:root {
  --ink: #10233f;
  --ink-2: #243a58;
  --muted: #6e7e92;
  --paper: #f4f7fa;
  --white: #fff;
  --line: #dbe3ec;
  --blue: #1262d3;
  --blue-soft: #eaf3ff;
  --red: #ee3f3f;
  --yellow: #f4c542;
  --shadow: 0 20px 50px rgba(20, 46, 78, .1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: "Noto Serif SC", "Songti SC", "Microsoft YaHei", sans-serif; line-height: 1.75; }
body, button, input { -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; }
.site-wrap { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.narrow-wrap { width: min(850px, calc(100% - 40px)); }

.site-header { position: relative; z-index: 30; background: rgba(255,255,255,.96); border-bottom: 1px solid rgba(16,35,63,.1); }
.header-accent { height: 4px; background: linear-gradient(90deg, var(--red) 0 13%, var(--blue) 13% 76%, var(--yellow) 76%); }
.header-inner { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.brand { display: flex; align-items: center; gap: 13px; }
.brand-mark { width: 43px; height: 43px; display: flex; align-items: flex-end; gap: 4px; padding: 9px; border-radius: 12px; color: white; background: var(--ink); transform: rotate(-3deg); }
.brand-mark i { display: block; width: 6px; border-radius: 6px; background: currentColor; }
.brand-mark i:nth-child(1) { height: 10px; opacity: .55; }
.brand-mark i:nth-child(2) { height: 17px; opacity: .78; }
.brand-mark i:nth-child(3) { height: 25px; }
.brand-copy { display: flex; flex-direction: column; line-height: 1.2; }
.brand-copy strong { font-size: 21px; letter-spacing: .03em; }
.brand-copy small { margin-top: 5px; color: var(--muted); font-size: 11px; letter-spacing: .12em; }
.site-nav { display: flex; align-items: center; gap: 24px; font-family: "Microsoft YaHei", sans-serif; }
.site-nav ul { display: flex; align-items: center; gap: 22px; padding: 0; margin: 0; list-style: none; }
.site-nav li a { position: relative; font-size: 14px; font-weight: 700; }
.site-nav li a::after { position: absolute; content: ""; left: 0; right: 100%; bottom: -9px; height: 2px; background: var(--red); transition: right .2s; }
.site-nav li a:hover::after { right: 0; }
.header-search { display: flex; padding: 5px; background: var(--paper); border: 1px solid var(--line); border-radius: 99px; }
.header-search input { width: 145px; border: 0; outline: 0; padding: 7px 10px; background: transparent; }
.header-search button { border: 0; border-radius: 99px; padding: 7px 13px; color: white; background: var(--ink); cursor: pointer; }
.nav-toggle { display: none; border: 0; background: transparent; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2px; margin: 5px 0; background: var(--ink); }

.home-hero { position: relative; overflow: hidden; padding: 80px 0 86px; color: white; background: var(--ink); }
.home-hero::before { position: absolute; content: ""; width: 520px; height: 520px; top: -240px; right: 6%; border: 1px solid rgba(255,255,255,.1); border-radius: 50%; box-shadow: 0 0 0 70px rgba(255,255,255,.025), 0 0 0 140px rgba(255,255,255,.02); }
.hero-grid { position: relative; display: grid; grid-template-columns: 1.35fr .65fr; align-items: center; gap: 90px; }
.eyebrow, .section-heading span, .aside-kicker { color: #86b8ff; font: 700 11px/1.2 "Microsoft YaHei", sans-serif; letter-spacing: .24em; }
.hero-copy h1 { margin: 17px 0 20px; font-size: clamp(48px, 6vw, 82px); line-height: 1.08; letter-spacing: -.055em; }
.hero-copy h1 em { color: var(--yellow); font-style: normal; }
.hero-copy p { max-width: 610px; margin: 0; color: #c5d2e3; font-size: 17px; }
.hero-search { display: flex; max-width: 590px; margin-top: 34px; padding: 7px; border-radius: 8px; background: white; box-shadow: 0 18px 40px rgba(0,0,0,.23); }
.hero-search input { flex: 1; min-width: 0; padding: 13px 15px; border: 0; outline: 0; font-size: 15px; }
.hero-search button { padding: 0 23px; border: 0; color: white; background: var(--red); font-weight: 700; cursor: pointer; }
.signal-card { position: relative; min-height: 340px; padding: 34px; overflow: hidden; border: 1px solid rgba(255,255,255,.19); border-radius: 28px 8px 28px 8px; background: linear-gradient(145deg, rgba(255,255,255,.12), rgba(255,255,255,.03)); transform: rotate(3deg); }
.sim-chip { display: grid; grid-template-columns: repeat(2, 22px); gap: 5px; width: 65px; padding: 8px; border-radius: 9px; background: var(--yellow); }
.sim-chip span { height: 15px; border: 1px solid rgba(16,35,63,.4); border-radius: 3px; }
.signal-copy { position: absolute; left: 34px; bottom: 38px; }
.signal-copy small { display: block; color: #a9bad0; font-family: "Microsoft YaHei"; letter-spacing: .18em; }
.signal-copy strong { display: block; margin-top: 7px; font-size: 36px; line-height: 1.18; }
.signal-bars { position: absolute; right: 29px; bottom: 36px; display: flex; align-items: flex-end; gap: 6px; }
.signal-bars i { width: 8px; background: #fff; border-radius: 5px; }
.signal-bars i:nth-child(1) { height: 14px; opacity: .35; }.signal-bars i:nth-child(2) { height: 24px; opacity: .5; }.signal-bars i:nth-child(3) { height: 36px; opacity: .72; }.signal-bars i:nth-child(4) { height: 50px; }

.content-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 60px; padding-top: 72px; padding-bottom: 90px; }
.section-heading { display: flex; justify-content: space-between; align-items: flex-end; gap: 40px; margin-bottom: 30px; padding-bottom: 20px; border-bottom: 1px solid var(--line); }
.section-heading span { color: var(--blue); }
.section-heading h1, .section-heading h2 { margin: 5px 0 0; font-size: 30px; line-height: 1.25; }
.section-heading p { max-width: 430px; margin: 0; color: var(--muted); font-size: 14px; }
.article-list { border-top: 3px solid var(--ink); }
.article-row { display: grid; grid-template-columns: 72px 1fr; gap: 20px; padding: 30px 4px; border-bottom: 1px solid var(--line); }
.article-index { color: #b5c0cc; font: 800 26px/1 "Georgia", serif; }
.article-meta { display: flex; gap: 16px; color: var(--muted); font: 12px "Microsoft YaHei", sans-serif; }
.article-meta a { color: var(--red); font-weight: 700; }
.article-row h3 { margin: 10px 0 9px; font-size: 22px; line-height: 1.45; }
.article-row h3 a { transition: color .2s; }
.article-row h3 a:hover { color: var(--blue); }
.article-row p { margin: 0; color: #596b81; font-size: 14px; }
.read-link { display: inline-flex; gap: 8px; margin-top: 13px; color: var(--blue); font: 700 13px "Microsoft YaHei", sans-serif; }
.read-link span { transition: transform .2s; }.read-link:hover span { transform: translateX(5px); }
.home-aside { padding-top: 74px; }
.aside-card { position: sticky; top: 30px; padding: 32px; color: white; background: var(--blue); box-shadow: var(--shadow); }
.aside-card h3 { margin: 10px 0 28px; font-size: 28px; line-height: 1.35; }
.aside-card ol { padding: 0; margin: 0; list-style: none; }
.aside-card li { display: flex; align-items: center; gap: 15px; padding: 15px 0; border-top: 1px solid rgba(255,255,255,.2); }
.aside-card li b { color: #9dc6ff; font: 700 12px "Georgia"; }
.aside-card li span { font-size: 14px; }
.pagebar { display: flex; gap: 8px; justify-content: center; padding-top: 35px; }
.pagebar a, .pagebar span { min-width: 38px; padding: 7px 11px; text-align: center; border: 1px solid var(--line); background: white; }
.pagebar .now-page { color: white; border-color: var(--ink); background: var(--ink); }

.reading-progress { position: fixed; z-index: 50; top: 0; left: 0; right: 0; height: 3px; pointer-events: none; }
.reading-progress i { display: block; width: 0; height: 100%; background: var(--red); }
.article-header {
  width: min(1084px, calc(100% - 40px));
  padding-top: 72px;
  padding-bottom: 42px;
}
.breadcrumbs { display: flex; gap: 9px; align-items: center; color: var(--muted); font: 13px "Microsoft YaHei", sans-serif; }
.breadcrumbs a:hover { color: var(--blue); }
.article-header h1 { max-width: 800px; margin: 22px 0 17px; font-size: clamp(34px, 5vw, 54px); line-height: 1.25; letter-spacing: -.035em; }
.article-byline { display: flex; gap: 24px; color: var(--muted); font: 13px "Microsoft YaHei", sans-serif; }
.quick-answer { position: relative; max-width: 800px; margin-top: 34px; padding: 27px 31px 27px 108px; border-left: 4px solid var(--red); background: white; box-shadow: 0 12px 35px rgba(21,49,81,.07); }
.quick-answer > span { position: absolute; left: 25px; top: 29px; color: var(--red); font: 800 12px "Microsoft YaHei", sans-serif; letter-spacing: .12em; }
.quick-answer p { margin: 0; color: var(--ink-2); font-size: 17px; line-height: 1.9; }
.article-shell { width: min(1084px, calc(100% - 40px)); display: grid; grid-template-columns: minmax(0, 800px) 230px; gap: 54px; align-items: start; padding-bottom: 70px; }
.article-content { min-width: 0; overflow: hidden; padding: 45px 55px; background: white; box-shadow: 0 15px 50px rgba(21,49,81,.07); font-size: 17px; line-height: 2; overflow-wrap: break-word; }
.article-content > :first-child { margin-top: 0; }
.article-content h1 { margin: 0 0 24px; font-size: 32px; line-height: 1.45; }
.article-content h2 { margin: 42px 0 18px; padding-left: 17px; border-left: 4px solid var(--blue); font-size: 28px; line-height: 1.45; }
.article-content h3 { margin-top: 33px; font-size: 22px; }
.article-content p { margin: 1.25em 0; }
.article-content a { color: var(--blue); border-bottom: 1px solid #9ac2f8; }
.article-content img { display: block; margin: 28px auto; border-radius: 6px; }
.article-content iframe, .article-content video, .article-content embed, .article-content object { max-width: 100%; }
.article-content blockquote { margin: 28px 0; padding: 17px 23px; color: #4b607a; border-left: 4px solid var(--yellow); background: #f8fafc; }
.article-content table { width: 100%; border-collapse: collapse; font-size: 14px; }
.article-content td, .article-content th { padding: 10px; border: 1px solid var(--line); }
.article-tags { display: flex; flex-wrap: wrap; align-items: center; gap: 9px; margin-top: 40px; padding-top: 25px; border-top: 1px solid var(--line); font: 13px "Microsoft YaHei", sans-serif; }
.article-tags span { color: var(--muted); }.article-tags a { padding: 4px 10px; border: 0; border-radius: 4px; background: var(--blue-soft); }
.article-neighbors { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 30px; }
.article-neighbors a { display: flex; flex-direction: column; padding: 18px; border: 1px solid var(--line); color: inherit; }
.article-neighbors small { color: var(--muted); }.article-neighbors strong { margin-top: 5px; font-size: 14px; line-height: 1.55; }
.article-rail { position: sticky; top: 30px; }
.rail-card { padding: 23px; border-top: 3px solid var(--yellow); background: var(--ink); color: white; }
.rail-card span { color: var(--yellow); font: 700 12px "Microsoft YaHei"; letter-spacing: .14em; }
.rail-card p { margin: 13px 0 0; color: #c6d2e1; font-size: 13px; line-height: 1.8; }

.offer-section { padding: 72px 0 82px; color: white; background: var(--ink); scroll-margin-top: 18px; }
.offer-heading { border-color: rgba(255,255,255,.18); }.offer-heading h2 { color: white; }.offer-heading p { color: #aebdd0; }
.offer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.offer-card { position: relative; min-width: 0; padding: 25px 21px 22px; overflow: hidden; border: 1px solid rgba(255,255,255,.15); background: rgba(255,255,255,.055); transition: transform .22s, background .22s; }
.offer-card:hover { transform: translateY(-6px); background: rgba(255,255,255,.1); }
.offer-no { position: absolute; right: 17px; top: 13px; color: rgba(255,255,255,.26); font: 700 24px "Georgia"; }
.offer-icon { width: 58px; height: 58px; margin-bottom: 19px; padding: 3px; border-radius: 12px; background: white; }
.offer-icon img { width: 100%; height: 100%; object-fit: cover; border-radius: 9px; }
.offer-card h3 { margin: 0; padding-right: 12px; font-size: 17px; line-height: 1.55; }
.offer-card p { min-height: 70px; margin: 10px 0 18px; color: #b9c7d8; font-size: 13px; line-height: 1.65; }
.offer-action { display: flex; justify-content: space-between; padding-top: 15px; border-top: 1px solid rgba(255,255,255,.15); color: var(--yellow); font: 700 12px "Microsoft YaHei"; }
.related-section { padding: 78px 0 95px; }
.narrow-related { max-width: 980px; }
.related-list { border-top: 3px solid var(--ink); }
.related-list a { display: grid; grid-template-columns: 55px 1fr 95px; align-items: center; gap: 18px; padding: 21px 4px; border-bottom: 1px solid var(--line); }
.related-list a > span { color: #aab7c6; font: 700 17px "Georgia"; }
.related-list strong { font-size: 16px; }.related-list time { color: var(--muted); font: 12px "Microsoft YaHei"; text-align: right; }
.related-list a:hover strong { color: var(--blue); }
.mobile-card-entry { display: none; }

.page-content .article-content { margin-bottom: 80px; }
.search-page { padding-top: 70px; padding-bottom: 90px; max-width: 900px; }
.site-footer { padding: 45px 0; color: #b7c3d1; background: #0a192d; font-family: "Microsoft YaHei", sans-serif; }
.footer-inner { display: flex; justify-content: space-between; gap: 30px; align-items: end; }
.site-footer strong { color: white; font-size: 18px; }.site-footer p { margin: 5px 0 0; font-size: 12px; }
.footer-meta { display: flex; gap: 17px; font-size: 12px; }
.not-found { min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 30px; text-align: center; }
.not-found > span { color: var(--red); font: 700 11px "Microsoft YaHei"; letter-spacing: .2em; }
.not-found h1 { margin: 13px 0 5px; font-size: 42px; }.not-found p { color: var(--muted); }.not-found > a { margin-top: 17px; padding: 10px 22px; color: white; background: var(--ink); }
.not-found-signal { display: flex; align-items: flex-end; gap: 7px; height: 70px; margin-bottom: 25px; }
.not-found-signal i { display: block; width: 12px; background: #b8c4d1; }.not-found-signal i:nth-child(1){height:15px}.not-found-signal i:nth-child(2){height:30px}.not-found-signal i:nth-child(3){height:47px}.not-found-signal i:nth-child(4){height:65px;background:var(--red)}

@media (max-width: 960px) {
  .site-nav { display: none; position: absolute; top: 82px; left: 20px; right: 20px; padding: 22px; background: white; box-shadow: var(--shadow); }
  .site-nav.is-open { display: block; }
  .site-nav ul { display: block; }.site-nav li { padding: 9px 0; }
  .header-search { margin-top: 15px; }.header-search input { width: 100%; }
  .nav-toggle { display: block; }
  .hero-grid { grid-template-columns: 1fr; }.signal-card { display: none; }
  .content-layout { grid-template-columns: 1fr; }.home-aside { display: none; }
  .article-header, .article-shell { width: min(800px, calc(100% - 40px)); }
  .article-shell { grid-template-columns: minmax(0, 800px); }.article-rail { display: none; }
  .offer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .site-wrap, .narrow-wrap { width: min(100% - 28px, 1180px); }
  .header-inner { min-height: 70px; }.site-nav { top: 70px; left: 14px; right: 14px; }
  .brand-copy strong { font-size: 18px; }.brand-copy small { display: none; }.brand-mark { width: 38px; height: 38px; }
  .home-hero { padding: 55px 0 60px; }.hero-copy h1 { font-size: 46px; }.hero-copy p { font-size: 15px; }
  .hero-search { margin-top: 25px; }.hero-search button { padding: 0 15px; }
  .content-layout { padding-top: 48px; padding-bottom: 65px; }
  .section-heading { display: block; }.section-heading h1, .section-heading h2 { font-size: 26px; }.section-heading p { margin-top: 12px; }
  .article-row { grid-template-columns: 42px 1fr; gap: 10px; padding: 25px 0; }.article-index { font-size: 19px; }
  .article-row h3 { font-size: 19px; }.article-row p { display: -webkit-box; overflow: hidden; -webkit-box-orient: vertical; -webkit-line-clamp: 3; }
  .article-header { width: min(100% - 28px, 800px); padding-top: 45px; padding-bottom: 26px; }.article-header h1 { margin-top: 17px; font-size: 34px; }
  .quick-answer { margin-top: 26px; padding: 55px 21px 20px; }.quick-answer > span { left: 21px; top: 18px; }.quick-answer p { font-size: 15px; }
  .article-shell { width: 100%; padding-bottom: 45px; }.article-content { padding: 29px 20px; font-size: 16px; box-shadow: none; }
  .article-content h1 { font-size: 27px; }.article-content h2 { font-size: 23px; }.article-content h3 { font-size: 20px; }
  .article-neighbors { grid-template-columns: 1fr; }
  .offer-section { padding: 54px 0 68px; }.offer-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .offer-card { padding: 19px 15px; }.offer-no { font-size: 18px; }.offer-icon { width: 50px; height: 50px; }
  .offer-card h3 { font-size: 15px; }.offer-card p { min-height: 78px; font-size: 12px; }
  .related-section { padding: 58px 0 90px; }.related-list a { grid-template-columns: 35px 1fr; }.related-list time { display: none; }
  .mobile-card-entry { position: fixed; z-index: 45; left: 14px; right: 14px; bottom: max(12px, env(safe-area-inset-bottom)); display: flex; justify-content: space-between; align-items: center; padding: 14px 18px; color: white; border-radius: 8px; background: var(--red); box-shadow: 0 12px 35px rgba(190,30,30,.3); font: 700 14px "Microsoft YaHei"; }
  .site-footer { padding-bottom: 88px; }.footer-inner { display: block; }.footer-meta { margin-top: 20px; flex-direction: column; gap: 5px; }
}