/* ==========================================================================
   如期官网 · 海报级大开本设计系统（Billboard）
   世界：近白纸面 + 正黑墨 + 值守绿单一强调；特大黑体标题、2px 规则线、
   巨型期号、黑底段落。克制用色，版面本身制造张力。
   参数化说明：全部视觉变量集中在 :root，调整即全站生效。
   ========================================================================== */

:root {
  /* 纸与墨 */
  --paper: #f7f7f4;
  --paper-raised: #ffffff;
  --paper-sunk: #efefe9;
  --ink: #141615;
  --ink-soft: #464c48;
  --ink-faint: #5f6a62;
  --rule: #d9d9d2;
  --rule-ink: #141615;

  /* 值守绿：唯一强调色 */
  --green: #0b6e5f;
  --green-deep: #07463c;
  --green-bright: #12a186;
  --green-wash: #e2efe8;
  --green-line: #9fc4b6;

  /* 真实状态色（只在示例图与真实状态中使用） */
  --seal: #0b6e5f;
  --seal-wash: #e2efe8;
  --draft: #9a4e0c;
  --draft-wash: #f7ecdd;

  /* 字 */
  --font-display:
    -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
  --font-body:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-code:
    ui-monospace, "SF Mono", "SFMono-Regular", Menlo, Consolas, monospace;

  /* 尺度 */
  --measure: 66ch;
  --gutter: clamp(20px, 4vw, 48px);
  --radius-sm: 2px;

  /* 动 */
  --ease-rise: cubic-bezier(0.19, 0.84, 0.22, 1);
}

/* ---------- 基底 ---------- */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

html {
  scrollbar-color: #9aa39c var(--paper);
}

input,
textarea {
  caret-color: var(--green);
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--green-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

a:hover {
  color: var(--green);
}

.num,
time,
.version-tag {
  font-variant-numeric: tabular-nums;
}

.skip-link {
  position: absolute;
  left: var(--gutter);
  top: -48px;
  z-index: 30;
  background: var(--ink);
  color: var(--paper);
  padding: 8px 16px;
  text-decoration: none;
  transition: top 0.15s var(--ease-rise);
}

.skip-link:focus-visible {
  top: 8px;
}

.skip-link:hover {
  color: var(--paper);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.container {
  max-width: 1240px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.hero-grid > *,
.feature > *,
.tour-panel > *,
.register-grid > *,
.download-box > *,
.cta-grid > * {
  min-width: 0;
}

/* ---------- 页头 ---------- */

.binding {
  height: 6px;
  background: var(--green-deep);
}

.site-head {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--paper) 94%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 2px solid var(--rule-ink);
}

.head-row {
  display: flex;
  align-items: center;
  gap: 28px;
  min-height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  flex: none;
}

.brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.brand-name {
  font-weight: 800;
  font-size: 22px;
  letter-spacing: 0.02em;
}

.brand-en {
  font-family: var(--font-code);
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.14em;
  align-self: flex-end;
  padding-bottom: 3px;
}

.catalog {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
}

.catalog a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 14.5px;
  font-weight: 500;
  padding: 8px 13px;
  border-radius: var(--radius-sm);
  position: relative;
}

.catalog a:hover {
  color: var(--ink);
  background: var(--paper-sunk);
}

.catalog a[aria-current="page"] {
  color: var(--ink);
  font-weight: 700;
}

.catalog a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 13px;
  right: 13px;
  bottom: 3px;
  height: 3px;
  background: var(--green);
}

.head-actions {
  display: flex;
  gap: 10px;
  flex: none;
}

.menu-button {
  display: none;
  border: 2px solid var(--rule-ink);
  background: var(--paper);
  color: var(--ink);
  font-size: 18px;
  line-height: 1;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.mobile-nav {
  display: none;
  border-bottom: 2px solid var(--rule-ink);
  background: var(--paper-raised);
  padding: 12px var(--gutter) 20px;
  flex-direction: column;
  gap: 4px;
}

.mobile-nav.open {
  display: flex;
}

.mobile-nav a {
  color: var(--ink);
  text-decoration: none;
  padding: 10px 4px;
  border-bottom: 1px solid var(--rule);
}

.mobile-nav a:last-child {
  border-bottom: 0;
}

/* ---------- 按钮 ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  cursor: pointer;
  border: 2px solid var(--rule-ink);
  transition:
    background 0.12s var(--ease-rise),
    color 0.12s var(--ease-rise),
    border-color 0.12s var(--ease-rise),
    transform 0.12s var(--ease-rise);
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

.btn-primary:hover {
  background: var(--green);
  border-color: var(--green);
  color: #fff;
}

.btn-secondary {
  background: transparent;
  color: var(--ink);
}

.btn-secondary:hover {
  border-color: var(--green);
  color: var(--green-deep);
  background: var(--green-wash);
}

.btn-small {
  padding: 9px 16px;
  font-size: 14px;
  border-width: 1.5px;
}

.btn-quiet {
  padding: 0;
  border: 0;
  color: var(--green-deep);
  font-weight: 700;
}

.btn-quiet::after {
  content: "→";
  margin-left: 6px;
}

/* ---------- 页面骨架 ---------- */

.page {
  position: relative;
}

.sheet {
  border-bottom: 2px solid var(--rule-ink);
  padding: clamp(56px, 8vw, 104px) 0;
  position: relative;
}

.sheet-raised {
  background: var(--paper-raised);
}

.sheet-sunk {
  background: var(--paper-sunk);
}

.sheet-ink {
  background: var(--ink);
  color: var(--paper);
}

.sheet-ink .sheet-head p {
  color: #b9c2ba;
}

.sheet-green {
  background: var(--green-deep);
  color: #e9f2ec;
  border-bottom-color: var(--green);
}

.sheet-head {
  max-width: 56rem;
  margin-bottom: clamp(36px, 5vw, 60px);
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.12;
  margin: 0 0 18px;
  text-wrap: balance;
  letter-spacing: -0.02em;
}

.sheet-head h2 {
  font-size: clamp(34px, 4.6vw, 56px);
}

.sheet-head p,
.page-hero .lede {
  margin: 0;
  color: var(--ink-soft);
  font-size: 17.5px;
  max-width: var(--measure);
}

h3 {
  font-size: 21px;
  letter-spacing: -0.01em;
}

/* ---------- 首屏 ---------- */

.page-hero {
  padding: clamp(52px, 7vw, 96px) 0 clamp(56px, 7vw, 96px);
  border-bottom: 2px solid var(--rule-ink);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(40px, 5vw, 80px);
  align-items: start;
  position: relative;
}

/* 巨型期号：每一期的纪念碑 */
.page-hero::after {
  content: "12";
  position: absolute;
  right: calc(var(--gutter) * 0.5);
  top: -0.06em;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(180px, 24vw, 380px);
  line-height: 1;
  letter-spacing: -0.05em;
  color: transparent;
  -webkit-text-stroke: 2px rgba(11, 110, 95, 0.3);
  pointer-events: none;
  z-index: 0;
}

.hero-grid > * {
  position: relative;
  z-index: 1;
}

.hero-copy-col {
  position: relative;
}

.page-hero h1 {
  font-size: clamp(52px, 7.4vw, 104px);
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.page-hero h1 .green-dot {
  color: var(--green);
}

.page-hero .lede {
  font-size: 18px;
}

/* 工单号式期号签 */
.hero-margin-note {
  display: inline-flex;
  gap: 0;
  margin: 26px 0 0;
  font-family: var(--font-code);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--green-deep);
  border: 1.5px solid var(--green);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.hero-margin-note span {
  white-space: nowrap;
  padding: 5px 12px;
}

.hero-margin-note span + span {
  background: var(--green);
  color: #fff;
}

.hero-margin-note span + span::before {
  content: none;
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 32px;
  flex-wrap: wrap;
}

.hero-facts {
  margin-top: 44px;
  padding: 20px 0 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-top: 2px solid var(--rule-ink);
}

.hero-facts li {
  font-size: 13.5px;
  color: var(--ink-soft);
  padding: 4px 24px 0 0;
  margin-right: 24px;
  border-right: 1px solid var(--rule);
}

.hero-facts li:last-child {
  border-right: 0;
}

.hero-facts strong {
  color: var(--ink);
  font-weight: 700;
}

/* ---------- 值守记录卡（工单质感） ---------- */

.dutylog {
  background: var(--paper-raised);
  border: 2px solid var(--rule-ink);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.dutylog-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  row-gap: 2px;
  column-gap: 16px;
  padding: 14px 20px;
  border-bottom: 2px solid var(--rule-ink);
  background: var(--green-deep);
  color: #eaf4ee;
}

.dutylog-head strong {
  font-size: 15px;
  font-weight: 700;
}

.dutylog-head span {
  font-family: var(--font-code);
  font-size: 12px;
  color: #9fd4c2;
}

.logline {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--rule);
  font-size: 14.5px;
}

.logline:last-child {
  border-bottom: 0;
}

.logline time {
  font-family: var(--font-code);
  font-size: 12.5px;
  color: var(--ink-faint);
  flex: none;
  width: 44px;
}

.logline .logline-state {
  margin-left: auto;
  font-family: var(--font-code);
  font-size: 12px;
  color: var(--green-deep);
  flex: none;
}

.logline.is-open .logline-text {
  color: var(--ink-faint);
}

/* 合格章 */
.stamp {
  display: inline-block;
  font-family: var(--font-code);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--seal);
  border: 2px solid var(--seal);
  border-radius: var(--radius-sm);
  padding: 4px 9px;
  transform: rotate(-3deg);
  background: var(--seal-wash);
  white-space: nowrap;
}

.stamp-large {
  font-size: 14px;
  padding: 6px 12px;
}

.stamped .stamp,
.stamp.stamped {
  animation: stamp-in 0.45s var(--ease-rise) both;
}

@keyframes stamp-in {
  0% {
    transform: rotate(-12deg) scale(1.6);
    opacity: 0;
    filter: blur(2px);
  }
  60% {
    transform: rotate(-2deg) scale(0.96);
    opacity: 1;
    filter: blur(0);
  }
  100% {
    transform: rotate(-3deg) scale(1);
    opacity: 1;
  }
}

/* ---------- 标本带：绿底产品图 ---------- */

.specimen {
  background: var(--green-deep);
  padding: clamp(48px, 6vw, 88px) 0;
  border-bottom: 2px solid var(--rule-ink);
  position: relative;
  overflow: hidden;
}

.specimen::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      to right,
      transparent 0 79px,
      rgba(255, 255, 255, 0.06) 79px 80px
    ),
    repeating-linear-gradient(
      to bottom,
      transparent 0 79px,
      rgba(255, 255, 255, 0.06) 79px 80px
    );
  pointer-events: none;
}

.specimen .container {
  position: relative;
}

.specimen-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  color: #eaf4ee;
  margin-bottom: 28px;
}

.specimen-head strong {
  font-family: var(--font-code);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: #9fd4c2;
}

.specimen-head span {
  font-size: 13.5px;
  color: #b9d6c8;
  max-width: 56ch;
}

.specimen .plate {
  background: var(--paper-raised);
  border: 2px solid var(--rule-ink);
  max-width: 980px;
  margin-inline: auto;
}

/* ---------- 产品示例图 ---------- */

.plate {
  margin: 0;
  background: var(--paper-raised);
  border: 2px solid var(--rule-ink);
  padding: 10px 10px 0;
  border-radius: var(--radius-sm);
}

.plate figcaption {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 4px 12px;
  font-size: 12px;
  color: var(--ink-faint);
  font-family: var(--font-code);
  letter-spacing: 0.04em;
}

.appwin {
  background: #fff;
  border: 1px solid var(--rule);
  border-radius: 4px;
  overflow: hidden;
  font-size: 11px;
  line-height: 1.5;
  color: #2b3a33;
  text-align: left;
}

.appwin-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #f4f5f0;
  border-bottom: 1px solid #e3e6dc;
  padding: 6px 10px;
}

.appwin-bar .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #d3d8cc;
}

.appwin-bar .appwin-title {
  font-size: 11px;
  color: #5c6a60;
  margin-left: 4px;
}

.appwin-tabs {
  display: flex;
  gap: 4px;
  padding: 6px 10px 0;
  background: #f4f5f0;
  border-bottom: 1px solid #e3e6dc;
  overflow: hidden;
}

.appwin-tab {
  padding: 4px 10px;
  font-size: 10.5px;
  color: #5c6a60;
  background: #eceee5;
  border: 1px solid #e0e3d8;
  border-bottom: 0;
  border-radius: 4px 4px 0 0;
  white-space: nowrap;
}

.appwin-tab.active {
  background: #fff;
  color: var(--green-deep);
  font-weight: 600;
}

.appwin-body {
  display: grid;
  grid-template-columns: 118px minmax(0, 1fr);
  min-height: 240px;
}

.appwin-side {
  background: #f8f9f4;
  border-right: 1px solid #e6e9df;
  padding: 8px;
}

.appwin-side .side-brand {
  display: flex;
  align-items: center;
  gap: 5px;
  font-weight: 700;
  color: var(--green-deep);
  font-size: 11px;
  margin-bottom: 8px;
}

.appwin-side .side-brand img {
  width: 14px;
  height: 14px;
  border-radius: 3px;
}

.side-item {
  padding: 4px 7px;
  border-radius: 3px;
  color: #5c6a60;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.side-item.active {
  background: var(--green-wash);
  color: var(--green-deep);
  font-weight: 600;
}

.side-label {
  margin: 8px 0 3px;
  font-size: 10px;
  color: #5f6d63;
  letter-spacing: 0.08em;
}

.appwin-main {
  padding: 10px 12px;
  min-width: 0;
}

.appwin-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.appwin-toolbar b {
  font-size: 12px;
  color: #22302a;
}

.appwin-chip {
  font-size: 10px;
  padding: 2px 7px;
  border-radius: 99px;
  background: var(--green-wash);
  color: var(--green-deep);
  white-space: nowrap;
}

.appwin-chip.is-draft {
  background: var(--draft-wash);
  color: var(--draft);
}

.appwin-stats {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.appwin-stat {
  flex: 1 1 0;
  min-width: 84px;
  border: 1px solid #e6e9df;
  border-radius: 4px;
  padding: 6px 8px;
  background: #fbfcf8;
}

.appwin-stat span {
  display: block;
  font-size: 10px;
  color: #637165;
}

.appwin-stat strong {
  font-size: 14px;
  color: #1d2b24;
  font-variant-numeric: tabular-nums;
}

.appwin-stat em {
  display: block;
  font-style: normal;
  font-size: 10px;
  color: var(--green-deep);
  margin-top: 2px;
}

.appwin-table {
  width: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}

.appwin-table th,
.appwin-table td {
  border-bottom: 1px solid #edf0e6;
  padding: 4px 6px;
  font-size: 10.5px;
  text-align: right;
  white-space: nowrap;
}

.appwin-table th:first-child,
.appwin-table td:first-child {
  text-align: left;
}

.appwin-table th {
  color: #637165;
  font-weight: 500;
  background: #f8f9f4;
}

.appwin-table td {
  color: #33413a;
}

.appwin-table tr.is-selected td {
  background: var(--green-wash);
}

.appwin-note {
  margin-top: 8px;
  font-size: 10px;
  color: #5f6d63;
  display: flex;
  align-items: center;
  gap: 6px;
}

.appwin-note::before {
  content: "";
  width: 14px;
  height: 1px;
  background: var(--rule);
}

.bars {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 64px;
  padding: 8px 4px 0;
  border-bottom: 1px solid #e6e9df;
}

.bars i {
  flex: 1;
  background: #dfe7dd;
  border-radius: 2px 2px 0 0;
  min-height: 8%;
}

.bars i.hi {
  background: var(--green);
}

.bars-row {
  display: flex;
  gap: 6px;
  padding: 3px 4px 0;
  font-size: 10px;
  color: #5f6d63;
  text-align: center;
}

.bars-row span {
  flex: 1;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.kpi-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 8px;
}

.kpi {
  border: 1px solid #e6e9df;
  border-radius: 4px;
  padding: 7px 9px;
  background: #fbfcf8;
}

.kpi span {
  display: block;
  font-size: 10px;
  color: #637165;
}

.kpi strong {
  font-size: 16px;
  color: #1d2b24;
  font-variant-numeric: tabular-nums;
}

.kpi em {
  font-style: normal;
  font-size: 10px;
  margin-left: 4px;
}

.kpi em.up {
  color: var(--green-deep);
}

.kpi em.warn {
  color: var(--draft);
}

.workbench {
  display: grid;
  grid-template-columns: 108px minmax(0, 1fr) 108px;
  gap: 0;
  min-height: 220px;
}

.workbench .wb-panel {
  background: #f8f9f4;
  padding: 8px;
}

.workbench .wb-panel:first-child {
  border-right: 1px solid #e6e9df;
}

.workbench .wb-panel:last-child {
  border-left: 1px solid #e6e9df;
}

.wb-panel h4 {
  margin: 0 0 6px;
  font-size: 10px;
  color: #5f6d63;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.wb-item {
  border: 1px solid #e0e3d8;
  background: #fff;
  border-radius: 3px;
  padding: 4px 7px;
  margin-bottom: 5px;
  color: #5c6a60;
  font-size: 10.5px;
}

.wb-canvas {
  padding: 12px;
  background:
    repeating-linear-gradient(to right, transparent 0 23px, #eef1e7 23px 24px),
    repeating-linear-gradient(to bottom, transparent 0 23px, #eef1e7 23px 24px),
    #fff;
}

.wb-card {
  border: 1px solid var(--green-line);
  border-radius: 4px;
  background: #fff;
  padding: 8px 10px;
  max-width: 240px;
}

.wb-card span {
  display: block;
  font-size: 10px;
  color: #637165;
}

.wb-card strong {
  font-size: 15px;
  color: #1d2b24;
  font-variant-numeric: tabular-nums;
}

.wb-field {
  display: flex;
  justify-content: space-between;
  font-size: 10.5px;
  padding: 4px 0;
  border-bottom: 1px dashed #e0e3d8;
  color: #5c6a60;
}

.wb-field b {
  color: #33413a;
  font-weight: 600;
}

/* ---------- AI 示例图 ---------- */

.ai-chat {
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ai-msg {
  align-self: flex-end;
  background: var(--green-wash);
  border: 1px solid var(--green-line);
  color: #22302a;
  border-radius: 6px 6px 2px;
  padding: 6px 10px;
  font-size: 11px;
  max-width: 88%;
}

.ai-reply {
  align-self: stretch;
  background: #fff;
  border: 1px solid #e6e9df;
  border-radius: 2px 6px 6px;
  padding: 8px 10px;
}

.ai-candidate {
  border: 1px dashed var(--draft);
  background: var(--draft-wash);
  border-radius: 4px;
  padding: 8px 10px;
}

.ai-cand-title {
  font-size: 10.5px;
  font-weight: 600;
  color: var(--draft);
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

.ai-cand-row {
  font-size: 11px;
  margin-top: 6px;
  color: #33413a;
}

.ai-cand-row b {
  color: #1d2b24;
}

.ai-cand-actions {
  display: flex;
  gap: 6px;
  margin-top: 8px;
}

.ai-btn {
  font-size: 10px;
  padding: 3px 9px;
  border-radius: 3px;
  border: 1px solid var(--rule);
  background: #fff;
  color: #5c6a60;
}

.ai-btn.primary {
  background: var(--green-deep);
  border-color: var(--green-deep);
  color: #f2f7f3;
}

.ai-chips {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  padding: 8px 12px 10px;
  border-top: 1px solid #edf0e6;
}

.ai-chip {
  font-size: 10px;
  color: #5c6a60;
  border: 1px solid #e0e3d8;
  background: #f8f9f4;
  border-radius: 99px;
  padding: 2px 8px;
}

/* 分析计划节点图示例 */
.nodeflow {
  padding: 12px;
  display: flex;
  flex-direction: column;
  background:
    repeating-linear-gradient(to right, transparent 0 23px, #f2f4ec 23px 24px),
    repeating-linear-gradient(to bottom, transparent 0 23px, #f2f4ec 23px 24px),
    #fff;
}

.nf-node {
  border: 1px solid var(--green-line);
  background: #fff;
  border-radius: 4px;
  padding: 6px 10px;
  font-size: 11px;
  font-weight: 600;
  color: #22302a;
  max-width: 75%;
}

.nf-node span {
  display: block;
  font-weight: 400;
  font-size: 10px;
  color: #637165;
  margin-top: 2px;
}

.nf-node.is-ai {
  border-style: dashed;
  border-color: var(--draft);
  background: var(--draft-wash);
  align-self: flex-end;
}

.nf-node.is-out {
  border-color: var(--green);
  background: var(--green-wash);
}

.nf-link {
  width: 1.5px;
  height: 12px;
  background: var(--green-line);
  margin-left: 18px;
}

.nf-link.is-back {
  margin-left: 0;
  margin-right: 18px;
  align-self: flex-end;
}

/* ---------- 条目列表 ---------- */

.entries {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--rule-ink);
}

.entry {
  display: grid;
  grid-template-columns: minmax(0, 220px) minmax(0, 1fr);
  gap: clamp(20px, 4vw, 56px);
  padding: 30px 0;
  border-bottom: 1px solid var(--rule);
}

.entry-index {
  font-family: var(--font-code);
  font-size: 12px;
  color: var(--ink-faint);
  letter-spacing: 0.1em;
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding-top: 6px;
}

.entry-index b {
  font-family: var(--font-display);
  font-size: 17px;
  color: var(--green-deep);
  letter-spacing: 0.02em;
  font-weight: 800;
}

.entry h3 {
  margin-bottom: 8px;
}

.entry p {
  margin: 0;
  color: var(--ink-soft);
  max-width: var(--measure);
}

.entry .entry-points {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.entry .entry-points li,
.feature-copy .entry-points li {
  font-size: 14.5px;
  color: var(--ink-soft);
  padding: 5px 0 5px 20px;
  position: relative;
}

.entry .entry-points li::before,
.feature-copy .entry-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 15px;
  width: 9px;
  height: 2px;
  background: var(--green);
}

.feature-copy .entry-points {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

/* ---------- 特性分栏 ---------- */

.feature {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
  padding: clamp(40px, 5vw, 72px) 0;
  border-bottom: 1px solid var(--rule);
}

.feature:first-child {
  padding-top: 8px;
}

.feature:last-child {
  border-bottom: 0;
}

.feature-flip .feature-copy {
  order: 2;
}

.feature-flip .feature-visual {
  order: 1;
}

.feature-copy h3,
.feature-copy h2 {
  font-size: clamp(24px, 2.8vw, 32px);
  margin-bottom: 14px;
}

.feature-copy p {
  color: var(--ink-soft);
  margin: 0 0 16px;
}

.feature-no {
  font-family: var(--font-code);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--green-deep);
  display: block;
  margin-bottom: 14px;
}

/* 推荐标记 */
.flag {
  position: absolute;
  top: 18px;
  right: 18px;
  font-family: var(--font-code);
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  background: var(--green);
  border: 0;
  border-radius: var(--radius-sm);
  padding: 4px 10px;
  white-space: nowrap;
}

/* ---------- 三栏约定 ---------- */

.pledge {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 2px solid var(--rule-ink);
  border-bottom: 2px solid var(--rule-ink);
}

.pledge-item {
  padding: 30px;
  border-right: 1px solid var(--rule);
}

.pledge-item:last-child {
  border-right: 0;
}

.pledge-item strong {
  display: block;
  font-weight: 800;
  font-size: 22px;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.pledge-item span {
  font-size: 14.5px;
  color: var(--ink-soft);
}

/* ---------- 能力账页 ---------- */

.ledger {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: clamp(28px, 4vw, 56px);
  border-top: 2px solid var(--rule-ink);
}

.ledger-row {
  display: flex;
  gap: 18px;
  padding: 24px 0;
  border-bottom: 1px solid var(--rule);
  align-items: baseline;
}

.ledger-row .ledger-mark {
  flex: none;
  width: 30px;
  height: 30px;
  border: 2px solid var(--green);
  border-radius: 50%;
  color: var(--green-deep);
  font-family: var(--font-code);
  font-size: 11.5px;
  font-weight: 700;
  display: grid;
  place-items: center;
  transform: translateY(5px);
}

.ledger-row h3 {
  font-size: 18px;
  margin: 0 0 6px;
}

.ledger-row p {
  margin: 0;
  font-size: 14.5px;
  color: var(--ink-soft);
}

.sheet-ink .ledger {
  border-top-color: var(--paper);
}

.sheet-ink .ledger-row {
  border-bottom-color: #2c3230;
}

.sheet-ink .ledger-row p {
  color: #b9c2ba;
}

.sheet-ink .ledger-row .ledger-mark {
  color: var(--green-bright);
  border-color: var(--green-bright);
}

/* ---------- 导览页签 ---------- */

.tour-tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--rule-ink);
  overflow-x: auto;
}

.tour-tab {
  appearance: none;
  background: none;
  border: 0;
  border-bottom: 3px solid transparent;
  padding: 16px 22px 13px;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  color: var(--ink-soft);
  cursor: pointer;
  text-align: left;
  white-space: nowrap;
}

.tour-tab span {
  display: block;
  font-family: var(--font-code);
  font-size: 11.5px;
  font-weight: 400;
  color: var(--ink-faint);
  margin-top: 3px;
}

.tour-tab[aria-selected="true"] {
  color: var(--ink);
  font-weight: 800;
  border-bottom-color: var(--green);
}

.tour-tab[aria-selected="true"] span {
  color: var(--green-deep);
}

.tour-panel {
  padding: clamp(28px, 4vw, 48px) 0 8px;
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(24px, 4vw, 56px);
  align-items: center;
}

.tour-panel[hidden] {
  display: none;
}

.tour-panel-copy h3 {
  font-size: clamp(22px, 2.6vw, 30px);
}

.tour-panel-copy p {
  color: var(--ink-soft);
  margin: 0 0 18px;
}

/* ---------- 价格 ---------- */

.price-table {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 2px solid var(--rule-ink);
  background: var(--paper-raised);
}

.price-col {
  padding: clamp(26px, 3vw, 40px);
  border-right: 1px solid var(--rule);
  position: relative;
  display: flex;
  flex-direction: column;
}

.price-col:last-child {
  border-right: 0;
}

.price-col.is-featured {
  background: var(--green-deep);
  color: #eaf4ee;
}

.price-col.is-featured .price-desc,
.price-col.is-featured .price-points li {
  color: #b9d6c8;
}

.price-col.is-featured .price-points {
  border-top-color: #2c5a4e;
}

.price-col.is-featured .price-points li::before {
  color: var(--green-bright);
}

.price-name {
  font-weight: 800;
  font-size: 20px;
}

.price-value {
  font-weight: 800;
  font-size: clamp(40px, 4.4vw, 56px);
  letter-spacing: -0.03em;
  margin: 14px 0 4px;
  font-variant-numeric: tabular-nums;
}

.price-value small {
  font-size: 15px;
  font-weight: 400;
  color: var(--ink-faint);
}

.price-col.is-featured .price-value small {
  color: #9fd4c2;
}

.price-desc {
  font-size: 14px;
  color: var(--ink-soft);
  margin: 0 0 18px;
  min-height: 3em;
}

.price-points {
  list-style: none;
  margin: 0 0 24px;
  padding: 18px 0 0;
  border-top: 1px solid var(--rule);
  flex: 1;
}

.price-points li {
  font-size: 14.5px;
  color: var(--ink-soft);
  padding: 5px 0 5px 22px;
  position: relative;
}

.price-points li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--green);
  font-weight: 700;
}

.price-col.is-featured .btn-primary {
  background: var(--paper);
  border-color: var(--paper);
  color: var(--green-deep);
}

.price-col.is-featured .btn-primary:hover {
  background: #fff;
  color: var(--green-deep);
}

.price-note {
  margin-top: 20px;
  font-size: 13px;
  color: var(--ink-faint);
  max-width: var(--measure);
}

/* ---------- 下载 ---------- */

.download-box {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: clamp(24px, 4vw, 48px);
  border: 2px solid var(--rule-ink);
  background: var(--paper-raised);
  padding: clamp(24px, 4vw, 44px);
}

.platform-list {
  border-top: 2px solid var(--rule-ink);
}

.platform-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--rule);
}

.platform-row strong {
  font-size: 16px;
}

.platform-row .platform-meta {
  font-family: var(--font-code);
  font-size: 12px;
  color: var(--ink-faint);
  display: block;
}

.pill {
  margin-left: auto;
  font-family: var(--font-code);
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 99px;
  border: 1.5px solid var(--rule-ink);
  color: var(--ink-soft);
  white-space: nowrap;
}

.pill.is-pending {
  border-color: var(--draft);
  color: var(--draft);
  background: var(--draft-wash);
}

.pill.is-ready {
  border-color: var(--green);
  color: var(--green-deep);
  background: var(--green-wash);
}

/* ---------- 数据旅程链 ---------- */

.journey {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 0;
  border-top: 2px solid var(--rule-ink);
  border-bottom: 2px solid var(--rule-ink);
}

.journey-step {
  flex: 1 1 160px;
  padding: 24px 24px 24px 0;
  margin-right: 24px;
  border-right: 1px solid var(--rule);
  position: relative;
}

.journey-step:last-child {
  border-right: 0;
  margin-right: 0;
}

.journey-step time {
  font-family: var(--font-code);
  font-size: 11.5px;
  color: var(--green-deep);
  letter-spacing: 0.1em;
  font-weight: 700;
}

.journey-step strong {
  display: block;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.01em;
  margin: 8px 0 6px;
}

.journey-step span {
  font-size: 13.5px;
  color: var(--ink-soft);
}

/* ---------- 帮助 ---------- */

.help-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 2px solid var(--rule-ink);
  background: var(--paper-raised);
}

.help-nav a {
  padding: 28px;
  border-right: 1px solid var(--rule);
  text-decoration: none;
  color: var(--ink);
  display: block;
}

.help-nav a:last-child {
  border-right: 0;
}

.help-nav a:hover {
  background: var(--green-wash);
}

.help-nav h3 {
  font-size: 19px;
  margin-bottom: 8px;
}

.help-nav p {
  margin: 0 0 12px;
  font-size: 14.5px;
  color: var(--ink-soft);
}

.help-nav .btn-quiet {
  font-size: 14px;
}

.faq {
  border-top: 2px solid var(--rule-ink);
}

.faq details {
  border-bottom: 1px solid var(--rule);
}

.faq summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 20px 4px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary .faq-no {
  font-family: var(--font-code);
  font-size: 12px;
  color: var(--ink-faint);
  font-weight: 400;
  flex: none;
  width: 34px;
}

.faq summary::after {
  content: "+";
  margin-left: auto;
  font-weight: 400;
  color: var(--green-deep);
  font-size: 24px;
  transition: transform 0.15s var(--ease-rise);
}

.faq details[open] summary::after {
  transform: rotate(45deg);
}

.faq .faq-body {
  padding: 0 4px 24px 50px;
  color: var(--ink-soft);
  max-width: var(--measure);
}

.faq .faq-body p {
  margin: 0 0 10px;
}

/* ---------- 注册 / 账号 ---------- */

.register-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: start;
}

.register-facts {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  border-top: 2px solid var(--rule-ink);
}

.register-facts li {
  padding: 18px 0;
  border-bottom: 1px solid var(--rule);
}

.register-facts strong {
  display: block;
  font-weight: 800;
  font-size: 17px;
  margin-bottom: 4px;
}

.register-facts span {
  font-size: 14.5px;
  color: var(--ink-soft);
}

.register-card {
  background: var(--paper-raised);
  border: 2px solid var(--rule-ink);
  border-radius: var(--radius-sm);
  padding: clamp(20px, 3vw, 32px);
}

.register-tabs {
  display: flex;
  border-bottom: 2px solid var(--rule-ink);
  margin-bottom: 22px;
}

.register-tab {
  appearance: none;
  background: none;
  border: 0;
  border-bottom: 3px solid transparent;
  padding: 10px 18px;
  font-size: 15px;
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--ink-soft);
  cursor: pointer;
}

.register-tab[aria-selected="true"] {
  color: var(--ink);
  font-weight: 800;
  border-bottom-color: var(--green);
}

.register-panel[hidden] {
  display: none;
}

.register-panel h3 {
  font-size: 19px;
  margin-bottom: 4px;
}

.register-panel .panel-sub {
  font-size: 13.5px;
  color: var(--ink-faint);
  margin: 0 0 20px;
}

.field {
  margin-bottom: 16px;
}

.field label {
  display: block;
  font-size: 13.5px;
  font-weight: 700;
  margin-bottom: 6px;
}

.field .field-input {
  display: flex;
  gap: 8px;
}

.field input {
  width: 100%;
  font: inherit;
  font-size: 15px;
  color: var(--ink);
  background: #fff;
  border: 1.5px solid var(--rule-ink);
  border-radius: var(--radius-sm);
  padding: 11px 12px;
}

.field input:focus {
  outline: 2px solid var(--green);
  outline-offset: 1px;
  border-color: var(--green);
}

.field input[aria-invalid="true"] {
  border-color: #b3392c;
}

.field .field-hint {
  font-size: 12.5px;
  color: var(--ink-faint);
  margin-top: 5px;
}

.field .field-error {
  font-size: 12.5px;
  color: #b3392c;
  margin-top: 5px;
  display: none;
}

.field.has-error .field-error {
  display: block;
}

.field.has-error .field-hint {
  display: none;
}

.code-btn,
.ghost-btn {
  flex: none;
  font: inherit;
  font-size: 13.5px;
  font-weight: 600;
  padding: 0 14px;
  border: 1.5px solid var(--rule-ink);
  background: var(--paper-raised);
  color: var(--green-deep);
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
}

.code-btn:disabled {
  color: var(--ink-faint);
  cursor: default;
}

.consent {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 13.5px;
  color: var(--ink-soft);
  margin: 18px 0;
}

.consent input {
  margin-top: 4px;
  accent-color: var(--green);
}

.form-status {
  font-size: 13.5px;
  margin-top: 14px;
  min-height: 1.6em;
}

.form-status.is-error {
  color: #b3392c;
}

.form-status.is-ok {
  color: var(--green-deep);
}

.submit-btn {
  width: 100%;
  justify-content: center;
}

/* ---------- CTA 带 ---------- */

.cta-band {
  background: var(--green-deep);
  color: #eaf4ee;
  padding: clamp(56px, 8vw, 104px) 0;
  position: relative;
  overflow: hidden;
  border-bottom: 2px solid var(--rule-ink);
}

.cta-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  position: relative;
}

.cta-band h2 {
  font-size: clamp(36px, 5vw, 64px);
  margin-bottom: 14px;
}

.cta-band p {
  margin: 0;
  color: #b9d6c8;
  max-width: 52ch;
  font-size: 16.5px;
}

.cta-band .btn-primary {
  background: var(--paper);
  border-color: var(--paper);
  color: var(--green-deep);
}

.cta-band .btn-primary:hover {
  background: #fff;
  border-color: #fff;
  color: var(--green-deep);
}

.cta-band .stamp {
  background: transparent;
  color: #9fd4c2;
  border-color: #9fd4c2;
}

/* ---------- 卷末（页脚） ---------- */

.site-foot {
  background: var(--ink);
  color: var(--paper);
  padding: clamp(44px, 6vw, 72px) 0 32px;
}

.site-foot .brand,
.site-foot .brand-name {
  color: var(--paper);
}

.foot-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
  gap: clamp(24px, 4vw, 48px);
  padding-bottom: 40px;
  border-bottom: 1px solid #2c3230;
}

.foot-intro p {
  color: #b9c2ba;
  font-size: 14px;
  max-width: 34ch;
  margin: 14px 0 0;
}

.foot-colophon {
  margin-top: 18px;
}

.foot-colophon .stamp {
  color: var(--green-bright);
  border-color: var(--green-bright);
  background: transparent;
}

.foot-group h2 {
  font-family: var(--font-code);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--green-bright);
  margin: 0 0 14px;
}

.foot-group a {
  display: block;
  color: #b9c2ba;
  text-decoration: none;
  font-size: 14.5px;
  padding: 5px 0;
}

.foot-group a:hover {
  color: #fff;
}

.foot-bottom {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 24px;
  font-size: 13px;
  color: #79847c;
}

/* ---------- 落笔动效 ---------- */

@media (prefers-reduced-motion: no-preference) {
  .js-pen .pen {
    opacity: 0;
    transform: translateY(26px);
  }

  .js-pen .pen.penned {
    opacity: 1;
    transform: translateY(0);
    transition:
      transform 0.65s var(--ease-rise),
      opacity 0.4s linear;
  }

  .js-pen .pen.penned.d1 {
    transition-delay: 0.06s;
  }
  .js-pen .pen.penned.d2 {
    transition-delay: 0.14s;
  }
  .js-pen .pen.penned.d3 {
    transition-delay: 0.22s;
  }
  .js-pen .pen.penned.d4 {
    transition-delay: 0.3s;
  }
}

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

  .stamped .stamp,
  .stamp.stamped {
    animation: none;
  }
}

/* ---------- 响应式 ---------- */

@media (max-width: 980px) {
  .catalog,
  .head-actions {
    display: none;
  }

  .menu-button {
    display: block;
    margin-left: auto;
  }

  .hero-grid,
  .feature,
  .tour-panel,
  .register-grid,
  .download-box {
    grid-template-columns: 1fr;
  }

  .feature-flip .feature-copy {
    order: 0;
  }

  .feature-flip .feature-visual {
    order: 1;
  }

  .pledge,
  .help-nav,
  .price-table {
    grid-template-columns: 1fr;
  }

  .pledge-item,
  .help-nav a,
  .price-col {
    border-right: 0;
    border-bottom: 1px solid var(--rule);
  }

  .pledge-item:last-child,
  .help-nav a:last-child,
  .price-col:last-child {
    border-bottom: 0;
  }

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

  .entry {
    grid-template-columns: 1fr;
    gap: 8px;
  }

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

  .page-hero::after {
    font-size: clamp(140px, 30vw, 220px);
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  .appwin-body {
    grid-template-columns: 1fr;
  }

  .appwin-side {
    display: none;
  }

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

  .workbench .wb-panel:last-child {
    display: none;
  }

  .kpi-row {
    grid-template-columns: 1fr 1fr;
  }

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

  .hero-facts li {
    border-right: 0;
    padding-right: 0;
  }
}