/* ============================================================
   solution.css — 行业解决方案详情页（配合 base.css + sections.css）
   ============================================================ */

.sol-body { background: var(--bg-0); }

/* ---------- 顶部导航 ---------- */
.sol-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.85);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--border);
}
.sol-header__inner {
  max-width: var(--container); margin: 0 auto;
  height: 64px; padding: 0 var(--gutter);
  display: flex; align-items: center; gap: 16px;
}
.sol-logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; color: var(--text-0); font-size: 1.02rem; }
.sol-logo svg { width: 30px; height: 30px; }
.sol-nav { margin-left: auto; display: flex; align-items: center; gap: 22px; }
.sol-nav a { font-size: var(--fs-sm); color: var(--text-2); transition: color .25s var(--ease); }
.sol-nav a:hover { color: var(--blue); }
.sol-nav__cta {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 9px 18px; border-radius: var(--r-full);
  background: var(--grad); color: #fff !important; font-weight: 600;
  box-shadow: var(--glow-blue);
}
.sol-nav__cta svg { width: 15px; height: 15px; }
@media (max-width: 680px) {
  .sol-nav { gap: 12px; }
  .sol-nav__back { display: none; }
}

/* ---------- Hero ---------- */
.sol-hero {
  position: relative; overflow: hidden;
  color: #fff;
  background: linear-gradient(125deg, #0c2bb3 0%, #0a1856 55%, #06123f 100%);
  padding: clamp(54px, 8vw, 104px) 0 clamp(48px, 7vw, 88px);
}
.sol-hero::before {
  content: ""; position: absolute; right: -120px; top: -140px;
  width: 520px; height: 520px;
  background: radial-gradient(circle, rgba(0,184,255,.30), transparent 68%);
}
.sol-hero::after {
  content: ""; position: absolute; left: -100px; bottom: -180px;
  width: 460px; height: 460px;
  background: radial-gradient(circle, rgba(43,77,255,.30), transparent 70%);
}
.sol-hero__inner { position: relative; max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.sol-crumb { font-size: var(--fs-sm); color: rgba(255,255,255,.6); margin-bottom: 22px; }
.sol-crumb a { color: rgba(255,255,255,.6); }
.sol-crumb a:hover { color: #7fd6ff; }
.sol-crumb span { color: rgba(255,255,255,.9); }
.sol-hero__eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--font-num); font-size: var(--fs-xs); letter-spacing: .16em;
  color: #7fd6ff; margin-bottom: 16px;
  padding: 6px 14px; border: 1px solid rgba(127,214,255,.4); border-radius: var(--r-full);
}
.sol-hero h1 {
  color: #fff; font-weight: 800; line-height: 1.18;
  font-size: clamp(2.1rem, 4.6vw, 3.4rem); margin-bottom: 18px;
  max-width: 20ch; text-wrap: balance;
}
.sol-hero__sub { color: rgba(255,255,255,.82); font-size: clamp(1rem, 1.5vw, 1.15rem); max-width: 62ch; line-height: 1.85; }
.sol-hero__sub strong { color: #fff; font-weight: 700; }
.sol-hero__tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.sol-hero__tags li {
  font-size: var(--fs-sm); color: #dbe6ff;
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.18);
  border-radius: var(--r-full); padding: 7px 16px;
}
.sol-hero__cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }

/* ---------- 通用区块 ---------- */
.sol-sec { padding: clamp(56px, 8vw, 100px) 0; }
.sol-sec--alt { background: var(--bg-1); }
.sol-sec--dark { background: linear-gradient(135deg, #0d1235, #0a1856); }
.sol-head { max-width: 760px; margin-bottom: clamp(34px, 5vw, 52px); }
.sol-head--center { margin-left: auto; margin-right: auto; text-align: center; }
.sol-head .sol-eyebrow {
  display: inline-block; font-family: var(--font-num); font-size: var(--fs-xs);
  letter-spacing: .16em; color: var(--blue); margin-bottom: 12px;
}
.sol-h2 { font-size: var(--fs-h2); font-weight: 800; line-height: 1.28; margin-bottom: 16px; text-wrap: balance; }
.sol-lead { color: var(--text-1); font-size: clamp(1rem, 1.4vw, 1.1rem); line-height: 1.9; }
.sol-lead strong { color: var(--text-0); font-weight: 700; }

/* ---------- 能力 / 特点卡片 ---------- */
.sol-feats { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); }
.sol-feats--2 { grid-template-columns: repeat(2, 1fr); }
.sol-feat {
  padding: 30px 28px; background: #fff; border: 1px solid var(--border);
  border-radius: var(--r-lg); box-shadow: var(--shadow-soft);
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .4s var(--ease);
}
.sol-feat:hover { transform: translateY(-5px); box-shadow: var(--shadow-card); border-color: transparent; }
.sol-feat__ic {
  width: 50px; height: 50px; display: grid; place-items: center; border-radius: 13px;
  background: linear-gradient(135deg, rgba(43,77,255,.1), rgba(0,184,255,.12));
  color: var(--blue); margin-bottom: 18px;
}
.sol-feat__ic .icon { width: 25px; height: 25px; }
.sol-feat h3 { font-size: 1.12rem; margin-bottom: 9px; }
.sol-feat p { color: var(--text-2); font-size: var(--fs-sm); line-height: 1.7; }

/* ---------- 应用场景（编号步骤） ---------- */
.sol-scenes { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--gap); }
.sol-scenes--3 { grid-template-columns: repeat(3, 1fr); margin-top: clamp(30px, 4vw, 44px); }
.sol-scene {
  position: relative; display: flex; gap: 18px;
  padding: 26px 26px 26px 24px; background: #fff;
  border: 1px solid var(--border); border-radius: var(--r-lg); box-shadow: var(--shadow-soft);
}
.sol-scene__no {
  flex: none; width: 40px; height: 40px; display: grid; place-items: center;
  font-family: var(--font-num); font-weight: 700; font-size: 1.05rem;
  color: var(--blue); background: var(--grad-soft); border-radius: 11px;
}
.sol-scene h3 { font-size: 1.05rem; margin-bottom: 6px; }
.sol-scene p { color: var(--text-2); font-size: var(--fs-sm); line-height: 1.65; }

/* ---------- 装备 / 平台 ---------- */
.sol-kit { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--gap); }
.sol-kit__item {
  padding: 24px 22px; background: #fff; border: 1px solid var(--border);
  border-radius: var(--r-md); text-align: left;
}
.sol-kit__ic { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 11px;
  background: var(--grad-soft); color: var(--blue); margin-bottom: 14px; }
.sol-kit__ic .icon { width: 22px; height: 22px; }
.sol-kit__item h4 { font-size: 1rem; margin-bottom: 6px; }
.sol-kit__item p { color: var(--text-2); font-size: var(--fs-sm); line-height: 1.6; }

/* ---------- 案例 ---------- */
.sol-cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); }
.sol-case {
  padding: 28px 26px; border-radius: var(--r-lg);
  background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow-soft);
}
.sol-case__tag {
  display: inline-block; font-size: var(--fs-xs); color: var(--blue);
  background: var(--grad-soft); border-radius: var(--r-full); padding: 4px 12px; margin-bottom: 14px;
}
.sol-case h3 { font-size: 1.06rem; margin-bottom: 10px; line-height: 1.5; }
.sol-case p { color: var(--text-2); font-size: var(--fs-sm); line-height: 1.7; }

/* ---------- 配图：大图 figure ---------- */
.sol-figure {
  margin-top: clamp(30px, 4vw, 44px);
  border-radius: var(--r-lg); overflow: hidden;
  border: 1px solid var(--border); box-shadow: var(--shadow-card);
  background: #fff;
}
.sol-figure img { width: 100%; height: auto; display: block; }
.sol-figure figcaption {
  padding: 13px 22px; font-size: var(--fs-sm); color: var(--text-2);
  border-top: 1px solid var(--border);
}
.sol-figure--split {
  display: grid; grid-template-columns: 1.35fr 1fr; align-items: stretch; gap: 0;
}
.sol-figure--split img { height: 100%; object-fit: cover; }
.sol-figure--split .sol-figure__aside {
  padding: clamp(26px, 3vw, 38px); display: flex; flex-direction: column; justify-content: center; gap: 12px;
}
.sol-figure--split .sol-figure__aside h3 { font-size: 1.16rem; }
.sol-figure--split .sol-figure__aside p { color: var(--text-2); font-size: var(--fs-sm); line-height: 1.75; }
@media (max-width: 760px) { .sol-figure--split { grid-template-columns: 1fr; } }

/* ---------- 配图：实景 / 装备图廊 ---------- */
.sol-gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); }
.sol-gallery--2 { grid-template-columns: repeat(2, 1fr); }
.sol-gallery--4 { grid-template-columns: repeat(4, 1fr); }
.sol-gallery figure {
  margin: 0; border-radius: var(--r-lg); overflow: hidden;
  border: 1px solid var(--border); box-shadow: var(--shadow-soft); background: #fff;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease);
}
.sol-gallery figure:hover { transform: translateY(-5px); box-shadow: var(--shadow-card); }
.sol-gallery img { width: 100%; height: 200px; object-fit: cover; display: block; background: #eef2fb; }
.sol-gallery img.is-contain { object-fit: contain; padding: 14px; }
.sol-gallery figcaption { padding: 13px 16px; font-size: var(--fs-sm); color: var(--text-1); font-weight: 600; }
@media (max-width: 1023px) { .sol-gallery, .sol-gallery--4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .sol-gallery, .sol-gallery--2, .sol-gallery--4 { grid-template-columns: 1fr; } }

/* ---------- CTA 带 ---------- */
.sol-ctaband { position: relative; overflow: hidden; color: #fff;
  background: var(--grad-deep); padding: clamp(56px, 8vw, 92px) 0; text-align: center; }
.sol-ctaband::before { content: ""; position: absolute; left: 50%; top: -160px; transform: translateX(-50%);
  width: 600px; height: 600px; background: radial-gradient(circle, rgba(0,184,255,.22), transparent 65%); }
.sol-ctaband__inner { position: relative; max-width: 940px; margin: 0 auto; padding: 0 var(--gutter); }
.sol-ctaband h2 { color: #fff; font-size: clamp(1.7rem, 3vw, 2.5rem); font-weight: 800; line-height: 1.3; margin-bottom: 16px; text-wrap: balance; }
.sol-ctaband p { color: rgba(255,255,255,.82); margin-bottom: 30px; font-size: 1.05rem; }
.sol-ctaband__btns { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }

/* ---------- 迷你页脚 ---------- */
.sol-foot { background: #0a0f24; color: rgba(255,255,255,.5); padding: 30px 0; }
.sol-foot__inner { max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter);
  display: flex; flex-wrap: wrap; gap: 12px 26px; align-items: center; font-size: var(--fs-sm); }
.sol-foot a { color: rgba(255,255,255,.7); }
.sol-foot a:hover { color: #fff; }
.sol-foot__sep { margin-left: auto; }

/* ---------- 响应式 ---------- */
@media (max-width: 1023px) {
  .sol-feats, .sol-feats--2 { grid-template-columns: repeat(2, 1fr); }
  .sol-scenes--3 { grid-template-columns: repeat(2, 1fr); }
  .sol-kit { grid-template-columns: repeat(2, 1fr); }
  .sol-cases { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .sol-feats, .sol-feats--2, .sol-scenes, .sol-scenes--3, .sol-kit { grid-template-columns: 1fr; }
}