/* =========================================================
   飞鱼记账 PC 官网 - 主样式
   设计原则:贴近 App 内容 / 工具感 / 扁平克制 / 截图主导
   ========================================================= */

/* ---------- 设计令牌 (Design Tokens) ---------- */
:root {
  /* 主色 - 紫色降为点睛色,只用于按钮/链接/标签 */
  --color-primary: #6B4EFF;
  --color-primary-hover: #5B3FE6;
  --color-primary-soft: #F3F0FF;
  --color-primary-line: #E5DEFF;

  /* 功能色 */
  --color-success: #10B981;
  --color-danger: #EF4444;
  --color-warning: #F59E0B;
  --color-info: #3B82F6;

  /* 中性色 - 整体白底+浅灰,接近 App 界面 */
  --color-bg: #FAFAFA;
  --color-bg-soft: #F4F4F5;
  --color-card: #FFFFFF;
  --color-border: #ECECEE;
  --color-border-strong: #D4D4D8;
  --color-text-1: #18181B;
  --color-text-2: #52525B;
  --color-text-3: #A1A1AA;
  --color-text-on-dark: #FFFFFF;

  /* 字号 - 更接近 App UI 节奏 */
  --fs-h1: clamp(36px, 4.4vw, 56px);
  --fs-h2: clamp(28px, 3.2vw, 40px);
  --fs-h3: clamp(18px, 1.6vw, 22px);
  --fs-body: 15px;
  --fs-sm: 13px;
  --fs-xs: 12px;

  /* 字重 */
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;

  /* 行高 */
  --lh-tight: 1.2;
  --lh-snug: 1.4;
  --lh-normal: 1.65;
  --lh-loose: 1.8;

  /* 间距 (8px 基础单位) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;
  --space-16: 64px;
  --space-24: 96px;
  --space-32: 128px;

  /* 圆角 - App 风格,统一且更克制 */
  --radius-btn: 8px;
  --radius-card: 10px;
  --radius-modal: 14px;
  --radius-badge: 6px;

  /* 容器 */
  --container-max: 1160px;
  --container-padding: 24px;

  /* 阴影 - 极轻,接近 App 卡片 */
  --shadow-sm: 0 1px 0 rgba(24, 24, 27, 0.04);
  --shadow-md: 0 1px 2px rgba(24, 24, 27, 0.04), 0 2px 6px rgba(24, 24, 27, 0.04);
  --shadow-lg: 0 2px 8px rgba(24, 24, 27, 0.06), 0 8px 24px rgba(24, 24, 27, 0.06);
  --shadow-glow: 0 4px 16px rgba(107, 78, 255, 0.18);

  /* 动效 */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --duration-fast: 0.2s;
  --duration-base: 0.3s;
  --duration-slow: 0.6s;

  /* 布局 */
  --nav-height: 64px;
}

/* ---------- 字体 ---------- */
:root {
  --font-cn: -apple-system, BlinkMacSystemFont, "PingFang SC",
             "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
  --font-en: "SF Pro Display", "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "SF Mono", "Monaco", "Cascadia Code", "Roboto Mono", monospace;
}

html {
  font-family: var(--font-cn);
  font-size: var(--fs-body);
  color: var(--color-text-1);
  background: var(--color-bg);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  line-height: var(--lh-normal);
  font-feature-settings: "tnum" 1;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: var(--fw-bold);
  line-height: var(--lh-tight);
  color: var(--color-text-1);
  letter-spacing: -0.02em;
}

p { margin: 0; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; }

/* ---------- 通用容器 ---------- */
.fy-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.fy-section {
  padding: var(--space-24) 0;
}

.fy-section--tight { padding: var(--space-16) 0; }

.fy-eyebrow {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(107, 78, 255, 0.08);
  color: var(--color-primary);
  border-radius: 999px;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.02em;
}

.fy-section__title {
  font-size: var(--fs-h2);
  margin-top: var(--space-4);
  margin-bottom: var(--space-4);
}

.fy-section__sub {
  font-size: 18px;
  color: var(--color-text-2);
  max-width: 640px;
}

/* ---------- 顶部导航 ---------- */
.fy-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration-base) var(--ease-out);
}

.fy-nav.is-scrolled {
  border-bottom-color: var(--color-border);
}

.fy-nav__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

.fy-logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 17px;
  font-weight: var(--fw-bold);
  color: var(--color-text-1);
  letter-spacing: -0.01em;
}

.fy-logo__mark {
  width: 26px;
  height: 26px;
  flex: 0 0 26px;
}

.fy-nav__menu {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.fy-nav__item {
  position: relative;
  font-size: 14px;
  color: var(--color-text-2);
  font-weight: var(--fw-medium);
  padding: 6px 0;
  transition: color var(--duration-fast) var(--ease-out);
}

.fy-nav__item:hover,
.fy-nav__item.is-active {
  color: var(--color-text-1);
}

.fy-nav__item.is-active {
  color: var(--color-primary);
}

.fy-nav__cta {
  flex: 0 0 auto;
}

/* 下拉 */
.fy-nav__item--has-children {
  position: relative;
}

.fy-nav__submenu {
  position: absolute;
  top: calc(100% + 8px);
  left: -8px;
  min-width: 180px;
  padding: var(--space-2);
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity var(--duration-fast) var(--ease-out),
              transform var(--duration-fast) var(--ease-out),
              visibility var(--duration-fast) var(--ease-out);
}

.fy-nav__item--has-children:hover .fy-nav__submenu,
.fy-nav__item--has-children:focus-within .fy-nav__submenu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.fy-nav__submenu a {
  display: block;
  padding: 8px 12px;
  font-size: var(--fs-sm);
  color: var(--color-text-1);
  border-radius: 6px;
  transition: background var(--duration-fast) var(--ease-out);
}

.fy-nav__submenu a:hover {
  background: rgba(107, 78, 255, 0.08);
  color: var(--color-primary);
}

/* ---------- 按钮 ---------- */
.fy-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 10px 20px;
  font-size: 14px;
  font-weight: var(--fw-semibold);
  border-radius: var(--radius-btn);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-out),
              background var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}

.fy-btn--primary {
  background: var(--color-primary);
  color: #fff;
}

.fy-btn--primary:hover {
  background: var(--color-primary-hover);
}

.fy-btn--outline {
  background: transparent;
  color: var(--color-text-1);
  border-color: var(--color-border-strong);
}

.fy-btn--outline:hover {
  background: var(--color-bg-soft);
  border-color: var(--color-text-2);
}

.fy-btn--ghost {
  background: transparent;
  color: var(--color-primary);
  padding: 8px 12px;
  font-weight: var(--fw-medium);
}

.fy-btn--ghost:hover {
  background: var(--color-primary-soft);
}

.fy-btn--lg {
  padding: 14px 28px;
  font-size: 15px;
}

.fy-btn--sm {
  padding: 7px 14px;
  font-size: var(--fs-sm);
}

/* ---------- Hero ---------- */
.fy-hero {
  position: relative;
  width: 100%;
  min-height: calc(100svh - var(--nav-height));
  padding: var(--space-24) 0;
  background: var(--color-bg);
  color: var(--color-text-1);
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

.fy-hero::before {
  /* 顶部偏右的浅紫光晕,仅作为微妙环境光,不喧宾夺主 */
  content: "";
  position: absolute;
  top: -160px;
  right: -120px;
  width: 560px;
  height: 560px;
  background: radial-gradient(circle, rgba(167, 139, 250, 0.16) 0%, transparent 60%);
  pointer-events: none;
}

.fy-hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  align-items: center;
  gap: var(--space-16);
  z-index: 1;
}

.fy-hero__copy {
  max-width: 540px;
}

.fy-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  border-radius: 999px;
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  letter-spacing: 0.01em;
}

.fy-hero__title {
  font-size: var(--fs-h1);
  line-height: 1.15;
  color: var(--color-text-1);
  margin: var(--space-6) 0 var(--space-4);
  letter-spacing: -0.025em;
  font-weight: var(--fw-bold);
}

.fy-hero__title em {
  font-style: normal;
  color: var(--color-primary);
}

.fy-hero__sub {
  font-size: 17px;
  line-height: 1.7;
  color: var(--color-text-2);
  margin-bottom: var(--space-8);
  max-width: 520px;
}

.fy-hero__sub strong {
  color: var(--color-text-1);
  font-weight: var(--fw-semibold);
}

.fy-hero__actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.fy-hero__platforms {
  margin-top: var(--space-12);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text-3);
  font-size: var(--fs-sm);
}

.fy-hero__platforms span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* Hero 视觉:飞鱼 + 三手机 - 整体降为装饰性,内容主导 */
.fy-hero__visual {
  position: relative;
  height: 560px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.fy-hero__fish {
  position: absolute;
  width: 220px;
  height: 220px;
  top: -8px;
  left: -32px;
  z-index: 0;
  opacity: 0.85;
  animation: fy-fish-float 6s ease-in-out infinite;
}

.fy-hero__phones {
  position: relative;
  z-index: 1;
  display: flex;
  gap: var(--space-3);
  align-items: flex-end;
  margin-top: 24px;
}

.fy-phone {
  width: 196px;
  height: 392px;
  background: #18181B;
  border-radius: 26px;
  padding: 6px;
  box-shadow: 0 8px 24px rgba(24, 24, 27, 0.12), 0 2px 6px rgba(24, 24, 27, 0.06);
  position: relative;
  animation: fy-phone-rise 0.9s var(--ease-out) both;
}

.fy-phone:nth-child(2) { transform: translateY(-24px); animation-delay: 0.1s; }
.fy-phone:nth-child(3) { transform: translateY(12px); animation-delay: 0.2s; }

.fy-phone__screen {
  width: 100%;
  height: 100%;
  background: #FAFAFA;
  border-radius: 22px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  position: relative;
}

.fy-phone__shot {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
  border-radius: 22px;
}

.fy-phone__notch {
  width: 60px;
  height: 16px;
  background: #18181B;
  margin: 6px auto 0;
  border-radius: 999px;
}

/* Hero 关键动画 - 飞鱼漂浮 */
@keyframes fy-fish-float {
  0%, 100% { transform: translate(0, 0) rotate(-2deg); }
  50%      { transform: translate(6px, -8px) rotate(2deg); }
}

@keyframes fy-fish-leap {
  0%   { opacity: 0; transform: translate(40px, 80px) rotate(-10deg); }
  60%  { opacity: 1; transform: translate(0, -12px) rotate(2deg); }
  100% { opacity: 1; transform: translate(0, 0) rotate(0); }
}

@keyframes fy-phone-rise {
  0%   { opacity: 0; transform: translateY(40px) scale(0.96); }
  100% { opacity: 1; transform: translateY(var(--fy-phone-offset, 0)) scale(1); }
}

/* 滚动指示器 */
.fy-hero__scroll {
  position: absolute;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  color: var(--color-text-3);
  font-size: var(--fs-xs);
  letter-spacing: 0.1em;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  z-index: 1;
}

.fy-hero__scroll::after {
  content: "";
  width: 1px;
  height: 24px;
  background: var(--color-border-strong);
  animation: fy-scroll-line 1.6s ease-in-out infinite;
}

@keyframes fy-scroll-line {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---------- 痛点共鸣 - 改为人群 × 问题 ---------- */
.fy-pain {
  background: var(--color-bg);
}

.fy-pain__head {
  text-align: center;
  margin-bottom: var(--space-12);
}

.fy-pain__head .fy-section__sub {
  margin: var(--space-3) auto 0;
}

.fy-pain__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: #fff;
  overflow: hidden;
}

.fy-pain__col {
  padding: var(--space-8) var(--space-6);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
}

.fy-pain__col:last-child { border-right: none; }

.fy-pain__persona {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  background: var(--color-bg-soft);
  color: var(--color-text-2);
  border-radius: 999px;
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  margin-bottom: var(--space-4);
  width: max-content;
}

.fy-pain__question {
  font-size: 19px;
  font-weight: var(--fw-semibold);
  line-height: 1.45;
  color: var(--color-text-1);
  margin-bottom: var(--space-3);
  letter-spacing: -0.01em;
}



/* ---------- 用户场景 ---------- */
.fy-stories {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

.fy-stories__head {
  text-align: center;
  margin-bottom: var(--space-12);
}

.fy-story {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  padding: var(--space-12) 0;
  border-top: 1px solid var(--color-border);
  align-items: center;
}

.fy-story:first-of-type { border-top: none; }

.fy-story__persona {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  border-radius: 999px;
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  margin-bottom: var(--space-4);
}

.fy-story__quote {
  font-size: 24px;
  font-weight: var(--fw-bold);
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--color-text-1);
  margin-bottom: var(--space-6);
}

.fy-story__steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.fy-story__step {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: var(--space-3);
  font-size: 14px;
  color: var(--color-text-2);
  line-height: 1.65;
}

.fy-story__step span:first-child {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-text-1);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  font-family: var(--font-en);
  margin-top: 2px;
}

/* ---------- 五大支柱 - 改为能力卡片 + 截图 ---------- */
.fy-pillars {
  background: #fff;
  border-top: 1px solid var(--color-border);
}

.fy-pillars__head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-12);
}

.fy-pillars__head .fy-section__sub {
  margin: var(--space-3) auto 0;
}

.fy-pillar {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  align-items: center;
  gap: var(--space-16);
  padding: var(--space-12) 0;
  border-top: 1px solid var(--color-border);
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.fy-pillar:nth-child(even) {
  grid-template-columns: 1.1fr 1fr;
}

.fy-pillar:nth-child(even) .fy-pillar__media { order: -1; }

.fy-pillar__index {
  font-size: 13px;
  font-weight: var(--fw-semibold);
  color: var(--color-primary);
  letter-spacing: 0.04em;
  margin-bottom: var(--space-3);
  font-family: var(--font-en);
}

.fy-pillar__audience {
  font-size: 13px;
  color: var(--color-text-3);
  font-weight: var(--fw-medium);
  margin-bottom: var(--space-4);
}

.fy-pillar__title {
  font-size: 24px;
  font-weight: var(--fw-bold);
  margin-bottom: var(--space-3);
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.fy-pillar__oneline {
  font-size: 15px;
  color: var(--color-primary);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--space-3);
}

.fy-pillar__desc {
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-text-2);
  max-width: 520px;
}

.fy-pillar__media {
  aspect-ratio: 4 / 3;
  background: var(--color-bg);
  border-radius: var(--radius-card);
  overflow: hidden;
  position: relative;
  border: 1px solid var(--color-border);
}

.fy-pillar__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}

/* ---------- 信任背书 ---------- */
.fy-trust {
  background: #fff;
  border-top: 1px solid var(--color-border);
}

.fy-trust__head {
  text-align: center;
  margin-bottom: var(--space-12);
}

.fy-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: #fff;
  margin-bottom: var(--space-12);
  overflow: hidden;
}

.fy-stat {
  text-align: center;
  border-right: 1px solid var(--color-border);
  padding: var(--space-8) var(--space-4);
}

.fy-stat:last-child { border-right: none; }

.fy-stat__num {
  font-size: 32px;
  font-weight: var(--fw-bold);
  font-family: var(--font-en);
  color: var(--color-text-1);
  line-height: 1;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.fy-stat__label {
  margin-top: var(--space-2);
  font-size: 13px;
  color: var(--color-text-2);
}

.fy-quotes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: #fff;
  overflow: hidden;
}

.fy-quote {
  padding: var(--space-6);
  border-right: 1px solid var(--color-border);
}

.fy-quote:last-child { border-right: none; }

.fy-quote__text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-1);
  margin-bottom: var(--space-4);
}

.fy-quote__author {
  font-size: 12px;
  color: var(--color-text-3);
}

/* ---------- 数据安全 - 全链路 + 用户问题 ---------- */
.fy-security {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

.fy-security__intro {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-12);
}

.fy-security__title {
  font-size: var(--fs-h2);
  margin-bottom: var(--space-3);
  letter-spacing: -0.02em;
}

.fy-security__lead {
  font-size: 16px;
  color: var(--color-text-2);
  line-height: 1.7;
}

/* 全链路三层卡片 */
.fy-chain {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  margin-bottom: var(--space-12);
}

.fy-chain__layer {
  padding: var(--space-8);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
}

.fy-chain__layer:last-child { border-right: none; }

.fy-chain__tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: var(--color-primary);
  letter-spacing: 0.04em;
  margin-bottom: var(--space-4);
  font-family: var(--font-en);
}

.fy-chain__tag::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
}

.fy-chain__q {
  font-size: 17px;
  font-weight: var(--fw-semibold);
  color: var(--color-text-1);
  line-height: 1.5;
  margin-bottom: var(--space-3);
  letter-spacing: -0.01em;
}

.fy-chain__a {
  font-size: 14px;
  color: var(--color-text-2);
  line-height: 1.7;
  flex: 1;
}

.fy-chain__a strong {
  color: var(--color-text-1);
  font-weight: var(--fw-semibold);
}

/* 用户关心的 4 个问题 */
.fy-concerns {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.fy-concern {
  padding: var(--space-6) var(--space-6);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: var(--space-3);
}

.fy-concern:nth-child(2n) { border-right: none; }
.fy-concern:nth-last-child(-n+2) { border-bottom: none; }

.fy-concern__icon {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

.fy-concern__q {
  font-size: 14px;
  font-weight: var(--fw-semibold);
  color: var(--color-text-1);
  margin-bottom: 4px;
}

.fy-concern__a {
  font-size: 13px;
  color: var(--color-text-2);
  line-height: 1.65;
}

/* ---------- CTA 转化区 ---------- */
.fy-cta {
  position: relative;
  background: #fff;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-1);
  padding: var(--space-16) 0;
  text-align: center;
}

.fy-cta__title {
  font-size: clamp(28px, 3vw, 36px);
  color: var(--color-text-1);
  margin-bottom: var(--space-3);
  letter-spacing: -0.02em;
}

.fy-cta__sub {
  font-size: 15px;
  color: var(--color-text-2);
  margin-bottom: var(--space-6);
}

.fy-cta__actions {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: var(--space-4);
}

.fy-cta__meta {
  font-size: var(--fs-sm);
  color: var(--color-text-3);
}

/* ---------- 页脚 ---------- */
.fy-footer {
  background: #fff;
  color: var(--color-text-2);
  border-top: 1px solid var(--color-border);
  padding: var(--space-12) 0 var(--space-8);
}

.fy-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: var(--space-8);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-border);
}

.fy-footer__brand .fy-logo { color: var(--color-text-1); }

.fy-footer__tag {
  margin-top: var(--space-3);
  font-size: var(--fs-sm);
  color: var(--color-text-2);
  line-height: 1.7;
  max-width: 280px;
}

.fy-footer__col h4 {
  color: var(--color-text-1);
  font-size: 13px;
  font-weight: var(--fw-semibold);
  margin-bottom: var(--space-3);
}

.fy-footer__col a {
  display: block;
  padding: 4px 0;
  font-size: 13px;
  color: var(--color-text-2);
  transition: color var(--duration-fast) var(--ease-out);
}

.fy-footer__col a:hover { color: var(--color-primary); }

.fy-footer__bottom {
  margin-top: var(--space-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-size: var(--fs-xs);
  color: var(--color-text-3);
}

.fy-footer__socials {
  display: flex;
  gap: var(--space-2);
}

.fy-footer__socials a {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: var(--color-bg-soft);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-2);
  font-size: 12px;
  font-weight: var(--fw-medium);
  transition: background var(--duration-fast) var(--ease-out);
}

.fy-footer__socials a:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

/* ---------- 功能页 / 价格页 / 帮助页等内页布局 ---------- */
.fy-page-hero {
  padding: var(--space-16) 0 var(--space-12);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.fy-page-hero__inner {
  max-width: 760px;
}

.fy-page-hero h1 {
  font-size: var(--fs-h1);
  margin-bottom: var(--space-3);
  letter-spacing: -0.02em;
}

.fy-page-hero p {
  font-size: 16px;
  color: var(--color-text-2);
  line-height: 1.7;
}

/* 功能页 - 左固定导航 + 右内容 */
.fy-features-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-12);
  padding: var(--space-12) 0;
}

.fy-features-toc {
  position: sticky;
  top: calc(var(--nav-height) + var(--space-6));
  height: max-content;
  font-size: 14px;
}

.fy-features-toc h4 {
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-3);
  margin-bottom: var(--space-3);
  font-weight: var(--fw-semibold);
}

.fy-features-toc a {
  display: block;
  padding: 6px 10px;
  margin-left: -10px;
  color: var(--color-text-2);
  border-left: 2px solid transparent;
  transition: color var(--duration-fast), border-color var(--duration-fast);
  border-radius: 0;
}

.fy-features-toc a.is-active {
  color: var(--color-primary);
  border-left-color: var(--color-primary);
  font-weight: var(--fw-semibold);
}

.fy-feature-section {
  padding: var(--space-12) 0;
  border-bottom: 1px solid var(--color-border);
  scroll-margin-top: calc(var(--nav-height) + 24px);
}

.fy-feature-section:last-child { border-bottom: none; }

.fy-feature-section__eyebrow {
  display: inline-block;
  padding: 3px 10px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  border-radius: 999px;
  letter-spacing: 0.02em;
  margin-bottom: var(--space-3);
}

.fy-feature-section h2 {
  font-size: 28px;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-3);
}

.fy-feature-section__lead {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text-2);
  margin-bottom: var(--space-8);
  max-width: 640px;
}

.fy-feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
  padding: var(--space-6) 0;
  border-top: 1px dashed var(--color-border);
}

.fy-feature-block:first-of-type { border-top: none; }

.fy-feature-block h3 {
  font-size: 18px;
  margin-bottom: var(--space-2);
  font-weight: var(--fw-semibold);
}

.fy-feature-block p {
  font-size: 14px;
  color: var(--color-text-2);
  line-height: 1.75;
}

.fy-feature-block__media {
  aspect-ratio: 4 / 3;
  background: var(--color-bg);
  border-radius: var(--radius-card);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-3);
  font-size: var(--fs-sm);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.fy-feature-block__shot img,
.fy-feature-block__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}

/* 用户场景图（竖屏 414×896 截图） */
.fy-story__media--shot {
  aspect-ratio: 414 / 896;
  background: var(--color-bg);
  border-radius: 18px;
  overflow: hidden;
  max-width: 260px;
  margin: 0 auto;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}

.fy-story__media--shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* 价格表 */
.fy-price-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  background: #fff;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.fy-price-table th,
.fy-price-table td {
  padding: var(--space-3) var(--space-6);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.fy-price-table th {
  background: var(--color-bg);
  font-weight: var(--fw-semibold);
  color: var(--color-text-1);
  font-size: 13px;
}

.fy-price-table th:not(:first-child),
.fy-price-table td:not(:first-child) {
  text-align: center;
  width: 22%;
}

.fy-price-table td.fy-price-table__feat {
  font-weight: var(--fw-medium);
  background: var(--color-bg);
  color: var(--color-text-1);
  font-size: 13px;
}

.fy-price-table tr:last-child td { border-bottom: none; }

.fy-tick {
  color: var(--color-primary);
  font-weight: 700;
}

.fy-cross {
  color: var(--color-text-3);
}

.fy-plan-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: var(--space-12);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: #fff;
}

.fy-plan {
  padding: var(--space-8) var(--space-6);
  background: #fff;
  position: relative;
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
}

.fy-plan:last-child { border-right: none; }

.fy-plan--featured {
  background: var(--color-primary-soft);
}

.fy-plan__badge {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: var(--space-4);
  width: max-content;
}

.fy-plan__name {
  font-size: 18px;
  font-weight: var(--fw-semibold);
  margin-bottom: var(--space-3);
  color: var(--color-text-1);
}

.fy-plan__price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: var(--space-2);
}

.fy-plan__price strong {
  font-size: 32px;
  font-weight: var(--fw-bold);
  color: var(--color-text-1);
  font-family: var(--font-en);
  letter-spacing: -0.02em;
  line-height: 1;
}

.fy-plan__price span {
  font-size: var(--fs-sm);
  color: var(--color-text-2);
}

.fy-plan__meta {
  font-size: 13px;
  color: var(--color-text-2);
  margin-bottom: var(--space-6);
  line-height: 1.6;
  flex: 1;
}

.fy-plan__list {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-6);
}

.fy-plan__list li {
  font-size: 13px;
  padding: 4px 0;
  color: var(--color-text-2);
  display: flex;
  align-items: center;
  gap: 6px;
}

.fy-plan__list li::before {
  content: "✓";
  color: var(--color-primary);
  font-weight: 700;
}

.fy-plan__cta {
  display: block;
  text-align: center;
  width: 100%;
}

/* FAQ */
.fy-faq {
  margin-top: var(--space-8);
  border-top: 1px solid var(--color-border);
}

.fy-faq__item {
  border-bottom: 1px solid var(--color-border);
}

.fy-faq__q {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: var(--space-4) 0;
  font-size: 15px;
  font-weight: var(--fw-semibold);
  color: var(--color-text-1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.fy-faq__q::after {
  content: "+";
  font-size: 20px;
  font-weight: 300;
  color: var(--color-text-3);
  transition: transform var(--duration-base) var(--ease-out);
}

.fy-faq__item.is-open .fy-faq__q::after {
  transform: rotate(45deg);
}

.fy-faq__a {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-base) var(--ease-out);
}

.fy-faq__a-inner {
  padding: 0 0 var(--space-4);
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-text-2);
}

.fy-faq__item.is-open .fy-faq__a {
  max-height: 320px;
}

/* 帮助中心 Tabs */
.fy-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-8);
}

.fy-tab {
  padding: var(--space-3) var(--space-4);
  font-size: 14px;
  font-weight: var(--fw-medium);
  color: var(--color-text-2);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  margin-bottom: -1px;
  transition: color var(--duration-fast), border-color var(--duration-fast);
}

.fy-tab.is-active {
  color: var(--color-text-1);
  border-bottom-color: var(--color-primary);
}

.fy-tab-panel { display: none; }
.fy-tab-panel.is-active { display: block; }

/* 文章列表 */
.fy-article-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: #fff;
  overflow: hidden;
}

.fy-article {
  padding: var(--space-6);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.fy-article:nth-child(2n) { border-right: none; }
.fy-article:nth-last-child(-n+2) { border-bottom: none; }

.fy-article h3 {
  font-size: 16px;
  font-weight: var(--fw-semibold);
  margin-bottom: 0;
  color: var(--color-text-1);
}

.fy-article p {
  font-size: 13px;
  color: var(--color-text-2);
  line-height: 1.65;
  margin-bottom: 0;
}

.fy-article__more {
  font-size: 13px;
  color: var(--color-primary);
  font-weight: var(--fw-semibold);
  margin-top: auto;
}

/* 下载页 */
.fy-download-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: var(--space-12);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: #fff;
}

.fy-download-card {
  padding: var(--space-6);
  background: #fff;
  text-align: center;
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
}

.fy-download-card:last-child { border-right: none; }

.fy-download-card__icon {
  width: 44px;
  height: 44px;
  margin: 0 auto var(--space-3);
  background: var(--color-primary-soft);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.fy-download-card h3 {
  font-size: 16px;
  font-weight: var(--fw-semibold);
  margin-bottom: var(--space-2);
}

.fy-download-card p {
  font-size: 13px;
  color: var(--color-text-2);
  line-height: 1.6;
  margin-bottom: var(--space-4);
  flex: 1;
}

/* 安全页 */
.fy-rights-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  margin-top: var(--space-8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: #fff;
}

.fy-right {
  padding: var(--space-6);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.fy-right:nth-child(2n) { border-right: none; }
.fy-right:nth-last-child(-n+2) { border-bottom: none; }

.fy-right h3 {
  font-size: 15px;
  font-weight: var(--fw-semibold);
  margin-bottom: 0;
  color: var(--color-text-1);
}

.fy-right p {
  font-size: 13px;
  color: var(--color-text-2);
  line-height: 1.65;
}

/* 法律页 */
.fy-legal {
  max-width: 820px;
  margin: 0 auto;
  padding: var(--space-12) var(--space-6);
}

.fy-legal h1 {
  font-size: 32px;
  margin-bottom: var(--space-3);
}

.fy-legal__updated {
  color: var(--color-text-2);
  font-size: 13px;
  margin-bottom: var(--space-8);
}

.fy-legal h2 {
  font-size: 20px;
  margin: var(--space-8) 0 var(--space-3);
  font-weight: var(--fw-semibold);
}

.fy-legal h3 {
  font-size: 16px;
  margin: var(--space-6) 0 var(--space-2);
  font-weight: var(--fw-semibold);
}

.fy-legal p {
  font-size: 14px;
  color: var(--color-text-2);
  line-height: 1.85;
  margin-bottom: var(--space-3);
}

.fy-legal ul {
  list-style: disc;
  padding-left: 20px;
  margin-bottom: var(--space-3);
}

.fy-legal ul li {
  font-size: 14px;
  color: var(--color-text-2);
  line-height: 1.85;
}

/* 关于页 */
.fy-about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-12);
  padding: var(--space-12) 0;
  align-items: center;
}

.fy-about-grid--reverse {
  grid-template-columns: 1fr 1.2fr;
}

.fy-about-grid--reverse .fy-about-grid__media { order: -1; }

.fy-about-grid h2 {
  font-size: 28px;
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}

.fy-about-grid p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--color-text-2);
  margin-bottom: var(--space-3);
}

.fy-about-grid__media {
  aspect-ratio: 1 / 1;
  background: var(--color-bg);
  border-radius: var(--radius-card);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.fy-about-grid__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.fy-principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: var(--space-8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: #fff;
}

.fy-principle {
  padding: var(--space-6);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.fy-principle:last-child { border-right: none; }

.fy-principle h3 {
  font-size: 16px;
  font-weight: var(--fw-semibold);
  margin-bottom: 0;
}

.fy-principle p {
  font-size: 13px;
  color: var(--color-text-2);
  line-height: 1.7;
}

.fy-contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  margin-top: var(--space-8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: #fff;
}

.fy-contact-item {
  padding: var(--space-6);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.fy-contact-item:nth-child(2n) { border-right: none; }
.fy-contact-item:nth-last-child(-n+2) { border-bottom: none; }

.fy-contact-item h4 {
  font-size: 13px;
  color: var(--color-text-2);
  margin-bottom: var(--space-2);
  font-weight: var(--fw-medium);
}

.fy-contact-item p {
  font-size: 16px;
  color: var(--color-text-1);
  font-weight: var(--fw-semibold);
}

/* 用户故事 */
.fy-user-story {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  padding: var(--space-8) 0;
  border-top: 1px solid var(--color-border);
  align-items: center;
}

.fy-user-story:first-of-type { border-top: none; }

.fy-user-story__quote {
  font-size: 20px;
  line-height: 1.5;
  font-weight: var(--fw-semibold);
  letter-spacing: -0.01em;
  color: var(--color-text-1);
  margin-bottom: var(--space-3);
}

.fy-user-story__persona {
  font-size: 13px;
  color: var(--color-text-2);
  margin-bottom: 0;
  line-height: 1.7;
}

.fy-user-story__media {
  aspect-ratio: 4 / 3;
  background: var(--color-bg);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.fy-user-story__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 通用入场动画 - 默认完全可见,不影响阅读和爬虫抓取 */
.fy-reveal {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

/* 移动端菜单 */
.fy-nav__burger {
  display: none;
  background: none;
  border: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  color: var(--color-text-1);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .fy-hero__inner { grid-template-columns: 1fr; gap: var(--space-12); }
  .fy-hero__visual { height: auto; }
  .fy-hero__fish { position: relative; width: 320px; height: 320px; top: 0; right: 0; margin: 0 auto; }
  .fy-hero__phones { margin-top: 0; justify-content: center; flex-wrap: wrap; }

  .fy-pain__grid { grid-template-columns: 1fr; }
  .fy-pain__col { border-right: none; border-bottom: 1px solid var(--color-border); }
  .fy-pain__col:last-child { border-bottom: none; }

  .fy-pillar,
  .fy-pillar:nth-child(even) {
    grid-template-columns: 1fr;
  }
  .fy-pillar:nth-child(even) .fy-pillar__media { order: 0; }

  .fy-stats { grid-template-columns: repeat(2, 1fr); gap: var(--space-8); }
  .fy-stat { border-right: none; }
  .fy-stat:nth-child(odd) { border-right: 1px solid var(--color-border); }

  .fy-quotes { grid-template-columns: 1fr; }
  .fy-security__grid,
  .fy-story,
  .fy-about-grid,
  .fy-about-grid--reverse,
  .fy-user-story,
  .fy-feature-block { grid-template-columns: 1fr; }
  .fy-about-grid--reverse .fy-about-grid__media,
  .fy-story .fy-story__media { order: 0; }

  .fy-plan-cards { grid-template-columns: 1fr; }
  .fy-download-grid { grid-template-columns: repeat(2, 1fr); }

  .fy-features-layout { grid-template-columns: 1fr; }
  .fy-features-toc { position: static; }

  .fy-footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root { --space-24: 64px; --space-16: 48px; }
  .fy-section { padding: var(--space-16) 0; }

  .fy-nav__menu { display: none; }
  .fy-nav__burger { display: inline-flex; }
  .fy-nav.is-open .fy-nav__menu {
    display: flex;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: #fff;
    padding: var(--space-4);
    box-shadow: var(--shadow-md);
  }

  .fy-pillars__head .fy-section__sub { padding: 0 var(--space-4); }

  .fy-stats { grid-template-columns: 1fr; }
  .fy-stat { border-right: none; border-bottom: 1px solid var(--color-border); padding: var(--space-4) 0; }
  .fy-stat:last-child { border-bottom: none; }

  .fy-principles,
  .fy-rights-grid,
  .fy-security__list,
  .fy-contact-grid { grid-template-columns: 1fr; }

  .fy-download-grid { grid-template-columns: 1fr; }

  .fy-article-list { grid-template-columns: 1fr; }

  .fy-footer__grid { grid-template-columns: 1fr; }
}

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}