/* ============================================================
   永康市众视摄影工作室 - 官网样式 V4「黑 · 电光」
   参考 RunningHub：纯黑底 · 直角卡片 · 细描边 · 单一荧光绿点睛
   ============================================================ */
:root {
  --bg: #000000;
  --bg2: #0a0a0b;
  --surface: #101012;
  --surface2: #17171a;
  --text: #f5f5f2;
  --text2: rgba(255, 255, 255, .66);
  --muted: rgba(255, 255, 255, .44);
  --accent: #ccff00;
  --accent-hi: #ddff4d;
  --accent-dim: rgba(204, 255, 0, .1);
  --line: rgba(255, 255, 255, .09);
  --line2: rgba(255, 255, 255, .22);
  --sans: "Inter", -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  --serif: var(--sans);
  --shadow: 0 34px 90px rgba(0, 0, 0, .8);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; color-scheme: dark; }
body { background: var(--bg); color: var(--text); font-family: var(--sans); line-height: 1.75; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
::selection { background: var(--accent); color: #000; }
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: #000; }
::-webkit-scrollbar-thumb { background: #26262a; }
::-webkit-scrollbar-thumb:hover { background: #3a3a40; }

img { max-width: 100%; display: block; }
a { color: var(--text2); text-decoration: none; transition: color .2s; }
a:hover { color: var(--accent); }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ---------- 顶栏 ---------- */
.site-head { position: sticky; top: 0; z-index: 90; background: rgba(0,0,0,.72); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); border-bottom: 1px solid var(--line); }
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 13px; }
.brand-mark { width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; font-family: var(--sans); font-weight: 800; font-size: 21px; color: var(--accent); border: 1px solid rgba(204,255,0,.5); background: #0c0f06; flex: none; }
.brand-name { font-size: 19px; font-weight: 700; letter-spacing: 2px; color: var(--text); line-height: 1.25; }
.brand-sub { display: block; font-size: 10px; letter-spacing: 2.5px; color: var(--muted); }
.nav { display: flex; gap: 4px; }
.nav a { position: relative; color: var(--text2); padding: 9px 14px; font-size: 14.5px; letter-spacing: .5px; border-radius: 6px; }
.nav a:hover { color: var(--text); background: rgba(255,255,255,.05); }
.nav a.on { color: var(--accent); font-weight: 700; }
.nav a.on::after { content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px; height: 2px; background: var(--accent); border-radius: 1px; }

/* ---------- 按钮 ---------- */
.btn { display: inline-block; padding: 12px 30px; font-size: 14.5px; font-weight: 600; letter-spacing: 1px; border-radius: 8px; border: 1px solid var(--line2); color: var(--text); background: transparent; transition: all .25s; cursor: pointer; }
.btn:hover { border-color: var(--accent); color: var(--accent); box-shadow: 0 0 26px rgba(204,255,0,.16); }
.btn.solid { background: var(--accent); color: #000; border-color: var(--accent); font-weight: 800; }
.btn.solid:hover { background: var(--accent-hi); color: #000; box-shadow: 0 0 32px rgba(204,255,0,.3); }
.btn.ghost { border-color: rgba(255,255,255,.22); color: var(--text); }
.btn.ghost:hover { border-color: var(--accent); color: var(--accent); background: transparent; box-shadow: none; }

/* ---------- Hero V4：黑底左文右图 ---------- */
.hero { position: relative; padding: 96px 0 0; overflow: hidden; background:
  radial-gradient(900px 480px at 88% -10%, rgba(204,255,0,.07), transparent 60%), #000; }
.hero .wrap { position: relative; z-index: 2; }
.hero-cols { display: grid; grid-template-columns: 1.06fr .94fr; gap: 72px; align-items: center; padding-bottom: 88px; }

.hero-kicker { display: flex; align-items: center; gap: 12px; color: var(--accent); font-size: 12.5px; font-weight: 600; letter-spacing: 4px; margin-bottom: 26px; }
.hero-kicker::before { content: ""; width: 34px; height: 2px; background: var(--accent); }
.hero h1 { font-size: clamp(36px, 5vw, 58px); font-weight: 800; line-height: 1.24; letter-spacing: .5px; color: var(--text); }
.hero h1 .gold { color: var(--accent); }
.hero h1 .thin { font-weight: 400; color: var(--muted); font-size: .5em; letter-spacing: 3px; display: inline-block; margin-top: 12px; }
.hero p.lead { margin-top: 24px; font-size: 16px; color: var(--text2); max-width: 560px; line-height: 2; }
.hero-actions { margin-top: 36px; display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.hero-tel { margin-left: 6px; font-size: 22px; font-weight: 800; letter-spacing: 1px; color: var(--text); }
.hero-tel small { display: block; font-size: 11px; font-weight: 400; letter-spacing: 3px; color: var(--muted); }
.hero-chips { margin-top: 34px; display: flex; gap: 8px; flex-wrap: wrap; }
.hero-chips span { font-size: 12px; color: var(--text2); border: 1px solid var(--line); padding: 6px 14px; border-radius: 40px; letter-spacing: 1px; transition: .2s; }
.hero-chips span:hover { border-color: rgba(204,255,0,.55); color: var(--accent); }

/* 右图媒体组合 */
.hero-media { position: relative; }
.hero-media .pic-main { position: relative; border-radius: 10px; overflow: hidden; box-shadow: var(--shadow); outline: 1px solid rgba(255,255,255,.1); }
.hero-media .pic-main img { width: 100%; height: 430px; object-fit: cover; }
.hero-media .pic-main::after { content: ""; position: absolute; inset: 0; background: linear-gradient(200deg, transparent 50%, rgba(0,0,0,.72)); }
.hero-media .pic-cap { position: absolute; left: 0; right: 0; bottom: 0; padding: 22px 24px; z-index: 2; display: flex; justify-content: space-between; align-items: flex-end; gap: 10px; }
.hero-media .pic-cap b { font-size: 17px; font-weight: 700; letter-spacing: 1px; color: #fff; }
.hero-media .pic-cap span { font-size: 11px; letter-spacing: 2px; color: var(--accent); white-space: nowrap; }
.hero-media .pic-sub { position: absolute; right: -16px; bottom: -20px; width: 196px; height: 130px; object-fit: cover; border-radius: 8px; border: 6px solid #000; box-shadow: var(--shadow); z-index: 3; transform: rotate(2.2deg); }
.hero-media .seal { position: absolute; top: -16px; left: -16px; width: 78px; height: 78px; border-radius: 50%; color: var(--accent); border: 1px solid rgba(204,255,0,.6); background: rgba(0,0,0,.75); display: grid; place-items: center; text-align: center; font-weight: 800; font-size: 13.5px; letter-spacing: 1px; line-height: 1.25; box-shadow: 0 0 28px rgba(204,255,0,.22); z-index: 4; }

/* ---------- 区块通用 ---------- */
.section { padding: 92px 0; }
.section.alt { background: var(--bg2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.sec-head { margin-bottom: 48px; max-width: 780px; }
.sec-head .kicker { display: flex; align-items: center; gap: 12px; color: var(--accent); font-size: 12px; font-weight: 600; letter-spacing: 4px; }
.sec-head .kicker::before { content: ""; width: 28px; height: 2px; background: var(--accent); }
.sec-head h2 { font-size: clamp(26px, 3.4vw, 40px); font-weight: 800; letter-spacing: .5px; color: var(--text); margin-top: 12px; line-height: 1.35; }
.sec-head p { color: var(--text2); margin-top: 14px; font-size: 15.5px; }
.sec-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.sec-head.center .kicker { justify-content: center; }
.sec-head.center .kicker::after { content: ""; width: 28px; height: 2px; background: var(--accent); }

/* ---------- 数字条 ---------- */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); border: 1px solid var(--line); border-radius: 12px; background: var(--surface); overflow: hidden; }
.stat { padding: 36px 18px; text-align: center; }
.stat + .stat { border-left: 1px solid var(--line); }
.stat b { font-size: 44px; font-weight: 800; color: var(--accent); display: block; line-height: 1.2; letter-spacing: -1px; }
.stat span { color: var(--muted); font-size: 12.5px; letter-spacing: 2px; }
.stat p { color: var(--text2); }

/* ---------- 服务卡 ---------- */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); gap: 18px; }
.card { position: relative; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 0 0 28px; box-shadow: inset 0 1px 0 rgba(255,255,255,.05); transition: transform .25s, border-color .25s, background .25s; overflow: hidden; }
.card .ph { position: relative; height: 172px; overflow: hidden; background: #0b0b0d; }
.card .ph img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.card:hover .ph img { transform: scale(1.06); }
.card .no { font-size: 12.5px; font-weight: 600; letter-spacing: 3px; color: var(--muted); padding: 26px 28px 0; }
.card::before { content: ""; position: absolute; left: 0; top: 22px; bottom: 22px; width: 3px; border-radius: 2px; background: var(--accent); opacity: 0; transition: opacity .25s; z-index: 2; }
.card:hover { transform: translateY(-4px); border-color: var(--accent); background: var(--surface2); }
.card:hover::before { opacity: 1; }
.card h3 { font-size: 20px; font-weight: 700; letter-spacing: .5px; color: var(--text); margin: 10px 0 12px; padding: 0 28px; }
.card p { color: var(--text2); font-size: 14.5px; padding: 0 28px; }
.card .tags { margin-top: 18px; display: flex; gap: 8px; flex-wrap: wrap; padding: 0 28px; }
.tag { font-size: 11.5px; color: var(--text2); border: 1px solid var(--line); border-radius: 40px; padding: 3px 13px; letter-spacing: 1px; transition: .2s; }
.tag:hover { border-color: var(--accent); color: var(--accent); }
.card .more { display: inline-block; margin: 16px 28px 0; font-size: 13px; font-weight: 600; letter-spacing: 1.5px; color: var(--accent); border-bottom: 1px solid transparent; }
.card .more:hover { border-bottom-color: var(--accent); }

.card.ai .ph { border-bottom: 1px solid rgba(204,255,0,.3); }
.card.ai { background: linear-gradient(180deg, #0c0f05, var(--surface) 65%); border-color: rgba(204,255,0,.34); }
.card.ai::before { opacity: 1; }
.card.ai .no { color: rgba(204,255,0,.7); }
.card.ai:hover { border-color: var(--accent); }
.card.ai .ai-mark { position: absolute; right: 16px; top: 14px; font-size: 10.5px; font-weight: 700; letter-spacing: 2.5px; color: var(--accent); border: 1px solid rgba(204,255,0,.55); background: rgba(0,0,0,.6); padding: 3px 10px; border-radius: 6px; z-index: 2; backdrop-filter: blur(4px); }
.card.ai .tag { border-color: rgba(204,255,0,.3); color: rgba(204,255,0,.85); }

/* AI 说明横幅 */
.ai-banner { margin-top: 30px; display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; padding: 20px 26px; border: 1px dashed rgba(204,255,0,.4); background: rgba(204,255,0,.05); border-radius: 12px; }
.ai-banner p { color: var(--text2); font-size: 14.5px; }
.ai-banner p b { color: var(--accent); font-weight: 700; }
.ai-banner .btn { padding: 10px 24px; font-size: 13.5px; }

/* ---------- 案例 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(350px, 1fr)); gap: 20px; }
.case { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; transition: transform .25s, border-color .25s; }
.case:hover { transform: translateY(-4px); border-color: var(--accent); }
.case .ph { position: relative; overflow: hidden; }
.case img { width: 100%; height: 250px; object-fit: cover; transition: transform .6s ease; }
.case:hover img { transform: scale(1.05); }
.case figcaption { padding: 20px 22px 24px; position: relative; }
.case figcaption::before { content: ""; position: absolute; left: 22px; top: 0; width: 34px; height: 2px; background: var(--accent); }
.case h3 { font-size: 17px; font-weight: 700; color: var(--text); letter-spacing: .5px; }
.case p { font-size: 13.5px; color: var(--text2); margin-top: 5px; }

/* ---------- FAQ ---------- */
.faqs { max-width: 920px; }
.faq { border: 1px solid var(--line); border-radius: 12px; margin-bottom: 12px; background: var(--surface); overflow: hidden; transition: border-color .25s; }
.faq[open] { border-color: rgba(204,255,0,.5); }
.faq summary { cursor: pointer; padding: 19px 24px; font-size: 16px; color: var(--text); list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 14px; font-weight: 500; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--accent); font-size: 22px; line-height: 1; transition: transform .3s; flex: none; font-weight: 400; }
.faq[open] summary::after { content: "−"; }
.faq .faq-body { padding: 2px 24px 22px; color: var(--text2); font-size: 14.5px; }
.faq .faq-body a { color: var(--accent); }
.faq .faq-body a:hover { text-decoration: underline; }

/* ---------- 联系带 / 页脚 ---------- */
.contact-band { background: var(--bg2); border-top: 1px solid var(--line); }
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 44px; }
.contact-grid h3 { font-size: 17px; font-weight: 700; letter-spacing: 2px; color: var(--text); margin-bottom: 16px; position: relative; padding-bottom: 12px; }
.contact-grid h3::after { content: ""; position: absolute; left: 0; bottom: 0; width: 26px; height: 2px; background: var(--accent); }
.contact-grid li { list-style: none; color: var(--text2); font-size: 14.5px; margin-bottom: 9px; }
.contact-grid a { color: var(--accent); }
.site-foot { border-top: 1px solid var(--line); padding: 26px 0 34px; text-align: center; color: var(--muted); font-size: 13px; }
.site-foot .icp { margin-top: 5px; opacity: .8; }

/* ---------- 内页头 ---------- */
.page-head { padding: 82px 0 56px; border-bottom: 1px solid var(--line); background:
  radial-gradient(700px 340px at 92% -30%, rgba(204,255,0,.06), transparent 60%), #000; }
.page-head .kicker { display: flex; align-items: center; gap: 12px; color: var(--accent); font-size: 12px; font-weight: 600; letter-spacing: 4px; }
.page-head .kicker::before { content: ""; width: 28px; height: 2px; background: var(--accent); }
.page-head h1 { font-size: clamp(28px, 4.2vw, 46px); font-weight: 800; color: var(--text); margin-top: 14px; letter-spacing: .5px; line-height: 1.35; }
.page-head p { color: var(--text2); margin-top: 14px; max-width: 780px; font-size: 15.5px; }

/* ---------- 服务明细 ---------- */
.service-detail { display: grid; gap: 16px; max-width: 980px; }
.sd-item { background: var(--surface); border: 1px solid var(--line); border-left: 3px solid var(--accent); border-radius: 12px; padding: 28px 30px; transition: border-color .25s, background .25s; }
.sd-item:hover { background: var(--surface2); border-color: var(--line2); }
.sd-item .sd-ph { position: relative; height: 230px; margin: -28px -30px 24px; border-radius: 12px 12px 0 0; overflow: hidden; background: #0b0b0d; }
.sd-item .sd-ph img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .7s ease; }
.sd-item:hover .sd-ph img { transform: scale(1.05); }
.sd-item .sd-ph::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 45%; background: linear-gradient(180deg, transparent, rgba(0,0,0,.38)); pointer-events: none; }
.sd-item h2 { font-size: 22px; font-weight: 700; color: var(--text); letter-spacing: .5px; }
.sd-item h2 span { color: var(--accent); margin-right: 12px; font-size: 15px; font-weight: 700; letter-spacing: 2px; }
.sd-item p { color: var(--text2); margin-top: 8px; font-size: 15px; }
.sd-item ul { margin: 12px 0 0 22px; color: var(--text2); font-size: 14.5px; }
.sd-item ul li { margin-bottom: 4px; }
.sd-item p a { color: var(--accent); }

/* ---------- 联系信息 ---------- */
.info-list { max-width: 780px; }
.info-row { display: flex; gap: 22px; padding: 22px 4px; border-bottom: 1px dashed rgba(255,255,255,.16); align-items: baseline; }
.info-row .k { color: var(--accent); min-width: 100px; font-size: 12.5px; font-weight: 600; letter-spacing: 3px; flex: none; }
.info-row .v { color: var(--text2); font-size: 16px; }
.big-tel { font-size: clamp(30px, 4vw, 42px); font-weight: 800; color: var(--text); letter-spacing: 1px; }
.big-tel small { font-size: 13px; font-weight: 400; color: var(--muted); letter-spacing: 3px; display: block; margin-top: 4px; }

/* ---------- 视频作品页 ---------- */
.video-grid, .video-item { display: grid; grid-template-columns: minmax(280px, 430px) 1fr; gap: 44px; align-items: start; }
.video-item { margin-bottom: 58px; padding-bottom: 58px; border-bottom: 1px dashed rgba(255,255,255,.16); }
.video-item:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.video-player { width: 100%; border-radius: 12px; background: #000; display: block; box-shadow: var(--shadow); border: 1px solid var(--line); }
.video-info h2 { font-size: 26px; font-weight: 700; color: var(--text); letter-spacing: .5px; }
.video-info .meta { color: var(--accent); font-size: 12.5px; font-weight: 600; letter-spacing: 2.5px; margin: 8px 0 16px; }
.video-info p { color: var(--text2); font-size: 15px; margin-bottom: 12px; }
.video-info .tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; }
.video-note { margin-top: 40px; border: 1px dashed rgba(204,255,0,.4); border-radius: 12px; padding: 20px 26px; color: var(--text2); font-size: 14.5px; background: rgba(204,255,0,.04); }
.video-note b { color: var(--accent); }

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .hero-cols { grid-template-columns: 1fr; gap: 60px; }
  .hero-media { max-width: 640px; }
  .video-grid, .video-item { grid-template-columns: 1fr; gap: 26px; }
}
@media (max-width: 760px) {
  .site-head .wrap { height: auto; padding: 12px 14px; flex-direction: column; gap: 8px; }
  .nav { width: 100%; justify-content: center; flex-wrap: wrap; }
  .nav a { padding: 7px 11px; font-size: 14px; }
  .hero { padding-top: 62px; }
  .hero-cols { gap: 48px; padding-bottom: 58px; }
  .hero-media .pic-main img { height: 300px; }
  .hero-media .pic-sub { width: 152px; height: 102px; right: -6px; bottom: -10px; }
  .hero-media .seal { width: 62px; height: 62px; font-size: 12px; }
  .section { padding: 64px 0; }
  .case img { height: 200px; }
  .cards { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .stat + .stat { border-left: none; border-top: 1px solid var(--line); }
  .hero-actions .btn { width: 100%; text-align: center; }
  .hero-tel { margin-left: 0; }
  .info-row { flex-direction: column; gap: 6px; }
  .info-row .k { min-width: 0; }
  .contact-grid { gap: 34px; }
}