:root {
  --bg: #f7f7f5;
  --card: #ffffff;
  --ink: #1d1d1b;
  --muted: #76766f;
  --line: #e6e5e0;
  --accent: #1f6feb;
  --accent-ink: #ffffff;
  --ok: #1a9a5b;
  --warn: #c98a00;
  --bad: #d1453b;
  --code-bg: #fff6d6;
  --radius: 14px;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131312;
    --card: #1c1c1a;
    --ink: #ecebe6;
    --muted: #9a9990;
    --line: #2d2d2a;
    --accent: #4c8dff;
    --code-bg: #3a3215;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}
button, input, select { font: inherit; color: inherit; }
button { cursor: pointer; }
[hidden] { display: none !important; }

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 760px; margin: 0 auto; padding: 18px 20px;
}
.brand { display: flex; align-items: center; gap: 8px; color: var(--ink); text-decoration: none; font-weight: 600; }

.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px 40px; }

.hero { text-align: center; padding: 28px 0 22px; }
.hero h1 { font-size: 34px; margin: 0 0 6px; letter-spacing: -0.5px; }
.hero .sub { margin: 0 0 26px; color: var(--muted); }

.composer {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px; box-shadow: 0 1px 2px rgba(0,0,0,.03);
}
.addr-row {
  display: flex; align-items: center; gap: 6px;
  border: 1px solid var(--line); border-radius: 10px; padding: 6px 6px 6px 12px;
  background: var(--bg);
}
.addr-row:focus-within { border-color: var(--accent); }
.addr-row input, .addr-row select {
  border: 0; background: transparent; outline: none; font-family: var(--mono); font-size: 16px; /* ≥16px 防 iOS 缩放 */
  min-width: 0;
}
.addr-row .name { flex: 1 1 40%; padding: 6px 0; }
.addr-row .subdomain { width: 7em; padding: 6px 0; text-align: right; }
.addr-row .domain { flex: 0 1 auto; max-width: 45%; padding: 6px 4px; cursor: pointer; }
.addr-row .at, .addr-row .dot, .rand-sub { color: var(--muted); font-family: var(--mono); }
.rand-sub { font-size: 14px; border: 1px dashed var(--line); border-radius: 6px; padding: 1px 6px; }
.sub-wrap { display: flex; align-items: center; }

.opts {
  display: flex; flex-wrap: wrap; gap: 14px; align-items: center;
  margin: 12px 2px 14px; font-size: 14px; color: var(--muted);
}
.opts label { display: flex; align-items: center; gap: 4px; cursor: pointer; }
.opts label.disabled { opacity: .45; cursor: not-allowed; }
.opt-label { color: var(--ink); }
.preview { margin: -4px 2px 12px; font-size: 13px; color: var(--muted); text-align: left; word-break: break-all; }
.preview code { font-family: var(--mono); color: var(--ink); font-size: 14px; }
.preview code i { font-style: normal; color: var(--accent); }

.primary {
  width: 100%; border: 0; border-radius: 10px; padding: 12px;
  background: var(--accent); color: var(--accent-ink); font-weight: 600; font-size: 16px;
}
.primary:disabled { opacity: .6; cursor: progress; }
.ghost {
  border: 1px solid var(--line); background: var(--card); border-radius: 8px; padding: 6px 12px; font-size: 14px;
}
.ghost:hover { border-color: var(--muted); }
.icon {
  border: 0; background: transparent; width: 32px; height: 32px; border-radius: 8px; font-size: 18px; color: var(--muted);
}
.icon:hover { background: var(--line); color: var(--ink); }
.pill {
  display: inline-block; min-width: 20px; padding: 0 6px; border-radius: 10px;
  background: var(--line); font-size: 12px; text-align: center; line-height: 20px;
}
.err { color: var(--bad); margin: 10px 0 0; font-size: 14px; text-align: left; }
.muted { color: var(--muted); }

.current {
  margin-top: 18px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 18px;
}
.cur-head { display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: var(--muted); }
.cur-addr { display: flex; align-items: center; gap: 10px; margin-top: 6px; }
.cur-addr code { flex: 1; font-family: var(--mono); font-size: 19px; word-break: break-all; }
.status { display: flex; align-items: center; gap: 6px; }
.status i { width: 8px; height: 8px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 0 var(--ok); animation: ping 2s infinite; }
.status b { font-weight: 500; }
.status.paused i { background: var(--muted); animation: none; }
.status.error i { background: var(--bad); animation: none; }
@keyframes ping {
  0% { box-shadow: 0 0 0 0 rgba(26,154,91,.5); }
  70% { box-shadow: 0 0 0 7px rgba(26,154,91,0); }
  100% { box-shadow: 0 0 0 0 rgba(26,154,91,0); }
}

.inbox { margin-top: 18px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.inbox-head { display: flex; justify-content: space-between; align-items: center; padding: 12px 18px; border-bottom: 1px solid var(--line); }
.inbox-head h2 { margin: 0; font-size: 16px; display: flex; gap: 8px; align-items: center; }
.mail-list { list-style: none; margin: 0; padding: 0; }
.mail-list li {
  display: grid; grid-template-columns: 1fr auto; gap: 2px 12px;
  padding: 12px 18px; border-bottom: 1px solid var(--line); cursor: pointer;
}
.mail-list li:last-child { border-bottom: 0; }
.mail-list li:hover { background: var(--bg); }
.mail-list li.fresh { animation: fresh 2.4s ease-out; }
@keyframes fresh { from { background: var(--code-bg); } to { background: transparent; } }
.mail-list .from { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mail-list .time { color: var(--muted); font-size: 13px; }
.mail-list .subj { grid-column: 1 / -1; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 14px; }
.code-chip {
  font-family: var(--mono); background: var(--code-bg); border-radius: 6px; padding: 0 6px; margin-left: 6px;
  font-weight: 600; color: var(--ink); cursor: copy; font-size: 13px;
}

.empty { text-align: center; padding: 44px 20px; color: var(--muted); }
.empty p { margin: 14px 0 2px; color: var(--ink); font-weight: 500; }
.pulse { width: 14px; height: 14px; margin: 0 auto; border-radius: 50%; background: var(--accent); opacity: .7; animation: breathe 1.6s ease-in-out infinite; }
@keyframes breathe { 50% { transform: scale(1.6); opacity: .25; } }

.overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.38); display: flex; align-items: flex-start; justify-content: center;
  padding: 5vh 14px; z-index: 20; overflow-y: auto;
}
.sheet {
  width: 100%; max-width: 820px; background: var(--card); border-radius: var(--radius); padding: 18px;
  box-shadow: 0 20px 60px rgba(0,0,0,.25);
}
.sheet.narrow { max-width: 460px; }
.sheet-head { display: flex; justify-content: space-between; gap: 12px; }
.sheet-head h3 { margin: 0 0 6px; font-size: 18px; word-break: break-word; }
.sheet-head p { margin: 0; font-size: 14px; word-break: break-all; }
.sheet-head .k { color: var(--muted); margin-right: 4px; }
.code-bar {
  margin: 14px 0 0; padding: 10px 14px; border-radius: 10px; background: var(--code-bg);
  display: flex; align-items: center; justify-content: space-between; gap: 10px; word-break: break-all;
}
.code-bar strong { flex: 1; font-family: var(--mono); font-size: 22px; letter-spacing: 2px; }
.code-bar a { flex: 1; }
.code-bar a { color: var(--accent); }
.tabs { display: flex; gap: 6px; margin: 14px 0 8px; }
.tabs button { border: 1px solid var(--line); background: transparent; border-radius: 7px; padding: 3px 12px; font-size: 13px; }
.tabs button.on { background: var(--ink); color: var(--card); border-color: var(--ink); }
#mvHtml { display: block; width: 100%; height: 50vh; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
#mvText {
  white-space: pre-wrap; word-break: break-word; font-family: var(--mono); font-size: 13px;
  max-height: 62vh; overflow: auto; margin: 0; padding: 12px; border: 1px solid var(--line); border-radius: 10px;
}
.atts { list-style: none; padding: 0; margin: 12px 0 0; display: flex; flex-wrap: wrap; gap: 8px; font-size: 13px; }
.atts li { border: 1px solid var(--line); border-radius: 8px; padding: 4px 10px; color: var(--muted); }

.box-list { list-style: none; padding: 0; margin: 14px 0 0; }
.box-list li { display: flex; align-items: center; gap: 8px; padding: 10px 0; border-top: 1px solid var(--line); }
.box-list code { flex: 1; font-family: var(--mono); font-size: 14px; word-break: break-all; cursor: pointer; }
.box-list li.on code { color: var(--accent); font-weight: 600; }
.box-list .empty-tip { color: var(--muted); justify-content: center; }
.full { width: 100%; margin: 14px 0; padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); font-size: 16px; }

.toast {
  position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%);
  background: var(--ink); color: var(--card); padding: 8px 16px; border-radius: 999px; font-size: 14px; z-index: 30;
}
.foot { text-align: center; color: var(--muted); font-size: 13px; padding: 10px 20px 30px; }

@media (max-width: 560px) {
  .hero h1 { font-size: 27px; }
  /* 第一行: 用户名 + 随机按钮; 第二行: @ [二级.] 主域名 */
  .addr-row { flex-wrap: wrap; row-gap: 2px; padding: 8px 10px; }
  .addr-row .name { flex: 1 1 calc(100% - 40px); }
  .addr-row .at { margin-left: 2px; }
  .addr-row .subdomain { width: 5.5em; text-align: left; }
  .addr-row .domain { max-width: none; flex: 1 1 0; text-align: left; padding-left: 0; }
  .cur-addr code { font-size: 16px; }
  .mail-list li { padding: 12px 14px; }
}
.atts a { color: inherit; text-decoration: none; }
.atts a:hover { color: var(--accent); }

/* ---- 账号 ---- */
.top-actions { display: flex; align-items: center; gap: 8px; }
#authArea, .user-chip { display: inline-flex; align-items: center; gap: 8px; }
/* 用户名: 放在最左边, 头像 + 普通字重灰字, 不和按钮抢视觉 */
.uname { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; color: var(--muted); margin-right: 4px; max-width: 12em; }
.uname[hidden] { display: none; }
button.uname { border: 0; background: transparent; padding: 2px 4px 2px 2px; border-radius: 999px; cursor: pointer; }
button.uname:hover { background: var(--line); color: var(--ink); }
.acct-info { display: grid; grid-template-columns: max-content 1fr; gap: 8px 16px; margin: 16px 0 6px; font-size: 14px; }
.acct-info dt { color: var(--muted); }
.acct-info dd { margin: 0; word-break: break-all; }
.acct-sub { margin: 18px 0 0; font-size: 15px; }
#accountForm .full { margin: 10px 0 0; }
#accountForm .primary { margin-top: 12px; }
#accountForm .muted { margin: 8px 2px 0; }
.uname-text { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.avatar {
  flex: none; width: 26px; height: 26px; border-radius: 50%; display: inline-grid; place-items: center;
  background: var(--accent); color: #fff; font-style: normal; font-size: 13px; font-weight: 600;
}
a.ghost { color: var(--ink); text-decoration: none; display: inline-block; }
.auth-tabs { margin: 0; }
.auth-tabs button { font-size: 15px; padding: 5px 16px; }
.small { font-size: 13px; }
#authForm .full { margin: 12px 0 0; }
#authForm .primary { margin-top: 12px; }
#authHint { margin: 10px 2px 0; }

/* ---- 域名面板 ---- */
.expand {
  flex: none; border: 1px solid var(--line); background: var(--card); color: var(--ink);
  border-radius: 8px; padding: 5px 10px; font-size: 13px; white-space: nowrap;
}
.expand:hover { border-color: var(--muted); }
.expand[aria-expanded="true"] { border-color: var(--accent); color: var(--accent); }
.domain-panel {
  margin-top: 10px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg);
  text-align: left; overflow: hidden;
}
.dp-head { display: flex; align-items: center; gap: 10px; padding: 10px; border-bottom: 1px solid var(--line); }
.dp-head input {
  flex: 1; min-width: 0; border: 1px solid var(--line); border-radius: 8px; padding: 7px 10px;
  background: var(--card); font-size: 16px; outline: none;
}
.dp-head input:focus { border-color: var(--accent); }
.dp-body { max-height: 320px; overflow-y: auto; padding: 6px 10px 10px; }
.dp-group { font-size: 12px; color: var(--muted); margin: 8px 2px 6px; }
.dp-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 8px; }
.dp-item {
  display: flex; flex-direction: column; gap: 3px; align-items: flex-start; text-align: left;
  border: 1px solid var(--line); background: var(--card); border-radius: 9px; padding: 8px 10px;
}
.dp-item:hover { border-color: var(--muted); }
.dp-item.on { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; }
.dp-item .dn { font-family: var(--mono); font-size: 14px; font-weight: 600; word-break: break-all; }
.dp-item .meta { display: flex; flex-wrap: wrap; gap: 4px; font-size: 12px; color: var(--muted); }
.tag { border-radius: 5px; padding: 0 6px; font-size: 11px; line-height: 18px; background: var(--line); color: var(--muted); }
.tag.vip { background: rgba(201,138,0,.16); color: var(--warn); }
.dp-empty { color: var(--muted); text-align: center; padding: 18px 0; font-size: 14px; }

@media (max-width: 560px) {
  .uname-text { display: none; }
  #myBoxesBtn .label-long { display: none; }
  .dp-grid { grid-template-columns: 1fr 1fr; }
}

/* 弹窗打开时锁住背后的页面滚动 */
body:has(.overlay:not([hidden])) { overflow: hidden; }
.mail-list li:focus-visible, .box-list code:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }
@media (max-width: 560px) {
  .hide-sm { display: none; }
  .topbar { padding: 14px 14px; gap: 8px; }
  .top-actions { gap: 6px; }
  .top-actions .ghost { padding: 5px 9px; }
}
.topbar .ghost, .brand span, .user-chip .uname { white-space: nowrap; }
@media (max-width: 400px) {
  .brand span { display: none; }
  .top-actions .ghost { padding: 5px 8px; font-size: 13px; }
}

/* ---- SEO 正文 ---- */
.seo-content { margin-top: 36px; color: var(--ink); line-height: 1.8; font-size: 15px; }
.seo-content h1 { font-size: 26px; margin: 0 0 14px; }
.seo-content h2 { font-size: 19px; margin: 30px 0 10px; }
.seo-content p { margin: 8px 0; color: var(--ink); }
.seo-content ul, .seo-content ol { padding-left: 1.3em; margin: 8px 0; }
.seo-content li { margin: 6px 0; }
.seo-content strong { font-weight: 600; }
.seo-content a { color: var(--accent); }
.seo-content.page { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 24px; margin-top: 10px; }
.faq details { border: 1px solid var(--line); border-radius: 10px; background: var(--card); margin: 8px 0; padding: 0 14px; }
.faq summary { cursor: pointer; padding: 11px 0; font-weight: 600; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; float: right; color: var(--muted); font-weight: 400; }
.faq details[open] summary::after { content: "−"; }
.faq details p { margin: 0 0 12px; color: var(--muted); }
.crumbs { font-size: 13px; color: var(--muted); margin: 6px 2px 0; }
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--accent); }
.nf-links { display: flex; flex-wrap: wrap; gap: 8px 16px; padding: 0; list-style: none; }

.site-foot { max-width: 760px; margin: 30px auto 0; padding: 18px 20px 6px; border-top: 1px solid var(--line); text-align: center; }
.foot-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 18px; font-size: 14px; margin-bottom: 8px; }
.foot-links a { color: var(--ink); text-decoration: none; }
.foot-links a:hover { color: var(--accent); }
.muted-links a { color: var(--muted); font-size: 13px; }
.site-foot .foot { padding: 6px 0 24px; }

/* ---- 语言 ---- */
.show-sm { display: none; }
.lang-menu { position: relative; }
.lang-menu > summary { list-style: none; cursor: pointer; border: 1px solid var(--line); background: var(--card); border-radius: 8px; padding: 6px 10px; font-size: 14px; display: inline-flex; gap: 4px; align-items: center; white-space: nowrap; }
.lang-menu > summary::-webkit-details-marker { display: none; }
.lang-list {
  position: absolute; right: 0; top: calc(100% + 6px); z-index: 15; width: max-content; max-width: min(560px, 92vw);
  background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 8px; box-shadow: 0 10px 30px rgba(0,0,0,.14);
  display: grid; grid-template-columns: repeat(3, minmax(150px, 1fr)); gap: 2px;
}
.lang-list a { display: flex; align-items: center; gap: 8px; padding: 7px 10px; border-radius: 7px; color: var(--ink); text-decoration: none; font-size: 14px; white-space: nowrap; }
.lang-list a:hover { background: var(--bg); }
.lang-list a.on { color: var(--accent); font-weight: 600; }
.lang-links { font-size: 13px; gap: 4px 12px; }
.lang-links a { color: var(--muted); }
.lang-links span { color: var(--ink); font-weight: 600; }
.lang-banner {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 8px 12px;
  background: var(--code-bg); padding: 8px 14px; font-size: 14px; text-align: center;
}
.lang-banner .primary.inline.sm { width: auto; padding: 5px 14px; font-size: 14px; border-radius: 8px; text-decoration: none; display: inline-block; }
.ghost.sm { padding: 4px 10px; font-size: 13px; }
/* 锁定域名提示 */
.locked-note { margin: 10px 2px 0; font-size: 13px; color: var(--muted); text-align: left; }
.locked-note a, .locked-note button.linklike { color: var(--accent); background: none; border: 0; padding: 0; font: inherit; cursor: pointer; text-decoration: underline; }
.dp-locked { margin: 10px 2px 2px; font-size: 13px; color: var(--muted); display: flex; flex-wrap: wrap; gap: 6px 14px; }
.dp-locked span::before { content: "🔒 "; }
.tag.vipt { background: linear-gradient(90deg, #f5d28a, #f0b44c); color: #5a3d00; }
.tag.mem { background: rgba(31,111,235,.12); color: var(--accent); }
@media (max-width: 560px) {
  .show-sm { display: inline; }
  .lang-menu > summary { padding: 5px 8px; }
}
.locked-note div > span { display: block; margin: 2px 0; }
.locked-note div > span::before { content: "🔒 "; }

/* ---- 国旗 ---- */
.flag { display: inline-block; flex: none; border-radius: 2px; box-shadow: 0 0 0 1px rgba(0,0,0,.08); object-fit: cover; vertical-align: -2px; }
.lang-menu > summary .flag { width: 20px; height: 15px; }
.lang-menu .caret { font-size: 11px; color: var(--muted); margin-left: 2px; }
.lang-links a, .lang-links span { display: inline-flex; align-items: center; gap: 5px; }
@media (max-width: 560px) {
  /* 手机上语言菜单改成固定在顶栏下方的整宽面板, 不跟着按钮位置走, 不会超出屏幕 */
  .lang-list { position: fixed; top: 58px; left: 10px; right: 10px; width: auto; max-width: none; max-height: 70vh; overflow-y: auto; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .lang-list a { white-space: normal; }
}

/* ---- 从右往左 (阿拉伯语) ---- */
[dir="rtl"] .lang-list { right: auto; left: 0; }
[dir="rtl"] .seo-content ul, [dir="rtl"] .seo-content ol { padding-left: 0; padding-right: 1.3em; }
[dir="rtl"] .faq summary::after { float: left; }
[dir="rtl"] .preview, [dir="rtl"] .err, [dir="rtl"] .locked-note, [dir="rtl"] .domain-panel { text-align: right; }
[dir="rtl"] .dp-item { text-align: right; align-items: flex-start; }
/* 邮箱地址本身永远从左往右 */
[dir="rtl"] .addr-row, [dir="rtl"] #curAddr, [dir="rtl"] .preview code, [dir="rtl"] .box-list code, [dir="rtl"] .dp-item .dn, [dir="rtl"] .code-chip { direction: ltr; unicode-bidi: isolate; }
[dir="rtl"] .addr-row { flex-direction: row; }
@media (max-width: 560px) {
  [dir="rtl"] .lang-list { left: 10px; right: 10px; }
}