/* ==================================================
   拾光集 · 个人数字生活馆
   所有样式按区域分类，方便本人阅读和修改
   ================================================== */

:root {
  --paper: #f5f0e4;
  --paper-light: #fffaf0;
  --navy: #15324a;
  --blue: #1e6380;
  --coral: #e05c47;
  --yellow: #f1bd45;
  --green: #52745e;
  --ink: #212b31;
  --gray: #68757b;
  --line: rgba(21, 50, 74, 0.18);
  --shadow: 0 18px 45px rgba(27, 44, 52, 0.14);
  --radius: 4px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    linear-gradient(rgba(21, 50, 74, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(21, 50, 74, 0.035) 1px, transparent 1px);
  background-size: 26px 26px;
  font-family: "Noto Serif SC", "Songti SC", serif;
}

body.dark-theme {
  --paper: #17242b;
  --paper-light: #21323a;
  --ink: #f5eedf;
  --gray: #b5c1c4;
  --line: rgba(255, 255, 255, 0.16);
  --navy: #f5eedf;
}

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

button,
input,
textarea,
select {
  color: inherit;
  font: inherit;
}

button {
  cursor: pointer;
}

img {
  max-width: 100%;
}

.container {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.section {
  padding: 90px 0;
}

.section-soft {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 250, 240, 0.54);
}

.dark-theme .section-soft {
  background: rgba(255, 255, 255, 0.035);
}

.eyebrow {
  color: var(--coral);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 4px;
  text-transform: uppercase;
}

.section-title {
  margin: 12px 0 18px;
  color: var(--navy);
  font-size: clamp(34px, 5vw, 58px);
  font-weight: 800;
  line-height: 1.25;
}

.lead {
  max-width: 650px;
  color: var(--gray);
  font-size: 16px;
  line-height: 2;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 42px;
}

/* ==================== 顶部导航 ==================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  height: 76px;
  border-bottom: 1px solid var(--line);
  background: rgba(245, 240, 228, 0.94);
  backdrop-filter: blur(14px);
}

.dark-theme .site-header {
  background: rgba(23, 36, 43, 0.94);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--navy);
  font-weight: 900;
  letter-spacing: 2px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  color: white;
  background: var(--coral);
  border-radius: 50% 50% 48% 8%;
  box-shadow: 5px 5px 0 var(--yellow);
  transform: rotate(-5deg);
}

.brand small {
  display: block;
  margin-top: 3px;
  color: var(--gray);
  font-size: 8px;
  letter-spacing: 3px;
}

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

.main-nav a {
  position: relative;
  padding: 27px 0;
  color: var(--gray);
  font-size: 13px;
}

.main-nav a::after {
  content: "";
  position: absolute;
  right: 50%;
  bottom: 18px;
  left: 50%;
  height: 2px;
  background: var(--coral);
  transition: 0.2s;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--coral);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  right: 20%;
  left: 20%;
}

.header-buttons {
  display: flex;
  gap: 8px;
}

.round-button,
.menu-button {
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
}

.menu-button {
  display: none;
}

/* ==================== 公共按钮与标签 ==================== */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 24px;
  border: 1px solid var(--navy);
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  transition: 0.25s;
}

.button-primary {
  color: white;
  border-color: var(--coral);
  background: var(--coral);
  box-shadow: 5px 5px 0 var(--navy);
}

.button-secondary {
  color: var(--navy);
  background: transparent;
}

.button:hover {
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 var(--yellow);
}

.tag {
  display: inline-block;
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: 20px;
  color: var(--gray);
  font-size: 11px;
}

.number-label {
  color: var(--coral);
  font:
    700 12px Georgia,
    serif;
  letter-spacing: 2px;
}

/* ==================== 首页 ==================== */
.home-hero {
  min-height: 690px;
  display: grid;
  align-items: center;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 70px;
}

.hero-copy h1 {
  margin: 20px 0 25px;
  color: var(--navy);
  font-size: clamp(58px, 8vw, 106px);
  font-weight: 900;
  line-height: 1.05;
}

.hero-copy h1 em {
  color: var(--coral);
  font-style: normal;
}

.hero-actions {
  display: flex;
  gap: 15px;
  margin-top: 34px;
}

.hero-collage {
  position: relative;
  height: 520px;
}

.sun-shape {
  position: absolute;
  top: 50px;
  right: 20px;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  background: var(--yellow);
}

.photo-card {
  position: absolute;
  padding: 13px 13px 42px;
  background: var(--paper-light);
  box-shadow: var(--shadow);
}

.photo-card::after {
  content: attr(data-caption);
  position: absolute;
  bottom: 12px;
  left: 17px;
  color: var(--gray);
  font-size: 10px;
}

.photo-large {
  top: 65px;
  right: 55px;
  width: 280px;
  transform: rotate(4deg);
}

.photo-small {
  bottom: 45px;
  left: 15px;
  width: 205px;
  transform: rotate(-7deg);
}

.abstract-picture {
  height: 285px;
  background:
    radial-gradient(circle at 70% 28%, var(--yellow) 0 12%, transparent 12.5%),
    linear-gradient(
      155deg,
      transparent 52%,
      var(--green) 52% 68%,
      var(--blue) 68%
    );
}

.photo-small .abstract-picture {
  height: 175px;
  background:
    linear-gradient(
      30deg,
      transparent 40%,
      var(--coral) 40% 57%,
      transparent 57%
    ),
    var(--blue);
}

.tape {
  position: absolute;
  z-index: 2;
  width: 90px;
  height: 26px;
  background: rgba(255, 247, 194, 0.75);
  transform: rotate(-8deg);
}

.tape-one {
  top: 53px;
  right: 155px;
}

.hero-stamp {
  position: absolute;
  right: 2px;
  bottom: 38px;
  width: 92px;
  height: 92px;
  display: grid;
  place-items: center;
  border: 3px double var(--coral);
  border-radius: 50%;
  color: var(--coral);
  font-weight: 900;
  text-align: center;
  transform: rotate(12deg);
}

.quick-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.quick-card {
  min-height: 180px;
  padding: 24px;
  border: 1px solid var(--line);
  background: var(--paper-light);
  transition: 0.25s;
}

.quick-card:nth-child(2n) {
  transform: translateY(18px);
}

.quick-card:hover {
  color: white;
  background: var(--navy);
  transform: translateY(-6px) rotate(-1deg);
}

.quick-card h3 {
  margin: 35px 0 8px;
  font-size: 22px;
}

.quick-card p {
  color: var(--gray);
  font-size: 12px;
  line-height: 1.8;
}

.quick-card:hover p {
  color: rgba(255, 255, 255, 0.7);
}

/* ==================== 内页标题 ==================== */
.page-hero {
  padding: 115px 0 70px;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(120deg, transparent 62%, rgba(241, 189, 69, 0.28) 62%),
    rgba(255, 250, 240, 0.48);
}

.page-hero h1 {
  margin: 15px 0;
  color: var(--navy);
  font-size: clamp(50px, 7vw, 88px);
  line-height: 1.15;
}

.page-index {
  display: inline-block;
  margin-bottom: 14px;
  padding: 6px 11px;
  color: white;
  background: var(--navy);
  font-size: 11px;
  letter-spacing: 2px;
}

/* ==================== 通用卡片与网格 ==================== */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.content-card {
  padding: 28px;
  border: 1px solid var(--line);
  background: var(--paper-light);
  box-shadow: 7px 7px 0 rgba(21, 50, 74, 0.08);
}

.content-card h3 {
  margin: 15px 0 10px;
  color: var(--navy);
  font-size: 22px;
}

.content-card p {
  color: var(--gray);
  line-height: 1.9;
}

.personal-box {
  padding: 22px;
  border: 2px dashed var(--coral);
  background: rgba(224, 92, 71, 0.06);
}

.personal-box strong {
  color: var(--coral);
}

/* ==================== 关于、学习和技能 ==================== */
.about-layout {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  align-items: start;
  gap: 75px;
}

.portrait-card {
  position: relative;
  height: 510px;
  display: grid;
  place-items: center;
  color: white;
  background:
    radial-gradient(circle at 50% 32%, var(--yellow) 0 14%, transparent 14.5%),
    radial-gradient(ellipse at 50% 72%, var(--blue) 0 34%, transparent 34.5%),
    var(--coral);
  box-shadow: var(--shadow);
}

.portrait-card span {
  font-size: 88px;
  font-weight: 900;
}

.fact-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 35px;
  border-top: 1px solid var(--line);
}

.fact-list div {
  padding: 22px 12px 0 0;
}

.fact-list strong {
  display: block;
  color: var(--coral);
  font-size: 28px;
}

.timeline {
  border-left: 2px solid var(--coral);
  margin-left: 12px;
  padding-left: 35px;
}

.timeline-item {
  position: relative;
  margin-bottom: 35px;
  padding: 25px;
  border: 1px solid var(--line);
  background: var(--paper-light);
}

.timeline-item::before {
  content: "";
  position: absolute;
  top: 28px;
  left: -44px;
  width: 14px;
  height: 14px;
  border: 3px solid var(--paper);
  border-radius: 50%;
  background: var(--coral);
}

.skill-row {
  margin-bottom: 24px;
}

.skill-row header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 9px;
}

.skill-bar {
  height: 8px;
  overflow: hidden;
  background: rgba(21, 50, 74, 0.1);
}

.skill-bar span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--coral), var(--yellow));
}

/* ==================== 作品展示 ==================== */
.filter-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.filter-button {
  padding: 9px 17px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: transparent;
}

.filter-button.active,
.filter-button:hover {
  color: white;
  border-color: var(--coral);
  background: var(--coral);
}

.work-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
}

.work-card {
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--paper-light);
  transition: 0.25s;
}

.work-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow);
}

.work-picture {
  height: 220px;
}

.picture-blue {
  background:
    linear-gradient(
      145deg,
      transparent 45%,
      var(--yellow) 45% 62%,
      transparent 62%
    ),
    var(--blue);
}

.picture-coral {
  background:
    radial-gradient(circle at 35% 35%, var(--yellow) 0 16%, transparent 16.5%),
    linear-gradient(135deg, var(--coral), #9d3841);
}

.picture-green {
  background:
    repeating-linear-gradient(
      45deg,
      transparent 0 16px,
      rgba(255, 255, 255, 0.14) 16px 18px
    ),
    var(--green);
}

.work-content {
  padding: 22px;
}

.work-content h3 {
  margin: 10px 0;
  color: var(--navy);
}

/* ==================== 旅行、音乐和相册 ==================== */
.travel-card {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  min-height: 310px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--paper-light);
}

.travel-visual {
  min-height: 300px;
  background:
    radial-gradient(circle at 72% 25%, var(--yellow) 0 10%, transparent 10.5%),
    linear-gradient(
      160deg,
      transparent 48%,
      var(--green) 48% 65%,
      var(--blue) 65%
    );
}

.travel-content {
  padding: 36px;
}

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

.music-item {
  display: grid;
  grid-template-columns: 55px 1fr auto auto;
  align-items: center;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.music-play {
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 210px;
  gap: 15px;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border: 8px solid var(--paper-light);
  box-shadow: 0 10px 25px rgba(21, 50, 74, 0.12);
  cursor: pointer;
}

.gallery-item:nth-child(3n + 1) {
  grid-row: span 2;
}

.gallery-item::after {
  content: attr(data-title);
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  padding: 20px 12px 10px;
  color: white;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.68));
  font-size: 12px;
}

.gallery-one {
  background: linear-gradient(
    160deg,
    #f1bd45 0 35%,
    #1e6380 35% 70%,
    #15324a 70%
  );
}
.gallery-two {
  background:
    radial-gradient(circle at 35% 40%, #f5f0e4 0 11%, transparent 11.5%),
    #e05c47;
}
.gallery-three {
  background: repeating-linear-gradient(
    120deg,
    #52745e 0 28px,
    #6d9278 28px 55px
  );
}
.gallery-four {
  background: linear-gradient(
    30deg,
    #15324a 0 45%,
    #e05c47 45% 64%,
    #f1bd45 64%
  );
}
.gallery-five {
  background:
    radial-gradient(circle at 70% 25%, #f1bd45 0 14%, transparent 14.5%),
    #1e6380;
}
.gallery-six {
  background: linear-gradient(
    155deg,
    #f5f0e4 0 40%,
    #52745e 40% 70%,
    #15324a 70%
  );
}

/* ==================== 笔记、留言和联系 ==================== */
.note-list {
  display: grid;
  gap: 18px;
}

.note-card {
  display: grid;
  grid-template-columns: 100px 1fr auto;
  align-items: center;
  gap: 25px;
  padding: 24px;
  border: 1px solid var(--line);
  background: var(--paper-light);
}

.note-date {
  color: var(--coral);
  font:
    700 13px Georgia,
    serif;
}

.form-card {
  max-width: 720px;
  padding: 38px;
  border: 1px solid var(--line);
  background: var(--paper-light);
  box-shadow: var(--shadow);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  color: var(--navy);
  font-weight: 700;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid var(--line);
  outline: none;
  background: var(--paper);
}

.form-group textarea {
  min-height: 130px;
  resize: vertical;
}

.message-wall {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 45px;
}

.message-note {
  min-height: 170px;
  padding: 24px;
  background: #fff2a9;
  box-shadow: 6px 7px 0 rgba(21, 50, 74, 0.12);
  transform: rotate(-1deg);
}

.message-note:nth-child(2n) {
  background: #d5ebe3;
  transform: rotate(1deg);
}

.contact-list {
  display: grid;
  gap: 15px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 20px;
  border: 1px solid var(--line);
  background: var(--paper-light);
}

.contact-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: white;
  background: var(--blue);
}

/* ==================== 弹层、提示和页脚 ==================== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: none;
  place-items: center;
  padding: 30px;
  background: rgba(10, 25, 34, 0.88);
}

.lightbox.show {
  display: grid;
}

.lightbox-content {
  width: min(720px, 100%);
  padding: 30px;
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.3);
  text-align: center;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  z-index: 80;
  padding: 13px 24px;
  color: white;
  background: var(--navy);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 15px);
  transition: 0.25s;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

.site-footer {
  padding: 48px 0;
  color: var(--gray);
  border-top: 1px solid var(--line);
  text-align: center;
  font-size: 12px;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 22px;
  margin-bottom: 16px;
}

/* ==================== 响应式布局 ==================== */
@media (max-width: 900px) {
  .main-nav {
    position: absolute;
    top: 76px;
    right: 0;
    left: 0;
    display: none;
    flex-direction: column;
    gap: 0;
    padding: 15px 25px;
    border-bottom: 1px solid var(--line);
    background: var(--paper-light);
  }

  .main-nav.show {
    display: flex;
  }

  .main-nav a {
    padding: 13px 0;
  }

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

  .menu-button {
    display: block;
  }

  .hero-grid,
  .about-layout,
  .travel-card {
    grid-template-columns: 1fr;
  }

  .quick-grid,
  .work-grid,
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-3,
  .message-wall {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 620px) {
  .container {
    width: min(100% - 28px, 1160px);
  }

  .section {
    padding: 65px 0;
  }

  .header-buttons .round-button {
    display: none;
  }

  .hero-copy h1 {
    font-size: 58px;
  }

  .hero-collage {
    height: 390px;
  }

  .sun-shape {
    width: 270px;
    height: 270px;
  }

  .photo-large {
    right: 20px;
    width: 220px;
  }

  .photo-small {
    width: 155px;
  }

  .abstract-picture {
    height: 210px;
  }

  .photo-small .abstract-picture {
    height: 125px;
  }

  .quick-grid,
  .grid-2,
  .grid-3,
  .work-grid,
  .message-wall {
    grid-template-columns: 1fr;
  }

  .quick-card:nth-child(2n) {
    transform: none;
  }

  .gallery-grid {
    grid-template-columns: 1fr 1fr;
    grid-auto-rows: 160px;
  }

  .gallery-item:nth-child(3n + 1) {
    grid-row: span 1;
  }

  .section-heading,
  .hero-actions,
  .form-row {
    align-items: stretch;
    flex-direction: column;
    grid-template-columns: 1fr;
  }

  .hero-actions {
    display: flex;
  }

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

  .note-card {
    grid-template-columns: 1fr;
  }

  .music-item {
    grid-template-columns: 42px 1fr auto;
  }

  .music-item .tag {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}