/* ============================================================
   五量度 · 文章页 Apple 流体视觉层（2026-11-12）
   作用域 .artpage，复用 home-apple.css 设计令牌与 .ah-* 组件。
   原则：不大篇幅堆文字、能用图用图、动画活跃氛围、布局不留大白、
   行距合理无交叉覆盖、图片清晰、品牌出现处必配 logo。
   ============================================================ */

.artpage { background: var(--ah-paper); }
.artpage .container { max-width: 1120px; }

/* 跳转链接：屏幕外，聚焦时显现（可达性） */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.art-skip:focus, .sr-only:focus {
  position: fixed; left: 16px; top: 12px; width: auto; height: auto;
  clip: auto; z-index: 200; padding: 10px 16px; border-radius: 10px;
  background: var(--ah-deep); color: #fff; font-weight: 600; font-size: 14px;
  box-shadow: var(--ah-shadow-2); text-decoration: none;
}

/* ============ 首屏：满幅服务场景图 + 玻璃字幕 ============ */
.art-hero {
  position: relative; overflow: hidden; isolation: isolate;
  min-height: clamp(420px, 56vh, 600px);
  display: flex; align-items: flex-end;
  padding: clamp(64px, 9vw, 120px) 0 clamp(40px, 5vw, 64px);
}
.art-hero-photo { position: absolute; inset: 0; z-index: -2; }
.art-hero-photo img {
  width: 100%; height: 100%; object-fit: cover; display: block;
  transform: scale(1.04); transition: transform 8s ease-out;
}
.art-hero.is-in .art-hero-photo img { transform: scale(1); }
.art-hero-grad {
  position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background:
    linear-gradient(180deg, rgba(8,22,38,.18) 0%, rgba(8,22,38,.02) 34%, rgba(8,22,38,.74) 100%),
    linear-gradient(90deg, rgba(8,22,38,.62) 0%, rgba(8,22,38,.18) 58%, rgba(8,22,38,0) 100%);
}
.art-hero-inner { width: 100%; color: #fff; }
.art-hero .ah-eyebrow {
  background: rgba(255,255,255,.82);
  border-color: rgba(255,255,255,.5);
  color: var(--ah-deep);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
}
.art-hero h1 {
  margin: 18px 0 0; max-width: 16em;
  font-size: clamp(27px, 3.9vw, 50px); line-height: 1.16;
  font-weight: 800; letter-spacing: -.02em; color: #fff;
  text-shadow: 0 2px 24px rgba(4,16,30,.45);
}
.art-meta {
  display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px;
}
.art-meta .chip {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 7px 14px; border-radius: 999px;
  background: rgba(255,255,255,.16);
  border: 1px solid rgba(255,255,255,.28);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  font-size: 13px; color: #eaf3fb; font-weight: 500;
}
.art-meta .chip.tag { background: rgba(22,166,199,.9); border-color: transparent; color: #fff; }
.art-bread {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  margin-top: 18px; font-size: 13px; color: rgba(235,244,251,.78);
}
.art-bread a { color: rgba(235,244,251,.9); text-decoration: none; }
.art-bread a:hover { color: #fff; text-decoration: underline; }
.art-bread span { color: rgba(235,244,251,.5); }

/* ============ 正文阅读栏 ============ */
.art-col { max-width: 760px; margin: 0 auto; }
.art-lead {
  font-size: clamp(17px, 1.5vw, 20px); line-height: 1.86;
  color: var(--ah-ink); font-weight: 500;
  padding-bottom: 26px; margin-bottom: 8px;
  border-bottom: 1px solid var(--ah-line);
}

/* 章节：大号淡色序号 + 标题 + 正文 */
.art-sec-row { position: relative; padding: 30px 0 6px; }
.art-sec-row + .art-sec-row { margin-top: 8px; }
.art-sec-no {
  position: absolute; left: -6px; top: 14px;
  font-size: 60px; font-weight: 800; line-height: 1;
  color: rgba(22, 166, 199, .14); z-index: 0; user-select: none;
  letter-spacing: -.04em;
}
.art-sec-row h2 {
  position: relative; z-index: 1;
  margin: 0 0 14px; padding-left: 56px;
  font-size: clamp(21px, 2.3vw, 28px); line-height: 1.34;
  color: var(--ah-ink); letter-spacing: -.01em;
}
.art-sec-row h2::before {
  content: ""; position: absolute; left: 0; top: 14px;
  width: 38px; height: 3px; border-radius: 3px;
  background: linear-gradient(90deg, var(--ah-brand), var(--ah-accent));
}
.art-sec-row p { margin: 0 0 16px; font-size: 16.5px; line-height: 1.92; color: var(--ah-ink-2); }
.art-sec-row p b, .art-sec-row p strong { color: var(--ah-ink); font-weight: 700; }

/* 正文列表（保留源站 <ul>/<ol> 内容，避免纯文字堆叠） */
.art-sec-row ul.art-list, .art-sec-row ol.art-list { margin: 4px 0 18px; padding-left: 22px; }
.art-sec-row ul.art-list li, .art-sec-row ol.art-list li {
  margin: 9px 0; font-size: 16px; line-height: 1.85; color: var(--ah-ink-2);
}
.art-sec-row ul.art-list { list-style: none; padding-left: 4px; }
.art-sec-row ul.art-list li { position: relative; padding-left: 22px; }
.art-sec-row ul.art-list li::before {
  content: ""; position: absolute; left: 2px; top: 11px;
  width: 7px; height: 7px; border-radius: 50%;
  background: linear-gradient(135deg, var(--ah-brand), var(--ah-accent));
}
.art-sec-row ol.art-list { padding-left: 26px; }
.art-sec-row ol.art-list li::marker { color: var(--ah-brand); font-weight: 700; }
.art-sec-row ul.art-list li b, .art-sec-row ul.art-list li strong,
.art-sec-row ol.art-list li b, .art-sec-row ol.art-list li strong { color: var(--ah-ink); font-weight: 700; }

/* 本文要点卡（.geo-keypoints 的 Apple 化呈现） */
.art-keypoints {
  position: relative; margin: 22px 0 30px; padding: 20px 22px 20px 22px;
  background: linear-gradient(135deg, rgba(22,166,199,.08), rgba(244,167,44,.06));
  border: 1px solid var(--ah-line); border-left: 4px solid var(--ah-brand);
  border-radius: 14px; box-shadow: var(--ah-shadow-1);
}
.art-keypoints .art-kp-label {
  display: inline-block; margin-bottom: 10px; font-size: 13px; font-weight: 700;
  color: var(--ah-brand-deep); letter-spacing: .04em;
}
.art-keypoints ul { margin: 0; padding-left: 20px; list-style: none; }
.art-keypoints li { position: relative; padding-left: 20px; margin: 8px 0; font-size: 15.5px; line-height: 1.8; color: var(--ah-ink-2); }
.art-keypoints li::before {
  content: ""; position: absolute; left: 2px; top: 10px;
  width: 6px; height: 6px; border-radius: 50%; background: var(--ah-brand);
}
.art-keypoints li b, .art-keypoints li strong { color: var(--ah-ink); }

/* 文中要点卡（把建议性段落变成视觉块，避免纯文字堆叠） */
.art-tip {
  position: relative; margin: 22px 0 26px; padding: 20px 22px 20px 64px;
  background: linear-gradient(135deg, rgba(22,166,199,.10), rgba(244,167,44,.08));
  border: 1px solid var(--ah-line); border-radius: 16px;
  box-shadow: var(--ah-shadow-1);
}
.art-tip::before {
  content: "💡"; position: absolute; left: 20px; top: 18px; font-size: 24px;
}
.art-tip p { margin: 0; font-size: 16px; line-height: 1.85; color: var(--ah-ink); }
.art-tip b { color: var(--ah-brand-deep); }

/* 文中配图：满栏、圆角、阴影、清晰，配图注，绝不露大白边 */
.art-fig { margin: 30px 0; }
.art-fig .art-fig-frame {
  border-radius: 18px; overflow: hidden; box-shadow: var(--ah-shadow-2);
  background: var(--ah-paper-2);
}
.art-fig img { width: 100%; height: auto; display: block; }
.art-fig figcaption {
  margin-top: 12px; font-size: 13.5px; color: var(--ah-ink-3);
  text-align: center; line-height: 1.7;
}
.art-fig figcaption b { color: var(--ah-ink-2); }

/* CTA 卡：醒目渐变 + 大号热线 + 双按钮 */
.art-cta {
  position: relative; overflow: hidden;
  margin: 36px 0 8px; padding: clamp(26px, 3.4vw, 40px);
  border-radius: 22px; color: #fff;
  background: linear-gradient(135deg, var(--ah-deep) 0%, var(--ah-deep-2) 100%);
  box-shadow: var(--ah-shadow-2);
}
.art-cta::after {
  content: ""; position: absolute; right: -60px; top: -80px;
  width: 260px; height: 260px; border-radius: 50%;
  background: radial-gradient(circle, rgba(22,166,199,.45), transparent 70%);
  pointer-events: none;
}
.art-cta .lab { display: block; font-size: 15px; color: #cfe3ef; }
.art-cta .tel-big {
  display: inline-block; margin: 8px 0 4px;
  font-size: clamp(30px, 4.4vw, 46px); font-weight: 800; color: #fff;
  text-decoration: none; letter-spacing: -.02em;
}
.art-cta .sub { display: block; font-size: 13.5px; color: #9fc0d2; margin-bottom: 18px; }
.art-cta .row { display: flex; flex-wrap: wrap; gap: 12px; }
.art-cta .row a {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 22px; border-radius: 999px; font-weight: 600; font-size: 14.5px;
  text-decoration: none; transition: transform .25s var(--ah-spring), box-shadow .25s;
}
.art-cta .row a:first-child { background: #fff; color: var(--ah-deep); }
.art-cta .row a.ghost { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.4); }
.art-cta .row a:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(0,0,0,.28); }

/* 标签 + 返回 */
.art-foot { margin-top: 30px; padding-top: 22px; border-top: 1px solid var(--ah-line); }
.art-tags { display: flex; flex-wrap: wrap; gap: 9px; }
.art-tags span {
  padding: 6px 13px; border-radius: 999px; font-size: 13px;
  background: var(--ah-paper-2); border: 1px solid var(--ah-line); color: var(--ah-ink-2);
}
.art-back { display: inline-flex; align-items: center; gap: 6px; margin-top: 18px;
  font-size: 14.5px; color: var(--ah-brand-deep); text-decoration: none; font-weight: 600; }
.art-back:hover { text-decoration: underline; }

/* ============ FAQ（复用 .ah-acc 交互，这里只做容器微调） ============ */
.artpage .ah-acc { max-width: 820px; margin: 0 auto; }
.artpage .ah-acc summary { font-size: 16px; padding: 18px 4px; }
.artpage .ah-acc .ans p { font-size: 15px; }

/* ============ 服务要素速览（.geo-cite 轻量重排版） ============ */
.artpage .geo-cite.svc-facts { max-width: 860px; margin: 0 auto; }
.artpage .geo-cite.svc-facts h2 { font-size: clamp(21px, 2.3vw, 27px); color: var(--ah-ink); }
.artpage .geo-tbl, .artpage .svc-tbl { width: 100%; border-collapse: collapse; margin: 14px 0 22px;
  background: #fff; border-radius: 14px; overflow: hidden; box-shadow: var(--ah-shadow-1); }
.artpage .geo-tbl th, .artpage .geo-tbl td, .artpage .svc-tbl th, .artpage .svc-tbl td {
  padding: 13px 16px; border-bottom: 1px solid var(--ah-line); font-size: 14.5px; text-align: left; }
.artpage .geo-tbl th, .artpage .svc-tbl th { background: var(--ah-paper-2); color: var(--ah-ink); font-weight: 700; width: 32%; }
.artpage .svc-flow { margin: 6px 0 0; padding-left: 22px; }
.artpage .svc-flow li { margin: 9px 0; line-height: 1.8; color: var(--ah-ink-2); font-size: 14.5px; }
.artpage .svc-author { margin-top: 16px; font-size: 13px; color: var(--ah-ink-3); }

/* ============ 品牌识别带（深色 · 白色圆角托片全彩 logo） ============ */
.art-band { position: relative; overflow: hidden;
  background: linear-gradient(135deg, var(--ah-deep) 0%, var(--ah-deep-2) 100%);
  color: #fff; padding: clamp(48px, 6vw, 84px) 0; }
.art-band::before {
  content: ""; position: absolute; left: -80px; bottom: -120px;
  width: 360px; height: 360px; border-radius: 50%;
  background: radial-gradient(circle, rgba(22,166,199,.4), transparent 70%); pointer-events: none;
}
.art-band-grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: clamp(28px, 4vw, 60px); align-items: center; }
.art-band-card {
  background: #fff; border-radius: 22px; padding: 30px 28px; text-align: center;
  box-shadow: 0 24px 60px rgba(0,0,0,.3);
}
.art-band-card .art-band-logo { display: inline-block; }
.art-band-card .art-band-logo img { width: 120px; height: auto; display: block; }
.art-band-name { margin: 16px 0 4px; font-size: 18px; font-weight: 800; color: var(--ah-ink); }
.art-band-tag { margin: 0; font-size: 13px; color: var(--ah-ink-2); }
.art-band-side { color: #fff; }
.art-band-side .ah-kicker { color: #7fd4e6; }
.art-band-side h2 { margin: 14px 0 0; font-size: clamp(22px, 2.6vw, 32px); line-height: 1.3; color: #fff; }
.art-band-side p { margin: 12px 0 0; font-size: 15px; line-height: 1.85; color: #bcd4e2; }
.art-band-nums { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin: 22px 0 0; }
.art-band-num {
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.16);
  border-radius: 14px; padding: 14px 12px; text-align: center; transition: transform .25s var(--ah-spring), background .25s;
}
.art-band-num:hover { background: rgba(255,255,255,.14); transform: translateY(-3px); }
.art-band-num b { display: block; font-size: 22px; font-weight: 800; color: #fff; line-height: 1.2; }
.art-band-num span { display: block; margin-top: 4px; font-size: 12px; color: #9fb6ca; }
.art-band-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.art-band-cta .ah-btn { padding: 13px 24px; border-radius: 999px; font-weight: 600; font-size: 14.5px; text-decoration: none;
  transition: transform .25s var(--ah-spring), box-shadow .25s; }
.art-band-cta .ah-btn--glass { background: #fff; color: var(--ah-deep); }
.art-band-cta .ah-btn--glass:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(0,0,0,.3); }
.art-band-cta .ah-btn--ghost { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.45); }
.art-band-cta .ah-btn--ghost:hover { background: rgba(255,255,255,.12); transform: translateY(-2px); }

/* 桌面端避让全站固定客服栏 */
@media (min-width: 1025px) {
  .art-hero, .art-band, .art-cta-wrap { padding-right: 56px; }
  .artpage .ah-faq, .artpage .geo-cite.svc-facts { padding-right: 56px; }
}

/* 移动端 */
@media (max-width: 1024px) {
  .art-band-grid { grid-template-columns: minmax(0, 1fr); }
  .art-sec-row h2 { padding-left: 0; }
  .art-sec-no { display: none; }
  .art-sec-row h2::before { display: none; }
  .art-sec-row h2 { padding-left: 0; }
}

/* 减弱动效 */
@media (prefers-reduced-motion: reduce) {
  .art-hero-photo img { transform: none !important; transition: none !important; }
  .art-hero.is-in .art-hero-photo img { transform: none !important; }
  .art-tip { transition: none; }
}