/* ============================================================
   FY 的个人网站 · 样式
   设计基调：暖白纸感 + 墨色 + 赭石橘点缀，大字、留白、少即是多
   ============================================================ */

:root {
  /* 颜色 */
  --paper: #FAF6EF;        /* 暖白纸底 */
  --paper-deep: #F2EAE0;   /* 稍深的纸色，用于卡片/色块 */
  --ink: #2A2521;          /* 墨色 */
  --ink-soft: #7A6F63;     /* 柔和的灰褐，用于次要文字 */
  --line: #E4D9C9;         /* 细线、描边 */
  --accent: #C2603F;       /* 赭石橘，唯一强调色 */
  --accent-deep: #A64E31;
  --accent-soft: #F0D9CC;

  /* 字体 */
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  --font-serif: Georgia, "Times New Roman", "Songti SC", "Noto Serif SC", serif;
  --font-hand: "KaiTi", "STKaiti", "Kaiti SC", "楷体", var(--font-serif);

  /* 尺寸 */
  --container: 1080px;
  --radius: 14px;
  --shadow: 0 18px 40px -24px rgba(80, 60, 40, .35);
}

/* ---------- 基础 ---------- */
* { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 纸纹质感（极淡的噪点，铺满整页） */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 999;
  pointer-events: none;
  opacity: .5;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='.16'/%3E%3C/svg%3E");
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }

::selection { background: var(--accent-soft); color: var(--ink); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 2.5rem);
}

.dot { color: var(--accent); }

/* ---------- 顶部导航 ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 246, 239, .85);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .35s ease;
}
.nav.scrolled { border-bottom-color: var(--line); }

.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 1.05rem clamp(1.25rem, 4vw, 2.5rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  letter-spacing: .03em;
  line-height: 1;
}

.nav-links { display: flex; gap: clamp(1.1rem, 4vw, 2.1rem); }
.nav-links a {
  position: relative;
  font-size: .92rem;
  color: var(--ink-soft);
  padding: .25rem 0;
  transition: color .3s ease;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .35s cubic-bezier(.6, 0, .2, 1);
}
.nav-links a:hover,
.nav-links a.active { color: var(--ink); }
.nav-links a:hover::after,
.nav-links a.active::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* ---------- 首屏 ---------- */
.hero {
  position: relative;
  padding: clamp(3.25rem, 8vw, 6rem) 0 clamp(4rem, 9vw, 6.5rem);
}
/* 首屏右上角一抹淡淡的暖色 */
.hero::before {
  content: "";
  position: absolute;
  top: -12%;
  right: -8%;
  width: min(52vw, 620px);
  aspect-ratio: 1;
  background: radial-gradient(circle, var(--accent-soft) 0%, transparent 68%);
  opacity: .55;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.12fr .88fr;
  gap: clamp(2.25rem, 6vw, 4.5rem);
  align-items: center;
}

.hello {
  font-family: var(--font-hand);
  font-size: clamp(1.15rem, 2.4vw, 1.4rem);
  color: var(--accent-deep);
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(4.25rem, 12.5vw, 8.25rem);
  line-height: .96;
  letter-spacing: -.02em;
  margin: .35rem 0 .75rem;
}

.role {
  font-size: .82rem;
  letter-spacing: .22em;
  color: var(--ink-soft);
}

.tagline {
  font-family: var(--font-hand);
  font-size: clamp(1.35rem, 3.2vw, 1.85rem);
  color: var(--ink);
  margin: 1.15rem 0 1.65rem;
}

.chips { display: flex; flex-wrap: wrap; gap: .6rem; margin-bottom: 2.15rem; }
.chip {
  padding: .38rem 1.05rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: .85rem;
  color: var(--ink-soft);
  transition: color .5s ease, border-color .5s ease, background-color .5s ease;
}
.chip.on {
  color: var(--accent-deep);
  border-color: var(--accent);
  background: var(--accent-soft);
}

.hero-actions { display: flex; flex-wrap: wrap; gap: .85rem; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  padding: .85rem 1.75rem;
  border-radius: 999px;
  font-size: .95rem;
  letter-spacing: .02em;
  border: 1px solid transparent;
  transition: background-color .35s ease, color .35s ease, border-color .35s ease, transform .35s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-solid { background: var(--ink); color: var(--paper); }
.btn-solid:hover { background: var(--accent); }
.btn-ghost { border-color: var(--ink); color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--paper); }

/* 首屏小画 */
.hero-art {
  position: relative;
  max-width: 420px;
  margin: 0 auto;
  animation: float 9s ease-in-out infinite alternate;
}
.hero-art .art { width: 100%; height: auto; display: block; overflow: visible; }
.art-caption {
  font-family: var(--font-hand);
  text-align: center;
  color: var(--ink-soft);
  margin-top: 1.15rem;
  font-size: 1.08rem;
}

@keyframes float {
  from { transform: translateY(0); }
  to   { transform: translateY(-10px); }
}

/* 一笔画：路径自带 pathLength="1"，从 1 画到 0 */
.draw {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  animation: draw 1.5s cubic-bezier(.65, 0, .35, 1) forwards;
}
.d1 { animation-delay: .1s; }
.d2 { animation-delay: .28s; }
.d3 { animation-delay: .58s; }
.d4 { animation-delay: .78s; }
.d5 { animation-delay: 1.05s; }
.d6 { animation-delay: 1.2s; }
.d7 { animation-delay: 1.35s; }
.d8 { animation-delay: 1.5s; }
@keyframes draw { to { stroke-dashoffset: 0; } }

.line-ink { stroke: var(--ink); }
.line-ink-soft { stroke: var(--ink-soft); }
.line-accent { stroke: var(--accent); }

.sig {
  font-family: var(--font-hand);
  font-size: 21px;
  fill: var(--accent);
  opacity: .85;
}

/* ---------- 通用小节 ---------- */
.section { padding: clamp(3.75rem, 8.5vw, 6.25rem) 0; }

.section-label {
  display: flex;
  align-items: center;
  gap: .95rem;
  margin-bottom: 1.15rem;
}
.section-label::before {
  content: "";
  width: 2.25rem;
  height: 1px;
  background: var(--accent);
  opacity: .75;
}
.section-label .en {
  font-size: .72rem;
  letter-spacing: .32em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
}
.section-label .zh {
  font-size: .85rem;
  letter-spacing: .18em;
  color: var(--ink-soft);
}

h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.85rem, 4.5vw, 2.65rem);
  line-height: 1.25;
  letter-spacing: -.01em;
  font-weight: 600;
}
h2 .en, h3 .en {
  font-family: var(--font-serif);
  font-size: .55em;
  font-weight: 400;
  letter-spacing: .12em;
  color: var(--ink-soft);
  margin-left: .55rem;
}

/* ---------- 关于我 ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.25fr .75fr;
  gap: clamp(2rem, 5.5vw, 4rem);
  align-items: start;
  margin-top: .5rem;
}
.about-text h2 { margin-bottom: 1.35rem; }
.about-text p { margin-bottom: 1.15rem; color: var(--ink); }
.about-text p:first-of-type { font-size: 1.08rem; }
.about-quote {
  font-family: var(--font-hand);
  font-size: 1.35rem;
  color: var(--accent-deep);
  border-left: 2px solid var(--accent);
  padding-left: 1.15rem;
  margin-top: 1.75rem;
}

.info-card {
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.65rem 1.85rem;
}
.info-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1.25rem;
  padding: .85rem 0;
  border-bottom: 1px dashed var(--line);
}
.info-row:last-child { border-bottom: none; padding-bottom: .25rem; }
.info-row dt {
  font-size: .82rem;
  letter-spacing: .12em;
  color: var(--ink-soft);
  white-space: nowrap;
}
.info-row dd { font-size: .95rem; text-align: right; }
.info-row dd.slot {
  color: var(--accent-deep);
  font-family: var(--font-hand);
  font-size: 1.02rem;
  opacity: .85;
}

/* ---------- 三张兴趣卡片 ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.35rem;
  margin-top: 2.35rem;
}
.card {
  display: flex;
  flex-direction: column;
  gap: .75rem;
  padding: 2.15rem 1.85rem 1.85rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .38);
  transition: transform .4s ease, border-color .4s ease, box-shadow .4s ease;
}
.card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: var(--shadow);
}
.card-icon {
  width: 3.25rem;
  height: 3.25rem;
  color: var(--ink-soft);
  transition: color .4s ease, transform .4s ease;
}
.card-icon svg { width: 100%; height: 100%; }
.card:hover .card-icon { color: var(--accent); transform: rotate(-4deg); }
.card h3 { font-size: 1.28rem; font-weight: 600; letter-spacing: .01em; }
.card p {
  color: var(--ink-soft);
  font-size: .94rem;
  line-height: 1.8;
  flex: 1;
}
.card-more {
  font-size: .85rem;
  letter-spacing: .06em;
  color: var(--accent-deep);
  margin-top: .5rem;
}

/* ---------- 联系 ---------- */
.contact {
  background: var(--paper-deep);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.contact-lead {
  max-width: 34em;
  color: var(--ink-soft);
  margin: 1.15rem 0 2.35rem;
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
.contact-card {
  display: flex;
  align-items: center;
  gap: 1.15rem;
  width: 100%;
  text-align: left;
  padding: 1.55rem 1.65rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  transition: transform .35s ease, border-color .35s ease, box-shadow .35s ease;
}
.contact-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: var(--shadow);
}
.contact-icon {
  flex: none;
  width: 2.25rem;
  height: 2.25rem;
  color: var(--ink);
  transition: color .35s ease;
}
.contact-icon svg { width: 100%; height: 100%; }
.contact-card:hover .contact-icon { color: var(--accent); }
.contact-body { display: flex; flex-direction: column; gap: .15rem; flex: 1; min-width: 0; }
.contact-name {
  font-size: .78rem;
  letter-spacing: .22em;
  color: var(--ink-soft);
  text-transform: uppercase;
}
.contact-name em {
  font-style: normal;
  font-family: var(--font-hand);
  letter-spacing: .08em;
  text-transform: none;
  color: var(--accent-deep);
  margin-left: .5rem;
}
.contact-value {
  font-family: var(--font-serif);
  font-size: clamp(1.02rem, 2.4vw, 1.3rem);
  word-break: break-all;
}
.contact-arrow {
  flex: none;
  font-size: 1.15rem;
  color: var(--ink-soft);
  transition: transform .35s ease, color .35s ease;
}
.contact-card:hover .contact-arrow {
  color: var(--accent);
  transform: translate(3px, -3px);
}

/* ---------- 页脚 ---------- */
.footer { padding: 2.15rem 0; }
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer p { font-size: .85rem; color: var(--ink-soft); }
.footer-links { display: flex; gap: 1.5rem; }
.footer-links a {
  font-size: .85rem;
  color: var(--ink-soft);
  transition: color .3s ease;
}
.footer-links a:hover { color: var(--accent-deep); }

/* ---------- 复制提示条 ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 2.25rem;
  transform: translate(-50%, 140%);
  background: var(--ink);
  color: var(--paper);
  padding: .75rem 1.5rem;
  border-radius: 999px;
  font-size: .88rem;
  opacity: 0;
  transition: transform .45s cubic-bezier(.6, 0, .2, 1), opacity .45s ease;
  z-index: 120;
  pointer-events: none;
}
.toast.show { transform: translate(-50%, 0); opacity: 1; }

/* ---------- 作品页 ---------- */
.works-hero {
  padding: clamp(3rem, 7vw, 5.25rem) 0 clamp(1.5rem, 3vw, 2.25rem);
}
.works-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.75rem, 8vw, 5rem);
  line-height: 1.12;
  letter-spacing: -.015em;
}
.works-note {
  font-family: var(--font-hand);
  font-size: clamp(1.15rem, 2.6vw, 1.45rem);
  color: var(--accent-deep);
  border-left: 2px solid var(--accent);
  padding-left: 1.15rem;
  margin-top: 1.85rem;
  max-width: 32em;
}

.work-section { padding-top: clamp(2.25rem, 5vw, 3.25rem); padding-bottom: clamp(2.25rem, 5vw, 3.25rem); }

.work-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.25rem;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--line);
  padding-bottom: 1.05rem;
  margin-bottom: 1.85rem;
}
.work-head h2 { font-size: clamp(1.45rem, 3.4vw, 1.95rem); }
.work-head .count {
  font-size: .82rem;
  letter-spacing: .16em;
  color: var(--ink-soft);
}

.work-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(215px, 1fr));
  gap: 1.25rem;
}

.frame {
  aspect-ratio: 4 / 5;
  border: 1px dashed var(--line);
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .65rem;
  text-align: center;
  color: var(--ink-soft);
  background: rgba(255, 255, 255, .35);
  overflow: hidden;
  transition: transform .35s ease, border-color .35s ease, background-color .35s ease;
}
.frame:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  border-style: solid;
  background: rgba(255, 255, 255, .7);
}
.frame .plus {
  width: 2.1rem;
  height: 2.1rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 1.15rem;
  font-weight: 300;
  line-height: 1;
  color: var(--accent);
  transition: border-color .35s ease;
}
.frame:hover .plus { border-color: var(--accent); }
.frame small {
  font-size: .72rem;
  letter-spacing: .22em;
}
.frame .hint {
  font-family: var(--font-hand);
  font-size: .95rem;
  padding: 0 1.15rem;
  opacity: .85;
  line-height: 1.7;
}
/* 换成真图后：图片填满格子 */
.frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s ease;
}
.frame:hover img { transform: scale(1.04); }

.works-end {
  text-align: center;
  padding-top: clamp(3rem, 7vw, 4.5rem);
  padding-bottom: clamp(3.5rem, 8vw, 5.5rem);
}
.works-end-text {
  font-family: var(--font-hand);
  font-size: clamp(1.35rem, 3.2vw, 1.85rem);
  color: var(--ink-soft);
  margin-bottom: 1.65rem;
}

/* ---------- 滚动淡入（JS 可用时才隐藏） ---------- */
.js .reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .85s cubic-bezier(.25, .1, .25, 1), transform .85s cubic-bezier(.25, .1, .25, 1);
}
.js .reveal.in { opacity: 1; transform: none; }

/* 同一容器里依次出现的小错落 */
.cards .reveal:nth-child(2), .work-grid .reveal:nth-child(2), .contact-grid .reveal:nth-child(2) { transition-delay: .09s; }
.cards .reveal:nth-child(3), .work-grid .reveal:nth-child(3), .contact-grid .reveal:nth-child(3) { transition-delay: .18s; }
.work-grid .reveal:nth-child(4) { transition-delay: .27s; }

/* ---------- 响应式 ---------- */
@media (max-width: 880px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-art { order: -1; max-width: min(340px, 78vw); }
  .hero::before { width: 80vw; top: -6%; right: -20%; }
  .about-grid { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  body { font-size: 15px; }
  .nav-inner { padding-top: .9rem; padding-bottom: .9rem; }
  .hero-actions .btn { flex: 1; justify-content: center; }
  .work-grid { grid-template-columns: repeat(2, 1fr); gap: .85rem; }
  .frame .hint { font-size: .85rem; padding: 0 .65rem; }
  .info-row { flex-direction: column; gap: .15rem; }
  .info-row dd { text-align: left; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}

/* ---------- 尊重系统的「减少动态效果」设置 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .draw { animation: none; stroke-dashoffset: 0; }
  .hero-art { animation: none; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .btn:hover, .card:hover, .contact-card:hover, .frame:hover { transform: none; }
}