/* ==========================================================================
   Alpha Surge Review: stylesheet
   Sections: 1 Tokens · 2 Base · 3 Layout · 4 Components · 5 Page sections
             6 Footer · 7 Responsive
   ========================================================================== */

/* 1. Tokens ---------------------------------------------------------------- */
:root {
  --color-ink: #14161c;
  --color-ink-deep: #0b0c10;
  --color-accent: #ffe600;
  --color-gold: #e9bd32;
  --color-surface: #f1f4f7;
  --color-surface-strong: #e2e5e8;
  --color-border: #e3e7eb;
  --color-text: #23272e;
  --color-muted: #5b6370;
  --color-on-dark: #c9ced6;

  --font-heading: "Montserrat", Arial, sans-serif;
  --font-body: "Open Sans", Arial, sans-serif;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --container: 1120px;
}

/* 2. Base ------------------------------------------------------------------ */
*,
*::before,
*::after { box-sizing: border-box; }

* { margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: #fff;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { font-family: var(--font-heading); line-height: 1.25; }

img { display: block; max-width: 100%; height: auto; }

a { color: inherit; }

ul, ol { list-style: none; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 8px;
  z-index: 10;
  background: var(--color-accent);
  color: #000;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
}
.skip-link:focus { left: 8px; }

/* 3. Layout ---------------------------------------------------------------- */
.split > *,
.faq-layout > *,
.bottom-line__layout > * { min-width: 0; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

.section { padding: 60px 0; }
.section--soft { background: var(--color-surface); }
.section--dark { background: var(--color-ink); color: #fff; }
.section--flush-top { padding-top: 0; }
.text-center { text-align: center; }

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 44px;
  align-items: center;
}

.section-title {
  font-size: clamp(26px, 3.6vw, 36px);
  font-weight: 700;
  margin-bottom: 14px;
}

.lead {
  max-width: 720px;
  margin: 0 auto 6px;
  font-size: 17px;
  color: var(--color-muted);
}
.section--dark .lead { color: var(--color-on-dark); }

/* 4. Components ------------------------------------------------------------ */

/* Disclosure strip */
.disclosure-bar {
  background: var(--color-ink-deep);
  color: var(--color-on-dark);
  font-size: 12.5px;
  text-align: center;
  padding: 8px 16px;
}

/* Page banner with pointed bottom edge */
.banner {
  background: var(--color-ink);
  color: #fff;
  text-align: center;
  padding: 46px 20px 78px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 44px), 50% 100%, 0 calc(100% - 44px));
}
.banner__title {
  font-size: clamp(26px, 4.4vw, 42px);
  font-weight: 700;
}
.banner__title em {
  display: block;
  font-style: normal;
  color: var(--color-accent);
}
.banner__sub {
  margin-top: 12px;
  font-size: 15px;
  color: var(--color-on-dark);
}

/* Button */
.button {
  display: block;
  width: calc(100% - 44px);
  margin: 0 22px;
  padding: 14px 18px;
  background: var(--color-accent);
  border: 1px solid #e6cf00;
  border-radius: var(--radius-sm);
  color: #000;
  font-family: var(--font-heading);
  font-size: 17px;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s;
}
.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgb(0 0 0 / 18%);
}
.button--outline {
  display: inline-block;
  width: auto;
  margin: 0;
  padding: 10px 22px;
  background: transparent;
  border-color: var(--color-accent);
  color: var(--color-accent);
  font-size: 13px;
}
.button--outline:hover,
.button--outline:focus-visible {
  background: var(--color-accent);
  color: #000;
}

/* Package cards */
.packages { padding: 34px 0 10px; }

.package-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  align-items: stretch;
}

.package {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-bottom: 22px;
  overflow: hidden;
  text-align: center;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}
.package--featured {
  background: var(--color-surface-strong);
  border-color: var(--color-ink);
}

.package__head {
  width: 100%;
  margin-bottom: 6px;
  padding: 14px 10px 28px;
  background: var(--color-surface);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), 50% 100%, 0 calc(100% - 18px));
}
.package--featured .package__head { background: var(--color-ink); color: #fff; }
.package__name { font-size: 22px; font-weight: 700; }
.package__duration { font-size: 13.5px; color: var(--color-muted); }
.package--featured .package__duration { color: var(--color-on-dark); }

.package__image { width: 270px; max-width: 88%; margin: 6px 0 10px; }

.package__price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 8px;
  margin: 4px 0 16px;
}
.package__amount {
  font-family: var(--font-heading);
  font-size: 64px;
  font-weight: 800;
  line-height: 1;
  color: #000;
}
.package__unit { font-size: 18px; color: var(--color-muted); }

.package__guarantee { margin-top: 16px; font-size: 14px; font-weight: 600; }
.package__secure { margin: 4px 0 10px; font-size: 12.5px; color: var(--color-muted); }
.package__total { font-size: 15px; }
.package__shipping { margin-top: 4px; font-family: var(--font-heading); font-size: 13.5px; font-weight: 700; }

.price-note {
  max-width: 640px;
  margin: 18px auto 0;
  text-align: center;
  font-size: 13px;
  color: var(--color-muted);
}

/* Feature list ("Why Alpha Surge") */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 26px;
  padding: 34px 24px;
  background: #fff;
  border-radius: var(--radius-lg);
}
.feature { text-align: center; }
.feature__icon { width: 76px; height: 76px; margin: 0 auto 18px; }
.feature__title { margin-bottom: 8px; font-size: 19px; font-weight: 700; }
.feature__text { font-size: 14.5px; color: var(--color-muted); }

/* Ingredient cards */
.ingredient-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin: 30px 0 26px;
}
.ingredient {
  padding: 10px 10px 18px;
  text-align: center;
  border: 1px solid rgb(255 255 255 / 55%);
  border-radius: var(--radius-md);
}
.ingredient__image {
  width: 100%;
  margin-bottom: 14px;
  aspect-ratio: 5 / 4;
  object-fit: cover;
  background: #fff;
  border-radius: 10px;
}
.ingredient__name { margin-bottom: 6px; font-size: 16px; font-weight: 700; }
.ingredient__text { font-size: 14px; color: #d6dae0; }

/* Label viewer */
.label-viewer summary { list-style: none; cursor: pointer; }
.label-viewer summary::-webkit-details-marker { display: none; }
.label-viewer__image { width: 100%; max-width: 420px; margin: 20px auto 0; border-radius: 10px; }

.section__subheading {
  margin-top: 34px;
  font-size: clamp(24px, 3.6vw, 38px);
  font-weight: 700;
}

/* Bullet list */
.bullet-list li { position: relative; margin-bottom: 14px; padding-left: 26px; font-size: 14.5px; }
.bullet-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 13px;
  height: 13px;
  background: #33343c;
  border-radius: 50%;
}
.bullet-list strong { color: var(--color-ink); }

.split__heading { margin-bottom: 12px; font-size: clamp(24px, 3.2vw, 32px); font-weight: 700; }
.split__intro { margin-bottom: 18px; font-size: 19px; color: #2b3039; }
.fine-print { margin-top: 6px; font-size: 12.5px; color: var(--color-muted); }

.media-rounded { overflow: hidden; border-radius: var(--radius-lg); }
.media-ring {
  width: min(420px, 100%);
  margin: 0 auto;
  overflow: hidden;
  background: #000;
  border: 16px solid var(--color-gold);
  border-radius: 50%;
  aspect-ratio: 1 / 1;
}
.media-ring img { width: 100%; height: 100%; object-fit: cover; }

/* Guarantee */
.guarantee {
  position: relative;
  margin-top: 40px;
  padding: 60px 20px 56px;
  text-align: center;
  color: #fff;
  background: radial-gradient(circle at 50% 25%, #7c7f85 0%, #4a4c52 70%);
}
.guarantee__seal {
  position: absolute;
  left: 50%;
  top: -48px;
  width: 96px;
  height: 96px;
  transform: translateX(-50%);
}
.guarantee__title { font-size: clamp(26px, 3.6vw, 34px); font-weight: 700; }
.guarantee__subtitle { margin: 6px 0 14px; font-size: clamp(17px, 2.4vw, 22px); font-weight: 700; }
.guarantee__text { max-width: 820px; margin: 0 auto; font-size: 14.5px; color: #eceef1; }

/* Shipping bar */
.shipping-bar { padding: 26px 0; background: var(--color-ink); color: #fff; }
.shipping-bar__inner { display: flex; align-items: center; justify-content: center; gap: 22px; }
.shipping-bar__image { flex: none; width: 120px; height: auto; }
.shipping-bar__title { font-size: clamp(20px, 2.8vw, 28px); font-weight: 700; }
.shipping-bar__title em { font-style: normal; color: var(--color-accent); }
.shipping-bar__note { font-size: 13px; color: var(--color-on-dark); }

/* Mini icon row */
.icon-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 20px; }
.icon-row li { text-align: center; font-size: 13px; }
.icon-row__badge {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  margin: 0 auto 8px;
  color: #fff;
  background: #000;
  border-radius: 50%;
}
.icon-row__badge svg { width: 24px; height: 24px; }

/* Checklist cards */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 26px; text-align: left; }
.card { padding: 26px 24px; color: #fff; background: var(--color-ink); border-radius: 18px; }
.card__title { margin-bottom: 10px; font-size: 18px; font-weight: 700; color: var(--color-accent); }
.card__text { font-size: 14.5px; color: #e6e9ee; }

/* Comparison table */
.compare-title { margin-bottom: 14px; font-size: 26px; }
.compare { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 14px; }
.compare th,
.compare td { padding: 14px 12px; text-align: center; vertical-align: top; border-bottom: 1px solid var(--color-border); }
.compare thead th { font-family: var(--font-heading); font-size: 15px; font-weight: 600; }
.compare tbody th { width: 110px; font-family: var(--font-heading); font-size: 14px; font-weight: 700; }
.compare .is-ours { background: var(--color-surface); }
.compare thead .is-ours { border-radius: 20px 20px 0 0; }
.compare tbody tr:last-child .is-ours { border-radius: 0 0 20px 20px; }
.compare__mark {
  display: block;
  width: 26px;
  height: 26px;
  margin: 0 auto 6px;
  font-size: 14px;
  line-height: 26px;
  color: #fff;
  background: var(--color-ink);
  border-radius: 50%;
}
.compare__mark--none { color: #555; background: none; font-size: 16px; }

/* FAQ */
.faq-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; align-items: start; margin-top: 30px; }
.faq-item { margin-bottom: 14px; overflow: hidden; color: #fff; background: var(--color-ink); border-radius: 14px; }
.faq-item summary {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 22px;
  font-size: 16px;
  font-weight: 600;
  list-style: none;
  cursor: pointer;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 22px; line-height: 1; }
.faq-item[open] summary::after { content: "\2212"; }
.faq-item__answer { padding: 16px 22px; font-size: 14.5px; color: var(--color-text); background: #fff; }
.faq-layout__image { border-radius: 18px; width: 100%; object-fit: cover; }

/* Trust strip */
.trust-strip { padding: 24px 0; color: #fff; background: var(--color-ink); }
.trust-strip__list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.trust-strip__list li { display: flex; align-items: center; gap: 12px; font-size: 14px; font-weight: 600; }
.trust-strip__icon {
  display: flex;
  flex: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: #000;
  background: #fff;
  border-radius: 50%;
}
.trust-strip__icon svg { width: 24px; height: 24px; }

/* 5. Page sections --------------------------------------------------------- */
.intro { max-width: 820px; margin: 0 auto; text-align: center; }
.intro p { margin-top: 14px; font-size: 17px; }
.intro .updated { font-size: 13px; color: var(--color-muted); }

.bottom-line { padding: 60px 0; color: #fff; background: var(--color-ink-deep); }
.bottom-line__layout { display: grid; grid-template-columns: 1.3fr 1fr; gap: 30px; align-items: center; }
.bottom-line__title { margin-bottom: 14px; font-size: clamp(26px, 3.4vw, 34px); font-weight: 700; }
.bottom-line__text { margin-bottom: 22px; color: #d3d7de; }
.bottom-line .button { display: inline-block; width: auto; margin: 0; padding: 14px 30px; }
.bottom-line__image { margin: 0 auto; border-radius: var(--radius-lg); }

/* 6. Footer ---------------------------------------------------------------- */
.site-footer { padding: 44px 0 36px; font-size: 12.5px; color: #e6e9ee; background: var(--color-ink-deep); }
.site-footer__nav { display: flex; flex-wrap: wrap; gap: 6px 26px; justify-content: center; margin-bottom: 26px; font-size: 14px; }
.site-footer__nav a { color: #fff; text-decoration: none; }
.site-footer__nav a:hover { text-decoration: underline; }
.site-footer__legal { max-width: 900px; margin: 0 auto; }
.site-footer__legal p { margin-bottom: 14px; color: #d3d7de; }
.site-footer__copy { margin-top: 18px; text-align: center; color: #9aa1ac; }

/* 7. Responsive ------------------------------------------------------------ */
@media (max-width: 860px) {
  .package-list,
  .feature-grid,
  .card-grid,
  .split,
  .faq-layout,
  .bottom-line__layout { grid-template-columns: 1fr; }

  .ingredient-grid,
  .icon-row,
  .trust-strip__list { grid-template-columns: repeat(2, 1fr); }

  .split { gap: 28px; }
  .banner { padding: 36px 18px 70px; }
  .shipping-bar__inner { flex-direction: column; text-align: center; }
  .compare tbody th { width: auto; }
  .bottom-line__image { max-width: min(380px, 100%); }
}

@media (max-width: 480px) {
  .ingredient-grid { grid-template-columns: 1fr; }
  .package__amount { font-size: 56px; }
}