:root{--auth-ink:#183b46;--auth-muted:#68818a;--auth-teal:#267f80;--auth-line:#dbe7e7;--auth-error:#b54444}
*{box-sizing:border-box}html,body{height:100%;min-height:0;margin:0;overflow:hidden}body{background:#eef4f4;color:var(--auth-ink);font-family:"Microsoft YaHei","PingFang SC",system-ui,-apple-system,sans-serif;-webkit-font-smoothing:antialiased}button,input{font:inherit}button{color:inherit}
.auth-shell{height:100vh;min-height:0;display:grid;grid-template-columns:minmax(590px,55%) minmax(520px,45%);overflow:hidden}
.auth-story{position:relative;height:100vh;min-height:0;padding:clamp(50px,8.8vh,91px) 54px 38px 72px;background:linear-gradient(145deg,#fffefa 0%,#f9fbf7 54%,#eef7f5 100%);isolation:isolate;overflow:hidden}
.story-wash{position:absolute;inset:0;background:radial-gradient(circle at 18% 18%,rgba(215,239,233,.62),transparent 29%),radial-gradient(circle at 76% 70%,rgba(218,238,241,.55),transparent 35%);z-index:-3}
.scene-art{position:absolute;z-index:-2;inset:0;width:100%;height:100%;object-fit:cover;object-position:center bottom;mix-blend-mode:multiply;opacity:.89;pointer-events:none;user-select:none}
.brand{display:block;width:max-content}.brand-mark{display:none}.brand-copy{font-size:54px;font-weight:800;letter-spacing:.015em;color:#073f4a}
.story-copy{position:relative;z-index:1;max-width:615px;margin-top:8px}.story-copy h1{display:none}.story-copy .lead{position:relative;margin:0;font-size:18px;line-height:1.85;letter-spacing:.02em;color:#294e56;max-width:590px}.story-copy .lead::after{content:"";display:block;width:38px;height:3px;margin-top:17px;background:#139aa5}
.benefits{display:grid;gap:16px;margin-top:42px;width:300px}.benefit{display:grid;grid-template-columns:38px 1fr;gap:12px;align-items:center;min-height:38px}.benefit-icon{width:38px;height:38px;display:grid;place-items:center;border-radius:50%;background:rgba(205,238,236,.86);color:#16889a}.benefit-icon svg{width:21px;height:21px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.benefit strong{display:block;font-size:14px;line-height:1.4;color:#174b55}
.evidence-flow{position:absolute;z-index:2;left:72px;bottom:clamp(30px,6.2vh,64px);width:622px;height:112px;display:grid;grid-template-columns:repeat(4,1fr);align-items:end;padding:48px 20px 17px;border:1px solid rgba(69,133,132,.15);border-radius:14px;background:rgba(255,255,255,.83);box-shadow:0 15px 36px rgba(45,86,86,.06);backdrop-filter:blur(12px)}.evidence-flow::before{content:"循环康复闭环";position:absolute;left:24px;top:16px;font-size:15px;font-weight:800;color:#244c54}.flow-step{position:relative;text-align:center;padding:0 8px;white-space:nowrap}.flow-step:not(:last-child)::after{content:"→";position:absolute;right:-8px;top:-5px;color:#a8bcbc;font-size:18px}.flow-step b{display:block;color:#16889a;font-size:12px}
.auth-side{position:relative;height:100vh;min-height:0;padding:0 48px;display:flex;align-items:center;justify-content:center;background:linear-gradient(160deg,#f5f9fb 0%,#f8fbfb 52%,#edf3f3 100%);overflow:hidden}.auth-side::before{content:"";position:absolute;width:410px;height:410px;border-radius:50%;right:-210px;top:-170px;background:rgba(199,229,225,.5)}.auth-stack{position:relative;width:min(100%,572px);height:100vh;display:flex;flex-direction:column;justify-content:center}
.auth-card{flex:none;width:100%;height:min(700px,calc(100vh - 56px));min-height:0;overflow:hidden;padding:16px 42px;border:1px solid rgba(190,207,209,.43);border-radius:22px;background:rgba(255,255,255,.96);box-shadow:0 18px 45px rgba(47,79,81,.12);backdrop-filter:blur(16px)}body:not(.register-mode) .auth-card{height:min(560px,calc(100vh - 80px))}body.demo-enabled:not(.register-mode) .auth-card{height:min(640px,calc(100vh - 56px))}
.mode-tabs{display:grid;grid-template-columns:1fr 1fr;padding:0;margin-bottom:20px;border-bottom:1px solid #dce8e9;background:none}.mode-tab{position:relative;height:48px;border:0;border-radius:0;background:transparent;color:#5d6878;font-size:18px;font-weight:800;cursor:pointer}.mode-tab.active{background:none;color:#008fab;box-shadow:none}.mode-tab.active::after{content:"";position:absolute;left:15%;right:15%;bottom:-1px;height:3px;background:#079bb1}.mode-tab:focus-visible,.role:focus-visible,.password-toggle:focus-visible,.primary-action:focus-visible,.demo-button:focus-visible{outline:3px solid rgba(44,134,131,.22);outline-offset:2px}
.section-label{display:block;margin:0 0 8px;font-size:12px;font-weight:800;color:#4d5e6b}.role-row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:14px}.role{position:relative;height:70px;padding:9px 7px 7px;border:1px solid var(--auth-line);border-radius:12px;background:#fff;color:#667781;cursor:pointer;transition:border-color .2s,background .2s,box-shadow .2s}.role svg{display:block;width:24px;height:24px;margin:0 auto 4px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.role span{display:block;font-size:12px;font-weight:800}.role small{position:absolute;right:5px;top:5px;padding:1px 4px;border-radius:8px;background:#eef3f3;color:#8a9b9f;font-size:8px;font-weight:600}.role.active{border-color:#099cb4;background:#f2fbfc;color:#078ca5;box-shadow:0 6px 16px rgba(49,124,121,.07)}.register-mode .role[data-r="admin"]{opacity:.43;cursor:not-allowed;background:#f6f7f7;box-shadow:none}
.field{margin-bottom:10px}.field label{display:block;margin-bottom:5px;color:#50606c;font-size:12px;font-weight:800}.control{position:relative}.control-icon{position:absolute;left:14px;top:50%;width:18px;height:18px;transform:translateY(-50%);stroke:#80979c;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;pointer-events:none}.auth-input{display:block;width:100%;height:42px;padding:0 42px;border:1px solid #d7e3e3;border-radius:10px;background:#fff;color:#23474f;font-size:13px;outline:none;transition:border-color .2s,box-shadow .2s,background .2s}.auth-input::placeholder{color:#a7b5b8}.auth-input:focus{border-color:#61a9a6;background:#fff;box-shadow:0 0 0 4px rgba(58,143,139,.1)}
.password-toggle{position:absolute;right:4px;top:2px;width:38px;height:38px;display:grid;place-items:center;border:0;border-radius:9px;background:transparent;color:#82989c;cursor:pointer}.password-toggle:hover{background:#edf5f4;color:#2b7b79}.password-toggle svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.err{display:none;margin:0 0 10px;padding:8px 10px;border:1px solid #f1cccc;border-radius:9px;background:#fff2f2;color:var(--auth-error);font-size:11px;line-height:1.35}.primary-action{width:100%;height:46px;margin-top:2px;border:0;border-radius:9px;background:linear-gradient(120deg,#078fb0,#12a6b1);box-shadow:0 9px 20px rgba(16,150,168,.16);color:#fff;font-size:14px;font-weight:800;letter-spacing:.14em;cursor:pointer;transition:transform .18s,box-shadow .18s,opacity .18s}.primary-action:hover{transform:translateY(-1px);box-shadow:0 12px 24px rgba(16,150,168,.21)}.primary-action:disabled{cursor:wait;opacity:.7;transform:none}.mode-hint{margin:10px 0 0;text-align:center;color:#7c9095;font-size:11px}.mode-hint button{border:0;background:transparent;color:#078ea6;font-weight:700;cursor:pointer;padding:2px 4px}
.demo-zone{margin-top:12px;padding-top:10px;border-top:1px dashed #d7e3e3}.demo-title{text-align:center;color:#83979b;font-size:10px;margin-bottom:7px}.demo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}.demo-button{height:34px;border:1px solid #dce7e7;border-radius:9px;background:#f8fbfa;color:#456a70;font-size:10px;cursor:pointer}.register-mode .demo-zone{display:none!important}
.trust{display:flex;align-items:center;justify-content:center;gap:22px;margin-top:20px;padding-top:14px;border-top:1px solid #e5ecec;color:#6f858a;font-size:10px}.trust span{position:relative}.trust span:not(:last-child)::after{content:"·";position:absolute;right:-13px;color:#9ab0b3}.auth-footer{flex:none;height:32px;padding:10px 18px 0;text-align:center;color:#6d858a;font-size:10px;line-height:1.2}[hidden]{display:none!important}
@media(max-width:1180px){.auth-shell{grid-template-columns:minmax(470px,49%) minmax(500px,51%)}.auth-story{padding-left:44px;padding-right:38px}.brand-copy{font-size:43px}.story-copy .lead{font-size:16px}.benefits{width:300px}.evidence-flow{left:44px;right:34px;width:auto}.flow-step b{font-size:11px}.auth-side{padding-left:34px;padding-right:34px}}
@media(max-width:820px){html,body{height:auto;min-height:100%;overflow:visible}.auth-shell{display:block;height:auto;min-width:0;overflow:hidden}.auth-story{height:210px;min-height:210px;padding:26px 24px;overflow:hidden}.brand-copy{font-size:22px}.story-copy{margin-top:10px}.story-copy .lead{margin-top:0;font-size:12px;line-height:1.55;max-width:280px}.story-copy .lead::after{margin-top:11px}.benefits,.evidence-flow{display:none}.scene-art{inset:auto 0 -85px auto;width:220px;height:330px;opacity:.3;transform:none}.auth-side{display:block;height:auto;min-height:calc(100vh - 210px);padding:18px 14px 28px;overflow:visible}.auth-side::before{display:none}.auth-stack{height:auto;display:block}.auth-card,body:not(.register-mode) .auth-card,body.demo-enabled:not(.register-mode) .auth-card{height:auto;min-height:0;overflow:visible;padding:22px 20px 20px;border-radius:20px}.mode-tabs{margin-bottom:18px}.mode-tab{height:46px;font-size:16px}.role-row{gap:7px}.role{height:68px;padding-left:3px;padding-right:3px}.field{margin-bottom:12px}.auth-input{height:46px;font-size:14px}.password-toggle{top:4px}.primary-action{height:48px}.trust{margin-top:18px;gap:18px}.auth-footer{height:auto;padding-top:14px;font-size:9px}}
@media(max-width:380px){.auth-story{padding-left:19px}.auth-side{padding-left:10px;padding-right:10px}.auth-card{padding-left:16px;padding-right:16px}.demo-grid{gap:5px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}