@charset "UTF-8";
/* ==========================================================================
   Ink Charm 产品官网 — 「墨与纸」编辑式版式
   只引用 site-tokens.css 的令牌；不写死任何色值，不请求任何外网资源。
   结构：导航 → Hero → 功能与特点（8 个截图位）→ 工作流 → 可信度/安全
        → 价格与使用声明（下方约 20%）→ 常见问题 → 页脚（QQ 群 + 二维码）
   ========================================================================== */

:root {
  color-scheme: light dark;
  --shell: 1280px;
  --gutter: clamp(20px, 4.8vw, 76px);
  --section-space: clamp(88px, 11vw, 156px);
  --header-height: 72px;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --scroll-progress: 0;
  scrollbar-color: transparent transparent;
  scrollbar-width: thin;
  scrollbar-gutter: stable;
  scroll-padding-top: calc(var(--header-height) + 28px);
}

html[data-scroll-hover],
html[data-scrolling] {
  scrollbar-color: var(--text-tertiary) transparent;
}

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

html {
  overflow-x: clip;
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background-color: var(--bg-page);
  background-image:
    radial-gradient(
      ellipse at 8% -8%,
      color-mix(in srgb, var(--warning-soft) 70%, transparent) 0,
      transparent 52%
    ),
    radial-gradient(
      ellipse at 100% 4%,
      color-mix(in srgb, var(--primary-soft) 65%, transparent) 0,
      transparent 44%
    ),
    repeating-linear-gradient(
      0deg,
      color-mix(in srgb, var(--text-primary) 2.2%, transparent) 0 1px,
      transparent 1px 4px
    );
  color: var(--text-primary);
  font: var(--font-body);
  overflow-x: clip;
}

h1,
h2,
h3,
h4,
p,
ul,
ol,
dl,
dd,
figure,
blockquote {
  margin: 0;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

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

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

a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

button,
summary {
  cursor: pointer;
  font: inherit;
  color: inherit;
}

button {
  border: 0;
  background: none;
}

a,
button,
summary {
  touch-action: manipulation;
}

:where(a, button, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: var(--radius-1);
}

::selection {
  background: var(--selection);
}

code,
kbd,
pre {
  font-family: ui-monospace, "Cascadia Mono", "SFMono-Regular", Consolas,
    monospace;
}

h1,
h2,
h3 {
  font-family: var(--font-family-manuscript);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.shell {
  width: min(var(--shell), calc(100% - var(--gutter) * 2));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: 80;
  padding: 10px 16px;
  border-radius: var(--radius-3);
  background: var(--text-primary);
  color: var(--bg-page);
  font: var(--font-aux);
}

.skip-link:focus {
  top: 12px;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-tertiary);
  font: 500 10.5px/1.6 var(--font-family-ui);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}

.eyebrow--invert {
  color: color-mix(in srgb, var(--bg-page) 55%, transparent);
}

.is-pending {
  color: var(--warning);
}

.inline-code {
  font-size: 10.5px;
  overflow-wrap: anywhere;
}

/* ---- 导航 ---------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid color-mix(in srgb, var(--hairline) 78%, transparent);
  background: color-mix(in srgb, var(--bg-page) 88%, transparent);
  backdrop-filter: blur(16px) saturate(1.15);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 18px 32px;
  min-height: var(--header-height);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  flex-shrink: 0;
}

.brand:hover {
  text-decoration: none;
}

.brand-mark {
  width: 25px;
  height: 25px;
  color: var(--primary);
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.brand-name {
  font: 600 16px/1.2 var(--font-family-ui);
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.brand-sub {
  color: var(--text-tertiary);
  font: 400 9.5px/1.2 var(--font-family-ui);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px 26px;
  margin-left: auto;
  font: 400 13px/1.6 var(--font-family-ui);
}

.site-nav a {
  position: relative;
  padding: 4px 0;
  color: var(--text-secondary);
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease-out);
}

.site-nav a:hover {
  color: var(--text-primary);
  text-decoration: none;
}

.site-nav a:hover::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.header-github {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 38px;
  padding: 0 10px;
  color: var(--text-secondary);
  font: 400 12px/1 var(--font-family-ui);
}

.header-github:hover {
  color: var(--text-primary);
  text-decoration: none;
}

.icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.scroll-progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 1.5px;
  background: var(--primary);
  transform: scaleX(var(--scroll-progress));
  transform-origin: left center;
  opacity: 0.75;
}

/* ---- 按钮 ---------------------------------------------------------------- */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 42px;
  padding: 10px 18px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-3);
  background: var(--surface);
  color: var(--text-primary);
  font: 500 13px/1.4 var(--font-family-ui);
  text-decoration: none;
  transition:
    background 0.25s var(--ease-out),
    border-color 0.25s var(--ease-out),
    transform 0.25s var(--ease-out);
}

.button:hover {
  background: var(--bg-hover);
  border-color: var(--text-tertiary);
  text-decoration: none;
}

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

.button--primary {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--text-on-primary);
}

.button--primary:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
  color: var(--text-on-primary);
}

.button--ghost {
  background: transparent;
}

.button--small {
  min-height: 38px;
  padding: 8px 14px;
  font-size: 12px;
}

.button--large {
  min-height: 50px;
  padding: 12px 22px;
  font-size: 14px;
}

.button .icon {
  width: 17px;
  height: 17px;
}

.arrow {
  font-size: 12px;
  line-height: 1;
  opacity: 0.72;
}

/* ---- Hero ---------------------------------------------------------------- */
.hero {
  position: relative;
  overflow: clip;
  padding-top: clamp(48px, 7vw, 92px);
  padding-bottom: 28px;
}

.hero-ambient {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: clip;
}

.hero-ink {
  position: absolute;
  top: -6%;
  right: -12%;
  width: min(74vw, 960px);
  opacity: 0.52;
  filter: saturate(0.72);
  mask-image: radial-gradient(ellipse at 58% 42%, var(--text-primary) 0 34%, transparent 72%);
  -webkit-mask-image: radial-gradient(ellipse at 58% 42%, var(--text-primary) 0 34%, transparent 72%);
  will-change: transform;
}

.hero-ink img {
  width: 100%;
  height: auto;
}

.hero-wash {
  position: absolute;
  top: 18%;
  left: -22%;
  width: 64vw;
  height: 64vw;
  max-width: 880px;
  max-height: 880px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    color-mix(in srgb, var(--primary) 10%, transparent) 0,
    transparent 68%
  );
  opacity: 0.85;
  will-change: transform;
}

.hero-dots {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(
    circle,
    color-mix(in srgb, var(--text-primary) 18%, transparent) 0 1px,
    transparent 1.2px
  );
  background-size: 26px 26px;
  opacity: 0.28;
  mask-image: radial-gradient(ellipse at 78% 38%, black 0, transparent 62%);
  will-change: transform;
}

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  align-items: center;
  gap: clamp(24px, 4vw, 60px);
  min-height: calc(100svh - var(--header-height) - 40px);
  padding-bottom: clamp(24px, 4vw, 52px);
}

.hero-copy {
  max-width: 640px;
}

.hero h1 {
  margin-top: 22px;
  font-weight: 700;
}

.wordmark {
  display: block;
  font: 700 clamp(66px, 9.2vw, 142px) / 0.88 var(--font-family-manuscript);
  letter-spacing: -0.045em;
}

.wordmark-cn {
  display: inline-block;
  margin-top: 20px;
  padding-left: 4px;
  color: var(--text-tertiary);
  font: 400 11px/1 var(--font-family-ui);
  letter-spacing: 0.52em;
}

.hero-lead {
  max-width: 33em;
  margin-top: 28px;
  color: var(--text-secondary);
  font-size: 15.5px;
  line-height: 1.95;
}

.hero-env {
  margin-top: 16px;
  color: var(--text-tertiary);
  font: 400 11.5px/1.7 var(--font-family-ui);
  font-variant-numeric: tabular-nums;
}

.hero-env strong {
  color: var(--text-primary);
  font-weight: 500;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 12px;
  margin-top: 30px;
}

.release-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  max-width: 600px;
  margin-top: 36px;
  border-top: 1px solid var(--hairline);
}

.release-facts > div {
  min-width: 0;
  padding: 11px 16px 11px 0;
  border-bottom: 1px solid var(--hairline);
}

.release-facts > div:nth-child(even) {
  padding-left: 18px;
  border-left: 1px solid var(--hairline);
}

.release-facts dt {
  color: var(--text-tertiary);
  font: 400 9.5px/1.5 var(--font-family-ui);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.release-facts dd {
  margin-top: 4px;
  color: var(--text-primary);
  font: 400 12.5px/1.6 var(--font-family-ui);
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}

.release-facts-hash {
  grid-column: 1 / -1;
  padding-left: 0 !important;
  border-left: 0 !important;
}

.release-facts-hash dd {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 10px;
}

.release-facts-hash code {
  font-size: 10.5px;
  line-height: 1.7;
  color: var(--text-secondary);
  overflow-wrap: anywhere;
  user-select: all;
}

.copy-button {
  min-height: 26px;
  padding: 2px 9px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  color: var(--text-secondary);
  font: 400 10px/1.4 var(--font-family-ui);
}

.copy-button:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.copy-status {
  color: var(--success);
  font: 400 10px/1.4 var(--font-family-ui);
}

.copy-status:empty {
  display: none;
}

.release-note {
  max-width: 600px;
  margin-top: 12px;
  color: var(--text-tertiary);
  font: 400 10.5px/1.75 var(--font-family-ui);
}

.hero-visual {
  position: relative;
  align-self: center;
  will-change: transform;
}

.hero-frame {
  position: relative;
  padding: 10px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-5);
  background: var(--surface);
  box-shadow: var(--shadow-float);
  transform: rotate(-1.1deg);
}

.hero-frame .shot {
  border: 0;
  padding: 0;
  box-shadow: none;
  background: transparent;
}

.hero-frame .shot-canvas {
  border-radius: var(--radius-3);
}

.hero-frame .shot-path {
  display: none;
}

.hero-frame .shot figcaption {
  justify-content: flex-start;
}

.float-card {
  position: absolute;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 11px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-2);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  box-shadow: 0 8px 28px color-mix(in srgb, var(--text-primary) 10%, transparent);
  color: var(--text-primary);
  font: 400 10.5px/1.3 var(--font-family-ui);
  white-space: nowrap;
  will-change: transform;
}

.float-muted {
  color: var(--text-tertiary);
}

.float-card--save {
  top: -16px;
  right: 22px;
}

.float-card--candidate {
  bottom: 24px;
  left: -26px;
}

.float-card--task {
  top: 44%;
  right: -22px;
}

.status-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--warning);
}

.status-dot--success {
  background: var(--success);
}

.hero-foot {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--hairline);
  color: var(--text-tertiary);
  font: 400 10.5px/1.5 var(--font-family-ui);
}

.hero-foot-line {
  width: 38px;
  height: 1px;
  background: var(--text-tertiary);
  flex-shrink: 0;
}

.hero-foot a {
  color: var(--text-secondary);
}

.hero-foot-meta {
  margin-left: auto;
}

/* ---- 区块通用 ------------------------------------------------------------ */
.section {
  position: relative;
  overflow: clip;
  padding: var(--section-space) 0;
  border-top: 1px solid var(--hairline);
}

.section-head {
  max-width: 960px;
  margin-bottom: clamp(40px, 5vw, 64px);
}

.section-head h2 {
  margin-top: 18px;
  font: 600 clamp(34px, 4.3vw, 58px) / 1.18 var(--font-family-manuscript);
}

.section-lead {
  max-width: 48em;
  margin-top: 22px;
  color: var(--text-secondary);
  font-size: 14.5px;
  line-height: 1.95;
}

.section-head--split {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  align-items: end;
  gap: 32px 72px;
  max-width: none;
}

.section-head--split .section-lead {
  margin-top: 0;
  padding-bottom: 4px;
}

.section-note {
  max-width: 70em;
  margin-top: 36px;
  padding-top: 16px;
  border-top: 1px solid var(--hairline);
  color: var(--text-tertiary);
  font: 400 11px/1.8 var(--font-family-ui);
}

.section-note a {
  color: var(--text-secondary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.section-ink {
  position: absolute;
  top: 12%;
  right: -18%;
  width: min(58vw, 760px);
  opacity: 0.16;
  pointer-events: none;
  mask-image: radial-gradient(ellipse at 55% 45%, black 0 32%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at 55% 45%, black 0 32%, transparent 70%);
  will-change: transform;
}

.section-ink img {
  width: 100%;
  height: auto;
}

/* ---- 功能与特点 ---------------------------------------------------------- */
.feature-list {
  display: grid;
  gap: clamp(72px, 8vw, 118px);
}

.feature {
  display: grid;
  grid-template-columns: minmax(0, 0.84fr) minmax(0, 1.16fr);
  align-items: center;
  gap: clamp(30px, 5vw, 72px);
}

.feature:nth-child(even) {
  grid-template-columns: minmax(0, 1.16fr) minmax(0, 0.84fr);
}

.feature:nth-child(even) .feature-copy {
  order: 2;
}

.feature:nth-child(even) .feature-visual {
  order: 1;
}

.feature-copy {
  max-width: 480px;
}

.feature-index {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-tertiary);
  font: 400 10px/1.5 var(--font-family-ui);
  letter-spacing: 0.16em;
}

.feature-index span:first-child {
  color: var(--accent);
}

.feature h3 {
  margin-top: 14px;
  font: 600 clamp(27px, 2.6vw, 38px) / 1.25 var(--font-family-manuscript);
}

.feature-copy > p:not(.feature-index):not(.feature-status) {
  margin-top: 16px;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.95;
}

.feature-points {
  display: grid;
  gap: 8px;
  margin-top: 20px;
  padding-left: 14px;
  border-left: 1px solid var(--hairline);
}

.feature-points li {
  position: relative;
  padding-left: 14px;
  color: var(--text-secondary);
  font: 400 12px/1.7 var(--font-family-ui);
}

.feature-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 5px;
  height: 1px;
  background: var(--text-tertiary);
}

.feature-status {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 8px 10px;
  margin-top: 20px;
  color: var(--text-tertiary);
  font: 400 10.5px/1.65 var(--font-family-ui);
}

.status {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  font: 400 9.5px/1.6 var(--font-family-ui);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.status--shipped {
  border-color: color-mix(in srgb, var(--success) 36%, var(--hairline));
  background: var(--success-soft);
  color: var(--success);
}

.status--local {
  border-color: color-mix(in srgb, var(--primary) 34%, var(--hairline));
  background: var(--primary-soft);
  color: var(--primary);
}

.status--preview {
  border-color: color-mix(in srgb, var(--warning) 38%, var(--hairline));
  background: var(--warning-soft);
  color: var(--warning);
}

.feature-visual {
  min-width: 0;
  will-change: transform;
}

/* ---- 截图位 -------------------------------------------------------------- */
.shot {
  margin: 0;
  padding: 10px 10px 0;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-4);
  background: var(--surface);
  box-shadow: 0 26px 70px color-mix(in srgb, var(--text-primary) 9%, transparent);
}

.shot-canvas {
  position: relative;
  aspect-ratio: 1600 / 940;
  overflow: hidden;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-3);
  background-color: var(--bg-sidebar);
  background-image:
    radial-gradient(
      circle at 24% 18%,
      color-mix(in srgb, var(--primary) 8%, transparent) 0,
      transparent 48%
    ),
    radial-gradient(
      circle at 76% 82%,
      color-mix(in srgb, var(--accent) 6%, transparent) 0,
      transparent 52%
    ),
    repeating-linear-gradient(
      0deg,
      color-mix(in srgb, var(--text-primary) 3%, transparent) 0 1px,
      transparent 1px 5px
    );
}

.shot--portrait .shot-canvas {
  aspect-ratio: 940 / 760;
}

.shot-image {
  position: absolute;
  inset: 0;
  z-index: 2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  opacity: 0;
  transition: opacity 0.65s var(--ease-out);
}

.shot.has-shot .shot-image {
  opacity: 1;
}

.shot.is-missing .shot-image {
  display: none;
}

.shot-fallback {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 9%;
  color: color-mix(in srgb, var(--text-tertiary) 62%, transparent);
}

.fallback-svg {
  width: min(78%, 620px);
  max-height: 68%;
}

.shot-fallback-label {
  color: var(--text-tertiary);
  font: 400 9.5px/1.5 var(--font-family-ui);
  letter-spacing: 0.08em;
  text-align: center;
}

.shot figcaption {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 2px 11px;
  color: var(--text-tertiary);
  font: 400 10px/1.5 var(--font-family-ui);
}

.shot-path {
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 9px;
  opacity: 0.7;
  white-space: nowrap;
}

/* ---- 工作流 -------------------------------------------------------------- */
.workflow-list {
  border-top: 1px solid var(--hairline);
}

.workflow-item {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 24px;
  padding: 30px 0;
  border-bottom: 1px solid var(--hairline);
}

.workflow-index {
  color: var(--accent);
  font: 400 11px/1.6 var(--font-family-ui);
  letter-spacing: 0.12em;
  font-variant-numeric: tabular-nums;
}

.workflow-item h3 {
  font: 600 clamp(20px, 1.9vw, 26px) / 1.35 var(--font-family-manuscript);
}

.workflow-item p {
  max-width: 52em;
  margin-top: 10px;
  color: var(--text-secondary);
  font-size: 13.5px;
  line-height: 1.9;
}

/* ---- 可信度 -------------------------------------------------------------- */
.trust-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--hairline);
  background: var(--hairline);
}

.trust-card {
  padding: clamp(24px, 3vw, 38px);
  background: var(--bg-page);
}

.trust-index {
  color: var(--text-tertiary);
  font: 400 10px/1.5 var(--font-family-ui);
  letter-spacing: 0.14em;
}

.trust-card h3 {
  margin-top: 18px;
  font: 600 22px/1.35 var(--font-family-manuscript);
}

.trust-card p {
  margin-top: 10px;
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.9;
}

.limits {
  display: grid;
  grid-template-columns: minmax(0, 0.42fr) minmax(0, 0.58fr);
  gap: 28px 48px;
  margin-top: 48px;
  padding: clamp(24px, 3vw, 36px);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-4);
  background: var(--surface);
}

.limits-head h3 {
  margin-top: 14px;
  font: 600 20px/1.4 var(--font-family-manuscript);
}

.limits-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 30px;
  align-content: start;
}

.limits-list li {
  position: relative;
  padding-left: 16px;
  color: var(--text-secondary);
  font: 400 12px/1.75 var(--font-family-ui);
}

.limits-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 1px;
  background: var(--accent);
}

/* ---- 价格与使用声明 ------------------------------------------------------ */
.section--pricing {
  padding-top: clamp(72px, 8vw, 112px);
  padding-bottom: clamp(72px, 8vw, 112px);
}

.pricing-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(34px, 5.2vw, 74px);
  border-radius: var(--radius-5);
  background: var(--text-primary);
  color: var(--bg-page);
  box-shadow: var(--shadow-float);
}

.pricing-panel::before {
  content: "¥";
  position: absolute;
  right: -0.06em;
  bottom: -0.28em;
  color: color-mix(in srgb, var(--bg-page) 5%, transparent);
  font: 700 34vw/1 var(--font-family-manuscript);
  pointer-events: none;
  user-select: none;
}

.pricing-top {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 32px 56px;
}

.pricing-top h2 {
  margin-top: 18px;
  font: 600 clamp(36px, 4.6vw, 62px) / 1.15 var(--font-family-manuscript);
  color: var(--bg-page);
}

.pricing-lead {
  max-width: 40em;
  margin-top: 18px;
  color: color-mix(in srgb, var(--bg-page) 68%, transparent);
  font-size: 13.5px;
  line-height: 1.9;
}

.price-lockup {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 8px;
  padding-bottom: 8px;
  color: var(--bg-page);
  white-space: nowrap;
}

.price-currency {
  font: 500 22px/1 var(--font-family-manuscript);
  opacity: 0.72;
}

.price-number {
  font: 700 clamp(62px, 7vw, 104px) / 0.9 var(--font-family-manuscript);
  letter-spacing: -0.055em;
  font-variant-numeric: tabular-nums;
}

.price-unit {
  flex-basis: 100%;
  color: color-mix(in srgb, var(--bg-page) 58%, transparent);
  font: 400 10.5px/1.5 var(--font-family-ui);
  letter-spacing: 0.06em;
}

.pricing-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: clamp(32px, 5vw, 72px);
  margin-top: 42px;
  padding-top: 38px;
  border-top: 1px solid color-mix(in srgb, var(--bg-page) 18%, transparent);
}

.pricing-grid h3 {
  margin-bottom: 16px;
  color: var(--bg-page);
  font: 600 19px/1.35 var(--font-family-manuscript);
}

.pricing-flow ol {
  counter-reset: pricing-step;
  display: grid;
  gap: 12px;
}

.pricing-flow li {
  counter-increment: pricing-step;
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  color: color-mix(in srgb, var(--bg-page) 76%, transparent);
  font: 400 12px/1.8 var(--font-family-ui);
}

.pricing-flow li::before {
  content: "0" counter(pricing-step);
  color: color-mix(in srgb, var(--bg-page) 46%, transparent);
  font: 400 9.5px/2.3 var(--font-family-ui);
  letter-spacing: 0.08em;
}

.pricing-note {
  margin-top: 18px;
  padding-left: 14px;
  border-left: 1px solid color-mix(in srgb, var(--warning) 70%, transparent);
  color: color-mix(in srgb, var(--bg-page) 62%, transparent);
  font: 400 11px/1.8 var(--font-family-ui);
}

.pricing-flow .shot {
  margin-top: 24px;
  border-color: color-mix(in srgb, var(--bg-page) 22%, transparent);
  background: var(--bg-page);
  color: var(--text-primary);
  box-shadow: 0 24px 60px color-mix(in srgb, black 20%, transparent);
}

.pricing-flow .shot figcaption {
  color: var(--text-tertiary);
}

.pricing-flow .shot-canvas {
  border-color: var(--hairline);
}

.term-list {
  display: grid;
  gap: 0;
}

.term-list li {
  padding: 10px 0;
  border-bottom: 1px solid color-mix(in srgb, var(--bg-page) 13%, transparent);
  color: color-mix(in srgb, var(--bg-page) 76%, transparent);
  font: 400 11.5px/1.75 var(--font-family-ui);
}

.term-list li:first-child {
  border-top: 1px solid color-mix(in srgb, var(--bg-page) 13%, transparent);
}

.pricing-terms h3 + .term-list + h3 {
  margin-top: 26px;
}

.pricing-foot {
  position: relative;
  margin-top: 38px;
  padding-top: 18px;
  border-top: 1px solid color-mix(in srgb, var(--bg-page) 18%, transparent);
  color: color-mix(in srgb, var(--bg-page) 52%, transparent);
  font: 400 10.5px/1.7 var(--font-family-ui);
}

.pricing-panel a {
  color: var(--bg-page);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---- 常见问题 ------------------------------------------------------------ */
.faq-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(28px, 6vw, 88px);
  align-items: start;
}

.faq-head {
  position: sticky;
  top: calc(var(--header-height) + 28px);
}

.faq-head h2 {
  margin-top: 18px;
  font: 600 clamp(34px, 4vw, 54px) / 1.15 var(--font-family-manuscript);
}

.faq-list {
  border-top: 1px solid var(--hairline);
}

.faq-item {
  border-bottom: 1px solid var(--hairline);
}

.faq-item summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding: 20px 2px;
  color: var(--text-primary);
  font: 500 15px/1.6 var(--font-family-ui);
  list-style: none;
}

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

.faq-mark {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 4px;
  flex-shrink: 0;
}

.faq-mark::before,
.faq-mark::after {
  content: "";
  position: absolute;
  top: 6px;
  left: 0;
  width: 14px;
  height: 1px;
  background: var(--text-tertiary);
  transition: transform 0.3s var(--ease-out);
}

.faq-mark::after {
  transform: rotate(90deg);
}

.faq-item[open] .faq-mark::after {
  transform: rotate(0deg);
}

.faq-item p {
  max-width: 62em;
  padding: 0 40px 22px 2px;
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.95;
}

/* ---- 页脚 ---------------------------------------------------------------- */
.site-footer {
  padding: clamp(52px, 6vw, 76px) 0 30px;
  border-top: 1px solid var(--hairline);
  background: color-mix(in srgb, var(--bg-sidebar) 68%, transparent);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px 64px;
}

.footer-brand {
  display: grid;
  gap: 10px;
}

.brand--footer .brand-mark {
  width: 34px;
  height: 34px;
}

.brand--footer .brand-name {
  font: 600 26px/1.2 var(--font-family-manuscript);
  letter-spacing: -0.02em;
}

.brand--footer .brand-sub {
  font-size: 10px;
}

.footer-line {
  color: var(--text-secondary);
  font: 400 12px/1.7 var(--font-family-ui);
}

.footer-line--muted {
  color: var(--text-tertiary);
  font-size: 10.5px;
}

.footer-qq {
  display: flex;
  align-items: center;
  gap: 18px;
  max-width: 390px;
  padding: 16px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-4);
  background: var(--surface);
}

.footer-qq img {
  width: 104px;
  height: 104px;
  flex-shrink: 0;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-2);
  object-fit: contain;
}

.footer-label {
  color: var(--text-tertiary);
  font: 400 9.5px/1.5 var(--font-family-ui);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.footer-qq-number {
  margin-top: 2px;
  font: 600 24px/1.2 var(--font-family-manuscript);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.footer-qq-note {
  margin-top: 6px;
  color: var(--text-secondary);
  font: 400 10.5px/1.6 var(--font-family-ui);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px 32px;
  margin-top: 48px;
  padding-top: 18px;
  border-top: 1px solid var(--hairline);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  font: 400 11px/1.6 var(--font-family-ui);
}

.footer-nav a {
  color: var(--text-secondary);
}

.footer-nav a:hover {
  color: var(--text-primary);
  text-decoration: none;
}

.footer-meta {
  color: var(--text-tertiary);
  font: 400 9.5px/1.6 var(--font-family-ui);
}

/* ---- 子页 ---------------------------------------------------------------- */
.document-page {
  max-width: 840px;
  padding-top: clamp(40px, 5vw, 64px);
  padding-bottom: clamp(64px, 8vw, 100px);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 28px;
  color: var(--text-secondary);
  font: 400 11px/1.6 var(--font-family-ui);
}

.back-link:hover {
  color: var(--text-primary);
  text-decoration: none;
}

.document-page h1 {
  margin-top: 18px;
  font: 600 clamp(38px, 5vw, 58px) / 1.12 var(--font-family-manuscript);
}

.document-lead {
  max-width: 62em;
  margin-top: 20px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--hairline);
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.95;
}

.document-body {
  max-width: 70em;
}

.document-body section {
  padding-top: 30px;
}

.document-body h2 {
  margin-bottom: 12px;
  font: 600 24px/1.35 var(--font-family-manuscript);
}

.document-body p,
.document-body li {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.95;
}

.document-body p + p {
  margin-top: 10px;
}

.plain-list {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}

.plain-list li {
  position: relative;
  padding-left: 16px;
}

.plain-list li::before {
  content: "";
  position: absolute;
  left: 1px;
  top: 12px;
  width: 5px;
  height: 1px;
  background: var(--text-tertiary);
}

.document-download {
  margin: 6px 0 14px;
  padding: 12px 16px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-3);
  background: var(--surface);
  font-size: 12px !important;
  overflow-wrap: anywhere;
}

.document-download code {
  font-size: 10px;
}

.document-price {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
  margin: 6px 0 16px;
  padding: 16px 20px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-3);
  background: var(--surface);
}

.document-price strong {
  font: 700 34px/1.2 var(--font-family-manuscript);
  font-variant-numeric: tabular-nums;
}

.document-price span {
  color: var(--text-secondary);
  font: 400 11px/1.6 var(--font-family-ui);
}

.document-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  margin-bottom: 18px;
  border-top: 1px solid var(--hairline);
}

.document-facts > div {
  min-width: 0;
  padding: 10px 16px 10px 0;
  border-bottom: 1px solid var(--hairline);
}

.document-facts > div:nth-child(even) {
  padding-left: 16px;
  border-left: 1px solid var(--hairline);
}

.document-facts > div:last-child {
  grid-column: 1 / -1;
  padding-left: 0;
  border-left: 0;
}

.document-facts dt {
  color: var(--text-tertiary);
  font: 400 9.5px/1.5 var(--font-family-ui);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.document-facts dd {
  margin-top: 4px;
  font: 400 12px/1.7 var(--font-family-ui);
  overflow-wrap: anywhere;
}

.document-facts code {
  font-size: 10.5px;
}

.callout {
  margin-top: 14px;
  padding: 12px 16px;
  border-left: 2px solid var(--accent);
  border-radius: 0 var(--radius-2) var(--radius-2) 0;
  background: var(--accent-soft);
  color: var(--text-secondary);
  font: 400 11.5px/1.8 var(--font-family-ui);
}

.release-history {
  display: grid;
  gap: 0;
}

.release-history li {
  display: grid;
  grid-template-columns: 90px 120px minmax(0, 1fr);
  gap: 8px 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--hairline);
  align-items: baseline;
}

.release-history li:first-child {
  border-top: 1px solid var(--hairline);
}

.release-history span {
  color: var(--text-primary);
  font: 500 13px/1.6 var(--font-family-ui);
}

.release-history time {
  color: var(--text-tertiary);
  font: 400 10.5px/1.6 var(--font-family-ui);
  font-variant-numeric: tabular-nums;
}

.release-history p {
  font-size: 11.5px;
}

/* ---- 滚动进入（JS 可用时） ------------------------------------------------ */
.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 0.75s var(--ease-out),
    transform 0.75s var(--ease-out);
}

.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---- 响应式 -------------------------------------------------------------- */
@media (max-width: 1100px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: 36px;
  }
  .release-facts {
    max-width: none;
  }
  .feature {
    gap: 34px;
  }
  .pricing-top {
    grid-template-columns: minmax(0, 1fr);
  }
  .price-lockup {
    padding-bottom: 0;
  }
  .pricing-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 36px;
  }
  .faq-grid {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    gap: 40px;
  }
}

@media (max-width: 900px) {
  :root {
    --header-height: 64px;
  }
  .site-header {
    backdrop-filter: none;
    background: var(--bg-page);
  }
  .header-inner {
    flex-wrap: wrap;
    gap: 8px 20px;
    padding-block: 10px;
  }
  .site-nav {
    order: 3;
    width: 100%;
    margin-left: 0;
    gap: 4px 20px;
    overflow-x: auto;
    padding-bottom: 2px;
    scrollbar-width: none;
  }
  .site-nav::-webkit-scrollbar {
    display: none;
  }
  .header-actions {
    margin-left: auto;
  }
  .hero {
    padding-top: 36px;
  }
  .hero-grid {
    grid-template-columns: minmax(0, 1fr);
    min-height: 0;
    gap: 40px;
  }
  .hero-copy {
    max-width: none;
  }
  .wordmark {
    font-size: clamp(64px, 14vw, 112px);
  }
  .hero-visual {
    max-width: 760px;
  }
  .float-card--candidate {
    left: 14px;
  }
  .float-card--task {
    right: 10px;
  }
  .section-head--split {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
  }
  .section-head--split .section-lead {
    margin-top: 0;
  }
  .feature,
  .feature:nth-child(even) {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }
  .feature:nth-child(even) .feature-copy,
  .feature:nth-child(even) .feature-visual {
    order: initial;
  }
  .feature-copy {
    max-width: 620px;
  }
  .trust-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .limits {
    grid-template-columns: minmax(0, 1fr);
  }
  .faq-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }
  .faq-head {
    position: static;
  }
  .footer-top {
    flex-direction: column;
  }
  .footer-qq {
    max-width: none;
  }
}

@media (max-width: 640px) {
  :root {
    --gutter: 20px;
    --section-space: 72px;
  }
  .brand-sub {
    display: none;
  }
  .header-github span {
    display: none;
  }
  .header-github {
    padding: 0 6px;
  }
  .button--small {
    padding-inline: 11px;
  }
  .wordmark {
    font-size: clamp(58px, 18vw, 86px);
  }
  .wordmark-cn {
    margin-top: 14px;
    letter-spacing: 0.42em;
  }
  .hero-lead {
    font-size: 14.5px;
  }
  .hero-actions {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }
  .hero-actions .button {
    width: 100%;
  }
  .release-facts {
    grid-template-columns: minmax(0, 1fr);
  }
  .release-facts > div:nth-child(even) {
    padding-left: 0;
    border-left: 0;
  }
  .hero-foot {
    flex-wrap: wrap;
  }
  .hero-foot-meta {
    margin-left: 0;
    flex-basis: 100%;
  }
  .float-card--task {
    display: none;
  }
  .float-card--save {
    top: -12px;
    right: 8px;
  }
  .float-card--candidate {
    bottom: 14px;
    left: 6px;
  }
  .shot {
    padding: 6px 6px 0;
  }
  .shot figcaption {
    padding-bottom: 8px;
  }
  .shot-path {
    display: none;
  }
  .limits-list {
    grid-template-columns: minmax(0, 1fr);
  }
  .pricing-panel {
    padding: 24px 20px;
    border-radius: var(--radius-4);
  }
  .price-number {
    font-size: 64px;
  }
  .pricing-grid {
    margin-top: 30px;
    padding-top: 28px;
  }
  .term-list li {
    font-size: 11px;
  }
  .faq-item summary {
    font-size: 14px;
  }
  .footer-qq {
    align-items: flex-start;
  }
  .footer-qq img {
    width: 88px;
    height: 88px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .document-facts {
    grid-template-columns: minmax(0, 1fr);
  }
  .document-facts > div:nth-child(even) {
    padding-left: 0;
    border-left: 0;
  }
  .document-facts > div:last-child {
    grid-column: auto;
  }
  .release-history li {
    grid-template-columns: 72px minmax(0, 1fr);
  }
  .release-history p {
    grid-column: 1 / -1;
  }
}

/* ---- 动效偏好 ------------------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
  .js .reveal {
    opacity: 1;
    transform: none;
  }
  .float-card,
  .hero-ink,
  .hero-wash,
  .hero-dots,
  .section-ink,
  .hero-visual,
  .feature-visual {
    transform: none !important;
  }
}

/* ---- 深色模式的可读性微调 ------------------------------------------------ */
@media (prefers-color-scheme: dark) {
  .hero-ink,
  .section-ink {
    opacity: 0.14;
  }
  .hero-ink img,
  .section-ink img {
    filter: saturate(0.4) brightness(0.9);
  }
  .site-header {
    background: color-mix(in srgb, var(--bg-page) 90%, transparent);
  }
  .pricing-panel {
    box-shadow: none;
  }
}

/* ---- 强制颜色模式 -------------------------------------------------------- */
@media (forced-colors: active) {
  html[data-scroll-hover],
  html[data-scrolling] {
    scrollbar-color: auto;
  }
  .status-dot,
  .eyebrow-dot,
  .feature-points li::before,
  .limits-list li::before,
  .plain-list li::before {
    background: CanvasText;
  }
  .card,
  .button,
  .shot,
  .footer-qq,
  .trust-grid,
  .release-facts,
  .document-facts,
  .document-download,
  .document-price {
    border-color: CanvasText;
  }
}