/* ==========================================================================
   芯瀚峰官网 · 内页与组件样式（配合 site.css 深色主题）
   ========================================================================== */

/* ---------------- 内页页头 ---------------- */
.page-head {
  position: relative;
  padding: calc(var(--nav-h) + clamp(48px, 7vw, 96px)) 0 clamp(34px, 4vw, 52px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(ellipse 60% 70% at 18% 0%, rgba(63, 216, 232, .1), transparent 62%),
    radial-gradient(ellipse 55% 70% at 82% 10%, rgba(91, 147, 255, .12), transparent 60%);
  overflow: hidden;
}
.page-head-center { text-align: center; }

.crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 12.5px;
  color: var(--text-3);
  letter-spacing: .02em;
}
.crumbs a { transition: color .25s var(--ease); }
.crumbs a:hover { color: var(--text); }
.crumbs span { opacity: .45; }

.page-title {
  font-size: clamp(2rem, 5vw, 3.3rem);
  font-weight: 700;
  letter-spacing: -.035em;
  line-height: 1.08;
}
.page-title-sm { font-size: clamp(1.45rem, 3vw, 2.15rem); letter-spacing: -.02em; line-height: 1.25; }

.page-sub {
  margin-top: 16px;
  max-width: 660px;
  font-size: clamp(14.5px, 1.15vw, 16.5px);
  line-height: 1.8;
  color: var(--text-2);
}
.page-head-center .page-sub { margin-left: auto; margin-right: auto; }

.page-tag {
  margin-top: 16px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .22em;
  color: var(--accent);
}
.page-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-3);
}

/* ---------------- 通用 ---------------- */
.section-tight { padding: clamp(48px, 5.6vw, 84px) 0; }

.h3 { font-size: clamp(1.1rem, 2vw, 1.5rem); letter-spacing: -.02em; margin-bottom: 22px; }

.empty {
  padding: 48px 0;
  text-align: center;
  color: var(--text-3);
  font-size: 14.5px;
}

.more-link {
  align-self: flex-end;
  font-size: 14px;
  color: var(--text-2);
  white-space: nowrap;
  transition: color .3s var(--ease), transform .3s var(--ease);
}
.more-link:hover { color: var(--accent); transform: translateX(4px); }

.sec-head-split {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

/* ---------------- 服务链路（内页/首页共用） ---------------- */
.chain-section { border-top: 1px solid var(--line); }
.chain-head { margin-bottom: clamp(28px, 3.4vw, 44px); }
.chain-head .h2 { margin-top: 18px; }
.chain-note {
  margin-top: clamp(26px, 3vw, 40px);
  font-size: 13.5px;
  letter-spacing: .06em;
  color: var(--text-3);
}

/* ---------------- 数据 ---------------- */
.fact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
}
.fact {
  padding: 26px 22px 0;
  border-left: 1px solid var(--line);
}
.fact:first-child { border-left: 0; padding-left: 0; }
.fact b {
  display: block;
  font-family: var(--mono);
  font-size: clamp(1.35rem, 2.4vw, 1.9rem);
  font-weight: 600;
  letter-spacing: -.03em;
  font-variant-numeric: tabular-nums;
}
.fact span { display: block; margin-top: 8px; font-size: 12.5px; color: var(--text-3); }

/* ---------------- 产品卡片 ---------------- */
.p-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.p-grid-2 { grid-template-columns: repeat(2, 1fr); }

.p-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(24px, 2.6vw, 34px);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  transition: background .45s var(--ease);
}
.p-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(340px circle at 80% 0%, rgba(77, 157, 255, .16), transparent 62%);
  opacity: 0;
  transition: opacity .5s var(--ease);
  pointer-events: none;
}
.p-card:hover { background: rgba(255, 255, 255, .025); }
.p-card:hover::after { opacity: 1; }

.p-tag {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .18em;
  color: var(--text-3);
  transition: color .35s var(--ease);
}
.p-card:hover .p-tag { color: var(--accent); }

.p-card h3 {
  font-size: clamp(1.05rem, 1.5vw, 1.3rem);
  font-weight: 600;
  letter-spacing: -.01em;
}
.p-card p {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text-2);
}

.p-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding-top: 12px;
  font-size: 13px;
  color: var(--text-3);
  transition: color .35s var(--ease), gap .35s var(--ease);
}
.p-more svg {
  width: 15px; height: 15px;
  fill: none; stroke: currentColor; stroke-width: 1.9;
  stroke-linecap: round; stroke-linejoin: round;
}
.p-card:hover .p-more { color: var(--accent); gap: 12px; }

/* ---------------- 资讯列表 ---------------- */
.n-list { border-top: 1px solid var(--line); }

.n-item {
  display: grid;
  grid-template-columns: 118px 1fr 46px;
  align-items: center;
  gap: 22px;
  padding: clamp(20px, 2.2vw, 28px) 0;
  border-bottom: 1px solid var(--line);
  position: relative;
  transition: border-color .4s var(--ease);
}
.n-item::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(77, 157, 255, .08), transparent 60%);
  opacity: 0;
  transition: opacity .45s var(--ease);
  pointer-events: none;
}
.n-item:hover::before { opacity: 1; }

.n-date {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-3);
  letter-spacing: .04em;
  white-space: nowrap;
}
.n-body { position: relative; min-width: 0; }
.n-cat {
  display: inline-block;
  margin-bottom: 7px;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 11.5px;
  color: var(--accent);
  background: rgba(77, 157, 255, .1);
  border: 1px solid rgba(77, 157, 255, .22);
}
.n-body h3 {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  font-weight: 600;
  letter-spacing: -.01em;
  transition: color .3s var(--ease);
}
.n-item:hover .n-body h3 { color: #fff; }
.n-body p {
  margin-top: 7px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-3);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.n-arrow {
  justify-self: end;
  width: 44px; height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-2);
  border-radius: 50%;
  opacity: .4;
  transform: translateX(-6px);
  transition: opacity .4s var(--ease), transform .4s var(--ease),
              background .4s var(--ease), border-color .4s var(--ease);
}
.n-arrow svg {
  width: 16px; height: 16px;
  fill: none; stroke: var(--text); stroke-width: 1.8;
  stroke-linecap: round; stroke-linejoin: round;
}
.n-item:hover .n-arrow {
  opacity: 1;
  transform: none;
  background: rgba(77, 157, 255, .14);
  border-color: rgba(77, 157, 255, .5);
}

/* ---------------- 文章 ---------------- */
.article-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: clamp(32px, 4vw, 64px);
  align-items: start;
}

.article { min-width: 0; }
.article-cover {
  width: 100%;
  border-radius: 14px;
  margin-bottom: 28px;
  border: 1px solid var(--line);
}
.article-lead {
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.85;
  color: var(--text-2);
  padding-left: 18px;
  border-left: 2px solid rgba(77, 157, 255, .5);
  margin-bottom: 26px;
}

.prose { font-size: 15.5px; line-height: 1.95; color: var(--text-2); }
.prose p { margin: 0 0 18px; }
.prose h2, .prose h3, .prose h4 {
  color: var(--text);
  margin: 34px 0 14px;
  letter-spacing: -.01em;
}
.prose h3 { font-size: 1.15rem; }
/* 正文列表：必须显式恢复项目符号，否则被全站 li{list-style:none} 清空 */
.prose ul,
.prose ol {
  margin: 0 0 20px;
  padding-left: 22px;
}
.prose ul { list-style-type: disc; }
.prose ol { list-style-type: decimal; }
.prose li {
  list-style-type: inherit;
  display: list-item;
  margin-bottom: 9px;
  padding-left: 4px;
  line-height: 1.8;
}
.prose li::marker { color: var(--accent); }
.prose li > p { margin: 0 0 6px; }
.prose strong { color: var(--text); }
.prose a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.prose blockquote {
  margin: 22px 0;
  padding: 4px 0 4px 18px;
  border-left: 2px solid rgba(77, 157, 255, .5);
  color: var(--text-3);
}
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 26px 0; }

.back-link {
  display: inline-block;
  margin-top: 34px;
  font-size: 13.5px;
  color: var(--text-3);
  transition: color .3s var(--ease);
}
.back-link:hover { color: var(--accent); }

/* 侧栏卡片 */
.side-card {
  position: sticky;
  top: calc(var(--nav-h) + 24px);
  padding: 26px 24px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background:
    radial-gradient(120% 80% at 100% 0%, rgba(77, 157, 255, .12), transparent 60%),
    rgba(255, 255, 255, .02);
}
.side-card h3 { font-size: 1.05rem; margin: 12px 0 10px; }
.side-card p { font-size: 13.5px; line-height: 1.75; color: var(--text-2); margin-bottom: 18px; }
.side-card .btn { width: 100%; }
.side-phone {
  margin-top: 16px !important;
  margin-bottom: 0 !important;
  font-family: var(--mono);
  font-size: 15px !important;
  color: var(--text) !important;
  text-align: center;
}

/* ---------------- 留言表单 ---------------- */
.form-section { border-top: 1px solid var(--line); }

.form-grid {
  display: grid;
  grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
  gap: clamp(32px, 5vw, 76px);
  align-items: start;
}
.form-intro .h2 { margin-top: 18px; }
.form-desc {
  margin-top: 18px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-2);
  max-width: 420px;
}

.form-contact {
  margin-top: 32px;
  border-top: 1px solid var(--line);
}
.form-contact li {
  display: flex;
  gap: 18px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}
.form-contact .k {
  flex: 0 0 48px;
  color: var(--text-3);
  font-size: 12.5px;
  letter-spacing: .12em;
  padding-top: 2px;
}
.form-contact a { color: var(--text); font-family: var(--mono); }
.form-contact a:hover { color: var(--accent); }

.form-card {
  padding: clamp(24px, 3vw, 36px);
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, .025);
}

.field { display: block; margin-bottom: 16px; }
.field > span {
  display: block;
  margin-bottom: 7px;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--text-3);
}
.field > span i { color: var(--accent); font-style: normal; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  font: inherit;
  font-size: 14.5px;
  color: var(--text);
  background: rgba(255, 255, 255, .04);
  border: 1px solid var(--line-2);
  border-radius: 10px;
  transition: border-color .25s var(--ease), background .25s var(--ease),
              box-shadow .25s var(--ease);
}
.field input::placeholder, .field textarea::placeholder { color: var(--text-3); opacity: .7; }
.field select { appearance: none; background-image: none; }
.field select option { background: #0d1322; color: var(--text); }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: rgba(77, 157, 255, .75);
  background: rgba(255, 255, 255, .06);
  box-shadow: 0 0 0 3px rgba(77, 157, 255, .16);
}
.field textarea { resize: vertical; min-height: 96px; }

.form-submit { width: 100%; margin-top: 8px; }
.form-note {
  margin-top: 14px;
  font-size: 12.5px;
  color: var(--text-3);
  text-align: center;
}

/* 蜜罐字段：肉眼不可见，避免被机器人填写 */
.hp {
  position: absolute;
  left: -9999px;
  width: 1px; height: 1px;
  overflow: hidden;
}

.notice {
  padding: 13px 16px;
  border-radius: 10px;
  font-size: 13.5px;
  margin-bottom: 18px;
  line-height: 1.6;
}
.notice-ok {
  background: rgba(18, 148, 90, .14);
  border: 1px solid rgba(18, 148, 90, .35);
  color: #6ee7b7;
}
.notice-err {
  background: rgba(217, 45, 32, .12);
  border: 1px solid rgba(217, 45, 32, .35);
  color: #fca5a5;
}

/* ---------------- 合作招募 ---------------- */
.coop-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.coop-card {
  position: relative;
  padding: clamp(26px, 3vw, 38px);
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, .02);
  overflow: hidden;
  transition: border-color .4s var(--ease), background .4s var(--ease),
              transform .4s var(--ease), box-shadow .4s var(--ease);
}
.coop-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(320px circle at 85% 0%, rgba(77, 157, 255, .16), transparent 62%);
  opacity: 0;
  transition: opacity .5s var(--ease);
  pointer-events: none;
}
.coop-card:hover {
  transform: translateY(-4px);
  border-color: rgba(77, 157, 255, .35);
  background: rgba(255, 255, 255, .035);
  box-shadow: 0 30px 60px -34px rgba(0, 0, 0, .9);
}
.coop-card:hover::after { opacity: 1; }

.coop-idx {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--accent);
}
.coop-card h3 {
  margin: 14px 0 10px;
  font-size: clamp(1.05rem, 1.6vw, 1.3rem);
  font-weight: 600;
}
.coop-card p { font-size: 14px; line-height: 1.8; color: var(--text-2); }

.coop-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  margin-top: 48px;
  padding-top: 34px;
  border-top: 1px solid var(--line);
}
.coop-cta p { margin-top: 12px; font-size: 14.5px; color: var(--text-2); }

/* ---------------- 联系页 ---------------- */
.contact-info {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: clamp(36px, 6vw, 110px);
  align-items: start;
}

/* ---------------- 404 / 500 ---------------- */
.err-code {
  font-family: var(--mono);
  font-size: clamp(4rem, 12vw, 7rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -.04em;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 18px;
}
.err-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 28px;
  flex-wrap: wrap;
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 1080px) {
  .p-grid { grid-template-columns: repeat(2, 1fr); }
  .article-grid { grid-template-columns: 1fr; }
  .side-card { position: static; }
  .form-grid { grid-template-columns: 1fr; gap: 34px; }
  .fact-grid { grid-template-columns: repeat(2, 1fr); row-gap: 22px; }
  .fact:nth-child(3) { border-left: 0; padding-left: 0; }
  .contact-info { grid-template-columns: 1fr; gap: 36px; }
  .coop-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .p-grid, .p-grid-2 { grid-template-columns: 1fr; }
  .n-item { grid-template-columns: 1fr 40px; gap: 14px; }
  .n-date { grid-column: 1 / -1; }
  .n-arrow { width: 38px; height: 38px; }
  .field-row { grid-template-columns: 1fr; }
  .sec-head-split { align-items: flex-start; }
  .more-link { align-self: flex-start; }
  .coop-cta { flex-direction: column; align-items: flex-start; }
  .coop-cta .btn { width: 100%; }
  .article-lead { font-size: 15px; }
}

/* ---------------- 页脚（三栏 + 公众号二维码） ---------------- */
.footer {
  padding: clamp(40px, 5vw, 66px) 0 24px;
  border-top: 1px solid var(--line);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: clamp(28px, 5vw, 88px);
  align-items: start;
  padding-bottom: clamp(28px, 3.6vw, 44px);
  border-bottom: 1px solid var(--line);
}

.footer-desc {
  margin-top: 18px;
  max-width: 360px;
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--text-3);
}

.footer-contact {
  margin-top: 22px;
  display: flex;
  flex-direction: column;
  gap: 11px;
}
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--text-2);
}
.footer-contact li svg {
  flex: 0 0 15px;
  width: 15px; height: 15px;
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: .9;
}
.footer-contact a { transition: color .28s var(--ease); }
.footer-contact a:hover { color: var(--accent); }

.footer-nav {
  display: grid;
  grid-template-columns: repeat(2, auto);
  gap: 12px 34px;
  justify-content: start;
  padding-top: 6px;
  font-size: 13.5px;
  color: var(--text-2);
}
.footer-nav a {
  transition: color .28s var(--ease), transform .28s var(--ease);
  white-space: nowrap;
}
.footer-nav a:hover { color: var(--accent); transform: translateX(3px); }

.footer-qr {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.footer-qr img {
  width: 104px;
  height: 104px;
  padding: 5px;
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 14px 30px -18px rgba(0, 0, 0, .9);
  transition: transform .35s var(--ease);
}
.footer-qr:hover img { transform: translateY(-3px) scale(1.02); }
.footer-qr span {
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--text-3);
  white-space: nowrap;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px 22px;
  flex-wrap: wrap;
  padding-top: 22px;
}
.footer-copy, .footer-legal { font-size: 12.5px; color: var(--text-3); }
.footer-legal { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.footer-legal a { transition: color .28s var(--ease); }
.footer-legal a:hover { color: var(--text-2); }

@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 14px 20px;
  }
  .footer-qr { align-items: flex-start; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* ==========================================================================
   解决方案
   ========================================================================== */
.sol-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.sol-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(26px, 3vw, 38px);
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, .02);
  overflow: hidden;
  transition: transform .45s var(--ease), border-color .45s var(--ease),
              background .45s var(--ease), box-shadow .45s var(--ease);
}
.sol-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(360px circle at 82% 0%, rgba(77, 157, 255, .16), transparent 62%);
  opacity: 0;
  transition: opacity .5s var(--ease);
  pointer-events: none;
}
.sol-card:hover {
  transform: translateY(-5px);
  border-color: rgba(77, 157, 255, .35);
  background: rgba(255, 255, 255, .035);
  box-shadow: 0 34px 64px -36px rgba(0, 0, 0, .95);
}
.sol-card:hover::after { opacity: 1; }

.sol-icon {
  width: 52px; height: 52px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: linear-gradient(140deg, rgba(63, 216, 232, .14), rgba(75, 123, 255, .16));
  border: 1px solid rgba(77, 157, 255, .22);
  transition: transform .45s var(--ease);
}
.sol-icon svg {
  width: 24px; height: 24px;
  fill: none; stroke: var(--accent); stroke-width: 1.6;
  stroke-linecap: round; stroke-linejoin: round;
}
.sol-card:hover .sol-icon { transform: scale(1.06) rotate(-3deg); }
.sol-icon.sm { width: 44px; height: 44px; margin-bottom: 24px; }
.sol-icon.sm svg { width: 21px; height: 21px; }

.sol-tag {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .18em;
  color: var(--text-3);
  transition: color .35s var(--ease);
}
.sol-card:hover .sol-tag { color: var(--accent); }

.sol-card h3 {
  font-size: clamp(1.1rem, 1.6vw, 1.35rem);
  font-weight: 600;
  letter-spacing: -.01em;
}
.sol-summary {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text-2);
}

.sol-points {
  display: flex;
  flex-direction: column;
  gap: 9px;
  margin-top: 4px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
.sol-points li {
  display: flex;
  gap: 9px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-2);
}
.sol-points li svg {
  flex: 0 0 15px;
  width: 15px; height: 15px;
  margin-top: 3px;
  fill: none; stroke: var(--accent); stroke-width: 2.2;
  stroke-linecap: round; stroke-linejoin: round;
}
.sol-points.tight { margin-top: 0; padding-top: 0; border-top: 0; }

.sol-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding-top: 14px;
  font-size: 13px;
  color: var(--text-3);
  transition: color .35s var(--ease), gap .35s var(--ease);
}
.sol-more svg {
  width: 15px; height: 15px;
  fill: none; stroke: currentColor; stroke-width: 1.9;
  stroke-linecap: round; stroke-linejoin: round;
}
.sol-card:hover .sol-more { color: var(--accent); gap: 12px; }

.sol-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  margin-top: 44px;
  padding: 30px clamp(22px, 3vw, 38px);
  border: 1px solid var(--line);
  border-radius: 18px;
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(77, 157, 255, .14), transparent 62%),
    rgba(255, 255, 255, .02);
}
.sol-cta p { margin-top: 10px; font-size: 14.5px; color: var(--text-2); }

.sol-body-head { margin-bottom: 8px; }

/* ==========================================================================
   资讯卡片流
   ========================================================================== */
.n-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.n-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  background: rgba(255, 255, 255, .02);
  transition: transform .45s var(--ease), border-color .45s var(--ease),
              box-shadow .45s var(--ease);
}
.n-card:hover {
  transform: translateY(-5px);
  border-color: rgba(77, 157, 255, .32);
  box-shadow: 0 32px 60px -34px rgba(0, 0, 0, .95);
}

.n-cover {
  position: relative;
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #0c1220;
}
.n-cover img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .9s var(--ease);
}
.n-card:hover .n-cover img { transform: scale(1.05); }

/* 没有封面图时的占位：渐变 + 分类文字 */
.n-cover-ph {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .24em;
  color: rgba(200, 222, 255, .55);
  background:
    radial-gradient(120% 120% at 20% 10%, rgba(63, 216, 232, .18), transparent 58%),
    radial-gradient(120% 120% at 88% 90%, rgba(75, 123, 255, .22), transparent 60%),
    linear-gradient(150deg, #0d1526, #080d18);
}
.n-cover-ph::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(120, 160, 255, .07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(120, 160, 255, .07) 1px, transparent 1px);
  background-size: 26px 26px;
  -webkit-mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, #000, transparent 80%);
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, #000, transparent 80%);
}

.n-card .n-cat {
  position: absolute;
  left: 14px;
  top: 14px;
  z-index: 2;
  margin: 0;
  padding: 3px 10px;
  font-size: 11px;
  border-radius: 999px;
  color: #dff0ff;
  background: rgba(8, 12, 22, .68);
  border: 1px solid rgba(255, 255, 255, .22);
  backdrop-filter: blur(8px);
}

.n-card .n-meta {
  display: block;
  padding: 20px 22px 0;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--text-3);
}
.n-card h3 {
  padding: 8px 22px 0;
  font-size: clamp(1rem, 1.4vw, 1.12rem);
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: -.01em;
  transition: color .3s var(--ease);
}
.n-card:hover h3 { color: #fff; }
.n-card p {
  padding: 10px 22px 22px;
  font-size: 13px;
  line-height: 1.72;
  color: var(--text-3);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

@media (max-width: 1080px) {
  .sol-grid { grid-template-columns: 1fr; }
  .n-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .n-grid { grid-template-columns: 1fr; }
  .sol-cta { flex-direction: column; align-items: flex-start; }
  .sol-cta .btn { width: 100%; }
}