*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;min-height:100vh;background:#020504;color:#dff5e8;font-family:"DM Sans",system-ui,sans-serif;line-height:1.55}
a{color:#3bff96;text-decoration:none}
.dc-top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px;border-bottom:1px solid rgba(0,255,136,.16);background:rgba(2,8,5,.92);position:sticky;top:0;z-index:10}
.dc-logo{font-weight:800;font-size:1.2rem;color:#fff}.dc-logo span{color:#00ff88;text-shadow:0 0 14px rgba(0,255,136,.4)}
.dc-nav{display:flex;gap:14px;flex-wrap:wrap;font-size:.9rem}
.dc-wrap{width:100%;max-width:1000px;margin:0 auto;padding:24px 16px 60px}
.dc-card{background:rgba(4,14,9,.9);border:1px solid rgba(0,255,136,.16);border-radius:16px;padding:22px;box-shadow:0 12px 34px rgba(0,0,0,.45)}
.dc-narrow{max-width:440px;margin:6vh auto 0}
h1,h2{margin:0 0 14px;color:#fff}h1{font-size:1.6rem}
label{display:block;margin:12px 0 5px;font-size:.85rem;color:#9fe9c4}
input,textarea,select{width:100%;padding:12px 14px;border-radius:10px;border:1px solid #14402a;background:#04100a;color:#eafff4;font:inherit;font-size:16px}
input:focus,textarea:focus,select:focus{outline:2px solid rgba(0,255,136,.5);border-color:transparent}
.dc-btn{display:inline-flex;justify-content:center;align-items:center;gap:8px;padding:12px 18px;border:0;border-radius:10px;font:inherit;font-weight:700;cursor:pointer;background:linear-gradient(135deg,#00ff88,#00c46a);color:#021208;box-shadow:0 0 18px rgba(0,255,136,.3)}
.dc-btn:disabled{opacity:.5;cursor:not-allowed}.dc-btn--ghost{background:transparent;color:#3bff96;border:1px solid rgba(0,255,136,.3);box-shadow:none}.dc-btn--block{width:100%;margin-top:16px}
.dc-msg{margin-top:12px;font-size:.9rem;min-height:1.2em}.dc-msg.err{color:#ff7b7b}.dc-msg.ok{color:#3bff96}
.dc-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px}
.dc-muted{color:#7fa793;font-size:.85rem}
table{width:100%;border-collapse:collapse;font-size:.88rem}th,td{padding:8px;border-bottom:1px solid #12301f;text-align:left}
.dc-tablewrap{overflow-x:auto}
/* Chat */
body.dc-chat{display:flex;flex-direction:column;height:100dvh;min-height:0}
.dc-chatlog{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px}
.dc-bubble{max-width:min(760px,92%);padding:12px 14px;border-radius:14px;white-space:pre-wrap;word-wrap:break-word;overflow-wrap:anywhere}
.dc-bubble.u{align-self:flex-end;background:#0a3d24;border:1px solid rgba(0,255,136,.3)}
.dc-bubble.a{align-self:flex-start;background:#06100b;border:1px solid #14402a}
.dc-bubble pre{overflow-x:auto;background:#000;padding:10px;border-radius:8px}
.dc-compose{display:flex;gap:8px;padding:10px 12px calc(10px + env(safe-area-inset-bottom));border-top:1px solid rgba(0,255,136,.16);background:#020805;align-items:flex-end;flex-wrap:wrap}
.dc-compose textarea{flex:1 1 200px;min-height:46px;max-height:160px;resize:none}
.dc-bar{display:flex;gap:8px;align-items:center;flex-wrap:wrap;font-size:.8rem}
.dc-bar select{width:auto;padding:6px 10px;font-size:14px}
@media(max-width:600px){.dc-wrap{padding:16px 12px 40px}.dc-nav{font-size:.82rem;gap:10px}}
.dc-bubble{position:relative;padding-left:56px;min-height:52px}
.dc-bubble::before{content:"";position:absolute;left:12px;top:12px;width:32px;height:32px;border-radius:10px;background:center/cover no-repeat}
.dc-bubble.a::before{background-image:url(../images/avatar-ai.svg)}
.dc-bubble.u::before{background-image:url(../images/avatar-user.svg)}
details.dc-faq{border:1px solid rgba(0,255,136,.16);border-radius:12px;padding:14px 16px;margin-top:10px;background:rgba(4,14,9,.9)}
details.dc-faq summary{cursor:pointer;font-weight:600;color:#eafff4;list-style:none}
details.dc-faq summary::after{content:"+";float:right;color:#00ff88}
details.dc-faq[open] summary::after{content:"–"}
details.dc-faq p{margin:10px 0 0;color:#a9c9b8}
.dc-plan-card{display:flex;flex-direction:column}