/**
 * 文件名称：styles.css
 *
 * 文件说明：
 * 舌象智能体 Web 演示端视觉系统、响应式布局与交互状态样式。
 *
 * 核心职责：
 * 1. 实现医疗可信风格的语义化颜色、字体、间距和阴影令牌。
 * 2. 覆盖上传、表单、结果报告、加载及错误反馈等组件状态。
 * 3. 支持桌面、平板、移动端、键盘焦点与减少动效偏好。
 *
 * 依赖说明：
 * 无第三方 CSS 依赖，使用浏览器原生 CSS 能力。
 *
 * 注意事项：
 * 所有正文对比度需达到 WCAG AA，交互目标最小高度为 44px。
 *
 * @author  rigden
 * @created 2026.7.30
 * @version v1.0.0
 */

:root {
  color-scheme: light;
  --color-primary: #71C9CE;
  --color-primary-strong: #5ab8bd;
  --color-on-primary: #ffffff;
  --color-secondary: #A6E3E9;
  --color-accent: #CBF1F5;
  --color-accent-hover: #b5e4e9;
  --color-background: #E3FDFD;
  --color-background-soft: #d6f7f7;
  --color-surface: #ffffff;
  --color-surface-raised: #f0fafa;
  --color-foreground: #26383c;
  --color-text: #37464a;
  --color-text-muted: #50666a;
  --color-muted: #d4f0f2;
  --color-border: #b8e4e8;
  --color-border-strong: #8fd6db;
  --color-danger: #b91c1c;
  --color-danger-soft: #fef2f2;
  --color-warning: #a16207;
  --color-warning-soft: #fffbeb;
  --color-success: #047857;
  --color-success-soft: #ecfdf5;
  --color-ring: #71C9CE;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --shadow-sm: 0 1px 2px rgba(9, 69, 78, 0.06);
  --shadow-md: 0 8px 24px rgba(9, 69, 78, 0.08);
  --shadow-lg: 0 18px 48px rgba(9, 69, 78, 0.12);
  --font-heading: "Figtree", "Microsoft YaHei UI", "PingFang SC", sans-serif;
  --font-body: "Noto Sans", "Microsoft YaHei UI", "PingFang SC", sans-serif;
  --transition: 200ms ease;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100dvh;
  color: var(--color-text);
  background:
    radial-gradient(circle at 9% 8%, color-mix(in srgb, var(--color-secondary) 12%, transparent), transparent 26rem),
    linear-gradient(180deg, var(--color-background) 0, var(--color-background-soft) 480px, #f6f3f3 100%);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

button,
input {
  font: inherit;
}

button,
label,
summary,
.upload-zone {
  touch-action: manipulation;
}

button,
summary,
.choice-card,
.segmented-control label,
.upload-zone {
  cursor: pointer;
}

button:focus-visible,
input:focus-visible,
summary:focus-visible,
.upload-zone:focus-visible,
a:focus-visible {
  outline: 3px solid var(--color-ring);
  outline-offset: 3px;
}

svg {
  display: block;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

[hidden] {
  display: none !important;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 8px;
  left: 8px;
  padding: 10px 16px;
  color: var(--color-on-primary);
  background: var(--color-primary-strong);
  border-radius: var(--radius-sm);
  transform: translateY(-150%);
  transition: transform var(--transition);
  white-space: nowrap;
}

.skip-link:focus {
  transform: translateY(0);
}

.topbar {
  position: relative;
  z-index: 10;
  border-bottom: 1px solid color-mix(in srgb, var(--color-border-strong) 55%, transparent);
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(16px);
}

.topbar__inner,
.hero,
.workspace,
.boundary-section,
.shoot-guide,
footer {
  width: min(1200px, calc(100% - 40px));
  margin-inline: auto;
}

.topbar__inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.topbar__brand-group {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.back-home {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: -10px;
  padding: 6px 10px;
  color: var(--color-text-muted);
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 650;
  transition: color var(--transition), background-color var(--transition);
}

.back-home:hover {
  color: var(--color-foreground);
  background: var(--color-muted);
}

.back-home svg {
  width: 17px;
  height: 17px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--color-foreground);
  text-decoration: none;
}

.brand__mark {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  color: var(--color-primary);
  background: linear-gradient(145deg, #ffffff, var(--color-muted));
  border: 1px solid var(--color-border);
  border-radius: 14px;
  box-shadow: var(--shadow-sm);
}

.brand__mark svg {
  width: 28px;
  height: 28px;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-family: var(--font-heading);
  font-size: 17px;
  line-height: 1.25;
}

.brand small {
  margin-top: 2px;
  color: var(--color-text-muted);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
}

.service-state {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 13px;
  color: var(--color-text-muted);
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
}

.service-state__dot {
  width: 9px;
  height: 9px;
  background: #c49a3a;
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(196, 154, 58, 0.13);
}

.service-state--ready {
  color: var(--color-success);
  border-color: #a7e0ca;
}

.service-state--ready .service-state__dot {
  background: var(--color-success);
  box-shadow: 0 0 0 4px rgba(4, 120, 87, 0.12);
}

.service-state--error {
  color: var(--color-danger);
  border-color: #fecaca;
}

.service-state--error .service-state__dot {
  background: var(--color-danger);
  box-shadow: 0 0 0 4px rgba(185, 28, 28, 0.1);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2xl);
  padding-block: 20px 20px;
}

.eyebrow,
.step-label {
  color: #3c7278;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 780px;
  margin: 0 0 8px;
  color: var(--color-foreground);
  font-family: var(--font-heading);
  font-size: clamp(26px, 3vw, 36px);
  line-height: 1.35;
  letter-spacing: -0.035em;
}

.hero__description {
  max-width: 700px;
  margin: 0;
  color: var(--color-text-muted);
  font-size: 17px;
}

.scope-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  margin-top: 12px;
}

.scope-list span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--color-foreground);
  font-size: 14px;
  font-weight: 650;
}

.scope-list svg {
  width: 18px;
  height: 18px;
  padding: 3px;
  color: #366c72;
  background: var(--color-accent);
  border-radius: 50%;
  stroke-width: 2.5;
}

.scope-boundary {
  margin: 8px 0 0;
  color: var(--color-text-muted);
  font-size: 13px;
  line-height: 1.5;
}

.hero__notice {
  display: flex;
  gap: 14px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.notice-icon {
  width: 44px;
  height: 44px;
  flex: 0 0 44px;
  display: grid;
  place-items: center;
  color: var(--color-primary);
  background: var(--color-background-soft);
  border-radius: 13px;
}

.notice-icon svg {
  width: 23px;
  height: 23px;
}

.hero__notice strong {
  color: var(--color-foreground);
}

.hero__notice p {
  margin: 4px 0 0;
  color: var(--color-text-muted);
  font-size: 13px;
  line-height: 1.55;
}

.shoot-guide {
  display: grid;
  grid-template-columns: minmax(200px, 280px) minmax(0, 1fr);
  align-items: center;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
  padding: 20px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.shoot-guide__figure {
  margin: 0;
}

.shoot-guide__figure img,
.shoot-guide__figure video {
  display: block;
  height: 240px;
  width: auto;
  max-width: 100%;
  margin-inline: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-muted);
}

.shoot-guide__body h2 {
  margin: 0 0 6px;
  color: var(--color-foreground);
  font-family: var(--font-heading);
  font-size: 18px;
}

.shoot-guide__intro {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 14px;
}

.shoot-guide__tips {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.shoot-guide__tips li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  color: var(--color-foreground);
  font-size: 16px;
  line-height: 1.6;
}

.shoot-guide__tips li + li {
  margin-top: 8px;
}

.shoot-guide__check {
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
  display: grid;
  place-items: center;
  margin-top: 1px;
  color: #366c72;
  background: var(--color-accent);
  border-radius: 50%;
  font-size: 12px;
  font-weight: 800;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 0.94fr) minmax(0, 1.06fr);
  align-items: start;
  gap: var(--space-lg);
}

.assessment-card,
.result-card {
  min-width: 0;
  padding: 28px;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

.result-card {
  position: sticky;
  top: 24px;
  min-height: 692px;
}

.card-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-md);
  padding-bottom: 22px;
  border-bottom: 1px solid var(--color-border);
}

.card-heading h2 {
  margin: 4px 0 0;
  color: var(--color-foreground);
  font-family: var(--font-heading);
  font-size: 23px;
  line-height: 1.25;
}

.assessment-card .card-heading {
  flex-direction: row;
  gap: 12px;
  padding-bottom: 14px;
}

.assessment-card .card-heading h2 {
  font-size: 20px;
  line-height: 1.4;
}

.assessment-card .required-note {
  align-self: flex-end;
  font-size: 12px;
  white-space: nowrap;
}

.required-note {
  color: var(--color-text-muted);
  font-size: 13px;
}

.required-note span,
.field-label > span:not(.optional-label) {
  color: var(--color-danger);
}

.field-group {
  min-width: 0;
  margin: 22px 0 0;
}

fieldset.field-group {
  padding: 0;
  border: 0;
}

.field-label {
  display: block;
  margin-bottom: 9px;
  color: var(--color-foreground);
  font-size: 16px;
  font-weight: 700;
}

.field-help,
.field-error {
  margin: 7px 0 0;
  font-size: 14px;
  line-height: 1.5;
}

.field-help {
  color: var(--color-text-muted);
}

.field-error {
  min-height: 0;
  color: var(--color-danger);
  font-weight: 600;
}

.optional-label {
  display: inline-block;
  margin-left: 6px;
  padding: 1px 7px;
  color: var(--color-text-muted);
  background: var(--color-muted);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  vertical-align: 1px;
}

.upload-zone {
  min-height: 170px;
  position: relative;
  display: grid;
  place-items: center;
  overflow: hidden;
  padding: 14px;
  background: var(--color-surface-raised);
  border: 1.5px dashed var(--color-border-strong);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition), background-color var(--transition), box-shadow var(--transition);
}

.upload-zone:hover,
.upload-zone--dragging {
  background: var(--color-background-soft);
  border-color: var(--color-primary);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--color-primary) 12%, transparent);
}

.upload-zone--invalid {
  background: var(--color-danger-soft);
  border-color: var(--color-danger);
}

.upload-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.upload-icon {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  margin-bottom: 8px;
  color: var(--color-primary);
  background: var(--color-muted);
  border-radius: 15px;
}

.upload-icon svg {
  width: 25px;
  height: 25px;
}

.upload-empty strong {
  color: var(--color-foreground);
  font-size: 16px;
}

.upload-empty > span {
  margin-top: 5px;
  color: var(--color-text-muted);
  font-size: 14px;
}

.upload-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 14px;
}

.upload-action {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 16px;
  color: #2d7077;
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  font-weight: 700;
  transition: background-color var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.upload-action i {
  font-size: 14px;
}

.upload-action:hover {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 10%, transparent);
}

.upload-preview {
  width: 100%;
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
}

.upload-preview img {
  width: 82px;
  height: 106px;
  object-fit: cover;
  background: var(--color-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.preview-meta {
  min-width: 0;
}

.preview-meta strong,
.preview-meta span {
  display: block;
}

.preview-meta strong {
  overflow: hidden;
  color: var(--color-foreground);
  font-size: 14px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.preview-meta span {
  margin-top: 4px;
  color: var(--color-text-muted);
  font-size: 12px;
}

.text-button {
  min-height: 44px;
  padding: 8px 12px;
  color: #2d7077;
  background: transparent;
  border: 0;
  border-radius: var(--radius-sm);
  font-weight: 700;
  transition: background-color var(--transition);
}

.text-button:hover {
  background: var(--color-muted);
}

.form-grid,
.advanced-grid,
.coordinate-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-md);
}

.input-shell {
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.preview-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  flex-wrap: wrap;
}

.input-shell:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 14%, transparent);
}

.input-shell input[type="number"] {
  min-width: 0;
  min-height: 48px;
  flex: 1;
  padding: 12px 14px;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none !important;
  appearance: textfield;
}

.input-shell span {
  display: grid;
  place-items: center;
  flex: 0 0 38px;
  min-height: 30px;
  margin-right: 8px;
  color: var(--color-text-muted);
  background: var(--color-surface-raised);
  border-radius: 6px;
  font-size: 14px;
}

#ageInput::-webkit-inner-spin-button,
#ageInput::-webkit-outer-spin-button {
  margin: 0;
  appearance: none;
}

.input-shell:has(input[aria-invalid="true"]) {
  border-color: var(--color-danger);
}

input[type="number"],
input[type="text"],
input[type="password"] {
  width: 100%;
  min-height: 46px;
  padding: 10px 13px;
  color: var(--color-foreground);
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
}

input::placeholder {
  color: var(--color-text-muted);
}

input[type="number"]:focus,
input[type="text"]:focus,
input[type="password"]:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 14%, transparent);
}

input[aria-invalid="true"] {
  border-color: var(--color-danger);
}

input[aria-invalid="true"]:focus {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-danger) 14%, transparent);
}

.segmented-control {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 5px;
  padding: 4px;
  background: var(--color-muted);
  border-radius: 10px;
}

.segmented-control label {
  min-width: 0;
}

.segmented-control input,
.choice-card input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.segmented-control span {
  min-height: 38px;
  display: grid;
  place-items: center;
  color: var(--color-text-muted);
  border-radius: 7px;
  font-size: 14px;
  font-weight: 700;
  transition: color var(--transition), background-color var(--transition), box-shadow var(--transition);
}

.segmented-control input:checked + span {
  color: var(--color-primary-strong);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.segmented-control input:focus-visible + span,
.choice-card input:focus-visible ~ span {
  outline: 3px solid var(--color-ring);
  outline-offset: 2px;
}

.geo-fieldset {
  padding-top: 0 !important;
  border-top: 0 !important;
}

.geo-fieldset .field-label {
  margin-bottom: 4px;
}

.geo-fieldset > .field-help {
  margin-top: 0;
}

.choice-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 9px;
  margin-top: 13px;
}

.choice-card {
  min-width: 0;
  min-height: 92px;
  position: relative;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 12px 10px;
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  transition: border-color var(--transition), background-color var(--transition), box-shadow var(--transition);
}

.choice-card:hover {
  border-color: var(--color-border-strong);
}

.choice-card:has(input:checked) {
  background: var(--color-background-soft);
  border-color: var(--color-primary);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--color-primary) 12%, transparent);
}

.choice-card__icon {
  width: 32px;
  height: 32px;
  flex: 0 0 32px;
  display: grid;
  place-items: center;
  color: var(--color-primary);
  background: var(--color-muted);
  border-radius: 9px;
}

.choice-card__icon svg {
  width: 18px;
  height: 18px;
}

.choice-card strong,
.choice-card small {
  display: block;
}

.choice-card strong {
  color: var(--color-foreground);
  font-size: 14px;
  line-height: 1.4;
}

.choice-card small {
  margin-top: 3px;
  color: var(--color-text-muted);
  font-size: 13px;
  line-height: 1.35;
}

.coordinate-fields {
  margin-top: var(--space-md);
  padding: var(--space-md);
  background: var(--color-background-soft);
  border-radius: var(--radius-md);
}

.coordinate-fields label {
  display: block;
  margin-bottom: 6px;
  color: var(--color-text-muted);
  font-size: 14px;
  font-weight: 700;
}

.advanced-settings {
  margin-top: 22px;
  border-top: 1px solid var(--color-border);
}

.advanced-settings summary {
  min-height: 40px;
  display: flex;
  align-items: center;
  color: var(--color-primary-strong);
  font-size: 13px;
  font-weight: 700;
}

.advanced-settings summary::marker {
  color: var(--color-primary);
}

.advanced-grid .field-group {
  margin-top: 8px;
}

.advanced-settings > .field-group {
  margin-top: 8px;
}

.form-message {
  margin-top: var(--space-md);
  padding: 12px 14px;
  color: var(--color-danger);
  background: var(--color-danger-soft);
  border: 1px solid #fecaca;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
}

.primary-button {
  width: 100%;
  min-height: 52px;
  display: grid;
  place-items: center;
  margin-top: 24px;
  padding: 12px 20px;
  color: var(--color-on-primary);
  background: var(--color-accent);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  box-shadow: 0 8px 18px color-mix(in srgb, var(--color-primary) 16%, transparent);
  font-weight: 750;
  transition: background-color var(--transition), border-color var(--transition), box-shadow var(--transition), opacity var(--transition);
}

.primary-button--ready {
  background: #237c82;
  border-color: #237c82;
}

.primary-button:hover:not(:disabled) {
  background: #1b676d;
  border-color: #1b676d;
  box-shadow: 0 10px 24px color-mix(in srgb, var(--color-primary) 22%, transparent);
}

.primary-button:active:not(:disabled) {
  box-shadow: 0 4px 12px color-mix(in srgb, var(--color-primary) 14%, transparent);
}

.primary-button:disabled {
  cursor: not-allowed;
  color: #446e72;
  box-shadow: none;
}

.primary-button--ready:disabled {
  color: var(--color-on-primary);
  cursor: wait;
}

.button-content,
.button-loading {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.button-content svg {
  width: 21px;
  height: 21px;
}

.spinner {
  width: 19px;
  height: 19px;
  border: 2px solid rgba(255, 255, 255, 0.42);
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.privacy-note {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 7px;
  margin: 12px 0 0;
  color: var(--color-text-muted);
  font-size: 13px;
  line-height: 1.5;
  text-align: center;
}

.privacy-note svg {
  width: 15px;
  height: 15px;
  flex: 0 0 15px;
  margin-top: 1px;
}

.result-status {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 750;
}

.result-status--idle {
  color: var(--color-text-muted);
  background: var(--color-muted);
}

.result-status--loading {
  color: var(--color-primary-strong);
  background: var(--color-muted);
}

.result-status--success {
  color: var(--color-success);
  background: var(--color-success-soft);
}

.result-status--error {
  color: var(--color-danger);
  background: var(--color-danger-soft);
}

.result-empty,
.result-loading {
  min-height: 580px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 30px 20px;
  text-align: center;
}

.result-empty__visual {
  width: 180px;
  height: 150px;
  color: var(--color-primary);
}

.result-empty__visual svg,
.scan-visual svg {
  width: 100%;
  height: 100%;
}

.visual-orbit {
  fill: rgba(34, 211, 238, 0.06);
  stroke: var(--color-border-strong);
  stroke-dasharray: 4 6;
}

.visual-tongue {
  fill: var(--color-muted);
  stroke: var(--color-primary);
}

.visual-line {
  stroke: var(--color-primary);
}

.result-empty__visual circle,
.result-empty__visual > svg > path:last-child {
  fill: var(--color-muted);
  stroke: var(--color-primary);
}

.result-empty h3,
.result-loading h3 {
  margin: 22px 0 6px;
  color: var(--color-foreground);
  font-family: var(--font-heading);
  font-size: 19px;
}

.result-empty > p,
.result-loading > p {
  max-width: 400px;
  margin: 0;
  color: var(--color-text-muted);
  font-size: 16px;
}

.process-list {
  width: min(100%, 370px);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.process-list li {
  color: var(--color-text-muted);
  font-size: 13px;
  line-height: 1.4;
}

.process-list span {
  width: 27px;
  height: 27px;
  display: grid;
  place-items: center;
  margin: 0 auto 7px;
  color: var(--color-primary-strong);
  background: var(--color-muted);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  font-weight: 800;
}

.scan-visual {
  width: 180px;
  height: 150px;
  position: relative;
  overflow: hidden;
  color: var(--color-primary);
}

.scan-line {
  position: absolute;
  left: 37px;
  right: 37px;
  top: 24px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  box-shadow: 0 0 12px color-mix(in srgb, var(--color-accent) 50%, transparent);
  animation: scan 2s ease-in-out infinite alternate;
}

.progress-track {
  width: min(100%, 360px);
  height: 7px;
  overflow: hidden;
  margin-top: 22px;
  background: var(--color-muted);
  border-radius: 999px;
}

.progress-track span {
  width: 12%;
  height: 100%;
  display: block;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: inherit;
  transition: width 600ms ease;
}

.result-content {
  padding-top: 22px;
}

.report-header {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.report-header__title {
  margin: 0 0 var(--space-sm);
  color: var(--color-foreground);
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 600;
}

.report-header__body {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.report-header__image {
  width: 104px;
  height: 104px;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--color-border);
  background: var(--color-surface-raised);
}

.report-header__meta {
  min-width: 0;
  overflow-wrap: anywhere;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.report-header__label {
  font-size: 12px;
  color: var(--color-text-muted);
}

.report-header__time {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-foreground);
}

.report-hero {
  padding: 20px;
  background: linear-gradient(145deg, var(--color-background-soft), var(--color-surface-raised));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.report-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 11px;
}

.report-hero h3 {
  margin: 0 0 8px;
  color: var(--color-foreground);
  font-family: var(--font-heading);
  font-size: 20px;
  line-height: 1.4;
}

.report-hero p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 16px;
}

.report-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.report-action {
  min-height: 44px;
  padding: 8px 14px;
  color: var(--color-primary-strong);
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 700;
  transition: background-color var(--transition), border-color var(--transition);
}

.report-action:hover {
  background: var(--color-muted);
  border-color: var(--color-primary);
}

.report-action--copied {
  background: #e6f7ee;
  border-color: #2f9e6e;
  color: #2f9e6e;
  animation: report-copied-pop 0.35s ease;
}

@keyframes report-copied-pop {
  0% { transform: scale(1); }
  40% { transform: scale(1.06); }
  100% { transform: scale(1); }
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 3px 9px;
  color: var(--color-primary-strong);
  background: var(--color-muted);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 750;
}

.tag--success {
  color: var(--color-success);
  background: var(--color-success-soft);
}

.tag--warning {
  color: var(--color-warning);
  background: var(--color-warning-soft);
}

.result-section {
  margin-top: 24px;
}

.result-section__heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 11px;
}

.result-section h3 {
  margin: 0;
  color: var(--color-foreground);
  font-family: var(--font-heading);
  font-size: 18px;
}

.analysis-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 9px;
}

.analysis-item {
  padding: 13px;
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.analysis-item small,
.analysis-item strong,
.analysis-item p {
  display: block;
}

.analysis-item small {
  color: var(--color-text-muted);
  font-size: 12px;
  font-weight: 700;
}

.analysis-item strong {
  margin-top: 5px;
  color: var(--color-primary-strong);
  font-size: 14px;
  line-height: 1.55;
  overflow-wrap: anywhere;
}

.analysis-item p {
  margin: 5px 0 0;
  color: var(--color-text-muted);
  font-size: 16px;
  line-height: 1.65;
  overflow-wrap: anywhere;
}

.observation-copy {
  margin: 0;
  padding: 14px 16px;
  color: var(--color-foreground);
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 16px;
  line-height: 1.75;
  overflow-wrap: anywhere;
  white-space: normal;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 7px;
}

.feature-row {
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 9px 11px;
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: 9px;
  font-size: 14px;
}

.feature-row span:first-child {
  color: var(--color-text-muted);
}

.feature-row strong {
  min-width: 0;
  color: var(--color-foreground);
  line-height: 1.55;
  text-align: right;
  overflow-wrap: anywhere;
  white-space: normal;
}

.feature-row--unavailable strong {
  color: var(--color-text-muted);
  font-weight: 500;
}

.recommendation-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
}

.recommendation-card {
  padding: 13px;
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.recommendation-card h4 {
  margin: 0 0 8px;
  color: var(--color-primary-strong);
  font-size: 16px;
}

.recommendation-card ul,
.notice-list {
  margin: 0;
  padding-left: 18px;
  color: var(--color-text-muted);
  font-size: 16px;
}

.recommendation-card li + li,
.notice-list li + li {
  margin-top: 5px;
}

.context-panel,
.warning-panel,
.disclaimer-panel {
  margin-top: 16px;
  padding: 13px 14px;
  border-radius: var(--radius-md);
  font-size: 14px;
}

.context-panel {
  color: var(--color-primary-strong);
  background: var(--color-background-soft);
  border: 1px solid var(--color-border);
}

.context-panel strong,
.warning-panel strong {
  display: block;
  margin-bottom: 4px;
}

.warning-panel {
  color: #7c4a08;
  background: var(--color-warning-soft);
  border: 1px solid #f5d997;
  font-size: 14px;
  line-height: 1.7;
}

.warning-panel strong {
  margin-bottom: 6px;
  color: #a75a00;
  font-size: 16px;
  font-weight: 800;
}

.disclaimer-panel {
  color: var(--color-text-muted);
  background: var(--color-surface-raised);
  border-left: 3px solid var(--color-border-strong);
}

.report-actions--footer {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  justify-content: center;
}

.technical-details {
  margin-top: 20px;
  border-top: 1px solid var(--color-border);
}

.technical-details summary {
  min-height: 48px;
  display: flex;
  align-items: center;
  color: var(--color-primary-strong);
  font-size: 12px;
  font-weight: 700;
}

.technical-details pre {
  max-height: 300px;
  overflow: auto;
  margin: 0;
  padding: 13px;
  color: var(--color-secondary);
  background: var(--color-foreground);
  border-radius: var(--radius-sm);
  font: 11px/1.6 Consolas, "SFMono-Regular", monospace;
  white-space: pre-wrap;
  word-break: break-word;
}

.boundary-section {
  display: grid;
  grid-template-columns: minmax(240px, 0.7fr) minmax(0, 1.3fr);
  gap: var(--space-2xl);
  margin-top: var(--space-3xl);
  padding: 38px;
  background: var(--color-foreground);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.boundary-section h2 {
  margin: 6px 0 12px;
  color: #ffffff;
  font-family: var(--font-heading);
  font-size: 26px;
  line-height: 1.3;
}

.boundary-section > div:first-child p {
  margin: 0;
  color: #c8dfe2;
  font-size: 13px;
}

.boundary-section .step-label {
  color: var(--color-secondary);
}

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

.boundary-grid article {
  padding: 17px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(184, 231, 235, 0.18);
  border-radius: var(--radius-md);
}

.boundary-grid svg {
  width: 26px;
  height: 26px;
  color: var(--color-secondary);
}

.boundary-grid h3 {
  margin: 12px 0 6px;
  color: #ffffff;
  font-size: 13px;
}

.boundary-grid p {
  margin: 0;
  color: #bdd4d7;
  font-size: 12px;
  line-height: 1.6;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
  padding-block: 34px;
  color: var(--color-text-muted);
  font-size: 12px;
}

footer p {
  margin: 0;
}

footer strong {
  color: var(--color-foreground);
}

.toast {
  position: fixed;
  z-index: 100;
  right: 20px;
  bottom: 20px;
  max-width: min(380px, calc(100% - 40px));
  padding: 12px 16px;
  color: #ffffff;
  background: var(--color-foreground);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: 13px;
  animation: toast-in 200ms ease-out;
}

@media print {
  body {
    background: #ffffff;
  }

  .topbar,
  .hero,
  .shoot-guide,
  .assessment-card,
  .boundary-section,
  footer,
  .toast,
  .report-actions,
  .technical-details {
    display: none !important;
  }

  .workspace {
    display: block !important;
  }

  .result-card {
    min-height: 0;
    position: static;
    padding: 0;
    border: none;
    box-shadow: none;
  }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes scan {
  from { transform: translateY(0); }
  to { transform: translateY(96px); }
}

@keyframes toast-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (min-width: 1200px) {
  .workspace {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }

  .choice-card strong {
    white-space: nowrap;
  }
}

@media screen and (min-width: 1024px) {
  .workspace {
    align-items: stretch;
  }

  .result-card {
    display: flex;
    flex-direction: column;
    position: static;
    contain: size;
    min-height: 0;
    overflow: hidden;
  }

  .result-card > .card-heading,
  .result-card > .report-actions {
    flex-shrink: 0;
  }

  .result-empty,
  .result-loading,
  .result-content {
    flex: 1;
    min-height: 0;
  }

  .result-content {
    overflow-y: auto;
    scrollbar-gutter: stable;
    overscroll-behavior-y: contain;
  }
}

@media (max-width: 1023px) {
  .hero {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .hero__notice {
    max-width: 620px;
  }

  .workspace {
    grid-template-columns: 1fr;
  }

  .result-card {
    position: static;
  }

  .boundary-section {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 767px) {
  .topbar__inner,
  .hero,
  .workspace,
  .boundary-section,
  .shoot-guide,
  footer {
    width: min(100% - 24px, 1200px);
  }

  .shoot-guide {
    grid-template-columns: 1fr;
  }

  .shoot-guide__figure img,
  .shoot-guide__figure video {
    height: 200px;
  }

  .topbar__inner {
    min-height: 64px;
  }

  .brand__mark {
    width: 40px;
    height: 40px;
  }

  .brand small {
    display: none;
  }

  .service-state {
    min-height: 36px;
    padding-inline: 10px;
    font-size: 13px;
  }

  .hero {
    padding-block: 16px 18px;
  }

  .hero h1 {
    font-size: clamp(24px, 6vw, 28px);
  }

  .hero__description {
    font-size: 16px;
  }

  .assessment-card,
  .result-card {
    padding: 20px;
    border-radius: var(--radius-lg);
  }

  .form-grid,
  .advanced-grid,
  .coordinate-fields,
  .analysis-grid,
  .recommendation-grid {
    grid-template-columns: 1fr;
  }

  .choice-grid {
    grid-template-columns: 1fr;
  }

  .choice-card {
    min-height: 68px;
  }

  .choice-card strong {
    font-size: 14px;
  }

  .choice-card small {
    font-size: 13px;
  }

  .upload-preview {
    grid-template-columns: 70px minmax(0, 1fr);
  }

  .upload-preview img {
    width: 70px;
    height: 88px;
    grid-row: span 2;
  }

  .upload-preview .text-button {
    width: fit-content;
    min-height: 36px;
    padding: 5px 8px;
  }

  .result-empty,
  .result-loading {
    min-height: 500px;
    padding-inline: 0;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .boundary-section {
    padding: 26px 20px;
  }

  .boundary-grid {
    grid-template-columns: 1fr;
  }

  footer {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 399px) {
  .upload-icon {
    display: none;
  }

  .preview-actions {
    justify-content: flex-start;
  }

  .topbar__inner {
    align-items: flex-start;
    padding-block: 10px;
  }

  .brand strong {
    font-size: 15px;
  }

  .service-state {
    max-width: 130px;
    line-height: 1.25;
  }

  .card-heading {
    flex-direction: column;
    gap: 5px;
  }

  .process-list {
    grid-template-columns: 1fr;
  }

  .process-list li {
    display: flex;
    align-items: center;
    gap: 8px;
    text-align: left;
  }

  .process-list span {
    flex: 0 0 27px;
    margin: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}