/* 海角社区 HAI JIAO - 全站样式 */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;font-size:16px;line-height:1.7;color:#3C485A;background:#FFFFFF;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:#1677EE;text-decoration:none;transition:color .2s,background .2s,opacity .2s}
a:hover{color:#075FC6}
a:focus-visible{outline:2px solid #3395FF;outline-offset:2px}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
.container{width:100%;max-width:1320px;margin:0 auto;padding:0 24px}
.container-narrow{max-width:820px;margin:0 auto;padding:0 24px}
.container-mid{max-width:1100px;margin:0 auto;padding:0 24px}

/* 颜色变量 */
:root{
  --brand:#1677EE;--brand-light:#3395FF;--brand-dark:#075FC6;--brand-deeper:#08488D;
  --navy:#0A315E;--footer:#071D37;--title:#16243A;--text:#3C485A;--muted:#6B7787;--hint:#929BA8;
  --bg:#FFFFFF;--bg-soft:#F7FAFF;--bg-blue:#EDF5FF;--bg-softblue:#E5F1FF;
  --white:#FFFFFF;--light-text:#DCEEFF;
  --border:rgba(22,119,238,.12);--border-dark:rgba(255,255,255,.12);
  --shadow:0 12px 34px rgba(30,72,120,.08);--shadow-brand:0 14px 40px rgba(22,119,238,.14);
  --radius:12px;--radius-sm:8px;--radius-lg:16px;
  --nav-h:72px;--mnav-h:62px;--bnav-h:56px;
}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);height:var(--nav-h)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--nav-h);max-width:1320px;margin:0 auto;padding:0 24px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;min-height:44px}
.brand img{height:36px;width:auto;object-fit:contain}
.brand-name{font-size:18px;font-weight:700;color:var(--title);letter-spacing:.02em}
.brand-en{font-size:11px;color:var(--muted);font-weight:500;letter-spacing:.08em;margin-left:2px}
.nav-main{display:flex;align-items:center;gap:4px;flex:1;justify-content:center}
.nav-main a{padding:10px 14px;font-size:15px;color:var(--text);border-radius:20px;min-height:44px;display:inline-flex;align-items:center;white-space:nowrap;position:relative}
.nav-main a:hover{background:var(--bg-blue);color:var(--brand)}
.nav-main a.active{background:var(--bg-softblue);color:var(--brand);font-weight:600}
.nav-main a.active::after{content:"";position:absolute;bottom:6px;left:50%;transform:translateX(-50%);width:5px;height:5px;background:var(--brand);border-radius:50%}
.nav-actions{display:flex;align-items:center;gap:8px;flex-shrink:0}
.nav-actions a,.nav-actions button{padding:10px 14px;font-size:14px;color:var(--text);border-radius:20px;min-height:44px;min-width:44px;display:inline-flex;align-items:center;justify-content:center}
.nav-actions a:hover,.nav-actions button:hover{background:var(--bg-blue);color:var(--brand)}
.nav-actions .btn-app{background:linear-gradient(135deg,#3998FF 0%,#1677EE 55%,#075FC6 100%);color:#fff!important;padding:10px 18px;border-radius:22px;font-weight:600}
.nav-actions .btn-app:hover{opacity:.92;color:#fff!important}
.menu-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;padding:10px}
.menu-toggle span{display:block;width:20px;height:2px;background:var(--title);border-radius:1px;transition:transform .25s,opacity .25s}
.menu-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle.open span:nth-child(2){opacity:0}
.menu-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 手机顶部 */
.m-header{display:none;position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.97);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);height:var(--mnav-h)}
.m-header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--mnav-h);padding:0 12px}
.m-header .brand img{height:30px}
.m-header .brand-name{font-size:16px}
.m-btn{width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:10px;color:var(--title)}
.m-btn:hover{background:var(--bg-blue)}

/* 主内容区 */
.main{min-height:60vh;padding-bottom:40px}
.page-hero{padding:48px 0 36px;background:linear-gradient(180deg,var(--bg-soft) 0%,#fff 100%)}
.page-hero h1{font-size:40px;line-height:1.25;color:var(--title);font-weight:700;margin-bottom:12px}
.page-hero .lead{font-size:17px;color:var(--muted);max-width:640px;line-height:1.7}
.section{padding:48px 0}
.section-soft{background:var(--bg-soft)}
.section-blue{background:var(--bg-blue)}
.section-navy{background:var(--navy);color:var(--light-text)}
.section-navy h2,.section-navy h3{color:#fff}
.section-title{font-size:30px;color:var(--title);font-weight:700;margin-bottom:8px;line-height:1.3}
.section-desc{font-size:15px;color:var(--muted);margin-bottom:28px;max-width:620px}
.section-navy .section-desc{color:var(--light-text);opacity:.9}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 24px;font-size:15px;font-weight:600;border-radius:24px;min-height:44px;transition:opacity .2s,transform .15s,box-shadow .2s}
.btn-primary{background:linear-gradient(135deg,#3998FF 0%,#1677EE 55%,#075FC6 100%);color:#fff;box-shadow:var(--shadow-brand)}
.btn-primary:hover{opacity:.93;color:#fff;transform:translateY(-1px)}
.btn-outline{border:1.5px solid var(--brand);color:var(--brand);background:#fff}
.btn-outline:hover{background:var(--bg-blue);color:var(--brand-dark)}
.btn-ghost{color:var(--brand);background:transparent}
.btn-ghost:hover{background:var(--bg-blue)}
.btn-white{background:#fff;color:var(--brand-dark);font-weight:600}
.btn-white:hover{background:var(--bg-soft);color:var(--brand)}

/* 首页 Banner */
.hero-banner{position:relative;width:100%;aspect-ratio:16/7;max-height:520px;overflow:hidden;background:linear-gradient(135deg,#0A315E 0%,#1677EE 50%,#3395FF 100%);border-radius:0 0 20px 20px}
.hero-banner img{width:100%;height:100%;object-fit:cover;object-position:center}
.hero-banner .hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(7,29,55,.78) 0%,rgba(10,49,94,.55) 45%,rgba(10,49,94,.25) 100%);display:flex;align-items:center}
.hero-content{max-width:1320px;margin:0 auto;padding:0 40px;color:#fff}
.hero-content h1{font-size:48px;font-weight:700;line-height:1.2;margin-bottom:14px;color:#fff;max-width:560px}
.hero-content p{font-size:17px;line-height:1.7;color:var(--light-text);max-width:480px;margin-bottom:24px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}

/* 四格导航 */
.quad-nav{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:-36px;position:relative;z-index:2;padding:0 24px;max-width:1320px;margin-left:auto;margin-right:auto}
.quad-card{background:#fff;border-radius:var(--radius);padding:22px 20px;box-shadow:var(--shadow);border:1px solid var(--border);transition:transform .2s,box-shadow .2s;min-height:120px}
.quad-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-brand)}
.quad-card h3{font-size:17px;color:var(--title);margin-bottom:6px;font-weight:600}
.quad-card p{font-size:13px;color:var(--muted);line-height:1.55}

/* 卡片通用 */
.card-grid{display:grid;gap:20px}
.card-grid-2{grid-template-columns:repeat(2,1fr)}
.card-grid-3{grid-template-columns:repeat(3,1fr)}
.card-grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border-radius:var(--radius);border:1px solid var(--border);overflow:hidden;transition:box-shadow .2s,transform .2s}
.card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}
.card-body{padding:20px 22px}
.card h3{font-size:18px;color:var(--title);margin-bottom:8px;font-weight:600;line-height:1.4}
.card p{font-size:14px;color:var(--text);line-height:1.65}
.card .meta{font-size:13px;color:var(--hint);margin-top:10px}
.card-link{display:block;color:inherit}
.card-link:hover h3{color:var(--brand)}

/* 今日值得看 */
.featured-large{display:grid;grid-template-columns:1.4fr 1fr;gap:24px;margin-bottom:24px}
.featured-large .main-feature{background:var(--bg-soft);border-radius:var(--radius-lg);padding:32px;border:1px solid var(--border)}
.featured-large .main-feature h2{font-size:24px;color:var(--title);margin-bottom:12px;line-height:1.35}
.featured-large .main-feature p{font-size:15px;color:var(--text);line-height:1.7;margin-bottom:16px}
.side-features{display:flex;flex-direction:column;gap:16px}
.side-feature{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px;flex:1}
.side-feature h3{font-size:16px;color:var(--title);margin-bottom:6px}
.side-feature p{font-size:13px;color:var(--muted);line-height:1.6}
.short-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.short-item{padding:16px 18px;background:var(--bg-soft);border-radius:var(--radius-sm);border:1px solid var(--border)}
.short-item h4{font-size:15px;color:var(--title);margin-bottom:4px}
.short-item p{font-size:13px;color:var(--muted)}

/* 城市生活图文 */
.city-feature{display:grid;grid-template-columns:55% 45%;gap:36px;align-items:center}
.city-feature-image{aspect-ratio:4/3;border-radius:var(--radius-lg);overflow:hidden;background:linear-gradient(135deg,var(--bg-blue),var(--bg-softblue));border:1px solid var(--border)}
.city-feature-image img{width:100%;height:100%;object-fit:cover}
.city-feature-text h2{font-size:28px;color:var(--title);margin-bottom:12px}
.city-feature-text p{font-size:15px;color:var(--text);line-height:1.75;margin-bottom:14px}
.city-feature-text .btn{margin-top:8px}

/* 时间板 */
.time-board{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.time-card{background:#fff;border-radius:var(--radius);padding:22px 18px;border:1px solid var(--border);border-top:3px solid var(--brand)}
.time-card .time-label{font-size:13px;color:var(--brand);font-weight:600;margin-bottom:8px}
.time-card h3{font-size:16px;color:var(--title);margin-bottom:8px}
.time-card p{font-size:13px;color:var(--muted);line-height:1.6}

/* 兴趣墙 */
.interest-wall{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.interest-item{background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--radius-sm);padding:16px 14px;text-align:center;transition:background .2s,border-color .2s}
.interest-item:hover{background:var(--bg-blue);border-color:rgba(22,119,238,.25)}
.interest-item h3{font-size:16px;color:var(--title);margin-bottom:4px}
.interest-item p{font-size:12px;color:var(--muted);line-height:1.5}

/* 经验列表 */
.exp-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.exp-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px 22px}
.exp-item h3{font-size:16px;color:var(--title);margin-bottom:8px}
.exp-item p{font-size:14px;color:var(--text);line-height:1.65}

/* 故事 */
.story-main{background:var(--bg-soft);border-radius:var(--radius-lg);padding:32px;border:1px solid var(--border);margin-bottom:24px}
.story-main h2{font-size:22px;color:var(--title);margin-bottom:12px}
.story-main p{font-size:15px;color:var(--text);line-height:1.8;margin-bottom:10px}
.story-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.story-card{padding:18px 20px;background:#fff;border:1px solid var(--border);border-radius:var(--radius)}
.story-card h3{font-size:15px;color:var(--title);margin-bottom:6px}
.story-card p{font-size:13px;color:var(--muted);line-height:1.6}

/* 热议主题 */
.topic-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.topic-item{display:flex;align-items:flex-start;gap:14px;padding:18px 20px;background:#fff;border:1px solid var(--border);border-radius:var(--radius)}
.topic-num{flex-shrink:0;width:32px;height:32px;background:var(--bg-blue);color:var(--brand);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700}
.topic-item h3{font-size:15px;color:var(--title);margin-bottom:4px}
.topic-item p{font-size:13px;color:var(--muted);line-height:1.55}

/* 影集槽位 */
.album-grid{display:grid;grid-template-columns:2fr 1fr 1fr;grid-template-rows:auto auto;gap:12px}
.media-slot{border-radius:var(--radius);overflow:hidden;background:linear-gradient(145deg,var(--bg-blue) 0%,var(--bg-soft) 60%,#fff 100%);border:1px solid var(--border);position:relative;min-height:140px}
.media-slot.wide{grid-row:1/3;aspect-ratio:3/4;min-height:320px}
.media-slot.mid{aspect-ratio:4/3}
.media-slot.sm{aspect-ratio:1/1}
.media-slot img{width:100%;height:100%;object-fit:cover}
.media-slot .slot-label{position:absolute;bottom:0;left:0;right:0;padding:10px 14px;background:linear-gradient(transparent,rgba(7,29,55,.7));color:#fff;font-size:13px}

/* APP 区 */
.app-block{display:grid;grid-template-columns:55% 45%;gap:40px;align-items:center}
.app-preview-image{display:flex;justify-content:center;align-items:center}
.app-preview-image img{max-height:520px;width:auto;max-width:100%;object-fit:contain}
.app-preview-image .app-slot{width:100%;max-width:280px;aspect-ratio:9/16;background:linear-gradient(160deg,var(--bg-blue),var(--bg-softblue));border-radius:28px;border:1px solid var(--border);box-shadow:var(--shadow)}
.app-text h2{font-size:28px;color:var(--title);margin-bottom:12px}
.app-text p{font-size:15px;color:var(--text);line-height:1.75;margin-bottom:12px}
.app-features{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:18px 0 24px}
.app-features li{font-size:14px;color:var(--text);padding:8px 12px;background:var(--bg-soft);border-radius:8px}

/* 脉搏信息条 */
.pulse-list{display:flex;flex-direction:column;gap:10px}
.pulse-item{display:flex;align-items:flex-start;gap:14px;padding:14px 18px;background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm)}
.pulse-tag{flex-shrink:0;font-size:12px;padding:3px 10px;background:var(--bg-blue);color:var(--brand);border-radius:12px;font-weight:600}
.pulse-item p{font-size:14px;color:var(--text);line-height:1.55}

/* 页脚 */
.site-footer{background:var(--footer);color:var(--light-text);padding:56px 0 32px;margin-top:48px;border-top:1px solid rgba(220,238,255,.15)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr 1.2fr;gap:32px;margin-bottom:40px}
.footer-brand img{height:32px;margin-bottom:12px}
.footer-brand .brand-name{font-size:16px;color:#fff;font-weight:700}
.footer-brand .brand-en{font-size:11px;color:var(--light-text);opacity:.8;letter-spacing:.06em}
.footer-brand p{font-size:13px;line-height:1.7;color:rgba(220,238,255,.75);margin-top:12px;max-width:280px}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:14px;font-weight:600}
.footer-col a{display:block;font-size:13px;color:rgba(220,238,255,.7);padding:5px 0;min-height:32px}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;text-align:center;font-size:13px;color:rgba(220,238,255,.55)}

/* 频道抽屉 / Mega Menu */
.mega-mask{position:fixed;inset:0;background:rgba(7,29,55,.45);z-index:1100;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .25s,visibility .25s}
.mega-mask.open{opacity:1;visibility:visible;pointer-events:auto}
.mega-panel{position:fixed;top:0;right:0;width:min(920px,100%);height:100%;background:#fff;z-index:1101;transform:translateX(100%);transition:transform .3s ease;overflow-y:auto;visibility:hidden;pointer-events:none}
.mega-panel.open{transform:translateX(0);visibility:visible;pointer-events:auto}
.mega-header{display:flex;align-items:center;justify-content:space-between;padding:20px 28px;border-bottom:1px solid var(--border);position:sticky;top:0;background:#fff;z-index:2}
.mega-header .brand img{height:32px}
.mega-close{width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:10px;font-size:22px;color:var(--title)}
.mega-close:hover{background:var(--bg-blue)}
.mega-body{padding:28px}
.mega-group{margin-bottom:28px}
.mega-group h3{font-size:13px;color:var(--brand);font-weight:700;letter-spacing:.04em;margin-bottom:12px;text-transform:uppercase}
.mega-links{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}
.mega-links a{display:block;padding:12px 16px;font-size:15px;color:var(--text);border-radius:10px;min-height:44px}
.mega-links a:hover{background:var(--bg-blue);color:var(--brand)}

/* 搜索面板 */
.search-panel{position:fixed;top:0;left:0;right:0;background:#fff;z-index:1102;padding:20px 24px 28px;box-shadow:var(--shadow);transform:translateY(-100%);transition:transform .28s;visibility:hidden;pointer-events:none}
.search-panel.open{transform:translateY(0);visibility:visible;pointer-events:auto}
.search-inner{max-width:640px;margin:0 auto}
.search-inner form{display:flex;gap:10px}
.search-inner input{flex:1;padding:14px 18px;border:1.5px solid var(--border);border-radius:24px;font-size:16px;outline:none;min-height:48px}
.search-inner input:focus{border-color:var(--brand)}
.search-inner button[type=submit]{padding:12px 24px;background:linear-gradient(135deg,#3998FF,#1677EE);color:#fff;border-radius:24px;font-weight:600;min-height:48px}
.search-close{position:absolute;top:16px;right:20px;width:44px;height:44px;display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--title);border-radius:10px}
.search-close:hover{background:var(--bg-blue)}
.search-hint{font-size:13px;color:var(--hint);margin-top:12px;text-align:center}

/* 手机底部导航 */
.bottom-nav{display:none;position:fixed;bottom:0;left:0;right:0;height:calc(var(--bnav-h) + env(safe-area-inset-bottom,0px));padding-bottom:env(safe-area-inset-bottom,0px);background:rgba(255,255,255,.97);backdrop-filter:blur(10px);border-top:1px solid var(--border);z-index:900;justify-content:space-around;align-items:center}
.bottom-nav a{display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:11px;color:var(--muted);min-width:56px;min-height:48px;padding:6px 8px;border-radius:10px}
.bottom-nav a span.icon{font-size:20px;margin-bottom:2px;line-height:1}
.bottom-nav a.active{color:var(--brand);font-weight:600}
.bottom-nav a:hover{color:var(--brand)}

/* 内页通用模块 */
.article-body{font-size:16px;line-height:1.85;color:var(--text)}
.article-body p{margin-bottom:16px}
.article-body h2{font-size:24px;color:var(--title);margin:32px 0 14px;font-weight:700}
.article-body h3{font-size:18px;color:var(--title);margin:24px 0 10px;font-weight:600}
.article-body ul,.article-body ol{margin:12px 0 16px 20px}
.article-body li{margin-bottom:8px;list-style:disc}
.content-block{margin-bottom:36px}
.content-block h2{font-size:26px;color:var(--title);margin-bottom:14px}
.content-block h3{font-size:18px;color:var(--title);margin:20px 0 8px}
.content-block p{font-size:15px;line-height:1.8;color:var(--text);margin-bottom:12px}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0}
.tag{display:inline-block;padding:5px 12px;background:var(--bg-blue);color:var(--brand);font-size:13px;border-radius:14px}
.info-box{background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--radius);padding:22px 24px;margin:20px 0}
.info-box h3{font-size:16px;color:var(--title);margin-bottom:8px}
.info-box p{font-size:14px;color:var(--text);margin:0}
.navy-box{background:var(--navy);color:var(--light-text);border-radius:var(--radius);padding:28px 28px;margin:24px 0}
.navy-box h2,.navy-box h3{color:#fff;margin-bottom:12px}
.navy-box p,.navy-box li{color:var(--light-text);font-size:15px;line-height:1.7}
.navy-box ul{margin:12px 0 0 18px}
.navy-box li{list-style:disc;margin-bottom:8px}
.checklist{display:grid;gap:10px}
.check-item{display:flex;gap:12px;align-items:flex-start;padding:14px 16px;background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm)}
.check-item .mark{flex-shrink:0;width:22px;height:22px;background:var(--bg-blue);color:var(--brand);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700}
.check-item p{font-size:14px;color:var(--text);line-height:1.55;margin:0}

/* FAQ */
.faq-list details{border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:10px;background:#fff}
.faq-list summary{padding:16px 20px;font-size:15px;font-weight:600;color:var(--title);cursor:pointer;min-height:48px;list-style:none;display:flex;align-items:center;justify-content:space-between}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"+";font-size:18px;color:var(--brand);font-weight:400}
.faq-list details[open] summary::after{content:"−"}
.faq-list .faq-a{padding:0 20px 18px;font-size:14px;color:var(--text);line-height:1.7}

/* 原则列表 */
.principle-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.principle-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:22px}
.principle-card h3{font-size:16px;color:var(--title);margin-bottom:8px}
.principle-card p{font-size:14px;color:var(--text);line-height:1.65}

/* 路线步骤 */
.route-steps{display:grid;gap:0;position:relative}
.route-step{display:grid;grid-template-columns:48px 1fr;gap:16px;padding-bottom:28px;position:relative}
.route-step::before{content:"";position:absolute;left:19px;top:36px;bottom:0;width:2px;background:var(--bg-blue)}
.route-step:last-child::before{display:none}
.route-num{width:40px;height:40px;background:linear-gradient(135deg,#3998FF,#1677EE);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;position:relative;z-index:1}
.route-body h3{font-size:17px;color:var(--title);margin-bottom:6px}
.route-body p{font-size:14px;color:var(--text);line-height:1.7}

/* 画册页 */
.album-page-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.album-page-grid .media-slot{aspect-ratio:4/3;min-height:180px}
.album-page-grid .media-slot.featured{grid-column:span 2;aspect-ratio:16/9;min-height:280px}

/* 关于页品牌区 */
.about-brand{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.about-brand-image{aspect-ratio:4/3;border-radius:var(--radius-lg);overflow:hidden;background:linear-gradient(135deg,var(--bg-blue),var(--bg-softblue));border:1px solid var(--border)}
.about-brand-image img{width:100%;height:100%;object-fit:cover}

/* 工具类 */
.text-center{text-align:center}
.mt-8{margin-top:8px}.mt-16{margin-top:16px}.mt-24{margin-top:24px}.mt-32{margin-top:32px}
.mb-16{margin-bottom:16px}.mb-24{margin-bottom:24px}.mb-32{margin-bottom:32px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}

/* 响应式 */
@media (max-width:1279px){
  .container{padding:0 20px}
  .hero-content h1{font-size:42px}
  .quad-nav{gap:12px}
  .interest-wall{grid-template-columns:repeat(4,1fr)}
  .footer-grid{grid-template-columns:1.2fr 1fr 1fr 1fr;gap:24px}
  .footer-grid > :last-child{grid-column:1/-1}
}
@media (max-width:1023px){
  .nav-main{display:none}
  .menu-toggle{display:flex}
  .site-header{display:none}
  .m-header{display:block}
  .hero-banner{aspect-ratio:16/10;max-height:380px;border-radius:0 0 16px 16px}
  .hero-content{padding:0 24px}
  .hero-content h1{font-size:34px}
  .hero-content p{font-size:15px}
  .quad-nav{grid-template-columns:repeat(2,1fr);margin-top:-28px;gap:12px}
  .featured-large{grid-template-columns:1fr}
  .city-feature{grid-template-columns:1fr;gap:24px}
  .city-feature-image{order:-1}
  .time-board{grid-template-columns:repeat(2,1fr)}
  .interest-wall{grid-template-columns:repeat(3,1fr)}
  .exp-list{grid-template-columns:1fr}
  .story-grid{grid-template-columns:1fr}
  .topic-list{grid-template-columns:1fr}
  .album-grid{grid-template-columns:1fr 1fr;grid-template-rows:auto}
  .album-grid .media-slot.wide{grid-row:auto;grid-column:1/-1;aspect-ratio:16/9;min-height:200px}
  .app-block{grid-template-columns:1fr;gap:28px}
  .app-preview-image img,.app-preview-image .app-slot{max-width:240px;max-height:420px}
  .app-features{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
  .page-hero h1{font-size:32px}
  .section-title{font-size:26px}
  .principle-grid{grid-template-columns:1fr}
  .about-brand{grid-template-columns:1fr}
  .album-page-grid{grid-template-columns:1fr 1fr}
  .album-page-grid .media-slot.featured{grid-column:span 2}
  .mega-links{grid-template-columns:1fr}
  .mega-panel{width:100%}
  .short-list{grid-template-columns:1fr}
  .card-grid-3,.card-grid-4{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:767px){
  .bottom-nav{display:flex}
  .main{padding-bottom:calc(var(--bnav-h) + env(safe-area-inset-bottom,0px) + 24px)}
  .hero-content h1{font-size:30px}
  .hero-content p{font-size:14px;margin-bottom:18px}
  .hero-actions{flex-direction:column;align-items:flex-start}
  .quad-nav{grid-template-columns:1fr 1fr;padding:0 16px}
  .quad-card{padding:16px 14px;min-height:100px}
  .quad-card h3{font-size:15px}
  .section{padding:36px 0}
  .page-hero{padding:36px 0 28px}
  .page-hero h1{font-size:28px}
  .section-title{font-size:24px}
  .time-board{grid-template-columns:1fr}
  .interest-wall{grid-template-columns:repeat(2,1fr)}
  .card-grid-2,.card-grid-3,.card-grid-4{grid-template-columns:1fr}
  .album-page-grid{grid-template-columns:1fr}
  .album-page-grid .media-slot.featured{grid-column:auto}
  .footer-grid{grid-template-columns:1fr;gap:20px}
  .container{padding:0 16px}
  .featured-large .main-feature{padding:24px}
  .story-main{padding:24px}
  .navy-box{padding:22px 18px}
  .app-preview-image img,.app-preview-image .app-slot{max-width:200px}
}
@media (max-width:559px){
  .hero-content h1{font-size:28px}
  .quad-nav{gap:10px}
  .interest-wall{grid-template-columns:1fr 1fr;gap:10px}
  .interest-item{padding:12px 10px}
  .interest-item h3{font-size:14px}
}