:root{
  --bg:#f6f7f5; --card:#fff; --ink:#1d2421; --sub:#66716b; --line:#e2e6e3;
  --brand:#1f7a5a; --brand-ink:#fff; --accent:#e08a1e; --sky:#2b7fb8; --track:#e5484d;
}
@media (prefers-color-scheme:dark){
  :root{--bg:#121614;--card:#1b211e;--ink:#eaf0ec;--sub:#9aa79f;--line:#2b342f;--brand:#39b487;--brand-ink:#08130e;--accent:#f0a340;--sky:#6ab4e6}
}
*{box-sizing:border-box}
[hidden]{display:none !important}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.6 system-ui,"Hiragino Sans","Yu Gothic UI",sans-serif}
a{color:inherit;text-decoration:none}
a.u{color:var(--sky);text-decoration:underline}
header{position:sticky;top:0;z-index:5;background:var(--card);border-bottom:1px solid var(--line)}
.bar{max-width:1040px;margin:0 auto;padding:10px 16px;display:flex;align-items:center;gap:12px}
.logo{font-weight:800;font-size:22px;letter-spacing:.5px;color:var(--brand)}
nav{display:flex;gap:4px;flex:1}
nav a{padding:6px 12px;border-radius:8px;color:var(--sub);font-weight:600;font-size:14px}
nav a.on{background:var(--bg);color:var(--ink)}
.btn{display:inline-flex;align-items:center;gap:6px;background:var(--brand);color:var(--brand-ink);border:0;border-radius:10px;padding:9px 16px;font-weight:700;font-size:14px;cursor:pointer;font-family:inherit}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn.danger{background:#e5484d;color:#fff}
.btn.lg{padding:13px 22px;font-size:16px}
.btn.sm{padding:5px 12px;font-size:13px}
main{max-width:1040px;margin:0 auto;padding:20px 16px 90px}
h1{font-size:22px;margin:4px 0 14px} h2{font-size:17px;margin:26px 0 10px}
.muted{color:var(--sub);font-size:13px}
.hero{background:linear-gradient(135deg,#1f7a5a,#2b7fb8);color:#fff;border-radius:16px;padding:26px 22px;margin-bottom:8px}
.hero h1{font-size:24px;margin:0 0 6px}.hero p{margin:0 0 16px;opacity:.92}.hero .btn{background:#fff;color:#14503b}
.three{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:16px}
.three div{background:rgba(255,255,255,.14);border-radius:10px;padding:10px 12px;font-size:13px}.three b{display:block;font-size:14px}
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0}
.chip{border:1px solid var(--line);background:var(--card);border-radius:999px;padding:5px 14px;font-size:13px;font-weight:600;cursor:pointer;color:var(--sub);font-family:inherit}
.chip.on{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:14px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;display:block}
.card .thumb{height:140px;background:linear-gradient(135deg,#cfe0d4,#b9d3e6);position:relative;overflow:hidden}
.card .thumb img{width:100%;height:100%;object-fit:cover;display:block;position:absolute;inset:0}
.card .thumb svg{position:absolute;inset:0;width:100%;height:100%}
.card .body{padding:12px 14px}.card h3{margin:0 0 4px;font-size:15px;overflow-wrap:anywhere}
.meta{display:flex;gap:12px;flex-wrap:wrap;font-size:12px;color:var(--sub)}
.meta form{display:inline;margin:0}
.link-btn{background:none;border:0;padding:0;font:inherit;color:inherit;cursor:pointer}
.link-btn.danger{color:#e5484d}
.tag{display:inline-block;font-size:11px;padding:1px 8px;border:1px solid var(--line);border-radius:999px;color:var(--sub);margin-right:4px}
.kind{font-size:11px;font-weight:700;color:#fff;padding:1px 8px;border-radius:5px;margin-right:6px;background:var(--brand);white-space:nowrap}
.kind.paraglider{background:var(--sky)}.kind.hangglider{background:var(--brand)}.kind.other{background:var(--sub)}
.avatar{width:22px;height:22px;border-radius:50%;background:linear-gradient(135deg,#9bb8a8,#6a8c7b);display:inline-block;vertical-align:middle;margin-right:6px;object-fit:cover}
.avatar.lg{width:56px;height:56px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:12px 0}
.stat{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:10px 12px}.stat b{display:block;font-size:20px}.stat span{font-size:11px;color:var(--sub)}
.panel{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px;margin-bottom:14px}
.two{display:grid;grid-template-columns:1fr 300px;gap:16px}
.replay{width:100%;height:min(70vh,720px);border:1px solid var(--line);border-radius:14px;background:#000;display:block}
.play{position:absolute;right:8px;top:8px;z-index:2;background:#000b;color:#fff;font-size:11px;font-weight:700;padding:3px 9px;border-radius:999px}
.play-inline{color:var(--brand);font-weight:700}
.replay-stage{margin-bottom:16px}
.replay-locked{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;text-align:center;padding:36px 20px;min-height:260px;border:1px solid var(--line);border-radius:14px;background:linear-gradient(160deg,#16324a,#0d1c2a);color:#fff}
.replay-locked .lock-ico{font-size:34px;line-height:1}
.replay-locked b{font-size:18px}
.replay-locked p{margin:0;max-width:34em;font-size:14px;line-height:1.7;color:#dbe7f0}
.replay-bar{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap;margin:0 0 8px}
.replay-bar-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.ext-link{display:inline-flex;align-items:center;gap:6px;max-width:100%}
.ext-link span{color:var(--sub);font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:200px}
.replay-fs-link{display:none}
.replay-stage.fs .replay-fs-link{display:inline-flex;position:absolute;top:14px;left:50%;transform:translateX(-50%);z-index:1001;background:#000c;color:#fff;border-color:#fff5}
.replay-stage.fs .replay-fs-link span{color:#fffb}
.replay-fs-close{display:none}
/* モーダル全画面: iframeのDOM位置はそのまま(=再読み込みなし)で、CSSだけで画面いっぱいに広げる */
.replay-stage.fs{position:fixed;inset:0;z-index:1000;margin:0;background:#000;display:flex;flex-direction:column}
.replay-stage.fs .replay-bar{display:none}
.replay-stage.fs .replay{flex:1;width:100%;height:100%;border:0;border-radius:0}
.replay-stage.fs .replay-fs-close{display:flex;align-items:center;gap:6px;position:absolute;top:14px;right:14px;z-index:1001;background:#000c;color:#fff;border:1px solid #fff5;border-radius:999px;padding:8px 16px;font:600 13px/1 system-ui;cursor:pointer}
html.replay-lock,body.replay-lock{overflow:hidden;height:100%}
.body-text{white-space:pre-wrap;overflow-wrap:anywhere}
.share-row{display:flex;gap:8px;margin:-2px 0 14px}
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:8px;margin:10px 0}
.gallery img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:10px;display:block;background:var(--bg)}
.video-link{display:flex;align-items:center;gap:10px;color:inherit}
.video-link img{width:120px;height:68px;object-fit:cover;border-radius:8px;flex:none}
.video-link span{overflow-wrap:anywhere}
.react{display:flex;gap:8px;flex-wrap:wrap}
.react button{border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:999px;padding:6px 14px;cursor:pointer;font-size:14px;font-family:inherit}
.react button.mine{border-color:var(--brand);background:color-mix(in srgb,var(--brand) 14%,var(--card))}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:9px 8px;border-bottom:1px solid var(--line)}th{color:var(--sub);font-weight:600;font-size:12px}
#importTable td input[type=text]{padding:6px 8px;font-size:13px}
#importTable td input[type=checkbox]{width:auto}
tr.err-row td{color:var(--sub)}
label{display:block;font-weight:700;font-size:13px;margin:14px 0 5px}
input,textarea,select{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--card);color:var(--ink);font:inherit}
input[type=checkbox]{width:auto}
.check{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);border-radius:999px;padding:4px 12px;margin:0 6px 6px 0;font-weight:600;font-size:13px;color:var(--sub);background:var(--card)}
/* 投稿画面: ドロップ領域・プレビュー・フライト選択・エリア選択 */
.drop{position:relative;display:flex;align-items:center;justify-content:center;text-align:center;min-height:110px;margin:0;padding:18px;border:2px dashed var(--line);border-radius:14px;background:var(--card);cursor:pointer;font-weight:400}
.drop:hover,.drop.over{border-color:var(--brand);background:color-mix(in srgb,var(--brand) 8%,var(--card))}
.drop.busy{opacity:.6}
.drop input[type=file]{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:pointer}
.drop-t{display:flex;flex-direction:column;gap:4px;pointer-events:none}.drop-t b{font-size:15px;overflow-wrap:anywhere}
.pv{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:14px;margin-top:12px;align-items:start}
.pv-map{width:100%;height:auto;background:#dfe9e1;border-radius:12px;display:block;border:1px solid var(--line)}
.pv-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:6px;margin-bottom:8px}
.pv-stats div{background:var(--bg);border-radius:10px;padding:6px 10px}.pv-stats b{display:block;font-size:16px}.pv-stats span{font-size:11px;color:var(--sub)}
.pv-alt{width:100%;height:70px;display:block;background:var(--bg);border-radius:10px;margin-bottom:4px}
.seg-list{margin-top:8px;display:flex;flex-direction:column;gap:6px}
.seg-row{display:flex;flex-wrap:wrap;align-items:center;gap:6px 14px;margin:0;padding:8px 12px;border:1px solid var(--line);border-radius:10px;background:var(--card);font-weight:400;font-size:13px;cursor:pointer}
.seg-row.focus{border-color:var(--brand)}.seg-row input{width:auto}
.pill{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:8px;font-weight:600}
.sug{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-bottom:8px}
.area-search{position:relative;margin-bottom:8px}
.results{position:absolute;left:0;right:0;top:100%;z-index:20;margin:4px 0 0;padding:4px 0;list-style:none;background:var(--card);border:1px solid var(--line);border-radius:10px;max-height:260px;overflow:auto;box-shadow:0 8px 24px #0003}
.results button{display:block;width:100%;text-align:left;padding:8px 12px;border:0;background:none;color:var(--ink);font:inherit;cursor:pointer}.results button:hover{background:var(--bg)}
details.more{margin-top:16px;border-top:1px solid var(--line);padding-top:2px}
details.more>summary{cursor:pointer;font-weight:700;font-size:13px;color:var(--brand);list-style:none;padding:10px 0;user-select:none}
details.more>summary::-webkit-details-marker{display:none}
details.more>summary::before{content:'▸';display:inline-block;width:1em;transition:transform .15s}
details.more[open]>summary::before{transform:rotate(90deg)}
.photo-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(110px,1fr));gap:10px;margin-top:10px}
.photo-item{position:relative;border-radius:10px;overflow:hidden;background:var(--bg);aspect-ratio:1}
.photo-item img{width:100%;height:100%;object-fit:cover;display:block}
.photo-cover{position:absolute;left:4px;top:4px;background:#000a;color:#fff;font-size:10px;font-weight:700;padding:2px 7px;border-radius:999px}
.photo-actions{position:absolute;left:0;right:0;bottom:0;display:flex;gap:2px;padding:4px;background:linear-gradient(transparent,#000a)}
.photo-actions button{flex:1;background:#000a;color:#fff;border:0;border-radius:6px;padding:3px 0;font-size:12px;cursor:pointer}
#videoPreview img{border-radius:8px;display:block;margin-top:6px}
dialog{border:1px solid var(--line);border-radius:14px;background:var(--card);color:var(--ink);padding:18px;width:min(560px,calc(100vw - 32px))}
dialog.confirm-dialog{width:min(360px,calc(100vw - 32px))}
dialog.confirm-dialog p#confirmSubmitMsg{margin:0 0 16px;white-space:pre-wrap}
.confirm-actions{margin:0;display:flex;gap:8px;justify-content:flex-end}
dialog::backdrop{background:#0008}
dialog.lightbox{background:transparent;border:0;padding:0;width:auto;max-width:calc(100vw - 32px);max-height:calc(100vh - 32px);display:flex;align-items:center;justify-content:center}
dialog.lightbox img{display:block;max-width:calc(100vw - 32px);max-height:calc(100vh - 32px);border-radius:10px;cursor:zoom-out}
dialog.lightbox{overflow:hidden}
.lb-btn{position:fixed;z-index:2;width:44px;height:44px;border-radius:50%;border:1px solid #fff5;background:#000b;color:#fff;font-size:24px;line-height:1;cursor:pointer;display:grid;place-items:center;padding:0}
.lb-btn:hover{background:#000e}
.lb-close{top:14px;right:14px}
.lb-prev{left:14px;top:50%;transform:translateY(-50%)}
.lb-next{right:14px;top:50%;transform:translateY(-50%)}
.lb-count{position:fixed;bottom:14px;left:50%;transform:translateX(-50%);background:#000b;color:#fff;font:600 12px/1 system-ui;padding:6px 12px;border-radius:999px}
input:disabled{opacity:.55}
.row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.notice{border-left:4px solid var(--accent);background:var(--card);padding:12px 14px;border-radius:8px;margin-bottom:14px}
.flash{background:color-mix(in srgb,var(--brand) 14%,var(--card));border-radius:10px;padding:10px 14px;margin-bottom:14px}
.flash.achievement{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;padding:14px 16px}
.flash.achievement div{display:flex;flex-direction:column;gap:2px}
.flash.achievement b{font-size:15px}
.flash.achievement span{color:var(--sub);font-size:13px}
.err{background:color-mix(in srgb,#e5484d 14%,var(--card));border-radius:10px;padding:10px 14px;margin-bottom:14px}
.comment{padding:10px 0;border-bottom:1px solid var(--line)}
footer{max-width:1040px;margin:0 auto;padding:0 16px 40px;color:var(--sub);font-size:12px}
.lang a{color:var(--sub);font-size:12px;margin-left:8px}.lang a.on{color:var(--ink);font-weight:700}
.tabbar{display:none}
.progress-bar{height:8px;border-radius:999px;background:var(--bg);border:1px solid var(--line);overflow:hidden;margin-bottom:6px}
.progress-bar>div{height:100%;width:0%;background:var(--brand);transition:width .2s}
.form-actions-sticky{display:flex;gap:10px}
@media(max-width:800px){
  .pv{grid-template-columns:1fr}.two{grid-template-columns:1fr}.stats{grid-template-columns:repeat(2,1fr)}.three,.row{grid-template-columns:1fr}
  .replay{height:min(55vh,480px)}
  /* ナビは下部タブバーに集約し、ヘッダーは軽くする */
  header nav,header .btn{display:none}
  .bar{gap:8px}
  main,footer{padding-bottom:84px}
  .tabbar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:6;background:var(--card);border-top:1px solid var(--line);padding:6px 4px calc(6px + env(safe-area-inset-bottom))}
  .tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;padding:4px 0;font-size:10px;font-weight:600;color:var(--sub);line-height:1}
  .tabbar a.on{color:var(--brand)}
  .tabbar a.tabbar-plus{justify-content:flex-start}
  .tabbar-plus-badge{display:flex;align-items:center;justify-content:center;width:42px;height:42px;margin-top:-20px;border-radius:50%;background:var(--brand);color:var(--brand-ink);font-size:22px;font-weight:800;box-shadow:0 2px 10px #0004}
  /* iOSでフォーム操作時に勝手に拡大されないよう16px以上にする */
  input,textarea,select{font-size:16px}
  /* 投稿フォームの保存/プレビューを画面下に固定し、長いフォームでも常に押せるようにする */
  #postForm .form-actions-sticky{position:sticky;bottom:calc(60px + env(safe-area-inset-bottom));margin:14px -16px -16px;padding:10px 16px;background:var(--card);border-top:1px solid var(--line);z-index:3}
  #postForm .form-actions-sticky .btn{flex:1;justify-content:center}
}

/* ---- ハンバーガーメニュー(右上) ---- */
.bar{position:relative}
.menu{position:relative;margin-left:4px}
.menu-btn{list-style:none;display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:var(--card);cursor:pointer}
.menu-btn::-webkit-details-marker{display:none}
.menu-btn:hover,.menu[open]>.menu-btn{background:var(--bg)}
.bars,.bars::before,.bars::after{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);content:"";position:relative}
.bars::before{position:absolute;top:-6px;left:0}.bars::after{position:absolute;top:6px;left:0}
.menu-panel{position:absolute;right:0;top:calc(100% + 8px);z-index:20;min-width:270px;max-width:calc(100vw - 24px);background:var(--card);border:1px solid var(--line);border-radius:14px;padding:8px;box-shadow:0 8px 28px #0003}
.menu-panel a.ext::after{content:"";display:inline-block;width:11px;height:11px;margin-left:6px;vertical-align:-1px;background:currentColor;opacity:.55;-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M14 3h7v7h-2V6.4l-9.3 9.3-1.4-1.4L17.6 5H14V3zM5 5h6v2H7v10h10v-4h2v6H5V5z'/%3E%3C/svg%3E") center/contain no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M14 3h7v7h-2V6.4l-9.3 9.3-1.4-1.4L17.6 5H14V3zM5 5h6v2H7v10h10v-4h2v6H5V5z'/%3E%3C/svg%3E") center/contain no-repeat}
.menu-panel a,.menu-panel button{display:block;width:100%;text-align:left;padding:10px 12px;border-radius:8px;font-size:14px;font-weight:600;color:var(--ink);background:none;border:0;cursor:pointer;font-family:inherit}
.menu-panel a:hover,.menu-panel button:hover{background:var(--bg)}
.menu-panel a.menu-cta{background:var(--brand);color:var(--brand-ink);text-align:center}
.menu-panel a.menu-cta:hover{background:var(--brand);opacity:.9}
.menu-user{padding:6px 12px 8px;font-size:12px;color:var(--sub);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.menu-sep{height:1px;background:var(--line);margin:6px 4px}
.menu-lang{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 12px;font-size:12px;color:var(--sub)}
.menu-lang a{display:inline-block;width:auto;padding:4px 10px;margin-left:4px;border:1px solid var(--line);border-radius:999px;font-size:12px;color:var(--sub)}
.menu-lang a.on{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.footer-links{display:flex;flex-wrap:wrap;gap:4px 16px;margin-top:6px}
.footer-links a{color:var(--sub);text-decoration:underline}
/* ---- ご利用規約・新規登録 ---- */
.terms{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:6px 18px 18px;line-height:1.85;font-size:14px;max-width:820px}
.terms h3{font-size:15px;margin:22px 0 6px}
.terms p{margin:0 0 6px;overflow-wrap:anywhere}.terms p.sub{padding-left:1.4em}
.terms .terms-date{margin-top:24px;color:var(--sub)}.terms .terms-op{color:var(--sub);font-size:13px}
.agree{display:flex;gap:10px;align-items:flex-start;margin:14px 0 6px;font-size:14px;line-height:1.6;font-weight:600}
.agree input{margin-top:4px;width:18px;height:18px;flex:none;padding:0}
.signup-links{margin-top:10px;font-size:13px;color:var(--sub);line-height:2}
@media(max-width:800px){.bar{padding:8px 12px}.bar>a.muted{display:none}.menu{margin-left:auto}.menu-panel{position:fixed;left:12px;right:12px;top:58px;max-width:none}.menu-panel a,.menu-panel button{padding:13px 12px;font-size:15px}.terms{padding:4px 14px 16px}}
.tbl{width:100%;border-collapse:collapse;font-size:13px}.tbl th,.tbl td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--line);vertical-align:middle}.tbl th{color:var(--sub);font-weight:700;font-size:12px}
.notice{background:color-mix(in srgb,var(--sky) 10%,var(--card));border:1px solid var(--line);border-radius:10px;padding:10px 14px;margin:10px 0;font-size:14px}