --font-display: "Sora", "Manrope", "Noto Sans SC", -apple-system, "PingFang SC",
    "Microsoft YaHei", sans-serif;

  /* Layout */
  --container: 1200px;
  --radius-sm: 10px;
  --radius: 18px;
  --radius-lg: 28px;
  --radius-xl: 40px;
  --shadow-sm: 0 2px 10px rgba(15, 30, 50, 0.06);
  --shadow: 0 18px 50px rgba(15, 30, 50, 0.10);
  --shadow-lg: 0 40px 90px rgba(11, 30, 55, 0.16);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* Orange theme scope */
[data-theme="female"] {
  --accent-700: var(--orange-700);
  --accent-600: var(--orange-600);
  --accent-500: var(--orange-500);
  --accent-400: var(--orange-400);
  --accent-100: var(--orange-100);
  --accent-50:  var(--orange-50);
  --accent-grad: linear-gradient(120deg, #e85d12 0%, #f9821f 55%, #fb9d4d 100%);
  --accent-shadow: rgba(242, 106, 27, 0.28);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--white);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* ---------- Layout helpers ---------- */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 110px 0; }
.section--tight { padding: 80px 0; }
.section--paper { background: var(--paper); }
.section--ink { background: var(--ink); color: #e8eef6; }
.center { text-align: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--accent-600);
  padding: 7px 16px; border-radius: 999px;
  background: var(--accent-50);
  border: 1px solid var(--accent-100);
}
.section--ink .eyebrow { background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.12); }

h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.15; letter-spacing: -0.01em; font-weight: 700; }
.h-display { font-size: clamp(2.6rem, 5.6vw, 4.4rem); font-weight: 800; letter-spacing: -0.02em; }
.h-section { font-size: clamp(2rem, 3.8vw, 3rem); font-weight: 800; letter-spacing: -0.02em; }
.lead { font-size: clamp(1.05rem, 1.4vw, 1.25rem); color: var(--slate-500); max-width: 720px; }
.section--ink .lead { color: #9fb3c8; }
.muted { color: var(--slate-500); }
.text-grad {
  background: var(--accent-grad);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.section-head { max-width: 760px; margin: 0 auto 60px; }
.section-head.center { text-align: center; }
.section-head .h-section { margin: 18px 0 18px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 15px 30px; border-radius: 999px; font-weight: 700; font-size: 15px;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), background .3s, color .3s;
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; }
.btn--primary { color: #fff; background: var(--accent-grad); box-shadow: 0 14px 30px var(--accent-shadow); }
.btn--primary:hover { transform: translateY(-3px); box-shadow: 0 22px 44px var(--accent-shadow); }
.btn--ghost { color: var(--ink); background: var(--white); border: 1.5px solid var(--slate-200); }
.btn--ghost:hover { border-color: var(--accent-400); color: var(--accent-700); transform: translateY(-3px); }
.btn--light { color: var(--accent-700); background: #fff; }
.btn--light:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.btn--outline-light { color: #fff; border: 1.5px solid rgba(255,255,255,.35); }
.btn--outline-light:hover { background: rgba(255,255,255,.1); transform: translateY(-3px); }
.btn--lg { padding: 18px 38px; font-size: 16px; }
.btn--block { width: 100%; }

/* ---------- Navbar ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  transition: background .4s, box-shadow .4s, backdrop-filter .4s;
}
.nav__inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 78px;
}
.nav.scrolled {
  background: rgba(255,255,255,0.82);
  backdrop-filter: saturate(160%) blur(18px);
  -webkit-backdrop-filter: saturate(160%) blur(18px);
  box-shadow: 0 1px 0 rgba(15,30,50,.06), 0 12px 30px rgba(15,30,50,.05);
}
.nav__logo { display: flex; align-items: center; gap: 12px; }
.nav__logo img { height: 30px; width: auto; }
.nav__menu { display: flex; align-items: center; gap: 6px; }
.nav__link {
  position: relative; padding: 10px 16px; font-weight: 600; font-size: 15px; color: var(--slate-700);
  border-radius: 999px; transition: color .25s, background .25s;
}
.nav__link:hover, .nav__link.active { color: var(--accent-700); }
.nav__link.active { background: var(--accent-50); }
.nav__actions { display: flex; align-items: center; gap: 6px; }
.nav__cta { padding: 11px 22px; font-size: 14px; }
.nav__icon { position: relative; width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; color: var(--ink); transition: background .25s, color .25s; }
.nav__icon svg { width: 21px; height: 21px; }
.nav__icon:hover { background: var(--accent-50); color: var(--accent-700); }
.nav__badge { position: absolute; top: 3px; right: 3px; min-width: 17px; height: 17px; padding: 0 4px; border-radius: 999px; background: var(--accent-grad); color: #fff; font-size: 10.5px; font-weight: 800; display: grid; place-items: center; line-height: 1; box-shadow: 0 2px 6px var(--accent-shadow); }
.nav__badge.is-empty { display: none; }
.nav__lang { display: inline-flex; align-items: center; gap: 2px; background: var(--slate-100); border-radius: 999px; padding: 3px; margin-left: 4px; }
.nav__lang-opt { padding: 6px 11px; border-radius: 999px; font-size: 13px; font-weight: 800; color: var(--slate-500); transition: .25s; line-height: 1; }
.nav__lang-opt.active { background: #fff; color: var(--accent-700); box-shadow: var(--shadow-sm); }
.nav__burger { display: none; width: 44px; height: 44px; border-radius: 12px; align-items: center; justify-content: center; }
.nav__burger span { position: relative; width: 20px; height: 2px; background: var(--ink); border-radius: 2px; transition: .3s; }
.nav__burger span::before, .nav__burger span::after { content: ""; position: absolute; left: 0; width: 20px; height: 2px; background: var(--ink); border-radius: 2px; transition: .3s; }
.nav__burger span::before { top: -6px; } .nav__burger span::after { top: 6px; }
.nav.open .nav__burger span { background: transparent; }
.nav.open .nav__burger span::before { top: 0; transform: rotate(45deg); }
.nav.open .nav__burger span::after { top: 0; transform: rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 160px 0 90px; overflow: hidden; }
.hero__bg { position: absolute; inset: 0; z-index: -2;
  /*
  background:
  radial-gradient(1100px 600px at 78% -5%, var(--accent-50), transparent 60%),
  radial-gradient(900px 500px at 0% 100%, var(--slate-100), transparent 55%);
  */
  background: var(--paper);
}
.hero__blob { position: absolute; z-index: -1; filter: blur(10px); opacity: .55; border-radius: 50%; }
.hero__blob--1 { width: 420px; height: 420px; right: -80px; top: 40px; background: radial-gradient(circle at 30% 30%, var(--accent-400), transparent 70%); }
.hero__blob--2 { width: 320px; height: 320px; left: -60px; bottom: -40px; background: radial-gradient(circle at 50% 50%, var(--accent-100), transparent 70%); }
.hero__grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 50px; align-items: center; }
.hero__title { margin: 22px 0 22px; }
.hero__sub { font-size: clamp(1.05rem, 1.5vw, 1.3rem); color: var(--slate-700); max-width: 560px; margin-bottom: 14px; font-weight: 500; }
.hero__cta { display: flex; gap: 14px; flex-wrap: wrap; margin: 32px 0 28px; }
.hero__trust { display: flex; flex-wrap: wrap; gap: 10px 22px; padding-top: 26px; border-top: 1px solid var(--slate-200); }
.hero__trust span { display: inline-flex; align-items: center; gap: 8px; font-size: 13.5px; font-weight: 600; color: var(--slate-500); }
.hero__trust svg { width: 16px; height: 16px; color: var(--accent-600); flex: none; }

/* Hero product visual */
.hero__visual { position: relative; display: grid; place-items: center; }
.hero__product-card {
  position: relative; width: 100%; max-width: 460px; aspect-ratio: 1/1.04;
  border-radius: var(--radius-xl);
  background: var(--accent-grad);
  display: grid; place-items: center; overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.hero__product-card::after { content: ""; position: absolute; inset: 0;
  background: radial-gradient(120% 80% at 50% 0%, rgba(255,255,255,.35), transparent 55%); }
.hero__product-card img { width: 76%; filter: drop-shadow(0 30px 50px rgba(0,0,0,.35)); position: relative; z-index: 1;
  transition: transform .6s var(--ease); }
.hero__product-card:hover img { transform: translateY(-10px) scale(1.02); }
.hero__toggle, .hero__toggles {
  position: relative; z-index: 3; display: inline-flex; gap: 4px; margin-bottom: 22px;
  background: #fff; padding: 5px; border-radius: 999px; box-shadow: var(--shadow-sm);
}
.hero__toggles {
  /* box-shadow: 0 0 10px 5px #0003; */
}
.hero__toggle button, .hero__toggles button {
  padding: 9px 22px; border-radius: 999px; font-weight: 700; font-size: 14px; color: var(--slate-500);
  transition: .3s;
}
.hero__toggle button.active, .hero__toggles button.active { color: #fff; background: var(--accent-grad); }
.hero__badge {
  position: absolute; z-index: 4; background: #fff; border-radius: 16px; padding: 14px 18px;
  box-shadow: var(--shadow); display: flex; align-items: center; gap: 12px;
}
.hero__badge--tl { left: -6px; top: 12%; }
.hero__badge--br { right: -10px; bottom: 14%; }
.hero__badge .num { font-family: var(--font-display); font-weight: 800; font-size: 1.5rem; color: var(--accent-700); line-height: 1; }
.hero__badge .lbl { font-size: 12px; color: var(--slate-500); font-weight: 600; }

/* ---------- Marquee / logos ---------- */
.trustbar { border-top: 1px solid var(--slate-200); border-bottom: 1px solid var(--slate-200); background: var(--paper); }
.trustbar__inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; padding: 30px 0; }
.trustbar__item { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--slate-500); font-size: 15px; letter-spacing: .01em; }
.trustbar__item svg { width: 22px; height: 22px; color: var(--accent-600); }

/* ---------- Stat / cards generic ---------- */
.grid { display: grid; gap: 26px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.card {
  position: relative;
  background: #fff; border: 1px solid var(--slate-200); border-radius: var(--radius-lg);
  padding: 34px; transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .4s;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--accent-100); }
.card__icon {
  width: 56px; height: 56px; border-radius: 16px; display: grid; place-items: center;
  background: var(--accent-50); color: var(--accent-700); margin-bottom: 20px;
}
.card__icon svg { width: 26px; height: 26px; }
.card h3 { font-size: 1.3rem; margin-bottom: 10px; }
.card p { color: var(--slate-500); font-size: 15px; }
.card .card__num {
  position: absolute;
  top: 34px; right: 34px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 4rem;
  color: var(--slate-100);
  line-height: 1;
}

/* ---------- Aging curve / why section ---------- */
.why { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 56px; align-items: center; }
.age-step { display: flex; gap: 20px; padding: 22px 0; border-bottom: 1px dashed var(--slate-200); }
.age-step:last-child { border-bottom: none; }
.age-step__age { font-family: var(--font-display); font-weight: 800; font-size: 1.9rem; color: var(--accent-700); min-width: 86px; line-height: 1.1; }
.age-step__body h4 { font-size: 1.12rem; margin-bottom: 4px; }
.age-step__body p { color: var(--slate-500); font-size: 14.5px; }
.curve {
  position: relative; background: linear-gradient(180deg, var(--accent-50), #fff);
  border: 1px solid var(--accent-100); border-radius: var(--radius-lg); padding: 34px 30px;
  box-shadow: var(--shadow-sm);
}
.curve h4 { font-size: 1.05rem; color: var(--slate-700); margin-bottom: 8px; }
.curve svg { width: 100%; height: auto; }
.curve__note { margin-top: 14px; font-size: 13.5px; color: var(--slate-500); }

/* ---------- Tech pillars ---------- */
.card__img { width: 100%; height: 200px; margin-bottom: 16px; object-fit: cover; border-radius: var(--radius-lg); background-size: cover; background-position: center; }
.pillar { position: relative; overflow: hidden; }
.pillar__num { position: relative; right: 0; float: right; font-family: var(--font-display); font-weight: 800; font-size: 4rem; color: var(--slate-100); line-height: 1; }
.compare { display: flex; flex-direction: column; gap: 10px; margin-top: 18px; }
.compare__row { display: flex; align-items: center; gap: 12px; font-size: 14px; }
.compare__tag { font-size: 11.5px; font-weight: 800; padding: 4px 10px; border-radius: 999px; letter-spacing: .04em; flex: none; }
.compare__tag--bad { background: var(--slate-100); color: var(--slate-500); }
.compare__tag--good { background: var(--accent-50); color: var(--accent-700); }

/* ---------- Benefits ---------- */
.benefit { display: flex; gap: 16px; align-items: center; padding: 26px; background: #fff; border: 1px solid var(--slate-200); border-radius: var(--radius); transition: .4s var(--ease); }
.benefit:hover { border-color: var(--accent-200, var(--accent-100)); box-shadow: var(--shadow-sm); transform: translateY(-4px); }
.benefit__check { width: 40px; height: 40px; flex: none; border-radius: 12px; background: var(--accent-grad); color: #fff; display: grid; place-items: center; }
.benefit__check svg { width: 24px; height: 24px; }
.benefit h4 { font-size: 1.08rem; --margin-bottom: 4px; }
.benefit p { color: var(--slate-500); font-size: 14px; }

/* ---------- Timeline ---------- */
.timeline { position: relative; max-width: 880px; margin: 0 auto; padding-left: 6px; }
.timeline::before { content: ""; position: absolute; left: 26px; top: 8px; bottom: 8px; width: 3px; background: linear-gradient(var(--accent-400), var(--accent-100)); border-radius: 3px; }
.tl-item { position: relative; padding: 0 0 38px 78px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-dot { position: absolute; left: 6px; top: 2px; width: 32px; height: 32px; border-radius: 50%; background: #fff; border: 3px solid var(--accent-500); display: grid; place-items: center; font-weight: 800; color: var(--accent-700); font-size: 13px; box-shadow: 0 6px 16px var(--accent-shadow); }
.tl-item h4 { font-size: 1.2rem; margin-bottom: 6px; }
.tl-item .when { font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--accent-600); margin-bottom: 4px; }
.tl-item p { color: var(--slate-500); font-size: 15px; }

/* timeline + carousel two-column layout */
.timeline-layout { display: grid; grid-template-columns: 1.02fr 0.98fr; gap: 56px; align-items: center; }
.timeline-layout .timeline { max-width: none; margin: 0; }

.tl-carousel { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); background: linear-gradient(160deg, #0b1220, #14283c); aspect-ratio: 1 / 0.92; }
.tl-carousel__track { display: flex; height: 100%; transition: transform .6s var(--ease); }
.tl-slide { position: relative; min-width: 100%; height: 100%; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 22px; text-align: center; padding: 48px 40px 72px; color: #fff; }
.tl-slide::after { content: ""; position: absolute; inset: 0; background: radial-gradient(120% 80% at 50% 8%, rgba(255,255,255,.08), transparent 60%); pointer-events: none; }
.tl-slide img { position: relative; z-index: 1; width: 88%; max-height: 56%; object-fit: contain; filter: drop-shadow(0 24px 44px rgba(0,0,0,.45)); }
.tl-slide--img { padding: 0; }
.tl-slide--img img { position: absolute; inset: 0; z-index: 0; width: 100%; height: 100%; max-height: none; object-fit: cover; filter: none; }
.tl-slide--img::after { display: none; }
.tl-slide__stat { position: relative; z-index: 1; font-family: var(--font-display); font-weight: 800; font-size: clamp(3.6rem, 8vw, 5.6rem); line-height: 1; background: var(--accent-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.tl-slide__stat small { font-size: 1.6rem; -webkit-text-fill-color: var(--accent-400); }
.tl-slide__cap { position: relative; z-index: 1; }
.tl-slide__cap b { display: block; font-family: var(--font-display); font-size: 1.12rem; font-weight: 800; }
.tl-slide__cap span { font-size: 13.5px; color: #9fb3c8; }

.tl-carousel__arrow { position: absolute; top: 50%; transform: translateY(-50%); z-index: 4; width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; color: #fff; background: rgba(255,255,255,.12); backdrop-filter: blur(6px); border: 1px solid rgba(255,255,255,.18); transition: background .25s, transform .25s; }
.tl-carousel__arrow:hover { background: rgba(255,255,255,.24); }
.tl-carousel__arrow svg { width: 20px; height: 20px; }
.tl-carousel__arrow--prev { left: 14px; } .tl-carousel__arrow--next { right: 14px; }
.tl-carousel__dots { position: absolute; bottom: 22px; left: 0; right: 0; z-index: 4; display: flex; gap: 8px; justify-content: center; }
.tl-dot-btn { width: 8px; height: 8px; border-radius: 999px; background: rgba(255,255,255,.32); transition: width .3s var(--ease), background .3s; }
.tl-dot-btn.active { width: 24px; background: var(--accent-500); }

/* ---------- Top hero carousel (首屏轮播图 — independent of .tl-carousel) ---------- */
.top-carousel { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); background: linear-gradient(160deg, #0b1220, #14283c); aspect-ratio: 16 / 9; }
.top-carousel__track { display: flex; height: 100%; transition: transform .6s var(--ease); }
.top-slide { position: relative; min-width: 100%; height: 100%; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; color: #fff; }
.top-slide img { position: absolute; inset: 0; z-index: 0; width: 100%; height: 100%; object-fit: cover; }
.top-slide::after { content: ""; position: absolute; inset: 0; z-index: 1; background: linear-gradient(180deg, rgba(6,12,22,.15) 0%, rgba(6,12,22,.35) 45%, rgba(6,12,22,.72) 100%); pointer-events: none; }
.top-slide__overlay { position: relative; z-index: 2; display: flex; flex-direction: column; align-items: center; gap: 14px; padding: 0 6%; text-shadow: 0 2px 18px rgba(0,0,0,.45); }
.top-slide__eyebrow { font-family: var(--font-display); font-weight: 700; letter-spacing: .02em; font-size: 3.2rem; margin: 0; line-height: 1; }
.top-slide__headline { font-family: var(--font-display); font-weight: 800; line-height: 1.1; font-size: 3.6rem; margin: 0; }
.top-slide__headline2 { font-family: var(--font-display); font-weight: 800; line-height: 1.3; font-size: 2.8rem; margin: 0; }
.top-slide__lead { font-weight: 400; line-height: 1.6; font-size: 1.2rem; margin: 0; color: rgba(255,255,255,.92); }
.top-carousel__arrow { position: absolute; top: 50%; transform: translateY(-50%); z-index: 4; width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; color: #fff; background: rgba(255,255,255,.12); backdrop-filter: blur(6px); border: 1px solid rgba(255,255,255,.18); transition: background .25s, transform .25s; }
.top-carousel__arrow:hover { background: rgba(255,255,255,.24); }
.top-carousel__arrow svg { width: 20px; height: 20px; }
.top-carousel__arrow--prev { left: 14px; } .top-carousel__arrow--next { right: 14px; }
.top-carousel__dots { position: absolute; bottom: 22px; left: 0; right: 0; z-index: 4; display: flex; gap: 8px; justify-content: center; }
.top-dot-btn { width: 8px; height: 8px; border-radius: 999px; background: rgba(255,255,255,.32); transition: width .3s var(--ease), background .3s; }
.top-dot-btn.active { width: 24px; background: var(--accent-500); }

/* ---------- Clinical / study ---------- */
.study {
  display: grid;
  /* grid-template-columns: 1fr 1fr; */
  gap: 48px;
  align-items: center;
}
.study__visual {
  background: linear-gradient(135deg, var(--blue-900), #0c4566);
  border-radius: var(--radius-lg);
  padding: 40px;
  color: #fff;
  box-shadow: var(--shadow);

  display: flex;
  flex-direction: row;
  align-items: flex-end;
  justify-content: space-between;
}
[data-theme="female"] .study__visual { background: linear-gradient(135deg, #5c2407, #a8430c); }
.study__journal { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: .04em; background: rgba(255,255,255,.1); padding: 8px 16px; border-radius: 999px; font-size: 13px; margin-bottom: 26px; }
.study__big { font-family: var(--font-display); font-weight: 800; font-size: clamp(3rem, 7vw, 5rem); line-height: 1; }
.study__big small { font-size: 1.4rem; font-weight: 700; opacity: .8; }
.study__metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 30px; }
.study__metric { background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.12); border-radius: 16px; padding: 18px; }
.study__metric .v { font-family: var(--font-display); font-weight: 800; font-size: 1.7rem; }
.study__metric .k { font-size: 13px; color: #9fc4dd; }
[data-theme="female"] .study__metric .k { color: #f4c4a3; }
.study__list { display: flex; flex-direction: column; gap: 16px; margin-top: 10px; }
.study__list li { display: flex; gap: 14px; align-items: flex-start; }
.study__list .ic { width: 34px; height: 34px; flex: none; border-radius: 10px; background: var(--accent-50); color: var(--accent-700); display: grid; place-items: center; }
.study__list .ic svg { width: 18px; height: 18px; }
.study__list b { display: block; font-size: 1.02rem; }
.study__list span { color: var(--slate-500); font-size: 14px; }

/* ---------- Scientist / expert ---------- */
.expert { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 44px; align-items: center; }
.expert__photo { aspect-ratio: 4/5; border-radius: var(--radius-lg); background:
  linear-gradient(160deg, var(--accent-100), var(--accent-50)); position: relative; overflow: hidden;
  display: grid; place-items: center; box-shadow: var(--shadow); }
.expert__photo .mono { font-family: var(--font-display); font-weight: 800; font-size: 7rem; color: #fff; opacity: .85; }
.expert__photo .ring { position: absolute; inset: 18px; border: 1.5px dashed rgba(255,255,255,.6); border-radius: calc(var(--radius-lg) - 8px); z-index: 2; pointer-events: none; }
.expert__photo img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center top; }
.expert__photo .tag { position: absolute; z-index: 3; left: 18px; bottom: 18px; background: rgba(11,18,32,.55); color: #fff; backdrop-filter: blur(6px); padding: 8px 14px; border-radius: 999px; font-size: 16px; font-weight: 700; letter-spacing: .04em; }

/* ---------- Product showcase render ---------- */
.product-showcase {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: linear-gradient(160deg, #20150b, #2a5e9b);
  /* background: linear-gradient(120deg, rgb(196, 70, 3) 0%, #20150b 50%, #2a5e9b 100%); */
  margin-bottom: 40px;
}
/* .product-showcase::before {
    content: "";
    position: absolute;
    right: -60px;
    bottom: -60px;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--accent-500), transparent 70%);
    opacity: .35;
} */
.product-showcase img { width: 100%; display: block; }
.product-showcase__cap { position: absolute; left: 28px; bottom: 24px; color: #fff; }
.product-showcase__cap b { display: block; font-family: var(--font-display); font-size: 1.2rem; font-weight: 800; }
.product-showcase__cap span { font-size: 13px; color: #aebccd; }
@media (max-width: 760px) { .product-showcase__cap { display: none; } }

/* ---------- Cart page ---------- */
.cart-grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: 40px; align-items: start; }
.cart-items { display: flex; flex-direction: column; gap: 16px; }
.cart-item { display: grid; grid-template-columns: 96px 1fr auto; gap: 20px; align-items: center; padding: 18px; border: 1px solid var(--slate-200); border-radius: var(--radius); background: #fff; transition: box-shadow .3s var(--ease); }
.cart-item:hover { box-shadow: var(--shadow-sm); }
.cart-item__media { width: 96px; height: 96px; border-radius: 14px; display: grid; place-items: center; overflow: hidden; }
.cart-item__media.male { background: linear-gradient(160deg,#0a6fa8,#0a95d8 60%,#4dbdf3); }
.cart-item__media.female { background: linear-gradient(160deg,#d4530d,#f9821f 60%,#fbb06b); }
.cart-item__media img { width: 74%; filter: drop-shadow(0 8px 14px rgba(0,0,0,.25)); }
.cart-item__info h4 { font-size: 1.08rem; margin-bottom: 5px; }
.cart-item__info .variant { font-size: 13px; color: var(--slate-500); }
.cart-item__info .unit { font-size: 13px; color: var(--accent-700); font-weight: 700; margin-top: 6px; }
.cart-item__right { display: flex; flex-direction: column; align-items: flex-end; gap: 12px; }
.qty { display: inline-flex; align-items: center; border: 1.5px solid var(--slate-200); border-radius: 999px; overflow: hidden; }
.qty button { width: 32px; height: 32px; display: grid; place-items: center; color: var(--slate-700); font-size: 17px; transition: .2s; }
.qty button:hover { background: var(--accent-50); color: var(--accent-700); }
.qty span { min-width: 36px; text-align: center; font-weight: 700; font-size: 14px; }
.cart-item__price { font-family: var(--font-display); font-weight: 800; font-size: 1.15rem; }
.cart-item__remove { font-size: 12.5px; color: var(--slate-400); display: inline-flex; align-items: center; gap: 5px; transition: .2s; }
.cart-item__remove:hover { color: #e0533a; }
.cart-item__remove svg { width: 14px; height: 14px; }

.cart-summary { background: #fff; border: 1px solid var(--slate-200); border-radius: var(--radius-lg); padding: 30px; position: sticky; top: 100px; box-shadow: var(--shadow-sm); }
.cart-summary h3 { font-size: 1.3rem; margin-bottom: 20px; }
.cart-summary__row { display: flex; justify-content: space-between; padding: 9px 0; font-size: 15px; color: var(--slate-700); }
.cart-summary__row.total { border-top: 1px solid var(--slate-200); margin-top: 10px; padding-top: 18px; font-weight: 800; color: var(--ink); align-items: baseline; }
.cart-summary__row.total b { font-family: var(--font-display); font-size: 1.6rem; color: var(--accent-700); }
.cart-summary .btn { margin-top: 22px; }
.cart-summary__note { display: flex; gap: 8px; align-items: flex-start; margin-top: 16px; font-size: 12.5px; color: var(--slate-500); line-height: 1.6; }
.cart-summary__note svg { width: 16px; height: 16px; color: var(--accent-600); flex: none; margin-top: 1px; }
.promo { display: flex; gap: 10px; margin: 4px 0 6px; }
.promo input { flex: 1; min-width: 0; border: 1.5px solid var(--slate-200); border-radius: 999px; padding: 11px 18px; font-family: inherit; font-size: 14px; outline: none; transition: .2s; }
.promo input:focus { border-color: var(--accent-400); }
.promo button { padding: 11px 18px; border-radius: 999px; font-weight: 700; font-size: 14px; color: var(--accent-700); background: var(--accent-50); transition: .2s; }
.promo button:hover { background: var(--accent-100); }

.cart-empty { text-align: center; padding: 50px 20px; border: 1px dashed var(--slate-200); border-radius: var(--radius-lg); }
.cart-empty__icon { width: 88px; height: 88px; border-radius: 50%; background: var(--accent-50); color: var(--accent-600); display: grid; place-items: center; margin: 0 auto 22px; }
.cart-empty__icon svg { width: 40px; height: 40px; }
.cart-empty h3 { font-size: 1.4rem; margin-bottom: 8px; }
.cart-empty p { color: var(--slate-500); margin-bottom: 24px; }

/* ---------- Account / member center ---------- */
.acct-profile { display: grid; grid-template-columns: auto 1fr auto; gap: 30px; align-items: center; background: var(--accent-grad); color: #fff; border-radius: var(--radius-xl); padding: 42px 46px; box-shadow: 0 30px 70px var(--accent-shadow); position: relative; overflow: hidden; }
.acct-profile::before { content: ""; position: absolute; left: -60px; bottom: -90px; width: 260px; height: 260px; border-radius: 50%; background: rgba(255,255,255,.14); }
.acct-profile::after { content: ""; position: absolute; right: -70px; top: -90px; width: 300px; height: 300px; border-radius: 50%; background: radial-gradient(circle, rgba(255,255,255,.55), transparent 68%); opacity: .6; }
.acct-avatar { position: relative; z-index: 1; width: 100px; height: 100px; border-radius: 50%; display: grid; place-items: center; font-family: var(--font-display); font-weight: 800; font-size: 2.3rem; color: var(--accent-700); background: #fff; box-shadow: 0 12px 30px rgba(11,30,55,.22); border: 4px solid rgba(255,255,255,.5); overflow: hidden; }
.acct-avatar img { width: 100%; height: 100%; object-fit: cover; }
.acct-id { position: relative; z-index: 1; }
.acct-id h1 { font-size: 1.7rem; color: #fff; margin-bottom: 10px; }
.acct-id h1 span { color: rgba(255,255,255,.82) !important; }
.acct-tier { display: inline-flex; align-items: center; gap: 7px; padding: 6px 14px; border-radius: 999px; font-size: 13px; font-weight: 800; letter-spacing: .03em; background: #fff; color: var(--accent-700); box-shadow: 0 6px 16px rgba(11,30,55,.18); }
.acct-tier svg { width: 15px; height: 15px; }
.acct-id .sub { color: rgba(255,255,255,.9); font-size: 14px; margin-top: 12px; }
.acct-pts { position: relative; z-index: 1; text-align: right; }
.acct-pts .v { font-family: var(--font-display); font-weight: 800; font-size: 2.4rem; line-height: 1; color: #fff; text-shadow: 0 2px 12px rgba(11,30,55,.18); }
.acct-pts .k { font-size: 13px; color: rgba(255,255,255,.9); margin-top: 4px; }
.tier-bar { grid-column: 1 / -1; position: relative; z-index: 1; margin-top: 6px; }
.tier-bar__track { height: 9px; border-radius: 999px; background: rgba(255,255,255,.28); overflow: hidden; }
.tier-bar__fill { height: 100%; border-radius: 999px; background: #fff; box-shadow: 0 0 14px rgba(255,255,255,.5); }
.tier-bar__meta { display: flex; justify-content: space-between; font-size: 12.5px; color: rgba(255,255,255,.9); margin-top: 9px; }
.tier-bar__meta b { color: #fff; }

.acct-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.acct-stat { background: #fff; border: 1px solid var(--slate-200); border-radius: var(--radius); padding: 24px; transition: .3s var(--ease); }
.acct-stat:hover { box-shadow: var(--shadow-sm); transform: translateY(-3px); }
.acct-stat .ic { width: 42px; height: 42px; border-radius: 12px; background: var(--accent-50); color: var(--accent-700); display: grid; place-items: center; margin-bottom: 16px; }
.acct-stat .ic svg { width: 21px; height: 21px; }
.acct-stat .v { font-family: var(--font-display); font-weight: 800; font-size: 1.85rem; color: var(--ink); line-height: 1; }
.acct-stat .k { font-size: 13.5px; color: var(--slate-500); margin-top: 6px; }

.acct-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.acct-link { display: flex; align-items: center; gap: 14px; padding: 20px 22px; border: 1px solid var(--slate-200); border-radius: var(--radius); background: #fff; transition: .3s var(--ease); }
.acct-link:hover { border-color: var(--accent-100); box-shadow: var(--shadow-sm); transform: translateY(-3px); }
.acct-link:hover b { color: var(--accent-700); }
.acct-link .ic { width: 44px; height: 44px; border-radius: 12px; background: var(--accent-50); color: var(--accent-700); display: grid; place-items: center; flex: none; }
.acct-link .ic svg { width: 22px; height: 22px; }
.acct-link b { display: block; font-size: 1rem; transition: color .25s; }
.acct-link span { font-size: 12.5px; color: var(--slate-500); }
.acct-link .arr { margin-left: auto; color: var(--slate-400); flex: none; }

.newuser-band { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; justify-content: space-between; background: var(--accent-grad); color: #fff; border-radius: var(--radius-lg); padding: 24px 30px; box-shadow: var(--shadow); }
.newuser-band__txt { display: flex; align-items: center; gap: 14px; }
.newuser-band__txt .ic { width: 44px; height: 44px; border-radius: 12px; background: rgba(255,255,255,.18); display: grid; place-items: center; flex: none; }
.newuser-band__txt .ic svg { width: 22px; height: 22px; }
.newuser-band b { font-size: 1.1rem; display: block; }
.newuser-band span { opacity: .9; font-size: 14px; }

.sub-card { position: relative; border: 1.5px solid var(--slate-200); border-radius: var(--radius-lg); padding: 30px 28px; background: #fff; transition: .35s var(--ease); }
.sub-card:hover { border-color: var(--accent-400); transform: translateY(-5px); box-shadow: var(--shadow); }
.sub-card.featured { border-color: var(--accent-600); box-shadow: 0 0 0 3px var(--accent-100); }
.sub-card__tag { position: absolute; top: -12px; left: 24px; background: var(--accent-grad); color: #fff; font-size: 11px; font-weight: 800; padding: 4px 12px; border-radius: 999px; letter-spacing: .04em; }
.sub-card h4 { font-size: 1.2rem; margin-bottom: 10px; }
.sub-card .disc { display: inline-block; font-size: 13px; font-weight: 800; color: var(--accent-700); background: var(--accent-50); padding: 4px 12px; border-radius: 999px; margin-bottom: 16px; }
.sub-card .price { font-family: var(--font-display); font-weight: 800; font-size: 2rem; color: var(--ink); line-height: 1; }
.sub-card .price small { font-size: .95rem; color: var(--slate-500); font-weight: 600; }
.sub-card .per { font-size: 13px; color: var(--slate-500); margin: 6px 0 20px; }

.perk-list { display: grid; gap: 12px; }
.perk-list li { display: flex; gap: 12px; align-items: flex-start; color: var(--slate-700); font-size: 15px; }
.perk-list svg { width: 20px; height: 20px; color: var(--accent-600); flex: none; margin-top: 2px; }

.tier-table { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--slate-200); border-radius: var(--radius); overflow: hidden; }
.tier-table th, .tier-table td { padding: 16px 22px; text-align: left; font-size: 15px; border-bottom: 1px solid var(--slate-200); }
.tier-table th { background: var(--slate-100); font-weight: 700; font-size: 12.5px; letter-spacing: .05em; color: var(--slate-700); text-transform: uppercase; }
.tier-table tr:last-child td { border-bottom: none; }
.tier-table tr.is-current { background: var(--accent-50); }
.tier-table tr.is-current td:first-child { font-weight: 800; color: var(--accent-700); }
.tier-table .now-tag { font-size: 11px; font-weight: 800; color: #fff; background: var(--accent-grad); padding: 2px 9px; border-radius: 999px; margin-left: 8px; }

.referral { background: linear-gradient(145deg, #fb9d4d 0%, #f9821f 46%, #ef6a16 100%); color: #fff; border-radius: var(--radius-xl); padding: 44px; position: relative; overflow: hidden; box-shadow: 0 30px 70px rgba(242,106,27,.30); }
.referral::before { content: ""; position: absolute; right: -60px; bottom: -70px; width: 300px; height: 300px; border-radius: 50%; background: radial-gradient(circle, rgba(255,255,255,.5), transparent 68%); opacity: .55; }
.referral::after { content: ""; position: absolute; left: -50px; top: -80px; width: 240px; height: 240px; border-radius: 50%; background: rgba(255,255,255,.14); }
.referral__grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.referral .eyebrow { background: rgba(255,255,255,.18); border-color: rgba(255,255,255,.32); color: #fff; }
.referral .lead { color: rgba(255,255,255,.92); }
.referral .btn--light { color: var(--orange-700); }
.referral__code { display: flex; gap: 10px; margin-top: 22px; }
.referral__code input { flex: 1; min-width: 0; background: rgba(255,255,255,.16); border: 1px solid rgba(255,255,255,.32); border-radius: 999px; padding: 13px 20px; color: #fff; font-family: var(--font-display); font-weight: 700; letter-spacing: .1em; font-size: 15px; }
.referral__code input::placeholder { color: rgba(255,255,255,.7); }
.referral__rewards { display: grid; gap: 14px; }
.referral__reward { display: flex; gap: 14px; align-items: flex-start; background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.22); border-radius: 16px; padding: 18px 20px; }
.referral__reward .ic { width: 42px; height: 42px; flex: none; border-radius: 12px; background: #fff; display: grid; place-items: center; }
.referral__reward .ic svg { width: 21px; height: 21px; color: var(--orange-600); }
.referral__reward b { display: block; font-size: 1.02rem; } .referral__reward span { color: rgba(255,255,255,.88); font-size: 13.5px; }

@media (max-width: 860px) {
  .acct-profile { grid-template-columns: auto 1fr; padding: 32px 26px; }
  .acct-pts { grid-column: 1 / -1; text-align: left; }
  .acct-stats { grid-template-columns: repeat(2, 1fr); }
  .acct-links { grid-template-columns: 1fr; }
  .referral__grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) { .acct-stats { grid-template-columns: 1fr; } .acct-avatar { width: 76px; height: 76px; font-size: 1.8rem; } }

@media (max-width: 980px) { .cart-grid { grid-template-columns: 1fr; } .cart-summary { position: static; } }
@media (max-width: 600px) {
  .cart-item { grid-template-columns: 72px 1fr; }
  .cart-item__media { width: 72px; height: 72px; }
  .cart-item__right { grid-column: 1 / -1; flex-direction: row; justify-content: space-between; align-items: center; }
}

.expert blockquote { font-family: var(--font-display); font-size: clamp(1.3rem, 2.4vw, 1.9rem); font-weight: 700; line-height: 1.35; letter-spacing: -.01em; margin: 18px 0 24px; }
.expert .role { color: var(--accent-700); font-weight: 700; }
.expert__creds { display: flex; flex-direction: column; gap: 10px; margin-top: 20px; }
.expert__creds li { display: flex; gap: 10px; align-items: center; color: var(--slate-700); font-size: 15px; }
.expert__creds svg { width: 18px; height: 18px; color: var(--accent-600); flex: none; }

/* ---------- Testimonials ---------- */
.testi { background: #fff; border: 1px solid var(--slate-200); border-radius: var(--radius-lg); padding: 30px; display: flex; flex-direction: column; gap: 18px; transition: .4s var(--ease); }
.testi:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.testi__stars { color: var(--accent-500); letter-spacing: 3px; }
.testi__quote { font-size: 1.02rem; color: var(--ink-soft); line-height: 1.7; }
.testi__info { font-size: 12px; color: var(--slate-500); line-height: 1.7; }
.testi__person { display: flex; align-items: center; gap: 12px; margin-top: auto; /* 最后一个子项居底部对齐 */ }
.testi__avatar { width: 46px; height: 46px; border-radius: 50%; background: var(--accent-grad); color: #fff; display: grid; place-items: center; font-weight: 800; font-family: var(--font-display); }
.testi__person b { font-size: 15px; } .testi__person span { font-size: 13px; color: var(--slate-500); }
.report-compare { display: flex; gap: 18px; align-items: center; padding: 16px; background: var(--paper); border-radius: 14px; }
.report-compare div { text-align: center; flex: 1; }
.report-compare .age { font-family: var(--font-display); font-weight: 800; font-size: 1.8rem; }
.report-compare .before .age { color: var(--slate-400); }
.report-compare .after .age { color: var(--accent-700); }
.report-compare small { font-size: 12px; color: var(--slate-500); text-transform: uppercase; letter-spacing: .08em; }
.report-compare .arrow { flex: none; color: var(--accent-600); }

/* ---------- FAQ ---------- */
.faq-tabs { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-bottom: 40px; }
.faq-tab { padding: 10px 22px; border-radius: 999px; font-weight: 700; font-size: 14px; color: var(--slate-500); background: var(--white); border: 1px solid var(--slate-200); transition: .3s; }
.faq-tab.active { color: #fff; background: var(--accent-grad); border-color: transparent; }
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-group { display: none; }
.faq-group.active { display: block; }
.faq-item { border-bottom: 1px solid var(--slate-200); }
.faq-q { display: flex; align-items: center; justify-content: space-between; gap: 20px; width: 100%; text-align: left; padding: 24px 4px; font-weight: 700; font-size: 1.08rem; color: var(--ink); }
.faq-q .pm { width: 30px; height: 30px; flex: none; border-radius: 50%; border: 1.5px solid var(--slate-200); display: grid; place-items: center; transition: .3s; position: relative; }
.faq-q .pm::before, .faq-q .pm::after { content: ""; position: absolute; background: var(--accent-700); border-radius: 2px; }
.faq-q .pm::before { width: 12px; height: 2px; } .faq-q .pm::after { width: 2px; height: 12px; transition: .3s; }
.faq-item.open .faq-q .pm { background: var(--accent-50); border-color: var(--accent-100); }
.faq-item.open .faq-q .pm::after { transform: rotate(90deg); opacity: 0; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .45s var(--ease); }
.faq-a p { padding: 0 4px 24px; color: var(--slate-500); font-size: 15px; max-width: 92%; }

/* ---------- Products ---------- */
.product-card {
  border-radius: var(--radius-xl); overflow: hidden; position: relative; color: #fff;
  display: flex; flex-direction: column; box-shadow: var(--shadow); transition: transform .45s var(--ease);
}
.product-card:hover { transform: translateY(-8px); }
.product-card--male { background: linear-gradient(160deg, #0a6fa8, #0a95d8 60%, #4dbdf3); }
.product-card--female { background: linear-gradient(160deg, #d4530d, #f9821f 60%, #fbb06b); }
.product-card__media { position: relative; padding: 0px; display: grid; place-items: center; margin-top: 30px; }
.product-card__media img { width: 70%; filter: drop-shadow(0 26px 40px rgba(0,0,0,.3)); transition: transform .5s var(--ease); }
.product-card:hover .product-card__media img { transform: translateY(-8px) scale(1.03); }
.product-card__tag { position: absolute; top: 24px; left: 24px; background: rgba(255,255,255,.18); border: 1px solid rgba(255,255,255,.3); padding: 7px 14px; border-radius: 999px; font-size: 12.5px; font-weight: 700; letter-spacing: .04em; }
.product-card__body { padding: 30px 40px 40px; padding-top: 0; }
.product-card__body h3 { font-size: 1.7rem; margin-bottom: 6px; }
.product-card__spec { font-size: 14px; opacity: .9; margin-bottom: 16px; }
.product-card__sell { font-size: 15px; opacity: .95; margin-bottom: 24px; }
.product-card .btn--light { color: var(--ink); }

/* Product detail */
.pdetail { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.pdetail__media { position: sticky; top: 110px; border-radius: var(--radius-lg); padding: 0px; display: grid; place-items: center; background: var(--accent-grad); box-shadow: var(--shadow); }
.pdetail__media img { width: 70%; filter: drop-shadow(0 30px 50px rgba(0,0,0,.3)); }
.pdetail__thumbs { display: flex; gap: 12px; margin-top: 24px; }
.pdetail__thumb { width: 70px; height: 70px; border-radius: 14px; background: var(--accent-50); border: 1.5px solid var(--accent-100); display: grid; place-items: center; color: var(--accent-700); }
.price-options { display: grid; gap: 14px; margin: 26px 0; }
.price-opt { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 22px; border: 1.5px solid var(--slate-200); border-radius: var(--radius); cursor: pointer; transition: .3s; position: relative; }
.price-opt:hover { border-color: var(--accent-400); }
.price-opt.selected { border-color: var(--accent-600); background: var(--accent-50); box-shadow: 0 0 0 3px var(--accent-100); }
.price-opt__left b { font-size: 1.05rem; } .price-opt__left span { font-size: 13px; color: var(--slate-500); display: block; }
.price-opt__right { text-align: right; }
.price-opt__right .now { font-family: var(--font-display); font-weight: 800; font-size: 1.4rem; color: var(--accent-700); }
.price-opt__right .was { font-size: 13px; color: var(--slate-400); text-decoration: line-through; }
.price-opt__best { position: absolute; top: -11px; right: 18px; background: var(--accent-grad); color: #fff; font-size: 11px; font-weight: 800; padding: 4px 12px; border-radius: 999px; letter-spacing: .04em; }

.tabbar { display: flex; gap: 8px; border-bottom: 1px solid var(--slate-200); margin-bottom: 26px; flex-wrap: wrap; }
.tabbar button { padding: 14px 8px; font-weight: 700; color: var(--slate-500); border-bottom: 2.5px solid transparent; margin-bottom: -1px; transition: .25s; }
.tabbar button.active { color: var(--accent-700); border-color: var(--accent-600); }
.tabpane { display: none; } .tabpane.active { display: block; animation: fade .4s var(--ease); }
.spec-table { width: 100%; border-collapse: collapse; }
.spec-table td { padding: 14px 4px; border-bottom: 1px solid var(--slate-200); font-size: 15px; }
.spec-table td:first-child { color: var(--slate-500); width: 45%; }
.spec-table td:last-child { font-weight: 600; }
.guide-list li, .note-list li { display: flex; gap: 12px; padding: 10px 0; color: var(--slate-700); font-size: 15px; }
.guide-list svg, .note-list svg { width: 20px; height: 20px; color: var(--accent-600); flex: none; margin-top: 2px; }

/* ---------- CTA band ---------- */
.cta-band { position: relative; overflow: hidden; border-radius: var(--radius-xl); padding: 70px 56px; background: var(--accent-grad); color: #fff; box-shadow: var(--shadow-lg); }
.cta-band::after { content: ""; position: absolute; right: -80px; top: -80px; width: 360px; height: 360px; border-radius: 50%; background: rgba(255,255,255,.12); }
.cta-band__inner { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.cta-band h2 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); font-weight: 800; max-width: 620px; }
.cta-band p { opacity: .92; margin-top: 10px; max-width: 560px; }

/* ---------- Membership ---------- */
.member { background: linear-gradient(160deg, #0b1220, #122438); color: #fff; border-radius: var(--radius-xl); padding: 56px; position: relative; overflow: hidden; }
.member::before { content: ""; position: absolute; right: -60px; bottom: -60px; width: 320px; height: 320px; border-radius: 50%; background: radial-gradient(circle, var(--accent-500), transparent 70%); opacity: .35; }
.member__grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.member__perks { display: grid; gap: 16px; }
.member__perk { display: flex; gap: 14px; align-items: flex-start; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1); border-radius: 16px; padding: 18px 20px; }
.member__perk .ic { width: 40px; height: 40px; flex: none; border-radius: 12px; background: var(--accent-grad); display: grid; place-items: center; }
.member__perk .ic svg { width: 20px; height: 20px; color: #fff; }
.member__perk b { display: block; font-size: 1.02rem; } .member__perk span { color: #9fb3c8; font-size: 14px; }
.member__tier { display: inline-flex; gap: 8px; align-items: center; background: rgba(255,255,255,.08); padding: 8px 16px; border-radius: 999px; font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }

/* ---------- Quiz ---------- */
.quiz { background: #fff; border: 1px solid var(--slate-200); border-radius: var(--radius-xl); box-shadow: var(--shadow); padding: 46px; max-width: 760px; margin: 0 auto; }
.quiz__progress { height: 6px; background: var(--slate-100); border-radius: 999px; overflow: hidden; margin-bottom: 30px; }
.quiz__progress span { display: block; height: 100%; width: 0; background: var(--accent-grad); border-radius: 999px; transition: width .5s var(--ease); }
.quiz__step { display: none; } .quiz__step.active { display: block; animation: fade .4s var(--ease); }
.quiz__q { font-family: var(--font-display); font-size: 1.5rem; font-weight: 800; margin-bottom: 8px; }
.quiz__opts { display: grid; gap: 12px; margin: 24px 0; }
.quiz__opt { padding: 18px 22px; border: 1.5px solid var(--slate-200); border-radius: var(--radius); text-align: left; font-weight: 600; font-size: 15px; color: var(--slate-700); transition: .25s; }
.quiz__opt:hover { border-color: var(--accent-400); }
.quiz__opt.selected { border-color: var(--accent-600); background: var(--accent-50); color: var(--accent-700); }
.quiz__nav { display: flex; justify-content: space-between; gap: 14px; }
.quiz__result { text-align: center; }
.quiz__age-ring { width: 180px; height: 180px; margin: 0 auto 20px; position: relative; display: grid; place-items: center; }
.quiz__age-ring svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.quiz__age-ring .n { position: relative; z-index: 1; font-family: var(--font-display); font-weight: 800; font-size: 3.4rem; line-height: 1; color: var(--accent-700); transform: translateY(-8px); }
.quiz__age-ring small { position: absolute; z-index: 1; left: 50%; bottom: 46px; transform: translateX(-50%); white-space: nowrap; font-size: 12px; color: var(--slate-500); text-transform: uppercase; letter-spacing: .1em; }

/* ---------- About / timeline history ---------- */
.history { display: grid; gap: 0; }
.hrow { display: grid; grid-template-columns: 120px 1fr; gap: 28px; padding: 26px 0; border-bottom: 1px solid var(--slate-200); }
.hrow .yr { font-family: var(--font-display); font-weight: 800; font-size: 1.5rem; color: var(--accent-700); }
.hrow h4 { font-size: 1.15rem; margin-bottom: 4px; } .hrow p { color: var(--slate-500); font-size: 15px; }
.mission-card { background: var(--accent-grad); color: #fff; border-radius: var(--radius-lg); padding: 44px; box-shadow: var(--shadow); }
.mission-card p { font-size: 1.1rem; line-height: 1.9; opacity: .96; }

/* ---------- About · Mission & Vision (stacked rows) ---------- */
.ethos { display: flex; flex-direction: column; gap: 28px; }
.ethos-row {
  display: grid; grid-template-columns: 0.82fr 1.18fr; gap: 50px; align-items: center;
  border-radius: var(--radius-xl); padding: 54px 56px; position: relative; overflow: hidden;
}
.ethos.about {
  .ethos-row {
    box-shadow: var(--shadow-sm);
    transition: transform .3s var(--ease), box-shadow .3s var(--ease);
  }
  .ethos-row:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow);
    /* box-shadow: var(--shadow-lg); */
  }
}
.ethos-row__head { position: relative; z-index: 1; }
.ethos-row__head .eyebrow { margin-bottom: 16px; }
.ethos-row__head .h-section { margin: 0; }
.ethos-row__body { position: relative; z-index: 1; }
.ethos-num {
  display: block; font-family: var(--font-display); font-weight: 800; font-size: 1.05rem;
  letter-spacing: .18em; opacity: .55; margin-bottom: 14px;
}
.ethos-lead { font-size: 1.15rem; margin-top: 16px; opacity: .96; max-width: 360px; }

/* Vision — featured gradient row */
.ethos-row--vision { background: var(--accent-grad); color: #fff; box-shadow: var(--shadow-lg); }
.ethos-row--vision .eyebrow { background: rgba(255,255,255,.16); border-color: rgba(255,255,255,.30); color: #fff; }
.ethos-row--vision::after {
  content: ""; position: absolute; right: -80px; top: -90px; width: 300px; height: 300px;
  border-radius: 50%; background: rgba(255,255,255,.12);
}
.ethos-quote {
  font-family: var(--font-display); font-weight: 400; letter-spacing: -.01em; line-height: 1.5;
  font-size: 1.5rem;
}
.ethos-quote__hl {
  background: rgba(255,255,255,.20); border-radius: 8px; padding: 2px 12px;
  -webkit-box-decoration-break: clone; box-decoration-break: clone;
}

/* Mission — clean card row (blue) */
/*
.ethos-row--mission { background: var(--accent-grad); color: #fff; box-shadow: var(--shadow-lg); }
.ethos-row--mission .eyebrow { background: rgba(255,255,255,.16); border-color: rgba(255,255,255,.30); color: #fff; }
.ethos-row--mission::after {
  content: ""; position: absolute; right: -80px; top: -90px; width: 300px; height: 300px;
  border-radius: 50%; background: rgba(255,255,255,.12);
}
.ethos-row--mission .ethos-num { opacity: 1; }
.ethos-row--mission .ethos-row__body p { font-size: 1.5rem; line-height: 1.5; }
.ethos-row--mission .ethos-row__body p + p { margin-top: 16px; }
*/

/* Mission — clean card row */
.ethos-row--mission { background: #fff; border: 1px solid var(--slate-200); box-shadow: var(--shadow-sm); }
.ethos-row--mission .ethos-num { color: var(--accent-600); opacity: 1; }
.ethos-row--mission .ethos-row__body p { color: var(--slate-700); font-size: 1.5rem; line-height: 1.5; }
/* .ethos-row--mission .ethos-row__body p + p { margin-top: 16px; } */

/* Philosophy */
.ethos-row--philosophy { background: var(--accent-grad); color: #fff; box-shadow: var(--shadow-lg); }
.ethos-row--philosophy .eyebrow { background: rgba(255,255,255,.16); border-color: rgba(255,255,255,.30); color: #fff; }
.ethos-row--philosophy::after {
  content: ""; position: absolute; right: -80px; top: -90px; width: 300px; height: 300px;
  border-radius: 50%; background: rgba(255,255,255,.12);
}
.ethos-row--philosophy .ethos-num { opacity: 1; }
.ethos-row--philosophy .ethos-row__body p { font-size: 1.05rem; line-height: 1.9; }
.ethos-row--philosophy .ethos-row__body p + p { margin-top: 16px; }

@media (max-width: 860px) {
  .ethos-row { grid-template-columns: 1fr; gap: 26px; padding: 40px 30px; }
  .ethos-lead { max-width: none; }
}
.values { display: grid; gap: 20px; }
.contact-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 20px; }
.contact-item { display: flex; gap: 16px; align-items: flex-start; padding: 24px; border: 1px solid var(--slate-200); border-radius: var(--radius); }
.contact-item .ic { width: 46px; height: 46px; flex: none; border-radius: 12px; background: var(--accent-50); color: var(--accent-700); display: grid; place-items: center; }
.contact-item b { display: block; font-size: 13px; color: var(--slate-500); text-transform: uppercase; letter-spacing: .06em; }
.contact-item span { font-size: 1.05rem; font-weight: 600; }

/* ---------- Page hero (sub pages) ---------- */
.page-hero { padding: 150px 0 70px; position: relative; overflow: hidden; }
.page-hero__bg { position: absolute; inset: 0; z-index: -1; background:
  radial-gradient(900px 500px at 85% -10%, var(--accent-50), transparent 60%),
  linear-gradient(180deg, #fff, var(--paper)); }
.page-hero h1 { font-size: clamp(2.4rem, 5vw, 3.6rem); font-weight: 800; margin: 18px 0 18px; }
.page-hero h2 { font-size: clamp(1.2rem, 3vw, 2.3rem); font-weight: 800; margin: 18px 0 18px; color: var(--slate-500); }
.breadcrumb { display: flex; gap: 8px; align-items: center; font-size: 14px; color: var(--slate-500); }
.breadcrumb a:hover { color: var(--accent-700); }
.page-hero-content {
  display: flex; flex-direction: row; gap: 40px;
  .page-hero-left {
    flex: 1;
  }
  .page-hero-right {
    flex: 1;
  }
}

/* ---------- Footer ---------- */
.footer { background: #0a121d; color: #aebccd; padding: 80px 0 30px; }
.footer__top { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 50px; border-bottom: 1px solid rgba(255,255,255,.08); }
.footer__brand img { height: 40px; margin-bottom: 16px; filter: brightness(0) invert(1); }
.footer__brand p { font-size: 14px; max-width: 320px; line-height: 1.8; }
.footer__top h5 { color: #fff; margin-top: 16px; }
.footer__col h5 { color: #fff; font-size: 14px; letter-spacing: .04em; margin-bottom: 18px; font-family: var(--font-display); }
.footer__col a { display: block; font-size: 14px; padding: 6px 0; transition: color .25s; }
.footer__col a:hover { color: #fff; }
.footer__social { display: flex; gap: 10px; margin-top: 8px; }
.footer__social a { width: 40px; height: 40px; border-radius: 12px; background: rgba(255,255,255,.06); display: grid; place-items: center; transition: .3s; }
.footer__social a:hover { background: var(--accent-600); color: #fff; transform: translateY(-3px); }
.footer__social svg { width: 18px; height: 18px; }
.footer__legal { padding: 28px 0 0; }
.footer__disclaimer { background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.08); border-radius: 14px; padding: 18px 22px; font-size: 13px; line-height: 1.7; margin: 30px 0; }
.footer__disclaimer b { color: #cdd8e4; }
.footer__bottom { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 13px; color: #6b7c90; }
.footer__bottom a:hover { color: #fff; }

/* ---------- Reveal animations ---------- */
[data-reveal] { opacity: 0; transform: translateY(26px); transition: opacity .4s var(--ease), transform .4s var(--ease), box-shadow .4s var(--ease); }
[data-reveal].in { opacity: 1; transform: none; }
[data-reveal][data-delay="1"] { transition-delay: .08s; }
[data-reveal][data-delay="2"] { transition-delay: .16s; }
[data-reveal][data-delay="3"] { transition-delay: .24s; }
[data-reveal][data-delay="4"] { transition-delay: .32s; }
@keyframes fade { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } [data-reveal] { opacity: 1; transform: none; } }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero__grid, .why, .study, .expert, .pdetail, .member__grid, .timeline-layout { grid-template-columns: 1fr; }
  .timeline-layout { gap: 40px; }
  .tl-carousel { max-width: 460px; margin: 0 auto; width: 100%; }
  .grid--4 { grid-template-columns: repeat(2,1fr); }
  .grid--3 { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1fr 1fr; }
  .pdetail__media { position: static; }
  .study__visual { order: -1; }
}
@media (max-width: 760px) {
  .section { padding: 80px 0; }
  .nav__menu, .nav__cta { display: none; }
  .nav__burger { display: flex; }
  .nav.open .nav__menu {
    display: flex; flex-direction: column; align-items: stretch; gap: 4px;
    position: absolute; top: 78px; left: 16px; right: 16px; background: #fff;
    padding: 16px; border-radius: 20px; box-shadow: var(--shadow);
  }
  .nav.open .nav__link { padding: 14px 16px; }
  .grid--2, .grid--4, .contact-grid, .study__metrics { grid-template-columns: 1fr; }
  .cta-band, .member { padding: 40px 26px; }
  .hero__badge { display: none; }
  .hrow { grid-template-columns: 1fr; gap: 6px; }
  .footer__top { grid-template-columns: 1fr; }
  .quiz { padding: 30px 22px; }
  .pdetail__media { padding: 34px; }
}