/* ============================================================
   昆山纬亚智能科技 · PCB抄板 / SMT贴片加工
   style.css — 浅色主题 · 科技蓝 + PCB绿
   v2：强化可读性、视觉层次与业务转化
   ============================================================ */

/* ---------- 1. Design Tokens ---------- */
:root {
  /* 文字 */
  --c-ink: #0a1728;
  --c-ink-2: #37485c;
  --c-ink-3: #64748b;
  --c-ink-4: #94a3b8;

  /* 背景 */
  --c-bg: #ffffff;
  --c-bg-soft: #f6f9fd;
  --c-bg-soft2: #edf3fa;
  --c-bg-deep: #0a1728;
  --c-bg-deep2: #12293f;

  /* 主色 */
  --c-brand: #0f5bd4;
  --c-brand-d: #0b439c;
  --c-brand-l: #e6efff;
  --c-brand-l2: #f2f7ff;

  /* 强调 */
  --c-green: #00a86b;
  --c-green-d: #008257;
  --c-green-l: #e2f7ee;
  --c-gold: #d1971f;
  --c-gold-l: #fdf6e7;

  /* 线条 */
  --c-line: #e2e9f2;
  --c-line-2: #d0dae6;

  /* 圆角 */
  --r-s: 8px;
  --r-m: 12px;
  --r-l: 18px;
  --r-xl: 26px;

  /* 阴影 */
  --sh-1: 0 1px 3px rgba(10, 23, 40, .06);
  --sh-2: 0 6px 20px rgba(10, 23, 40, .08);
  --sh-3: 0 14px 40px rgba(10, 23, 40, .12);
  --sh-4: 0 24px 60px rgba(10, 23, 40, .16);
  --sh-brand: 0 10px 26px rgba(15, 91, 212, .28);
  --sh-green: 0 10px 26px rgba(0, 168, 107, .28);

  /* 布局 */
  --wrap: 1240px;
  --gut: 28px;
  --hdr: 70px;

  /* 字体 */
  --f-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  --f-num: "DIN Alternate", "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
}

/* ---------- 2. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--f-sans);
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--c-ink-2);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
h1, h2, h3, h4 {
  margin: 0 0 .6em;
  color: var(--c-ink);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -.015em;
}
h1 { font-size: 32px; }
h2 { font-size: 27px; }
h3 { font-size: 20px; }
h4 { font-size: 16.5px; }
p { margin: 0 0 1.15em; }
a { color: var(--c-brand); text-decoration: none; transition: color .18s, border-color .18s, background .18s; }
a:hover { color: var(--c-brand-d); }
img, svg { max-width: 100%; }
img { height: auto; display: block; border: 0; }
ul, ol { margin: 0 0 1.15em; padding-left: 1.4em; }
li { margin-bottom: .4em; }
table { width: 100%; border-collapse: collapse; }
strong, b { color: var(--c-ink); font-weight: 600; }
hr { border: 0; border-top: 1px solid var(--c-line); margin: 32px 0; }
button { font-family: inherit; }

/* ---------- 3. Layout ---------- */
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gut); }
.wrap-narrow { max-width: 880px; }
.sec { padding: 76px 0; }
.sec-sm { padding: 48px 0; }
.sec-soft { background: var(--c-bg-soft); }
.sec-soft2 { background: var(--c-bg-soft2); }
.sec-grad { background: linear-gradient(180deg, #f6f9fd 0%, #ffffff 60%); }

.grid { display: grid; gap: 24px; }
.g-2 { grid-template-columns: repeat(2, 1fr); }
.g-3 { grid-template-columns: repeat(3, 1fr); }
.g-4 { grid-template-columns: repeat(4, 1fr); }
.g-main { grid-template-columns: minmax(0, 1fr) 322px; gap: 46px; }

/* ---------- 4. Header ---------- */
.hdr {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .95);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--c-line);
}
.hdr-top { background: var(--c-bg-deep); color: #93a5b8; font-size: 12.5px; line-height: 1; }
.hdr-top .wrap { display: flex; align-items: center; justify-content: space-between; min-height: 36px; gap: 16px; flex-wrap: wrap; }
.hdr-top a { color: #93a5b8; }
.hdr-top a:hover { color: #fff; }
.hdr-city { display: flex; align-items: center; gap: 13px; flex-wrap: wrap; }
.hdr-city b { color: #fff; font-weight: 500; }
.hdr-city span { opacity: .5; }
.hdr-links { display: flex; align-items: center; gap: 14px; }
.hdr-links .dot { opacity: .3; }

.hdr-main .wrap { display: flex; align-items: center; gap: 26px; height: var(--hdr); }
.logo { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.logo-mark {
  width: 42px; height: 42px; border-radius: 11px; flex: 0 0 auto;
  background: linear-gradient(150deg, #1a6ee0, #0b3f96);
  display: grid; place-items: center;
  box-shadow: 0 5px 14px rgba(15, 91, 212, .32);
}
.logo-mark svg { width: 24px; height: 24px; }
.logo-txt { line-height: 1.28; }
.logo-txt b { display: block; font-size: 17px; color: var(--c-ink); }
.logo-txt span { display: block; font-size: 10.5px; color: var(--c-ink-4); letter-spacing: .16em; }

.nav { margin-left: auto; }
.nav > ul { display: flex; align-items: center; gap: 2px; margin: 0; padding: 0; list-style: none; }
.nav > ul > li { position: relative; list-style: none; margin: 0; }
.nav > ul > li > a {
  display: flex; align-items: center; gap: 5px;
  padding: 9px 13px; border-radius: var(--r-s);
  font-size: 14.5px; font-weight: 500; color: var(--c-ink); white-space: nowrap;
}
.nav > ul > li > a:hover, .nav > ul > li:hover > a { color: var(--c-brand); background: var(--c-brand-l2); }
.nav > ul > li > a .caret { width: 9px; height: 9px; opacity: .5; transition: transform .2s; }
.nav > ul > li:hover > a .caret { transform: rotate(180deg); }
.nav > ul > li.is-cur > a { color: var(--c-brand); }
.nav > ul > li.is-cur > a::after {
  content: ""; position: absolute; left: 13px; right: 13px; bottom: 0;
  height: 2.5px; background: var(--c-brand); border-radius: 3px 3px 0 0;
}
.nav > ul > li.btn-cta > a {
  background: var(--c-brand); color: #fff; padding: 10px 20px; margin-left: 10px;
  box-shadow: var(--sh-brand);
}
.nav > ul > li.btn-cta > a:hover { background: var(--c-brand-d); color: #fff; box-shadow: 0 12px 30px rgba(15,91,212,.38); }

.drop {
  position: absolute; top: 100%; left: 50%; transform: translateX(-50%) translateY(8px);
  min-width: 210px; padding: 10px;
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--r-m);
  box-shadow: var(--sh-3); opacity: 0; visibility: hidden; transition: .2s; pointer-events: none;
}
.nav > ul > li:hover .drop { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(4px); pointer-events: auto; }
.drop-wide { min-width: 640px; padding: 20px; }
.drop-cols { display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px 28px; }
.drop-grp { margin-bottom: 12px; }
.drop-grp > i {
  display: block; font-style: normal; font-size: 11.5px; font-weight: 700;
  letter-spacing: .1em; color: var(--c-ink-4); padding: 0 10px 6px;
}
.drop a { display: block; padding: 7px 10px; border-radius: var(--r-s); font-size: 13.5px; color: var(--c-ink-2); line-height: 1.55; }
.drop a:hover { background: var(--c-brand-l2); color: var(--c-brand); }
.drop-foot {
  margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--c-line);
  display: flex; justify-content: space-between; align-items: center; font-size: 13px;
}
.nav-toggle { display: none; margin-left: auto; width: 42px; height: 42px; border: 1px solid var(--c-line); border-radius: var(--r-s); background: #fff; cursor: pointer; padding: 0; }
.nav-toggle i { display: block; width: 18px; height: 2px; margin: 4px auto; background: var(--c-ink); border-radius: 2px; }

/* ---------- 5. Hero ---------- */
.hero { position: relative; overflow: hidden; background: var(--c-bg-deep); color: #c3d0dd; }
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 80% 70% at 15% 25%, #000 15%, transparent 72%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 15% 25%, #000 15%, transparent 72%);
}
.hero::after {
  content: ""; position: absolute; right: -160px; top: -140px;
  width: 640px; height: 640px; border-radius: 50%;
  background: radial-gradient(circle, rgba(0,168,107,.24), transparent 62%);
}
.hero .wrap { position: relative; z-index: 2; padding-top: 58px; padding-bottom: 58px; }
.hero-in { display: grid; grid-template-columns: 1.12fr .88fr; gap: 44px; align-items: center; }
.hero-label {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 15px; margin-bottom: 20px;
  border: 1px solid rgba(255,255,255,.2); border-radius: 100px;
  font-size: 12.5px; letter-spacing: .05em; color: #8fe3c2; background: rgba(0,168,107,.12);
}
.hero-label em { font-style: normal; width: 6px; height: 6px; border-radius: 50%; background: #34e39d; box-shadow: 0 0 0 4px rgba(52,227,157,.2); }
.hero h1 { font-size: 40px; line-height: 1.3; color: #fff; margin-bottom: 18px; }
.hero h1 mark { background: none; color: #4fe0a6; }
.hero h1 b { color: #fff; font-weight: 700; }
.hero-sub { font-size: 16.5px; line-height: 1.95; color: #a9bacb; margin-bottom: 28px; }
.hero-sub strong { color: #eaf1f8; font-weight: 600; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 26px; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 10px 20px; font-size: 13.5px; color: #93a7ba; }
.hero-trust span { display: inline-flex; align-items: center; gap: 6px; }
.hero-trust svg { width: 15px; height: 15px; color: #34e39d; flex: 0 0 auto; }
.hero-art { position: relative; }
.hero-art svg { width: 100%; height: auto; filter: drop-shadow(0 22px 46px rgba(0,0,0,.45)); }
.hero-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: rgba(255,255,255,.11); border: 1px solid rgba(255,255,255,.11);
  border-radius: var(--r-m); overflow: hidden; margin-top: 44px;
}
.hero-stats div { background: rgba(7,17,30,.6); padding: 20px 24px; }
.hero-stats b { display: block; font-family: var(--f-num); font-size: 32px; line-height: 1.15; color: #fff; letter-spacing: -.02em; }
.hero-stats b i { font-style: normal; font-size: 15px; color: #6fe0b1; margin-left: 2px; }
.hero-stats span { font-size: 13px; color: #8b9dae; }

/* 页面头（内页） */
.phead { position: relative; overflow: hidden; background: linear-gradient(120deg, #0b1f38, #103b66 60%, #0d3153); color: #bccbd9; }
.phead::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(90deg, #000, transparent 72%);
  -webkit-mask-image: linear-gradient(90deg, #000, transparent 72%);
}
.phead .wrap { position: relative; z-index: 2; padding-top: 44px; padding-bottom: 44px; }
.phead h1 { color: #fff; font-size: 34px; margin-bottom: 12px; }
.phead .lead { font-size: 16px; color: #a8bacb; max-width: 48em; margin: 0; }
.phead-cta { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 22px; }

/* ---------- 6. Breadcrumb ---------- */
.crumb { background: var(--c-bg-soft); border-bottom: 1px solid var(--c-line); font-size: 13px; }
.crumb ol { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 0; padding: 11px 0; list-style: none; }
.crumb li { margin: 0; color: var(--c-ink-3); }
.crumb li::after { content: "/"; margin-left: 8px; color: var(--c-ink-4); }
.crumb li:last-child::after { content: ""; }
.crumb li:last-child { color: var(--c-ink); font-weight: 500; }
.crumb a { color: var(--c-ink-3); }
.crumb a:hover { color: var(--c-brand); }

/* ---------- 7. Section head ---------- */
.shead { margin-bottom: 40px; }
.shead-c { text-align: center; max-width: 760px; margin-left: auto; margin-right: auto; }
.shead-tag {
  display: inline-block; margin-bottom: 12px;
  font-size: 12px; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; color: var(--c-green);
}
.shead-tag.b { color: var(--c-brand); }
.shead h2 { font-size: 30px; margin-bottom: 14px; }
.shead p { font-size: 16px; color: var(--c-ink-3); margin: 0; }

/* ---------- 8. Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 28px; border-radius: var(--r-s);
  font-size: 15px; font-weight: 600; border: 1px solid transparent; cursor: pointer;
  transition: .2s; white-space: nowrap;
}
.btn svg { width: 16px; height: 16px; flex: 0 0 auto; }
.btn-p { background: var(--c-brand); color: #fff; box-shadow: var(--sh-brand); }
.btn-p:hover { background: var(--c-brand-d); color: #fff; transform: translateY(-2px); box-shadow: 0 14px 32px rgba(15,91,212,.38); }
.btn-g { background: var(--c-green); color: #fff; box-shadow: var(--sh-green); }
.btn-g:hover { background: var(--c-green-d); color: #fff; transform: translateY(-2px); box-shadow: 0 14px 32px rgba(0,168,107,.38); }
.btn-o { background: transparent; color: #fff; border-color: rgba(255,255,255,.38); }
.btn-o:hover { background: rgba(255,255,255,.12); color: #fff; border-color: rgba(255,255,255,.7); }
.btn-oo { background: #fff; color: var(--c-brand); border-color: var(--c-line-2); }
.btn-oo:hover { border-color: var(--c-brand); color: var(--c-brand-d); background: var(--c-brand-l2); transform: translateY(-2px); box-shadow: var(--sh-2); }
.btn-sm { padding: 9px 20px; font-size: 14px; }
.btn-lg { padding: 16px 36px; font-size: 16.5px; border-radius: 10px; }
.btn-block { width: 100%; }

/* ---------- 9. Cards ---------- */
.ico {
  width: 50px; height: 50px; border-radius: 13px; margin-bottom: 17px;
  display: grid; place-items: center; background: var(--c-brand-l); color: var(--c-brand);
}
.ico svg { width: 24px; height: 24px; }
.ico.g { background: var(--c-green-l); color: var(--c-green); }
.ico.y { background: var(--c-gold-l); color: var(--c-gold); }

.card {
  position: relative; overflow: hidden;
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--r-l);
  padding: 28px 26px; transition: .24s;
}
.card::before {
  content: ""; position: absolute; left: 0; top: 0; height: 3px; width: 0;
  background: linear-gradient(90deg, var(--c-brand), #4fa3ff); transition: width .3s;
}
.card:hover { border-color: #c5d9f2; box-shadow: var(--sh-3); transform: translateY(-4px); }
.card:hover::before { width: 100%; }
.card h3 { font-size: 17.5px; margin-bottom: 10px; }
.card p { font-size: 14.8px; color: var(--c-ink-3); margin: 0; line-height: 1.85; }

/* 数字亮点 */
.stat { text-align: center; padding: 28px 18px; background: #fff; border: 1px solid var(--c-line); border-radius: var(--r-l); transition: .22s; }
.stat:hover { border-color: #c5d9f2; box-shadow: var(--sh-2); transform: translateY(-3px); }
.stat b { display: block; font-family: var(--f-num); font-size: 38px; line-height: 1.1; color: var(--c-brand); letter-spacing: -.02em; }
.stat b i { font-style: normal; font-size: 17px; color: var(--c-green); }
.stat span { display: block; font-size: 14px; color: var(--c-ink-3); margin-top: 8px; }

/* 步骤条 */
.steps { counter-reset: st; }
.step { position: relative; padding: 0 0 26px 64px; border-left: 2px solid var(--c-line); margin-left: 20px; }
.step:last-child { border-left-color: transparent; padding-bottom: 0; }
.step::before {
  counter-increment: st; content: counter(st);
  position: absolute; left: -21px; top: 0; width: 40px; height: 40px; border-radius: 50%;
  background: #fff; color: var(--c-brand); border: 2px solid var(--c-brand);
  display: grid; place-items: center;
  font-family: var(--f-num); font-size: 15px; font-weight: 700;
}
.step h3 { font-size: 17px; margin-bottom: 6px; }
.step p { font-size: 14.8px; color: var(--c-ink-3); margin: 0; }

/* 横向流程 */
.flow { display: grid; gap: 16px; }
.flow-i {
  position: relative; text-align: center; padding: 26px 14px;
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--r-l); transition: .24s;
}
.flow-i:hover { border-color: #c5d9f2; box-shadow: var(--sh-2); transform: translateY(-3px); }
.flow-i b {
  display: grid; place-items: center; width: 40px; height: 40px; margin: 0 auto 14px;
  border-radius: 50%; background: linear-gradient(150deg, #1a6ee0, #0b3f96); color: #fff;
  font-family: var(--f-num); font-size: 15px; font-weight: 700;
  box-shadow: 0 5px 14px rgba(15,91,212,.28);
}
.flow-i h3 { font-size: 15.5px; margin-bottom: 6px; }
.flow-i p { font-size: 13px; color: var(--c-ink-3); margin: 0; line-height: 1.7; }
.flow-i::after {
  content: ""; position: absolute; right: -13px; top: 50%; width: 8px; height: 8px;
  border-top: 2px solid #cdd9e6; border-right: 2px solid #cdd9e6;
  transform: translateY(-50%) rotate(45deg);
}
.flow-i:last-child::after { display: none; }
.flow-arrow { display: none; }

/* 区块背景纹理 */
.sec-soft { position: relative; }
.sec-soft::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(circle at 12% 18%, rgba(15,91,212,.05), transparent 42%),
                    radial-gradient(circle at 88% 78%, rgba(0,168,107,.05), transparent 42%);
}

/* 选中与焦点 */
::selection { background: #cfe3ff; color: var(--c-ink); }
a:focus-visible, button:focus-visible { outline: 2px solid var(--c-brand); outline-offset: 3px; border-radius: 4px; }

/* 正文细节打磨 */
.lead-para { box-shadow: inset 0 0 0 1px rgba(15,91,212,.07); }
.art h2 { position: relative; }
.art h2::after {
  content: ""; position: absolute; left: 0; bottom: -8px; width: 46px; height: 2px;
  background: linear-gradient(90deg, var(--c-brand), transparent);
}

/* ---------- 10. Tables ---------- */
.tbl-wrap { border: 1px solid var(--c-line); border-radius: var(--r-m); overflow: hidden; background: #fff; box-shadow: var(--sh-1); }
.tbl-wrap table { font-size: 15px; }
.tbl-wrap th, .tbl-wrap td { padding: 15px 22px; text-align: left; border-bottom: 1px solid var(--c-line); vertical-align: top; }
.tbl-wrap thead th { background: linear-gradient(180deg, #f3f7fd, #e9f1fa); color: var(--c-ink); font-weight: 600; font-size: 14px; }
.tbl-wrap tbody tr:nth-child(even) { background: #fafcfe; }
.tbl-wrap tbody tr:hover { background: var(--c-brand-l2); }
.tbl-wrap tbody tr:last-child td { border-bottom: 0; }
.tbl-wrap td:first-child { color: var(--c-ink); font-weight: 600; width: 28%; }

/* ---------- 11. Lists ---------- */
.ul-check { list-style: none; padding: 0; margin: 0; }
.ul-check li { position: relative; padding-left: 28px; margin-bottom: 11px; font-size: 15.3px; line-height: 1.85; }
.ul-check li::before {
  content: ""; position: absolute; left: 0; top: 7px; width: 17px; height: 17px; border-radius: 50%;
  background: var(--c-green-l) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2300a86b' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center/11px no-repeat;
}
.ul-dot { list-style: none; padding: 0; margin: 0; }
.ul-dot li { position: relative; padding-left: 18px; margin-bottom: 9px; }
.ul-dot li::before { content: ""; position: absolute; left: 0; top: 12px; width: 6px; height: 6px; border-radius: 50%; background: var(--c-brand); opacity: .5; }

/* ---------- 12. Keyword grid ---------- */
.kwgrid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 15px; }
.kwcard {
  display: block; position: relative; padding: 20px 20px 18px; background: #fff;
  border: 1px solid var(--c-line); border-radius: var(--r-m); transition: .22s; overflow: hidden;
}
.kwcard::after {
  content: ""; position: absolute; right: -22px; bottom: -22px; width: 60px; height: 60px;
  border-radius: 50%; background: var(--c-brand-l2); transition: .28s;
}
.kwcard:hover { border-color: var(--c-brand); background: var(--c-brand-l2); transform: translateY(-3px); box-shadow: var(--sh-2); }
.kwcard:hover::after { transform: scale(1.8); background: #dbe8ff; }
.kwcard h3 { font-size: 16px; margin-bottom: 7px; color: var(--c-ink); position: relative; }
.kwcard p { font-size: 13.2px; color: var(--c-ink-3); margin: 0; line-height: 1.7; position: relative; }
.kwcard .tag { display: inline-block; margin-top: 11px; font-size: 12px; font-weight: 600; color: var(--c-green); position: relative; }

.kwgroup { margin-bottom: 32px; }
.kwgroup:last-child { margin-bottom: 0; }
.kwgroup > h2 { font-size: 17.5px; margin-bottom: 15px; padding-left: 13px; border-left: 4px solid var(--c-brand); line-height: 1.35; }
.kwgroup > h2 small { font-weight: 400; font-size: 13px; color: var(--c-ink-4); margin-left: 9px; }
.kwlist { display: flex; flex-wrap: wrap; gap: 10px; }
.kwlist a {
  padding: 9px 17px; background: #fff; border: 1px solid var(--c-line); border-radius: 100px;
  font-size: 14px; color: var(--c-ink-2); transition: .18s;
}
.kwlist a:hover { border-color: var(--c-brand); color: var(--c-brand); background: var(--c-brand-l2); transform: translateY(-2px); box-shadow: var(--sh-1); }

/* ---------- 13. Topic cards ---------- */
.tcard { display: flex; flex-direction: column; background: #fff; border: 1px solid var(--c-line); border-radius: var(--r-l); overflow: hidden; transition: .26s; }
.tcard:hover { border-color: #bcd6f5; box-shadow: var(--sh-3); transform: translateY(-5px); }
.tcard-top { padding: 28px 28px 22px; background: linear-gradient(160deg, #f5f9ff, #e7f0fb); border-bottom: 1px solid var(--c-line); position: relative; overflow: hidden; }
.tcard-top::after { content: ""; position: absolute; right: -30px; top: -30px; width: 110px; height: 110px; border-radius: 50%; background: rgba(15,91,212,.07); }
.tcard-no { font-family: var(--f-num); font-size: 36px; font-weight: 700; color: #cfe0f5; line-height: 1; position: relative; }
.tcard h2 { font-size: 20px; margin: 9px 0 9px; position: relative; }
.tcard-top p { font-size: 14px; color: var(--c-ink-3); margin: 0; position: relative; }
.tcard-body { padding: 24px 28px 26px; flex: 1; display: flex; flex-direction: column; }
.tcard-body > p { font-size: 14.6px; }
.tcard-body ul { margin: 0 0 18px; }
.tcard-kw { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 20px; }
.tcard-kw span { padding: 4px 11px; background: var(--c-green-l); color: var(--c-green-d); border-radius: 5px; font-size: 12.2px; }
.tcard .btn { align-self: flex-start; margin-top: auto; }

/* ---------- 14. FAQ ---------- */
.faq { border: 1px solid var(--c-line); border-radius: var(--r-m); overflow: hidden; background: #fff; box-shadow: var(--sh-1); }
.faq-i { border-bottom: 1px solid var(--c-line); }
.faq-i:last-child { border-bottom: 0; }
.faq-q {
  width: 100%; display: flex; align-items: flex-start; gap: 15px;
  padding: 19px 26px; background: none; border: 0; cursor: pointer; text-align: left;
  font-size: 16px; font-weight: 600; color: var(--c-ink); line-height: 1.7;
}
.faq-q:hover { background: var(--c-brand-l2); }
.faq-q .ic {
  flex: 0 0 auto; width: 24px; height: 24px; margin-top: 2px; border-radius: 50%;
  background: var(--c-brand-l); color: var(--c-brand);
  display: grid; place-items: center; font-size: 13px; font-weight: 700; font-family: var(--f-num);
}
.faq-q .arw { margin-left: auto; flex: 0 0 auto; width: 16px; height: 16px; margin-top: 6px; color: var(--c-ink-4); transition: transform .22s; }
.faq-i.open .faq-q { background: var(--c-brand-l2); }
.faq-i.open .faq-q .arw { transform: rotate(180deg); color: var(--c-brand); }
.faq-a { display: none; padding: 0 26px 22px 65px; font-size: 15.3px; color: var(--c-ink-2); line-height: 1.95; }
.faq-i.open .faq-a { display: block; }
.faq-a p:last-child { margin-bottom: 0; }
.faq-cta { margin-top: 28px; text-align: center; }
.faq-cta p { color: var(--c-ink-3); font-size: 15px; margin-bottom: 16px; }

/* ---------- 15. Article body ---------- */
.art { font-size: 16.2px; line-height: 2.02; color: var(--c-ink-2); }
.art h2 {
  font-size: 25px; margin: 52px 0 20px; padding-left: 15px;
  border-left: 4px solid var(--c-brand); line-height: 1.42;
}
.art h2:first-child { margin-top: 0; }
.art h3 { font-size: 19px; margin: 34px 0 14px; }
.art p { margin-bottom: 1.2em; }
.art ul, .art ol { margin-bottom: 1.35em; }
.art li { margin-bottom: .55em; }
.art strong { color: var(--c-ink); }
.art a { border-bottom: 1px solid #bcd6f5; }
.art a:hover { border-bottom-color: var(--c-brand); }
.art .tbl-wrap { margin: 22px 0 26px; }
.art .flow { margin: 22px 0 26px; }
.art .faq { margin: 22px 0 26px; }
.art .grid.g-3 { margin: 22px 0 26px; }

.lead-para {
  font-size: 17px; line-height: 2.0; color: var(--c-ink-2);
  padding: 24px 28px; margin-bottom: 34px;
  background: linear-gradient(135deg, #f3f8ff, #eaf2ff);
  border-left: 4px solid var(--c-brand); border-radius: 0 var(--r-m) var(--r-m) 0;
}
.lead-para p:last-child { margin-bottom: 0; }
.note { padding: 18px 22px; margin: 24px 0; background: var(--c-gold-l); border-radius: var(--r-s); font-size: 15px; color: #7a5c14; }
.note b { color: #5f470f; }
.quote { padding: 20px 24px; margin: 26px 0; background: var(--c-bg-soft); border-radius: var(--r-s); border-left: 4px solid var(--c-green); font-size: 15.2px; }

/* ---------- 16. Sidebar ---------- */
.side { position: sticky; top: calc(var(--hdr) + 62px); }
.sbox { background: #fff; border: 1px solid var(--c-line); border-radius: var(--r-l); padding: 24px; margin-bottom: 20px; box-shadow: var(--sh-1); }
.sbox > h3 { font-size: 16.5px; margin-bottom: 15px; padding-bottom: 13px; border-bottom: 1px solid var(--c-line); }
.sbox ul { list-style: none; padding: 0; margin: 0; }
.sbox ul li a {
  display: flex; gap: 11px; align-items: baseline; padding: 9px 0;
  font-size: 14.5px; color: var(--c-ink-2); border-bottom: 1px dashed #eef2f7;
}
.sbox ul li:last-child a { border-bottom: 0; }
.sbox ul li a:hover { color: var(--c-brand); }
.sbox ul li a i { font-style: normal; font-family: var(--f-num); font-size: 12px; color: var(--c-ink-4); flex: 0 0 auto; }
.sbox-p { background: linear-gradient(160deg, #0d2440, #123a63); border: 0; color: #a9bacb; box-shadow: var(--sh-2); }
.sbox-p h3 { color: #fff; border-bottom-color: rgba(255,255,255,.15); }
.sbox-p p { font-size: 14.5px; color: #a9bacb; }
.sbox-p .btn { width: 100%; }
.sbox-p .sbox-tip { font-size: 12.8px; color: #7f93a8; margin-top: 12px; }

/* ---------- 17. CTA 组件 ---------- */
.cta-band { position: relative; overflow: hidden; background: linear-gradient(115deg, #0b1f38, #14416f 55%, #0e3557); padding: 58px 0; color: #b6c6d6; }
.cta-band::after { content: ""; position: absolute; left: 56%; top: -70%; width: 520px; height: 520px; border-radius: 50%; background: radial-gradient(circle, rgba(0,168,107,.22), transparent 65%); }
.cta-band .wrap { position: relative; z-index: 2; display: flex; align-items: center; gap: 36px; flex-wrap: wrap; }
.cta-band h2 { color: #fff; font-size: 29px; margin-bottom: 10px; }
.cta-band p { margin: 0; font-size: 16px; }
.cta-band .btn { margin-left: auto; }

/* 三步报价 */
.quick { background: #fff; border: 1px solid var(--c-line); border-radius: var(--r-l); box-shadow: var(--sh-2); padding: 30px 32px; }
.quick-head { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; margin-bottom: 24px; }
.quick-head h2 { font-size: 22px; margin: 0; }
.quick-head p { margin: 4px 0 0; font-size: 14.5px; color: var(--c-ink-3); }
.quick-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.qstep { position: relative; padding: 20px 20px 20px 62px; background: var(--c-bg-soft); border-radius: var(--r-m); }
.qstep b {
  position: absolute; left: 18px; top: 18px; width: 30px; height: 30px; border-radius: 50%;
  background: var(--c-brand); color: #fff; display: grid; place-items: center;
  font-family: var(--f-num); font-size: 14px; font-weight: 700;
}
.qstep h3 { font-size: 15.5px; margin-bottom: 5px; }
.qstep p { font-size: 13.6px; color: var(--c-ink-3); margin: 0; line-height: 1.75; }

/* 悬浮咨询栏 */
.rail { position: fixed; right: 18px; top: 50%; transform: translateY(-50%); z-index: 88; display: grid; gap: 10px; }
.rail a {
  width: 62px; padding: 12px 6px; border-radius: 12px;
  background: #fff; border: 1px solid var(--c-line); box-shadow: var(--sh-2);
  display: grid; place-items: center; gap: 5px;
  font-size: 12px; line-height: 1.35; color: var(--c-ink-2); text-align: center;
  transition: .2s;
}
.rail a svg { width: 19px; height: 19px; }
.rail a:hover { color: #fff; background: var(--c-brand); border-color: var(--c-brand); transform: translateY(-2px); box-shadow: var(--sh-3); }
.rail a.rail-main { background: var(--c-green); border-color: var(--c-green); color: #fff; box-shadow: var(--sh-green); }
.rail a.rail-main:hover { background: var(--c-green-d); border-color: var(--c-green-d); }

/* 移动端底部条 */
.mbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 95; display: none;
  background: rgba(255,255,255,.97); backdrop-filter: blur(10px);
  border-top: 1px solid var(--c-line); padding: 9px 12px calc(9px + env(safe-area-inset-bottom));
  box-shadow: 0 -4px 18px rgba(10,23,40,.08);
}
.mbar-in { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.mbar .btn { width: 100%; padding: 12px 10px; font-size: 14.5px; }
body.has-mbar { padding-bottom: 68px; }

/* ---------- 18. News list ---------- */
.nlst { list-style: none; padding: 0; margin: 0; }
.nlst li { border-bottom: 1px dashed var(--c-line); }
.nlst li:last-child { border-bottom: 0; }
.nlst a { display: flex; align-items: center; gap: 16px; padding: 15px 0; }
.nlst a:hover .nlst-t { color: var(--c-brand); }
.nlst-d { flex: 0 0 auto; width: 52px; text-align: center; padding: 7px 0; background: var(--c-bg-soft2); border-radius: var(--r-s); }
.nlst-d b { display: block; font-family: var(--f-num); font-size: 19px; color: var(--c-brand); line-height: 1.1; }
.nlst-d span { font-size: 11px; color: var(--c-ink-4); }
.nlst-t { flex: 1; font-size: 15.3px; color: var(--c-ink); transition: color .18s; line-height: 1.7; }
.nlst-c { flex: 0 0 auto; font-size: 12.5px; color: var(--c-ink-4); }

/* ---------- 19. Footer ---------- */
.ftr { background: var(--c-bg-deep); color: #8fa2b5; font-size: 14px; }
.ftr-cta { border-bottom: 1px solid rgba(255,255,255,.09); padding: 40px 0; }
.ftr-cta .wrap { display: flex; align-items: center; gap: 26px; flex-wrap: wrap; }
.ftr-cta h2 { color: #fff; font-size: 24px; margin: 0 0 6px; }
.ftr-cta p { margin: 0; color: #93a5b8; font-size: 15px; }
.ftr-cta .btn { margin-left: auto; }
.ftr-top { display: grid; grid-template-columns: 1.7fr 1fr 1fr 1fr 1fr; gap: 34px; padding: 50px 0 40px; }
.ftr h3 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.ftr ul { list-style: none; padding: 0; margin: 0; }
.ftr ul li { margin-bottom: 9px; }
.ftr ul li a { color: #8fa2b5; font-size: 13.8px; }
.ftr ul li a:hover { color: #fff; }
.ftr-about p { font-size: 14px; line-height: 1.95; color: #8fa2b5; }
.ftr-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.ftr-kw { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 16px; }
.ftr-kw span { padding: 5px 11px; background: rgba(255,255,255,.07); border-radius: 5px; font-size: 12.2px; color: #9fb1c3; }
.ftr-bot { border-top: 1px solid rgba(255,255,255,.09); padding: 22px 0; }
.ftr-bot p { margin: 0; font-size: 13px; color: #7d8fa2; }

/* ---------- 20b. 阅读进度条 ---------- */
.progress { position: fixed; left: 0; top: 0; width: 100%; height: 3px; z-index: 130; background: transparent; pointer-events: none; }
.progress i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--c-green), #4fe0a6); transition: width .1s linear; }

/* ---------- 20c. 合规声明区 ---------- */
.cbox { background: #fff; border: 1px solid var(--c-line); border-radius: var(--r-l); padding: 28px 28px 24px; }
.cbox h3 { display: flex; align-items: center; gap: 11px; font-size: 18px; margin-bottom: 16px; }
.cbox-i { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; flex: 0 0 auto; }
.cbox-i svg { width: 17px; height: 17px; }
.cbox-ok { border-top: 3px solid var(--c-green); }
.cbox-ok .cbox-i { background: var(--c-green-l); color: var(--c-green); }
.cbox-no { border-top: 3px solid var(--c-ink-4); }
.cbox-no .cbox-i { background: #eef2f7; color: var(--c-ink-3); }
.ul-x li::before {
  background: #f0f2f5 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='3.5' stroke-linecap='round'%3E%3Cpath d='M18 6 6 18M6 6l12 12'/%3E%3C/svg%3E") center/9px no-repeat;
}
.cnote {
  margin-top: 24px; padding: 24px 28px;
  background: #fff; border: 1px dashed var(--c-line-2); border-radius: var(--r-m);
  font-size: 14.5px; line-height: 1.95; color: var(--c-ink-3);
}
.cnote p:last-child { margin-bottom: 0; }
.ftr-disc { margin-top: 8px; max-width: 900px; line-height: 1.8; }

/* ---------- 20d. 侧栏目录 ---------- */
.sbox-toc { background: linear-gradient(180deg, #f7faff, #fff); }
.sbox-toc ul li a { font-size: 14.2px; }
.sbox-toc ul li a i { font-family: var(--f-num); font-size: 12px; color: var(--c-brand); font-weight: 700; }
.sbox-toc ul li a:hover i { color: var(--c-brand-d); }
.art h2[id] { scroll-margin-top: calc(var(--hdr) + 70px); }

/* ---------- 20e. 内页精简合规提示 ---------- */
.cmini {
  display: flex; gap: 14px; align-items: flex-start;
  padding: 18px 22px; margin-bottom: 32px;
  background: linear-gradient(135deg, #f7fafd, #eef4fb);
  border: 1px solid #dde7f2; border-radius: var(--r-m);
}
.cmini-i {
  flex: 0 0 auto; width: 32px; height: 32px; border-radius: 50%;
  display: grid; place-items: center; background: var(--c-brand-l); color: var(--c-brand);
}
.cmini-i svg { width: 17px; height: 17px; }
.cmini b { display: block; font-size: 14.5px; color: var(--c-ink); margin-bottom: 4px; }
.cmini p { margin: 0; font-size: 14px; line-height: 1.9; color: var(--c-ink-3); }
.cmini a { border-bottom: 1px solid #bcd6f5; white-space: nowrap; }

/* ---------- 20. Misc ---------- */
.badges { display: flex; flex-wrap: wrap; gap: 9px; }
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 6px 14px; border-radius: 100px; font-size: 13px; font-weight: 500; background: var(--c-brand-l); color: var(--c-brand); }
.badge svg { width: 14px; height: 14px; }
.badge.g { background: var(--c-green-l); color: var(--c-green-d); }
.badge.y { background: var(--c-gold-l); color: #8a651a; }
.badge.o { background: #fff; border: 1px solid var(--c-line-2); color: var(--c-ink-2); }

.reveal { opacity: 0; transform: translateY(20px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

.to-top {
  position: fixed; right: 18px; bottom: 22px; z-index: 90;
  width: 46px; height: 46px; border-radius: 50%; border: 1px solid var(--c-line);
  background: #fff; color: var(--c-ink-2); cursor: pointer;
  display: grid; place-items: center; box-shadow: var(--sh-2);
  opacity: 0; visibility: hidden; transition: .25s;
}
.to-top.show { opacity: 1; visibility: visible; }
.to-top:hover { background: var(--c-brand); color: #fff; border-color: var(--c-brand); }
.to-top svg { width: 18px; height: 18px; }

/* ---------- 21. Responsive ---------- */
@media (max-width: 1180px) {
  .rail { display: none; }
  .ftr-top { grid-template-columns: 1fr 1fr 1fr; }
}
@media (max-width: 1080px) {
  .kwgrid { grid-template-columns: repeat(3, 1fr); }
  .g-4 { grid-template-columns: repeat(2, 1fr); }
  .g-main { grid-template-columns: 1fr; gap: 40px; }
  .side { position: static; }
  .flow-i::after { display: none; }
}
@media (max-width: 900px) {
  :root { --hdr: 60px; }
  .nav-toggle { display: block; }
  .nav {
    position: fixed; top: calc(var(--hdr) + 36px); left: 0; right: 0; bottom: 0;
    background: #fff; margin: 0; padding: 16px var(--gut) 120px;
    overflow-y: auto; transform: translateX(-100%); transition: transform .28s; box-shadow: var(--sh-3);
  }
  .nav.open { transform: none; }
  .nav > ul { display: block; }
  .nav > ul > li { border-bottom: 1px solid var(--c-line); }
  .nav > ul > li > a { padding: 15px 4px; font-size: 16px; }
  .nav > ul > li.is-cur > a::after { display: none; }
  .nav > ul > li.btn-cta > a { margin: 18px 0 0; justify-content: center; }
  .drop, .drop-wide { position: static; transform: none; opacity: 1; visibility: visible; pointer-events: auto; box-shadow: none; border: 0; min-width: 0; padding: 0 0 12px; display: none; }
  .nav > ul > li.is-open .drop { display: block; transform: none; }
  .drop-cols { grid-template-columns: 1fr; }
  .g-2, .g-3 { grid-template-columns: 1fr; }
  .hero-in { grid-template-columns: 1fr; gap: 26px; }
  .hero-art { max-width: 340px; }
  .hero h1 { font-size: 28px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); margin-top: 32px; }
  .shead h2 { font-size: 24px; }
  .sec { padding: 52px 0; }
  .ftr-top { grid-template-columns: 1fr 1fr; }
  .cta-band .btn { margin-left: 0; width: 100%; }
  .ftr-cta .btn { margin-left: 0; width: 100%; }
  .quick-steps { grid-template-columns: 1fr; }
  .phead h1 { font-size: 25px; }
  .art h2 { font-size: 21px; }
}
@media (max-width: 620px) {
  :root { --gut: 18px; }
  body { font-size: 15px; padding-bottom: 70px; }
  .hdr-top { display: none; }
  .nav { top: var(--hdr); }
  .kwgrid { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 24px; }
  .hero-sub { font-size: 15.2px; }
  .hero .wrap { padding-top: 40px; padding-bottom: 40px; }
  .ftr-top { grid-template-columns: 1fr; gap: 28px; }
  .tbl-wrap { font-size: 14px; }
  .tbl-wrap th, .tbl-wrap td { padding: 12px 14px; }
  .tbl-wrap td:first-child { width: 36%; }
  .btn { padding: 12px 22px; font-size: 14.5px; }
  .hero-cta .btn { flex: 1; }
  .mbar { display: block; }
  .to-top { bottom: 84px; }
  .rail { display: none; }
  .quick { padding: 24px 20px; }
}

@media print {
  .hdr, .ftr, .to-top, .cta-band, .nav, .rail, .mbar { display: none; }
}

/* ---------- 20f. 抄板风险与合规提示横幅 ---------- */
.riskbar {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 20px 24px; margin: 28px 0 0;
  background: linear-gradient(135deg, #fffaf0, #fdf4e3);
  border: 1px solid #f0dcb0; border-left: 4px solid var(--c-gold);
  border-radius: var(--r-m);
}
.riskbar-i {
  flex: 0 0 auto; width: 34px; height: 34px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--c-gold-l); color: var(--c-gold);
}
.riskbar-i svg { width: 18px; height: 18px; }
.riskbar-t b { display: block; font-size: 15.5px; color: #6b4f10; margin-bottom: 5px; }
.riskbar-t p { margin: 0; font-size: 14px; line-height: 1.9; color: #8a6d22; }
.riskbar-t strong { color: #5f470f; }
.riskbar-t a { color: #9a6b00; border-bottom: 1px solid #e0c684; white-space: nowrap; }
.riskbar-t a:hover { color: #6b4f10; border-bottom-color: #9a6b00; }
.sec > .wrap > .riskbar:first-child, .sec-sm > .wrap > .riskbar:first-child { margin-top: 0; }
@media (max-width: 620px) {
  .riskbar { padding: 16px 16px; gap: 12px; }
  .riskbar-t p { font-size: 13.5px; }
}

/* riskbar 与相邻模块的间距 */
.wrap > .riskbar:first-child, .wrap > .quick + .riskbar { margin-top: 22px; }