/* ═══════════════════════════════════════════════════════
   tubepinox304.vn — Section CSS (layout riêng của site này)
   Nạp sau main.css (base). Dùng chung tokens (--accent…).
═══════════════════════════════════════════════════════ */

.section-head { max-width: 640px; margin: 0 auto 2.75rem; text-align: center; }
.section-head p { margin-top: .65rem; }
.btn-ghost--light { color: #fff; border-color: rgba(255,255,255,.4); }
.btn-ghost--light:hover { border-color: #fff; color: #fff; background: rgba(255,255,255,.08); }

/* ── HERO ── */
.hero {
  background:
    radial-gradient(1100px 500px at 78% -10%, rgba(31,159,181,.20), transparent 60%),
    linear-gradient(180deg, #0f1c20 0%, #0b1417 100%);
  color: #fff; padding: 8.5rem 4vw 4.5rem;
}
.hero__inner { display: grid; grid-template-columns: 1.05fr .95fr; gap: 3.5rem; align-items: center; }
.hero__eyebrow { display: inline-block; font-family: var(--serif); font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--accent-light); border: 1px solid rgba(31,159,181,.4); padding: .35rem .8rem; border-radius: 100px; margin-bottom: 1.4rem; }
.hero__title { font-family: var(--serif); font-weight: 500; font-size: clamp(2.2rem, 5vw, 3.6rem); line-height: 1.12; color: #fff; }
.hero__sub { color: rgba(255,255,255,.72); margin: 1.35rem 0 2rem; max-width: 48ch; }
.hero__cta { display: flex; flex-wrap: wrap; gap: .9rem; }
.hero__stats { display: flex; gap: 2.5rem; margin-top: 2.75rem; padding-top: 1.75rem; border-top: 1px solid rgba(255,255,255,.12); }
.hero__stat b { display: block; font-family: var(--serif); font-size: 1.9rem; font-weight: 500; color: #fff; }
.hero__stat span { font-size: .82rem; color: rgba(255,255,255,.6); }
.hero__media { position: relative; }
.hero__media img { border-radius: var(--radius); box-shadow: 0 30px 60px rgba(0,0,0,.4); }
.hero__placeholder {
  aspect-ratio: 4/3; border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,.14);
  background: linear-gradient(135deg, #14262b, #0d1a1e);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 1rem;
}
.hero__badge { font-family: var(--serif); font-weight: 500; font-size: 4.5rem; color: var(--accent-light); letter-spacing: .05em; }
.hero__placeholder-note { font-size: .8rem; color: rgba(255,255,255,.4); }
@media (max-width: 860px) {
  .hero__inner { grid-template-columns: 1fr; gap: 2.25rem; }
  .hero__media { order: -1; }
  .hero__stats { gap: 1.5rem; }
}

/* ── USP ── */
.usp { background: var(--bg); }
.usp__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.usp__card { padding: 2rem 1.5rem; border: 1px solid var(--bg-3); border-radius: var(--radius); background: var(--bg); transition: transform .3s, box-shadow .3s, border-color .3s; }
.usp__card:hover { transform: translateY(-4px); box-shadow: 0 16px 36px rgba(21,122,140,.1); border-color: var(--border); }
.usp__icon { width: 48px; height: 48px; display: inline-flex; align-items: center; justify-content: center; border-radius: 50%; background: rgba(21,122,140,.1); color: var(--accent); margin-bottom: 1.1rem; }
.usp__icon svg { width: 24px; height: 24px; }
.usp__card h3 { font-size: 1.05rem; font-weight: 500; margin-bottom: .5rem; }
.usp__card p { font-size: .88rem; line-height: 1.6; }
@media (max-width: 860px) { .usp__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .usp__grid { grid-template-columns: 1fr; } }

/* ── COMPARE ── */
.compare { background: var(--bg-2); }
.compare__table { max-width: 860px; margin: 0 auto; border: 1px solid var(--bg-3); border-radius: var(--radius); overflow: hidden; background: var(--bg); }
.compare__row { display: grid; grid-template-columns: 1.2fr 1.3fr 1fr; }
.compare__row + .compare__row { border-top: 1px solid var(--bg-3); }
.compare__row span { padding: 1rem 1.1rem; font-size: .9rem; display: flex; align-items: center; }
.compare__row--head { background: var(--dark-2); color: #fff; font-weight: 500; }
.compare__row--head .is-good { color: var(--accent-light); }
.compare__crit { font-weight: 500; color: var(--text); background: var(--bg-2); }
.compare__row .is-good { color: var(--accent-dark); font-weight: 500; background: rgba(21,122,140,.05); }
@media (max-width: 640px) {
  .compare__row { grid-template-columns: 1fr; }
  .compare__row span { border-top: 1px dashed var(--bg-3); }
  .compare__row--head { display: none; }
  .compare__crit { background: var(--dark-2); color: #fff; }
}

/* ── PRICING ── */
.pricing { background: var(--bg); }
.pricing__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.75rem; align-items: start; }
.pricing__card { position: relative; padding: 2.25rem 1.75rem; border: 1px solid var(--bg-3); border-radius: var(--radius); background: var(--bg); display: flex; flex-direction: column; }
.pricing__card.is-featured { border-color: var(--accent); box-shadow: 0 20px 44px rgba(21,122,140,.16); }
.pricing__tag { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: var(--accent); color: #fff; font-size: .72rem; font-weight: 500; padding: .3rem .9rem; border-radius: 100px; white-space: nowrap; }
.pricing__name { font-size: 1.1rem; font-weight: 500; }
.pricing__price { font-family: var(--serif); font-size: 2rem; font-weight: 500; color: var(--accent-dark); margin: .5rem 0; }
.pricing__from { font-size: .8rem; color: var(--text-light); font-family: var(--sans); }
.pricing__unit { font-size: .85rem; color: var(--text-light); font-family: var(--sans); }
.pricing__desc { font-size: .85rem; min-height: 2.6em; }
.pricing__list { list-style: none; margin: 1.25rem 0; display: flex; flex-direction: column; gap: .65rem; flex: 1; }
.pricing__list li { display: flex; gap: .55rem; align-items: flex-start; font-size: .88rem; color: var(--text-mid); }
.pricing__list svg { width: 16px; height: 16px; color: var(--accent); flex-shrink: 0; margin-top: .2rem; }
.pricing__btn { width: 100%; }
@media (max-width: 860px) { .pricing__grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; } }

/* ── PROCESS ── */
.process { background: var(--bg-2); }
.process__grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1.25rem; }
.process__step { padding: 1.5rem 1.1rem; text-align: center; }
.process__num { font-family: var(--serif); font-size: 1.6rem; font-weight: 500; color: var(--accent); display: block; margin-bottom: .6rem; }
.process__step h3 { font-size: .98rem; font-weight: 500; margin-bottom: .4rem; }
.process__step p { font-size: .83rem; line-height: 1.55; }
@media (max-width: 900px) { .process__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .process__grid { grid-template-columns: 1fr; } }

/* ── REVIEWS ── */
.reviews { background: var(--bg); }
.reviews__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.reviews__card { padding: 1.75rem; border: 1px solid var(--bg-3); border-radius: var(--radius); background: var(--bg-2); }
.reviews__stars { color: #f0a500; letter-spacing: 2px; margin-bottom: .75rem; }
.reviews__card blockquote { font-size: .92rem; line-height: 1.65; color: var(--text-mid); font-style: italic; }
.reviews__card figcaption { margin-top: 1.1rem; display: flex; flex-direction: column; }
.reviews__card figcaption b { font-weight: 500; font-size: .92rem; color: var(--text); }
.reviews__card figcaption span { font-size: .8rem; color: var(--text-light); }
@media (max-width: 860px) { .reviews__grid { grid-template-columns: 1fr; } }

/* ── FAQ ── */
.faq { background: var(--bg-2); }
.faq__inner { max-width: 760px; }
.faq__list { display: flex; flex-direction: column; gap: .75rem; }
.faq__item { background: var(--bg); border: 1px solid var(--bg-3); border-radius: var(--radius); overflow: hidden; }
.faq__item summary { list-style: none; cursor: pointer; padding: 1.1rem 1.25rem; font-weight: 500; font-size: .95rem; display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.faq__item summary::-webkit-details-marker { display: none; }
.faq__plus { position: relative; width: 16px; height: 16px; flex-shrink: 0; }
.faq__plus::before, .faq__plus::after { content: ""; position: absolute; background: var(--accent); transition: transform .25s; }
.faq__plus::before { top: 7px; left: 0; width: 16px; height: 2px; }
.faq__plus::after { top: 0; left: 7px; width: 2px; height: 16px; }
.faq__item[open] .faq__plus::after { transform: rotate(90deg); opacity: 0; }
.faq__answer { padding: 0 1.25rem 1.2rem; }
.faq__answer p { font-size: .9rem; line-height: 1.65; }

/* ── LEAD phone ── */
.lead-section__phone { margin-top: 1rem; font-size: .95rem; }
.lead-section__phone a { color: var(--accent-dark); font-weight: 500; }