/* 万象板材客户一线洞察 — Material intelligence survey system */

:root {
  color-scheme: light;
  --paper: #edf4f8;
  --paper-deep: #dfeaf1;
  --sheet: #ffffff;
  --sheet-2: #f5f9fb;
  --ink: #102b46;
  --ink-soft: #26394e;
  --muted: #66798c;
  --faint: #91a0ad;
  --line: #d7e3ea;
  --line-dark: #bdced9;
  --forest: #075da8;
  --forest-2: #004b8c;
  --forest-soft: #e8f3fb;
  --clay: #c58c48;
  --clay-dark: #9c682d;
  --clay-soft: #f7eddf;
  --oak: #dec096;
  --sand: #eadcc4;
  --danger: #b33b3b;
  --danger-soft: #faeaea;
  --ok: #14805f;
  --radius: 16px;
  --radius-sm: 9px;
  --shadow-sheet: 0 18px 55px rgba(13, 58, 94, 0.08);
  --shadow-float: 0 16px 42px rgba(10, 54, 90, 0.16);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  font-family: "Avenir Next", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink-soft);
  background-color: var(--paper);
  background-image:
    repeating-linear-gradient(0deg, rgba(91, 77, 56, 0.018) 0, rgba(91, 77, 56, 0.018) 1px, transparent 1px, transparent 5px);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.28), transparent 18%, transparent 82%, rgba(83, 67, 45, 0.035));
}

a {
  color: var(--forest);
  text-decoration: none;
}

button,
input,
textarea,
select {
  font: inherit;
}

button,
a,
input,
textarea {
  -webkit-tap-highlight-color: transparent;
}

::selection {
  color: #fff;
  background: var(--forest);
}

.progressbar {
  position: fixed;
  inset: 0 0 auto;
  z-index: 80;
  height: 3px;
  background: transparent;
  pointer-events: none;
}

.progressbar__fill {
  width: 0;
  height: 100%;
  background: var(--clay);
  transition: width 0.24s var(--ease);
}

.survey-page {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 22px 0 42px;
}

/* Masthead */
.brand-masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 62px;
  padding: 0 4px 17px;
  border-bottom: 1px solid var(--line-dark);
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
}

.brand-stamp {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--forest);
  color: #fff;
  font-family: Georgia, serif;
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
}

.brand-words {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-words b {
  color: var(--ink);
  font-size: 17px;
  letter-spacing: 0.16em;
}

.brand-words small {
  margin-top: 5px;
  color: var(--muted);
  font-family: Georgia, serif;
  font-size: 8px;
  letter-spacing: 0.18em;
}

.brand-masthead > p {
  margin: 0;
  color: var(--muted);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.brand-masthead > p span {
  margin: 0 8px;
  color: var(--clay);
}

/* Editorial hero */
.hero-editorial {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 354px;
  gap: 68px;
  align-items: center;
  min-height: 470px;
  padding: 58px 56px;
  overflow: hidden;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line-dark);
  border-left: 1px solid var(--line);
  background: var(--sheet);
  box-shadow: var(--shadow-sheet);
}

.hero-editorial::after {
  content: "VOICE / 01";
  position: absolute;
  right: 18px;
  bottom: 15px;
  color: var(--faint);
  font-family: Georgia, serif;
  font-size: 9px;
  letter-spacing: 0.18em;
}

.hero-copy {
  position: relative;
  z-index: 1;
}

.hero-kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 25px;
  color: var(--clay);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.hero-kicker::before {
  content: "";
  width: 36px;
  height: 1px;
  background: var(--clay);
}

.hero-kicker span {
  color: var(--forest);
  font-family: Georgia, serif;
  font-size: 10px;
  letter-spacing: 0.16em;
}

.hero-editorial h1 {
  margin: 0;
  color: var(--ink);
  font-family: "Songti SC", "STSong", "Noto Serif CJK SC", Georgia, serif;
  font-size: clamp(36px, 4.4vw, 58px);
  font-weight: 700;
  letter-spacing: -0.055em;
  line-height: 1.24;
}

.hero-editorial h1 em {
  position: relative;
  color: var(--forest);
  font-style: normal;
  white-space: nowrap;
}

.hero-editorial h1 em::after {
  content: "";
  position: absolute;
  right: 1px;
  bottom: 1px;
  left: 1px;
  z-index: -1;
  height: 8px;
  background: var(--sand);
  opacity: 0.7;
}

.hero-lead {
  max-width: 650px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.9;
}

.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-top: 34px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.hero-facts span {
  min-width: 150px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 22px 13px 0;
}

.hero-facts span + span {
  padding-left: 22px;
  border-left: 1px solid var(--line);
}

.hero-facts b {
  color: var(--clay);
  font-family: Georgia, serif;
  font-size: 11px;
  letter-spacing: 0.08em;
}

.hero-facts i {
  color: var(--ink-soft);
  font-size: 12px;
  font-style: normal;
  font-weight: 600;
}

/* Material swatch composition */
.material-board {
  position: relative;
  min-height: 338px;
  padding: 24px;
  background: var(--forest);
  box-shadow: 16px 18px 0 var(--paper-deep);
}

.material-board::before {
  content: "";
  position: absolute;
  top: -10px;
  right: 18px;
  width: 62px;
  height: 21px;
  background: rgba(187, 175, 151, 0.45);
  transform: rotate(2deg);
}

.sample {
  position: absolute;
  width: 132px;
  height: 116px;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.32);
  box-shadow: 7px 8px 16px rgba(12, 24, 19, 0.22);
  transition: transform 0.28s var(--ease);
}

.material-board:hover .sample-oak {
  transform: rotate(-7deg) translate(-3px, -4px);
}

.material-board:hover .sample-walnut {
  transform: rotate(5deg) translate(4px, -3px);
}

.sample small,
.sample b {
  position: relative;
  z-index: 1;
}

.sample small {
  display: block;
  color: rgba(34, 38, 33, 0.62);
  font-family: Georgia, serif;
  font-size: 8px;
  letter-spacing: 0.12em;
}

.sample b {
  position: absolute;
  right: 12px;
  bottom: 9px;
  color: rgba(29, 35, 31, 0.82);
  font-size: 13px;
  letter-spacing: 0.12em;
}

.sample-oak {
  top: 30px;
  left: 26px;
  z-index: 2;
  background-color: #d9b586;
  background-image:
    repeating-linear-gradient(86deg, transparent 0 13px, rgba(101, 62, 31, 0.12) 14px, transparent 16px 28px),
    linear-gradient(100deg, rgba(255, 255, 255, 0.2), transparent);
  transform: rotate(-5deg);
}

.sample-walnut {
  top: 40px;
  right: 26px;
  z-index: 3;
  background-color: #9b6848;
  background-image: repeating-linear-gradient(94deg, transparent 0 9px, rgba(44, 28, 19, 0.18) 10px, transparent 12px 23px);
  transform: rotate(3deg);
}

.sample-walnut small,
.sample-walnut b,
.sample-forest small,
.sample-forest b {
  color: rgba(255, 255, 255, 0.82);
}

.sample-sand {
  top: 137px;
  left: 45px;
  z-index: 1;
  background-color: #d8c9ad;
  background-image: repeating-linear-gradient(4deg, transparent 0 11px, rgba(93, 77, 54, 0.08) 12px, transparent 13px 24px);
  transform: rotate(3deg);
}

.sample-forest {
  top: 145px;
  right: 38px;
  z-index: 4;
  border-color: rgba(255, 255, 255, 0.24);
  background: #315446;
  transform: rotate(-3deg);
}

.material-caption {
  position: absolute;
  right: 24px;
  bottom: 20px;
  left: 24px;
  display: flex;
  align-items: flex-end;
  gap: 14px;
  padding-top: 13px;
  border-top: 1px solid rgba(255, 255, 255, 0.28);
  color: #fff;
}

.material-caption > b {
  font-family: Georgia, serif;
  font-size: 27px;
  font-weight: 400;
  line-height: 1;
}

.material-caption > span {
  color: rgba(255, 255, 255, 0.84);
  font-size: 11px;
  letter-spacing: 0.06em;
  line-height: 1.45;
}

.material-caption small {
  color: rgba(255, 255, 255, 0.54);
  font-size: 9px;
}

.survey-note {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr) auto;
  gap: 22px;
  align-items: center;
  padding: 18px 24px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  border-left: 1px solid var(--line);
  background: var(--sheet-2);
}

.survey-note > span {
  color: var(--forest);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.survey-note > p {
  margin: 0;
  color: var(--muted);
  font-size: 12.5px;
}

.survey-note > i {
  color: var(--faint);
  font-family: Georgia, serif;
  font-size: 8px;
  font-style: normal;
  letter-spacing: 0.14em;
}

/* Form layout */
.survey-form {
  margin-top: 34px;
}

.survey-layout {
  display: grid;
  grid-template-columns: 246px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

.survey-aside {
  position: sticky;
  top: 22px;
}

.aside-panel {
  padding: 26px 20px 18px;
  border-top: 4px solid var(--forest);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  border-left: 1px solid var(--line);
  background: var(--sheet);
  box-shadow: 0 8px 30px rgba(48, 40, 29, 0.055);
}

.aside-kicker {
  margin: 0 0 7px;
  color: var(--clay);
  font-family: Georgia, serif;
  font-size: 9px;
  letter-spacing: 0.2em;
}

.aside-panel h2 {
  margin: 0;
  color: var(--ink);
  font-family: "Songti SC", "STSong", Georgia, serif;
  font-size: 23px;
  letter-spacing: 0.02em;
}

.aside-sub {
  margin: 5px 0 20px;
  color: var(--faint);
  font-size: 11.5px;
}

.step-nav {
  display: grid;
  border-top: 1px solid var(--line);
}

.step-nav a {
  position: relative;
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) 18px;
  gap: 8px;
  align-items: center;
  min-height: 47px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  transition: color 0.18s ease, padding-left 0.18s ease, background-color 0.18s ease;
}

.step-nav a:hover,
.step-nav a.is-active {
  padding-left: 5px;
  color: var(--ink);
  background: var(--sheet-2);
}

.step-nav a.is-active::before {
  content: "";
  position: absolute;
  top: 11px;
  bottom: 11px;
  left: -20px;
  width: 3px;
  background: var(--clay);
}

.step-nav .num {
  color: var(--clay);
  font-family: Georgia, serif;
  font-size: 10px;
  letter-spacing: 0.08em;
}

.step-nav .lbl {
  font-size: 13px;
  font-weight: 650;
}

.step-nav .tick {
  color: transparent;
  font-size: 12px;
  font-weight: 800;
  transition: color 0.18s ease;
}

.step-nav a.is-done .tick {
  color: var(--ok);
}

.aside-progress {
  margin-top: 22px;
}

.aside-progress .row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 9px;
  color: var(--muted);
  font-size: 11px;
}

.aside-progress .row b {
  color: var(--forest);
  font-family: Georgia, serif;
  font-size: 12px;
}

.aside-progress .track {
  height: 3px;
  overflow: hidden;
  background: var(--paper-deep);
}

.aside-progress .bar {
  width: 0;
  height: 100%;
  background: var(--clay);
  transition: width 0.24s var(--ease);
}

.aside-foot {
  margin: 21px 0 0;
  padding-top: 13px;
  border-top: 1px solid var(--line);
  color: var(--faint);
  font-family: Georgia, serif;
  font-size: 7.5px;
  letter-spacing: 0.16em;
}

.form-stack {
  display: grid;
  gap: 18px;
  min-width: 0;
}

.question-section {
  position: relative;
  scroll-margin-top: 24px;
  padding: 34px 38px 38px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--ink);
  background: var(--sheet);
  box-shadow: 0 8px 30px rgba(48, 40, 29, 0.045);
}

.question-section::after {
  content: "";
  position: absolute;
  top: 17px;
  right: 19px;
  width: 5px;
  height: 5px;
  border: 1px solid var(--line-dark);
  border-radius: 50%;
}

.section-title {
  display: flex;
  align-items: flex-start;
  gap: 17px;
  margin-bottom: 28px;
  padding-bottom: 21px;
  border-bottom: 1px solid var(--line-dark);
}

.section-title > .badge {
  flex: 0 0 42px;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid var(--forest);
  border-radius: 50%;
  color: var(--forest);
  font-family: Georgia, serif;
  font-size: 11px;
  letter-spacing: 0.08em;
}

.section-title h2 {
  margin: 0;
  color: var(--ink);
  font-family: "Songti SC", "STSong", Georgia, serif;
  font-size: 24px;
  letter-spacing: 0.02em;
  line-height: 1.25;
}

.section-title p {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 12.5px;
}

.basic-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 24px;
}

.field {
  display: block;
  margin: 0;
  padding: 17px 0;
  border-top: 1px solid var(--line);
}

.section-title + .field,
.section-title + .basic-grid .field:nth-child(-n+2) {
  border-top: 0;
}

.field > span,
.field > legend {
  display: block;
  margin: 0 0 9px;
  padding: 0;
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
}

.field > span em,
.field > legend em {
  margin-left: 4px;
  color: var(--danger);
  font-style: normal;
}

input:not([type="radio"]):not([type="checkbox"]),
textarea,
select {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-sm);
  outline: 0;
  background: #fffefa;
  color: var(--ink);
  transition: border-color 0.16s ease, box-shadow 0.16s ease, background-color 0.16s ease;
}

input:not([type="radio"]):not([type="checkbox"]) {
  padding: 0 14px;
}

textarea {
  min-height: 98px;
  padding: 12px 14px;
  line-height: 1.75;
  resize: vertical;
}

input::placeholder,
textarea::placeholder {
  color: #aaa499;
}

input:not([type="radio"]):not([type="checkbox"]):hover,
textarea:hover {
  border-color: #a99f8e;
}

input:not([type="radio"]):not([type="checkbox"]):focus,
textarea:focus {
  border-color: var(--forest);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(24, 55, 44, 0.09);
}

input.invalid,
textarea.invalid {
  border-color: var(--danger) !important;
  background: #fff9f7 !important;
  box-shadow: 0 0 0 3px rgba(163, 61, 45, 0.1) !important;
}

.field-foot {
  min-height: 17px;
  margin-top: 5px;
  text-align: right;
}

.field-counter {
  color: var(--faint);
  font-family: Georgia, serif;
  font-size: 9px;
  letter-spacing: 0.05em;
}

.field-counter.near {
  color: var(--clay);
}

fieldset.field {
  min-width: 0;
  padding-right: 0;
  padding-left: 0;
  border-right: 0;
  border-bottom: 0;
  border-left: 0;
}

.choice-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.choice {
  position: relative;
  min-width: 0;
  cursor: pointer;
}

.choice input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

.choice > span {
  min-height: 43px;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 8px 11px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: #fffefa;
  color: var(--ink-soft);
  font-size: 12.5px;
  font-weight: 600;
  line-height: 1.35;
  transition: border-color 0.16s ease, background-color 0.16s ease, color 0.16s ease;
}

.choice > span::before {
  content: "";
  flex: 0 0 14px;
  width: 14px;
  height: 14px;
  border: 1px solid #aaa294;
  background: #fff;
  box-shadow: inset 0 0 0 3px #fff;
}

.choice input[type="radio"] + span::before {
  border-radius: 50%;
}

.choice:hover > span {
  border-color: var(--forest);
  color: var(--ink);
}

.choice input:focus-visible + span {
  outline: 3px solid rgba(24, 55, 44, 0.13);
  outline-offset: 1px;
}

.choice input:checked + span {
  border-color: var(--forest);
  background: var(--forest-soft);
  color: var(--forest);
}

.choice input:checked + span::before {
  border-color: var(--forest);
  background: var(--forest);
}

.submit-bar {
  position: sticky;
  bottom: 16px;
  z-index: 35;
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  margin: 20px 0 0 270px;
  padding: 14px 16px 14px 19px;
  border: 1px solid rgba(191, 182, 166, 0.9);
  background: rgba(251, 250, 246, 0.95);
  box-shadow: var(--shadow-float);
  backdrop-filter: blur(12px);
}

.submit-info {
  display: flex;
  align-items: center;
  gap: 13px;
  min-width: 0;
}

.submit-ring {
  --p: 0;
  flex: 0 0 48px;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: conic-gradient(var(--clay) calc(var(--p) * 1%), var(--paper-deep) 0);
  position: relative;
}

.submit-ring::before {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  background: var(--sheet);
}

.submit-ring > span {
  position: relative;
  z-index: 1;
  color: var(--forest);
  font-family: Georgia, serif;
  font-size: 9px;
  font-weight: 700;
}

.submit-info strong {
  display: block;
  color: var(--ink);
  font-size: 14px;
}

.submit-info > div > span {
  display: block;
  margin-top: 1px;
  color: var(--muted);
  font-size: 11px;
}

.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 19px;
  border: 1px solid var(--forest);
  border-radius: 2px;
  background: var(--forest);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: transform 0.16s ease, background-color 0.16s ease, border-color 0.16s ease;
}

.button:hover {
  border-color: var(--forest-2);
  background: var(--forest-2);
  transform: translateY(-1px);
}

.button:active {
  transform: translateY(0);
}

.button:disabled {
  cursor: wait;
  opacity: 0.62;
  transform: none;
}

.button.primary {
  min-width: 180px;
  min-height: 52px;
}

.button-icon {
  width: 17px;
  height: 17px;
  transition: transform 0.16s ease;
}

.button.primary:hover .button-icon {
  transform: translateX(3px);
}

.button.secondary {
  border-color: var(--clay);
  background: var(--clay);
}

.button.secondary:hover {
  border-color: var(--clay-dark);
  background: var(--clay-dark);
}

.button.ghost {
  border-color: var(--line-dark);
  background: transparent;
  color: var(--ink-soft);
}

.button.ghost:hover {
  border-color: var(--forest);
  background: var(--forest-soft);
  color: var(--forest);
}

.button.full {
  width: 100%;
}

.alert {
  padding: 14px 17px;
  border-left: 3px solid var(--danger);
  background: var(--danger-soft);
  color: var(--danger);
}

.alert p {
  margin: 2px 0;
  font-size: 13px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-left: 270px;
  padding: 22px 3px 0;
  color: var(--faint);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 45;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-dark);
  border-radius: 50%;
  background: var(--sheet);
  color: var(--forest);
  box-shadow: 0 8px 22px rgba(40, 34, 25, 0.12);
  cursor: pointer;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease, border-color 0.18s ease;
}

.to-top.show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.to-top:hover {
  border-color: var(--forest);
}

.to-top svg {
  width: 18px;
  height: 18px;
}

/* Generic states */
.panel {
  border: 1px solid var(--line);
  border-top: 3px solid var(--forest);
  border-radius: var(--radius);
  background: var(--sheet);
  box-shadow: var(--shadow-sheet);
}

.narrow {
  width: min(540px, calc(100% - 28px));
  margin: 72px auto;
  padding: 38px;
}

.success-panel {
  text-align: center;
}

.success-panel h1 {
  margin: 0 0 11px;
  color: var(--ink);
  font-family: "Songti SC", "STSong", Georgia, serif;
  font-size: 28px;
}

.success-panel p {
  margin: 5px 0;
  color: var(--muted);
}

.success-panel .button {
  margin-top: 20px;
}

.status-mark {
  width: 62px;
  height: 62px;
  display: grid;
  place-items: center;
  margin: 0 auto 19px;
  border: 1px solid var(--forest);
  border-radius: 50%;
  color: var(--forest);
  font-family: Georgia, serif;
  font-size: 26px;
  animation: pop 0.42s var(--ease);
}

@keyframes pop {
  0% { transform: scale(0.75); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

/* Login */
.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-panel {
  width: min(430px, 100%);
  padding: 35px;
}

.login-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 25px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.login-brand .mark,
.admin-brand .mark {
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--forest);
  color: #fff;
  font-family: Georgia, serif;
  font-weight: 700;
}

.login-brand .mark {
  width: 42px;
  height: 42px;
  font-size: 20px;
}

.login-brand b {
  color: var(--ink);
  font-size: 17px;
}

.login-brand span {
  display: block;
  color: var(--muted);
  font-size: 11.5px;
}

.login-panel h1 {
  margin: 0 0 6px;
  color: var(--ink);
  font-family: "Songti SC", "STSong", Georgia, serif;
  font-size: 25px;
}

.login-panel .login-hint {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 12.5px;
}

/* Admin */
.admin-page {
  background: var(--paper);
}

.admin-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 62px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 27px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  background: var(--forest);
  color: #fff;
}

.admin-brand {
  display: flex;
  align-items: center;
  gap: 11px;
  color: #fff;
  font-size: 16px;
  font-weight: 750;
}

.admin-brand .mark {
  width: 32px;
  height: 32px;
  border: 1px solid rgba(255, 255, 255, 0.38);
  font-size: 15px;
}

.admin-user {
  display: flex;
  align-items: center;
  gap: 14px;
}

.admin-user .who {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 13px;
}

.admin-user .avatar {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.32);
  border-radius: 50%;
  color: #fff;
  font-size: 11px;
}

.admin-user form {
  margin: 0;
}

.admin-user button {
  min-height: 34px;
  padding: 0 13px;
  border: 1px solid rgba(255, 255, 255, 0.26);
  border-radius: 2px;
  background: transparent;
  color: #fff;
  cursor: pointer;
  font-size: 12px;
}

.admin-user button:hover {
  background: rgba(255, 255, 255, 0.1);
}

.admin-layout {
  width: min(1220px, calc(100% - 34px));
  margin: 28px auto 56px;
}

.admin-title {
  margin-bottom: 19px;
  padding-left: 13px;
  border-left: 3px solid var(--clay);
}

.admin-title h1 {
  margin: 0;
  color: var(--ink);
  font-family: "Songti SC", "STSong", Georgia, serif;
  font-size: 24px;
}

.admin-title p {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 12.5px;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(138px, 1fr));
  gap: 10px;
  margin-bottom: 18px;
}

.stat-card {
  position: relative;
  min-height: 104px;
  padding: 16px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--forest);
  background: var(--sheet);
}

.stat-card.is-accent {
  border-top-color: var(--clay);
}

.stat-card span {
  color: var(--muted);
  font-size: 11.5px;
  font-weight: 600;
}

.stat-card strong {
  display: block;
  margin-top: 10px;
  color: var(--ink);
  font-family: Georgia, serif;
  font-size: 29px;
  font-weight: 400;
}

.panel.admin-panel {
  padding: 20px;
}

.filter-bar {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) 155px 155px auto auto auto;
  gap: 10px;
  align-items: end;
  margin-bottom: 18px;
}

.filter-bar label span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 11.5px;
  font-weight: 700;
}

.filter-bar input {
  min-height: 44px;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
}

table {
  width: 100%;
  min-width: 780px;
  border-collapse: collapse;
  background: var(--sheet);
}

th,
td {
  padding: 13px 15px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
}

th {
  background: var(--sheet-2);
  color: var(--muted);
  font-size: 11.5px;
  font-weight: 750;
}

tbody tr:hover {
  background: var(--forest-soft);
}

tr:last-child td {
  border-bottom: 0;
}

td .name-cell {
  color: var(--ink);
  font-weight: 700;
}

.table-link {
  color: var(--clay);
  font-size: 12.5px;
  font-weight: 700;
}

.table-link:hover {
  color: var(--clay-dark);
}

.empty-cell {
  padding: 40px 16px;
  color: var(--muted);
  text-align: center;
}

.pagination {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 16px;
}

.pagination a,
.pagination span,
.pagination strong {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  padding: 0 12px;
  border: 1px solid var(--line);
  background: var(--sheet);
  font-size: 12px;
  font-weight: 600;
}

.pagination a:hover {
  border-color: var(--forest);
}

.pagination span {
  color: var(--faint);
}

.pagination strong {
  border-color: transparent;
  background: transparent;
  color: var(--muted);
}

.admin-actions {
  margin-bottom: 13px;
}

.detail-head {
  padding: 24px;
}

.detail-head h1 {
  margin: 0 0 19px;
  color: var(--ink);
  font-family: "Songti SC", "STSong", Georgia, serif;
  font-size: 24px;
}

.meta-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
}

.meta-grid div,
.remark-box {
  padding: 13px;
  border: 1px solid var(--line);
  background: var(--sheet-2);
}

.meta-grid span,
.remark-box span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 10.5px;
  font-weight: 700;
}

.meta-grid strong {
  color: var(--ink);
  overflow-wrap: anywhere;
}

.remark-box {
  margin-top: 10px;
}

.remark-box p {
  margin: 0;
}

.detail-section {
  margin-top: 15px;
  padding: 24px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--forest);
  background: var(--sheet);
}

.detail-section h2 {
  margin: 0 0 7px;
  color: var(--ink);
  font-family: "Songti SC", "STSong", Georgia, serif;
  font-size: 19px;
}

.detail-section dl {
  margin: 0;
}

.answer-row {
  display: grid;
  grid-template-columns: minmax(190px, 290px) minmax(0, 1fr);
  gap: 18px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.answer-row:first-of-type {
  border-top: 0;
}

.answer-row dt {
  color: var(--muted);
  font-size: 12.5px;
  font-weight: 650;
}

.answer-row dd {
  margin: 0;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.muted {
  color: var(--faint);
}

@media (max-width: 1060px) {
  .hero-editorial {
    grid-template-columns: minmax(0, 1fr) 310px;
    gap: 36px;
    padding: 46px 38px;
  }

  .survey-layout {
    grid-template-columns: 1fr;
  }

  .survey-aside {
    position: static;
  }

  .aside-panel {
    padding: 18px;
  }

  .aside-panel h2,
  .aside-sub,
  .aside-foot {
    display: none;
  }

  .step-nav {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 6px;
    border-top: 0;
  }

  .step-nav a {
    min-height: 41px;
    padding: 0 8px;
    border: 1px solid var(--line);
  }

  .step-nav a:hover,
  .step-nav a.is-active {
    padding-left: 8px;
  }

  .step-nav a.is-active::before {
    inset: auto 7px -1px;
    width: auto;
    height: 2px;
  }

  .aside-progress {
    margin-top: 14px;
  }

  .submit-bar,
  .site-footer {
    margin-left: 0;
  }

  .filter-bar {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .hero-editorial {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .material-board {
    width: min(360px, 100%);
    margin: 0 auto;
  }

  .survey-note {
    grid-template-columns: 90px minmax(0, 1fr);
  }

  .survey-note > i {
    display: none;
  }

  .choice-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .meta-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  body {
    font-size: 14px;
  }

  .survey-page,
  .admin-layout {
    width: calc(100% - 20px);
  }

  .survey-page {
    padding-top: 10px;
  }

  .brand-masthead {
    min-height: 54px;
    padding-bottom: 10px;
  }

  .brand-stamp {
    width: 34px;
    height: 34px;
    font-size: 19px;
  }

  .brand-words b {
    font-size: 15px;
  }

  .brand-masthead > p {
    font-size: 8px;
  }

  .brand-masthead > p span,
  .brand-masthead > p span + * {
    display: none;
  }

  .hero-editorial {
    gap: 34px;
    padding: 34px 21px 38px;
  }

  .hero-kicker {
    align-items: flex-start;
    flex-direction: column;
    gap: 7px;
    margin-bottom: 18px;
  }

  .hero-kicker::before {
    display: none;
  }

  .hero-editorial h1 {
    font-size: 33px;
    letter-spacing: -0.06em;
  }

  .hero-lead {
    margin-top: 19px;
    font-size: 13.5px;
  }

  .hero-facts {
    display: grid;
    grid-template-columns: 1fr;
    margin-top: 24px;
  }

  .hero-facts span {
    min-width: 0;
    padding: 9px 0;
  }

  .hero-facts span + span {
    padding-left: 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .material-board {
    min-height: 304px;
    padding: 18px;
    box-shadow: 9px 10px 0 var(--paper-deep);
  }

  .sample {
    width: 116px;
    height: 101px;
  }

  .sample-oak {
    left: 19px;
  }

  .sample-walnut {
    right: 19px;
  }

  .sample-sand {
    top: 124px;
    left: 34px;
  }

  .sample-forest {
    top: 132px;
    right: 29px;
  }

  .survey-note {
    display: block;
    padding: 15px 17px;
  }

  .survey-note > p {
    margin-top: 4px;
    line-height: 1.65;
  }

  .survey-form {
    margin-top: 18px;
  }

  .aside-panel {
    padding: 13px;
  }

  .aside-kicker {
    margin-bottom: 10px;
  }

  .step-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .step-nav a {
    grid-template-columns: 24px minmax(0, 1fr);
    gap: 5px;
  }

  .step-nav .tick {
    display: none;
  }

  .question-section,
  .panel,
  .detail-section,
  .detail-head,
  .narrow {
    padding: 22px 18px 25px;
  }

  .narrow {
    margin: 36px auto;
  }

  .section-title {
    gap: 13px;
    margin-bottom: 17px;
    padding-bottom: 17px;
  }

  .section-title > .badge {
    flex-basis: 37px;
    width: 37px;
    height: 37px;
  }

  .section-title h2 {
    font-size: 21px;
  }

  .basic-grid,
  .choice-grid,
  .filter-bar,
  .meta-grid,
  .answer-row {
    grid-template-columns: 1fr;
  }

  .section-title + .basic-grid .field:nth-child(2) {
    border-top: 1px solid var(--line);
  }

  .submit-bar {
    bottom: 9px;
    min-height: auto;
    padding: 11px;
  }

  .submit-info {
    gap: 9px;
  }

  .submit-ring {
    flex-basis: 42px;
    width: 42px;
    height: 42px;
  }

  .submit-info > div > span {
    display: none;
  }

  .submit-bar .button {
    min-width: 136px;
    min-height: 46px;
    padding: 0 14px;
  }

  .site-footer {
    flex-direction: column;
    gap: 4px;
  }

  .to-top {
    right: 12px;
    bottom: 92px;
  }

  .admin-header {
    height: 56px;
    padding: 0 14px;
  }

  .admin-user .who {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

/* ---------- 万象品牌视觉：深湖蓝 · 桦木色 · 材料切面 ---------- */
body {
  background-color: var(--paper);
  background-image:
    radial-gradient(circle at 9% 2%, rgba(255, 255, 255, 0.95), transparent 24%),
    radial-gradient(circle at 92% 18%, rgba(41, 144, 204, 0.09), transparent 26%),
    linear-gradient(rgba(7, 93, 168, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(7, 93, 168, 0.018) 1px, transparent 1px);
  background-size: auto, auto, 28px 28px, 28px 28px;
}

body::before {
  background: linear-gradient(110deg, rgba(255, 255, 255, 0.34), transparent 38%, rgba(7, 93, 168, 0.025));
}

.progressbar {
  height: 4px;
}

.progressbar__fill {
  background: linear-gradient(90deg, #4bb1dd, var(--clay));
  box-shadow: 0 0 16px rgba(75, 177, 221, 0.45);
}

.brand-masthead {
  min-height: 72px;
  border-bottom-color: rgba(7, 93, 168, 0.18);
}

.brand-lockup {
  gap: 13px;
}

.brand-stamp,
.login-brand .mark,
.admin-brand .mark {
  border-radius: 13px 13px 3px 13px;
  background: linear-gradient(145deg, #1484c9, #075da8 62%, #06477c);
  box-shadow: 0 7px 18px rgba(7, 93, 168, 0.22);
  font-family: "Avenir Next", Arial, sans-serif;
}

.brand-stamp {
  width: 42px;
  height: 42px;
  font-size: 19px;
  font-weight: 800;
}

.brand-words b {
  color: var(--ink);
  font-size: 18px;
  font-weight: 850;
  letter-spacing: 0.15em;
}

.brand-words small {
  color: var(--forest);
  font-family: "Avenir Next", Arial, sans-serif;
  font-weight: 750;
  letter-spacing: 0.17em;
}

.brand-masthead > p {
  color: var(--muted);
  font-family: "Avenir Next", "PingFang SC", sans-serif;
  font-weight: 650;
}

.hero-editorial {
  isolation: isolate;
  grid-template-columns: minmax(0, 1fr) 350px;
  gap: 50px;
  min-height: 512px;
  margin-top: 18px;
  padding: 62px 58px;
  border: 0;
  border-radius: 26px;
  background:
    radial-gradient(circle at 76% 20%, rgba(77, 184, 224, 0.34), transparent 31%),
    radial-gradient(circle at 12% 100%, rgba(7, 57, 103, 0.66), transparent 38%),
    linear-gradient(122deg, #064d88 0%, #075da8 47%, #0874b8 100%);
  box-shadow: 0 28px 80px rgba(9, 56, 94, 0.2);
}

.hero-editorial::before {
  content: "";
  position: absolute;
  right: 210px;
  bottom: -295px;
  z-index: -1;
  width: 560px;
  height: 560px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  box-shadow:
    0 0 0 72px rgba(255, 255, 255, 0.035),
    0 0 0 144px rgba(255, 255, 255, 0.025);
}

.hero-editorial::after {
  content: "WANXIANG / 01";
  right: 24px;
  bottom: 18px;
  color: rgba(255, 255, 255, 0.46);
  font-family: "Avenir Next", Arial, sans-serif;
  font-weight: 650;
}

.hero-copy {
  animation: wx-reveal 0.7s var(--ease) both;
}

.hero-kicker {
  margin-bottom: 24px;
  color: #f0cf9e;
  font-size: 12px;
  letter-spacing: 0.1em;
}

.hero-kicker::before {
  background: #f0cf9e;
}

.hero-kicker span {
  color: #bde9fa;
  font-family: "Avenir Next", Arial, sans-serif;
  font-weight: 750;
}

.hero-editorial h1 {
  color: #fff;
  font-family: "Avenir Next", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: clamp(38px, 4.35vw, 58px);
  font-weight: 850;
  letter-spacing: -0.045em;
  line-height: 1.2;
}

.hero-editorial h1 em {
  color: #fff;
}

.hero-editorial h1 em::after {
  right: 0;
  bottom: -3px;
  left: 0;
  height: 9px;
  border-radius: 999px;
  background: linear-gradient(90deg, #d7ab6e, #91d9ee);
  opacity: 0.92;
}

.hero-lead {
  max-width: 610px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 15px;
  line-height: 1.95;
}

.hero-facts {
  border-color: rgba(255, 255, 255, 0.2);
}

.hero-facts span + span {
  border-left-color: rgba(255, 255, 255, 0.18);
}

.hero-facts b {
  color: #f0cf9e;
}

.hero-facts i {
  color: rgba(255, 255, 255, 0.86);
}

.material-board {
  min-height: 356px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.26);
  border-radius: 22px;
  background:
    linear-gradient(150deg, rgba(255, 255, 255, 0.2), transparent 45%),
    rgba(3, 42, 78, 0.58);
  box-shadow: 18px 20px 0 rgba(2, 43, 80, 0.18), 0 26px 48px rgba(2, 35, 67, 0.24);
  backdrop-filter: blur(8px);
  animation: wx-reveal 0.75s 0.12s var(--ease) both;
}

.material-board::before {
  top: 20px;
  right: -20px;
  width: 210px;
  height: 12px;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, rgba(145, 217, 238, 0.82));
  transform: rotate(-8deg);
}

.material-board::after {
  content: "W";
  position: absolute;
  top: 18px;
  left: 22px;
  color: rgba(255, 255, 255, 0.07);
  font-family: Arial, sans-serif;
  font-size: 196px;
  font-weight: 900;
  letter-spacing: -0.16em;
  line-height: 1;
}

.sample {
  width: 126px;
  height: 120px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 12px 12px 3px 12px;
  box-shadow: 10px 12px 24px rgba(0, 25, 49, 0.24);
}

.sample-oak {
  top: 42px;
  left: 30px;
  background-color: #e0c091;
}

.sample-walnut {
  top: 53px;
  right: 28px;
  background-color: #4d9dcc;
  background-image: repeating-linear-gradient(94deg, transparent 0 12px, rgba(5, 66, 111, 0.16) 13px, transparent 15px 28px);
}

.sample-sand {
  top: 152px;
  left: 49px;
  background-color: #f0e3ca;
}

.sample-forest {
  top: 163px;
  right: 42px;
  background: linear-gradient(145deg, #0879bb, #07548f);
}

.sample-walnut small,
.sample-walnut b,
.sample-forest small,
.sample-forest b {
  color: rgba(255, 255, 255, 0.9);
}

.material-caption {
  z-index: 6;
  border-top-color: rgba(255, 255, 255, 0.24);
}

.survey-note {
  margin-top: 10px;
  border: 1px solid rgba(7, 93, 168, 0.13);
  border-radius: 15px;
  background: rgba(255, 255, 255, 0.68);
  box-shadow: 0 10px 28px rgba(15, 66, 103, 0.045);
  backdrop-filter: blur(10px);
}

.survey-note > span {
  color: var(--forest);
}

.survey-form {
  margin-top: 28px;
}

.aside-panel,
.question-section,
.panel,
.detail-section,
.detail-head,
.stat-card,
.meta-grid div,
.remark-box {
  border-color: var(--line);
  border-radius: var(--radius);
}

.aside-panel {
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--line);
  box-shadow: var(--shadow-sheet);
}

.aside-panel::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 5px;
  background: linear-gradient(90deg, var(--forest), #45acd9 72%, var(--clay));
}

.aside-panel h2,
.section-title h2,
.success-panel h1,
.login-panel h1,
.admin-title h1,
.detail-head h1,
.detail-section h2 {
  font-family: "Avenir Next", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 800;
  letter-spacing: -0.025em;
}

.question-section {
  overflow: hidden;
  border-top: 1px solid var(--line);
  box-shadow: 0 12px 38px rgba(13, 58, 94, 0.055);
}

.question-section::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: linear-gradient(180deg, var(--forest), #55b6da 62%, transparent);
}

.question-section::after {
  top: 20px;
  right: 22px;
  width: 7px;
  height: 7px;
  border: 0;
  background: var(--clay);
}

.section-title > .badge {
  border-color: transparent;
  border-radius: 13px 13px 3px 13px;
  background: var(--forest-soft);
  color: var(--forest);
  font-family: "Avenir Next", Arial, sans-serif;
  font-weight: 800;
}

input:not([type="radio"]):not([type="checkbox"]),
textarea,
select {
  border-color: var(--line-dark);
  border-radius: 10px;
  background: #fbfdff;
}

input:not([type="radio"]):not([type="checkbox"]):focus,
textarea:focus {
  box-shadow: 0 0 0 4px rgba(7, 93, 168, 0.1);
}

.choice > span {
  border-radius: 10px;
  background: #fbfdff;
}

.choice input:checked + span {
  box-shadow: inset 0 0 0 1px rgba(7, 93, 168, 0.08);
}

.choice input:focus-visible + span {
  outline-color: rgba(7, 93, 168, 0.16);
}

.submit-bar {
  border-color: rgba(136, 169, 190, 0.5);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.93);
}

.button {
  border-radius: 10px;
  box-shadow: 0 8px 18px rgba(7, 93, 168, 0.14);
}

.button:hover {
  box-shadow: 0 11px 24px rgba(7, 93, 168, 0.2);
}

.button.ghost {
  box-shadow: none;
}

.to-top {
  border-radius: 13px 13px 3px 13px;
}

.admin-header {
  background: linear-gradient(100deg, #064c86, #075da8 58%, #0879b9);
}

.admin-brand .mark {
  background: rgba(255, 255, 255, 0.14);
  box-shadow: none;
}

.stat-card {
  border-top-color: var(--forest);
}

@keyframes wx-reveal {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 1060px) {
  .hero-editorial {
    grid-template-columns: minmax(0, 1fr) 316px;
    gap: 34px;
    padding: 48px 40px;
  }
}

@media (max-width: 820px) {
  .hero-editorial {
    grid-template-columns: 1fr;
  }

  .material-board {
    width: min(370px, 100%);
  }
}

@media (max-width: 620px) {
  .brand-masthead {
    min-height: 58px;
  }

  .brand-stamp {
    width: 35px;
    height: 35px;
    border-radius: 11px 11px 3px 11px;
    font-size: 16px;
  }

  .brand-words b {
    font-size: 15px;
  }

  .hero-editorial {
    gap: 31px;
    margin-top: 10px;
    padding: 35px 22px 40px;
    border-radius: 19px;
  }

  .hero-editorial h1 {
    font-size: clamp(31px, 9.6vw, 37px);
    line-height: 1.23;
  }

  .hero-editorial h1 em::after {
    bottom: -1px;
    height: 6px;
  }

  .hero-kicker {
    color: #f0cf9e;
  }

  .hero-facts span + span {
    border-top-color: rgba(255, 255, 255, 0.18);
  }

  .material-board {
    min-height: 312px;
    border-radius: 17px;
    box-shadow: 10px 11px 0 rgba(2, 43, 80, 0.17), 0 20px 38px rgba(2, 35, 67, 0.2);
  }

  .material-board::after {
    font-size: 166px;
  }

  .sample {
    width: 116px;
    height: 103px;
  }

  .sample-oak {
    top: 35px;
    left: 18px;
  }

  .sample-walnut {
    top: 43px;
    right: 17px;
  }

  .sample-sand {
    top: 126px;
    left: 33px;
  }

  .sample-forest {
    top: 136px;
    right: 28px;
  }

  .survey-note {
    border-radius: 13px;
  }

  .aside-panel,
  .question-section,
  .panel,
  .detail-section,
  .detail-head {
    border-radius: 14px;
  }

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

  .submit-bar {
    border-radius: 15px;
  }
}

/* ---------- 2026-08-14 v2 · Material laboratory concept ---------- */
:root {
  --paper: #ffffff;
  --paper-deep: #edf2f7;
  --sheet: #ffffff;
  --sheet-2: #f7f9fc;
  --ink: #0b315f;
  --ink-soft: #284865;
  --muted: #687c91;
  --faint: #96a6b6;
  --line: #dbe4ed;
  --line-dark: #bccddd;
  --forest: #075db7;
  --forest-2: #034b98;
  --forest-soft: #edf5fd;
  --clay: #c68a42;
  --clay-dark: #9c682d;
  --clay-soft: #f8efe4;
  --radius: 8px;
  --radius-sm: 6px;
  --shadow-sheet: 0 12px 36px rgba(18, 57, 94, 0.055);
  --shadow-float: 0 14px 36px rgba(15, 55, 94, 0.13);
}

body,
.admin-page {
  background: #fff;
}

body::before {
  display: none;
}

.survey-page {
  width: min(1248px, calc(100% - 80px));
  padding-top: 0;
}

.brand-masthead {
  position: sticky;
  top: 0;
  z-index: 60;
  width: 100vw;
  min-height: 76px;
  margin-left: calc(50% - 50vw);
  padding: 0 36px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
}

.brand-lockup {
  gap: 12px;
}

.brand-stamp,
.login-brand .mark,
.admin-brand .mark {
  border-radius: 9px;
  background: #075db7;
  box-shadow: none;
}

.brand-stamp {
  width: 36px;
  height: 36px;
  font-size: 17px;
}

.brand-words b {
  font-size: 18px;
  letter-spacing: 0.14em;
}

.brand-words small {
  margin-top: 4px;
  color: #075db7;
  font-size: 7.5px;
  letter-spacing: 0.2em;
}

.brand-masthead > p {
  color: #62778d;
  font-size: 11px;
  letter-spacing: 0.11em;
}

.hero-editorial {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(500px, 1.08fr);
  grid-template-areas:
    "copy media"
    "facts media";
  grid-template-rows: auto auto;
  gap: 0 34px;
  align-content: center;
  align-items: center;
  min-height: 0;
  height: 510px;
  margin: 0;
  padding: 53px 8px 30px;
  overflow: visible;
  border: 0;
  border-radius: 0;
  background: #fff;
  box-shadow: none;
}

.hero-editorial::before,
.hero-editorial::after {
  display: none;
}

.hero-copy {
  grid-area: copy;
  align-self: auto;
  padding-bottom: 24px;
  animation: studio-reveal 0.58s var(--ease) both;
}

.hero-editorial h1 {
  margin: 0;
  color: #0a478c;
  font-family: "Avenir Next", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: clamp(46px, 4.65vw, 66px);
  font-weight: 850;
  letter-spacing: -0.055em;
  line-height: 1.2;
}

.hero-editorial h1 em {
  color: #0a478c;
}

.hero-editorial h1 em::after {
  right: 0;
  bottom: -7px;
  left: 0;
  height: 4px;
  border-radius: 0;
  background: #78cbe8;
  opacity: 1;
}

.hero-lead {
  max-width: 590px;
  margin-top: 30px;
  color: #526a82;
  font-size: 15px;
  line-height: 2;
}

.hero-material {
  grid-area: media;
  align-self: stretch;
  min-width: 0;
  display: grid;
  place-items: center;
  margin: -26px -62px -32px -12px;
  overflow: hidden;
  animation: studio-reveal 0.68s 0.08s var(--ease) both;
}

.hero-material picture {
  display: contents;
}

.hero-material img {
  width: 112%;
  max-width: none;
  height: 100%;
  max-height: 570px;
  display: block;
  object-fit: contain;
  object-position: center right;
  transform: translate(3%, -17%) scale(1.2);
  transform-origin: center;
}

.hero-facts {
  grid-area: facts;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 0;
  border-top: 1px solid var(--line-dark);
  border-bottom: 0;
  transform: translateY(-25px);
}

.hero-facts span {
  min-width: 0;
  gap: 11px;
  padding: 18px 18px 4px 0;
}

.hero-facts span + span {
  padding-left: 18px;
  border-left: 1px solid var(--line);
}

.hero-facts svg {
  flex: 0 0 25px;
  width: 25px;
  height: 25px;
  color: var(--forest);
}

.hero-facts i {
  color: var(--ink-soft);
  font-size: 12.5px;
  font-weight: 650;
}

.survey-note {
  grid-template-columns: 132px minmax(0, 1fr) auto;
  gap: 26px;
  min-height: 62px;
  margin: 0;
  padding: 14px 22px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #f9fbfd;
  box-shadow: none;
  backdrop-filter: none;
}

.survey-note > span {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--forest);
  letter-spacing: 0;
}

.survey-note > span svg {
  width: 21px;
  height: 21px;
}

.survey-note > span b {
  font-size: 13px;
  letter-spacing: 0.03em;
}

.survey-note > p {
  color: #66798d;
}

.survey-form {
  margin-top: 28px;
}

.survey-layout {
  grid-template-columns: 252px minmax(0, 1fr);
  gap: 28px;
}

.survey-aside {
  top: 96px;
}

.aside-panel {
  padding: 29px 20px 20px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 7px;
  box-shadow: none;
}

.aside-panel::before {
  display: none;
}

.aside-kicker {
  color: #8a9cb0;
  font-family: "Avenir Next", Arial, sans-serif;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.2em;
}

.aside-panel h2 {
  font-size: 24px;
}

.step-nav a {
  margin-right: -20px;
  margin-left: -20px;
  padding: 0 20px;
  border-bottom-color: var(--line);
}

.step-nav a:hover,
.step-nav a.is-active {
  padding-left: 24px;
  background: linear-gradient(90deg, #eef5fd, #f8fbfe);
}

.step-nav a.is-active::before {
  top: 0;
  bottom: 0;
  left: 0;
  width: 3px;
  background: var(--forest);
}

.step-nav .num {
  color: #2176c7;
  font-family: "Avenir Next", Arial, sans-serif;
}

.aside-progress .track {
  height: 3px;
  border-radius: 999px;
}

.aside-progress .bar {
  background: var(--forest);
}

.question-section {
  padding: 35px 38px 39px;
  overflow: visible;
  scroll-margin-top: 96px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fff;
  box-shadow: none;
}

.question-section::before,
.question-section::after {
  display: none;
}

.section-title {
  margin-bottom: 24px;
  padding-bottom: 23px;
  border-bottom-color: var(--line-dark);
}

.section-title > .badge {
  flex-basis: 46px;
  width: 46px;
  height: 46px;
  border-radius: 6px;
  background: #eef5fd;
  color: var(--forest);
  font-size: 12px;
}

.section-title h2 {
  color: var(--ink);
  font-size: 25px;
}

.section-title p {
  color: #77899c;
}

.field {
  padding: 18px 0;
  border-top-color: #e3eaf1;
}

.field > span,
.field > legend {
  margin-bottom: 10px;
  font-size: 14.5px;
}

input:not([type="radio"]):not([type="checkbox"]),
textarea,
select {
  min-height: 49px;
  border-color: #bdcddd;
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
}

textarea {
  min-height: 104px;
}

input:not([type="radio"]):not([type="checkbox"]):hover,
textarea:hover {
  border-color: #8ca8c1;
}

input:not([type="radio"]):not([type="checkbox"]):focus,
textarea:focus {
  border-color: var(--forest);
  box-shadow: 0 0 0 3px rgba(7, 93, 183, 0.1);
}

.choice-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px 12px;
}

.choice > span {
  min-height: 42px;
  padding: 8px 10px;
  border: 1px solid transparent;
  border-radius: 6px;
  background: transparent;
  font-size: 14px;
  font-weight: 600;
}

.choice > span::before {
  flex-basis: 16px;
  width: 16px;
  height: 16px;
  border-color: #a9bed1;
}

.choice:hover > span {
  border-color: #d4e1ec;
  background: #f7fafd;
}

.choice input:focus-visible + span {
  outline: 2px dashed #2d83d0;
  outline-offset: 1px;
}

.choice input:checked + span {
  border-color: #9fc2e4;
  background: #f2f7fd;
  color: #0a4f98;
}

.choice input:checked + span::before {
  border-color: var(--forest);
  background: var(--forest);
}

.submit-bar {
  min-height: 78px;
  margin: 20px 0 0;
  padding: 12px 22px;
  border: 1px solid #cbd8e4;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.97);
  box-shadow: var(--shadow-float);
}

.submit-ring {
  background: conic-gradient(var(--forest) calc(var(--p) * 1%), #e3ebf3 0);
}

.submit-ring::before {
  background: #fff;
}

.button {
  border-radius: 6px;
  box-shadow: none;
}

.button:hover {
  box-shadow: 0 8px 20px rgba(7, 93, 183, 0.14);
}

.button.primary {
  min-width: 190px;
}

.site-footer {
  margin-left: 0;
}

.panel,
.detail-section,
.detail-head,
.stat-card,
.meta-grid div,
.remark-box {
  border-radius: 7px;
}

@keyframes studio-reveal {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 1100px) {
  .survey-page {
    width: min(100% - 44px, 1040px);
  }

  .hero-editorial {
    grid-template-columns: minmax(0, 1fr) minmax(420px, 0.95fr);
  }

  .hero-material {
    margin-right: -34px;
  }

  .survey-layout {
    grid-template-columns: 1fr;
  }

  .survey-aside {
    position: static;
  }

  .aside-panel {
    padding: 18px;
  }

  .aside-panel h2,
  .aside-sub,
  .aside-foot {
    display: none;
  }

  .step-nav {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 6px;
    border-top: 0;
  }

  .step-nav a {
    margin: 0;
    padding: 0 10px;
    border: 1px solid var(--line);
  }

  .step-nav a:hover,
  .step-nav a.is-active {
    padding-left: 10px;
  }

  .step-nav a.is-active::before {
    inset: 0 auto 0 0;
    width: 3px;
    height: auto;
  }
}

@media (max-width: 820px) {
  .survey-page {
    width: calc(100% - 24px);
  }

  .hero-editorial {
    grid-template-columns: 1fr;
    grid-template-areas:
      "copy"
      "media"
      "facts";
    grid-template-rows: auto;
    gap: 0;
    height: auto;
    min-height: 0;
    padding: 54px 20px 22px;
  }

  .hero-copy {
    padding-bottom: 16px;
  }

  .hero-material {
    min-height: 0;
    margin: -8px -20px -6px;
  }

  .hero-material img {
    width: 100%;
    height: auto;
    max-height: none;
    object-fit: contain;
    transform: none;
  }

  .hero-facts {
    grid-template-columns: 1fr;
    transform: none;
  }

  .hero-facts span {
    min-height: 55px;
    padding: 12px 4px;
    border-bottom: 1px solid var(--line);
  }

  .hero-facts span + span {
    padding-left: 4px;
    border-left: 0;
  }

  .survey-note {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .survey-note > i {
    display: none;
  }
}

@media (max-width: 620px) {
  .survey-page {
    width: calc(100% - 20px);
    padding-bottom: 28px;
  }

  .brand-masthead {
    min-height: 68px;
    padding: 0 28px;
  }

  .brand-stamp {
    width: 34px;
    height: 34px;
    border-radius: 8px;
    font-size: 16px;
  }

  .brand-words b {
    font-size: 16px;
  }

  .brand-masthead > p {
    max-width: 104px;
    font-size: 9px;
    line-height: 1.4;
    text-align: right;
  }

  .hero-editorial {
    padding: 79px 19px 18px;
  }

  .hero-editorial h1 {
    font-size: clamp(35px, 10.5vw, 41px);
    line-height: 1.25;
  }

  .hero-editorial h1 em::after {
    bottom: -4px;
    height: 3px;
  }

  .hero-lead {
    margin-top: 28px;
    font-size: 14px;
    line-height: 1.95;
  }

  .hero-material {
    margin-top: -28px;
  }

  .hero-facts svg {
    width: 26px;
    height: 26px;
  }

  .hero-facts i {
    font-size: 13px;
  }

  .survey-note {
    margin-top: 8px;
    padding: 16px 17px;
    border-radius: 7px;
  }

  .survey-form {
    margin-top: 20px;
  }

  .aside-panel {
    padding: 15px 13px 13px;
    border-radius: 7px;
  }

  .aside-kicker {
    display: flex;
    justify-content: space-between;
  }

  .step-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 5px;
  }

  .step-nav a {
    grid-template-columns: 25px minmax(0, 1fr);
    min-height: 43px;
  }

  .question-section {
    padding: 25px 18px 28px;
    border-radius: 7px;
  }

  .section-title {
    gap: 14px;
    margin-bottom: 18px;
    padding-bottom: 19px;
  }

  .section-title > .badge {
    flex-basis: 43px;
    width: 43px;
    height: 43px;
  }

  .section-title h2 {
    font-size: 22px;
  }

  .basic-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 12px;
  }

  .basic-grid .field:nth-child(-n + 2) {
    grid-column: 1 / -1;
  }

  .choice-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .choice > span {
    min-height: 44px;
  }

  .submit-bar {
    bottom: 8px;
    min-height: 70px;
    padding: 10px 11px;
    border-radius: 8px;
  }

  .submit-bar .button {
    min-width: 142px;
    min-height: 48px;
  }

  .site-footer {
    padding-bottom: 72px;
  }
}