:root {
  --green: #00c853;
  --green-deep: #008d3b;
  --ink: #0b1710;
  --muted: #617066;
  --line: rgba(12, 44, 25, 0.11);
  --panel: rgba(255, 255, 255, 0.86);
}

* { box-sizing: border-box; }

html { min-height: 100%; }

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  font-family: "Microsoft YaHei", "Segoe UI", Arial, sans-serif;
  background:
    radial-gradient(circle at 11% 15%, rgba(0, 200, 83, 0.16), transparent 25%),
    radial-gradient(circle at 80% 88%, rgba(0, 141, 59, 0.12), transparent 26%),
    linear-gradient(135deg, #f3fff7 0%, #f7faf8 48%, #eef8f1 100%);
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  opacity: 0.42;
  background-image:
    linear-gradient(rgba(0, 80, 35, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 80, 35, 0.045) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: linear-gradient(to bottom right, black, transparent 74%);
}

.auth-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(360px, 500px);
  gap: clamp(36px, 7vw, 110px);
  align-items: center;
  width: min(1320px, calc(100% - 64px));
  min-height: 100vh;
  margin: 0 auto;
  padding: 46px 0;
}

.system-story { min-width: 0; }

.brand-mark {
  width: 240px;
  height: 120px;
  overflow: hidden;
  margin-bottom: clamp(34px, 6vh, 70px);
}

.brand-mark img {
  display: block;
  width: 240px;
  height: 240px;
  object-fit: cover;
  mix-blend-mode: multiply;
  transform: translateY(-58px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  color: var(--green-deep);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.eyebrow i,
.security-pill i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 6px rgba(0, 200, 83, 0.12);
}

.story-copy h1 {
  margin: 0;
  font-size: clamp(40px, 5.2vw, 72px);
  line-height: 1.08;
  letter-spacing: -0.05em;
}

.story-copy p {
  max-width: 690px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.9;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 42px;
}

.capability-grid article {
  display: flex;
  min-width: 0;
  gap: 12px;
  padding: 17px 15px;
  border: 1px solid rgba(0, 126, 54, 0.1);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.58);
  backdrop-filter: blur(10px);
}

.capability-grid article > span {
  color: var(--green);
  font-size: 11px;
  font-weight: 800;
}

.capability-grid strong,
.capability-grid small { display: block; }
.capability-grid strong { margin-bottom: 7px; font-size: 14px; }
.capability-grid small { color: var(--muted); font-size: 11px; line-height: 1.6; }

.flow-line {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 28px;
  color: #718078;
  font-size: 11px;
  letter-spacing: 0.08em;
}

.flow-line b {
  position: relative;
  width: 44px;
  height: 1px;
  background: linear-gradient(90deg, rgba(0, 200, 83, 0.16), var(--green));
}

.flow-line b::after {
  position: absolute;
  top: -3px;
  right: 0;
  width: 7px;
  height: 7px;
  border-top: 1px solid var(--green);
  border-right: 1px solid var(--green);
  content: "";
  transform: rotate(45deg);
}

.access-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(30px, 4.5vw, 54px);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 30px;
  background: var(--panel);
  box-shadow: 0 36px 90px rgba(14, 55, 31, 0.16), 0 3px 12px rgba(14, 55, 31, 0.06);
  backdrop-filter: blur(24px);
}

.access-panel::before {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 3px;
  content: "";
  background: linear-gradient(90deg, transparent, var(--green), transparent);
}

.mobile-access-logo { display: none; }

.security-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border: 1px solid rgba(0, 200, 83, 0.13);
  border-radius: 999px;
  color: var(--green-deep);
  background: rgba(0, 200, 83, 0.06);
  font-size: 11px;
  font-weight: 700;
}

.access-heading { margin-top: 28px; }
.access-heading > span { color: var(--green-deep); font-size: 11px; font-weight: 800; letter-spacing: 0.16em; }
.access-heading h2 { margin: 10px 0 8px; font-size: 34px; letter-spacing: -0.035em; }
.access-heading p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.7; }

#authForm { margin-top: 30px; }
#authForm label { display: block; margin-bottom: 9px; font-size: 12px; font-weight: 700; }

.code-field { position: relative; }

.code-field input {
  width: 100%;
  height: 54px;
  padding: 0 72px 0 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  outline: none;
  color: var(--ink);
  background: rgba(250, 253, 251, 0.9);
  font: inherit;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.code-field input:focus {
  border-color: rgba(0, 200, 83, 0.7);
  box-shadow: 0 0 0 4px rgba(0, 200, 83, 0.1);
}

.toggle-code {
  position: absolute;
  top: 50%;
  right: 10px;
  padding: 8px 10px;
  border: 0;
  color: var(--green-deep);
  background: transparent;
  font: inherit;
  font-size: 12px;
  cursor: pointer;
  transform: translateY(-50%);
}

.auth-message {
  min-height: 20px;
  margin: 8px 2px 4px;
  color: #c23b32;
  font-size: 12px;
  line-height: 1.6;
}

.auth-message.success { color: var(--green-deep); }

.submit-auth {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  height: 56px;
  padding: 0 20px;
  border: 0;
  border-radius: 15px;
  color: white;
  background: linear-gradient(135deg, #00c853, #009a42);
  box-shadow: 0 16px 30px rgba(0, 173, 73, 0.24);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease, opacity 160ms ease;
}

.submit-auth:hover { transform: translateY(-1px); box-shadow: 0 20px 34px rgba(0, 173, 73, 0.3); }
.submit-auth:disabled { opacity: 0.66; cursor: wait; transform: none; }
.submit-auth i { font-size: 22px; font-style: normal; font-weight: 400; }

.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.trust-grid div { min-width: 0; }
.trust-grid strong,
.trust-grid span { display: block; }
.trust-grid strong { margin-bottom: 5px; color: var(--green-deep); font-size: 10px; letter-spacing: 0.12em; }
.trust-grid span { color: var(--muted); font-size: 10px; line-height: 1.45; }

.session-note { margin: 24px 0 0; color: #819087; font-size: 11px; text-align: center; }

@media (max-width: 980px) {
  .auth-shell {
    grid-template-columns: 1fr;
    width: min(680px, calc(100% - 40px));
    gap: 34px;
    padding: 30px 0 48px;
  }
  .brand-mark { margin-bottom: 24px; }
  .story-copy h1 { font-size: clamp(38px, 9vw, 58px); }
  .access-panel { grid-row: 2; }
}

@media (max-width: 620px) {
  .auth-shell { width: min(100% - 24px, 520px); padding: 20px 0 32px; }
  .access-panel { grid-row: 1; }
  .system-story { grid-row: 2; padding: 4px 8px 0; }
  .brand-mark { display: none; }
  .mobile-access-logo {
    display: block;
    width: 190px;
    height: 94px;
    overflow: hidden;
    margin-bottom: 24px;
  }
  .mobile-access-logo img {
    display: block;
    width: 190px;
    height: 190px;
    object-fit: cover;
    mix-blend-mode: multiply;
    transform: translateY(-46px);
  }
  .eyebrow { margin-bottom: 13px; font-size: 9px; }
  .story-copy h1 { font-size: 36px; }
  .story-copy p { margin-top: 16px; font-size: 14px; line-height: 1.75; }
  .capability-grid { grid-template-columns: 1fr; gap: 8px; margin-top: 24px; }
  .capability-grid article { padding: 12px 13px; }
  .flow-line { display: none; }
  .access-panel { padding: 28px 22px; border-radius: 24px; }
  .access-heading { margin-top: 22px; }
  .access-heading h2 { font-size: 30px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}