/* ============ C999 凤凰飞行社 · 数字作品馆 ============ */
/* 桌面 + 移动端双端适配：触屏设备由 html.touch 标记 */
:root{
  --bg:#070708; --panel:#0C0D11; --panel2:#101218; --line:rgba(255,255,255,.08);
  --accent:#FFB347; --accent2:#B1E2FF; --danger:#FF6B6B;
  --t1:#FFFFFF; --t2:#9DA3AE; --t3:#6B7078; --t4:#4A4E55;
  --mono:'IBM Plex Mono',ui-monospace,'SF Mono',Consolas,'Courier New',monospace;
  --sans:'Noto Sans SC','PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  --radius:16px;
  --nav-h:72px;
  --pad-x:64px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--t1);font-family:var(--sans);line-height:1.6;overflow-x:hidden;
  -webkit-tap-highlight-color:transparent;overscroll-behavior-y:none}
::selection{background:rgba(255,179,71,.35)}
.mono{font-family:var(--mono)}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.accent{color:var(--accent)}
/* 触屏 / 桌面文案切换 */
.hint-touch{display:none}

/* ---------- 导航 ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:14px max(24px,env(safe-area-inset-right)) 14px max(24px,env(safe-area-inset-left));
  background:rgba(7,7,8,.78);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand-logo{width:44px;height:44px;border-radius:50%;border:2px solid rgba(255,255,255,.15);object-fit:cover;flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-text strong{font-size:16px;font-weight:700;white-space:nowrap}
.brand-text em{font-style:normal;font-family:var(--mono);font-size:9px;letter-spacing:2px;color:var(--accent);white-space:nowrap}
.nav-links{display:flex;gap:32px}
.nav-links a{font-size:14px;color:var(--t2);transition:color .2s}
.nav-links a:hover{color:#fff}
.nav-right{display:flex;align-items:center;gap:10px}
.nav-cta{font-size:13px;font-weight:700;color:#141414;background:var(--accent);padding:9px 20px;border-radius:8px;
  white-space:nowrap;transition:transform .15s, box-shadow .2s}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 6px 24px rgba(255,179,71,.35)}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:42px;height:42px;padding:0 10px;
  background:transparent;border:1px solid var(--line);border-radius:11px;cursor:pointer}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:#E8EAEE;transition:transform .25s, opacity .2s}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-drawer{position:fixed;top:calc(var(--nav-h) + 6px);left:12px;right:12px;z-index:99;display:none;flex-direction:column;
  background:rgba(10,11,15,.97);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border:1px solid var(--line);border-radius:16px;padding:10px;box-shadow:0 24px 60px rgba(0,0,0,.6)}
.nav-drawer.open{display:flex}
.nav-drawer a{padding:14px 16px;border-radius:11px;font-size:15px;color:var(--t2);transition:background .16s, color .16s}
.nav-drawer a:active{background:rgba(255,179,71,.14);color:#fff}

/* ---------- HERO ---------- */
.hero{position:relative;padding:170px var(--pad-x) 90px;overflow:hidden;
  background:radial-gradient(1200px 500px at 70% -10%,rgba(255,179,71,.08),transparent 60%),
             radial-gradient(900px 480px at 15% 15%,rgba(177,226,255,.05),transparent 55%),var(--bg)}
.hero-inner{max-width:1280px;margin:0 auto;display:flex;gap:60px;align-items:center}
.hero-text{flex:1;min-width:0}
.badge{display:inline-block;font-size:11px;font-weight:600;letter-spacing:1.5px;color:var(--accent2);
  padding:7px 14px;border-radius:999px;background:#0D1017;border:1px solid rgba(177,226,255,.25)}
.hero h1{margin:26px 0 20px;font-size:clamp(34px,4.6vw,60px);font-weight:900;line-height:1.18;letter-spacing:-1px}
.hero-sub{max-width:640px;font-size:16px;color:var(--t2)}
.hero-cta{display:flex;gap:16px;margin:32px 0 40px;flex-wrap:wrap}
.btn{display:inline-block;font-size:15px;padding:14px 30px;border-radius:10px;font-weight:700;transition:transform .15s, box-shadow .2s, background .2s}
.btn-primary{background:var(--accent);color:#141414}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 32px rgba(255,179,71,.35)}
.btn-ghost{background:#111318;border:1px solid rgba(255,255,255,.14);color:#E8EAEE;font-weight:500}
.btn-ghost:hover{background:#171a20}
.hero-stats{display:flex;gap:52px;flex-wrap:wrap}
.stat b{display:block;font-size:30px;color:var(--accent);font-weight:700}
.stat span{font-size:12px;color:var(--t3)}
.hero-badge{flex:0 0 300px;text-align:center;position:relative}
.hero-badge img{width:280px;height:280px;border-radius:50%;margin:0 auto;
  box-shadow:0 0 90px rgba(255,179,71,.22),0 0 0 1px rgba(255,255,255,.08);
  animation:float 6s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
.badge-caption{margin-top:22px;font-size:10px;letter-spacing:2px;color:var(--t3)}
.hero-glow{position:absolute;bottom:-200px;left:50%;transform:translateX(-50%);width:900px;height:260px;
  background:radial-gradient(closest-side,rgba(255,179,71,.13),transparent);pointer-events:none}

/* ---------- 通用 Section ---------- */
.section{max-width:1280px;margin:0 auto;padding:96px var(--pad-x) 20px}
section[id]{scroll-margin-top:calc(var(--nav-h) + 12px)}
.section-head{margin-bottom:44px;max-width:860px}
.label{font-size:12px;font-weight:600;letter-spacing:2px;color:var(--accent)}
.section-head h2{font-size:clamp(26px,3.2vw,40px);font-weight:900;letter-spacing:-.5px;margin:14px 0 14px}
.section-head p{font-size:15px;color:var(--t2)}
.section-head p b{color:var(--accent2);font-weight:600}

/* ---------- 3D 展台 ---------- */
.viewer-shell{position:relative;border:1px solid var(--line);border-radius:20px;background:var(--panel);overflow:hidden}
/* 画布 + 信息面板的定位容器：让信息面板相对画布定位，绝不压到工具栏 */
.viewer-viewport{position:relative}
.viewer-toolbar{position:relative;z-index:6;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:14px 18px;border-bottom:1px solid var(--line);background:var(--panel2)}
.model-tabs{display:flex;gap:8px;flex-wrap:wrap;min-width:0}
.tab-btn{font-size:13px;color:var(--t2);background:transparent;border:1px solid var(--line);
  padding:8px 16px;border-radius:999px;cursor:pointer;transition:all .2s;font-family:var(--sans)}
.tab-btn:hover{color:#fff;border-color:rgba(255,255,255,.25)}
.tab-btn.active{color:#141414;background:var(--accent);border-color:var(--accent);font-weight:700}
.view-controls{display:flex;align-items:center;gap:8px}
.mode-group{display:flex;background:#0A0B0F;border:1px solid var(--line);border-radius:10px;padding:3px;gap:3px}
.mode-btn{display:flex;align-items:center;gap:7px;font-size:13px;color:var(--t2);background:transparent;border:0;
  padding:7px 14px;border-radius:8px;cursor:pointer;transition:all .2s;font-family:var(--sans)}
.mode-btn svg{width:16px;height:16px;flex:0 0 auto}
.mode-btn:hover{color:#fff}
.mode-btn.active{background:var(--accent);color:#141414;font-weight:700}
.mode-btn:disabled{opacity:.28;cursor:not-allowed}
.mode-btn:disabled:hover{color:var(--t2)}
.v-sep{width:1px;height:22px;background:var(--line)}
.tool-btn{width:36px;height:36px;display:grid;place-items:center;background:transparent;border:1px solid var(--line);
  border-radius:9px;color:var(--t2);cursor:pointer;transition:all .2s}
.tool-btn svg{width:17px;height:17px}
.tool-btn:hover{color:#fff;border-color:rgba(255,255,255,.3)}
.tool-btn.active{color:var(--accent);border-color:rgba(255,179,71,.5)}

.viewer-stage{position:relative;height:min(62vh,640px);min-height:460px;background:
  radial-gradient(900px 420px at 50% 0%,rgba(177,226,255,.05),transparent 60%),#08090C;
  overscroll-behavior:contain}
#gl{width:100%;height:100%;display:block;outline:none;touch-action:none}
.stage-loading{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
  background:rgba(8,9,12,.82);z-index:5;transition:opacity .4s;padding:0 24px;text-align:center}
.stage-loading.hide{opacity:0;pointer-events:none}
.spinner{width:34px;height:34px;border-radius:50%;border:3px solid rgba(255,179,71,.2);border-top-color:var(--accent);
  animation:spin 0.9s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
#loadingText{font-size:11px;letter-spacing:2px;color:var(--t2);word-break:break-all}
.load-bar{width:220px;max-width:70vw;height:3px;border-radius:99px;background:rgba(255,255,255,.08);overflow:hidden}
.load-bar i{display:block;height:100%;width:0;background:var(--accent);transition:width .2s}

/* 模型信息：桌面端浮在画布右上，移动端移到画布下方（见媒体查询）
   top 相对 .viewer-viewport（画布），不再用固定 px 对齐工具栏高度 */
.stage-info{position:absolute;top:16px;right:16px;width:280px;background:rgba(10,11,15,.86);backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);border:1px solid var(--line);border-radius:14px;padding:18px;z-index:4}
.info-name{font-size:17px;font-weight:700}
.info-tag{font-size:10px;letter-spacing:1.6px;color:var(--accent);margin:5px 0 10px}
.info-desc{font-size:12.5px;color:var(--t2);line-height:1.65}
.info-meta{margin-top:12px;font-size:10.5px;letter-spacing:1px;color:var(--t3)}

.stage-hint{position:absolute;left:18px;bottom:16px;max-width:calc(100% - 36px);font-size:11px;letter-spacing:.6px;color:var(--t2);
  background:rgba(10,11,15,.8);border:1px solid var(--line);border-radius:10px;padding:9px 14px;z-index:4;
  transition:opacity .5s}
.stage-hint b{color:var(--accent)}
.stage-hint.faded{opacity:0}
.stage-lock{position:absolute;inset:0;display:none;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  background:rgba(8,9,12,.55);z-index:6;font-size:15px;color:#E8EAEE;cursor:pointer;pointer-events:none;text-align:center;padding:0 20px}
.stage-lock.on{display:flex;animation:lockIn .35s ease}
@keyframes lockIn{from{opacity:0}to{opacity:1}}
.lock-icon{font-size:28px;color:var(--accent);opacity:.9}
.stage-lock b{color:var(--accent)}
.lock-sub{font-size:12.5px;color:var(--t2);margin-top:2px}

/* 触屏虚拟摇杆（仅移动端 + 第一人称模式显示） */
.joystick{position:absolute;left:max(16px,env(safe-area-inset-left));bottom:max(22px,env(safe-area-inset-bottom));
  width:126px;height:126px;border-radius:50%;display:none;z-index:8;touch-action:none;
  background:radial-gradient(circle at 50% 50%,rgba(255,255,255,.07),rgba(255,255,255,.015) 70%);
  border:1px solid rgba(255,255,255,.16);box-shadow:0 8px 30px rgba(0,0,0,.35)}
.js-arrows{position:absolute;inset:0;pointer-events:none;color:rgba(255,255,255,.28);font-size:9px}
.js-arrows span{position:absolute;left:50%;top:50%}
.js-up{transform:translate(-50%,-56px)}.js-dn{transform:translate(-50%,44px)}
.js-lf{transform:translate(-56px,-50%)}.js-rt{transform:translate(45px,-50%)}
.js-knob{position:absolute;left:50%;top:50%;width:52px;height:52px;margin:-26px 0 0 -26px;border-radius:50%;
  background:radial-gradient(circle at 35% 30%,#FFD79A,var(--accent));box-shadow:0 4px 20px rgba(255,179,71,.45);
  pointer-events:none;will-change:transform}
/* 飞行升降按钮 */
.fly-vert{position:absolute;right:max(16px,env(safe-area-inset-right));bottom:max(22px,env(safe-area-inset-bottom));
  display:none;flex-direction:column;gap:10px;z-index:8;touch-action:none}
.fly-vert button{width:56px;height:56px;border-radius:15px;border:1px solid rgba(255,255,255,.18);
  background:rgba(16,18,24,.82);color:var(--accent);font-family:var(--mono);font-size:15px;font-weight:600;
  cursor:pointer;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.fly-vert button:active{background:var(--accent);color:#141414}
html.touch .joystick.on{display:block}
html.touch .fly-vert.on{display:flex}
html.touch .stage-lock{display:none !important}
/* 触屏下提示条移到顶部，避免与左下摇杆重叠 */
html.touch .stage-hint{left:50%;top:12px;bottom:auto;transform:translateX(-50%);text-align:center;max-width:calc(100% - 24px)}
html.touch .viewer-stage{cursor:default}

/* 沉浸式全屏（移动端全屏方案，兼容 iOS Safari） */
.viewer-stage.immersive{position:fixed;inset:0;width:100%;height:100% !important;min-height:0 !important;
  z-index:998;border-radius:0}
body.no-scroll{overflow:hidden}
.stage-exit{position:absolute;top:max(14px,env(safe-area-inset-top));right:max(14px,env(safe-area-inset-right));
  z-index:9;display:none;padding:10px 18px;border-radius:999px;border:1px solid rgba(255,255,255,.2);
  background:rgba(10,11,15,.82);color:#E8EAEE;font-size:13px;font-family:var(--sans);cursor:pointer;
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.viewer-stage.immersive .stage-exit{display:block}

/* ---------- 作品集 ---------- */
.works-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.work-card{position:relative;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);
  overflow:hidden;cursor:pointer;transition:transform .25s, border-color .25s, box-shadow .25s}
.work-card:hover{transform:translateY(-5px);border-color:rgba(255,179,71,.4);box-shadow:0 18px 50px rgba(0,0,0,.5)}
.work-img{aspect-ratio:1;display:grid;place-items:center;background:
  radial-gradient(340px 260px at 50% 62%,rgba(177,226,255,.06),transparent 65%),#0A0B0F}
.work-img img{width:88%;height:88%;object-fit:contain;transition:transform .35s}
.work-card:hover .work-img img{transform:scale(1.045)}
.work-body{padding:18px 20px 22px}
.work-body h3{font-size:16px;font-weight:700}
.work-body p{font-size:12.5px;color:var(--t3);margin-top:7px;line-height:1.65}
.work-meta{margin-top:12px;font-family:var(--mono);font-size:10px;font-weight:600;letter-spacing:1.2px;color:var(--accent)}
.work-size{color:var(--t4);font-weight:500}
.work-open{position:absolute;top:14px;right:14px;width:34px;height:34px;border-radius:9px;display:grid;place-items:center;
  background:rgba(10,11,15,.75);border:1px solid var(--line);color:var(--accent);opacity:0;transition:opacity .25s}
.work-card:hover .work-open{opacity:1}
.work-open svg{width:16px;height:16px}
@media (hover:none){ .work-open{opacity:1} .gal-item::after{opacity:1} .gal-cap{opacity:1;transform:none} }

/* ---------- 音乐 ---------- */
.music-shell{display:grid;grid-template-columns:340px 1fr;gap:24px;align-items:start}
.music-now{position:sticky;top:96px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.music-now>img{width:120px;height:120px;border-radius:50%;margin:0 auto 18px;
  box-shadow:0 0 46px rgba(255,179,71,.18)}
.music-now.spinning>img{animation:spin 9s linear infinite}
.label-sm{font-size:10px;letter-spacing:2px;color:var(--accent)}
.now-title{font-size:17px;font-weight:700;margin-top:8px;min-height:26px}
.now-progress{margin-top:16px;height:4px;border-radius:99px;background:rgba(255,255,255,.08);cursor:pointer;position:relative}
.now-progress::after{content:'';position:absolute;left:0;right:0;top:-12px;bottom:-12px}
.now-progress i{display:block;height:100%;width:0;border-radius:99px;background:var(--accent)}
.now-time{display:flex;justify-content:space-between;font-size:10.5px;color:var(--t3);margin-top:8px}
.track-list{display:flex;flex-direction:column;gap:10px}
.track{display:grid;grid-template-columns:44px 1fr 90px 60px;align-items:center;gap:14px;
  background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:12px 18px;cursor:pointer;transition:all .2s}
.track:hover{border-color:rgba(255,255,255,.22)}
.track.playing{border-color:rgba(255,179,71,.55);background:#12100B}
.track-idx{font-family:var(--mono);font-size:12px;color:var(--t3);text-align:center}
.track.playing .track-idx{color:var(--accent)}
.track-name{font-size:14.5px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.track-dur{font-family:var(--mono);font-size:11.5px;color:var(--t3);text-align:right}
.track-btn{width:34px;height:34px;border-radius:50%;border:1px solid rgba(255,179,71,.5);background:transparent;
  color:var(--accent);display:grid;place-items:center;cursor:pointer;transition:all .2s;padding:0}
.track-btn:hover{background:var(--accent);color:#141414}
.track-btn svg{width:14px;height:14px}
.eq{display:inline-flex;align-items:flex-end;gap:2.5px;height:14px;margin-right:8px;vertical-align:-2px}
.eq i{width:3px;background:var(--accent);animation:eq 0.9s ease-in-out infinite;border-radius:1px}
.eq i:nth-child(2){animation-delay:.25s}.eq i:nth-child(3){animation-delay:.5s}
@keyframes eq{0%,100%{height:4px}50%{height:14px}}

/* ---------- 关于 ---------- */
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.pillar{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:30px 28px;transition:border-color .25s}
.pillar:hover{border-color:rgba(255,179,71,.35)}
.pillar-num{font-size:13px;color:var(--accent);font-weight:600}
.pillar h3{font-size:18px;font-weight:700;margin:12px 0 10px}
.pillar p{font-size:13.5px;color:var(--t2)}
.skill-wall{display:flex;flex-wrap:wrap;gap:12px;margin-top:36px}
.skill{font-size:12px;letter-spacing:1px;color:var(--t2);background:var(--panel2);border:1px solid var(--line);
  padding:9px 16px;border-radius:999px;transition:all .2s}
.skill:hover{color:var(--accent);border-color:rgba(255,179,71,.45)}
.compliance{margin-top:36px;font-size:13px;color:var(--t3);border-left:3px solid var(--accent);
  background:var(--panel);border-radius:0 12px 12px 0;padding:16px 22px}
.compliance b{color:var(--t2)}

/* ---------- 成员 ---------- */
.team-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.member{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:30px}
.member-role{font-size:10.5px;letter-spacing:1.6px;color:var(--accent)}
.member h3{font-size:19px;font-weight:700;margin:12px 0 12px}
.member p{font-size:13.5px;color:var(--t2)}
.member-bili{display:inline-flex;align-items:center;gap:8px;margin-top:18px;padding:7px 14px;border:1px solid rgba(255,255,255,.13);border-radius:999px;font-family:var(--mono);font-size:11.5px;letter-spacing:.3px;color:var(--t2);transition:border-color .2s,color .2s,background .2s,transform .2s}
.member-bili svg{width:14px;height:14px;flex:none}
.member-bili b{font-weight:500;color:var(--t1);transition:color .2s}
.member-bili:hover{border-color:#00AEEC;color:#00AEEC;background:rgba(0,174,236,.09);transform:translateY(-1px)}
.member-bili:hover b{color:#00AEEC}
.bili-strip{margin-top:24px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:26px 30px;display:flex;gap:28px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.bili-head{max-width:580px}
.bili-head p{font-size:13.5px;color:var(--t2);margin-top:10px}
.bili-links{display:flex;gap:12px;flex-wrap:wrap}
.bili-link{display:inline-flex;align-items:center;gap:9px;padding:11px 18px;border:1px solid rgba(255,255,255,.13);border-radius:12px;transition:border-color .2s,background .2s,transform .2s}
.bili-link svg{width:16px;height:16px;flex:none;color:var(--t3);transition:color .2s}
.bili-nick{font-size:14px;color:var(--t1)}
.bili-role{font-size:10.5px;letter-spacing:1.2px;color:var(--accent)}
.bili-link:hover{border-color:#00AEEC;background:rgba(0,174,236,.09);transform:translateY(-2px)}
.bili-link:hover svg{color:#00AEEC}

/* ================================================================
   影像记录
   ================================================================ */
.gal-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;grid-auto-rows:188px}
.gal-item{position:relative;overflow:hidden;border-radius:14px;border:1px solid var(--line);background:var(--panel);cursor:zoom-in;padding:0;font:inherit;color:inherit;text-align:left;-webkit-appearance:none;appearance:none}
.gal-item img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .6s cubic-bezier(.2,.7,.2,1)}
.gal-item:hover img{transform:scale(1.06)}
.gal-item::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 42%,rgba(0,0,0,.78));opacity:0;transition:opacity .3s;z-index:1}
.gal-item:hover::after,.gal-item:focus-visible::after{opacity:1}
.gal-cap{position:absolute;left:16px;right:16px;bottom:14px;z-index:2;opacity:0;transform:translateY(10px);transition:opacity .3s,transform .3s;pointer-events:none}
.gal-item:hover .gal-cap,.gal-item:focus-visible .gal-cap{opacity:1;transform:none}
.gal-cap b{display:block;font-size:14px;color:#fff;font-weight:500}
.gal-cap em{display:block;font-size:10.5px;letter-spacing:1.3px;color:var(--accent);font-family:var(--mono);font-style:normal;margin-bottom:5px}
.gal-item.wide{grid-column:span 2}
.gal-item.tall{grid-row:span 2}

.gal-videos{margin-top:14px;display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:14px}
.gal-video{position:relative;border-radius:14px;overflow:hidden;border:1px solid var(--line);background:#000;cursor:pointer}
.gal-video video{width:100%;display:block;aspect-ratio:16/9;object-fit:cover}
.gv-play{position:absolute;inset:0;display:grid;place-items:center;pointer-events:none;transition:opacity .3s}
.gv-play i{width:58px;height:58px;border-radius:50%;border:1px solid rgba(255,255,255,.3);background:rgba(0,0,0,.42);backdrop-filter:blur(10px);display:grid;place-items:center}
.gv-play svg{width:20px;height:20px;fill:#fff;margin-left:3px}
.gal-video.playing .gv-play{opacity:0}
.gv-meta{position:absolute;left:0;right:0;bottom:0;padding:18px;background:linear-gradient(180deg,transparent,rgba(0,0,0,.82));pointer-events:none}
.gv-meta b{display:block;font-size:14px;color:#fff;font-weight:500;margin-bottom:3px}
.gv-meta em{font-size:11px;color:var(--t2);font-style:normal}

.lightbox{position:fixed;inset:0;z-index:200;background:rgba(4,5,7,.95);backdrop-filter:blur(16px);display:none;flex-direction:column;align-items:center;justify-content:center;gap:20px;padding:6vh 5vw}
.lightbox.open{display:flex}
.lightbox img{max-width:min(1180px,100%);max-height:74vh;border-radius:12px;object-fit:contain;box-shadow:0 40px 90px rgba(0,0,0,.65)}
.lb-cap{text-align:center;max-width:740px}
.lb-cap b{display:block;font-size:17px;color:#fff;font-weight:500;margin-bottom:7px}
.lb-cap span{font-size:13px;color:var(--t2)}
.lb-close{position:absolute;top:22px;right:26px;width:44px;height:44px;border-radius:50%;border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.07);color:#fff;font-size:17px;cursor:pointer;transition:.2s}
.lb-close:hover{background:rgba(255,255,255,.16)}
body.lb-open{overflow:hidden}
.value-strip{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:44px}
.value{border:1px dashed rgba(255,179,71,.4);border-radius:var(--radius);padding:24px 26px}
.value b{display:block;font-size:16px;color:var(--accent);margin-bottom:8px}
.value span{font-size:13px;color:var(--t2)}

/* ---------- 页脚 ---------- */
.footer{margin-top:110px;border-top:1px solid var(--line);background:#060607;
  padding:52px max(24px,env(safe-area-inset-right)) calc(30px + env(safe-area-inset-bottom)) max(24px,env(safe-area-inset-left))}
.footer-top{max-width:1280px;margin:0 auto;display:flex;justify-content:space-between;gap:48px;flex-wrap:wrap}
.footer-brand{display:flex;gap:18px}
.footer-brand img{width:64px;height:64px;border-radius:50%;border:1px solid var(--line);flex:0 0 auto}
.footer-brand strong{font-size:16px}
.footer-brand p{font-size:12.5px;color:var(--t3);margin-top:6px}
.footer-link-line{font-size:10.5px !important;letter-spacing:1px}
.footer-cols{display:flex;gap:72px}
.fcol{display:flex;flex-direction:column;gap:10px}
.fcol b{font-size:13px;margin-bottom:4px}
.fcol a{font-size:12.5px;color:var(--t3);transition:color .2s}
.fcol a:hover{color:var(--accent)}
.footer-bottom{max-width:1280px;margin:40px auto 0;padding-top:22px;border-top:1px solid rgba(255,255,255,.05);
  font-size:10px;letter-spacing:1px;color:var(--t4);line-height:1.8}

/* ================================================================
   响应式：≤1080px 平板 / ≤900px 触屏工具栏 / ≤600px 手机
   ================================================================ */
@media (max-width:1080px){
  :root{--pad-x:32px;--nav-h:68px}
  .hero-inner{flex-direction:column;text-align:center;gap:44px}
  .hero-text{display:flex;flex-direction:column;align-items:center}
  .hero-cta,.hero-stats{justify-content:center}
  .hero-badge{flex:0 0 auto}
  .hero-badge img{width:220px;height:220px}
  .hero-sub{max-width:680px}
  .works-grid{grid-template-columns:repeat(2,1fr)}
  .music-shell{grid-template-columns:1fr}
  .music-now{position:static}
  .pillars,.team-grid,.value-strip{grid-template-columns:1fr}
  .bili-strip{flex-direction:column;align-items:flex-start;gap:20px}
  .gal-grid{grid-template-columns:repeat(3,1fr);grid-auto-rows:170px}
  .nav-links{display:none}
  .nav-toggle{display:flex}
}

/* 触屏：文案切换 + 工具栏改为两行 */
html.touch .hint-desktop{display:none}
html.touch .hint-touch{display:block}

@media (max-width:900px){
  :root{--pad-x:20px;--nav-h:64px}
  .nav{padding:11px 16px}
  .brand-logo{width:38px;height:38px}
  .brand-text strong{font-size:15px}
  .brand-text em{font-size:8px;letter-spacing:1.6px}
  .section{padding:72px var(--pad-x) 16px}
  .hero{padding:118px var(--pad-x) 56px}
  .hero h1{letter-spacing:-.5px}
  .hero-stats{gap:28px 36px}
  .stat b{font-size:25px}
  .footer{margin-top:76px;padding:40px var(--pad-x) calc(24px + env(safe-area-inset-bottom))}
  .footer-top{gap:32px}
  .footer-cols{gap:48px}

  /* 工具栏：第一行模型标签横向滚动，第二行模式下 + 工具 */
  .viewer-shell{border-radius:16px}
  .viewer-toolbar{flex-direction:column;align-items:stretch;gap:10px;padding:12px}
  /* 标签换行铺开：7 个模型全部可见、可点，不再把后几个藏在横向滚动里 */
  .model-tabs{flex-wrap:wrap;gap:7px}
  .tab-btn{flex:0 0 auto;white-space:nowrap;padding:7px 12px;font-size:12.5px}
  .view-controls{width:100%}
  .v-sep{margin-left:auto}
  .tool-btn{width:38px;height:38px}
  .mode-btn{padding:8px 13px}

  /* 画布：竖屏给足高度 */
  .viewer-stage{height:min(66vh,580px);min-height:380px;border-radius:0}
  /* 信息面板改为画布下方常驻块，不再遮挡模型 */
  .stage-info{position:static;width:auto;border:0;border-top:1px solid var(--line);border-radius:0;
    background:var(--panel);padding:16px 18px 20px;backdrop-filter:none;-webkit-backdrop-filter:none}
  .info-name{font-size:16px}
  .info-desc{font-size:13px}
  .stage-hint{font-size:10.5px;padding:8px 12px;bottom:14px}
}
@supports (height:100dvh){
  @media (max-width:900px){ .viewer-stage{height:min(66dvh,580px)} }
}

/* 手机 */
@media (max-width:600px){
  :root{--nav-h:60px}
  .nav{padding:10px 14px;gap:10px}
  .brand{gap:9px}
  .brand-logo{width:34px;height:34px;border-width:1.5px}
  .brand-text strong{font-size:14px}
  .brand-text em{display:none}
  .nav-cta{font-size:12px;padding:8px 14px;border-radius:9px}
  .nav-toggle{width:40px;height:40px}
  .hero{padding:100px 16px 48px}
  .hero h1{font-size:clamp(28px,8.4vw,38px);line-height:1.24}
  .badge{font-size:10px;letter-spacing:1px;padding:6px 11px}
  .hero-sub{font-size:14.5px}
  .hero-cta{gap:10px;margin:24px 0 30px;width:100%}
  .btn{flex:1;min-width:132px;text-align:center;padding:13px 18px;font-size:14px}
  /* 数据条改用 2×2 网格，避免「2024」单独占一行 */
  .hero-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:20px 14px;width:100%;max-width:320px}
  .stat b{font-size:26px}
  .hero-badge img{width:170px;height:170px}
  .badge-caption{margin-top:14px}
  .section{padding:60px 16px 12px}
  .section-head{margin-bottom:32px}
  .section-head p{font-size:14px}
  .viewer-toolbar{padding:10px;border-radius:0}
  /* 模式按钮收成纯图标，避免工具栏过挤 */
  .mode-label{display:none}
  .mode-btn{padding:9px 13px}
  .mode-btn svg{width:17px;height:17px}
  .mode-group{flex:0 0 auto}
  .tool-btn{width:36px;height:36px}
  .viewer-stage{height:min(70dvh,560px);min-height:340px}
  .gal-grid{grid-template-columns:repeat(2,1fr);grid-auto-rows:130px;gap:10px}
  .gal-videos{grid-template-columns:1fr;gap:10px}
  .gal-cap{left:12px;right:12px;bottom:10px}
  .gal-cap b{font-size:12.5px}
  .gal-cap em{font-size:9.5px;letter-spacing:1px}
  .lightbox{padding:5vh 14px;gap:14px}
  .lb-close{top:14px;right:14px;width:38px;height:38px}
  .lb-cap b{font-size:15px}
  .works-grid{grid-template-columns:1fr;gap:18px}
  .work-body{padding:15px 16px 18px}
  .pillar,.member{padding:22px 20px}
  .compliance{padding:14px 16px}
  .skill-wall{gap:9px}
  .skill{font-size:11px;padding:8px 13px}
  /* 音乐：单列紧凑 */
  .music-now{padding:20px}
  .music-now>img{width:96px;height:96px;margin-bottom:14px}
  .track{grid-template-columns:28px minmax(0,1fr) 44px 40px;gap:10px;padding:11px 13px}
  .track-name{font-size:13.5px}
  .track-zhu{display:none}
  .track-btn{width:38px;height:38px}
  .track-btn svg{width:15px;height:15px}
  .footer-brand img{width:52px;height:52px}
  .footer-cols{gap:40px;width:100%}
  .footer-bottom{font-size:9px;letter-spacing:.4px}
  .joystick{width:112px;height:112px;bottom:max(16px,env(safe-area-inset-bottom))}
  .js-knob{width:46px;height:46px;margin:-23px 0 0 -23px}
  .js-up{transform:translate(-50%,-50px)}.js-dn{transform:translate(-50%,38px)}
  .js-lf{transform:translate(-50px,-50%)}.js-rt{transform:translate(39px,-50%)}
  .fly-vert button{width:50px;height:50px;border-radius:14px}
  .stage-exit{padding:9px 15px;font-size:12px}
}

/* 横屏手机：画布尽量占满纵向空间 */
@media (orientation:landscape) and (max-height:560px){
  .viewer-stage{height:min(84vh,520px);min-height:280px}
  .stage-info{position:static}
  .hero{padding-top:88px}
  .joystick{width:110px;height:110px;bottom:12px}
  .fly-vert{bottom:12px}
  .fly-vert button{width:46px;height:46px}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
  html{scroll-behavior:auto}
}