@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;1,400&family=Noto+Serif+SC:wght@300;400;500;600;700;900&family=Noto+Sans+SC:wght@300;400;500&display=swap');

/* ============================================================
   妍霖文化 · 视觉系统
   现代东方编辑风：宣纸、墨、朱砂、苔绿
   ============================================================ */

:root {
  --paper: #f5f1e7;
  --paper-2: #ece6d8;
  --paper-3: #e2d9c7;
  --ink: #16130f;
  --ink-2: #3d382f;
  --muted: #7a7263;
  --line: rgba(22, 19, 15, 0.14);
  --line-strong: rgba(22, 19, 15, 0.24);
  --cinnabar: #a63b27;
  --cinnabar-2: #c4553c;
  --moss: #223a30;
  --moss-2: #2e4a3d;
  --gold: #ae8b4e;

  --serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', 'STSong', 'SimSun', serif;
  --sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --num: 'Cormorant Garamond', 'Noto Serif SC', serif;

  --max: 1280px;
  --pad: clamp(20px, 5vw, 76px);
  --ease: cubic-bezier(0.22, 0.68, 0.16, 1);
}

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.85;
  font-weight: 400;
  letter-spacing: 0.01em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body::selection {
  background: var(--cinnabar);
  color: var(--paper);
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

::selection {
  background: rgba(166, 59, 39, 0.9);
  color: var(--paper);
}

:focus-visible {
  outline: 2px solid var(--cinnabar);
  outline-offset: 4px;
}

.skip {
  position: fixed;
  top: -100px;
  left: 20px;
  z-index: 1000;
  padding: 10px 18px;
  background: var(--ink);
  color: var(--paper);
  font-size: 13px;
  transition: top 0.3s;
}

.skip:focus {
  top: 16px;
}

/* 纸张颗粒 */
.grain {
  position: fixed;
  inset: 0;
  z-index: 90;
  pointer-events: none;
  opacity: 0.05;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.82' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E");
}

.wrap {
  width: min(var(--max), 100%);
  margin: 0 auto;
  padding-inline: var(--pad);
}

/* ============================================================
   顶部导航
   ============================================================ */

.progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: var(--cinnabar);
  z-index: 120;
  transition: width 0.1s linear;
}

.site-head {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: clamp(18px, 3vw, 48px);
  padding: 20px var(--pad);
  border-bottom: 1px solid transparent;
  transition: background 0.4s, padding 0.4s, border-color 0.4s, backdrop-filter 0.4s;
}

.site-head.scrolled {
  padding-block: 12px;
  background: var(--paper);
  border-bottom-color: var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: none;
}

.brand-seal {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1.5px solid var(--cinnabar);
  color: var(--cinnabar);
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 600;
  line-height: 1;
  transform: rotate(-2deg);
  transition: background 0.3s, color 0.3s;
}

.brand:hover .brand-seal {
  background: var(--cinnabar);
  color: var(--paper);
}

.brand-type {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-type b {
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.16em;
}

.brand-type i {
  font-family: var(--num);
  font-style: normal;
  font-size: 9px;
  letter-spacing: 0.28em;
  color: var(--muted);
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.2vw, 34px);
  margin-left: auto;
}

.nav a {
  position: relative;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--ink-2);
  padding: 6px 0;
  transition: color 0.25s;
}

.nav a sup {
  font-family: var(--num);
  font-size: 9px;
  color: var(--cinnabar);
  margin-right: 3px;
  letter-spacing: 0;
}

.nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: var(--cinnabar);
  transition: width 0.35s var(--ease);
}

.nav a:hover {
  color: var(--cinnabar);
}

.nav a:hover::after {
  width: 100%;
}

.head-cta {
  flex: none;
  padding: 9px 20px;
  border: 1px solid var(--ink);
  font-size: 12.5px;
  letter-spacing: 0.12em;
  transition: background 0.3s, color 0.3s, border-color 0.3s;
}

.head-cta:hover {
  background: var(--ink);
  color: var(--paper);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  margin-left: auto;
  position: relative;
}

.nav-toggle span {
  position: absolute;
  left: 9px;
  width: 22px;
  height: 1px;
  background: var(--ink);
  transition: transform 0.3s, opacity 0.3s;
}

.nav-toggle span:nth-child(1) { top: 15px; }
.nav-toggle span:nth-child(2) { top: 21px; }
.nav-toggle span:nth-child(3) { top: 27px; }

body.nav-open .nav-toggle span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
body.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ============================================================
   通用排版
   ============================================================ */

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--muted);
}

.eyebrow::before {
  content: '';
  width: 34px;
  height: 1px;
  background: var(--cinnabar);
}

.sec-head {
  display: grid;
  grid-template-columns: 84px 1fr auto;
  align-items: end;
  gap: 24px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line-strong);
  margin-bottom: clamp(38px, 6vw, 72px);
}

.sec-index {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-family: var(--serif);
  color: var(--cinnabar);
}

.sec-index b {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.22em;
}

.sec-index i {
  font-family: var(--num);
  font-style: normal;
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.2em;
}

.sec-title {
  font-family: var(--serif);
  font-size: clamp(1.9rem, 3.6vw, 3rem);
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: 0.04em;
  margin: 0;
  text-wrap: balance;
}

.sec-title em {
  font-style: normal;
  color: var(--cinnabar);
}

.sec-note {
  max-width: 300px;
  margin: 0 0 6px;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--muted);
  text-align: right;
}

.lede {
  font-family: var(--serif);
  font-size: clamp(1.05rem, 1.5vw, 1.3rem);
  line-height: 2;
  color: var(--ink-2);
  font-weight: 300;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 14px 26px;
  background: var(--ink);
  color: var(--paper);
  font-size: 13px;
  letter-spacing: 0.14em;
  border: 1px solid var(--ink);
  transition: background 0.35s, color 0.35s, transform 0.35s var(--ease);
}

.btn span {
  font-family: var(--num);
  font-size: 15px;
  line-height: 1;
  transition: transform 0.35s var(--ease);
}

.btn:hover {
  background: var(--cinnabar);
  border-color: var(--cinnabar);
  transform: translateY(-2px);
}

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

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

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

.seal-mark {
  display: inline-grid;
  place-items: center;
  writing-mode: vertical-rl;
  padding: 8px 4px;
  border: 1.5px solid var(--cinnabar);
  color: var(--cinnabar);
  font-family: var(--serif);
  font-size: 11px;
  letter-spacing: 0.2em;
  line-height: 1.3;
  transform: rotate(2deg);
}

/* 入场动画 */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
  transition-delay: var(--d, 0ms);
}

.reveal.in {
  opacity: 1;
  transform: none;
}

/* ============================================================
   首屏
   ============================================================ */

.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
  align-items: center;
  gap: 30px;
  padding: 130px var(--pad) 108px;
  overflow: hidden;
  isolation: isolate;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(900px 640px at 82% 18%, rgba(46, 74, 61, 0.14), transparent 65%),
    radial-gradient(720px 520px at 6% 92%, rgba(166, 59, 39, 0.1), transparent 68%),
    linear-gradient(180deg, #f7f3e9 0%, var(--paper) 100%);
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(22, 19, 15, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22, 19, 15, 0.035) 1px, transparent 1px);
  background-size: 92px 92px;
  mask-image: radial-gradient(ellipse 70% 62% at 42% 48%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 70% 62% at 42% 48%, #000 20%, transparent 78%);
}

.hero-copy {
  position: relative;
  max-width: 660px;
}

.hero-kicker {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 26px;
  font-size: 11.5px;
  letter-spacing: 0.24em;
  color: var(--muted);
  opacity: 0;
  animation: rise 0.9s var(--ease) 0.1s forwards;
}

.hero-kicker .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cinnabar);
  box-shadow: 0 0 0 4px rgba(166, 59, 39, 0.12);
}

.hero h1 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 500;
  line-height: 0.98;
  letter-spacing: 0.02em;
}

.hero h1 span {
  display: block;
  font-size: clamp(3.6rem, 8.3vw, 7.4rem);
  opacity: 0;
  animation: rise 1.05s var(--ease) 0.22s forwards;
}

.hero h1 .line-2 {
  color: transparent;
  -webkit-text-stroke: 1.2px rgba(22, 19, 15, 0.72);
  font-weight: 400;
  animation-delay: 0.36s;
  position: relative;
}

.hero h1 .line-2::after {
  content: '。';
  color: var(--cinnabar);
  -webkit-text-stroke: 0;
  font-size: 0.42em;
  vertical-align: super;
  margin-left: 0.06em;
}

.hero-sub {
  max-width: 470px;
  margin: 30px 0 0;
  font-size: 15px;
  line-height: 2.05;
  color: var(--ink-2);
  opacity: 0;
  animation: rise 1s var(--ease) 0.52s forwards;
}

.hero-sub strong {
  font-weight: 500;
  color: var(--ink);
  box-shadow: inset 0 -0.5em 0 rgba(174, 139, 78, 0.24);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 38px;
  opacity: 0;
  animation: rise 1s var(--ease) 0.66s forwards;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin-top: 34px;
  font-size: 12px;
  color: var(--muted);
  opacity: 0;
  animation: rise 1s var(--ease) 0.8s forwards;
}

.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.hero-meta span::before {
  content: '';
  width: 4px;
  height: 4px;
  background: var(--cinnabar);
  transform: rotate(45deg);
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* 右侧视觉 */
.hero-visual {
  position: relative;
  min-height: 600px;
  opacity: 0;
  animation: fadeIn 1.4s var(--ease) 0.45s forwards;
}

@keyframes fadeIn {
  to { opacity: 1; }
}

.hero-sun {
  position: absolute;
  top: 4%;
  right: 6%;
  width: clamp(260px, 33vw, 440px);
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at 38% 34%, rgba(196, 85, 60, 0.96), rgba(166, 59, 39, 0.92) 46%, rgba(138, 43, 28, 0.98));
  box-shadow: 0 30px 90px rgba(166, 59, 39, 0.24);
  opacity: 0.94;
}

.hero-sun::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.7' numOctaves='4'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.35'/%3E%3C/svg%3E");
  opacity: 0.22;
  mix-blend-mode: multiply;
}

.hero-ring {
  position: absolute;
  top: -3%;
  right: 2%;
  width: clamp(290px, 37vw, 490px);
  aspect-ratio: 1;
  border: 1px solid rgba(174, 139, 78, 0.55);
  border-radius: 50%;
  animation: spin 40s linear infinite;
}

.hero-ring::before {
  content: '';
  position: absolute;
  top: 50%;
  left: -3px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
}

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

.phone-stack {
  position: absolute;
  inset: 0;
}

.phone {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 236px;
  height: 486px;
  border-radius: 34px;
  background: #171411;
  padding: 7px;
  box-shadow:
    0 2px 0 rgba(255, 255, 255, 0.12) inset,
    0 30px 60px rgba(20, 16, 12, 0.26),
    0 8px 20px rgba(20, 16, 12, 0.18);
  transform-origin: center;
  transition: transform 0.6s var(--ease);
}

.phone--a {
  z-index: 3;
  transform: translate(-50%, -50%) rotate(-2deg);
}

.phone--b {
  z-index: 2;
  transform: translate(-104%, -50%) rotate(-10deg) scale(0.92);
}

.phone--c {
  z-index: 1;
  transform: translate(6%, -50%) rotate(9deg) scale(0.92);
}

.phone-stack:hover .phone--a {
  transform: translate(-50%, -52%) rotate(0deg);
}

.phone-stack:hover .phone--b {
  transform: translate(-112%, -50%) rotate(-13deg) scale(0.92);
}

.phone-stack:hover .phone--c {
  transform: translate(14%, -50%) rotate(12deg) scale(0.92);
}

.phone-screen {
  position: relative;
  height: 100%;
  border-radius: 28px;
  overflow: hidden;
  background: #fbf7ec;
  display: flex;
  flex-direction: column;
}

.p-status {
  display: flex;
  justify-content: space-between;
  padding: 9px 16px 4px;
  font-size: 8px;
  letter-spacing: 0.08em;
  color: rgba(245, 241, 231, 0.75);
  background: var(--moss);
}

.p-top {
  padding: 4px 16px 16px;
  background: linear-gradient(155deg, var(--moss-2), var(--moss));
  color: var(--paper);
  border-radius: 0 0 18px 18px;
}

.p-brand {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 9px;
  letter-spacing: 0.12em;
  color: rgba(245, 241, 231, 0.7);
}

.p-brand b {
  font-family: var(--serif);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--paper);
}

.p-hello {
  margin-top: 12px;
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 400;
  letter-spacing: 0.04em;
}

.p-hello small {
  display: block;
  margin-top: 2px;
  font-family: var(--sans);
  font-size: 8px;
  letter-spacing: 0.14em;
  color: rgba(245, 241, 231, 0.55);
}

.p-search {
  margin-top: 12px;
  padding: 7px 10px;
  border-radius: 999px;
  background: rgba(245, 241, 231, 0.13);
  font-size: 8px;
  color: rgba(245, 241, 231, 0.6);
  display: flex;
  align-items: center;
  gap: 6px;
}

.p-search i {
  font-style: normal;
  font-size: 9px;
}

.p-body {
  flex: 1;
  padding: 12px;
  overflow: hidden;
}

.p-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 7px;
}

.p-grid div {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  padding: 10px 2px 8px;
  background: #fffdf7;
  border: 1px solid rgba(22, 19, 15, 0.06);
  border-radius: 10px;
  font-size: 7px;
  letter-spacing: 0.05em;
  color: var(--ink-2);
}

.p-grid i {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(34, 58, 48, 0.09);
  color: var(--moss);
  font-family: var(--serif);
  font-size: 11px;
  font-style: normal;
}

.p-grid div:nth-child(2) i { background: rgba(166, 59, 39, 0.1); color: var(--cinnabar); }

.p-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 12px 1px 6px;
  font-size: 8px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.p-label b {
  color: var(--ink);
  font-family: var(--serif);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.12em;
}

.p-card {
  padding: 9px 10px;
  border-left: 2px solid var(--cinnabar);
  background: #fffdf7;
  border-radius: 0 8px 8px 0;
  box-shadow: 0 2px 8px rgba(22, 19, 15, 0.04);
}

.p-card b {
  display: block;
  font-family: var(--serif);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.06em;
}

.p-card span {
  display: block;
  margin-top: 2px;
  font-size: 7px;
  color: var(--muted);
}

.p-progress {
  margin-top: 7px;
  height: 3px;
  border-radius: 2px;
  background: rgba(22, 19, 15, 0.08);
  overflow: hidden;
}

.p-progress i {
  display: block;
  width: 62%;
  height: 100%;
  background: var(--cinnabar);
}

.p-tabbar {
  display: flex;
  justify-content: space-around;
  padding: 8px 6px 12px;
  border-top: 1px solid rgba(22, 19, 15, 0.07);
  background: #fffdf7;
  font-size: 7px;
  color: var(--muted);
}

.p-tabbar b {
  color: var(--cinnabar);
  font-weight: 500;
}

/* 第二个手机：必背 60 篇 */
.p-list-top {
  padding: 4px 16px 12px;
  background: var(--paper-2);
  border-bottom: 1px solid rgba(22, 19, 15, 0.07);
}

.p-list-top h4 {
  margin: 6px 0 0;
  font-family: var(--serif);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.1em;
}

.p-chips {
  display: flex;
  gap: 5px;
  margin-top: 8px;
}

.p-chips span {
  padding: 3px 7px;
  border: 1px solid rgba(22, 19, 15, 0.14);
  border-radius: 999px;
  font-size: 6.5px;
  color: var(--muted);
}

.p-chips span.on {
  background: var(--moss);
  border-color: var(--moss);
  color: var(--paper);
}

.p-ring {
  position: relative;
  width: 52px;
  height: 52px;
  margin: 2px auto 10px;
  border-radius: 50%;
  background: conic-gradient(var(--cinnabar) 0 63%, rgba(22, 19, 15, 0.08) 63% 100%);
  display: grid;
  place-items: center;
}

.p-ring::before {
  content: '';
  position: absolute;
  inset: 6px;
  border-radius: 50%;
  background: #fbf7ec;
}

.p-ring b {
  position: relative;
  font-family: var(--num);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}

.p-poem {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 2px;
  border-bottom: 1px solid rgba(22, 19, 15, 0.07);
}

.p-poem b {
  display: block;
  font-family: var(--serif);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.06em;
}

.p-poem span {
  font-size: 6.5px;
  color: var(--muted);
}

.p-poem i {
  font-style: normal;
  font-family: var(--serif);
  font-size: 7px;
  padding: 2px 5px;
  border: 1px solid rgba(166, 59, 39, 0.3);
  color: var(--cinnabar);
  border-radius: 3px;
}

/* 第三个手机：AI 辅导 */
.p-chat {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 12px 12px 6px;
  background: #f6f1e4;
}

.p-chat .who {
  font-size: 7px;
  color: var(--muted);
  letter-spacing: 0.08em;
}

.bubble {
  max-width: 86%;
  padding: 8px 10px;
  border-radius: 10px;
  font-size: 8px;
  line-height: 1.7;
}

.bubble.user {
  align-self: flex-end;
  background: var(--moss);
  color: var(--paper);
  border-bottom-right-radius: 3px;
}

.bubble.ai {
  align-self: flex-start;
  background: #fffdf7;
  border: 1px solid rgba(22, 19, 15, 0.06);
  border-bottom-left-radius: 3px;
}

.bubble.ai b {
  color: var(--cinnabar);
  font-weight: 500;
}

.p-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  padding: 8px 12px 12px;
  background: #f6f1e4;
}

.p-quick span {
  padding: 3px 6px;
  border: 1px solid rgba(166, 59, 39, 0.24);
  border-radius: 999px;
  font-size: 6.5px;
  color: var(--cinnabar);
}

/* 首屏数据条 */
.hero-rail {
  position: absolute;
  left: var(--pad);
  right: var(--pad);
  bottom: 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line-strong);
  padding-top: 16px;
  gap: 18px;
  opacity: 0;
  animation: fadeIn 1.2s var(--ease) 1s forwards;
}

.hero-rail div {
  display: flex;
  align-items: baseline;
  gap: 9px;
}

.hero-rail b {
  font-family: var(--num);
  font-size: 30px;
  font-weight: 500;
  line-height: 1;
  color: var(--ink);
}

.hero-rail span {
  font-size: 11.5px;
  color: var(--muted);
  letter-spacing: 0.08em;
}

/* ============================================================
   产品：语你同行
   ============================================================ */

.section {
  padding: clamp(78px, 10vw, 148px) 0;
}

section[id] {
  scroll-margin-top: 84px;
}

.product {
  background: linear-gradient(180deg, var(--paper) 0%, var(--paper-2) 100%);
  border-top: 1px solid var(--line);
}

.product-top {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: clamp(36px, 6vw, 90px);
  align-items: start;
}

.product-intro h3 {
  margin: 0 0 18px;
  font-family: var(--serif);
  font-size: clamp(1.6rem, 2.6vw, 2.3rem);
  font-weight: 500;
  letter-spacing: 0.05em;
}

.product-intro h3 em {
  font-style: normal;
  color: var(--cinnabar);
}

.product-intro h3 small {
  display: block;
  margin-top: 8px;
  font-family: var(--num);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--muted);
  text-transform: uppercase;
}

.product-intro p {
  margin: 0 0 16px;
  color: var(--ink-2);
  font-size: 14.5px;
  line-height: 2.05;
}

.product-quote {
  margin: 28px 0 0;
  padding: 18px 0 18px 22px;
  border-left: 2px solid var(--cinnabar);
  font-family: var(--serif);
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink);
}

.product-quote cite {
  display: block;
  margin-top: 8px;
  font-family: var(--sans);
  font-style: normal;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.modules {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 28px;
  border-top: 1px solid var(--line-strong);
}

.module {
  position: relative;
  padding: 18px 0 16px;
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 10px;
  transition: background 0.35s, padding 0.35s;
}

.module:hover {
  background: rgba(255, 253, 247, 0.6);
}

.module-num {
  font-family: var(--num);
  font-size: 13px;
  color: var(--cinnabar);
  letter-spacing: 0.06em;
  padding-top: 2px;
}

.module h4 {
  margin: 0 0 3px;
  font-family: var(--serif);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.06em;
}

.module p {
  margin: 0;
  font-size: 11.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* 产品画面 */
.product-stage {
  position: relative;
  margin-top: 10px;
  padding: 30px 0 0;
}

.stage-frame {
  position: relative;
  border: 1px solid var(--line-strong);
  background:
    linear-gradient(180deg, rgba(255, 253, 247, 0.5), rgba(236, 230, 216, 0.3)),
    url("https://trae-api-cn.mchost.guru/api/ide/v1/text_to_image?prompt=minimal%20Chinese%20ink%20wash%20landscape%2C%20layered%20distant%20mountains%20in%20mist%2C%20rice%20paper%20texture%2C%20muted%20moss%20green%20and%20warm%20cream%20tones%2C%20quiet%20editorial%20photography%2C%20no%20text&image_size=landscape_16_9") center / cover no-repeat;
  background-blend-mode: multiply;
  overflow: hidden;
}

.stage-frame::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(245, 241, 231, 0.9), rgba(245, 241, 231, 0.2) 45%, rgba(245, 241, 231, 0.55));
}

.stage-inner {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  align-items: end;
  padding: 46px 30px 0;
  min-height: 460px;
}

.stage-phone {
  position: relative;
  justify-self: center;
  width: 190px;
  height: 392px;
  border-radius: 28px;
  background: #171411;
  padding: 6px;
  box-shadow: 0 24px 50px rgba(20, 16, 12, 0.22);
  transform: translateY(26px);
  transition: transform 0.5s var(--ease);
}

.stage-phone:nth-child(2) {
  transform: translateY(0);
  z-index: 2;
}

.stage-phone:hover {
  transform: translateY(12px);
}

.stage-phone:nth-child(2):hover {
  transform: translateY(-14px);
}

.stage-phone .phone-screen {
  border-radius: 23px;
}

.stage-phone .p-grid {
  gap: 5px;
}

.stage-phone .p-grid div {
  padding: 8px 1px 6px;
  font-size: 6px;
}

.stage-phone .p-grid i {
  width: 21px;
  height: 21px;
  font-size: 10px;
}

.stage-phone .p-hello {
  font-size: 16px;
}

.stage-phone .p-card b {
  font-size: 9px;
}

.stage-caption {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 4px 18px;
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.08em;
}

.stage-caption b {
  font-family: var(--serif);
  font-weight: 500;
  color: var(--ink);
  letter-spacing: 0.12em;
}

/* 诗句跑马灯 */
.marquee {
  margin-top: 26px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  padding: 14px 0;
}

.marquee-track {
  display: flex;
  gap: 56px;
  width: max-content;
  animation: slide 38s linear infinite;
}

.marquee-track span {
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--muted);
  white-space: nowrap;
}

.marquee-track span em {
  font-style: normal;
  color: var(--cinnabar);
  margin-right: 10px;
}

@keyframes slide {
  to { transform: translateX(-50%); }
}

/* ============================================================
   行业水位（深色）
   ============================================================ */

.insight {
  position: relative;
  background: var(--ink);
  color: var(--paper);
  overflow: hidden;
  overflow: clip;
}

.insight::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(700px 500px at 88% 12%, rgba(166, 59, 39, 0.22), transparent 70%),
    radial-gradient(600px 400px at 6% 88%, rgba(46, 74, 61, 0.5), transparent 70%);
  pointer-events: none;
}

.insight .sec-head {
  position: relative;
  border-bottom-color: rgba(245, 241, 231, 0.2);
}

.insight .sec-index {
  color: var(--cinnabar-2);
}

.insight .sec-index i,
.insight .sec-note {
  color: rgba(245, 241, 231, 0.5);
}

.insight .sec-title {
  color: var(--paper);
}

.insight .sec-title em {
  color: var(--cinnabar-2);
}

.insight-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(245, 241, 231, 0.16);
  border-left: 1px solid rgba(245, 241, 231, 0.16);
}

.stat {
  padding: 30px 24px 26px;
  border-right: 1px solid rgba(245, 241, 231, 0.16);
  border-bottom: 1px solid rgba(245, 241, 231, 0.16);
  transition: background 0.4s;
}

.stat:hover {
  background: rgba(245, 241, 231, 0.04);
}

.stat-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: rgba(245, 241, 231, 0.48);
}

.stat-label i {
  font-family: var(--num);
  font-style: normal;
  font-size: 12px;
  color: var(--cinnabar-2);
}

.stat-value {
  display: flex;
  align-items: baseline;
  gap: 5px;
  margin: 16px 0 6px;
  font-family: var(--num);
  font-weight: 400;
  line-height: 1;
}

.stat-value b {
  font-size: clamp(2.4rem, 4vw, 3.6rem);
  font-weight: 500;
  letter-spacing: -0.01em;
}

.stat-value span {
  font-size: 16px;
  color: rgba(245, 241, 231, 0.6);
}

.stat-desc {
  margin: 0;
  font-size: 11.5px;
  line-height: 1.8;
  color: rgba(245, 241, 231, 0.55);
}

.stat-desc a {
  color: rgba(245, 241, 231, 0.78);
  border-bottom: 1px solid rgba(245, 241, 231, 0.25);
  transition: color 0.2s, border-color 0.2s;
}

.stat-desc a:hover {
  color: var(--cinnabar-2);
  border-color: var(--cinnabar-2);
}

.insight-foot {
  position: relative;
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 30px;
  margin-top: 52px;
  align-items: stretch;
}

.policy {
  position: relative;
  padding: 28px 30px;
  border: 1px solid rgba(245, 241, 231, 0.18);
  background: rgba(245, 241, 231, 0.03);
}

.policy .seal-mark {
  position: absolute;
  top: 24px;
  right: 26px;
  border-color: var(--cinnabar-2);
  color: var(--cinnabar-2);
  opacity: 0.8;
}

.policy h4 {
  margin: 0 0 10px;
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 500;
  letter-spacing: 0.06em;
}

.policy p {
  margin: 0;
  max-width: 480px;
  font-size: 13px;
  line-height: 2;
  color: rgba(245, 241, 231, 0.62);
}

.insight-quote {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 28px 30px;
  background: var(--cinnabar);
  color: #f9f4e8;
}

.insight-quote blockquote {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.85;
  letter-spacing: 0.04em;
}

.insight-quote cite {
  margin-top: 20px;
  font-style: normal;
  font-size: 11px;
  letter-spacing: 0.16em;
  opacity: 0.75;
}

.insight .src-note {
  position: relative;
  margin: 24px 0 0;
  font-size: 10.5px;
  letter-spacing: 0.04em;
  color: rgba(245, 241, 231, 0.36);
}

/* ============================================================
   战略：一核三翼
   ============================================================ */

.strategy {
  background: linear-gradient(180deg, var(--paper) 0%, #f2ecdd 100%);
}

.strategy-head {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(30px, 6vw, 80px);
  align-items: end;
  margin-bottom: clamp(44px, 6vw, 72px);
}

.strategy-head .sec-title {
  max-width: 560px;
  font-size: clamp(1.75rem, 3.1vw, 2.6rem);
}

.strategy-head p {
  margin: 0 0 4px;
  max-width: 420px;
  justify-self: end;
  font-size: 13.5px;
  line-height: 2.05;
  color: var(--ink-2);
}

.core-panel {
  position: relative;
  display: grid;
  grid-template-columns: 150px 1fr 220px;
  align-items: center;
  gap: 30px;
  padding: clamp(28px, 4vw, 46px);
  background: var(--moss);
  color: var(--paper);
  overflow: hidden;
}

.core-panel::before {
  content: '';
  position: absolute;
  right: -80px;
  top: -120px;
  width: 340px;
  height: 340px;
  border: 1px solid rgba(245, 241, 231, 0.14);
  border-radius: 50%;
}

.core-panel::after {
  content: '';
  position: absolute;
  right: -30px;
  top: -70px;
  width: 240px;
  height: 240px;
  border: 1px solid rgba(245, 241, 231, 0.1);
  border-radius: 50%;
}

.core-tag {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 16px;
  border-left: 1px solid rgba(245, 241, 231, 0.3);
}

.core-tag b {
  font-family: var(--serif);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.22em;
}

.core-tag span {
  font-family: var(--num);
  font-size: 10px;
  letter-spacing: 0.24em;
  color: rgba(245, 241, 231, 0.5);
}

.core-main h3 {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-size: clamp(1.7rem, 3vw, 2.5rem);
  font-weight: 500;
  letter-spacing: 0.06em;
}

.core-main h3 em {
  font-style: normal;
  color: var(--gold);
}

.core-main p {
  margin: 0;
  max-width: 480px;
  font-size: 12.5px;
  line-height: 1.95;
  color: rgba(245, 241, 231, 0.6);
}

.core-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 16px;
}

.core-chips span {
  padding: 4px 10px;
  border: 1px solid rgba(245, 241, 231, 0.24);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: rgba(245, 241, 231, 0.78);
}

.core-side {
  position: relative;
  z-index: 1;
  text-align: right;
}

.core-side .big {
  font-family: var(--num);
  font-size: 58px;
  line-height: 1;
  color: var(--cinnabar-2);
}

.core-side p {
  margin: 8px 0 0;
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: rgba(245, 241, 231, 0.5);
}

.wings {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-left: 1px solid var(--line-strong);
}

.wing {
  position: relative;
  padding: 32px 28px 30px;
  border-right: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
  background: rgba(255, 253, 247, 0.34);
  transition: background 0.4s;
}

.wing::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  width: 1px;
  height: 26px;
  background: var(--line-strong);
  transform: translateY(-100%);
}

.wing:hover {
  background: #fffdf7;
}

.wing-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.wing-tag b {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border: 1px solid var(--cinnabar);
  color: var(--cinnabar);
  font-family: var(--serif);
  font-size: 12px;
  font-weight: 500;
}

.wing h4 {
  margin: 16px 0 8px;
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.wing p {
  margin: 0;
  font-size: 12px;
  line-height: 1.9;
  color: var(--muted);
}

.wing ul {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.wing li {
  position: relative;
  padding: 5px 0 5px 14px;
  font-size: 11.5px;
  color: var(--ink-2);
}

.wing li::before {
  content: '·';
  position: absolute;
  left: 0;
  color: var(--cinnabar);
  font-size: 16px;
  line-height: 1.2;
}

/* ============================================================
   业务版图
   ============================================================ */

.business {
  background: var(--paper);
}

.biz-flow {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 18px;
  border: 1px solid var(--line-strong);
  overflow: hidden;
}

.biz-flow div {
  flex: 1;
  padding: 12px 10px;
  text-align: center;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ink-2);
  border-right: 1px solid var(--line);
  position: relative;
}

.biz-flow div:last-child {
  border-right: 0;
}

.biz-flow div b {
  display: block;
  font-family: var(--num);
  font-size: 9px;
  letter-spacing: 0.2em;
  color: var(--cinnabar);
  margin-bottom: 2px;
}

.biz-flow div:not(:last-child)::after {
  content: '→';
  position: absolute;
  right: -7px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 10px;
  color: var(--muted);
  background: var(--paper);
  padding: 0 1px;
  z-index: 1;
}

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

.biz-row {
  position: relative;
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr) 300px 46px;
  gap: 24px;
  align-items: center;
  padding: 26px 20px 26px 8px;
  border-bottom: 1px solid var(--line);
  transition: background 0.45s, color 0.45s, padding 0.45s var(--ease);
}

.biz-row:hover {
  background: var(--ink);
  color: var(--paper);
  padding-left: 22px;
}

.biz-row:hover .biz-desc,
.biz-row:hover .biz-tags span,
.biz-row:hover .biz-idx span {
  color: rgba(245, 241, 231, 0.55);
}

.biz-row:hover .biz-tags span {
  border-color: rgba(245, 241, 231, 0.25);
}

.biz-idx {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.biz-idx b {
  font-family: var(--num);
  font-size: 30px;
  font-weight: 400;
  line-height: 1;
  color: var(--cinnabar);
  transition: color 0.4s;
}

.biz-row:hover .biz-idx b {
  color: var(--cinnabar-2);
}

.biz-idx span {
  font-size: 9px;
  letter-spacing: 0.16em;
  color: var(--muted);
  transition: color 0.4s;
}

.biz-main h3 {
  margin: 0 0 5px;
  font-family: var(--serif);
  font-size: clamp(19px, 2.2vw, 25px);
  font-weight: 500;
  letter-spacing: 0.05em;
}

.biz-main h3 small {
  font-family: var(--sans);
  font-size: 10.5px;
  font-weight: 400;
  letter-spacing: 0.14em;
  color: var(--muted);
  margin-left: 10px;
  transition: color 0.4s;
}

.biz-row:hover .biz-main h3 small {
  color: rgba(245, 241, 231, 0.5);
}

.biz-desc {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.85;
  color: var(--muted);
  transition: color 0.4s;
}

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

.biz-tags span {
  padding: 3px 9px;
  border: 1px solid var(--line-strong);
  font-size: 10px;
  color: var(--ink-2);
  transition: border-color 0.4s, color 0.4s;
}

.biz-arrow {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  font-family: var(--num);
  font-size: 15px;
  transition: transform 0.45s var(--ease), border-color 0.4s, background 0.4s;
}

.biz-row:hover .biz-arrow {
  transform: translateX(4px) rotate(-45deg);
  border-color: var(--cinnabar-2);
  background: var(--cinnabar);
  color: var(--paper);
}

.biz-visual {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 44px;
}

.biz-visual figure {
  margin: 0;
  border: 1px solid var(--line-strong);
  background: var(--paper-2);
  overflow: hidden;
}

.biz-visual img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(0.76) contrast(1.02) sepia(0.06);
  transition: transform 0.8s var(--ease), filter 0.6s;
}

.biz-visual figure:hover img {
  transform: scale(1.035);
  filter: saturate(0.94) contrast(1.03) sepia(0);
}

.biz-visual figcaption {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  padding: 13px 15px;
  border-top: 1px solid var(--line);
}

.biz-visual figcaption b {
  font-family: var(--serif);
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.biz-visual figcaption span {
  font-size: 9.5px;
  letter-spacing: 0.04em;
  color: var(--muted);
  text-align: right;
}

/* ============================================================
   路线图
   ============================================================ */

.roadmap {
  position: relative;
  background: var(--paper-2);
  border-top: 1px solid var(--line);
  overflow: hidden;
  overflow: clip;
}

.roadmap::before {
  content: '路';
  position: absolute;
  right: 2%;
  top: 10%;
  font-family: var(--serif);
  font-size: 34vw;
  line-height: 1;
  color: rgba(22, 19, 15, 0.028);
  pointer-events: none;
}

.roadmap .sec-head {
  position: relative;
}

.road-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0 24px;
}

.road-grid::before {
  content: '';
  position: absolute;
  top: 39px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--line-strong);
}

.road-card {
  position: relative;
  padding-top: 64px;
}

.road-card::before {
  content: '';
  position: absolute;
  top: 34px;
  left: 0;
  width: 9px;
  height: 9px;
  border: 1px solid var(--cinnabar);
  background: var(--paper-2);
  transform: rotate(45deg);
  z-index: 1;
}

.road-card.now::before {
  background: var(--cinnabar);
}

.road-year {
  font-family: var(--num);
  font-size: clamp(38px, 4.6vw, 62px);
  font-weight: 400;
  line-height: 1;
  color: rgba(22, 19, 15, 0.22);
  letter-spacing: 0.02em;
  transition: color 0.4s;
}

.road-card.now .road-year {
  color: var(--cinnabar);
}

.road-card:hover .road-year {
  color: var(--ink);
}

.road-phase {
  display: inline-block;
  margin: 8px 0 12px;
  font-family: var(--serif);
  font-size: 19px;
  letter-spacing: 0.1em;
}

.road-card.now .road-phase::after {
  content: '进行中';
  display: inline-block;
  margin-left: 8px;
  padding: 1px 5px;
  border: 1px solid var(--cinnabar);
  color: var(--cinnabar);
  font-family: var(--sans);
  font-size: 8px;
  letter-spacing: 0.1em;
  vertical-align: middle;
}

.road-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.road-card li {
  position: relative;
  padding: 9px 0 9px 14px;
  font-size: 12px;
  line-height: 1.75;
  color: var(--ink-2);
  border-bottom: 1px solid var(--line);
}

.road-card li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 18px;
  width: 5px;
  height: 1px;
  background: var(--cinnabar);
}

.road-kpi {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 12px;
}

.road-kpi span {
  padding: 2px 7px;
  background: rgba(22, 19, 15, 0.06);
  font-size: 9.5px;
  color: var(--muted);
}

.road-note {
  margin: 34px 0 0;
  font-size: 10.5px;
  color: var(--muted);
  letter-spacing: 0.05em;
}

/* ============================================================
   商业模型
   ============================================================ */

.model {
  background: var(--paper);
  border-top: 1px solid var(--line);
}

.model-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(40px, 7vw, 100px);
  align-items: center;
}

.donut-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.donut {
  position: relative;
  width: min(300px, 70vw);
  aspect-ratio: 1;
  border-radius: 50%;
  background: conic-gradient(
    from -22deg,
    var(--cinnabar) 0 35%,
    var(--moss) 35% 60%,
    var(--gold) 60% 80%,
    #6c7f73 80% 95%,
    #c9bfa8 95% 100%
  );
  box-shadow: 0 24px 50px rgba(22, 19, 15, 0.12);
}

.donut::before {
  content: '';
  position: absolute;
  inset: 20%;
  border-radius: 50%;
  background: var(--paper);
}

.donut-center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  z-index: 1;
}

.donut-center b {
  font-family: var(--num);
  font-size: 40px;
  font-weight: 500;
  line-height: 1;
}

.donut-center span {
  margin-top: 4px;
  font-size: 9.5px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.donut-note {
  font-size: 10.5px;
  color: var(--muted);
  text-align: center;
  letter-spacing: 0.05em;
}

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

.rev {
  display: grid;
  grid-template-columns: 12px minmax(0, 1fr) 92px;
  align-items: center;
  gap: 14px;
  padding: 17px 0;
  border-bottom: 1px solid var(--line);
}

.rev-dot {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  transform: rotate(45deg);
}

.rev-main b {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.05em;
}

.rev-main b i {
  font-family: var(--num);
  font-style: normal;
  font-size: 11px;
  color: var(--muted);
}

.rev-main p {
  margin: 2px 0 0;
  font-size: 11.5px;
  color: var(--muted);
  line-height: 1.7;
}

.rev-bar {
  height: 3px;
  background: rgba(22, 19, 15, 0.08);
  position: relative;
}

.rev-bar i {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: var(--w);
  background: var(--c);
}

.rev-pct {
  grid-column: 3;
  font-family: var(--num);
  font-size: 16px;
  color: var(--ink-2);
  text-align: right;
  line-height: 1;
}

.model-side {
  margin-top: 34px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--line-strong);
}

.model-side div {
  padding: 18px;
  border-right: 1px solid var(--line);
}

.model-side div:last-child {
  border-right: 0;
}

.model-side b {
  display: block;
  font-family: var(--serif);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 3px;
}

.model-side span {
  font-size: 10.5px;
  color: var(--muted);
  line-height: 1.7;
}

/* ============================================================
   关于
   ============================================================ */

.about {
  background: var(--paper-2);
  border-top: 1px solid var(--line);
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(36px, 6vw, 90px);
  align-items: center;
}

.about-figure {
  position: relative;
  padding: 16px 16px 0 0;
}

.about-figure::before {
  content: '';
  position: absolute;
  inset: 0 0 20px 20px;
  border: 1px solid var(--gold);
  pointer-events: none;
}

.about-figure img {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  filter: saturate(0.72) contrast(1.02) sepia(0.08);
}

.about-figure figcaption {
  position: absolute;
  right: 0;
  bottom: 0;
  padding: 18px;
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--muted);
  background: var(--paper-2);
}

.about-figure .seal-mark {
  position: absolute;
  top: 26px;
  left: 26px;
  background: rgba(245, 241, 231, 0.85);
}

.about-text h3 {
  margin: 0 0 18px;
  font-family: var(--serif);
  font-size: clamp(1.6rem, 2.6vw, 2.3rem);
  font-weight: 500;
  letter-spacing: 0.05em;
}

.about-text p {
  margin: 0 0 14px;
  font-size: 13.5px;
  line-height: 2.05;
  color: var(--ink-2);
}

.about-text .pull {
  margin: 26px 0;
  font-family: var(--serif);
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.9;
  letter-spacing: 0.03em;
  color: var(--ink);
  text-indent: 0;
}

.about-text .pull::before {
  content: '“';
  color: var(--cinnabar);
  margin-right: 2px;
  font-size: 1.4em;
  vertical-align: -0.12em;
}

.signature {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.signature b {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 400;
  letter-spacing: 0.18em;
}

.signature span {
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.brand-values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 50px;
  background: var(--line);
  border: 1px solid var(--line);
}

.value {
  padding: 22px 20px;
  background: var(--paper-2);
}

.value b {
  font-family: var(--serif);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.1em;
}

.value span {
  display: block;
  margin-top: 6px;
  font-size: 11px;
  line-height: 1.8;
  color: var(--muted);
}

/* ============================================================
   合作与页脚
   ============================================================ */

.contact {
  position: relative;
  padding: clamp(80px, 10vw, 140px) 0 60px;
  background: var(--ink);
  color: var(--paper);
  overflow: hidden;
}

.contact::before {
  content: '';
  position: absolute;
  right: -10%;
  bottom: -40%;
  width: 70vw;
  height: 70vw;
  border: 1px solid rgba(245, 241, 231, 0.08);
  border-radius: 50%;
}

.contact-top {
  position: relative;
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 40px;
  align-items: end;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(245, 241, 231, 0.18);
}

.contact-top h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.9rem, 3.2vw, 3rem);
  font-weight: 400;
  line-height: 1.3;
  letter-spacing: 0.04em;
}

.contact-top h2 em {
  font-style: normal;
  color: var(--cinnabar-2);
}

.contact-top p {
  margin: 0;
  max-width: 360px;
  justify-self: end;
  font-size: 12.5px;
  line-height: 2;
  color: rgba(245, 241, 231, 0.55);
}

.contact-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-left: 1px solid rgba(245, 241, 231, 0.16);
  margin-top: 44px;
}

.contact-card {
  padding: 28px 26px;
  border-right: 1px solid rgba(245, 241, 231, 0.16);
  border-top: 1px solid rgba(245, 241, 231, 0.16);
  border-bottom: 1px solid rgba(245, 241, 231, 0.16);
  transition: background 0.4s;
}

.contact-card:hover {
  background: rgba(245, 241, 231, 0.04);
}

.contact-card .num {
  font-family: var(--num);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--cinnabar-2);
}

.contact-card h4 {
  margin: 12px 0 6px;
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 0.06em;
}

.contact-card p {
  margin: 0;
  font-size: 11.5px;
  line-height: 1.9;
  color: rgba(245, 241, 231, 0.5);
}

.contact-card .way {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--paper);
  border-bottom: 1px solid rgba(245, 241, 231, 0.3);
  padding-bottom: 3px;
  transition: color 0.25s, border-color 0.25s;
}

.contact-card .way:hover {
  color: var(--cinnabar-2);
  border-color: var(--cinnabar-2);
}

.contact-bottom {
  position: relative;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 54px;
  font-size: 10.5px;
  letter-spacing: 0.06em;
  color: rgba(245, 241, 231, 0.38);
}

.contact-bottom a {
  color: rgba(245, 241, 231, 0.62);
}

.foot {
  background: #100e0b;
  color: rgba(245, 241, 231, 0.5);
  padding: 26px 0;
  font-size: 10.5px;
  letter-spacing: 0.06em;
}

.foot .wrap {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.foot b {
  font-family: var(--serif);
  color: rgba(245, 241, 231, 0.82);
  letter-spacing: 0.16em;
  font-weight: 500;
}

/* ============================================================
   战略规划页
   ============================================================ */

.doc-cover {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 130px var(--pad) 46px;
  background: var(--ink);
  color: var(--paper);
  overflow: hidden;
}

.doc-cover::before {
  content: '';
  position: absolute;
  right: -18vw;
  top: 36vh;
  width: 44vw;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 36%, rgba(166, 59, 39, 0.92), rgba(126, 38, 24, 0.9));
  opacity: 0.88;
}

.doc-cover::after {
  content: '';
  position: absolute;
  right: -2vw;
  top: 41vh;
  width: 32vw;
  aspect-ratio: 1;
  border: 1px solid rgba(245, 241, 231, 0.14);
  border-radius: 50%;
}

.cover-top {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  font-size: 10.5px;
  letter-spacing: 0.2em;
  color: rgba(245, 241, 231, 0.7);
  z-index: 1;
}

.cover-main {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: end;
}

.cover-title .eyebrow {
  color: rgba(245, 241, 231, 0.55);
}

.cover-title .eyebrow::before {
  background: var(--cinnabar-2);
}

.cover-title h1 {
  margin: 18px 0 0;
  font-family: var(--serif);
  font-size: clamp(2.6rem, 6.4vw, 5.8rem);
  font-weight: 400;
  line-height: 1.16;
  letter-spacing: 0.04em;
}

.cover-title h1 em {
  font-style: normal;
  color: var(--cinnabar-2);
}

.cover-title p {
  margin: 22px 0 0;
  max-width: 520px;
  font-size: 13.5px;
  line-height: 2;
  color: rgba(245, 241, 231, 0.72);
}

.cover-meta {
  display: grid;
  gap: 14px;
  min-width: 180px;
  border-top: 1px solid rgba(245, 241, 231, 0.2);
  padding-top: 16px;
}

.cover-meta div {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: rgba(245, 241, 231, 0.5);
}

.cover-meta b {
  color: var(--paper);
  font-weight: 500;
}

.cover-foot {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding-top: 20px;
  border-top: 1px solid rgba(245, 241, 231, 0.16);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: rgba(245, 241, 231, 0.42);
}

.doc-body {
  background: var(--paper);
}

.doc-section {
  padding: clamp(60px, 8vw, 110px) 0;
  border-bottom: 1px solid var(--line);
}

.doc-section:nth-child(even) {
  background: linear-gradient(180deg, #f7f3e9, var(--paper));
}

.doc-wrap {
  max-width: 920px;
  margin: 0 auto;
  padding-inline: var(--pad);
}

.doc-head {
  display: flex;
  align-items: baseline;
  gap: 18px;
  margin-bottom: 26px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-strong);
}

.doc-head .n {
  font-family: var(--num);
  font-size: 13px;
  color: var(--cinnabar);
  letter-spacing: 0.12em;
}

.doc-head h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 500;
  letter-spacing: 0.05em;
}

.doc-head span {
  margin-left: auto;
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
}

.doc p {
  font-size: 14px;
  line-height: 2.1;
  color: var(--ink-2);
  margin: 0 0 16px;
}

.doc-cover .cover-title p {
  margin-top: 24px;
  color: rgba(245, 241, 231, 0.72);
}

.cover-meta span {
  color: rgba(245, 241, 231, 0.68);
}

.doc h3 {
  margin: 34px 0 10px;
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 0.05em;
}

.doc h4 {
  margin: 24px 0 8px;
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: 0.06em;
}

.doc ul,
.doc ol {
  margin: 0 0 18px;
  padding-left: 20px;
}

.doc li {
  font-size: 13.5px;
  line-height: 2;
  color: var(--ink-2);
  margin-bottom: 4px;
}

.doc li::marker {
  color: var(--cinnabar);
}

.doc strong {
  font-weight: 500;
  color: var(--ink);
  box-shadow: inset 0 -0.45em 0 rgba(174, 139, 78, 0.22);
}

.doc .lead {
  font-family: var(--serif);
  font-size: clamp(16px, 2vw, 19px);
  line-height: 2;
  color: var(--ink);
}

.callout {
  margin: 26px 0;
  padding: 22px 26px;
  border-left: 2px solid var(--cinnabar);
  background: rgba(255, 253, 247, 0.65);
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.callout b {
  display: block;
  margin-bottom: 6px;
  font-family: var(--serif);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.06em;
}

.callout p {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.95;
  color: var(--ink-2);
}

.kpi-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line-strong);
  margin: 26px 0 30px;
}

.kpi {
  padding: 18px 16px;
  border-right: 1px solid var(--line);
}

.kpi:last-child {
  border-right: 0;
}

.kpi b {
  display: block;
  font-family: var(--num);
  font-size: 28px;
  font-weight: 500;
  line-height: 1.1;
  color: var(--cinnabar);
}

.kpi span {
  display: block;
  margin-top: 4px;
  font-size: 10px;
  line-height: 1.6;
  color: var(--muted);
}

.doc table {
  width: 100%;
  border-collapse: collapse;
  margin: 22px 0 26px;
  font-size: 12px;
}

.doc th {
  text-align: left;
  padding: 10px 12px;
  background: rgba(22, 19, 15, 0.05);
  border-bottom: 1px solid var(--line-strong);
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--ink);
  white-space: nowrap;
}

.doc td {
  padding: 11px 12px;
  border-bottom: 1px solid var(--line);
  line-height: 1.75;
  color: var(--ink-2);
  vertical-align: top;
}

.doc tr:hover td {
  background: rgba(255, 253, 247, 0.5);
}

.doc .t-roadmap td:first-child {
  white-space: nowrap;
}

.doc .num {
  font-family: var(--num);
  font-size: 14px;
  color: var(--cinnabar);
  white-space: nowrap;
}

.doc .src {
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.doc .fn {
  font-size: 9px;
  vertical-align: super;
  color: var(--cinnabar);
  font-family: var(--num);
  margin-left: 1px;
}

.matrix {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 24px 0 8px;
  padding: 30px;
  background: rgba(255, 253, 247, 0.6);
  border: 1px solid var(--line-strong);
}

.matrix::before,
.matrix::after {
  content: '';
  position: absolute;
  background: var(--line-strong);
}

.matrix::before {
  left: 50%;
  top: 14px;
  bottom: 14px;
  width: 1px;
}

.matrix::after {
  top: 50%;
  left: 14px;
  right: 14px;
  height: 1px;
}

.matrix div {
  position: relative;
  z-index: 1;
  padding: 14px;
  border: 1px dashed var(--line);
  min-height: 104px;
}

.matrix b {
  display: block;
  font-family: var(--serif);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.06em;
}

.matrix span {
  font-size: 10.5px;
  color: var(--muted);
  line-height: 1.7;
}

.matrix .target {
  border: 1px solid var(--cinnabar);
  background: rgba(166, 59, 39, 0.05);
}

.matrix .target b {
  color: var(--cinnabar);
}

.matrix-axis {
  display: flex;
  justify-content: space-between;
  font-size: 9.5px;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 26px;
}

.doc-toc {
  max-width: 920px;
  margin: 0 auto;
  padding: clamp(50px, 7vw, 80px) var(--pad) 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0 50px;
}

.doc-toc a {
  display: grid;
  grid-template-columns: 32px 1fr auto;
  align-items: baseline;
  gap: 10px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
  transition: color 0.25s, padding 0.3s var(--ease);
}

.doc-toc a:hover {
  color: var(--cinnabar);
  padding-left: 6px;
}

.doc-toc b {
  font-family: var(--num);
  font-weight: 400;
  font-size: 12px;
  color: var(--cinnabar);
}

.doc-toc span {
  font-family: var(--serif);
  font-size: 15px;
  letter-spacing: 0.05em;
}

.doc-toc i {
  font-style: normal;
  font-size: 9px;
  letter-spacing: 0.14em;
  color: var(--muted);
  text-transform: uppercase;
}

.toc-title {
  max-width: 920px;
  margin: 0 auto;
  padding: clamp(50px, 7vw, 80px) var(--pad) 0;
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: 0.24em;
  color: var(--muted);
}

.risk-table td:first-child {
  font-weight: 500;
  color: var(--ink);
  white-space: nowrap;
}

.checklist {
  counter-reset: c;
  list-style: none;
  padding: 0;
  margin: 22px 0;
  border-top: 1px solid var(--line);
}

.checklist li {
  counter-increment: c;
  position: relative;
  padding: 12px 0 12px 42px;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}

.checklist li::before {
  content: counter(c, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 12px;
  font-family: var(--num);
  font-size: 13px;
  color: var(--cinnabar);
}

.doc-foot {
  padding: 50px 0 80px;
  border-top: 1px solid var(--line-strong);
  background: var(--paper-2);
}

.sources {
  columns: 2;
  column-gap: 40px;
  margin-top: 18px;
}

.sources p {
  break-inside: avoid;
  font-size: 10.5px;
  line-height: 1.8;
  color: var(--muted);
  margin-bottom: 10px;
}

.sources a {
  color: var(--ink-2);
  border-bottom: 1px solid var(--line-strong);
}

.sources a:hover {
  color: var(--cinnabar);
}

.print-btn {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 80;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--ink);
  color: var(--paper);
  font-size: 11px;
  letter-spacing: 0.1em;
  border: 1px solid var(--ink);
  transition: background 0.3s, color 0.3s;
}

.print-btn:hover {
  background: var(--cinnabar);
  border-color: var(--cinnabar);
}

/* ============================================================
   响应式
   ============================================================ */

@media (max-width: 1180px) {
  .hero {
    grid-template-columns: 1fr 0.85fr;
  }

  .hero h1 span {
    font-size: clamp(3.4rem, 8vw, 6.4rem);
  }

  .phone {
    width: 214px;
    height: 442px;
  }

  .hero-visual {
    min-height: 540px;
  }

  .nav {
    gap: 16px;
  }

  .nav a {
    font-size: 12px;
  }

  .biz-row {
    grid-template-columns: 76px minmax(0, 1fr) 240px 40px;
  }
}

@media (max-width: 980px) {
  .site-head {
    padding-block: 14px;
  }

  .nav {
    position: fixed;
    inset: 0;
    z-index: -1;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    gap: 8px;
    padding: 100px var(--pad) 40px;
    background: var(--paper);
    transform: translateY(-100%);
    transition: transform 0.55s var(--ease);
  }

  body.nav-open .nav {
    transform: none;
  }

  .nav a {
    width: 100%;
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
    font-family: var(--serif);
    font-size: 24px;
    letter-spacing: 0.08em;
  }

  .nav a sup {
    font-size: 11px;
    margin-right: 8px;
  }

  .nav a::after {
    display: none;
  }

  .head-cta {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  body.nav-open {
    overflow: hidden;
  }

  .hero {
    grid-template-columns: 1fr;
    padding-top: 120px;
    min-height: auto;
  }

  .hero-visual {
    min-height: 520px;
    margin-top: 20px;
  }

  .hero-rail {
    position: static;
    margin-top: 46px;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px 20px;
  }

  .sec-head {
    grid-template-columns: 64px 1fr;
  }

  .sec-note {
    grid-column: 2;
    text-align: left;
    max-width: none;
    margin-top: -12px;
  }

  .product-top {
    grid-template-columns: 1fr;
  }

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

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

  .strategy-head {
    grid-template-columns: 1fr;
  }

  .strategy-head p {
    justify-self: start;
  }

  .core-panel {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .core-tag {
    flex-direction: row;
    align-items: center;
    padding-left: 0;
    padding-bottom: 12px;
    border-left: 0;
    border-bottom: 1px solid rgba(245, 241, 231, 0.2);
  }

  .core-side {
    text-align: left;
    display: flex;
    align-items: baseline;
    gap: 10px;
  }

  .core-side .big {
    font-size: 40px;
  }

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

  .wing::before {
    display: none;
  }

  .road-grid {
    grid-template-columns: 1fr 1fr;
    gap: 34px 24px;
  }

  .road-grid::before {
    display: none;
  }

  .road-card {
    padding-top: 0;
  }

  .road-card::before {
    display: none;
  }

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

  .about-figure {
    max-width: 460px;
  }

  .contact-top {
    grid-template-columns: 1fr;
  }

  .contact-top p {
    justify-self: start;
  }

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

  .doc-cover {
    padding-top: 110px;
  }

  .cover-main {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .cover-meta {
    max-width: 340px;
  }

  .doc-toc {
    grid-template-columns: 1fr;
  }

  .sources {
    columns: 1;
  }

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

  .kpi:nth-child(2) {
    border-right: 0;
  }
}

@media (max-width: 700px) {
  body {
    font-size: 15px;
  }

  .doc-cover::before {
    right: -34vw;
    top: 40vh;
    width: 70vw;
  }

  .doc-cover::after {
    right: -20vw;
    top: 44vh;
    width: 46vw;
  }

  .cover-foot span:last-child {
    display: none;
  }

  .hero {
    padding-bottom: 60px;
  }

  .hero h1 span {
    font-size: clamp(2.9rem, 12vw, 4.4rem);
  }

  .hero-sub {
    font-size: 14px;
  }

  .hero-visual {
    min-height: 450px;
  }

  .phone {
    width: 190px;
    height: 392px;
  }

  .phone--b,
  .phone--c {
    display: none;
  }

  .phone--a {
    transform: translate(-50%, -50%);
  }

  .phone-stack:hover .phone--a {
    transform: translate(-50%, -52%);
  }

  .hero-sun {
    width: 240px;
    right: 4%;
    top: 8%;
  }

  .hero-ring {
    width: 270px;
    right: 1%;
    top: 3%;
  }

  .hero-rail {
    grid-template-columns: 1fr 1fr;
    bottom: auto;
  }

  .hero-rail b {
    font-size: 24px;
  }

  .hero-rail span {
    font-size: 10px;
  }

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

  .sec-index {
    flex-direction: row;
    align-items: center;
    gap: 8px;
  }

  .sec-note {
    grid-column: 1;
    margin-top: 6px;
  }

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

  .stage-inner {
    grid-template-columns: 1fr;
    padding-top: 30px;
    min-height: auto;
  }

  .stage-phone {
    display: none;
  }

  .stage-phone:nth-child(2) {
    display: block;
    transform: translateY(0);
  }

  .stage-phone:nth-child(2):hover {
    transform: translateY(0);
  }

  .stage-frame {
    min-height: 470px;
  }

  .stage-caption {
    flex-direction: column;
    gap: 4px;
    align-items: flex-start;
  }

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

  .stat {
    padding: 22px 18px;
  }

  .stat-value b {
    font-size: 2.6rem;
  }

  .biz-flow {
    flex-wrap: wrap;
  }

  .biz-flow div {
    flex: 1 0 33%;
    border-bottom: 1px solid var(--line);
  }

  .biz-flow div::after {
    display: none;
  }

  .biz-row {
    grid-template-columns: 54px 1fr 30px;
    gap: 12px;
    padding: 20px 8px;
  }

  .biz-tags {
    grid-column: 2 / 4;
  }

  .biz-arrow {
    width: 30px;
    height: 30px;
    grid-row: 1;
    grid-column: 3;
  }

  .biz-main h3 small {
    display: block;
    margin-left: 0;
    margin-top: 4px;
  }

  .biz-visual {
    grid-template-columns: 1fr;
  }

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

  .road-card {
    padding-bottom: 10px;
  }

  .model-side {
    grid-template-columns: 1fr;
  }

  .model-side div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .model-side div:last-child {
    border-bottom: 0;
  }

  .brand-values {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    border-left: 0;
  }

  .contact-card {
    border-left: 1px solid rgba(245, 241, 231, 0.16);
  }

  .cover-title h1 {
    font-size: clamp(2.2rem, 10vw, 3.4rem);
  }

  .doc-head {
    flex-wrap: wrap;
    gap: 8px 14px;
  }

  .doc-head span {
    margin-left: 0;
    width: 100%;
  }

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

  .kpi {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

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

  .doc table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }

  .doc th,
  .doc td {
    padding-inline: 8px;
  }

  .doc td {
    white-space: normal;
    min-width: 120px;
  }

  .matrix {
    grid-template-columns: 1fr;
    padding: 20px;
  }

  .matrix::before {
    display: none;
  }

  .matrix::after {
    left: 14px;
    right: 14px;
  }

  .print-btn {
    right: 14px;
    bottom: 14px;
  }
}

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

  .reveal {
    opacity: 1;
    transform: none;
  }
}

@media print {
  .site-head,
  .progress,
  .grain,
  .print-btn,
  .foot,
  .contact,
  .marquee {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
    font-size: 11pt;
  }

  .doc-cover {
    min-height: auto;
    background: #fff;
    color: #000;
    padding: 30mm 0 12mm;
    page-break-after: always;
  }

  .doc-cover::before,
  .doc-cover::after {
    display: none;
  }

  .cover-title h1,
  .cover-title p,
  .cover-top,
  .cover-meta b,
  .cover-meta div,
  .cover-foot {
    color: #000 !important;
  }

  .cover-title h1 em {
    color: #a63b27 !important;
  }

  .doc-section {
    padding: 8mm 0;
    break-inside: avoid;
    border-bottom: 1px solid #ddd;
  }

  .doc-section:nth-child(even) {
    background: #fff;
  }

  .doc-head h2 {
    font-size: 15pt;
  }

  .doc p,
  .doc li,
  .doc td {
    font-size: 10pt;
    line-height: 1.7;
  }

  .callout,
  .matrix,
  .kpi-row,
  table {
    break-inside: avoid;
  }

  a {
    text-decoration: none;
    color: #000;
  }
}