:root{
  --sky:#9ee8ff;--sea:#42c7f4;--grass:#7bdc7b;--sand:#ffe3a3;--card:rgba(255,255,255,.94);
  --text:#24445f;--muted:#66839a;--orange:#ff9f43;--orange2:#ff7f11;--purple:#7d5fff;
  --green:#2ecc71;--red:#ff5d73;--blue:#2d98da;--radius:28px;--shadow:0 18px 45px rgba(28,76,119,.18)
}
*{box-sizing:border-box}body{margin:0;min-height:100vh;font-family:"Trebuchet MS","PingFang SC","Microsoft YaHei",sans-serif;color:var(--text);background:linear-gradient(180deg,var(--sky),#d9faff 48%,var(--sea));overflow-x:hidden}.sky,.sea{position:fixed;inset:0;pointer-events:none;z-index:0}.sky:before{content:"☁️  ☁️";position:absolute;top:70px;left:6%;font-size:54px;opacity:.82;filter:drop-shadow(0 8px 10px rgba(255,255,255,.4))}.sky:after{content:"🌈";position:absolute;top:86px;right:9%;font-size:82px}.sea{top:60%;background:radial-gradient(circle at 20% 30%,rgba(255,255,255,.35),transparent 12%),linear-gradient(180deg,rgba(255,255,255,0),rgba(17,138,202,.45));z-index:0}.topbar{position:sticky;top:0;z-index:3;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:16px 6vw;background:rgba(255,255,255,.38);backdrop-filter:blur(12px);border-bottom:2px solid rgba(255,255,255,.45)}.brand{font-weight:1000;font-size:25px;text-decoration:none;color:#124e78;text-shadow:0 2px 0 #fff}.nav{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.nav a,.link-button{border:2px solid rgba(255,255,255,.8);background:rgba(255,255,255,.82);color:#124e78;text-decoration:none;padding:9px 14px;border-radius:999px;font-weight:900;cursor:pointer;box-shadow:0 6px 16px rgba(28,76,119,.10)}.inline-form{display:inline}.container{position:relative;z-index:1;width:min(1140px,92vw);margin:28px auto 70px}.card,.hero-card{background:var(--card);border:3px solid rgba(255,255,255,.86);border-radius:var(--radius);box-shadow:var(--shadow);padding:30px;margin:24px 0;backdrop-filter:blur(8px)}.hero-card{position:relative;overflow:hidden}.hero-card:after{content:"🏝️";position:absolute;right:26px;bottom:-18px;font-size:120px;opacity:.18}.dashboard-hero:after{content:"⭐"}.mascot{float:right;font-size:58px;background:#fff4c7;border:4px solid #fff;border-radius:28px;padding:12px;box-shadow:0 12px 20px rgba(0,0,0,.12)}.eyebrow{text-transform:uppercase;letter-spacing:.14em;color:#2388bd;font-weight:1000}.lead{font-size:19px;line-height:1.8;color:#355d7a;max-width:850px}h1{font-size:clamp(31px,4.4vw,54px);line-height:1.08;margin:8px 0 13px}h2{margin-top:0;font-size:28px}.button{display:inline-block;border:0;text-decoration:none;padding:13px 20px;border-radius:999px;color:#fff;font-weight:1000;box-shadow:0 10px 20px rgba(0,0,0,.16);cursor:pointer;background:linear-gradient(135deg,var(--purple),#5f6cff)}.button.primary,.primary{background:linear-gradient(135deg,var(--orange),var(--orange2))}.actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:18px}.stack-form{display:grid;gap:16px;max-width:560px}.grid-form{max-width:none;grid-template-columns:repeat(2,minmax(220px,1fr));align-items:end}.wide{grid-column:1/-1;justify-self:start}label{font-weight:900;color:#31546f}input,select{width:100%;margin-top:7px;border:3px solid #d8f1ff;border-radius:18px;padding:13px 15px;font-size:16px;color:var(--text);background:#fff}input:focus,select:focus{outline:none;border-color:#7dcbff;box-shadow:0 0 0 5px rgba(45,152,218,.12)}.message{padding:13px 16px;border-radius:18px;font-weight:900;margin:15px 0}.message.error{background:#ffe5eb;color:#b5273f}.message.correct{background:#ddffe9;color:#13783a}.hint,.muted{color:var(--muted)}.empty{padding:25px;border-radius:22px;background:#f1fbff;color:#557}.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(130px,1fr));gap:16px;margin:20px 0}.stats-grid div{background:linear-gradient(180deg,#fff,#eefaff);border:3px solid #fff;border-radius:24px;padding:18px;text-align:center;box-shadow:0 8px 18px rgba(45,152,218,.12)}.stats-grid strong{display:block;font-size:36px;color:#ff7f11}.stats-grid span{font-weight:900;color:#53718a}.word-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px}.word-card{background:linear-gradient(180deg,#fff,#fff8df);border:3px solid #fff;border-radius:24px;padding:18px;box-shadow:0 10px 22px rgba(28,76,119,.12);position:relative;overflow:hidden}.word-card:before{content:"✨";position:absolute;right:12px;top:10px;opacity:.45}.word-card h3{font-size:26px;margin:10px 0 6px;color:#124e78}.meaning{font-size:20px;font-weight:1000;color:#e07916}.badge{display:inline-block;background:#e8f7ff;color:#2176a6;border-radius:999px;padding:6px 10px;font-size:12px;font-weight:1000}.child-card{background:linear-gradient(180deg,#fff,#eef8ff)}.table-wrap{overflow:auto;border-radius:18px;border:2px solid #e6f6ff}table{width:100%;border-collapse:collapse;background:#fff}th,td{padding:11px 12px;border-bottom:1px solid #eaf3f8;text-align:left;white-space:nowrap}th{background:#e8f7ff;color:#17628d}.form-card{max-width:760px;margin-left:auto;margin-right:auto}.map-card{background:linear-gradient(180deg,rgba(255,255,255,.96),rgba(255,251,224,.94))}@media(max-width:760px){.topbar{align-items:flex-start;flex-direction:column}.grid-form,.stats-grid{grid-template-columns:1fr}.hero-card{padding:22px}.mascot{float:none;display:inline-block}.container{width:94vw}}