/* ============================================================
   海角视觉摄影社区 — 全站样式
   设计风格：画廊白 + 光影黑（极简美术馆）
   主色 #000000 / 辅助 #F5F5F5 / 背景 #FFFFFF / 正文 #333333
   标题字体：Noto Serif SC（衬线）；正文：Noto Sans SC
   动效：fade-in 懒加载、hover 黑白转彩色 / zoom-in
   ============================================================ */

:root{
  --c-black:#000000;
  --c-gallery:#F5F5F5;
  --c-white:#FFFFFF;
  --c-text:#333333;
  --c-muted:#888888;
  --c-line:#e6e6e6;
  --maxw:1320px;
  --gap:28px;
  --ease:cubic-bezier(0.23,1,0.32,1);
  --serif:"Noto Serif SC", Georgia,"Songti SC",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--sans);
  color:var(--c-text);
  background:var(--c-white);
  line-height:1.85;
  font-size:16px;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .3s var(--ease),opacity .3s var(--ease)}
a:hover{opacity:.62}
ul,ol{list-style:none}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;color:var(--c-black);line-height:1.35}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.section{padding:96px 0}
.section--tight{padding:64px 0}
.bg-gallery{background:var(--c-gallery)}
.text-center{text-align:center}

/* 区块标题 */
.eyebrow{
  font-family:var(--sans);font-size:12px;letter-spacing:.42em;
  text-transform:uppercase;color:var(--c-muted);font-weight:500;
  display:inline-block;margin-bottom:18px;
}
.sec-title{font-size:clamp(28px,4vw,46px);letter-spacing:.04em}
.sec-desc{max-width:680px;margin:20px auto 0;color:var(--c-muted);font-size:15.5px}
.sec-head{margin-bottom:54px}

/* ============ 顶部导航（隐形 → 滚动后实体） ============ */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:22px 40px;
  transition:background .4s var(--ease),padding .4s var(--ease),box-shadow .4s var(--ease);
  background:transparent;
}
.nav__brand{display:flex;align-items:center;gap:12px;font-family:var(--serif);
  font-size:21px;font-weight:700;letter-spacing:.16em;color:#fff;transition:color .4s var(--ease)}
.nav__brand img{width:34px;height:34px;filter:invert(1) brightness(2);transition:filter .4s var(--ease)}
.nav__links{display:flex;align-items:center;gap:34px}
.nav__links a{color:#fff;font-size:14px;letter-spacing:.12em;font-weight:500;transition:color .4s var(--ease)}
.nav__cta{border:1px solid rgba(255,255,255,.7);padding:9px 22px;font-size:13px;letter-spacing:.14em}
.nav__cta:hover{background:#fff;color:#000;opacity:1}
.nav__toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none}
.nav__toggle span{width:26px;height:2px;background:#fff;transition:.3s var(--ease)}

/* 滚动后 / 内页：白底实体导航 */
.nav.is-solid,.nav.nav--inner{
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(14px);
  padding:14px 40px;box-shadow:0 1px 0 var(--c-line);
}
.nav.is-solid .nav__brand,.nav--inner .nav__brand{color:var(--c-black)}
.nav.is-solid .nav__brand img,.nav--inner .nav__brand img{filter:none}
.nav.is-solid .nav__links a,.nav--inner .nav__links a{color:var(--c-text)}
.nav.is-solid .nav__cta,.nav--inner .nav__cta{border-color:var(--c-black)}
.nav.is-solid .nav__cta:hover,.nav--inner .nav__cta:hover{background:#000;color:#fff}
.nav.is-solid .nav__toggle span,.nav--inner .nav__toggle span{background:#000}

/* ============ Hero 全屏轮播 ============ */
.hero{position:relative;height:100vh;min-height:620px;overflow:hidden;background:#000}
.hero__slide{
  position:absolute;inset:0;opacity:0;transition:opacity 1.6s var(--ease);
  background-size:cover;background-position:center;transform:scale(1.06);
}
.hero__slide.is-active{opacity:1;animation:heroZoom 8s ease-out forwards}
@keyframes heroZoom{from{transform:scale(1.06)}to{transform:scale(1.14)}}
.hero::after{content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(0,0,0,.6) 0%,rgba(0,0,0,.18) 55%,rgba(0,0,0,.42) 100%);z-index:1}
.hero__inner{position:relative;z-index:2;height:100%;display:flex;flex-direction:column;
  justify-content:center;max-width:var(--maxw);margin:0 auto;padding:0 48px;color:#fff}
.hero__title{font-size:clamp(40px,8vw,104px);color:#fff;letter-spacing:.06em;line-height:1.08;
  text-shadow:0 4px 40px rgba(0,0,0,.5);max-width:14ch}
.hero__sub{margin-top:26px;font-size:clamp(15px,1.5vw,19px);max-width:46ch;color:rgba(255,255,255,.9);
  font-weight:300;letter-spacing:.04em}
.hero__actions{margin-top:42px;display:flex;gap:18px;flex-wrap:wrap}
.hero__dots{position:absolute;bottom:38px;left:50%;transform:translateX(-50%);z-index:3;
  display:flex;gap:14px}
.hero__dots button{width:34px;height:3px;background:rgba(255,255,255,.4);border:none;cursor:pointer;transition:.4s var(--ease)}
.hero__dots button.is-active{background:#fff;width:56px}
.hero__scroll{position:absolute;bottom:34px;right:48px;z-index:3;color:rgba(255,255,255,.8);
  font-size:11px;letter-spacing:.3em;writing-mode:vertical-rl}

/* 按钮 */
.btn{display:inline-block;padding:14px 34px;font-size:13.5px;letter-spacing:.18em;font-weight:500;
  border:1px solid var(--c-black);background:var(--c-black);color:#fff;cursor:pointer;
  transition:all .35s var(--ease)}
.btn:hover{background:transparent;color:var(--c-black);opacity:1}
.btn--ghost{background:transparent;border-color:#fff;color:#fff}
.btn--ghost:hover{background:#fff;color:#000}
.btn--line{background:transparent;color:var(--c-black);border-color:var(--c-black)}
.btn--line:hover{background:#000;color:#fff}
.btn--sm{padding:10px 24px;font-size:12px}

/* 链接箭头 */
.link-arrow{display:inline-flex;align-items:center;gap:9px;font-size:13.5px;letter-spacing:.14em;
  font-weight:500;color:var(--c-black);border-bottom:1px solid var(--c-black);padding-bottom:3px}
.link-arrow span{transition:transform .35s var(--ease)}
.link-arrow:hover span{transform:translateX(6px)}
.link-arrow:hover{opacity:1}

/* ============ Masonry 瀑布流 ============ */
.masonry{columns:3;column-gap:var(--gap)}
.masonry .m-item{break-inside:avoid;margin-bottom:var(--gap)}
@media(max-width:980px){.masonry{columns:2}}
@media(max-width:600px){.masonry{columns:1}}

/* 作品卡片（黑白转彩色 + EXIF 读取器） */
.photo-card{position:relative;overflow:hidden;background:#000;cursor:pointer;display:block}
.photo-card img{width:100%;height:auto;filter:grayscale(100%);transform:scale(1.001);
  transition:filter .7s var(--ease),transform .9s var(--ease)}
.photo-card:hover img{filter:grayscale(0);transform:scale(1.05)}
.photo-card:hover{opacity:1}
.photo-card__exif{
  position:absolute;left:0;right:0;bottom:0;padding:22px 20px 18px;
  background:linear-gradient(to top,rgba(0,0,0,.82),rgba(0,0,0,0));
  color:#fff;opacity:0;transform:translateY(12px);transition:.5s var(--ease);
}
.photo-card:hover .photo-card__exif{opacity:1;transform:translateY(0)}
.photo-card__exif h4{color:#fff;font-size:16px;margin-bottom:8px}
.exif-row{display:flex;flex-wrap:wrap;gap:7px;font-family:var(--sans)}
.exif-tag{font-size:11px;letter-spacing:.06em;border:1px solid rgba(255,255,255,.45);
  padding:3px 9px;color:rgba(255,255,255,.92)}

/* ============ 每日精选 杂志排版 ============ */
.feature-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:var(--gap);align-items:stretch}
.feature-grid .col-stack{display:grid;gap:var(--gap)}
@media(max-width:840px){.feature-grid{grid-template-columns:1fr}}

/* ============ 摄影师推荐 ============ */
.ph-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:48px}
@media(max-width:840px){.ph-grid{grid-template-columns:1fr;gap:40px}}
.ph-card{text-align:center}
.ph-card__avatar{width:100%;aspect-ratio:1/1;overflow:hidden;background:#000;margin-bottom:22px}
.ph-card__avatar img{width:100%;height:100%;object-fit:cover;filter:grayscale(100%);
  transition:filter .7s var(--ease),transform .9s var(--ease)}
.ph-card:hover .ph-card__avatar img{filter:grayscale(0);transform:scale(1.05)}
.ph-card h3{font-size:22px;letter-spacing:.08em}
.ph-card .role{font-size:12px;letter-spacing:.24em;color:var(--c-muted);text-transform:uppercase;margin:6px 0 12px}
.ph-card p{font-size:14.5px;color:var(--c-muted);max-width:30ch;margin:0 auto}

/* ============ 约拍服务入口 ============ */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid var(--c-line)}
@media(max-width:840px){.svc-grid{grid-template-columns:1fr}}
.svc-cell{padding:48px 38px;border-right:1px solid var(--c-line);transition:background .4s var(--ease)}
.svc-cell:last-child{border-right:none}
.svc-cell:hover{background:var(--c-gallery)}
.svc-cell .num{font-family:var(--serif);font-size:14px;color:var(--c-muted);letter-spacing:.2em}
.svc-cell h3{font-size:25px;margin:14px 0 14px}
.svc-cell .price{font-family:var(--serif);font-size:18px;color:var(--c-black);margin:18px 0;letter-spacing:.04em}
.svc-cell p{font-size:14px;color:var(--c-muted);margin-bottom:22px}

/* ============ 资讯/教程 图文混排 ============ */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
@media(max-width:840px){.post-grid{grid-template-columns:1fr}}
.post-card{background:#fff}
.post-card__img{overflow:hidden;background:#000;aspect-ratio:3/2}
.post-card__img img{width:100%;height:100%;object-fit:cover;transition:transform .9s var(--ease)}
.post-card:hover .post-card__img img{transform:scale(1.07)}
.post-card__body{padding:24px 4px 0}
.post-card .cat{font-size:11px;letter-spacing:.2em;color:var(--c-muted);text-transform:uppercase}
.post-card h3{font-size:21px;margin:12px 0 10px;line-height:1.4}
.post-card p{font-size:14px;color:var(--c-muted)}

/* ============ 通用内页 ============ */
.page-hero{position:relative;height:60vh;min-height:420px;display:flex;align-items:flex-end;
  background:#000 center/cover no-repeat;color:#fff;overflow:hidden}
.page-hero::after{content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(0,0,0,.75),rgba(0,0,0,.15))}
.page-hero__inner{position:relative;z-index:2;max-width:var(--maxw);margin:0 auto;width:100%;
  padding:0 48px 64px}
.page-hero h1{color:#fff;font-size:clamp(32px,5vw,62px);letter-spacing:.05em}
.page-hero p{color:rgba(255,255,255,.88);margin-top:16px;max-width:54ch;font-weight:300}

/* 面包屑 */
.crumb{font-size:12.5px;letter-spacing:.1em;color:var(--c-muted);padding:22px 0}
.crumb a:hover{color:var(--c-black);opacity:1}
.crumb span{margin:0 8px;color:var(--c-line)}

/* 文章正文排版 */
.prose{max-width:760px;margin:0 auto}
.prose p{margin:0 0 22px;font-size:16.5px;color:var(--c-text)}
.prose h2{font-size:30px;margin:48px 0 22px;letter-spacing:.03em}
.prose h3{font-size:22px;margin:38px 0 16px}
.prose figure{margin:38px 0}
.prose figure img{width:100%}
.prose figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:12px;letter-spacing:.05em}
.prose blockquote{border-left:3px solid var(--c-black);padding:6px 0 6px 28px;margin:32px 0;
  font-family:var(--serif);font-size:21px;color:var(--c-black);line-height:1.7}
.prose ul{margin:0 0 22px;padding-left:4px}
.prose ul li{position:relative;padding-left:24px;margin-bottom:12px;font-size:16px}
.prose ul li::before{content:"—";position:absolute;left:0;color:var(--c-muted)}
.lead{font-size:20px;line-height:1.8;color:var(--c-black);font-family:var(--serif);margin-bottom:36px}

/* 信息表格 */
.tbl{width:100%;border-collapse:collapse;margin:28px 0;font-size:14.5px}
.tbl th,.tbl td{text-align:left;padding:14px 16px;border-bottom:1px solid var(--c-line)}
.tbl th{font-family:var(--sans);font-weight:600;color:var(--c-black);background:var(--c-gallery);
  letter-spacing:.06em}
.tbl td{color:var(--c-text)}

/* FAQ 折叠 */
.faq{max-width:820px;margin:0 auto}
.faq__item{border-bottom:1px solid var(--c-line)}
.faq__q{display:flex;justify-content:space-between;align-items:center;gap:20px;cursor:pointer;
  padding:24px 0;font-family:var(--serif);font-size:18px;color:var(--c-black);font-weight:700}
.faq__q .ic{font-size:24px;font-weight:300;transition:transform .4s var(--ease);flex-shrink:0}
.faq__item.is-open .faq__q .ic{transform:rotate(45deg)}
.faq__a{max-height:0;overflow:hidden;transition:max-height .5s var(--ease)}
.faq__a p{padding:0 0 24px;color:var(--c-muted);font-size:15px}

/* 相关链接 */
.related{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
@media(max-width:840px){.related{grid-template-columns:1fr}}
.related a{display:block;padding:28px 26px;border:1px solid var(--c-line);transition:.4s var(--ease)}
.related a:hover{background:var(--c-black);color:#fff;opacity:1}
.related a:hover .rt,.related a:hover .rd{color:inherit}
.related .rt{font-family:var(--serif);font-size:18px;color:var(--c-black);margin-bottom:8px}
.related .rd{font-size:13px;color:var(--c-muted)}

/* 分类筛选标签 */
.filter-bar{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-bottom:54px}
.filter-bar button{background:none;border:1px solid var(--c-line);padding:9px 24px;font-size:13px;
  letter-spacing:.14em;cursor:pointer;color:var(--c-text);transition:.35s var(--ease);font-family:var(--sans)}
.filter-bar button.is-active,.filter-bar button:hover{background:var(--c-black);color:#fff;border-color:var(--c-black)}

/* ============ Before/After 预设滑块 ============ */
.ba{position:relative;max-width:880px;margin:0 auto;aspect-ratio:3/2;overflow:hidden;
  user-select:none;cursor:ew-resize;background:#000}
.ba img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;pointer-events:none}
.ba__after{clip-path:inset(0 0 0 50%)}
.ba__handle{position:absolute;top:0;bottom:0;left:50%;width:2px;background:#fff;z-index:3;pointer-events:none}
.ba__handle::after{content:"⇆";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:46px;height:46px;border-radius:50%;background:#fff;color:#000;display:flex;align-items:center;
  justify-content:center;font-size:18px;box-shadow:0 4px 20px rgba(0,0,0,.4)}
.ba__label{position:absolute;top:16px;z-index:4;font-size:11px;letter-spacing:.2em;color:#fff;
  background:rgba(0,0,0,.55);padding:5px 12px;pointer-events:none}
.ba__label--before{left:16px}
.ba__label--after{right:16px}

/* ============ 约拍档期日历 ============ */
.cal{max-width:560px;margin:0 auto;border:1px solid var(--c-line)}
.cal__head{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;
  border-bottom:1px solid var(--c-line);font-family:var(--serif);font-size:18px;color:var(--c-black)}
.cal__grid{display:grid;grid-template-columns:repeat(7,1fr)}
.cal__grid .dow{text-align:center;font-size:11px;letter-spacing:.12em;color:var(--c-muted);
  padding:12px 0;border-bottom:1px solid var(--c-line)}
.cal__cell{aspect-ratio:1/1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  font-size:14px;border-right:1px solid var(--c-line);border-bottom:1px solid var(--c-line);position:relative}
.cal__cell:nth-child(7n){border-right:none}
.cal__cell .dot{width:6px;height:6px;border-radius:50%;margin-top:4px}
.cal__cell.free .dot{background:#000}
.cal__cell.busy{color:var(--c-line)}
.cal__cell.busy .dot{background:var(--c-line)}
.cal__legend{display:flex;gap:24px;justify-content:center;margin-top:22px;font-size:13px;color:var(--c-muted)}
.cal__legend i{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:7px;vertical-align:middle}

/* ============ Lightbox 灯箱 ============ */
.lightbox{position:fixed;inset:0;z-index:200;background:rgba(0,0,0,.96);display:none;
  align-items:center;justify-content:center}
.lightbox.is-open{display:flex;animation:fadeIn .4s var(--ease)}
.lightbox img{max-width:88vw;max-height:84vh;object-fit:contain}
.lightbox__close{position:absolute;top:26px;right:34px;color:#fff;font-size:36px;font-weight:200;
  background:none;border:none;cursor:pointer;line-height:1}
.lightbox__nav{position:absolute;top:50%;transform:translateY(-50%);color:#fff;font-size:46px;
  font-weight:200;background:none;border:none;cursor:pointer;padding:0 26px}
.lightbox__prev{left:8px}.lightbox__next{right:8px}
.lightbox__cap{position:absolute;bottom:30px;left:0;right:0;text-align:center;color:rgba(255,255,255,.8);
  font-size:13px;letter-spacing:.1em}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}

/* ============ 搜索页 ============ */
.search-box{display:flex;max-width:640px;margin:0 auto 16px;border:1px solid var(--c-black)}
.search-box input{flex:1;border:none;padding:18px 22px;font-size:16px;font-family:var(--sans);outline:none}
.search-box button{border:none;background:#000;color:#fff;padding:0 30px;font-size:13px;letter-spacing:.16em;cursor:pointer}
.search-meta{text-align:center;color:var(--c-muted);font-size:13.5px;margin-bottom:40px}
.search-result{border-bottom:1px solid var(--c-line);padding:26px 0}
.search-result a{font-family:var(--serif);font-size:21px;color:var(--c-black)}
.search-result a:hover{opacity:.6}
.search-result .url{font-size:12.5px;color:var(--c-muted);margin:6px 0 8px;letter-spacing:.04em}
.search-result p{font-size:14.5px;color:var(--c-text)}

/* ============ CTA 大区块 ============ */
.cta-band{background:#000;color:#fff;text-align:center;padding:110px 0}
.cta-band h2{color:#fff;font-size:clamp(28px,4.4vw,52px);letter-spacing:.04em}
.cta-band p{color:rgba(255,255,255,.72);max-width:48ch;margin:22px auto 40px;font-weight:300}

/* ============ 页脚 ============ */
.footer{background:#0a0a0a;color:rgba(255,255,255,.6);padding:80px 0 36px}
.footer a{color:rgba(255,255,255,.6)}
.footer a:hover{color:#fff;opacity:1}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;margin-bottom:56px}
@media(max-width:840px){.footer__grid{grid-template-columns:1fr 1fr;gap:34px}}
@media(max-width:520px){.footer__grid{grid-template-columns:1fr}}
.footer__brand{display:flex;align-items:center;gap:12px;font-family:var(--serif);font-size:22px;
  color:#fff;letter-spacing:.14em;margin-bottom:20px}
.footer__brand img{width:36px;height:36px;filter:invert(1) brightness(2)}
.footer__col h4{color:#fff;font-size:13px;letter-spacing:.18em;text-transform:uppercase;margin-bottom:20px;font-family:var(--sans)}
.footer__col li{margin-bottom:13px;font-size:14px}
.footer p.desc{font-size:14px;max-width:34ch;line-height:1.9}
.footer__bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:28px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;font-size:12.5px;letter-spacing:.04em}

/* ============ 懒加载淡入 ============ */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ============ 移动端 ============ */
@media(max-width:900px){
  .nav{padding:16px 22px}
  .nav.is-solid,.nav--inner{padding:12px 22px}
  .nav__links{position:fixed;inset:0 0 0 auto;width:78%;max-width:340px;background:#fff;
    flex-direction:column;justify-content:center;gap:30px;transform:translateX(100%);
    transition:transform .45s var(--ease);box-shadow:-10px 0 40px rgba(0,0,0,.18);z-index:120}
  .nav__links.is-open{transform:translateX(0)}
  .nav__links a{color:var(--c-text);font-size:18px}
  .nav__cta{border-color:var(--c-black)}
  .nav__toggle{display:flex;z-index:130}
  .hero__inner,.page-hero__inner{padding-left:24px;padding-right:24px}
  .hero__scroll{display:none}
  .section{padding:64px 0}
  .wrap{padding:0 22px}
}

/* 字数辅助：内页 intro 区 */
.page-intro{max-width:880px;margin:0 auto;text-align:center}
.page-intro p{color:var(--c-muted);font-size:16.5px;margin-top:18px}

/* 数据统计条 */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;text-align:center}
@media(max-width:700px){.stats{grid-template-columns:repeat(2,1fr);gap:40px 20px}}
.stats .num{font-family:var(--serif);font-size:clamp(34px,5vw,56px);color:var(--c-black);line-height:1}
.stats .lbl{font-size:12.5px;letter-spacing:.16em;color:var(--c-muted);margin-top:12px;text-transform:uppercase}