/* ============================================================
   kssmt · 昆山贴片加工
   视觉体系：石墨黑 × 铜橙 × 钢青 —— 精密制造感
   ============================================================ */

:root {
  --c-ink: #0B1013;
  --c-ink-2: #334750;
  --c-ink-3: #647B87;
  --c-ink-4: #93A6B0;

  --c-bg: #FFFFFF;
  --c-bg-soft: #F5F8F9;
  --c-bg-soft2: #EBF1F3;

  --c-copper: #C4682A;
  --c-copper-d: #A2531F;
  --c-copper-l: #FBEEE3;
  --c-copper-g1: #D07A38;
  --c-copper-g2: #E8A05A;

  --c-steel: #0F5E7A;
  --c-steel-d: #0A465B;
  --c-steel-l: #E6F1F5;

  --c-line: #E2EAED;
  --c-line-2: #CFDCE1;

  --r-s: 4px;
  --r-m: 8px;
  --r-l: 14px;

  --sh-1: 0 1px 3px rgba(11,16,19,.06);
  --sh-2: 0 6px 20px rgba(11,16,19,.08);
  --sh-3: 0 16px 44px rgba(11,16,19,.12);
  --sh-cop: 0 8px 22px rgba(196,104,42,.3);

  --wrap: 1240px;
  --gut: 28px;
  --hdr: 68px;

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

*, *::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: 1.34; letter-spacing: -.02em; }
h1 { font-size: 33px; } h2 { font-size: 27px; } h3 { font-size: 20px; } h4 { font-size: 16.5px; }
p { margin: 0 0 1.15em; }
a { color: var(--c-steel); text-decoration: none; transition: color .18s, background .18s, border-color .18s; }
a:hover { color: var(--c-steel-d); }
svg { display: inline-block; }
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; }
button { font-family: inherit; }
img { max-width: 100%; height: auto; display: block; }

.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-dark { background: var(--c-ink); color: #9FB2BC; }
.sec-dark h2, .sec-dark h3 { color: #fff; }
.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) 320px; gap: 46px; }

/* ---------- Header ---------- */
.hdr {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.96);
  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-ink); color: #8FA4AE; font-size: 12.5px; line-height: 1; }
.hdr-top .wrap { display: flex; align-items: center; justify-content: space-between; min-height: 34px; gap: 14px; flex-wrap: wrap; }
.hdr-top a { color: #8FA4AE; } .hdr-top a:hover { color: #fff; }
.hdr-city { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.hdr-city b { color: #fff; font-weight: 500; }
.hdr-city span { opacity: .45; }
.hdr-links { display: flex; align-items: center; gap: 13px; }
.hdr-links .dot { opacity: .3; }
.hdr-main .wrap { display: flex; align-items: center; gap: 24px; height: var(--hdr); }
.logo { display: flex; align-items: center; gap: 11px; flex: 0 0 auto; }
.logo-mark {
  width: 40px; height: 40px; flex: 0 0 auto; border-radius: 3px;
  background: linear-gradient(140deg, var(--c-copper-g2), var(--c-copper-d));
  display: grid; place-items: center; box-shadow: var(--sh-cop);
}
.logo-mark svg { width: 22px; height: 22px; color: #fff; }
.logo-txt { line-height: 1.25; }
.logo-txt b { display: block; font-size: 16.5px; color: var(--c-ink); }
.logo-txt span { display: block; font-size: 10px; color: var(--c-ink-4); letter-spacing: .2em; }

.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-copper-d); background: var(--c-copper-l); }
.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-copper-d); }
.nav > ul > li.is-cur > a::after { content: ""; position: absolute; left: 13px; right: 13px; bottom: 0; height: 2px; background: var(--c-copper); }
.nav > ul > li.btn-cta > a { background: linear-gradient(140deg, var(--c-copper-g1), var(--c-copper-d)); color: #fff; padding: 10px 20px; margin-left: 10px; box-shadow: var(--sh-cop); }
.nav > ul > li.btn-cta > a:hover { color: #fff; filter: brightness(1.06); }
.drop {
  position: absolute; top: 100%; left: 50%; transform: translateX(-50%) translateY(8px);
  min-width: 620px; padding: 18px; 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-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px 26px; }
.drop-grp { margin-bottom: 10px; }
.drop-grp > i { display: block; font-style: normal; font-size: 11px; font-weight: 700; letter-spacing: .1em; color: var(--c-ink-4); padding: 0 9px 5px; }
.drop a { display: block; padding: 6px 9px; border-radius: var(--r-s); font-size: 13.2px; color: var(--c-ink-2); }
.drop a:hover { background: var(--c-copper-l); color: var(--c-copper-d); }
.drop-foot { margin-top: 10px; padding-top: 10px; border-top: 1px solid var(--c-line); display: flex; justify-content: space-between; font-size: 13px; }
.drop-min { min-width: 220px; }
.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); }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; background: var(--c-ink); color: #A3B6C0; }
.hero-grid {
  position: absolute; inset: 0;
  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: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 65% at 78% 28%, #000 10%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 70% 65% at 78% 28%, #000 10%, transparent 70%);
}
.hero-glow {
  position: absolute; right: -140px; top: -160px; width: 640px; height: 640px; border-radius: 50%;
  background: radial-gradient(circle, rgba(196,104,42,.3), transparent 62%);
}
.hero .wrap { position: relative; z-index: 2; padding: 60px 0 56px; }
.hero-in { display: grid; grid-template-columns: 1.1fr .9fr; gap: 44px; align-items: center; }
.hero-label {
  display: inline-flex; align-items: center; gap: 9px; padding: 6px 15px; margin-bottom: 20px;
  border: 1px solid rgba(232,160,90,.35); border-radius: 2px;
  font-size: 12.5px; letter-spacing: .06em; color: var(--c-copper-g2); background: rgba(196,104,42,.1);
}
.hero-label em { font-style: normal; width: 6px; height: 6px; background: var(--c-copper-g2); }
.hero h1 { font-size: 42px; line-height: 1.28; color: #fff; margin-bottom: 18px; }
.hero h1 .hl { position: relative; color: #fff; white-space: nowrap; }
.hero h1 .hl::after { content: ""; position: absolute; left: 0; right: 0; bottom: 2px; height: 8px; background: rgba(196,104,42,.42); z-index: -1; }
.hero-sub { font-size: 16.5px; line-height: 1.95; color: #9DB0BB; margin-bottom: 28px; }
.hero-sub strong { color: #E6EDF1; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 26px; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 10px 22px; font-size: 13.5px; color: #8AA0AC; }
.hero-trust span { display: inline-flex; align-items: center; gap: 7px; }
.hero-trust svg { width: 14px; height: 14px; color: var(--c-copper-g2); flex: 0 0 auto; }
.hero-art svg { width: 100%; height: auto; filter: drop-shadow(0 24px 50px rgba(0,0,0,.5)); }
.hero-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-top: 44px;
  background: rgba(255,255,255,.09); border: 1px solid rgba(255,255,255,.09);
}
.hero-stats div { background: rgba(8,12,15,.75); padding: 20px 24px; }
.hero-stats b { display: block; font-family: var(--f-num); font-size: 32px; line-height: 1.15; color: #fff; }
.hero-stats b i { font-style: normal; font-size: 15px; color: var(--c-copper-g2); margin-left: 2px; }
.hero-stats span { font-size: 13px; color: #8AA0AC; }

/* ---------- 页头（内页） ---------- */
.phead { position: relative; overflow: hidden; background: linear-gradient(115deg, #0A0F12, #16313C 70%, #0F2731); color: #9FB2BC; }
.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: 44px 44px;
  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: 44px 0; }
.phead h1 { color: #fff; font-size: 34px; margin-bottom: 12px; }
.phead .lead { font-size: 16px; color: #A5B8C2; margin: 0; max-width: 48em; }
.phead-cta { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 22px; }

/* ---------- 面包屑 ---------- */
.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 { 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-copper-d); }

/* ---------- 区块标题 ---------- */
.shead { margin-bottom: 40px; }
.shead-c { text-align: center; max-width: 760px; margin: 0 auto; }
.shead-tag {
  display: inline-flex; align-items: center; gap: 8px; margin-bottom: 12px;
  font-size: 12px; font-weight: 700; letter-spacing: .2em; color: var(--c-copper-d);
}
.shead-tag::before { content: ""; width: 22px; height: 2px; background: var(--c-copper); }
.shead h2 { font-size: 30px; margin-bottom: 14px; }
.shead p { font-size: 16px; color: var(--c-ink-3); margin: 0; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 28px; border-radius: 2px; 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-cop { background: linear-gradient(140deg, var(--c-copper-g1), var(--c-copper-d)); color: #fff; box-shadow: var(--sh-cop); }
.btn-cop:hover { color: #fff; filter: brightness(1.07); transform: translateY(-2px); }
.btn-o { background: transparent; color: #fff; border-color: rgba(255,255,255,.35); }
.btn-o:hover { background: rgba(255,255,255,.1); color: #fff; }
.btn-oo { background: #fff; color: var(--c-ink); border-color: var(--c-line-2); }
.btn-oo:hover { border-color: var(--c-copper); color: var(--c-copper-d); background: var(--c-copper-l); transform: translateY(-2px); }
.btn-sm { padding: 9px 20px; font-size: 14px; }
.btn-lg { padding: 16px 36px; font-size: 16.5px; }

/* ---------- 卡片 ---------- */
.ico { width: 46px; height: 46px; display: grid; place-items: center; margin-bottom: 16px;
       background: var(--c-steel-l); color: var(--c-steel); border-radius: 2px; }
.ico svg { width: 23px; height: 23px; }
.ico.c { background: var(--c-copper-l); color: var(--c-copper-d); }
.card {
  position: relative; background: #fff; border: 1px solid var(--c-line); padding: 28px 26px;
  transition: .24s; border-top: 2px solid transparent;
}
.card:hover { border-color: var(--c-line-2); border-top-color: var(--c-copper); box-shadow: var(--sh-2); transform: translateY(-3px); }
.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; }

.stat { text-align: center; padding: 28px 18px; background: #fff; border: 1px solid var(--c-line); border-bottom: 2px solid var(--c-copper); }
.stat b { display: block; font-family: var(--f-num); font-size: 36px; line-height: 1.1; color: var(--c-copper-d); }
.stat b i { font-style: normal; font-size: 17px; }
.stat span { display: block; font-size: 13.5px; color: var(--c-ink-3); margin-top: 8px; }

.steps { counter-reset: st; }
.step { position: relative; padding: 0 0 26px 62px; 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,decimal-leading-zero);
  position: absolute; left: -21px; top: 0; width: 40px; height: 40px; border-radius: 2px;
  background: var(--c-ink); color: #fff; 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; }

.flow { display: grid; gap: 16px; }
.flow-i { position: relative; text-align: center; padding: 26px 14px; background: #fff; border: 1px solid var(--c-line); transition: .24s; }
.flow-i:hover { border-color: var(--c-line-2); box-shadow: var(--sh-2); transform: translateY(-3px); }
.flow-i b { display: grid; place-items: center; width: 38px; height: 38px; margin: 0 auto 14px;
            background: var(--c-ink); color: #fff; font-family: var(--f-num); font-size: 14px; font-weight: 700; }
.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 var(--c-line-2); border-right: 2px solid var(--c-line-2);
  transform: translateY(-50%) rotate(45deg);
}
.flow-i:last-child::after { display: none; }

/* ---------- 表格 ---------- */
.tbl-wrap { border: 1px solid var(--c-line); overflow: hidden; box-shadow: var(--sh-1); }
.tbl-wrap table { font-size: 15px; }
.tbl-wrap th, .tbl-wrap td { padding: 14px 20px; text-align: left; border-bottom: 1px solid var(--c-line); vertical-align: top; }
.tbl-wrap thead th { background: var(--c-ink); color: #fff; font-weight: 600; font-size: 14px; border-bottom: 0; }
.tbl-wrap tbody tr:nth-child(even) { background: #FAFCFC; }
.tbl-wrap tbody tr:hover { background: var(--c-steel-l); }
.tbl-wrap tbody tr:last-child td { border-bottom: 0; }
.tbl-wrap td:first-child { color: var(--c-ink); font-weight: 600; width: 28%; }

/* ---------- 列表 ---------- */
.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;
  background: var(--c-copper-l) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23A2531F' 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;
}

/* ---------- 关键词矩阵 ---------- */
.kwgrid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.kwcard {
  display: block; position: relative; padding: 20px; background: #fff; border: 1px solid var(--c-line);
  transition: .22s; border-left: 3px solid transparent;
}
.kwcard:hover { border-color: var(--c-line-2); border-left-color: var(--c-copper); background: var(--c-copper-l); transform: translateY(-3px); box-shadow: var(--sh-2); }
.kwcard h3 { font-size: 16px; margin-bottom: 7px; }
.kwcard p { font-size: 13.2px; color: var(--c-ink-3); margin: 0; }
.kwcard .tag { display: inline-block; margin-top: 11px; font-size: 12px; font-weight: 600; color: var(--c-copper-d); }
.kwgroup { margin-bottom: 30px; }
.kwgroup:last-child { margin-bottom: 0; }
.kwgroup > h2 { font-size: 17.5px; margin-bottom: 14px; padding-left: 13px; border-left: 4px solid var(--c-copper); }
.kwgroup > h2 small { font-weight: 400; font-size: 13px; color: var(--c-ink-4); margin-left: 9px; }
.kwlist { display: flex; flex-wrap: wrap; gap: 9px; }
.kwlist a { padding: 9px 17px; background: #fff; border: 1px solid var(--c-line); font-size: 14px; color: var(--c-ink-2); }
.kwlist a:hover { border-color: var(--c-copper); color: var(--c-copper-d); background: var(--c-copper-l); }

/* ---------- GEO 摘要卡 ---------- */
.gabstract {
  background: var(--c-bg-soft); border-left: 4px solid var(--c-copper);
  padding: 26px 30px; margin-bottom: 34px;
}
.gabstract .ga-tag { display: inline-block; font-size: 11.5px; font-weight: 700; letter-spacing: .18em; color: var(--c-copper-d); margin-bottom: 10px; }
.gabstract p { margin: 0; font-size: 16.5px; line-height: 2.0; color: var(--c-ink); }

.kfacts { background: #fff; border: 1px solid var(--c-line); padding: 24px 28px; margin-bottom: 34px; }
.kfacts h2 { font-size: 17px; margin-bottom: 14px; display: flex; align-items: center; gap: 9px; }
.kfacts h2::before { content: ""; width: 3px; height: 16px; background: var(--c-copper); }
.kfacts ul { margin: 0; }

/* ---------- FAQ ---------- */
.faq { border: 1px solid var(--c-line); 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: 14px; padding: 18px 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-bg-soft); }
.faq-q .ic { flex: 0 0 auto; width: 22px; height: 22px; margin-top: 3px; display: grid; place-items: center;
             background: var(--c-copper-l); color: var(--c-copper-d); font-size: 12px; 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-bg-soft); }
.faq-i.open .faq-q .arw { transform: rotate(180deg); color: var(--c-copper-d); }
.faq-a { display: none; padding: 0 26px 22px 62px; font-size: 15.3px; 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; }

/* ---------- 正文 ---------- */
.art { font-size: 16.2px; line-height: 2.02; }
.art h2 { font-size: 25px; margin: 52px 0 20px; padding-left: 15px; border-left: 4px solid var(--c-copper); }
.art h2:first-child { margin-top: 0; }
.art h2[id] { scroll-margin-top: calc(var(--hdr) + 74px); }
.art h3 { font-size: 19px; margin: 34px 0 14px; }
.art p { margin-bottom: 1.2em; }
.art strong { color: var(--c-ink); }
.art .tbl-wrap, .art .flow, .art .faq, .art .grid { margin: 22px 0 26px; }

/* ---------- 侧栏 ---------- */
.side { position: sticky; top: calc(var(--hdr) + 64px); }
.sbox { background: #fff; border: 1px solid var(--c-line); 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 #EDF2F4; }
.sbox ul li:last-child a { border-bottom: 0; }
.sbox ul li a:hover { color: var(--c-copper-d); }
.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-toc { background: var(--c-bg-soft); }
.sbox-toc ul li a i { color: var(--c-copper-d); font-weight: 700; }
.sbox-p { background: linear-gradient(150deg, #0A0F12, #17323D); border: 0; color: #A5B8C2; }
.sbox-p h3 { color: #fff; border-bottom-color: rgba(255,255,255,.14); }
.sbox-p p { font-size: 14.5px; }
.sbox-p .btn { width: 100%; }
.sbox-p .sbox-tip { font-size: 12.8px; color: #7F97A3; margin-top: 12px; }

/* ---------- 三步报价 ---------- */
.quick { background: #fff; border: 1px solid var(--c-line); border-top: 3px solid var(--c-copper); padding: 30px 32px; box-shadow: var(--sh-2); }
.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 60px; background: var(--c-bg-soft); }
.qstep b { position: absolute; left: 18px; top: 18px; width: 28px; height: 28px; display: grid; place-items: center;
           background: var(--c-ink); color: #fff; font-family: var(--f-num); font-size: 13px; 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; }

/* ---------- CTA ---------- */
.cta-band { position: relative; overflow: hidden; background: linear-gradient(115deg, #0A0F12, #1A3A46 60%, #123039); padding: 58px 0; color: #A5B8C2; }
.cta-band::after { content: ""; position: absolute; left: 56%; top: -70%; width: 520px; height: 520px; border-radius: 50%; background: radial-gradient(circle, rgba(196,104,42,.28), transparent 65%); }
.cta-band .wrap { position: relative; z-index: 2; display: flex; align-items: center; gap: 34px; flex-wrap: wrap; }
.cta-band h2 { color: #fff; font-size: 29px; margin-bottom: 10px; }
.cta-band p { margin: 0; font-size: 16px; }
.cta-band .btns { margin-left: auto; display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- 悬浮组件 ---------- */
.rail { position: fixed; right: 16px; top: 50%; transform: translateY(-50%); z-index: 88; display: grid; gap: 8px; }
.rail a {
  width: 60px; padding: 11px 5px; background: #fff; border: 1px solid var(--c-line);
  display: grid; place-items: center; gap: 4px; font-size: 11.5px; line-height: 1.3;
  color: var(--c-ink-2); text-align: center; box-shadow: var(--sh-2); transition: .2s;
}
.rail a svg { width: 18px; height: 18px; }
.rail a:hover { color: #fff; background: var(--c-steel); border-color: var(--c-steel); transform: translateY(-2px); }
.rail a.rail-main { background: linear-gradient(140deg, var(--c-copper-g1), var(--c-copper-d)); border-color: transparent; color: #fff; box-shadow: var(--sh-cop); }
.rail a.rail-main:hover { filter: brightness(1.08); }
.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(11,16,19,.1); }
.mbar-in { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.mbar .btn { width: 100%; padding: 12px 10px; font-size: 14.5px; }
.to-top { position: fixed; right: 16px; bottom: 20px; z-index: 90; width: 42px; height: 42px;
          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-ink); color: #fff; border-color: var(--c-ink); }
.to-top svg { width: 17px; height: 17px; }
.progress { position: fixed; left: 0; top: 0; width: 100%; height: 3px; z-index: 130; pointer-events: none; }
.progress i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--c-copper-g2), var(--c-copper-d)); }

/* ---------- 资讯 ---------- */
.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-copper-d); }
.nlst-d { flex: 0 0 auto; width: 50px; text-align: center; padding: 6px 0; background: var(--c-ink); color: #fff; }
.nlst-d b { display: block; font-family: var(--f-num); font-size: 18px; line-height: 1.1; }
.nlst-d span { font-size: 10.5px; opacity: .7; }
.nlst-t { flex: 1; font-size: 15.3px; color: var(--c-ink); transition: color .18s; }
.nlst-c { flex: 0 0 auto; font-size: 12.5px; color: var(--c-ink-4); }

/* ---------- Footer ---------- */
.ftr { background: var(--c-ink); color: #8FA4AE; font-size: 14px; position: relative; overflow: hidden; }
.ftr-band { height: 6px; background: linear-gradient(90deg, var(--c-copper-d), var(--c-copper-g2) 45%, var(--c-steel) 100%); }
.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: #9FB2BC; font-size: 15px; }
.ftr-cta .btn { margin-left: auto; }
.ftr-top { display: grid; grid-template-columns: 1.7fr 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: 8px; }
.ftr ul li a { color: #8FA4AE; font-size: 13.8px; }
.ftr ul li a:hover { color: var(--c-copper-g2); }
.ftr-about p { font-size: 14px; line-height: 1.95; }
.ftr-brand { display: flex; align-items: center; gap: 11px; margin-bottom: 16px; }
.ftr-kw { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 16px; }
.ftr-kw span { padding: 4px 10px; background: rgba(255,255,255,.06); font-size: 12.2px; color: #9FB2BC; }
.ftr-bot { border-top: 1px solid rgba(255,255,255,.09); padding: 22px 0 34px; }
.ftr-bot p { margin: 0; font-size: 13px; color: #7F97A3; }
.ftr-disc { margin-top: 8px; max-width: 900px; line-height: 1.8; }

.badges { display: flex; flex-wrap: wrap; gap: 9px; }
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 6px 14px; font-size: 13px; font-weight: 500; background: var(--c-steel-l); color: var(--c-steel-d); }
.badge svg { width: 14px; height: 14px; }
.badge.c { background: var(--c-copper-l); color: var(--c-copper-d); }
.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; }
::selection { background: #F6DCC6; color: var(--c-ink); }
a:focus-visible, button:focus-visible { outline: 2px solid var(--c-copper); outline-offset: 3px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1180px) { .rail { display: none; } }
@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; }
  .ftr-top { grid-template-columns: 1fr 1fr 1fr; }
}
@media (max-width: 900px) {
  :root { --hdr: 60px; }
  .nav-toggle { display: block; }
  .nav { position: fixed; top: calc(var(--hdr) + 34px); 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-min { 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: 24px; }
  .hero-art { max-width: 340px; }
  .hero h1 { font-size: 28px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); margin-top: 30px; }
  .shead h2 { font-size: 24px; }
  .sec { padding: 52px 0; }
  .quick-steps { grid-template-columns: 1fr; }
  .flow-i::after { display: none; }
  .cta-band .btns { margin-left: 0; width: 100%; }
  .ftr-cta .btn { margin-left: 0; width: 100%; }
  .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: 40px 0; }
  .ftr-top { grid-template-columns: 1fr; gap: 26px; }
  .tbl-wrap { font-size: 14px; }
  .tbl-wrap th, .tbl-wrap td { padding: 11px 13px; }
  .tbl-wrap td:first-child { width: 36%; }
  .mbar { display: block; }
  .to-top { bottom: 82px; }
  .gabstract { padding: 20px 18px; }
  .quick { padding: 24px 20px; }
  .hero-cta .btn { flex: 1; }
}

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