/* 长叙岛 · 账号类页面「素」样式：登录 / 注册 / 账号 / 充值 / 注销 / 后台 共用
   令牌与聊天页（atelier.css）一致。规则体里不写裸颜色，唯一例外是桌面端框外底色。 */
:root {
  --a-bg: #EDE9E2; --a-ink: #181613; --a-t2: #6C665C;
  --a-hair: rgba(24, 22, 19, .20); --a-hair2: rgba(24, 22, 19, .28);
  --a-rust: #8A4B34; --a-sheet: #FAF8F4; --a-band: #E3DDD2;
  --a-serif: "Noto Serif SC", "Songti SC", "STSong", serif;
  --a-sans: -apple-system, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  /* 旧变量别名：operations.css 还在用 */
  --ink: var(--a-ink); --muted: var(--a-t2); --brand: var(--a-ink); --line: var(--a-hair); --wash: var(--a-bg);
  color-scheme: light;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; min-height: 100vh; background: var(--a-bg); color: var(--a-ink); font: 400 14px/1.7 var(--a-sans); -webkit-font-smoothing: antialiased; }
[hidden] { display: none !important; }

.account-shell { width: min(100%, 430px); min-height: 100vh; margin: 0 auto; padding: 0 0 40px; background: var(--a-bg); }
.brand { display: flex; align-items: center; height: 56px; padding: 0 22px; border-bottom: 1px solid var(--a-hair); color: var(--a-ink); text-decoration: none; font: 400 15px/1 var(--a-serif); letter-spacing: .4em; }
.brand-mark { display: none; }
.account-card { margin: 26px 22px 0; padding: 28px 24px 30px; background: var(--a-sheet); border: 1px solid var(--a-hair); border-radius: 0; box-shadow: none; }
.eyebrow { margin: 0 0 20px; color: var(--a-t2); font: 400 11px/1 var(--a-sans); letter-spacing: .34em; }
h1 { margin: 0; font: 500 30px/1.3 var(--a-serif); letter-spacing: .08em; }
h2 { margin: 30px 0 10px; padding-top: 18px; border-top: 1px solid var(--a-hair); font: 500 17px/1.4 var(--a-serif); letter-spacing: .1em; }
.description { margin: 12px 0 26px; color: var(--a-t2); font-size: 13px; line-height: 1.85; letter-spacing: .04em; }

/* 登录 / 注册 切换：与聊天页的分段选择一致 */
nav { display: grid; grid-template-columns: 1fr 1fr; margin: 0 0 26px; padding: 0; border: 1px solid var(--a-ink); border-radius: 0; background: transparent; }
button, input { font: inherit; }
button, a, input { touch-action: manipulation; }
button { cursor: pointer; min-height: 44px; padding: 10px 16px; border: 1px solid var(--a-hair2); border-radius: 0; background: transparent; color: var(--a-ink); font: 400 13px/1.2 var(--a-sans); letter-spacing: .22em; }
nav button { border: 0; font-size: 12px; letter-spacing: .3em; }
nav button + button { border-left: 1px solid var(--a-ink); }
nav button[aria-current=page] { background: var(--a-ink); color: var(--a-bg); }

/* 表单：只留下边细线，和聊天输入框一致 */
.field { margin: 0 0 20px; }
label { display: block; margin: 0 0 6px; color: var(--a-t2); font-size: 12px; letter-spacing: .2em; }
input:not([type=checkbox]) { width: 100%; min-height: 46px; padding: 8px 0; border: 0; border-bottom: 1px solid var(--a-hair2); border-radius: 0; background: transparent; color: var(--a-ink); font: 400 16px/1.4 var(--a-sans); }
input::placeholder { color: var(--a-t2); opacity: .6; }
input:focus-visible { outline: 0; border-bottom-color: var(--a-ink); box-shadow: 0 1px 0 var(--a-ink); }
button:focus-visible, a:focus-visible { outline: 2px solid var(--a-ink); outline-offset: 3px; }
small { display: block; margin-top: 8px; color: var(--a-t2); font-size: 12px; line-height: 1.7; }
.password-row, .code-row { display: flex; gap: 14px; align-items: flex-end; }
.password-row input, .code-row input { flex: 1; min-width: 0; }
.code-row button, .password-row button { flex: none; min-height: 44px; padding: 0 2px; border: 0; background: transparent; color: var(--a-ink); font-size: 12px; letter-spacing: .18em; text-decoration: underline; text-underline-offset: 5px; text-decoration-thickness: 1px; }
.check-row { display: flex; align-items: center; gap: 12px; margin: 4px 0 22px; font-size: 13px; letter-spacing: .04em; color: var(--a-ink); }
.check-row input { appearance: none; -webkit-appearance: none; display: grid; place-content: center; flex: none; width: 20px; height: 20px; margin: 0; border: 1px solid var(--a-ink); border-radius: 0; background: transparent; }
.check-row input:checked { background: var(--a-ink); }
.check-row input:checked::after { content: ""; width: 9px; height: 5px; border-left: 1.5px solid var(--a-bg); border-bottom: 1.5px solid var(--a-bg); transform: rotate(-45deg) translate(1px, -1px); }

/* 按钮 */
.primary, .secondary { display: flex; align-items: center; justify-content: center; width: 100%; min-height: 50px; margin-top: 8px; border-radius: 0; text-decoration: none; font-size: 14px; letter-spacing: .4em; }
.primary { border: 1px solid var(--a-ink); background: var(--a-ink); color: var(--a-bg); }
.secondary { border: 1px solid var(--a-ink); background: transparent; color: var(--a-ink); }
.text-button { display: block; width: auto; margin: 14px auto 0; min-height: 44px; padding: 0 8px; border: 0; background: transparent; color: var(--a-t2); font-size: 12px; letter-spacing: .16em; text-decoration: underline; text-underline-offset: 5px; text-decoration-thickness: 1px; }
button:disabled { opacity: .4; cursor: not-allowed; }
.danger { color: var(--a-rust); }

/* 状态与提示 */
.status { margin: 0 0 18px; padding: 0 0 0 12px; border-left: 2px solid var(--a-ink); font-size: 13px; line-height: 1.8; }
.status.error { border-left-color: var(--a-rust); color: var(--a-rust); }
.legacy-link { display: block; margin-top: 22px; color: var(--a-t2); font-size: 12px; text-align: center; letter-spacing: .06em; text-decoration: underline; text-underline-offset: 4px; }
.footer-note { margin: 26px 22px 0; color: var(--a-t2); font-size: 11px; line-height: 1.9; letter-spacing: .12em; text-align: center; }

/* 账号信息 */
dl { margin: 0 0 22px; border-top: 1px solid var(--a-hair); }
dl div { display: flex; justify-content: space-between; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--a-hair); }
dt { color: var(--a-t2); font-size: 12px; letter-spacing: .2em; }
dd { margin: 0; text-align: right; font-family: var(--a-serif); overflow-wrap: anywhere; }
#account-profile .secondary { justify-content: space-between; margin-top: 0; padding: 0 2px; border: 0; border-bottom: 1px solid var(--a-hair); font-size: 14px; letter-spacing: .12em; text-align: left; }
#account-profile .secondary::after { content: "→"; color: var(--a-t2); }
#account-profile .continue-link { margin: 6px 0 18px; }

/* 充值 / 后台（operations.css 里的部件） */
.operation-item { border: 0; border-top: 1px solid var(--a-hair); border-radius: 0; padding: 14px 0; margin: 0; }
.operations-shell select, .operations-shell textarea { border: 0; border-bottom: 1px solid var(--a-hair2); border-radius: 0; padding: 8px 0; background: transparent; color: var(--a-ink); }
.operations-shell a { color: var(--a-ink); }
.operations-shell { width: min(100%, 430px); }

@media (min-width: 651px) {
  body { background: #D9D4CB; }
  .account-shell { min-height: calc(100vh - 80px); margin: 40px auto; border: 1px solid var(--a-hair2); }
}
@media (max-width: 400px) {
  .account-card { margin: 20px 16px 0; padding: 24px 20px 26px; }
  h1 { font-size: 26px; }
  .brand { padding: 0 16px; }
}