/* =============================================================
   至名能源 · 首页专属区块 (Homepage-only sections)
   依赖 design-system.css + site.css（外壳/资质/CTA/页脚/悬浮在 site.css）
   version 3.0 — 2026-07-08
   ============================================================= */

/* ============ Hero ============ */
.hero { position: relative; overflow: hidden; background: var(--dark-bg); color: var(--t-invert); padding: 150px 0 90px; }
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 40%, transparent 100%);
}
.hero__grid { position: relative; z-index: 2; display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.hero__eyebrow { display: inline-flex; align-items: center; gap: 10px; font-size: .8rem; font-weight: 600; letter-spacing: .04em; color: var(--t-invert); background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.14); border-radius: var(--r-pill); padding: 8px 16px 8px 12px; margin-bottom: 26px; }
.hero__eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px rgba(245,161,29,.25); }
.hero h1 { font-size: var(--fs-hero); color: #fff; line-height: 1.14; margin-bottom: 22px; font-weight: 800; }
.hero h1 .grad { background: linear-gradient(100deg, #4a90e2 10%, #f5a11d 90%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero__sub { font-size: var(--fs-lead); color: var(--t-invert-soft); max-width: 540px; margin-bottom: 36px; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 46px; }
.hero__stats { display: flex; flex-wrap: wrap; gap: 14px 40px; }
.hero__stat .num { font-family: var(--font-num); font-size: 2rem; font-weight: 800; color: #fff; line-height: 1; }
.hero__stat .num .u { font-size: 1.1rem; color: var(--accent); margin-left: 2px; }
.hero__stat .lbl { font-size: .82rem; color: var(--t-invert-faint); margin-top: 6px; }
.hero__visual { position: relative; display: flex; justify-content: center; align-items: center; }
.hero__visual::before { content: ""; position: absolute; width: 340px; height: 340px; border-radius: 50%; background: radial-gradient(circle, rgba(74,144,226,.35), transparent 65%); filter: blur(20px); z-index: 0; }
.hero__device { position: relative; z-index: 2; max-height: 460px; width: auto; filter: drop-shadow(0 30px 50px rgba(0,0,0,.5)); animation: floaty 6s ease-in-out infinite; }
@keyframes floaty { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }
.hero__pedestal { position: absolute; bottom: -6px; left: 50%; transform: translateX(-50%); width: 78%; height: 40px; border-radius: 50%; background: radial-gradient(ellipse, rgba(31,111,208,.55), transparent 70%); filter: blur(10px); z-index: 1; }

.trust-bar { position: relative; z-index: 2; margin-top: 62px; border-top: 1px solid rgba(255,255,255,.10); padding-top: 26px; display: flex; flex-wrap: wrap; gap: 14px 36px; justify-content: space-between; }
.trust-bar__item { display: flex; align-items: center; gap: 11px; font-size: .92rem; color: var(--t-invert-soft); }
.trust-bar__item svg { width: 22px; height: 22px; color: var(--accent); flex-shrink: 0; }

/* ============ 产品区 ============ */
.products-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.product-card { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden; display: flex; flex-direction: column; transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .4s var(--ease); }
.product-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: transparent; }
.product-card__media { position: relative; padding: 30px 20px; background: linear-gradient(170deg, #f3f7fc 0%, #e8eff8 100%); display: flex; align-items: center; justify-content: center; height: 210px; }
.product-card__media img { max-height: 100%; width: auto; object-fit: contain; transition: transform .5s var(--ease); }
.product-card:hover .product-card__media img { transform: scale(1.06); }
.product-card__tag { position: absolute; top: 14px; left: 14px; font-size: .72rem; font-weight: 700; letter-spacing: .03em; color: var(--brand); background: rgba(255,255,255,.85); border: 1px solid var(--brand-soft); padding: 4px 10px; border-radius: var(--r-pill); }
.product-card__body { padding: 22px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.product-card__body h3 { font-size: 1.15rem; margin-bottom: 10px; }
.product-card__body p { font-size: .88rem; color: var(--t-soft); line-height: 1.7; flex: 1; margin-bottom: 18px; }

/* ============ 解决方案区 ============ */
.solutions-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.solution-card { background: var(--metal); box-shadow: var(--metal-hi), var(--shadow-md); border-radius: var(--r-lg); padding: 34px; overflow: hidden; position: relative; border: 1px solid rgba(255,255,255,.06); transition: transform .4s var(--ease); }
.solution-card:hover { transform: translateY(-6px); }
.solution-card__idx { font-family: var(--font-num); font-size: .82rem; font-weight: 700; letter-spacing: .1em; color: var(--accent); margin-bottom: 12px; }
.solution-card h3 { color: #fff; font-size: 1.35rem; margin-bottom: 16px; }
.solution-card p { color: var(--t-invert-soft); font-size: .92rem; line-height: 1.8; margin-bottom: 24px; }
.solution-card__img { border-radius: var(--r); overflow: hidden; border: 1px solid rgba(255,255,255,.08); background: rgba(255,255,255,.03); }
.solution-card__img img { width: 100%; }
.solution-card .link-arrow { color: var(--accent); margin-top: 22px; }
.solution-card .link-arrow:hover { color: #ffbf57; }

/* ============ 核心优势区 ============ */
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.adv-card { background: var(--metal); box-shadow: var(--metal-hi); border: 1px solid rgba(255,255,255,.06); border-radius: var(--r-lg); padding: 34px 28px; position: relative; overflow: hidden; transition: transform .4s var(--ease), box-shadow .4s var(--ease); }
.adv-card::before { content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 3px; background: linear-gradient(90deg, var(--accent), var(--accent-strong)); transform: scaleX(0); transform-origin: left; transition: transform .4s var(--ease); }
.adv-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.adv-card:hover::before { transform: scaleX(1); }
.adv-card__icon { width: 58px; height: 58px; border-radius: var(--r); margin-bottom: 22px; display: flex; align-items: center; justify-content: center; background: linear-gradient(140deg, rgba(245,161,29,.18), rgba(245,161,29,.06)); border: 1px solid rgba(245,161,29,.28); }
.adv-card__icon svg { width: 30px; height: 30px; color: var(--accent); }
.adv-card__num { position: absolute; top: 26px; right: 28px; font-family: var(--font-num); font-size: 2.4rem; font-weight: 800; color: rgba(255,255,255,.06); }
.adv-card h3 { color: #fff; font-size: 1.2rem; margin-bottom: 10px; }
.adv-card p { color: var(--t-invert-soft); font-size: .9rem; line-height: 1.7; }

/* ============ 实力厂房带 ============ */
.strength { position: relative; padding: clamp(70px, 9vw, 120px) 0; color: #fff; overflow: hidden; background: linear-gradient(90deg, rgba(9,17,30,.94) 0%, rgba(9,17,30,.72) 45%, rgba(9,17,30,.35) 100%), url("../images/factory.png") center/cover no-repeat; }
.strength__inner { max-width: 620px; position: relative; z-index: 2; }
.strength .eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: var(--fs-xs); font-weight: 700; letter-spacing: .16em; text-transform: uppercase; color: var(--accent); margin-bottom: 16px; }
.strength .eyebrow::before { content: ""; width: 26px; height: 2px; background: currentColor; }
.strength h2 { color: #fff; font-size: var(--fs-h2); margin-bottom: 18px; }
.strength p { color: var(--t-invert-soft); font-size: var(--fs-lead); margin-bottom: 34px; }
.strength__stats { display: flex; flex-wrap: wrap; gap: 18px 48px; }
.strength__stat .num { font-family: var(--font-num); font-size: 2.2rem; font-weight: 800; color: #fff; }
.strength__stat .num .u { color: var(--accent); font-size: 1.2rem; }
.strength__stat .lbl { font-size: .84rem; color: var(--t-invert-faint); margin-top: 4px; }

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .hero__grid { grid-template-columns: 1fr; gap: 40px; }
  .hero__visual { order: -1; }
  .hero__device { max-height: 340px; }
}
@media (max-width: 768px) {
  .solutions-grid { grid-template-columns: 1fr; }
  .strength { background: linear-gradient(180deg, rgba(9,17,30,.9), rgba(9,17,30,.8)), url("../images/factory.png") center/cover no-repeat; }
}
@media (max-width: 560px) {
  .products-grid { grid-template-columns: 1fr; }
  .adv-grid { grid-template-columns: 1fr; }
  .hero { padding: 120px 0 70px; }
  .hero__cta .btn { flex: 1; }
  .trust-bar { gap: 14px 20px; }
  .trust-bar__item { font-size: .84rem; }
}