:root {
    --bg: #0b1020;
    --panel: #11182b;
    --panel-2: #151e34;
    --line: #26314d;
    --text: #f4f7ff;
    --muted: #94a3bf;
    --accent: #7c9cff;
    --accent-2: #9ab0ff;
    --success: #45d49a;
    --danger: #ff6b7a;
    --shadow: 0 16px 50px rgba(0,0,0,.25);
}
* { box-sizing: border-box; }
html { color-scheme: dark; }
body {
    margin: 0;
    min-height: 100vh;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background:
        radial-gradient(circle at 20% 0%, rgba(81,112,255,.14), transparent 34rem),
        var(--bg);
    color: var(--text);
}
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
.topbar {
    position: sticky; top: 0; z-index: 20;
    min-height: 76px;
    display: flex; align-items: center; justify-content: space-between; gap: 24px;
    padding: 12px max(22px, calc((100vw - 1240px)/2));
    border-bottom: 1px solid rgba(255,255,255,.07);
    background: rgba(11,16,32,.88);
    backdrop-filter: blur(18px);
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand strong { display: block; font-size: 17px; letter-spacing: .2px; }
.brand small { display: block; margin-top: 2px; color: var(--muted); font-size: 12px; }
.logo {
    width: 42px; height: 42px; border-radius: 13px;
    display: grid; place-items: center;
    font-weight: 900; letter-spacing: -1px;
    color: #08101f; background: linear-gradient(135deg, #b7c5ff, #6d91ff);
    box-shadow: 0 7px 22px rgba(109,145,255,.3);
}
.nav-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.user-chip { color: var(--muted); font-size: 13px; padding: 0 7px; }
.inline-form { display: inline; margin: 0; }
.container { width: min(1240px, calc(100% - 44px)); margin: 0 auto; padding: 42px 0 80px; }
.page-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 24px; }
h1 { font-size: clamp(28px, 4vw, 42px); line-height: 1.08; margin: 7px 0 8px; letter-spacing: -1.3px; }
h2 { margin: 0; font-size: 18px; }
p { line-height: 1.65; }
.eyebrow { color: var(--accent-2); font-size: 11px; font-weight: 800; letter-spacing: 1.4px; }
.muted, .hint { color: var(--muted); }
.hint { font-size: 13px; line-height: 1.6; margin: 5px 0 10px; }
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    min-height: 40px; border-radius: 11px; padding: 8px 14px;
    border: 1px solid transparent; cursor: pointer; font-weight: 700; font-size: 13px;
    transition: .16s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn.primary { color: #091025; background: #91a9ff; border-color: #91a9ff; }
.btn.ghost { color: #dce5ff; background: rgba(255,255,255,.035); border-color: var(--line); }
.btn.danger { color: #ffadb5; }
.btn.wide { width: 100%; }
.flash { border: 1px solid var(--line); background: var(--panel-2); padding: 13px 15px; border-radius: 12px; margin-bottom: 18px; font-size: 14px; }
.flash.success { border-color: rgba(69,212,154,.35); background: rgba(69,212,154,.08); }
.flash.error { border-color: rgba(255,107,122,.4); background: rgba(255,107,122,.08); }
.flash details { margin-top: 8px; }
.flash ul { margin-bottom: 0; }
.panel {
    background: linear-gradient(180deg, rgba(21,30,52,.92), rgba(17,24,43,.94));
    border: 1px solid var(--line); border-radius: 18px; padding: 22px;
    box-shadow: var(--shadow);
}
.panel + .panel { margin-top: 18px; }
.panel-title { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 14px; }
.pill { display: inline-flex; align-items: center; padding: 5px 9px; border-radius: 999px; border: 1px solid var(--line); color: var(--muted); font-size: 11px; font-weight: 700; }
.subscription-list { display: grid; gap: 14px; }
.subscription-board {
    display: grid; grid-template-columns: minmax(0, 1fr) minmax(380px, 49%); gap: 24px; align-items: center;
    padding: 23px 24px;
    border: 1px solid var(--line); border-radius: 18px;
    background: linear-gradient(100deg, rgba(17,24,43,.98), rgba(18,28,52,.96));
    box-shadow: var(--shadow);
}
.sub-main { min-width: 0; display: flex; align-items: flex-start; gap: 14px; }
.status-dot { width: 10px; height: 10px; margin-top: 7px; border-radius: 50%; background: var(--success); box-shadow: 0 0 0 6px rgba(69,212,154,.08); flex: 0 0 auto; }
.sub-title-row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.sub-title-row h2 { font-size: 20px; }
.sub-desc { margin: 6px 0 8px; font-size: 14px; }
.meta-row { display: flex; gap: 16px; flex-wrap: wrap; color: #73829e; font-size: 11px; }
.sub-link-area { display: flex; align-items: center; gap: 8px; min-width: 0; }
.sub-url, .copy-line code, .key-box {
    display: block; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
    color: #bcd0ff; background: rgba(4,9,20,.65); border: 1px solid #202b45; border-radius: 10px; padding: 10px 12px;
    font: 12px/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.sub-url { flex: 1; }
.empty-state { border: 1px dashed var(--line); border-radius: 18px; text-align: center; padding: 70px 24px; background: rgba(255,255,255,.018); }
.empty-icon { width: 52px; height: 52px; margin: 0 auto 16px; border-radius: 17px; display: grid; place-items: center; background: var(--panel-2); color: var(--accent); font-size: 26px; }
.auth-shell { min-height: calc(100vh - 190px); display: grid; place-items: center; }
.auth-card { width: min(470px, 100%); padding: 32px; border-radius: 22px; background: var(--panel); border: 1px solid var(--line); box-shadow: var(--shadow); }
.stack-form { display: grid; gap: 15px; }
label { color: #c8d3ea; font-size: 13px; font-weight: 700; }
input, textarea, select {
    width: 100%; margin-top: 7px; border: 1px solid var(--line); border-radius: 11px; padding: 11px 12px;
    color: var(--text); background: #0b1222; outline: none;
}
input:focus, textarea:focus, select:focus { border-color: #5c7fe3; box-shadow: 0 0 0 3px rgba(92,127,227,.12); }
textarea { resize: vertical; }
.code-area { font: 12px/1.65 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.section-divider { height: 1px; background: var(--line); margin: 25px 0; }
.link-panel { display: grid; grid-template-columns: minmax(260px, .7fr) 1fr; align-items: center; gap: 28px; margin-bottom: 18px; }
.link-panel h2 { margin-top: 7px; font-size: 20px; }
.link-panel p { margin-bottom: 0; }
.copy-line { display: flex; gap: 8px; min-width: 0; }
.copy-line code { flex: 1; }
.editor-layout { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: 18px; align-items: start; }
.editor-side { display: grid; gap: 18px; }
.editor-side .panel { margin: 0; }
.check-list { display: grid; gap: 8px; }
.check-item { display: flex; align-items: center; gap: 10px; padding: 9px 10px; border: 1px solid var(--line); border-radius: 11px; background: rgba(255,255,255,.018); cursor: pointer; }
.check-item input { width: 17px; height: 17px; margin: 0; accent-color: #89a3ff; }
.check-item span { min-width: 0; }
.check-item strong, .check-item small { display: block; }
.check-item small { margin-top: 2px; color: var(--muted); font-weight: 500; }
.warning-check { margin-top: 12px; border-color: rgba(255,190,90,.23); }
.key-box { white-space: normal; word-break: break-all; }
.sticky-actions { position: sticky; top: 94px; display: grid; gap: 9px; }
.grid-form { display: grid; gap: 14px; align-items: end; }
.user-create-grid { grid-template-columns: 1fr 1fr 1.2fr .8fr auto; }
.form-action { padding-bottom: 1px; }
.user-list { display: grid; gap: 9px; }
.user-row { display: grid; grid-template-columns: 1.15fr 1fr .7fr 1.2fr auto; gap: 12px; align-items: end; padding: 12px; border: 1px solid var(--line); border-radius: 13px; background: rgba(255,255,255,.018); }
.user-row label > span { display: block; font-size: 11px; color: var(--muted); }
.user-row input, .user-row select { margin-top: 5px; padding: 9px 10px; }
.user-identity { align-self: center; }
.user-identity strong, .user-identity small { display: block; }
.user-identity small { color: var(--muted); margin-top: 4px; font-size: 11px; }
@media (max-width: 980px) {
    .subscription-board { grid-template-columns: 1fr; }
    .sub-link-area { flex-wrap: wrap; }
    .sub-url { flex-basis: 100%; }
    .editor-layout { grid-template-columns: 1fr; }
    .sticky-actions { position: static; }
    .link-panel { grid-template-columns: 1fr; }
    .user-create-grid, .user-row { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 700px) {
    .topbar { align-items: flex-start; padding: 12px 16px; }
    .brand small, .user-chip { display: none; }
    .nav-actions .btn { padding: 7px 9px; min-height: 36px; }
    .container { width: min(100% - 28px, 1240px); padding-top: 28px; }
    .page-heading { align-items: flex-start; }
    .subscription-board { padding: 18px; }
    .sub-link-area .btn { flex: 1; }
    .copy-line { flex-wrap: wrap; }
    .copy-line code { flex-basis: 100%; }
    .user-create-grid, .user-row { grid-template-columns: 1fr; }
    .form-action .btn, .user-row > .btn { width: 100%; }
}