/* 易云城 · 软件中心（soft.eycit.com） */

:root {
  --ink: #0B1524;
  --ink-2: #16233A;
  --ink-3: #22314C;
  --muted: #66758C;
  --muted-2: #8A99AF;
  --line: #E4EAF3;
  --line-2: #EFF3F9;
  --bg: #F5F7FB;
  --brand: #1668FF;
  --brand-2: #0B4FD8;
  --brand-soft: #EAF1FF;
  --accent: #00C2A8;
  --ok: #12B76A;
  --warn: #F59E0B;
  --font: "PingFang SC", "Microsoft YaHei UI", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, "Segoe UI", sans-serif;
  --shadow-sm: 0 1px 2px rgba(11, 21, 36, .06);
  --shadow: 0 12px 32px rgba(11, 21, 36, .08), 0 2px 6px rgba(11, 21, 36, .04);
  --shadow-lg: 0 24px 60px rgba(11, 21, 36, .16);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; font-family: var(--font); color: var(--ink); background: var(--bg);
  font-size: 15px; line-height: 1.65; -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
img, svg { display: block; }
::selection { background: rgba(22, 104, 255, .18); }

.wrap { width: min(1140px, calc(100% - 48px)); margin: 0 auto; }

/* 顶栏 */
.nav { position: sticky; top: 0; z-index: 60; background: rgba(255,255,255,.88); backdrop-filter: saturate(180%) blur(14px); border-bottom: 1px solid var(--line); }
.nav-inner { display: flex; align-items: center; gap: 26px; height: 66px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; }
.brand-mark { width: 32px; height: 32px; border-radius: 9px; background: linear-gradient(160deg, #2B7BFF, #0B4FD8); color: #fff; display: grid; place-items: center; font-size: 16px; font-weight: 700; box-shadow: 0 4px 12px rgba(22,104,255,.32); }
.brand small { display: block; font-size: 10.5px; font-weight: 500; color: var(--muted); letter-spacing: 1.5px; }
.nav-links { display: flex; gap: 22px; }
.nav-links a { font-size: 14px; color: var(--ink-3); padding: 6px 2px; border-bottom: 2px solid transparent; }
.nav-links a:hover, .nav-links a.on { color: var(--brand); border-color: var(--brand); }
.nav-right { margin-left: auto; display: flex; gap: 10px; align-items: center; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 44px; padding: 0 22px; border-radius: 11px; border: 1px solid transparent; font-size: 14.5px; font-weight: 600; transition: all .18s ease; white-space: nowrap; }
.btn-primary { background: var(--brand); color: #fff; box-shadow: 0 8px 20px rgba(22,104,255,.26); }
.btn-primary:hover { background: var(--brand-2); transform: translateY(-1px); }
.btn-ghost { background: #fff; color: var(--ink-2); border-color: var(--line); }
.btn-ghost:hover { border-color: #C9D6EA; }
.btn-dark { background: var(--ink); color: #fff; }
.btn-sm { height: 34px; padding: 0 14px; font-size: 13px; border-radius: 9px; }
.btn-lg { height: 52px; padding: 0 28px; font-size: 16px; border-radius: 13px; }

/* Hero */
.hero { position: relative; overflow: hidden; color: #fff;
  background: radial-gradient(900px 420px at 80% -12%, rgba(43,123,255,.4), transparent 62%),
              radial-gradient(700px 360px at 6% 112%, rgba(0,194,168,.16), transparent 60%),
              linear-gradient(165deg, #0B1524, #10203A 55%, #0C1B33); }
.hero::after { content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 56px 56px; mask-image: radial-gradient(70% 60% at 50% 40%, #000 20%, transparent 78%); }
.hero-inner { position: relative; z-index: 2; padding: 78px 0 84px; display: grid; grid-template-columns: 1.05fr .95fr; gap: 54px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 12.5px; letter-spacing: 1.6px; text-transform: uppercase; color: #9EC0FF; border: 1px solid rgba(158,192,255,.28); padding: 6px 12px; border-radius: 999px; background: rgba(158,192,255,.07); }
.eyebrow .live { width: 6px; height: 6px; border-radius: 50%; background: #38E3B0; box-shadow: 0 0 0 4px rgba(56,227,176,.16); }
.hero h1 { font-size: 44px; line-height: 1.2; margin: 22px 0 16px; letter-spacing: -.5px; }
.hero h1 em { font-style: normal; color: #7FB0FF; }
.hero p { font-size: 16px; color: #B9C7DC; max-width: 520px; margin: 0 0 26px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.hero-note { margin-top: 16px; font-size: 12.5px; color: #7E90AB; }
.hero-stats { display: flex; gap: 34px; margin-top: 34px; }
.hero-stats b { display: block; font-size: 22px; letter-spacing: -.3px; }
.hero-stats span { font-size: 12px; color: #8FA8C8; }

/* Hero 右侧：产品窗口 */
.shot-frame { background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.13); border-radius: 18px; padding: 10px; box-shadow: 0 30px 70px rgba(0,0,0,.45); backdrop-filter: blur(6px); }
.shot-bar { display: flex; align-items: center; gap: 7px; padding: 6px 8px 10px; }
.shot-bar i { width: 9px; height: 9px; border-radius: 50%; background: rgba(255,255,255,.16); }
.shot-bar span { margin-left: 6px; font-size: 11.5px; color: #93A6C0; letter-spacing: .3px; }
.shot-frame img { width: 100%; border-radius: 10px; display: block; }

/* 通用区块 */
section.block { padding: 72px 0; }
.sec-head { margin-bottom: 26px; }
.sec-head.flex { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; }
.sec-tag { font-size: 12px; letter-spacing: 1.6px; text-transform: uppercase; color: var(--brand); font-weight: 700; }
.sec-head h2 { font-size: 30px; margin: 6px 0 6px; letter-spacing: -.4px; }
.sec-head p { margin: 0; color: var(--muted); font-size: 14.5px; }

/* 产品卡 */
.products { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.product { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 26px; display: flex; flex-direction: column; gap: 14px; transition: all .2s ease; }
.product:hover { box-shadow: var(--shadow); transform: translateY(-2px); border-color: #D5E1F3; }
.product-head { display: flex; gap: 14px; align-items: flex-start; }
.app-ico { width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; color: #fff; font-weight: 700; font-size: 18px; flex: none; box-shadow: inset 0 1px 0 rgba(255,255,255,.25), 0 6px 14px rgba(11,21,36,.16); }
.product h3 { margin: 2px 0 4px; font-size: 19px; display: flex; align-items: center; gap: 8px; }
.ver { font-size: 11px; font-weight: 600; color: var(--brand); background: var(--brand-soft); padding: 2px 8px; border-radius: 999px; }
.product .tagline { color: var(--muted); font-size: 13.5px; margin: 0; }
.product .meta { display: flex; gap: 10px; flex-wrap: wrap; font-size: 12px; color: var(--muted-2); }
.product .meta span { background: #F3F6FB; border-radius: 6px; padding: 3px 8px; }
.product .actions { display: flex; gap: 10px; margin-top: auto; padding-top: 6px; }
.product .actions .btn { flex: 1; }

.badge-soon { font-size: 11px; color: var(--muted); background: #F3F6FB; border: 1px dashed #CBD6E6; border-radius: 999px; padding: 2px 8px; }
.product.soon { background: #FAFBFE; border-style: dashed; }
.product.soon .app-ico { background: #E6ECF6 !important; color: #8A99AF; box-shadow: none; }

/* 原则 / 场景卡片（也可作为链接） */
.principles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.principle { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 22px; color: inherit; text-decoration: none; transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease; }
a.principle:hover { border-color: var(--brand); box-shadow: 0 6px 20px rgba(11,79,216,.10); transform: translateY(-2px); }
.principle .ic { width: 36px; height: 36px; border-radius: 10px; background: var(--brand-soft); color: var(--brand); display: grid; place-items: center; margin-bottom: 12px; }
.principle h3 { margin: 0 0 6px; font-size: 15.5px; }
.principle p { margin: 0; font-size: 13px; color: var(--muted); }

/* 截图区 */
.shots { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.shot-card { background: #fff; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; }
.shot-card img { width: 100%; display: block; border-bottom: 1px solid var(--line); }
.shot-card .cap { padding: 14px 16px; font-size: 13px; color: var(--muted); }
.shot-card .cap b { color: var(--ink-2); }

/* 版本表 */
.table-wrap { background: #fff; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; }
table.ver-table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.ver-table th, .ver-table td { padding: 13px 16px; text-align: left; border-bottom: 1px solid var(--line-2); vertical-align: top; }
.ver-table thead th { background: #FAFBFE; color: var(--muted); font-size: 12px; font-weight: 600; }
.ver-table tr:last-child td { border-bottom: 0; }
.ver-table code { font-size: 11.5px; color: var(--muted); word-break: break-all; }

/* FAQ */
.faq { background: #fff; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; }
.faq-item { border-bottom: 1px solid var(--line-2); }
.faq-item:last-child { border-bottom: 0; }
.faq-q { width: 100%; background: none; border: 0; text-align: left; padding: 18px 22px; display: flex; align-items: center; gap: 12px; font-size: 14.5px; font-weight: 600; color: var(--ink); }
.faq-q .plus { margin-left: auto; width: 22px; height: 22px; border-radius: 50%; background: #F2F5FA; display: grid; place-items: center; transition: transform .2s; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .28s ease; color: var(--muted); font-size: 13.5px; }
.faq-a > div { padding: 0 22px 18px; }
.faq-item.open .faq-a { max-height: 320px; }
.faq-item.open .plus { transform: rotate(45deg); background: var(--brand-soft); color: var(--brand); }

/* CTA 条 */
.cta { background: linear-gradient(160deg, #0B1524, #12294D); border-radius: 22px; color: #fff; padding: 38px 42px; display: flex; align-items: center; gap: 30px; flex-wrap: wrap; position: relative; overflow: hidden; }
.cta::before { content: ""; position: absolute; width: 380px; height: 380px; right: -100px; top: -160px; border-radius: 50%; background: radial-gradient(circle, rgba(43,123,255,.34), transparent 65%); }
.cta h2 { margin: 0 0 6px; font-size: 26px; }
.cta p { margin: 0; color: #B9C7DC; font-size: 14px; max-width: 620px; }
.cta .btn { margin-left: auto; position: relative; z-index: 1; }

/* 产品详情页 */
.pd-hero { background: linear-gradient(165deg, #0B1524, #10203A 60%, #0C1B33); color: #fff; padding: 54px 0 46px; }
.pd-hero .wrap { display: grid; grid-template-columns: 1.2fr .8fr; gap: 40px; align-items: center; }
.pd-hero h1 { font-size: 38px; margin: 14px 0 10px; letter-spacing: -.5px; }
.pd-hero p { color: #B9C7DC; max-width: 560px; margin: 0 0 22px; }
.crumbs { font-size: 12.5px; color: #7E90AB; margin-bottom: 4px; }
.crumbs a:hover { color: #9EC0FF; }
.dl-box { background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.14); border-radius: 16px; padding: 22px; }
.dl-box .row { display: flex; justify-content: space-between; font-size: 12.5px; color: #93A6C0; padding: 5px 0; }
.dl-box .row b { color: #E6EDF8; font-weight: 600; }
.dl-box .btn { width: 100%; margin-top: 14px; }
.dl-box code { font-size: 11px; color: #8FA8C8; word-break: break-all; }

.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.feature { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 20px; }
.feature h3 { margin: 0 0 6px; font-size: 15px; }
.feature p { margin: 0; font-size: 13px; color: var(--muted); }
.feature .num { font-size: 12px; color: var(--brand); font-weight: 700; letter-spacing: 1px; }

.changelog { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 8px 24px; }
.log-item { padding: 18px 0; border-bottom: 1px solid var(--line-2); display: grid; grid-template-columns: 120px 1fr; gap: 18px; }
.log-item:last-child { border-bottom: 0; }
.log-item .v { font-weight: 700; font-size: 14px; }
.log-item .d { font-size: 12px; color: var(--muted-2); }
.log-item ul { margin: 0; padding-left: 18px; color: var(--muted); font-size: 13.5px; }
.log-item li { margin: 3px 0; }

/* 页脚 */
footer { border-top: 1px solid var(--line); background: #fff; padding: 42px 0 28px; margin-top: 24px; }
.foot-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 30px; }
.foot-grid h4 { font-size: 13px; margin: 0 0 10px; color: var(--ink-2); }
.foot-grid a, .foot-grid p { display: block; font-size: 12.8px; color: var(--muted); margin: 0 0 7px; }
.foot-grid a:hover { color: var(--brand); }
.foot-bottom { margin-top: 28px; padding-top: 18px; border-top: 1px solid var(--line-2); display: flex; justify-content: space-between; gap: 16px; font-size: 12px; color: var(--muted-2); flex-wrap: wrap; }

.note-strip { display: flex; gap: 10px; padding: 14px 16px; border-radius: 12px; font-size: 13px; background: #EFF5FF; color: #1D4ED8; }
.note-strip.warn { background: #FFFAEB; color: #B54708; }

@media (max-width: 980px) {
  .hero-inner, .pd-hero .wrap { grid-template-columns: 1fr; gap: 34px; }
  .hero h1 { font-size: 34px; }
  .products, .shots { grid-template-columns: 1fr; }
  .principles { grid-template-columns: repeat(2, 1fr); }
  .features { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 620px) {
  .wrap { width: calc(100% - 32px); }
  .nav-links { display: none; }
  .principles, .features { grid-template-columns: 1fr; }
  .hero h1 { font-size: 28px; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .cta { padding: 28px; }
  .cta .btn { margin-left: 0; }
}

/* 步骤 */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.step-card { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 22px; }
.step-card .n { width: 28px; height: 28px; border-radius: 9px; background: var(--ink); color: #fff; display: grid; place-items: center; font-size: 13px; font-weight: 700; margin-bottom: 12px; }
.step-card h3 { margin: 0 0 6px; font-size: 15.5px; }
.step-card p { margin: 0; font-size: 13px; color: var(--muted); }

/* 规格清单 */
.spec { list-style: none; margin: 0; padding: 0; background: #fff; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; }
.spec li { display: flex; gap: 16px; padding: 13px 18px; border-bottom: 1px solid var(--line-2); font-size: 13.5px; }
.spec li:last-child { border-bottom: 0; }
.spec b { width: 110px; flex: none; color: var(--ink-2); font-weight: 600; }
.spec span { color: var(--muted); }

@media (max-width: 980px) { .steps { grid-template-columns: 1fr; } }