:root {
  color-scheme: light;
  --login-ink: #222923;
  --login-muted: #626b5d;
  --login-accent: #b95632;
  --login-border: #daddd3;
  --login-surface: #efeee7;
  --login-error: #b1342c;
  --login-success: #42704b;
  font-family: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", "Segoe UI", sans-serif;
  color: var(--login-ink);
  background: #fcfcfa;
  font-synthesis: none;
}
* { box-sizing: border-box; }
body { margin: 0; }
button, input { font: inherit; }
button { cursor: pointer; -webkit-tap-highlight-color: transparent; }
button:disabled { cursor: default; }
button, a, input { touch-action: manipulation; }
::selection { color: #222923; background: #e7ccb9; }
.login-layout { display: grid; grid-template-columns: 58% 42%; min-height: 100svh; }
.brand-panel { display: flex; flex-direction: column; padding: 40px clamp(36px, 5.55vw, 90px) 28px; background: var(--login-surface); overflow: hidden; }
.brand-lockup { display: flex; align-items: center; gap: 9px; }
.brand-mark { width: 82px; height: 53px; display: block; flex: none; }
.brand-name { font-size: 26px; font-weight: 650; line-height: 1.35; }
.brand-name small { display: block; margin-top: 4px; color: var(--login-muted); font: 450 11px/1.5 "Segoe UI", sans-serif; letter-spacing: 1.7px; }
.brand-copy { width: 100%; margin: auto 0; padding: 70px 0 24px; }
.brand-copy h1 { margin: 0 0 20px; font-size: clamp(34px, 3.75vw, 60px); font-weight: 650; line-height: 1.32; letter-spacing: -.025em; }
.brand-copy h1 em { color: var(--login-accent); font-style: normal; }
.brand-description { margin: 0; color: var(--login-muted); font-size: clamp(14px, 1.2vw, 19px); line-height: 1.8; }
.scene-hint { display: flex; align-items: center; gap: 9px; margin: 28px 0 13px; color: var(--login-muted); font-size: 14px; line-height: 24px; }
.scene-hint > svg { width: 22px; height: 22px; flex: none; }
.scene-hint .hint-arrow { width: 18px; height: 18px; margin-left: 3px; color: var(--login-accent); }
.brand-scene { position: relative; height: 298px; width: 100%; isolation: isolate; }
.scene-disc { position: absolute; top: 10px; right: 11px; width: 180px; height: 180px; border-radius: 50%; background: #e4c4af; z-index: -1; }
.scene-connections { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; overflow: visible; }
.scene-orbit { stroke: #b6b7a2; stroke-width: 1; stroke-dasharray: 2.5 4; opacity: .75; }
.scene-link { stroke: #a5aa91; stroke-width: 1.15; transition: stroke .2s ease; }
.scene-node { fill: #a5aa91; transition: fill .2s ease; }
.brand-scene[data-active="products"] .scene-link-products, .brand-scene[data-active="sales"] .scene-link-sales, .brand-scene[data-active="inventory"] .scene-link-inventory { stroke: var(--login-accent); }
.brand-scene[data-active="products"] .scene-node-products, .brand-scene[data-active="sales"] .scene-node-sales, .brand-scene[data-active="inventory"] .scene-node-inventory { fill: var(--login-accent); }
.business-card { --card-rotate: 0deg; position: absolute; display: flex; align-items: center; gap: 15px; width: 300px; min-height: 108px; padding: 20px 21px; border: 1px solid transparent; border-radius: 15px; text-align: left; color: var(--login-ink); background: #fcfcfa; box-shadow: 0 12px 30px #3039240b; transform: rotate(var(--card-rotate)); transition: transform .2s cubic-bezier(.2,.7,.25,1), border-color .2s ease, background .2s ease, box-shadow .2s ease; }
.business-card.products { --card-rotate: -4deg; left: 2px; top: 25px; z-index: 2; }
.business-card.sales { --card-rotate: 4deg; right: 0; top: 101px; z-index: 1; }
.business-card.inventory { --card-rotate: -2deg; left: 43px; top: 187px; z-index: 3; }
.business-icon { display: grid; place-items: center; width: 54px; height: 54px; flex: none; background: #eceee4; color: #3c4737; border-radius: 12px; transition: background .2s ease, color .2s ease; }
.business-icon svg { width: 28px; height: 28px; }
.business-copy { flex: 1; min-width: 0; }
.business-copy strong { display: block; font-size: 17px; font-weight: 600; line-height: 1.5; }
.business-copy > span { display: block; margin-top: 5px; color: #65705f; font-size: 12px; line-height: 1.6; white-space: nowrap; }
.business-arrow { width: 15px; height: 15px; flex: none; color: #65705f; transition: transform .2s ease; }
.business-card[aria-pressed="true"] { border-color: #b95632; background: #fcf6f0; box-shadow: none; }
.business-card[aria-pressed="true"] .business-icon { color: #fff; background: var(--login-accent); }
.business-card[aria-pressed="true"] .business-arrow { color: var(--login-accent); }
.business-card:focus-visible { z-index: 4; }
@media (hover: hover) and (pointer: fine) {
  .business-card:hover:not(:disabled) { transform: translateY(-4px) rotate(var(--card-rotate)); }
  .business-card:hover .business-arrow { transform: translateX(2px); }
  .input-action:hover { color: var(--login-ink); background: #f2f3ed; }
}
.business-card:active:not(:disabled) { transform: translateY(-1px) rotate(var(--card-rotate)); }
.module-detail { display: flex; gap: 9px; align-items: baseline; margin: 18px 0 0; min-height: 24px; color: var(--login-muted); font-size: 12px; line-height: 1.8; }
.module-detail strong { font-weight: 600; color: #58644e; white-space: nowrap; }
.module-detail span { overflow-wrap: anywhere; }
.brand-footnote { margin: 16px 0 0; color: var(--login-muted); font: 400 11px/1.5 "Segoe UI", sans-serif; letter-spacing: 1.2px; }
.login-panel { display: flex; flex-direction: column; padding: 44px clamp(36px, 5.6vw, 90px) 28px; background: #fcfcfa; }
.login-topline { text-align: right; color: var(--login-muted); font-size: 12px; letter-spacing: .6px; }
.login-content { width: 100%; max-width: 470px; margin: auto; padding: 82px 0 44px; }
.login-content h2 { margin: 0 0 14px; font-size: clamp(30px, 2.9vw, 46px); font-weight: 650; line-height: 1.3; letter-spacing: -.025em; }
.login-intro { margin: 0 0 42px; color: var(--login-muted); font-size: 17px; line-height: 1.85; }
.form-field { position: relative; margin-top: 28px; }
.form-field label { display: block; margin-bottom: 10px; font-size: 15px; font-weight: 550; transition: color .15s ease; }
.form-field:focus-within label { color: var(--login-accent); }
.input-wrap { position: relative; }
.input-wrap > svg { position: absolute; left: 18px; top: 21px; width: 21px; height: 21px; color: #77816e; pointer-events: none; transition: color .15s ease; }
.input-wrap:focus-within > svg { color: var(--login-accent); }
.form-field input { display: block; width: 100%; height: 64px; border: 1px solid var(--login-border); border-radius: 9px; padding: 0 50px; background: #fff; color: var(--login-ink); caret-color: var(--login-accent); font-size: 16px; line-height: normal; transition: border-color .15s ease, background .15s ease; }
.form-field input::placeholder { color: #6d7665; opacity: 1; font-size: 16px; }
.form-field input:hover:not(:focus):not([readonly]) { border-color: #aab09f; }
.form-field input:focus { outline: 2px solid #aa5431; outline-offset: 2px; border-color: #aa5431; }
.form-field input[readonly] { background: #f6f7f1; }
.form-field input[aria-invalid="true"] { border-color: var(--login-error); }
.form-field input[aria-invalid="true"]:focus { outline-color: var(--login-error); }
.input-action { display: grid; place-items: center; position: absolute; right: 5px; top: 10px; width: 44px; height: 44px; border: 0; border-radius: 6px; background: transparent; color: #6f7865; transition: color .15s ease, background .15s ease; }
.input-action:disabled { opacity: .5; }
.input-action svg { width: 20px; height: 20px; }
.password-toggle .eye-slash { display: none; }
.password-toggle[aria-pressed="true"] .eye-slash { display: block; }
.caps-hint { margin: 8px 0 0; color: #855815; font-size: 12px; line-height: 1.5; }
.login-submit { display: flex; align-items: center; justify-content: center; gap: 16px; width: 100%; height: 64px; margin-top: 32px; border: 1px solid var(--login-accent); border-radius: 9px; background: var(--login-accent); color: #fff; font-size: 16px; font-weight: 550; letter-spacing: 1.5px; transition: background .15s ease, transform .15s ease; }
.login-submit:hover:not(:disabled) { background: #a84927; }
.login-submit:active:not(:disabled) { transform: translateY(1px); }
.login-submit:disabled { cursor: wait; }
.login-submit svg { width: 20px; height: 20px; flex: none; }
.login-submit .submit-spinner, .login-submit .submit-check { display: none; }
.login-submit[aria-busy="true"] .submit-arrow { display: none; }
.login-submit[aria-busy="true"] .submit-spinner { display: block; animation: login-spin .8s linear infinite; }
.login-submit[data-state="success"] { border-color: var(--login-success); background: var(--login-success); }
.login-submit[data-state="success"] .submit-arrow, .login-submit[data-state="success"] .submit-spinner { display: none; }
.login-submit[data-state="success"] .submit-check { display: block; }
.form-feedback { display: grid; min-height: 34px; margin-top: 12px; }
.login-status { grid-area: 1 / 1; margin: 0; color: #53664a; font-size: 12px; line-height: 1.7; }
.login-error { grid-area: 1 / 1; margin: 0; color: var(--login-error); font-size: 12px; line-height: 1.7; overflow-wrap: anywhere; }
.login-help { margin-top: 20px; padding-top: 26px; border-top: 1px solid #e3e5dc; color: #64705c; font-size: 14px; line-height: 1.95; }
.login-help strong { color: #5c6854; font-weight: 500; }
.login-footer { text-align: right; color: var(--login-muted); font-size: 11px; line-height: 1.6; }
[hidden] { display: none !important; }
button:focus-visible { outline: 2px solid #aa5431; outline-offset: 4px; }
@keyframes login-spin { to { transform: rotate(360deg); } }
@media (max-width: 1200px) and (min-width: 801px) {
  .brand-panel { padding-left: 36px; padding-right: 36px; }
  .brand-mark { width: 66px; height: 44px; }
  .brand-name { font-size: 21px; }
  .brand-name small { font-size: 11px; letter-spacing: 1.3px; }
  .brand-copy { padding-top: 42px; }
  .brand-copy h1 { font-size: 34px; }
  .brand-scene { height: 273px; }
  .business-card { width: 220px; padding: 17px 14px; gap: 10px; min-height: 89px; }
  .business-icon { width: 42px; height: 42px; border-radius: 10px; }
  .business-icon svg { width: 24px; height: 24px; }
  .business-copy strong { font-size: 13px; }
  .business-copy > span { font-size: 11px; }
  .business-arrow { width: 11px; }
  .business-card.inventory { left: 21px; top: 181px; }
  .scene-disc { width: 134px; height: 134px; }
  .module-detail { flex-direction: column; gap: 1px; margin-top: 20px; }
  .login-panel { padding-left: 36px; padding-right: 36px; }
  .login-intro { font-size: 13px; }
}
@media (min-width: 801px) and (max-height: 850px) {
  .brand-panel { padding-top: 30px; padding-bottom: 24px; }
  .brand-copy { padding-top: 38px; padding-bottom: 16px; }
  .brand-copy h1 { font-size: clamp(34px, 3.25vw, 49px); line-height: 1.32; margin-bottom: 15px; }
  .brand-description { font-size: 14px; }
  .scene-hint { margin-top: 20px; }
  .brand-scene { height: 241px; }
  .business-card { min-height: 88px; padding-top: 15px; padding-bottom: 15px; }
  .business-card.products { top: 17px; }
  .business-card.sales { top: 84px; }
  .business-card.inventory { top: 156px; }
  .module-detail { margin-top: 24px; }
  .login-content { padding-top: 44px; padding-bottom: 28px; }
  .login-intro { margin-bottom: 30px; }
  .form-field { margin-top: 22px; }
}
@media (max-width: 800px) {
  .login-layout { display: flex; flex-direction: column; min-height: 100svh; }
  .brand-panel { padding: 26px 28px 28px; }
  .brand-lockup { gap: 8px; }
  .brand-mark { width: 62px; height: 40px; }
  .brand-name { font-size: 20px; }
  .brand-name small { font-size: 11px; letter-spacing: 1.1px; margin-top: 3px; }
  .brand-copy { padding: 21px 0 0; margin: 0; max-width: none; }
  .brand-copy h1 { margin: 0; font-size: clamp(22px, 5.7vw, 28px); line-height: 1.5; letter-spacing: -.02em; }
  .brand-description, .brand-interactive, .brand-footnote, .login-topline { display: none; }
  .login-panel { padding: 0 28px 22px; flex: 1; }
  .login-content { padding: 33px 0 27px; max-width: 420px; }
  .login-content h2 { font-size: 28px; margin-bottom: 10px; }
  .login-intro { margin-bottom: 26px; font-size: 13px; }
  .form-field { margin-top: 22px; }
  .form-field input { font-size: 16px; height: 56px; }
  .form-field input::placeholder { font-size: 14px; }
  .input-wrap > svg { top: 18px; }
  .input-action { top: 6px; }
  .login-submit { height: 56px; margin-top: 28px; }
  .login-help { margin-top: 10px; padding-top: 22px; }
  .login-help { font-size: 12px; }
  .login-footer { text-align: center; margin-top: auto; }
}
@media (max-width: 360px) {
  .brand-panel { padding-left: 22px; padding-right: 22px; }
  .login-panel { padding-left: 22px; padding-right: 22px; }
  .brand-copy h1 { font-size: 22px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .business-card:hover:not(:disabled), .business-card:active:not(:disabled) { transform: rotate(var(--card-rotate)); }
  .business-card:hover .business-arrow { transform: none; }
  .login-submit:active:not(:disabled) { transform: none; }
}