@charset "UTF-8";

/* =========================================================
   ao3镜面网页版网址 · 全站样式
   设计基调：暖棕 #341103 / 米白 / 浅灰面 / 锐角按钮 / 无阴影
   ========================================================= */

:root {
  --sepia: #341103;
  --sepia-deep: #240b02;
  --sepia-soft: #5d3a28;
  --ink: #3b2417;
  --muted: #6f5b50;
  --bg: #ffffff;
  --surface: #f5f5f5;
  --warm: #fbf5ef;
  --peach: #f7e8dd;
  --line: #e7e0da;
  --line-strong: #d8ccc2;
  --white-40: #fff6;
  --radius-sm: 5px;
  --radius: 10px;
  --container: 1200px;
  --pad-x: clamp(20px, 5vw, 64px);
  --ease: cubic-bezier(0.19, 1, 0.22, 1);
  --ease-out: cubic-bezier(0.075, 0.82, 0.165, 1);
  --font-sans: Geist, Inter, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC",
    sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, "Roboto Mono", Consolas,
    "Liberation Mono", monospace;
  color-scheme: light;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

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

::selection {
  background: #f0dccb;
  color: var(--sepia);
}

img,
svg {
  max-width: 100%;
  height: auto;
}

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

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

:focus-visible {
  outline: 3px solid #000000;
  outline-offset: 2px;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--sepia);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

p {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
}

li {
  list-style: none;
}

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-inline: var(--pad-x);
}

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

.skip-link {
  position: absolute;
  top: 8px;
  left: 8px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--sepia);
  color: #ffffff;
  transform: translateY(-160%);
  transition: transform 0.2s var(--ease);
}

.skip-link:focus {
  transform: translateY(0);
  text-decoration: none;
}

/* ---------- 页头 ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background-color 0.3s var(--ease);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 76px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  color: var(--sepia);
}

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

.brand-mark {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--sepia);
  color: #ffffff;
}

.brand-mark svg {
  width: 19px;
  height: 19px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
  line-height: 1.2;
}

.brand-name {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.brand-sub {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}

.nav-link {
  position: relative;
  padding: 8px 0;
  color: var(--sepia);
  font-size: 15px;
  white-space: nowrap;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width 0.5s var(--ease);
}

.nav-link:hover {
  text-decoration: none;
}

.nav-link:hover::after,
.nav-link[aria-current="page"]::after {
  width: 100%;
}

.nav-link[aria-current="page"] {
  font-weight: 600;
}

.site-nav .nav-cta {
  margin-left: 4px;
  min-height: 44px;
  padding: 0 18px;
  font-size: 14px;
}

.menu-toggle {
  display: none;
  position: relative;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  background: transparent;
  cursor: pointer;
}

.menu-lines,
.menu-lines::before,
.menu-lines::after {
  position: absolute;
  left: 50%;
  width: 18px;
  height: 1.5px;
  background: var(--sepia);
  transform: translateX(-50%);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

.menu-lines {
  top: 50%;
  margin-top: -0.75px;
}

.menu-lines::before,
.menu-lines::after {
  content: "";
  left: 0;
  transform: none;
}

.menu-lines::before {
  top: -6px;
}

.menu-lines::after {
  top: 6px;
}

.menu-toggle[aria-expanded="true"] .menu-lines {
  background: transparent;
}

.menu-toggle[aria-expanded="true"] .menu-lines::before {
  top: 0;
  transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-lines::after {
  top: 0;
  transform: rotate(-45deg);
}

.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: flex;
  flex-direction: column;
  padding: 20px var(--pad-x) 40px;
  background: var(--bg);
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease), visibility 0.3s var(--ease);
}

.mobile-nav.is-open {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 56px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.mobile-close {
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--sepia);
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
}

.mobile-nav nav {
  display: flex;
  flex-direction: column;
  margin-top: 8px;
}

.mobile-nav nav a {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  color: var(--sepia);
  font-size: 19px;
}

.mobile-nav nav a:hover {
  text-decoration: none;
  padding-left: 6px;
  transition: padding-left 0.2s var(--ease);
}

.mobile-note {
  margin-top: auto;
  padding-top: 24px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
}

/* ---------- 按钮 ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 0;
  font-size: 16px;
  line-height: 1.4;
  text-align: center;
  cursor: pointer;
  transition: background-color 0.3s var(--ease), color 0.3s var(--ease),
    border-color 0.3s var(--ease), transform 0.15s ease-out;
}

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

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

.btn-primary {
  background: var(--sepia);
  border-color: var(--sepia);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--sepia-deep);
  border-color: var(--sepia-deep);
  color: #ffffff;
}

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

.btn-secondary:hover {
  background: var(--sepia);
  color: #ffffff;
}

.btn-ghost {
  min-height: 44px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--sepia);
}

.btn-ghost:hover {
  color: var(--sepia);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.btn .arrow {
  transition: transform 0.3s var(--ease);
}

.btn:hover .arrow {
  transform: translateX(4px);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
  font-size: 14px;
}

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

.text-link .arrow {
  transition: transform 0.3s var(--ease);
}

.text-link:hover .arrow {
  transform: translateX(4px);
}

/* ---------- 首页头图 ---------- */

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(44px, 6vw, 84px) 0 clamp(40px, 5vw, 72px);
  background:
    radial-gradient(120% 130% at 82% -20%, #f7e8dd 0%, #fbf3ec 42%, #ffffff 74%);
}

.hero::before {
  content: "";
  position: absolute;
  top: -180px;
  right: -140px;
  width: 520px;
  height: 520px;
  border: 1px solid rgba(52, 17, 3, 0.12);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  top: 60px;
  right: 12%;
  width: 220px;
  height: 220px;
  border: 1px solid rgba(52, 17, 3, 0.08);
  border-radius: 50%;
  pointer-events: none;
}

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

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.55fr);
  align-items: end;
  gap: clamp(32px, 5vw, 72px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.7);
  color: var(--sepia);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  line-height: 1.4;
}

.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--sepia);
}

.hero-title {
  margin-top: 26px;
  font-size: clamp(38px, 5.4vw, 66px);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.025em;
}

.hero-title .hero-title-sub {
  display: block;
  margin-top: 20px;
  color: var(--sepia-soft);
  font-size: clamp(19px, 2.2vw, 27px);
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: 0;
}

.hero-lead {
  max-width: 37em;
  margin-top: 24px;
  color: var(--ink);
  font-size: 16.5px;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-top: 40px;
  padding-top: 22px;
  border-top: 1px solid var(--line-strong);
}

.stat {
  padding-right: 28px;
  margin-right: 28px;
  border-right: 1px solid var(--line-strong);
}

.stat:last-child {
  padding-right: 0;
  margin-right: 0;
  border-right: 0;
}

.stat-num {
  display: block;
  color: var(--sepia);
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1.2;
}

.stat-label {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
}

.hero-card {
  padding: 28px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.86);
}

.hero-card-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  font-weight: 600;
}

.hero-card-title span {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.12em;
}

.hero-card ul {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.hero-card li {
  position: relative;
  padding-left: 18px;
  color: var(--ink);
  font-size: 13.5px;
  line-height: 1.75;
}

.hero-card li::before {
  content: "";
  position: absolute;
  top: 9px;
  left: 0;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--sepia);
}

.hero-card .text-link {
  margin-top: 20px;
}

/* ---------- 通用区块 ---------- */

.section {
  padding: clamp(56px, 7vw, 88px) 0;
}

.section--surface {
  background: var(--surface);
}

.section--warm {
  background: var(--warm);
}

.section--tight {
  padding-top: clamp(40px, 5vw, 64px);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 24px;
  margin-bottom: clamp(28px, 4vw, 44px);
}

.section-label {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  line-height: 1.4;
  text-transform: uppercase;
}

.section-label::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--sepia);
}

.section-title {
  margin-top: 10px;
  font-size: clamp(24px, 3vw, 34px);
}

.section-desc {
  max-width: 44em;
  margin-top: 14px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
}

.section-side {
  align-self: end;
  padding-bottom: 4px;
}

.section--dark {
  background: var(--sepia);
  color: #ffffff;
}

.section--dark h2,
.section--dark h3 {
  color: #ffffff;
}

.section--dark .section-label {
  color: rgba(255, 255, 255, 0.62);
}

.section--dark .section-label::before {
  background: #ffffff;
}

.section--dark .section-desc {
  color: rgba(255, 255, 255, 0.76);
}

.section--dark a {
  color: #ffffff;
}

/* ---------- 入口清单 ---------- */

.list-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-bottom: 24px;
  color: var(--muted);
  font-size: 12.5px;
}

.list-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.list-meta span::before {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--line-strong);
}

.mirror-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.mirror-card {
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 26px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: var(--surface);
  transition: border-color 0.4s var(--ease), transform 0.4s var(--ease),
    background-color 0.4s var(--ease);
}

.mirror-card::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background: var(--white-40);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s var(--ease);
}

.mirror-card:hover {
  transform: translateY(-3px);
  border-color: var(--line-strong);
  background: #faf7f4;
}

.mirror-card:hover::after {
  opacity: 1;
}

.mirror-card > * {
  position: relative;
  z-index: 1;
}

.mirror-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.mirror-index {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.mirror-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #ffffff;
  color: var(--sepia-soft);
  font-size: 11px;
  line-height: 1.4;
  white-space: nowrap;
}

.mirror-domain {
  margin-top: 20px;
  color: var(--sepia);
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: -0.01em;
  overflow-wrap: anywhere;
}

.mirror-url {
  margin-top: 2px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.mirror-desc {
  flex: 1;
  margin: 16px 0 22px;
  color: var(--ink);
  font-size: 13.5px;
  line-height: 1.8;
}

.mirror-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.mirror-note {
  color: var(--muted);
  font-size: 11px;
}

.mirror-go {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--sepia);
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
}

.mirror-go span {
  transition: transform 0.3s var(--ease);
}

.mirror-go:hover {
  text-decoration: none;
}

.mirror-go:hover span {
  transform: translateX(4px);
}

/* 清单内网址与域名：关闭选中、复制与长按菜单 */
.no-copy {
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
  cursor: default;
}

.list-footnote {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.8;
}

.list-footnote p {
  max-width: 58em;
}

.list-footnote strong {
  color: var(--sepia);
  font-weight: 500;
}

/* ---------- 步骤 ---------- */

.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--line);
  background: var(--line);
  gap: 1px;
}

.step {
  padding: 28px 24px;
  background: #ffffff;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  color: var(--sepia);
  font-family: var(--font-mono);
  font-size: 12px;
}

.step h3 {
  margin: 18px 0 10px;
  font-size: 17px;
}

.step p {
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.8;
}

/* ---------- 特性卡片 ---------- */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.feature {
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
}

.feature-label {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
}

.feature h3 {
  margin: 14px 0 10px;
  font-size: 18px;
}

.feature p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
}

/* ---------- 排查清单 ---------- */

.split {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
  align-items: start;
  gap: clamp(28px, 4vw, 56px);
}

.numbered {
  counter-reset: step;
  border-top: 1px solid var(--line);
}

.numbered li {
  counter-increment: step;
  position: relative;
  padding: 20px 0 20px 48px;
  border-bottom: 1px solid var(--line);
}

.numbered li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  top: 22px;
  left: 0;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

.numbered strong {
  display: block;
  margin-bottom: 4px;
  color: var(--sepia);
  font-size: 15.5px;
  font-weight: 600;
}

.numbered p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.aside-card {
  padding: 28px;
  border-radius: var(--radius);
  background: var(--surface);
}

.aside-card h3 {
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-strong);
  font-size: 16px;
}

.aside-card ul {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.aside-card li {
  position: relative;
  padding-left: 20px;
  color: var(--ink);
  font-size: 13.5px;
  line-height: 1.75;
}

.aside-card li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--sepia);
}

/* ---------- 安全（深色） ---------- */

.safety-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 8px;
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.safety-item {
  padding: 28px;
  background: var(--sepia);
}

.safety-item h3 {
  margin-bottom: 10px;
  font-size: 17px;
}

.safety-item p {
  color: rgba(255, 255, 255, 0.74);
  font-size: 13.5px;
  line-height: 1.85;
}

.safety-cta-note {
  max-width: 34em;
  color: rgba(255, 255, 255, 0.68);
  font-size: 13px;
}

.safety-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 28px;
  margin-top: 32px;
}

.section--dark .btn-secondary {
  border-color: rgba(255, 255, 255, 0.7);
  color: #ffffff;
}

.section--dark .btn-secondary:hover {
  background: #ffffff;
  border-color: #ffffff;
  color: var(--sepia);
}

.section--dark :focus-visible {
  outline-color: #ffffff;
}

/* ---------- 术语 ---------- */

.glossary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 56px;
}

.glossary div {
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.glossary dt {
  color: var(--sepia);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 500;
}

.glossary dd {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.8;
}

/* ---------- FAQ ---------- */

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

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

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0;
  color: var(--sepia);
  font-size: 15.5px;
  font-weight: 500;
  line-height: 1.6;
  cursor: pointer;
  list-style: none;
}

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

.faq-item summary::after {
  content: "+";
  flex: 0 0 auto;
  color: var(--sepia);
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 400;
  line-height: 1;
  transition: transform 0.3s var(--ease);
}

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

.faq-item[open] summary {
  padding-bottom: 12px;
}

.faq-answer {
  max-width: 56em;
  padding: 0 0 24px;
  color: var(--ink);
  font-size: 14.5px;
  line-height: 1.9;
}

.faq-answer p + p {
  margin-top: 10px;
}

.faq-answer a {
  border-bottom: 1px solid currentColor;
}

/* ---------- 关于 AO3 / 收录 ---------- */

.about-split {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  align-items: start;
  gap: clamp(32px, 5vw, 64px);
}

.about-split p {
  color: var(--ink);
  font-size: 15px;
  line-height: 1.95;
}

.about-split p + p {
  margin-top: 16px;
}

.curation {
  padding: 30px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--bg);
}

.curation h3 {
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}

.curation ol {
  margin: 16px 0 20px;
  counter-reset: cur;
}

.curation li {
  position: relative;
  counter-increment: cur;
  padding: 0 0 12px 26px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}

.curation li::before {
  content: counter(cur, decimal-leading-zero);
  position: absolute;
  top: 0;
  left: 0;
  color: var(--sepia);
  font-family: var(--font-mono);
  font-size: 11px;
}

/* ---------- 更新记录 ---------- */

.log {
  margin-left: 5px;
  padding-left: 28px;
  border-left: 1px solid var(--line-strong);
}

.log li {
  position: relative;
  padding-bottom: 26px;
}

.log li:last-child {
  padding-bottom: 0;
}

.log li::before {
  content: "";
  position: absolute;
  top: 9px;
  left: -33px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--sepia);
}

.log-date {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
}

.log h3 {
  margin: 4px 0 6px;
  font-size: 15.5px;
}

.log p {
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.8;
}

/* ---------- 链接卡片 ---------- */

.linkcards {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.linkcard {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.linkcard:hover {
  border-color: var(--sepia);
  text-decoration: none;
  transform: translateY(-2px);
}

.linkcard-label {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
}

.linkcard h3 {
  margin: 14px 0 8px;
  font-size: 16px;
}

.linkcard p {
  flex: 1;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.75;
}

.linkcard .arrow {
  margin-top: 16px;
  color: var(--sepia);
  font-size: 14px;
}

/* ---------- 结尾行动区 ---------- */

.cta-band {
  position: relative;
  overflow: hidden;
  padding: clamp(48px, 6vw, 72px) 0;
  background:
    radial-gradient(100% 160% at 50% 0%, #f7e8dd 0%, #fdf6f0 50%, #ffffff 100%);
  border-top: 1px solid var(--line);
}

.cta-band::before {
  content: "";
  position: absolute;
  right: -80px;
  bottom: -160px;
  width: 360px;
  height: 360px;
  border: 1px solid rgba(52, 17, 3, 0.1);
  border-radius: 50%;
}

.cta-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 32px;
}

.cta-inner h2 {
  font-size: clamp(23px, 2.8vw, 30px);
}

.cta-inner p {
  max-width: 42em;
  margin-top: 12px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 页脚 ---------- */

.site-footer {
  padding: clamp(48px, 6vw, 72px) 0 26px;
  border-top: 1px solid var(--line);
  background: #ffffff;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) repeat(3, minmax(0, 0.8fr));
  gap: clamp(28px, 4vw, 48px);
}

.footer-desc {
  max-width: 32em;
  margin-top: 18px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.85;
}

.footer-meta {
  margin-top: 16px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
}

.footer-title {
  color: var(--sepia);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.footer-col ul {
  margin-top: 16px;
}

.footer-col li {
  margin-bottom: 8px;
}

.footer-col a {
  color: var(--muted);
  font-size: 13px;
}

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

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px 32px;
  margin-top: 44px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 11.5px;
  line-height: 1.8;
}

.footer-bottom p {
  max-width: 60em;
}

.to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 40;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  background: #ffffff;
  color: var(--sepia);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.25s var(--ease), visibility 0.25s var(--ease),
    transform 0.25s var(--ease), background-color 0.25s var(--ease);
}

.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.to-top:hover {
  background: var(--sepia);
  border-color: var(--sepia);
  color: #ffffff;
}

/* ---------- 内页 ---------- */

.page-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(36px, 5vw, 64px) 0 clamp(32px, 4vw, 48px);
  background:
    radial-gradient(120% 140% at 88% -30%, #f7e8dd 0%, #fcf6f0 46%, #ffffff 78%);
  border-bottom: 1px solid var(--line);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.breadcrumb a {
  color: var(--muted);
}

.breadcrumb a:hover {
  color: var(--sepia);
}

.breadcrumb .sep {
  color: var(--line-strong);
}

.page-hero h1 {
  max-width: 20em;
  margin-top: 18px;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.2;
}

.page-lead {
  max-width: 46em;
  margin-top: 16px;
  color: var(--ink);
  font-size: 15.5px;
  line-height: 1.9;
}

.page-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: 24px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.03em;
}

.page-meta span::before {
  content: "·";
  margin-right: 8px;
  color: var(--line-strong);
}

.page-meta span:first-child::before {
  display: none;
}

.prose {
  max-width: 820px;
  padding: clamp(40px, 5vw, 64px) 0 clamp(56px, 7vw, 80px);
}

.prose > *:first-child {
  margin-top: 0;
}

.prose h2 {
  margin: 52px 0 16px;
  padding-top: 8px;
  font-size: clamp(21px, 2.2vw, 26px);
  scroll-margin-top: 96px;
}

.prose h2:first-of-type {
  margin-top: 0;
}

.toc {
  margin: 0 0 36px;
  padding: 20px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--warm);
}

.toc-title {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.toc ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 12px 0 0;
  padding: 0;
}

.prose .toc li {
  padding-left: 0;
  margin: 0;
}

.prose .toc li::before {
  display: none;
}

.toc a {
  color: var(--sepia);
  font-size: 13.5px;
  border-bottom: 1px solid transparent;
}

.prose .toc a {
  border-bottom-color: transparent;
}

.prose .toc a:hover {
  border-bottom-color: var(--sepia);
  text-decoration: none;
}

.prose h3 {
  margin: 32px 0 10px;
  font-size: 18px;
  scroll-margin-top: 96px;
}

.prose p {
  margin: 12px 0;
  color: var(--ink);
  font-size: 15px;
  line-height: 1.95;
}

.prose ul,
.prose ol {
  margin: 14px 0 18px;
  padding-left: 2px;
}

.prose ul li {
  position: relative;
  padding-left: 20px;
  margin: 8px 0;
  color: var(--ink);
  font-size: 14.5px;
  line-height: 1.9;
}

.prose ul li::before {
  content: "";
  position: absolute;
  top: 12px;
  left: 2px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--sepia);
}

.prose ol {
  counter-reset: pstep;
}

.prose ol li {
  position: relative;
  counter-increment: pstep;
  padding-left: 30px;
  margin: 10px 0;
  color: var(--ink);
  font-size: 14.5px;
  line-height: 1.9;
}

.prose ol li::before {
  content: counter(pstep, decimal-leading-zero);
  position: absolute;
  top: 1px;
  left: 0;
  color: var(--sepia);
  font-family: var(--font-mono);
  font-size: 12px;
}

.prose strong {
  color: var(--sepia);
  font-weight: 600;
}

.prose a {
  border-bottom: 1px solid currentColor;
}

.prose a:hover {
  text-decoration: none;
}

.prose blockquote {
  margin: 24px 0;
  padding: 4px 0 4px 22px;
  border-left: 2px solid var(--sepia);
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.9;
}

.prose blockquote p {
  color: inherit;
  font-size: inherit;
}

.callout {
  margin: 24px 0;
  padding: 20px 24px;
  border-left: 2px solid var(--sepia);
  background: var(--warm);
}

.callout p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
}

.callout p + p {
  margin-top: 8px;
}

.callout-title {
  display: block;
  margin-bottom: 4px;
  color: var(--sepia);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.table-wrap {
  margin: 22px 0;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
  line-height: 1.7;
}

th,
td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--surface);
  color: var(--sepia);
  font-weight: 600;
  white-space: nowrap;
}

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

td {
  color: var(--ink);
}

.page-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

/* ---------- 跳转确认页 ---------- */

.jump-breadcrumb {
  max-width: 720px;
  margin: 0 auto 24px;
}

.jump-main {
  min-height: 62vh;
  padding: clamp(40px, 6vw, 72px) 0;
  background:
    radial-gradient(120% 120% at 84% -20%, #f7e8dd 0%, #fcf6f0 44%, #ffffff 78%);
}

.jump-card {
  position: relative;
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding: clamp(26px, 4.5vw, 48px);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: #ffffff;
}

.jump-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--sepia);
}

.jump-title {
  margin-top: 16px;
  font-size: clamp(25px, 3.6vw, 34px);
  line-height: 1.3;
}

.jump-title .mono {
  font-family: var(--font-mono);
  font-size: 0.8em;
  letter-spacing: -0.01em;
}

.jump-lead {
  margin-top: 12px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
}

.target-box {
  margin: 26px 0;
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.target-label {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.target-domain {
  margin-top: 8px;
  color: var(--sepia);
  font-family: var(--font-mono);
  font-size: clamp(17px, 2.6vw, 21px);
  font-weight: 500;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.target-url {
  margin-top: 4px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  overflow-wrap: anywhere;
}

.jump-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.jump-actions .btn {
  flex: 1 1 220px;
}

.jump-note {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.jump-note p {
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.8;
}

.jump-note ul {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}

.jump-note li {
  position: relative;
  padding-left: 16px;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.75;
}

.jump-note li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--sepia);
}

.jump-back {
  margin-top: 22px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.8;
}

/* ---------- 404 ---------- */

.error-main {
  display: grid;
  place-items: center;
  min-height: 58vh;
  padding: clamp(48px, 7vw, 88px) 0;
  text-align: center;
  background:
    radial-gradient(100% 120% at 50% 0%, #f7e8dd 0%, #fdf8f3 48%, #ffffff 80%);
}

.error-main .error-code {
  color: var(--sepia);
  font-family: var(--font-mono);
  font-size: clamp(56px, 10vw, 96px);
  line-height: 1;
  letter-spacing: -0.04em;
}

.error-main h1 {
  margin-top: 18px;
  font-size: clamp(22px, 3vw, 30px);
}

.error-main p {
  max-width: 30em;
  margin: 14px auto 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
}

.error-more {
  margin-top: 24px;
  color: var(--muted);
  font-size: 13px;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 28px;
}

/* ---------- 响应式 ---------- */

@media (max-width: 1080px) {
  .site-nav {
    gap: 18px;
  }

  .nav-link {
    font-size: 14px;
  }

  .brand-sub {
    display: none;
  }

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

@media (max-width: 991px) {
  .site-nav {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .hero-card {
    max-width: 560px;
  }

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

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

  .about-split {
    grid-template-columns: 1fr;
  }

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

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

  .cta-inner {
    grid-template-columns: 1fr;
  }

  .glossary {
    gap: 0 32px;
  }
}

@media (max-width: 767px) {
  html {
    scroll-padding-top: 76px;
  }

  .header-inner {
    min-height: 66px;
    gap: 12px;
  }

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

  .brand-name {
    font-size: 15.5px;
    white-space: normal;
    line-height: 1.25;
  }

  .hero {
    padding-top: 36px;
  }

  .hero-title {
    font-size: clamp(30px, 8.8vw, 42px);
  }

  .hero-lead {
    font-size: 15px;
    line-height: 1.85;
  }

  .hero-stats {
    gap: 16px 0;
  }

  .stat {
    flex: 1 1 33.333%;
    padding-right: 10px;
    margin-right: 0;
    border-right: 0;
  }

  .stat-num {
    font-size: 16px;
    letter-spacing: -0.02em;
    white-space: nowrap;
  }

  .stat-label {
    font-size: 11px;
  }

  .hero-card {
    display: none;
  }

  .hero-actions .btn-secondary {
    display: none;
  }

  #mirrors .section-head .section-desc {
    display: none;
  }

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

  .mirror-card {
    padding: 22px;
  }

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

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

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

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

  .section-head {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .section-side {
    align-self: start;
  }

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

  .footer-top {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    display: block;
  }

  .footer-bottom p + p {
    margin-top: 8px;
  }

  .prose h2 {
    margin-top: 40px;
  }

  .page-hero h1 {
    font-size: clamp(26px, 7.4vw, 34px);
  }

  .jump-actions .btn {
    flex: 1 1 100%;
  }

  .to-top {
    right: 14px;
    bottom: 14px;
  }

  .table-wrap {
    border-radius: var(--radius-sm);
  }

  th,
  td {
    padding: 11px 12px;
    font-size: 12.5px;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}