/* =========================================================
   儿童科学实验站 · 蒸汽波风格
   梦幻 / 复古未来 / 紫粉渐变 / 网格地平线 / 发光字
   ========================================================= */
:root{
  --c-primary:#eb7f47;
  --c-accent:#3abed9;
  --c-highlight:#4f86f8;
  --c-bg:#15110e;
  --c-card:#231d1a;
  --c-text:#f2efee;
  --c-muted:#aea098;
  --c-border:#403630;
  /* 蒸汽波紫粉装饰渐变 */
  --c-pink:#f472b6;
  --c-purple:#8b5cf6;
  --grad-main:linear-gradient(115deg,#eb7f47 0%,#f472b6 38%,#8b5cf6 72%,#3abed9 100%);
  --grad-cool:linear-gradient(115deg,#3abed9 0%,#4f86f8 55%,#8b5cf6 100%);
  --grad-warm:linear-gradient(115deg,#eb7f47 0%,#f472b6 100%);
  --radius:6px;
  --font-title:'Poppins','Noto Sans SC',system-ui,sans-serif;
  --font-mono:'JetBrains Mono','Fira Code',ui-monospace,'SFMono-Regular','Courier New',monospace;
  --glow-pink:0 0 24px rgba(244,114,182,.35);
  --glow-blue:0 0 24px rgba(79,134,248,.35);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-mono);
  font-size:15px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
/* 复古 CRT 扫描线 */
body::before{
  content:"";position:fixed;inset:0;z-index:9999;pointer-events:none;
  background:repeating-linear-gradient(to bottom,rgba(255,255,255,.025) 0 1px,transparent 1px 3px);
  mix-blend-mode:overlay;
}
::selection{background:var(--c-pink);color:#15110e}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;color:var(--c-text)}

.container{width:min(1120px,92%);margin:0 auto;position:relative;z-index:2}

/* ---------------- 通用 --------------- */
.kicker{
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:3px;text-transform:uppercase;
  color:var(--c-accent);
  margin-bottom:10px;
  text-shadow:0 0 12px rgba(58,190,217,.6);
}
.grad-text{
  background:var(--grad-main);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
  filter:drop-shadow(0 0 18px rgba(244,114,182,.35));
}
.section{padding:84px 0;position:relative}
.section-alt{background:linear-gradient(180deg,rgba(139,92,246,.07),transparent 40%)}
.section-title{
  font-family:var(--font-title);
  font-size:clamp(28px,4.5vw,42px);
  font-weight:800;letter-spacing:.5px;
  line-height:1.15;margin-bottom:12px;
}
.section-sub{color:var(--c-muted);max-width:560px}
.section-head{margin-bottom:36px}
.section-head .section-title::after{
  content:"";display:block;width:64px;height:4px;border-radius:2px;
  background:var(--grad-main);margin-top:14px;
  box-shadow:var(--glow-pink);
}

.center{text-align:center}
.mt{margin-top:32px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 24px;border-radius:var(--radius);
  font-family:var(--font-title);font-weight:600;font-size:15px;
  border:1px solid transparent;transition:.25s var(--ease);
  position:relative;
}
.btn-primary{
  background:var(--grad-warm);color:#1a120a;
  box-shadow:0 6px 24px rgba(235,127,71,.35);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 32px rgba(244,114,182,.5)}
.btn-ghost{border-color:var(--c-border);color:var(--c-text);background:transparent}
.btn-ghost:hover{border-color:var(--c-accent);color:var(--c-accent);box-shadow:var(--glow-blue)}
.btn-outline{border-color:var(--c-primary);color:var(--c-primary)}
.btn-outline:hover{background:rgba(235,127,71,.12);box-shadow:0 0 20px rgba(235,127,71,.3)}
.btn:disabled{opacity:.5;cursor:not-allowed}

.link-glow{color:var(--c-primary);font-weight:600}
.link-glow:hover{text-shadow:0 0 14px rgba(235,127,71,.8)}

/* ---------------- 顶栏 --------------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(21,17,14,.82);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--c-border);
}
.nav-inner{width:min(1120px,92%);margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{
  display:flex;align-items:center;gap:10px;
  font-family:var(--font-title);font-weight:800;font-size:18px;
  letter-spacing:.5px;
}
.logo-mark{
  width:34px;height:34px;border-radius:var(--radius);
  display:grid;place-items:center;font-size:18px;
  background:var(--grad-cool);box-shadow:var(--glow-blue);
}
.nav-links{display:flex;gap:6px}
.nav-links a{
  padding:8px 16px;border-radius:var(--radius);
  color:var(--c-muted);font-size:14px;font-weight:500;
  transition:.2s;
}
.nav-links a:hover{color:var(--c-text);background:rgba(58,190,217,.1)}
.nav-links a.active{
  color:var(--c-bg);background:var(--grad-main);
  font-weight:700;box-shadow:0 4px 16px rgba(244,114,182,.35);
}
.nav-toggle{display:none;background:none;border:1px solid var(--c-border);color:var(--c-text);font-size:20px;padding:6px 12px;border-radius:var(--radius)}

/* ---------------- Hero --------------- */
.hero{
  position:relative;min-height:88vh;display:flex;align-items:center;
  padding:120px 0 160px;overflow:hidden;
  background:
    radial-gradient(60% 55% at 78% 12%,rgba(139,92,246,.28),transparent 62%),
    radial-gradient(45% 45% at 15% 20%,rgba(244,114,182,.16),transparent 60%),
    var(--c-bg);
}
.hero-inner{max-width:640px}
.hero-title{
  font-family:var(--font-title);
  font-size:clamp(42px,8vw,78px);
  font-weight:800;line-height:1.05;letter-spacing:1px;
  text-shadow:0 0 40px rgba(244,114,182,.4),0 0 80px rgba(139,92,246,.35);
}
.hero-sub{margin:22px 0 34px;font-size:clamp(14px,2vw,17px);color:var(--c-muted);max-width:520px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:flex;gap:36px;margin-top:52px;flex-wrap:wrap}
.stat b{
  font-family:var(--font-title);font-size:34px;font-weight:800;
  display:block;line-height:1;
  background:var(--grad-cool);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.stat span{font-size:12px;color:var(--c-muted);letter-spacing:1px}

/* 蒸汽波太阳 */
.sun{
  position:absolute;left:50%;bottom:150px;transform:translateX(-50%);
  width:230px;height:230px;border-radius:50%;opacity:.9;
  background:linear-gradient(var(--c-primary),#f472b6 55%,#8b5cf6 90%);
  -webkit-mask:repeating-linear-gradient(to top,transparent 0 12px,#000 12px 22px);
  mask:repeating-linear-gradient(to top,transparent 0 12px,#000 12px 22px);
  filter:saturate(1.15);
  box-shadow:0 0 60px rgba(244,114,182,.55),0 0 140px rgba(139,92,246,.45);
  z-index:1;
}
/* 网格地平线 */
.grid-horizon{
  position:absolute;left:-10%;right:-10%;bottom:-2px;height:200px;z-index:1;
  background:
    repeating-linear-gradient(to right,rgba(58,190,217,.5) 0 1px,transparent 1px 40px),
    repeating-linear-gradient(to top,rgba(58,190,217,.5) 0 1px,transparent 1px 40px);
  transform:perspective(420px) rotateX(58deg);
  transform-origin:top center;
  -webkit-mask:linear-gradient(to top,transparent,#000 42%,#000);
  mask:linear-gradient(to top,transparent,#000 42%,#000);
  opacity:.8;
}
.grid-horizon::before{
  content:"";position:absolute;left:0;right:0;top:-60px;height:60px;
  background:linear-gradient(to top,var(--c-bg),transparent);
  -webkit-mask:none;mask:none;
}

/* ---------------- 材料分类 --------------- */
.material-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.material-card{
  display:flex;align-items:center;gap:14px;
  background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--radius);padding:18px;
  transition:.25s var(--ease);
}
.material-card:hover{transform:translateY(-4px);border-color:var(--c-accent);box-shadow:var(--glow-blue)}
.material-icon{
  width:46px;height:46px;border-radius:var(--radius);display:grid;place-items:center;
  font-size:22px;background:rgba(139,92,246,.16);border:1px solid var(--c-border);
}
.material-name{font-family:var(--font-title);font-weight:700;font-size:16px}
.material-count{font-size:11px;color:var(--c-muted)}
.material-card.active{background:linear-gradient(115deg,rgba(235,127,71,.2),rgba(139,92,246,.2));border-color:var(--c-primary)}

/* ---------------- 实验卡片 --------------- */
.exp-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.exp-card{
  background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--radius);overflow:hidden;
  transition:.3s var(--ease);display:flex;flex-direction:column;
}
.exp-card:hover{transform:translateY(-6px);border-color:var(--c-primary);box-shadow:0 14px 40px rgba(0,0,0,.5),0 0 24px rgba(235,127,71,.2)}
.exp-cover{
  position:relative;height:150px;display:grid;place-items:center;
  overflow:hidden;
}
.exp-cover::after{
  content:"";position:absolute;inset:0;
  background:
    repeating-linear-gradient(to right,rgba(255,255,255,.06) 0 1px,transparent 1px 26px),
    repeating-linear-gradient(to top,rgba(255,255,255,.06) 0 1px,transparent 1px 26px);
  transform:perspective(260px) rotateX(45deg);transform-origin:center;opacity:.35;
}
.exp-emoji{font-size:54px;filter:drop-shadow(0 6px 14px rgba(0,0,0,.45));z-index:2}
.exp-tag{
  position:absolute;top:10px;right:10px;z-index:3;
  font-size:11px;padding:4px 8px;border-radius:4px;
  background:rgba(21,17,14,.7);border:1px solid rgba(255,255,255,.2);
  color:var(--c-text);backdrop-filter:blur(4px);
}
.exp-body{padding:18px;display:flex;flex-direction:column;gap:8px;flex:1}
.exp-body h3{font-family:var(--font-title);font-weight:700;font-size:18px;line-height:1.3}
.exp-body p{font-size:12.5px;color:var(--c-muted);flex:1}
.exp-meta{display:flex;justify-content:space-between;align-items:center;margin-top:6px}
.exp-meta .diff{color:var(--c-primary);font-size:12px;letter-spacing:2px}
.exp-arrow{color:var(--c-accent);font-size:18px;transition:.25s}
.exp-card:hover .exp-arrow{transform:translateX(6px)}

/* ---------------- 三步流程 --------------- */
.how-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.how-card{
  background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--radius);padding:30px 24px;position:relative;overflow:hidden;
}
.how-card::before{
  content:"";position:absolute;inset:auto -30% -60% -30%;height:120%;
  background:radial-gradient(closest-side,rgba(139,92,246,.22),transparent);
  pointer-events:none;
}
.how-num{
  font-family:var(--font-title);font-size:13px;letter-spacing:3px;
  color:var(--c-primary);text-shadow:0 0 12px rgba(235,127,71,.6);
}
.how-ico{font-size:44px;margin:12px 0;display:block;filter:drop-shadow(0 0 12px rgba(244,114,182,.4))}
.how-card h3{font-family:var(--font-title);font-weight:700;font-size:19px;margin-bottom:8px}
.how-card p{font-size:13px;color:var(--c-muted)}

/* ---------------- CTA 打卡横幅 --------------- */
.cta-banner{
  position:relative;padding:70px 0;overflow:hidden;
  background:
    radial-gradient(55% 90% at 85% 50%,rgba(139,92,246,.3),transparent 60%),
    radial-gradient(45% 90% at 10% 50%,rgba(244,114,182,.2),transparent 60%),
    var(--c-card);
  border-top:1px solid var(--c-border);border-bottom:1px solid var(--c-border);
}
.cta-inner{display:grid;grid-template-columns:1.3fr .7fr;gap:40px;align-items:center}
.cta-title{font-family:var(--font-title);font-size:clamp(24px,4vw,36px);font-weight:800;margin:6px 0 14px}
.cta-inner p{color:var(--c-muted);max-width:520px;margin-bottom:26px}
.medal-preview{
  display:grid;place-items:center;filter:drop-shadow(0 0 30px rgba(244,114,182,.35));
}
.medal-preview canvas{width:220px;height:220px;border-radius:50%;animation:float 5s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}

/* ---------------- 安全区块 --------------- */
.safety-teaser{
  display:flex;gap:22px;align-items:flex-start;
  background:linear-gradient(115deg,rgba(58,190,217,.1),rgba(139,92,246,.12));
  border:1px solid var(--c-border);border-radius:var(--radius);
  padding:30px;
}
.safety-icon{
  width:64px;height:64px;flex:none;border-radius:var(--radius);
  display:grid;place-items:center;font-size:30px;
  background:var(--grad-cool);box-shadow:var(--glow-blue);
}
.safety-teaser h3{font-family:var(--font-title);font-weight:700;font-size:20px;margin-bottom:6px}
.safety-teaser p{color:var(--c-muted);font-size:13.5px;margin-bottom:10px}

/* ---------------- 页脚 --------------- */
.site-footer{
  border-top:1px solid var(--c-border);padding:46px 0 34px;
  background:linear-gradient(180deg,transparent,rgba(139,92,246,.06));
}
.footer-inner{width:min(1120px,92%);margin:0 auto;display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}
.footer-brand .logo{margin-bottom:10px}
.footer-brand p{color:var(--c-muted);font-size:12.5px;max-width:340px}
.footer-links{display:flex;gap:44px;flex-wrap:wrap}
.footer-col h4{font-family:var(--font-title);font-size:13px;letter-spacing:2px;color:var(--c-accent);margin-bottom:12px}
.footer-col a{display:block;color:var(--c-muted);font-size:13px;padding:4px 0;transition:.2s}
.footer-col a:hover{color:var(--c-primary)}
.footer-bottom{
  width:min(1120px,92%);margin:34px auto 0;padding-top:22px;
  border-top:1px dashed var(--c-border);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  color:var(--c-muted);font-size:12px;
}

/* ---------------- 实验库页 --------------- */
.page-hero{padding:70px 0 40px;position:relative;overflow:hidden;background:
  radial-gradient(50% 70% at 80% 0,rgba(139,92,246,.22),transparent 60%),
  radial-gradient(40% 60% at 10% 20%,rgba(244,114,182,.14),transparent 60%);}
.page-hero h1{font-family:var(--font-title);font-size:clamp(30px,5vw,46px);font-weight:800}
.page-hero p{color:var(--c-muted);margin-top:10px;max-width:620px}
.breadcrumb{font-size:12px;color:var(--c-muted);letter-spacing:1px;margin-bottom:14px}
.breadcrumb a{color:var(--c-accent)}

.toolbar{position:sticky;top:64px;z-index:50;background:rgba(21,17,14,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--c-border);padding:16px 0}
.toolbar-inner{width:min(1120px,92%);margin:0 auto;display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.search-box{flex:1;min-width:220px;position:relative}
.search-box input{
  width:100%;background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--radius);padding:12px 16px 12px 44px;font-size:14px;outline:none;
  transition:.2s;
}
.search-box input:focus{border-color:var(--c-accent);box-shadow:var(--glow-blue)}
.search-box .s-ico{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--c-muted)}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{
  padding:8px 14px;border-radius:var(--radius);font-size:13px;
  background:var(--c-card);border:1px solid var(--c-border);color:var(--c-muted);
  transition:.2s;
}
.chip:hover{border-color:var(--c-accent);color:var(--c-accent)}
.chip.active{background:var(--grad-main);color:#1a120a;font-weight:700;border-color:transparent;box-shadow:0 4px 16px rgba(244,114,182,.3)}
.result-note{font-size:12.5px;color:var(--c-muted);margin:26px 0 18px}
.result-note b{color:var(--c-accent)}
.empty{
  text-align:center;padding:70px 20px;color:var(--c-muted);
  border:1px dashed var(--c-border);border-radius:var(--radius);
}
.empty .e-ico{font-size:54px;display:block;margin-bottom:14px;opacity:.6}

/* ---------------- 详情页 --------------- */
.detail-hero{padding:60px 0 20px}
.detail-meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}
.meta-chip{
  font-size:12.5px;padding:6px 12px;border-radius:4px;
  background:rgba(139,92,246,.14);border:1px solid var(--c-border);color:var(--c-text);
}
.meta-chip.dur{border-color:rgba(235,127,71,.5);color:var(--c-primary)}
.meta-chip.diff{border-color:rgba(244,114,182,.5);color:var(--c-pink)}
.meta-chip.cat{border-color:rgba(58,190,217,.5);color:var(--c-accent)}
.meta-chip b{letter-spacing:2px}

.video-frame{
  position:relative;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--c-border);box-shadow:0 20px 60px rgba(0,0,0,.5);
  margin:34px 0;
}
.video-frame video{width:100%;display:block;aspect-ratio:16/9;background:#000}
.video-badge{
  position:absolute;top:14px;left:14px;z-index:3;
  font-size:12px;letter-spacing:2px;padding:6px 12px;border-radius:4px;
  background:rgba(21,17,14,.72);border:1px solid rgba(244,114,182,.5);
  color:var(--c-pink);text-shadow:0 0 10px rgba(244,114,182,.7);backdrop-filter:blur(4px);
}
.video-note{font-size:12px;color:var(--c-muted);margin-top:10px;text-align:center}

.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:8px}
.panel{
  background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--radius);padding:26px;
}
.panel h3{font-family:var(--font-title);font-weight:700;font-size:19px;margin-bottom:18px;display:flex;align-items:center;gap:10px}
.panel h3 .p-ico{color:var(--c-accent);filter:drop-shadow(0 0 8px rgba(58,190,217,.6))}
/* 材料清单 */
.mat-list{list-style:none}
.mat-list li{border-bottom:1px dashed var(--c-border);padding:11px 0}
.mat-list li:last-child{border-bottom:none}
.mat-list label{display:flex;align-items:center;gap:12px;cursor:pointer;font-size:14px}
.mat-list .qty{color:var(--c-muted);font-size:12px;margin-left:auto}
.mat-list input{appearance:none;width:20px;height:20px;flex:none;border:1px solid var(--c-accent);border-radius:4px;cursor:pointer;position:relative;transition:.2s}
.mat-list input:checked{background:var(--c-accent)}
.mat-list input:checked::after{content:"✓";position:absolute;inset:0;display:grid;place-items:center;color:#15110e;font-size:13px;font-weight:700}
.mat-list input:checked + span{color:var(--c-muted);text-decoration:line-through}
.ready-bar{height:6px;background:var(--c-border);border-radius:3px;overflow:hidden;margin-top:14px}
.ready-bar i{display:block;height:100%;width:0;background:var(--grad-warm);transition:.4s var(--ease);border-radius:3px;box-shadow:0 0 10px rgba(235,127,71,.6)}
.ready-text{font-size:12px;color:var(--c-muted);margin-top:8px}

/* 安全提示 */
.safety-note{
  display:flex;gap:14px;align-items:flex-start;
  background:linear-gradient(115deg,rgba(235,127,71,.14),rgba(244,114,182,.12));
  border:1px solid rgba(235,127,71,.4);border-radius:var(--radius);padding:18px;
}
.safety-note .sn-ico{font-size:26px}
.safety-note h4{font-family:var(--font-title);font-size:15px;color:var(--c-primary);margin-bottom:4px}
.safety-note p{font-size:12.5px;color:var(--c-muted)}

/* 步骤 */
.steps{list-style:none;display:grid;gap:16px}
.step{
  display:flex;gap:20px;align-items:flex-start;
  background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--radius);padding:22px;position:relative;
}
.step-num{
  flex:none;width:46px;height:46px;border-radius:var(--radius);
  display:grid;place-items:center;
  font-family:var(--font-title);font-weight:800;font-size:15px;color:#15110e;
  background:var(--grad-cool);box-shadow:var(--glow-blue);
}
.step h4{font-family:var(--font-title);font-weight:700;font-size:17px;margin-bottom:4px}
.step p{font-size:13.5px;color:var(--c-muted)}

/* 原理 */
.principle-box{
  background:linear-gradient(120deg,rgba(139,92,246,.16),rgba(58,190,217,.12) 60%,rgba(235,127,71,.1));
  border:1px solid rgba(139,92,246,.5);border-radius:var(--radius);
  padding:30px;position:relative;overflow:hidden;
}
.principle-box::before{
  content:"🔬";position:absolute;right:22px;top:16px;font-size:44px;opacity:.22;
}
.principle-box h3{font-family:var(--font-title);font-weight:700;font-size:20px;margin-bottom:12px}
.principle-box p{font-size:14px;color:var(--c-muted);line-height:1.9}

/* ---------------- 打卡页 --------------- */
.checkin-wrap{display:grid;grid-template-columns:1.2fr .8fr;gap:26px;padding:50px 0 80px}
.form-panel .field{margin-bottom:18px}
.form-panel label{display:block;font-family:var(--font-title);font-size:13px;color:var(--c-muted);letter-spacing:1px;margin-bottom:8px}
.form-panel select,.form-panel input[type=text]{
  width:100%;background:var(--c-bg);border:1px solid var(--c-border);
  border-radius:var(--radius);padding:12px 14px;font-size:14px;outline:none;transition:.2s;
}
.form-panel select:focus,.form-panel input[type=text]:focus{border-color:var(--c-accent);box-shadow:var(--glow-blue)}
.upload-zone{
  border:2px dashed var(--c-border);border-radius:var(--radius);
  padding:34px;text-align:center;cursor:pointer;transition:.25s;
  background:var(--c-bg);position:relative;
}
.upload-zone:hover,.upload-zone.drag{border-color:var(--c-pink);background:rgba(244,114,182,.06)}
.upload-zone .up-ico{font-size:40px;display:block;margin-bottom:10px;filter:drop-shadow(0 0 10px rgba(244,114,182,.5))}
.upload-zone p{font-size:13px;color:var(--c-muted)}
.upload-zone input[type=file]{position:absolute;inset:0;opacity:0;cursor:pointer}
.upload-preview{margin-top:14px;display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.upload-preview img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:4px;border:1px solid var(--c-accent)}
.upload-preview .ph-add{
  aspect-ratio:1;display:grid;place-items:center;font-size:26px;color:var(--c-muted);
  border:1px dashed var(--c-border);border-radius:4px;cursor:pointer;transition:.2s;
}
.upload-preview .ph-add:hover{border-color:var(--c-accent);color:var(--c-accent)}
#previewMedal-static{display:none}

.medal-side{position:sticky;top:120px;align-self:start}
.medal-stage{
  text-align:center;padding:34px;border-radius:var(--radius);
  background:var(--c-card);border:1px solid var(--c-border);
  background-image:radial-gradient(closest-side at 50% 30%,rgba(139,92,246,.2),transparent);
}
.medal-stage canvas{width:250px;height:250px;margin:0 auto;display:block;filter:drop-shadow(0 0 26px rgba(244,114,182,.45));animation:float 5s ease-in-out infinite}
.medal-side h3{font-family:var(--font-title);font-weight:800;font-size:22px;margin:16px 0 4px;text-shadow:0 0 18px rgba(244,114,182,.5)}
.medal-side p{color:var(--c-muted);font-size:12.5px}
.count-badge{margin-top:18px;display:inline-block;padding:8px 16px;border-radius:4px;font-size:13px;background:rgba(58,190,217,.12);border:1px solid rgba(58,190,217,.4);color:var(--c-accent)}

/* 打卡记录 */
.records{margin-top:60px}
.records h2{font-family:var(--font-title);font-weight:800;font-size:24px;margin-bottom:20px;display:flex;align-items:center;gap:10px}
.record-list{display:grid;gap:12px}
.record{
  display:flex;align-items:center;gap:16px;
  background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--radius);padding:14px 18px;
}
.record .r-img{width:52px;height:52px;border-radius:4px;object-fit:cover;border:1px solid var(--c-border)}
.record .r-name{font-family:var(--font-title);font-weight:600}
.record .r-meta{font-size:12px;color:var(--c-muted)}
.record .r-star{margin-left:auto;font-size:20px;filter:drop-shadow(0 0 8px rgba(235,127,71,.6))}

/* 成功弹层 */
.modal-mask{
  position:fixed;inset:0;background:rgba(21,17,14,.85);backdrop-filter:blur(6px);
  display:none;place-items:center;z-index:1000;padding:20px;
}
.modal-mask.show{display:grid}
.modal-card{
  background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--radius);padding:34px;max-width:430px;width:100%;
  text-align:center;box-shadow:0 30px 80px rgba(0,0,0,.6),0 0 40px rgba(244,114,182,.2);
}
.modal-card canvas{width:200px;height:200px;margin:0 auto 18px;display:block;filter:drop-shadow(0 0 24px rgba(244,114,182,.5))}
.modal-card h3{font-family:var(--font-title);font-weight:800;font-size:22px;margin-bottom:6px}
.modal-card p{color:var(--c-muted);font-size:13px;margin-bottom:22px}
.modal-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* 彩带 */
.confetti{position:fixed;top:-20px;font-size:22px;z-index:1001;pointer-events:none;animation:fall linear forwards}
@keyframes fall{to{transform:translateY(110vh) rotate(360deg);opacity:.2}}

/* ---------------- 安全页 --------------- */
.alert-banner{
  display:flex;gap:16px;align-items:center;
  background:linear-gradient(115deg,rgba(235,127,71,.2),rgba(244,114,182,.16));
  border:1px solid rgba(235,127,71,.55);border-radius:var(--radius);
  padding:22px 26px;margin:36px 0;
  box-shadow:0 0 24px rgba(235,127,71,.15);
}
.alert-banner .ab-ico{font-size:34px;flex:none}
.alert-banner h3{font-family:var(--font-title);font-weight:800;font-size:19px;color:var(--c-primary);margin-bottom:4px}
.alert-banner p{font-size:13px;color:var(--c-muted)}

.safety-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:26px 0}
.safety-card{
  background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--radius);
  padding:24px;transition:.25s var(--ease);
}
.safety-card:hover{transform:translateY(-4px);border-color:var(--c-pink);box-shadow:var(--glow-pink)}
.safety-card .sc-ico{font-size:34px;display:block;margin-bottom:12px;filter:drop-shadow(0 0 10px rgba(244,114,182,.4))}
.safety-card h3{font-family:var(--font-title);font-weight:700;font-size:17px;margin-bottom:8px}
.safety-card p{font-size:12.5px;color:var(--c-muted)}

.accordion{margin:12px 0}
.acc-item{border:1px solid var(--c-border);border-radius:var(--radius);margin-bottom:10px;background:var(--c-card);overflow:hidden}
.acc-head{
  width:100%;display:flex;align-items:center;gap:14px;
  background:none;border:none;color:var(--c-text);
  padding:18px 20px;text-align:left;font-family:var(--font-title);font-weight:600;font-size:16px;
  transition:.2s;
}
.acc-head:hover{background:rgba(139,92,246,.08)}
.acc-head .acc-arrow{margin-left:auto;color:var(--c-accent);transition:.3s}
.acc-item.open .acc-arrow{transform:rotate(180deg)}
.acc-body{max-height:0;overflow:hidden;transition:max-height .4s var(--ease)}
.acc-body-inner{padding:0 20px 20px;color:var(--c-muted);font-size:13.5px;border-top:1px dashed var(--c-border);padding-top:14px;margin:0 20px 18px 20px;padding-left:0;padding-right:0}
.acc-body-inner ul{padding-left:20px;margin-top:8px}
.acc-body-inner li{margin:6px 0}

.checklist-panel{background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--radius);padding:26px;margin:26px 0}
.checklist-panel h3{font-family:var(--font-title);font-weight:700;font-size:19px;margin-bottom:16px;display:flex;align-items:center;gap:10px}
.checklist-panel .mat-list label{font-size:14px}

.two-col{display:grid;grid-template-columns:1fr 1fr;gap:22px}

/* ---------------- 动画 --------------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}
.d1{transition-delay:.08s}.d2{transition-delay:.16s}.d3{transition-delay:.24s}

@keyframes pulse{0%,100%{opacity:1}50%{opacity:.55}}

/* ---------------- 响应式 --------------- */
@media (max-width:960px){
  .material-grid{grid-template-columns:repeat(2,1fr)}
  .exp-grid{grid-template-columns:repeat(2,1fr)}
  .how-grid{grid-template-columns:1fr}
  .cta-inner{grid-template-columns:1fr}
  .detail-grid{grid-template-columns:1fr}
  .checkin-wrap{grid-template-columns:1fr}
  .medal-side{position:static}
  .safety-grid{grid-template-columns:repeat(2,1fr)}
  .two-col{grid-template-columns:1fr}
}
@media (max-width:640px){
  .section{padding:60px 0}
  .nav-links{
    position:fixed;top:64px;left:0;right:0;z-index:99;
    flex-direction:column;background:rgba(21,17,14,.98);border-bottom:1px solid var(--c-border);
    padding:14px;display:none;
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:13px 16px}
  .nav-toggle{display:block}
  .exp-grid{grid-template-columns:1fr}
  .material-grid{grid-template-columns:1fr}
  .hero{padding:80px 0 140px}
  .hero-stats{gap:22px}
  .hero-cta .btn{width:100%;justify-content:center}
  .safety-grid{grid-template-columns:1fr}
  .safety-teaser{flex-direction:column}
  .sun{width:160px;height:160px}
  .footer-inner{flex-direction:column}
}