:root{
--theme:#2bb6a3; --theme-d:#1f7a6c; --theme-l:#e8f7f4;
--orange:#f4a259; --ink:#1f2a30; --muted:#6b7a82; --line:#e8edf0;
--bg:#fbfdfc; --card:#fff; --radius:16px; --shadow:0 6px 24px rgba(31,122,108,.08);
--maxw:1100px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
font-family:-apple-system,"PingFang SC","Microsoft YaHei",Segoe UI,Roboto,Helvetica,Arial,sans-serif;
color:var(--ink); background:var(--bg); line-height:1.6; -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--theme-d);text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 18px}
.muted{color:var(--muted)}
.center{text-align:center}
h1,h2,h3{line-height:1.25;margin:0 0 .4em}
/* ---------- 按钮 ---------- */
.btn{
display:inline-block;background:var(--theme);color:#fff;border:none;border-radius:999px;
padding:11px 22px;font-size:15px;font-weight:600;cursor:pointer;transition:.2s;box-shadow:var(--shadow);
}
.btn:hover{background:var(--theme-d);transform:translateY(-1px)}
.btn.ghost{background:#fff;color:var(--theme-d);border:1.5px solid var(--theme);box-shadow:none}
.btn.ghost:hover{background:var(--theme-l)}
.btn-mini{display:inline-block;background:var(--theme);color:#fff;border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600}
.btn-mini.ghost{background:#fff;color:var(--theme-d);border:1px solid var(--theme)}
.link-muted{color:var(--muted);font-size:14px}
.link-muted:hover{color:var(--theme)}
/* ---------- 顶栏 ---------- */
.topbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:18px;height:62px}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:20px;color:var(--ink)}
.brand-dot{width:14px;height:14px;border-radius:50%;background:var(--theme);box-shadow:0 0 0 4px var(--theme-l)}
.brand-name{color:var(--theme-d)}
.nav-links{margin-left:auto;display:flex;align-items:center;gap:18px}
.nav-links a{color:var(--ink);font-weight:500;font-size:15px;padding:4px 2px}
.nav-links a.active{color:var(--theme-d);border-bottom:2px solid var(--theme)}
.nav-links a.btn-mini{color:#fff}
.nav-toggle{display:none;background:none;border:none;font-size:24px;margin-left:auto;cursor:pointer}
/* ---------- Hero ---------- */
.hero{position:relative;background:linear-gradient(135deg,var(--theme) 0%,#39c7b3 55%,#7fd6c8 100%);color:#fff;overflow:hidden;padding:64px 0 96px}
.hero-inner{max-width:var(--maxw);margin:0 auto;padding:0 18px;text-align:center}
.hero-badge{display:inline-block;background:rgba(255,255,255,.2);border:1px solid rgba(255,255,255,.4);padding:5px 14px;border-radius:999px;font-size:13px;margin-bottom:18px}
.hero h1{font-size:clamp(28px,5vw,46px);font-weight:800;margin:0 0 12px;text-shadow:0 2px 10px rgba(0,0,0,.12)}
.hero-sub{font-size:17px;opacity:.95;margin:0 0 26px}
.hero-search{display:flex;max-width:520px;margin:0 auto 22px;background:#fff;border-radius:999px;padding:6px 6px 6px 18px;box-shadow:var(--shadow)}
.hero-search input{flex:1;border:none;outline:none;font-size:15px;background:transparent}
.hero-search button{border:none;background:var(--orange);color:#fff;font-weight:700;padding:10px 22px;border-radius:999px;cursor:pointer;font-size:15px}
.hero-cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.hero-cta .btn{background:#fff;color:var(--theme-d)}
.hero-cta .btn.ghost{background:transparent;color:#fff;border:1.5px solid #fff}
.hero-wave{position:absolute;left:0;right:0;bottom:-1px;height:48px;background:var(--bg);border-radius:50% 50% 0 0/100% 100% 0 0}
/* ---------- 数据条 ---------- */
.stats{max-width:var(--maxw);margin:-40px auto 10px;display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.stats>div{background:var(--card);border-radius:var(--radius);padding:18px;text-align:center;box-shadow:var(--shadow)}
.stats b{display:block;font-size:26px;color:var(--theme-d)}
.stats span{color:var(--muted);font-size:13px}
/* ---------- 区块 / 卡片 ---------- */
.block{padding:42px 0}
.block-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:18px}
.block-head h2{font-size:24px}
.more{font-weight:600;color:var(--theme-d)}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:18px}
.card{background:var(--card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.2s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);box-shadow:0 12px 30px rgba(31,122,108,.16)}
.card-cover{height:150px;background-size:cover;background-position:center;position:relative}
.badge{position:absolute;left:10px;top:10px;color:#fff;font-size:12px;font-weight:700;padding:3px 10px;border-radius:999px;background:var(--theme)}
.badge.big{position:static;display:inline-block;font-size:14px;padding:5px 14px;margin-bottom:12px}
.card-body{padding:14px 16px 18px}
.card-body h3{font-size:17px;margin:0 0 6px}
.card-body .meta{color:var(--muted);font-size:13px;margin:0 0 8px}
.excerpt{color:#41525a;font-size:13.5px;margin:0}
/* ---------- 地图引导 ---------- */
.map-promo{background:var(--theme-l);padding:46px 0}
.map-promo-inner{max-width:var(--maxw);margin:0 auto;padding:0 18px;display:flex;gap:30px;align-items:center;flex-wrap:wrap}
.map-promo-inner h2{font-size:26px}
.map-promo-inner p{color:#3c5450;max-width:520px;margin:0 0 18px}
.map-promo-art{flex:1;min-width:220px}
.map-promo-art svg{width:100%;height:auto}
/* ---------- 相册瀑布 ---------- */
.masonry{columns:4 200px;column-gap:12px}
.m-item{break-inside:avoid;margin:0 0 12px;position:relative;border-radius:12px;overflow:hidden;display:block;background:#eee}
.m-item img{width:100%;transition:.2s}
.m-item:hover img{transform:scale(1.04)}
.m-cap{position:absolute;left:0;right:0;bottom:0;padding:16px 10px 8px;font-size:12.5px;color:#fff;background:linear-gradient(transparent,rgba(0,0,0,.6))}
.m-item figcaption{padding:8px 10px;font-size:13px;color:var(--ink);background:#fff}
/* ---------- 步骤 ---------- */
.steps h2{text-align:center;font-size:26px}
.step-row{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:24px 0}
.step{background:var(--card);border-radius:var(--radius);padding:24px;text-align:center;box-shadow:var(--shadow)}
.step .num{display:inline-flex;width:42px;height:42px;align-items:center;justify-content:center;background:var(--theme);color:#fff;border-radius:50%;font-weight:800;font-size:20px;margin-bottom:10px}
.step h3{font-size:18px}.step p{color:var(--muted);margin:0}
.center{text-align:center}
/* ---------- 筛选 ---------- */
.filterbar{margin-bottom:22px}
.filterbar .search{width:100%;max-width:420px;padding:11px 16px;border:1px solid var(--line);border-radius:999px;font-size:15px;outline:none;margin-bottom:12px}
.filterbar .search:focus{border-color:var(--theme)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:8px}
.chip{padding:6px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--ink);font-size:13.5px}
.chip.soft{background:var(--theme-l);border-color:transparent;color:var(--theme-d)}
.chip.on{background:var(--theme);color:#fff;border-color:var(--theme)}
.chip.soft.on{background:var(--theme-d);color:#fff}
/* ---------- 详情页 ---------- */
.detail{padding:30px 0 50px}
.back{display:inline-block;color:var(--muted);margin-bottom:14px}
.detail-hero{height:220px;background-size:cover;background-position:center;border-radius:var(--radius);margin-bottom:18px}
.detail h1{font-size:30px}
.detail .meta{color:var(--muted)}
.lead{font-size:16px;color:#33454c;max-width:760px}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px;margin:22px 0}
.fact{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px 16px}
.fact-lab{font-weight:700;color:var(--theme-d);margin-bottom:4px}
.fact-val{color:#3a4a51;white-space:pre-wrap;font-size:14.5px}
.detail-actions{display:flex;gap:12px;flex-wrap:wrap;margin:18px 0 30px}
.sub{font-size:22px;margin:30px 0 16px}
/* ---------- 认证 / 表单 ---------- */
.auth{max-width:440px;margin:40px auto;padding:0 18px}
.auth h2{font-size:26px}
.form{background:var(--card);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:14px}
.form.wide{max-width:620px;margin:0 auto}
.form label{display:flex;flex-direction:column;gap:6px;font-weight:600;font-size:14px;color:#33454c}
.form input,.form select,.form textarea{border:1px solid var(--line);border-radius:10px;padding:11px 13px;font-size:15px;font-family:inherit;outline:none}
.form input:focus,.form textarea:focus,.form select:focus{border-color:var(--theme)}
.form textarea{resize:vertical}
.form .check{flex-direction:row;align-items:center;gap:8px;font-weight:500}
.filelabel{border:2px dashed var(--theme);border-radius:12px;padding:16px;text-align:center;color:var(--theme-d);background:var(--theme-l);cursor:pointer}
/* ---------- 个人页 / 时间轴 ---------- */
.profile{padding:30px 0 50px}
.profile-head{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-bottom:24px}
.avatar{width:84px;height:84px;border-radius:50%;object-fit:cover;background:var(--theme);box-shadow:var(--shadow)}
.profile-head h1{font-size:26px;display:flex;align-items:center;gap:10px}
.role{font-size:12px;background:var(--orange);color:#fff;padding:2px 9px;border-radius:999px;font-weight:700}
.profile-head .meta{color:var(--muted);margin:2px 0 8px}
.pstats{display:flex;gap:18px}
.pstats b{color:var(--theme-d)}
.profile-head .btn{margin-left:auto}
.empty-tl{text-align:center;padding:40px;color:var(--muted);background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow)}
/* ===== 时间河流 ===== */
.tl-hint{text-align:center;color:var(--muted);font-size:13px;margin-bottom:10px}
.tl-viewport{overflow-x:auto;overflow-y:hidden;padding:6px 0 26px;cursor:grab;scrollbar-width:thin;background:
radial-gradient(1200px 200px at 50% 30%, #f3fbf9, #ffffff 70%)}
.tl-viewport.dragging{cursor:grabbing}
.tl-viewport::-webkit-scrollbar{height:8px}
.tl-viewport::-webkit-scrollbar-thumb{background:var(--theme);border-radius:8px}
.tl-track{display:inline-flex;align-items:flex-start;gap:0;padding:14px 34px 10px;position:relative}
/* 河流本体：贯穿时间轴的一条流动水带 */
.tl-river{position:absolute;top:56px;left:0;right:0;height:56px;background:linear-gradient(180deg,#8fe0d2,#2bb6a3);
border-radius:28px/30px;overflow:hidden;box-shadow:inset 0 6px 14px rgba(0,0,0,.12),0 4px 12px rgba(31,122,108,.18)}
.tl-river .wave{position:absolute;inset:0;background-repeat:repeat-x;background-size:140px 100%;animation:flow 7s linear infinite}
.tl-river .w1{background-image:url("data:image/svg+xml;utf8,")}
.tl-river .w2{opacity:.5;animation-duration:11s;animation-direction:reverse;background-image:url("data:image/svg+xml;utf8,")}
.tl-river .ripple-line{position:absolute;left:0;right:0;top:50%;height:2px;background:rgba(255,255,255,.45)}
@keyframes flow{from{background-position-x:0}to{background-position-x:140px}}
.tl-node{position:relative;width:230px;flex:0 0 230px;padding:0 14px;display:inline-flex;flex-direction:column;align-items:center}
.tl-date{height:42px;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;font-weight:800;color:var(--theme-d);font-size:14px}
.tl-date span{font-size:22px;line-height:1}
/* 圆点浮标（停靠在河面上） */
.tl-dot{height:56px;width:56px;margin:0;display:flex;align-items:center;justify-content:center;position:relative;z-index:2}
.tl-dot::before{content:"";width:24px;height:24px;border-radius:50%;background:inherit;box-shadow:0 0 0 5px #fff,0 3px 8px rgba(0,0,0,.25);border:3px solid #fff}
.tl-card{background:var(--card);border-radius:14px;overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line);margin-top:6px;width:100%}
.tl-card:hover{transform:translateY(-3px);transition:.2s}
.tl-cover{display:block;height:130px;background:#dfeeec;overflow:hidden}
.tl-cover img{width:100%;height:100%;object-fit:cover}
.tl-cover.empty{display:flex;align-items:center;justify-content:center;font-size:34px;color:var(--theme)}
.tl-card-body{padding:12px 14px}
.tl-spot{display:inline-block;font-size:12px;color:var(--theme-d);background:var(--theme-l);padding:2px 9px;border-radius:999px;margin-bottom:6px}
.tl-card-body h3{font-size:16px;margin:0 0 6px}
.tl-excerpt{color:var(--muted);font-size:13px;margin:0 0 8px}
.tl-thumbs{display:flex;gap:4px;margin-bottom:8px;flex-wrap:wrap}
.tl-thumbs a{width:46px;height:46px;border-radius:8px;overflow:hidden;position:relative}
.tl-thumbs img{width:100%;height:100%;object-fit:cover}
.more-ph{width:46px;height:46px;border-radius:8px;background:#eef3f2;color:var(--theme-d);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700}
.tl-foot{display:flex;justify-content:space-between;align-items:center;font-size:12.5px;color:var(--muted)}
/* ---------- 地图页 ---------- */
.map-page{padding:24px 0 50px}
.map-tools{display:flex;gap:6px}
.map-tools button{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;font-size:18px;cursor:pointer;color:var(--theme-d)}
.map-tools button:hover{background:var(--theme-l)}
.map-tip{margin:0 0 14px}
.map-stage{position:relative;background:linear-gradient(180deg,#f3fbf9,#eaf6f3);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;height:min(70vh,600px);touch-action:none;cursor:grab}
.map-stage.grabbing{cursor:grabbing}
#mapSvg{width:100%;height:100%;display:block}
.pt{cursor:pointer}
.pt-circle{transition:.15s}
.pt:hover .pt-circle{r:14}
.pt-label{font-size:15px;font-weight:700;fill:var(--ink)}
.pt-sub{font-size:11px;fill:var(--muted)}
.trib{font-size:11px;fill:#9bbdb6;font-style:italic}
.zone{font-size:13px;fill:#9aa7ad;font-weight:600}
.map-detail{position:absolute;top:14px;right:14px;width:min(360px,90%);max-height:calc(100% - 28px);overflow:auto;background:#fff;border-radius:14px;box-shadow:0 10px 40px rgba(0,0,0,.18);padding:20px;z-index:5}
.map-detail[hidden]{display:none}
.map-close{position:absolute;top:10px;right:12px;border:none;background:none;font-size:24px;cursor:pointer;color:var(--muted)}
.map-detail .lead{font-size:14px}
.facts-mini div{padding:7px 0;border-top:1px solid var(--line);font-size:14px;color:#3a4a51}
.facts-mini b{display:inline-block;width:24px}
.map-compass{position:absolute;left:14px;top:14px;width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,.85);display:flex;align-items:center;justify-content:center;font-weight:800;color:var(--theme-d);box-shadow:var(--shadow)}
.map-scale{position:absolute;left:14px;bottom:14px;font-size:12px;color:var(--muted);background:rgba(255,255,255,.85);padding:3px 8px;border-radius:6px}
.map-scale span{display:inline-block;width:40px;height:3px;background:var(--ink);vertical-align:middle;margin-right:6px}
/* ---------- 灯箱 ---------- */
.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.85);display:none;align-items:center;justify-content:center;z-index:100;padding:20px}
.lightbox.show{display:flex}
.lightbox img{max-width:100%;max-height:100%;border-radius:8px}
.lb-close{position:absolute;top:18px;right:22px;border:none;background:none;color:#fff;font-size:38px;cursor:pointer}
/* ---------- 闪信 ---------- */
.flash{max-width:var(--maxw);margin:14px auto 0;padding:12px 16px;border-radius:12px;font-weight:600}
.flash-ok{background:#e3f6ee;color:#1f7a5a}
.flash-error{background:#fdeaea;color:#b23b3b}
/* ---------- 分页 ---------- */
.pager{display:flex;gap:8px;justify-content:center;margin-top:22px;flex-wrap:wrap}
.pager a{padding:7px 13px;border-radius:10px;background:#fff;border:1px solid var(--line);color:var(--ink)}
.pager a.on{background:var(--theme);color:#fff;border-color:var(--theme)}
/* ---------- 页脚 ---------- */
.site-footer{background:#10302b;color:#cfe7e1;margin-top:40px;padding:40px 0 24px}
.footer-grid{max-width:var(--maxw);margin:0 auto;padding:0 18px;display:grid;grid-template-columns:2fr 1fr 2fr;gap:24px}
.site-footer h4{color:#fff;margin:0 0 10px}
.site-footer a{display:block;color:#bfe0d9;margin-bottom:6px}
.site-footer .brand-name{color:#fff}
.copy{max-width:var(--maxw);margin:24px auto 0;padding:16px 18px 0;border-top:1px solid rgba(255,255,255,.12);color:#8fb6ae;font-size:13px}
/* ---------- 响应式 ---------- */
@media (max-width:820px){
.nav-toggle{display:block}
.nav-links{position:absolute;top:62px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:8px 18px 16px;border-bottom:1px solid var(--line);display:none}
.nav-links.open{display:flex}
.nav-links a{padding:12px 4px;border-bottom:1px solid var(--line)}
.nav-links a.active{border-bottom:2px solid var(--theme)}
.stats{grid-template-columns:repeat(2,1fr);margin-top:-30px}
.step-row{grid-template-columns:1fr}
.map-promo-inner{flex-direction:column;align-items:flex-start}
.footer-grid{grid-template-columns:1fr}
.map-detail{top:auto;bottom:0;left:0;right:0;width:100%;max-height:55%;border-radius:14px 14px 0 0}
}
@media (max-width:480px){
.hero{padding:48px 0 80px}
.stats b{font-size:22px}
}