/* 万映官网 · 内容页共享样式
   与 index.html 保持同一套设计令牌，深色高端极简风格 */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --c-bg:       #050510;
  --c-bg2:      #080818;
  --c-bg3:      #0c0c22;
  --c-surface:  rgba(255,255,255,.035);
  --c-surface2: rgba(255,255,255,.065);
  --c-border:   rgba(255,255,255,.08);
  --c-border2:  rgba(130,100,255,.25);

  --c-p:     #7c6bff;
  --c-p2:    #5548e0;
  --c-p3:    #a89bff;
  --c-cyan:  #00e5ff;
  --c-pink:  #ff4daa;
  --c-gold:  #ffd166;
  --c-green: #00d97e;
  --c-red:   #ff5577;

  --c-t:     #dde0f5;
  --c-t2:    #8888bb;
  --c-t3:    #55557a;
  --c-white: #fff;

  --maxw: 1120px;
  --nav-h: 64px;
  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 20px;
}

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  background: var(--c-bg);
  color: var(--c-t);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: var(--c-p3); text-decoration: none; transition: color .2s; }
a:hover { color: var(--c-white); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ── 顶部导航 ── */
.nav {
  position: sticky; top: 0; z-index: 50;
  height: var(--nav-h);
  background: rgba(5,5,16,.88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--c-border);
}
.nav-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 24px;
  height: 100%; display: flex; align-items: center; gap: 28px;
}
.nav-logo { display: flex; align-items: center; gap: 10px; font-size: 19px; font-weight: 600; color: var(--c-white); flex-shrink: 0; }
.nav-logo .mark {
  width: 30px; height: 30px; border-radius: 9px;
  background: linear-gradient(135deg, var(--c-p), var(--c-cyan));
  display: grid; place-items: center;
  font-size: 15px; font-weight: 700; color: #fff;
}
.nav-links { display: flex; gap: 22px; margin-left: auto; align-items: center; font-size: 14.5px; }
.nav-links a { color: var(--c-t2); }
.nav-links a:hover { color: var(--c-white); }
.nav-cta {
  padding: 8px 18px; border-radius: 999px;
  background: linear-gradient(135deg, var(--c-p), var(--c-p2));
  color: var(--c-white) !important; font-weight: 500;
}

/* ── 面包屑 ── */
.crumb { max-width: var(--maxw); margin: 0 auto; padding: 20px 24px 0; font-size: 13px; color: var(--c-t3); }
.crumb a { color: var(--c-t3); }
.crumb a:hover { color: var(--c-p3); }
.crumb span { margin: 0 8px; opacity: .5; }

/* ── 页头 ── */
.page-head { padding: 44px 0 36px; border-bottom: 1px solid var(--c-border); }
.eyebrow {
  display: inline-block; font-size: 12.5px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--c-p3); margin-bottom: 14px;
  padding: 5px 13px; border: 1px solid var(--c-border2); border-radius: 999px;
  background: rgba(124,107,255,.07);
}
h1 {
  font-size: clamp(28px, 4.2vw, 44px); line-height: 1.25; font-weight: 600;
  color: var(--c-white); letter-spacing: -.02em;
}
h1 .grad {
  background: linear-gradient(135deg, var(--c-p3), var(--c-cyan));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lede { margin-top: 18px; font-size: 17.5px; color: var(--c-t2); max-width: 860px; }
.lede strong, .page-head strong { color: var(--c-t); font-weight: 500; }
.page-updated {
  margin-top: 16px; font-size: 12.5px; color: var(--c-t3);
  letter-spacing: .02em; display: flex; align-items: center; gap: 8px;
}
.page-updated::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%;
  background: var(--c-p3); box-shadow: 0 0 8px rgba(168,155,255,.8); flex-shrink: 0;
}

/* ── 正文区块 ── */
main { padding-bottom: 60px; }
.sec { padding: 56px 0 0; }
.sec-label {
  font-size: 12.5px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--c-p3); margin-bottom: 10px;
}
h2 {
  font-size: clamp(22px, 3vw, 31px); font-weight: 600; color: var(--c-white);
  line-height: 1.35; letter-spacing: -.01em; margin-bottom: 14px;
}
h3 { font-size: 19px; font-weight: 600; color: var(--c-white); margin-bottom: 10px; line-height: 1.5; }
h4 { font-size: 16px; font-weight: 600; color: var(--c-t); margin-bottom: 8px; }
p { margin-bottom: 14px; color: var(--c-t); }
.sec > .wrap > p, .sec p.muted { color: var(--c-t2); }
p:last-child { margin-bottom: 0; }
strong { color: var(--c-white); font-weight: 500; }

/* ── 卡片网格 ── */
.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(215px, 1fr)); }

.card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  padding: 24px;
  transition: border-color .25s, transform .25s;
}
.card:hover { border-color: var(--c-border2); transform: translateY(-2px); }
.card .ico {
  width: 42px; height: 42px; border-radius: 12px; margin-bottom: 15px;
  background: rgba(124,107,255,.12);
  border: 1px solid var(--c-border2);
  display: grid; place-items: center; font-size: 20px;
}
.card p { color: var(--c-t2); font-size: 15px; margin-bottom: 0; }
.card ul { margin-top: 12px; }
.card ul li {
  position: relative; padding-left: 18px; margin-bottom: 7px;
  font-size: 14.5px; color: var(--c-t2);
}
.card ul li::before {
  content: ""; position: absolute; left: 0; top: 10px;
  width: 5px; height: 5px; border-radius: 50%; background: var(--c-p3);
}

/* ── 数据条 ── */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 1px; background: var(--c-border); border: 1px solid var(--c-border); border-radius: var(--r-md); overflow: hidden; }
.stat { background: var(--c-bg2); padding: 24px 20px; text-align: center; }
.stat b { display: block; font-size: 30px; font-weight: 600; color: var(--c-white); line-height: 1.2; letter-spacing: -.02em; }
.stat b em { font-style: normal; font-size: 15px; color: var(--c-p3); margin-left: 3px; }
.stat span { display: block; margin-top: 7px; font-size: 13.5px; color: var(--c-t2); }

/* ── 表格 ── */
.tbl-wrap { overflow-x: auto; border: 1px solid var(--c-border); border-radius: var(--r-md); background: var(--c-surface); }
table { width: 100%; border-collapse: collapse; font-size: 14.5px; min-width: 560px; }
th, td { padding: 13px 16px; text-align: left; border-bottom: 1px solid var(--c-border); vertical-align: top; }
th { background: rgba(255,255,255,.03); color: var(--c-white); font-weight: 500; font-size: 14px; white-space: nowrap; }
td { color: var(--c-t2); }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover td { background: rgba(124,107,255,.05); }
td strong, td .yes { color: var(--c-green); }
td .no { color: var(--c-red); }
.tbl-note { margin-top: 10px; font-size: 13px; color: var(--c-t3); }

/* ── 步骤 ── */
.steps { counter-reset: s; display: grid; gap: 14px; }
.step {
  counter-increment: s; position: relative;
  padding: 20px 22px 20px 68px;
  background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--r-md);
}
.step::before {
  content: counter(s); position: absolute; left: 22px; top: 20px;
  width: 28px; height: 28px; border-radius: 50%;
  background: linear-gradient(135deg, var(--c-p), var(--c-p2));
  color: #fff; font-size: 14px; font-weight: 600;
  display: grid; place-items: center;
}
.step h4 { margin-bottom: 5px; }
.step p { color: var(--c-t2); font-size: 15px; margin-bottom: 0; }

/* ── FAQ ── */
.faq { display: grid; gap: 10px; }
.faq details {
  background: var(--c-surface); border: 1px solid var(--c-border);
  border-radius: var(--r-sm); overflow: hidden;
}
.faq details[open] { border-color: var(--c-border2); }
.faq summary {
  cursor: pointer; padding: 17px 22px; font-size: 16px; font-weight: 500;
  color: var(--c-white); list-style: none; position: relative; padding-right: 52px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 22px; top: 50%; transform: translateY(-50%);
  font-size: 20px; color: var(--c-p3); font-weight: 400;
}
.faq details[open] summary::after { content: "−"; }
.faq .ans { padding: 0 22px 20px; color: var(--c-t2); font-size: 15px; }
.faq .ans p { color: var(--c-t2); margin-bottom: 10px; }
.faq .ans p:last-child { margin-bottom: 0; }

/* ── 高亮块 ── */
.hl {
  background: linear-gradient(135deg, rgba(124,107,255,.10), rgba(0,229,255,.05));
  border: 1px solid var(--c-border2);
  border-radius: var(--r-md); padding: 26px 28px;
}
.hl h3 { margin-bottom: 12px; }
.hl p:last-child { margin-bottom: 0; }

.quote {
  border-left: 3px solid var(--c-p); padding: 4px 0 4px 20px;
  margin: 18px 0; font-size: 17px; color: var(--c-t); font-style: normal;
}
.quote strong { color: var(--c-gold); }

/* ── CTA ── */
.cta {
  margin-top: 60px; padding: 46px 32px; text-align: center;
  background: linear-gradient(135deg, rgba(124,107,255,.13), rgba(0,229,255,.05));
  border: 1px solid var(--c-border2); border-radius: var(--r-lg);
}
.cta h2 { margin-bottom: 12px; }
.cta p { color: var(--c-t2); max-width: 640px; margin: 0 auto 26px; }
.btns { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 28px; border-radius: 999px; font-size: 15.5px; font-weight: 500;
  transition: transform .2s, opacity .2s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: linear-gradient(135deg, var(--c-p), var(--c-p2)); color: #fff !important; }
.btn-ghost { border: 1px solid var(--c-border2); color: var(--c-t) !important; }
.btn-ghost:hover { border-color: var(--c-p3); color: var(--c-white) !important; }

/* ── 相关阅读 ── */
.related { margin-top: 56px; padding-top: 32px; border-top: 1px solid var(--c-border); }
.related h2 { font-size: 19px; margin-bottom: 18px; }
.related-links { display: flex; flex-wrap: wrap; gap: 10px; }
.related-links a {
  padding: 9px 17px; border: 1px solid var(--c-border); border-radius: 999px;
  font-size: 14.5px; color: var(--c-t2); background: var(--c-surface);
}
.related-links a:hover { border-color: var(--c-p3); color: var(--c-white); }

/* ── 页脚 ── */
footer { border-top: 1px solid var(--c-border); background: var(--c-bg2); padding: 52px 0 30px; margin-top: 70px; }
.foot-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px; }
.foot-brand .nav-logo { margin-bottom: 14px; }
.foot-brand p { color: var(--c-t2); font-size: 14.5px; max-width: 300px; }
.foot-brand .contact-mini { margin-top: 16px; font-size: 14px; color: var(--c-t2); line-height: 2; }
.foot-brand .contact-mini b { color: var(--c-t3); font-weight: 400; margin-right: 6px; }
.foot-col h4 { font-size: 14px; color: var(--c-white); margin-bottom: 14px; letter-spacing: .04em; }
.foot-col a { display: block; font-size: 14.5px; color: var(--c-t2); margin-bottom: 9px; }
.foot-col a:hover { color: var(--c-white); }
.foot-bottom {
  margin-top: 38px; padding-top: 22px; border-top: 1px solid var(--c-border);
  display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between;
  font-size: 13px; color: var(--c-t3);
}
.foot-bottom a { color: var(--c-t3); }

/* ── 响应式 ── */
@media (max-width: 860px) {
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; }
}
@media (max-width: 520px) {
  .foot-grid { grid-template-columns: 1fr; }
  .sec { padding-top: 42px; }
  .card { padding: 20px; }
}