/* ============================================================
   blocks.css — 站头导航 / Hero / 核心能力块 / 页脚 / 各页局部
   组件级 @media 覆盖紧跟组件定义，写在同一个块内。
   ============================================================ */

/* —— 站头 —— */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10,10,11,0.86); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.site-header__inner { display: flex; align-items: center; justify-content: space-between; height: 84px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand__logo { width: 48px; height: 48px; border-radius: 12px; flex: none; }
.brand__name { font-family: var(--font-en); font-weight: 600; font-size: 18px; color: var(--text); letter-spacing: -0.01em; }

.nav { display: flex; align-items: center; gap: 32px; }
.nav__link { color: var(--text-2); font-size: 15px; font-weight: 500; transition: color .15s ease; }
.nav__link:hover { color: var(--text); }
.nav__link[aria-current="page"] { color: var(--text); }
.nav__cta { padding: 11px 18px; font-size: 15px; }

.nav-toggle { display: none; }

/* —— Hero / 页头 —— */
.page-hero { position: relative; overflow: hidden; padding-block: var(--sp-section); background: var(--bg); }
.page-hero::before {
  content: ""; position: absolute; top: -220px; right: -120px; width: 620px; height: 620px;
  background: radial-gradient(circle, rgba(232,35,42,0.18), transparent 62%); pointer-events: none;
}
.page-hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .55;
  background-image: repeating-linear-gradient(90deg, transparent 0, transparent 159px, rgba(255,255,255,0.022) 159px, rgba(255,255,255,0.022) 160px);
}
.page-hero > .container { position: relative; z-index: 1; }

.hero__grid { display: grid; grid-template-columns: 1fr auto; gap: var(--sp-8); align-items: center; }
.hero__content { display: flex; flex-direction: column; gap: var(--sp-4); max-width: var(--w-prose); }
.hero__title { font-size: var(--fs-h1); }
.hero__title--home { font-size: var(--fs-h1-home); }
.hero__lead { font-size: var(--fs-body); line-height: var(--lh-body); color: var(--text-3); max-width: var(--w-prose); }
.hero__cta { display: flex; gap: 14px; flex-wrap: wrap; margin-top: var(--sp-2); }
.hero__trust { font-family: var(--font-mono); font-size: var(--fs-small); color: var(--text-4); letter-spacing: .02em; margin-top: 4px; }

/* —— 手机壳（真机截图）—— */
.media--phone {
  width: 320px; max-width: 100%; aspect-ratio: 320 / 650; border-radius: 40px;
  background: #000; padding: 10px; margin-inline: auto;
  box-shadow: 0 30px 70px rgba(0,0,0,.55), inset 0 0 0 2px rgba(255,255,255,.08);
}
.media--phone img { width: 100%; height: 100%; object-fit: cover; border-radius: 30px; }

/* —— 核心能力块（交替左右）—— */
.feature-block { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-8); align-items: center; }
.feature-block + .feature-block { margin-top: var(--sp-8); }
.feature-block--rev .feature-block__media { order: -1; }
.feature-block__body { display: flex; flex-direction: column; gap: var(--sp-4); }
.feature-block__num { font-family: var(--font-mono); font-size: var(--fs-h3); font-weight: 700; color: var(--brand-ink); }
.feature-block__title { font-size: var(--fs-h2); font-weight: 900; line-height: 1.2; }
.feature-block__text { font-size: var(--fs-body); line-height: var(--lh-body); color: var(--text-3); }
.feature-block__bullets { font-family: var(--font-mono); font-size: var(--fs-small); color: var(--text-4); line-height: 1.9; white-space: pre-line; }

/* —— FAQ 两栏分组 —— */
.faq-group { display: grid; grid-template-columns: 300px 1fr; gap: var(--sp-8); padding-block: var(--sp-7); border-top: 1px solid var(--line); }
.faq-group__title { font-size: var(--fs-h3); font-weight: 700; }
.faq-group__sub { color: var(--text-4); font-size: var(--fs-card); line-height: var(--lh-card); margin-top: 8px; }
.faq-group__count { font-family: var(--font-mono); font-size: var(--fs-small); color: var(--brand-ink); margin-top: var(--sp-3); letter-spacing: .04em; }

/* —— Torznab 两栏 —— */
.torznab { display: grid; grid-template-columns: 1.25fr 1fr; gap: var(--sp-8); align-items: center; }
.torznab__title { font-size: var(--fs-h2); font-weight: 900; line-height: 1.2; margin-block: var(--sp-3) var(--sp-4); white-space: pre-line; }
.torznab__text { font-size: var(--fs-body); line-height: var(--lh-body); color: var(--text-3); }
.torznab__chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: var(--sp-5); }
.torznab__visual { display: flex; flex-direction: column; gap: 14px; }
.torznab__row { background: var(--tile); border-radius: var(--r-tile); padding: var(--sp-4) var(--sp-5); display: flex; align-items: center; justify-content: space-between; box-shadow: inset 0 0 0 1px var(--line); }
.torznab__row span:first-child { color: var(--text-2); font-size: var(--fs-card); }
.torznab__row span:last-child { font-family: var(--font-mono); font-size: var(--fs-small); color: var(--brand-ink); }

/* —— 筛选演示区（排序 + 过滤）—— */
.filter-demo { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-7); margin-top: var(--sp-6); }
.filter-demo__group-title { font-size: var(--fs-h3); font-weight: 700; margin-bottom: var(--sp-4); }
.filter-demo__chips { display: flex; flex-wrap: wrap; gap: 10px; }
.filter-demo__toggles { display: flex; flex-direction: column; gap: 12px; }

/* —— 权限收尾 —— */
.note-line { color: var(--text-4); font-size: var(--fs-card); line-height: var(--lh-card); max-width: var(--w-prose); margin-top: var(--sp-5); }

/* —— 页脚 —— */
.site-footer { background: var(--bg-footer); padding-block: var(--sp-8) var(--sp-6); }
.footer__top { display: grid; grid-template-columns: 1.2fr 2fr; gap: var(--sp-8); }
.footer__brand .brand { margin-bottom: var(--sp-4); }
.footer__tagline { color: var(--text-4); font-size: var(--fs-card); line-height: var(--lh-card); }
.footer__cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-6); }
.footer__col-title { font-family: var(--font-mono); font-size: var(--fs-small); color: var(--text-4); font-weight: 700; letter-spacing: .06em; text-transform: uppercase; margin-bottom: var(--sp-4); }
.footer__col li { margin-bottom: 12px; }
.footer__col a { color: var(--text-2); font-size: var(--fs-card); }
.footer__col a:hover { color: var(--text); }
.footer__giant {
  font-family: var(--font-display); font-weight: 900; line-height: .95;
  font-size: clamp(46px, 12vw, 150px); color: rgba(255,255,255,0.05);
  letter-spacing: -0.02em; margin-block: var(--sp-7) var(--sp-5);
  user-select: none; white-space: nowrap; overflow: hidden;
}
.footer__divider { height: 1px; background: var(--line); }
.footer__bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; padding-top: var(--sp-5); }
.footer__bottom p { font-size: var(--fs-small); color: var(--text-4); }

/* —— 响应式 —— */
@media (max-width: 1024px) {
  .hero__grid { grid-template-columns: 1fr; gap: var(--sp-6); }
  .hero__media { margin-top: var(--sp-2); }
  .feature-block, .feature-block--rev { grid-template-columns: 1fr; }
  .feature-block--rev .feature-block__media { order: 0; }
  .torznab { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .media--phone { width: 250px; }
}
@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; flex-direction: column; justify-content: center; gap: 5px; width: 44px; height: 44px; }
  .nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text); margin-inline: auto; transition: transform .2s ease, opacity .2s ease; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .nav {
    position: absolute; top: 84px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg-footer); border-bottom: 1px solid var(--line);
    padding: 8px var(--pad-x) 20px; display: none;
  }
  .nav.is-open { display: flex; }
  .nav__link { padding: 14px 0; border-top: 1px solid var(--line); }
  .nav__cta { margin-top: 14px; }
  .faq-group { grid-template-columns: 1fr; gap: var(--sp-4); }
}
@media (max-width: 768px) {
  .footer__top { grid-template-columns: 1fr; gap: var(--sp-7); }
  .footer__cols { grid-template-columns: repeat(2, 1fr); }
  .filter-demo { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .footer__cols { grid-template-columns: 1fr; }
}