/* ===== TASTE SKILL V2 核心视觉系统 (ANTI-SLOP ARCHITECTURE) ===== */
@import url('https://fonts.googleapis.com/css2?family=Albert+Sans:wght@400;500;600;700&display=swap');

:root {
  --f-sans: "Albert Sans", -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --f-code: ui-monospace, Menlo, Monaco, Consolas, monospace;

  --step-small: clamp(0.875rem, 0.85rem + 0.1vw, 0.9375rem);
  --step-body: clamp(1.0625rem, 1rem + 0.25vw, 1.25rem);
  --step-lead: clamp(1.25rem, 1.1rem + 0.6vw, 1.625rem);
  --step-title: clamp(2.2rem, 1.6rem + 2.8vw, 4.2rem);
  --step-mega: clamp(3.2rem, 2.2rem + 5vw, 6.4rem);

  --margin-page: clamp(24px, 4.5vw, 72px);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  background: #f7f6f2;
  color: #121316;
}

body {
  font-family: var(--f-sans);
  font-size: var(--step-body);
  line-height: 1.55;
  color: inherit;
  background: inherit;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* 链接与排版重置 */
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

/* 页面章节：色彩篇章 (Colour Chapters) */
.chapter {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(96px, 12svh, 140px) var(--margin-page) clamp(48px, 6svh, 72px);
  background: var(--bg-chapter, #f7f6f2);
  color: var(--ink-chapter, #121316);
}

.chapter-inner {
  width: 100%;
  max-width: 1320px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: clamp(24px, 3.5svh, 48px);
  flex-grow: 1;
  justify-content: center;
}

/* 标题规范：任何宽度严格不超过两行 */
.headline {
  font-size: var(--step-mega);
  font-weight: 600;
  line-height: 1.04;
  letter-spacing: -0.04em;
  max-width: 18ch;
}

.headline-sub {
  font-size: var(--step-title);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.035em;
  max-width: 22ch;
}

.lead {
  font-size: var(--step-lead);
  line-height: 1.5;
  max-width: 52ch;
  font-weight: 400;
  opacity: 0.9;
}

.statement {
  font-size: clamp(1.2rem, 1.8vw, 1.8rem);
  line-height: 1.45;
  font-weight: 500;
  max-width: 60ch;
}

/* 顶部极简导航：随章节色彩实时切换 */
.nav-strip {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px var(--margin-page);
  background: var(--nav-bg, #f7f6f2);
  color: var(--nav-ink, #121316);
  transition: background 0.3s var(--ease), color 0.3s var(--ease);
}

.nav-brand {
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.02em;
}

.nav-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.875rem;
}

.nav-chapter-title {
  font-weight: 500;
}

.nav-btn {
  font-size: 0.8125rem;
  padding: 6px 14px;
  border-radius: 4px;
  background: var(--nav-ink, #121316);
  color: var(--nav-bg, #f7f6f2);
  font-weight: 600;
  transition: opacity 0.2s var(--ease);
}
.nav-btn:hover { opacity: 0.85; }

/* 代码与提示词组件 */
pre, code {
  font-family: var(--f-code);
}

.prompt-sheet {
  background: var(--surface-tone, rgba(0, 0, 0, 0.05));
  border-radius: 8px;
  padding: 1.8rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.prompt-title-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  font-size: 0.875rem;
  font-weight: 600;
}

.prompt-text {
  font-family: var(--f-sans);
  font-size: 1.02rem;
  line-height: 1.65;
  white-space: pre-wrap;
  background: var(--surface-card, #ffffff);
  color: #121316;
  padding: 1.4rem 1.6rem;
  border-radius: 6px;
}
.prompt-text mark {
  background: #fde68a;
  color: #78350f;
  padding: 0 4px;
  border-radius: 2px;
}

.prompt-footer {
  font-size: 0.875rem;
  opacity: 0.82;
}

/* 数据表格 */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  background: var(--surface-card, #ffffff);
  color: #121316;
  border-radius: 6px;
  overflow: hidden;
}

.data-table th, .data-table td {
  padding: 0.95rem 1.35rem;
  text-align: left;
  vertical-align: top;
}

.data-table th {
  background: rgba(0, 0, 0, 0.04);
  font-weight: 600;
  font-size: 0.85rem;
}

.data-table tr:not(:last-child) td {
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

/* 栅格排版 */
.grid-two {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 40px);
}
@media (min-width: 860px) {
  .grid-two { grid-template-columns: 1fr 1fr; align-items: stretch; }
}

.grid-three {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.5vw, 32px);
}
@media (min-width: 768px) {
  .grid-three { grid-template-columns: repeat(3, 1fr); }
}

.grid-four {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2vw, 24px);
}
@media (min-width: 720px) {
  .grid-four { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1120px) {
  .grid-four { grid-template-columns: repeat(4, 1fr); }
}

.panel-flat {
  background: var(--surface-card, #ffffff);
  color: var(--surface-ink, #121316);
  padding: clamp(22px, 2.8vw, 36px);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* 交互卡片悬停与点击指示 */
.card-interactive {
  cursor: pointer;
  position: relative;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease);
}
.card-interactive:hover {
  transform: translateY(-3px);
}
.card-top-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 0.2rem;
}
.hint-expand {
  font-size: 0.75rem;
  font-weight: 600;
  opacity: 0.52;
  white-space: nowrap;
  transition: opacity 0.2s var(--ease);
}
.card-interactive:hover .hint-expand {
  opacity: 1;
}

/* 外链通用样式 */
.link-out {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 600;
  color: #0369a1;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: opacity 0.2s;
}
.link-out:hover { opacity: 0.75; }

.btn-link-out {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 4px;
  background: #121316;
  color: #f7f6f2;
  font-size: 0.875rem;
  font-weight: 600;
  transition: opacity 0.2s;
  margin-top: 0.5rem;
}
.btn-link-out:hover { opacity: 0.85; }

/* 标签胶囊 */
.pill-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.06);
  letter-spacing: 0.02em;
}

/* 深度知识卡片抽屉 (Interactive Knowledge Drawer) */
.drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(18, 19, 22, 0.55);
  z-index: 99;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease);
}
.drawer-backdrop.is-active {
  opacity: 1;
  pointer-events: auto;
}

.drawer-panel {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(640px, 94vw);
  background: #ffffff;
  color: #121316;
  z-index: 100;
  transform: translateX(100%);
  transition: transform 0.35s var(--ease);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  padding: clamp(32px, 5vw, 56px);
  gap: 1.5rem;
}
.drawer-panel.is-active {
  transform: translateX(0);
}

.drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}
.drawer-cat {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #0284c7;
}
.drawer-title {
  font-size: clamp(1.6rem, 2.4vw, 2.2rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
  margin-top: 0.3rem;
}
.drawer-close {
  padding: 8px 14px;
  font-size: 0.875rem;
  font-weight: 600;
  background: #f1f0ea;
  border-radius: 4px;
  transition: background 0.2s;
  cursor: pointer;
  white-space: nowrap;
}
.drawer-close:hover { background: #e5e3da; }

.drawer-body {
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
  font-size: 1rem;
  line-height: 1.65;
}
.drawer-section {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.drawer-subtitle {
  font-size: 1.05rem;
  font-weight: 700;
  color: #121316;
}
.drawer-desc {
  opacity: 0.85;
}
.drawer-box-code {
  background: #f7f6f2;
  border-radius: 6px;
  padding: 1rem 1.2rem;
  font-size: 0.875rem;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
}

/* 动效：仅通过 transform 和 opacity，避免重绘 */
.anim-target {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s var(--ease), transform 0.8s var(--ease);
}
.anim-target.in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .anim-target {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* 17 幕：Vibe Coding 常用术语速查表紧凑矩阵布局（适配 1280x800 一屏无滚动容纳 16 词） */
.glossary-groups {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(12px, 1.5vw, 18px);
}
@media (min-width: 720px) {
  .glossary-groups { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1120px) {
  .glossary-groups { grid-template-columns: repeat(4, 1fr); }
}
.glossary-col {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.glossary-group-head {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.35rem 0.65rem;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
}
.glossary-card {
  background: var(--surface-card, #ffffff);
  color: var(--surface-ink, #121316);
  padding: 0.72rem 0.9rem;
  border-radius: 8px;
  border: 1px solid rgba(18, 19, 22, 0.07);
  display: flex;
  flex-direction: column;
  gap: 0.24rem;
  flex: 1;
}
.glossary-card:hover {
  border-color: rgba(18, 19, 22, 0.2);
}
.glossary-term-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.4rem;
}
.glossary-en {
  font-size: 0.96rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.glossary-zh {
  font-size: 0.8rem;
  font-weight: 600;
  opacity: 0.72;
}
.glossary-brief {
  font-size: 0.8rem;
  line-height: 1.42;
  opacity: 0.84;
}