/* ==========================================================================
   骐云智汇 PRAJNA · 官网样式（自定义，无 Bootstrap）
   设计：工业科技风；深蓝(#0b1f3a)→青(#0e7490)主色，克制留白，响应式
   维护：变量集中在 :root；断点 640 / 960
   ========================================================================== */
:root {
  /* 标准色系：主色 PRAJNA 蓝 #0057b8（CI 规范见 /ci.html） */
  --navy: #001d45;
  --navy-2: #08448f;
  --cyan: #0057b8;   /* 主蓝 primary */
  --cyan-2: #4090e0; /* 亮蓝（渐变浅色端） */
  --amber: #f59e0b;
  --ink: #1a2233;
  --muted: #52627c;
  --line: #dfe7f3;
  --bg: #ffffff;
  --bg-soft: #f4f7fd;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(11, 31, 58, .08);
  --shadow-lg: 0 18px 50px rgba(11, 31, 58, .14);
  --maxw: 1140px;
  --font: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; font-family: var(--font); color: var(--ink);
  background: var(--bg); line-height: 1.7; -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { line-height: 1.25; font-weight: 700; letter-spacing: -.01em; margin: 0 0 .5em; }
p { margin: 0 0 1em; }
a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }
.section { padding: 78px 0; }
.section--soft { background: var(--bg-soft); }
.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: .14em;
  text-transform: uppercase; color: var(--cyan); margin-bottom: 14px;
}
.section-head { max-width: 680px; margin: 0 auto 52px; text-align: center; }
.section-head h2 { font-size: clamp(26px, 3.4vw, 38px); }
.section-head p { color: var(--muted); font-size: 17px; margin: 0; }

/* 按钮 */
.btn {
  display: inline-block; padding: 12px 26px; border-radius: 999px; font-weight: 600;
  font-size: 15px; transition: .18s ease; border: 1.5px solid transparent; cursor: pointer;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn--primary { background: linear-gradient(120deg, var(--cyan), var(--cyan-2)); color: #fff; box-shadow: 0 8px 22px rgba(14,116,144,.35); }
.btn--ghost { border-color: rgba(255,255,255,.55); color: #fff; }
.btn--ghost:hover { background: rgba(255,255,255,.12); }

/* 顶部导航 */
.nav {
  position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.86);
  backdrop-filter: blur(10px); border-bottom: 1px solid var(--line);
}
.nav__in { display: flex; align-items: center; justify-content: space-between; height: 66px; }
.brand { display: flex; align-items: center; gap: 11px; color: var(--navy); line-height: 1; font-weight: 900; font-size: 19px; letter-spacing: 0; }
.brand__name { display: block; height: 31px; width: auto; flex: none; }
.brand:hover { text-decoration: none; }
.brand__mark { width: 36px; height: 36px; flex: none; display: block; }
.nav__links { display: flex; align-items: center; gap: 28px; }
.nav__links a { color: var(--ink); font-weight: 500; font-size: 15px; }
.nav__links a:hover { color: var(--cyan); text-decoration: none; }
.nav__cta { padding: 9px 20px; }
@media (max-width: 720px) { .nav__links a:not(.btn) { display: none; } }

/* Hero */
.hero {
  position: relative; color: #fff; overflow: hidden;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-2) 55%, var(--cyan) 130%);
}
.hero__bg {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  opacity: .32; mix-blend-mode: screen;
}
.hero__in { position: relative; padding: 96px 0 104px; max-width: 760px; }
.hero h1 { font-size: clamp(30px, 5vw, 52px); margin-bottom: 18px; }
.hero .lead { font-size: clamp(16px, 2vw, 20px); color: #d5e2f2; margin-bottom: 32px; max-width: 620px; }
.hero__cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero__tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 40px; }
.hero__tags span { font-size: 13px; padding: 6px 14px; border-radius: 999px; background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.18); color: #cfe0f2; }

/* 能力网格 */
.grid-feats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
@media (max-width: 900px) { .grid-feats { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .grid-feats { grid-template-columns: 1fr; } }
.feat {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 24px; transition: .2s ease;
}
.feat:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: #cfdfff; }
.feat__ic { width: 44px; height: 44px; border-radius: 11px; display: grid; place-items: center; margin-bottom: 16px; background: #e8efff; color: var(--cyan); }
.feat__ic svg { width: 24px; height: 24px; }
.feat h3 { font-size: 18px; margin-bottom: 8px; }
.feat p { color: var(--muted); font-size: 15px; margin: 0; }
.feat .badge { margin-top: 12px; }

.badge { display: inline-block; font-size: 12px; font-weight: 600; padding: 3px 10px; border-radius: 999px; }
.badge--live { background: #e7f7ee; color: #1a7f4b; }
.badge--soon { background: #fef3e2; color: #b46812; }
.badge--plan { background: #eef1f6; color: #566; }

/* 架构图 */
.arch { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 18px; }
@media (max-width: 760px) { .arch { grid-template-columns: 1fr; } .arch__link { transform: rotate(90deg); } }
.arch__col { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow); }
.arch__col h3 { font-size: 15px; color: var(--muted); letter-spacing: .06em; text-transform: uppercase; margin-bottom: 16px; }
.arch__col ul { list-style: none; margin: 0; padding: 0; }
.arch__col li { padding: 9px 0; border-bottom: 1px dashed var(--line); font-size: 15px; }
.arch__col li:last-child { border-bottom: none; }
.arch__link { display: grid; place-items: center; text-align: center; color: var(--cyan); font-weight: 700; font-size: 13px; gap: 8px; }
.arch__link .arrow { font-size: 26px; }
.arch__link .pill { background: var(--navy); color: #fff; padding: 8px 14px; border-radius: 999px; font-size: 12px; white-space: nowrap; }

/* 标准条 */
.specs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 760px) { .specs { grid-template-columns: repeat(2, 1fr); } }
.spec { text-align: center; padding: 24px 14px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.spec b { display: block; font-size: 22px; color: var(--navy); margin-bottom: 4px; }
.spec span { font-size: 13px; color: var(--muted); }

/* 产品卡 */
.grid-prod { display: grid; grid-template-columns: 1.35fr 1fr 1fr; gap: 22px; align-items: stretch; }
@media (max-width: 860px) { .grid-prod { grid-template-columns: 1fr; } }
.prod { display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #fff; transition: .2s; }
.prod:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.prod--lead { border: 1.5px solid #bcd2ff; }
.prod__img { aspect-ratio: 16/9; background: linear-gradient(135deg, var(--navy-2), var(--cyan)); position: relative; }
.prod__img img { width: 100%; height: 100%; object-fit: cover; }
.prod__body { padding: 22px 22px 24px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.prod__body h3 { font-size: 19px; margin: 0; }
.prod__body .en { font-size: 12px; color: var(--muted); letter-spacing: .08em; text-transform: uppercase; }
.prod__body p { color: var(--muted); font-size: 14.5px; margin: 0; }
.prod__body .more { margin-top: auto; padding-top: 8px; font-weight: 600; font-size: 14px; }
.prod__tags { display: flex; flex-wrap: wrap; gap: 7px; }
.prod__tags i { font-style: normal; font-size: 12px; color: var(--cyan); background: #eaf1ff; padding: 3px 9px; border-radius: 6px; }

/* CTA 条 */
.cta-band { background: linear-gradient(120deg, var(--navy), var(--cyan)); color: #fff; border-radius: 22px; padding: 54px 40px; text-align: center; }
.cta-band h2 { font-size: clamp(24px, 3vw, 34px); }
.cta-band p { color: #d5e2f2; max-width: 560px; margin: 0 auto 26px; }

/* 页脚 */
.foot { background: var(--navy); color: #9fb2cc; padding: 46px 0 30px; font-size: 14px; }
.foot__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 30px; margin-bottom: 30px; }
@media (max-width: 720px) { .foot__grid { grid-template-columns: 1fr; } }
.foot h4 { color: #fff; font-size: 14px; margin-bottom: 12px; letter-spacing: .04em; }
.foot a { color: #9fb2cc; display: block; padding: 3px 0; }
.foot a:hover { color: #fff; text-decoration: none; }
.foot__brand { color: #fff; font-weight: 800; font-size: 18px; margin-bottom: 10px; }
.foot__bar { border-top: 1px solid rgba(255,255,255,.1); padding-top: 20px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; font-size: 13px; }

/* 内页通用 */
.page-hero { background: linear-gradient(135deg, var(--navy), var(--navy-2)); color: #fff; padding: 60px 0; }
.page-hero h1 { font-size: clamp(28px, 4vw, 42px); margin-bottom: 10px; }
.page-hero p { color: #cfe0f2; font-size: 18px; margin: 0; max-width: 640px; }
.prose { max-width: 760px; }
.prose h2 { font-size: 24px; margin-top: 1.4em; }
.prose h3 { font-size: 18px; }
.prose ul { padding-left: 20px; color: var(--ink); }
.prose li { margin: 6px 0; }

/* 内页 hero 背景照片（蓝调照片 + 深蓝遮罩） */
.page-hero { position: relative; overflow: hidden; }
.page-hero__bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .25; mix-blend-mode: screen; }
.page-hero .wrap { position: relative; }

/* 流程工业：图文两列 */
.split { display: grid; grid-template-columns: 1.05fr 1fr; gap: 44px; align-items: center; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }
.split .photo { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-lg); border: 1px solid var(--line); }
.split .photo img { width: 100%; display: block; }
.chips { display: flex; flex-wrap: wrap; gap: 10px; margin: 22px 0 0; padding: 0; list-style: none; }
.chips li { font-size: 13.5px; font-weight: 600; color: var(--navy-2); background: #eaf1ff; border: 1px solid #d4e2ff; padding: 6px 14px; border-radius: 999px; }

/* 工作场景：块图卡片（避免技术细节，纯场景语言） */
.grid-scenes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
@media (max-width: 900px) { .grid-scenes { grid-template-columns: 1fr; } }
.scene { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; display: flex; flex-direction: column; gap: 16px; }
.scene h3 { font-size: 17px; margin: 0; }
.scene p { color: var(--muted); font-size: 14px; margin: 0; }
.flow { display: flex; flex-direction: column; gap: 4px; }
.frow { display: flex; gap: 8px; }
.fstep { flex: 1; text-align: center; font-size: 12.5px; font-weight: 600; color: var(--navy-2);
         background: #f2f6ff; border: 1.5px solid #d4e2ff; border-radius: 9px; padding: 8px 6px; line-height: 1.45; }
.fstep.is-core { background: var(--cyan); border-color: var(--cyan); color: #fff; }
.fjoin { text-align: center; color: var(--cyan); font-weight: 800; font-size: 14px; line-height: 1.2; }

/* ==========================================================================
   科技风部署块图（内联 SVG 用类）：场景卡里的流程图
   ========================================================================== */
.flow-svg { width: 100%; height: auto; display: block; }
.fs-zone { fill: #f6faff; stroke: #cfe2f6; stroke-dasharray: 4 4; }
.fs-node { fill: #ffffff; stroke: #bcd6f5; stroke-width: 1.4; }
.fs-txt { font-size: 10px; fill: #08448f; font-weight: 600; text-anchor: middle; }
.fs-lbl { font-size: 9px; fill: #52627c; font-weight: 700; letter-spacing: .1em; }
.fs-coretxt { font-size: 12px; fill: #fff; font-weight: 800; text-anchor: middle; }
.fs-subtxt { font-size: 8.5px; fill: #cfe4ff; font-weight: 600; text-anchor: middle; letter-spacing: .06em; }
.fs-led { fill: #4090e0; }
.fs-bus { stroke: #0057b8; stroke-width: 2; fill: none; }
.fs-link { fill: none; stroke: #4090e0; stroke-width: 1.6; }
.fs-anim { stroke-dasharray: 5 6; animation: fsdash 1.3s linear infinite; }
.fs-halo { fill: #0057b8; animation: fsbreathe 3.2s ease-in-out infinite; }
.fs-halo2 { fill: #0057b8; animation: fsbreathe 3.2s ease-in-out 1.6s infinite; }
@keyframes fsdash { to { stroke-dashoffset: -22; } }
@keyframes fsbreathe { 0%, 100% { opacity: .05; } 50% { opacity: .16; } }
@media (prefers-reduced-motion: reduce) { .fs-anim, .fs-halo, .fs-halo2 { animation: none; } }