/* =========================================
   WUYI YANCHA GUIDE — style.css
   Theme: Ink, volcanic rock, amber liquor
   ========================================= */

/* --- DESIGN TOKENS --- */
:root {
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);
  --text-hero: clamp(3rem,     0.5rem  + 7vw,    8rem);

  --space-1: 0.25rem;  --space-2: 0.5rem;   --space-3: 0.75rem;
  --space-4: 1rem;     --space-5: 1.25rem;  --space-6: 1.5rem;
  --space-8: 2rem;     --space-10: 2.5rem;  --space-12: 3rem;
  --space-16: 4rem;    --space-20: 5rem;    --space-24: 6rem;

  --radius-sm: 0.375rem;  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;   --radius-xl: 1rem;
  --radius-full: 9999px;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --content-narrow: 640px;
  --content-default: 1000px;
  --content-wide: 1200px;

  --font-display: 'Zodiak', 'Georgia', serif;
  --font-body: 'Satoshi', 'Helvetica Neue', sans-serif;
  --font-chinese: 'Noto Serif SC', 'STSong', serif;
}

/* --- LIGHT MODE --- */
:root, [data-theme="light"] {
  --color-bg:             #f5f2ec;
  --color-surface:        #f8f5ef;
  --color-surface-2:      #faf8f3;
  --color-surface-offset: #ede9e0;
  --color-surface-dynamic: #e4dfd4;
  --color-divider:        #d9d3c6;
  --color-border:         #ccc6b5;

  --color-text:           #251e14;
  --color-text-muted:     #6e6559;
  --color-text-faint:     #b0a99a;
  --color-text-inverse:   #f8f5ef;

  --color-primary:        #8b3a1a;
  --color-primary-hover:  #6e2b10;
  --color-primary-active: #4e1d09;
  --color-primary-highlight: #f0d5c5;

  --color-accent:         #b56c2a;
  --color-accent-light:   #e8c28e;

  --shadow-sm: 0 1px 2px oklch(0.15 0.04 60 / 0.08);
  --shadow-md: 0 4px 12px oklch(0.15 0.04 60 / 0.12);
  --shadow-lg: 0 12px 32px oklch(0.15 0.04 60 / 0.16);

  /* Map colors */
  --color-map-bg:         #e8e3d8;
  --color-zhengyan:       #8b3a1a;
  --color-zhengyan-stroke:#6e2b10;
  --color-zhengyan-text:  #f8f5ef;
  --color-banyan:         #b56c2a;
  --color-banyan-stroke:  #8e4e14;
  --color-banyan-text:    #251e14;
  --color-zhoucha:        #6e8f4a;
  --color-zhoucha-stroke: #4a6630;
  --color-zhoucha-text:   #251e14;
  --color-waishan:        #5a6e5a;
  --color-waishan-stroke: #3d4f3d;
  --color-waishan-text:   #251e14;
  --color-map-text:       #251e14;
  --color-pit:            #f5d080;
  --color-gully:          #9bd4d4;
  --color-river:          #4a80a8;
  --color-compass-n:      #8b3a1a;

  /* Rock illustration */
  --color-rock:           #6e6050;
  --color-rock-2:         #8c7a68;
  --color-rock-line:      #4a3e32;
  --color-mist:           #c8b8a0;
  --color-leaf:           #4a7a30;
  --color-leaf-stem:      #3a6020;
  --color-steam:          #8b3a1a;

  /* Timer */
  --color-timer-bg:       #d9d3c6;
}

/* --- DARK MODE --- */
[data-theme="dark"] {
  --color-bg:             #14100a;
  --color-surface:        #1a1510;
  --color-surface-2:      #201a12;
  --color-surface-offset: #241e16;
  --color-surface-dynamic:#2c251b;
  --color-divider:        #2e2620;
  --color-border:         #3d3428;

  --color-text:           #e8dece;
  --color-text-muted:     #8c7e6e;
  --color-text-faint:     #5c5044;
  --color-text-inverse:   #14100a;

  --color-primary:        #d4804a;
  --color-primary-hover:  #e89c68;
  --color-primary-active: #f0b080;
  --color-primary-highlight: #3a2218;

  --color-accent:         #c4923a;
  --color-accent-light:   #6e5020;

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.3);
  --shadow-md: 0 4px 12px oklch(0 0 0 / 0.4);
  --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.5);

  /* Map colors */
  --color-map-bg:         #1e180e;
  --color-zhengyan:       #d4804a;
  --color-zhengyan-stroke:#e89c68;
  --color-zhengyan-text:  #14100a;
  --color-banyan:         #b89040;
  --color-banyan-stroke:  #d4a850;
  --color-banyan-text:    #e8dece;
  --color-zhoucha:        #5a7a3a;
  --color-zhoucha-stroke: #7a9a50;
  --color-zhoucha-text:   #e8dece;
  --color-waishan:        #485848;
  --color-waishan-stroke: #647864;
  --color-waishan-text:   #e8dece;
  --color-map-text:       #c8b8a0;
  --color-pit:            #f0d070;
  --color-gully:          #60c0c0;
  --color-river:          #5090c0;
  --color-compass-n:      #d4804a;

  /* Rock illustration */
  --color-rock:           #4a3e30;
  --color-rock-2:         #5c4e3c;
  --color-rock-line:      #6a5e50;
  --color-mist:           #5a5044;
  --color-leaf:           #5a9a3a;
  --color-leaf-stem:      #4a7a28;
  --color-steam:          #d4804a;

  /* Timer */
  --color-timer-bg:       #2e2620;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #14100a; --color-surface: #1a1510; --color-surface-2: #201a12;
    --color-surface-offset: #241e16; --color-surface-dynamic: #2c251b;
    --color-divider: #2e2620; --color-border: #3d3428;
    --color-text: #e8dece; --color-text-muted: #8c7e6e; --color-text-faint: #5c5044;
    --color-text-inverse: #14100a;
    --color-primary: #d4804a; --color-primary-hover: #e89c68; --color-primary-active: #f0b080;
    --color-primary-highlight: #3a2218;
    --color-accent: #c4923a; --color-accent-light: #6e5020;
    --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.3); --shadow-md: 0 4px 12px oklch(0 0 0 / 0.4);
    --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.5);
    --color-map-bg: #1e180e; --color-zhengyan: #d4804a; --color-zhengyan-stroke: #e89c68;
    --color-zhengyan-text: #14100a; --color-banyan: #b89040; --color-banyan-stroke: #d4a850;
    --color-banyan-text: #e8dece; --color-zhoucha: #5a7a3a; --color-zhoucha-stroke: #7a9a50;
    --color-zhoucha-text: #e8dece; --color-waishan: #485848; --color-waishan-stroke: #647864;
    --color-waishan-text: #e8dece; --color-map-text: #c8b8a0; --color-pit: #f0d070;
    --color-gully: #60c0c0; --color-river: #5090c0; --color-compass-n: #d4804a;
    --color-rock: #4a3e30; --color-rock-2: #5c4e3c; --color-rock-line: #6a5e50;
    --color-mist: #5a5044; --color-leaf: #5a9a3a; --color-leaf-stem: #4a7a28;
    --color-steam: #d4804a; --color-timer-bg: #2e2620;
  }
}

/* --- BASE RESET --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -webkit-text-size-adjust: none; text-size-adjust: none;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  scroll-behavior: smooth; scroll-padding-top: var(--space-16);
}
body {
  min-height: 100dvh; line-height: 1.6;
  font-family: var(--font-body); font-size: var(--text-base);
  color: var(--color-text); background-color: var(--color-bg);
  transition: background-color 0.3s ease, color 0.3s ease;
}
img, svg { display: block; max-width: 100%; }
ul[role="list"], ol[role="list"] { list-style: none; }
button { cursor: pointer; background: none; border: none; color: inherit; font: inherit; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { text-wrap: balance; line-height: 1.15; font-family: var(--font-display); }
p, li { text-wrap: pretty; max-width: 72ch; }
::selection { background: color-mix(in oklab, var(--color-primary), transparent 75%); color: var(--color-text); }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: var(--radius-sm); }
.hidden { display: none !important; }

/* --- LAYOUT --- */
.container {
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: clamp(var(--space-4), 5vw, var(--space-12));
}

/* --- HEADER --- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in oklab, var(--color-bg), transparent 10%);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-divider);
  transition: box-shadow 0.3s ease;
}
.site-header.scrolled { box-shadow: var(--shadow-sm); }
.header-inner {
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: clamp(var(--space-4), 5vw, var(--space-12));
  height: 60px;
  display: flex; align-items: center; gap: var(--space-8);
}
.logo {
  display: flex; align-items: center; gap: var(--space-3);
  color: var(--color-text);
  transition: opacity var(--transition-interactive);
}
.logo:hover { opacity: 0.7; }
.logo-text {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  white-space: nowrap;
}
.logo-sub {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 300;
  opacity: 0.6;
  margin-left: var(--space-1);
}
.main-nav {
  display: flex; gap: var(--space-6); margin-left: auto;
}
.main-nav a {
  font-size: var(--text-sm); font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition-interactive);
}
.main-nav a:hover { color: var(--color-text); }
.theme-toggle {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  transition: color var(--transition-interactive), background var(--transition-interactive);
  margin-left: var(--space-2);
}
.theme-toggle:hover { color: var(--color-text); background: var(--color-surface-offset); }

/* --- HERO --- */
.hero {
  position: relative; overflow: hidden;
  min-height: 85vh;
  display: flex; align-items: center; justify-content: center;
  padding-block: clamp(var(--space-16), 10vw, var(--space-24));
}
.hero-bg {
  position: absolute; inset: 0; pointer-events: none;
}
.hero-rock-pattern {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 110%, color-mix(in oklab, var(--color-primary), transparent 60%) 0%, transparent 70%),
    radial-gradient(ellipse 60% 40% at 20% 80%, color-mix(in oklab, var(--color-accent), transparent 80%) 0%, transparent 60%),
    radial-gradient(ellipse 50% 30% at 80% 70%, color-mix(in oklab, var(--color-accent), transparent 85%) 0%, transparent 60%);
}
.hero-mist {
  position: absolute; inset: 0;
  background: linear-gradient(to bottom,
    var(--color-bg) 0%,
    transparent 20%,
    transparent 70%,
    var(--color-bg) 100%
  );
}

.hero-content {
  position: relative; z-index: 2;
  text-align: center;
  max-width: 700px;
  padding-inline: var(--space-6);
}
.hero-eyebrow {
  font-size: var(--text-sm); font-weight: 500;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}
.hero-heading {
  margin-bottom: var(--space-6);
}
.hero-chinese {
  display: block;
  font-family: var(--font-chinese);
  font-size: var(--text-hero);
  font-weight: 700;
  line-height: 1;
  color: var(--color-primary);
  letter-spacing: 0.05em;
}
.hero-english {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  color: var(--color-text);
  letter-spacing: 0.02em;
  margin-top: var(--space-2);
}
.hero-tagline {
  font-size: var(--text-lg);
  font-weight: 300;
  color: var(--color-text-muted);
  line-height: 1.55;
  max-width: 56ch;
  margin-inline: auto;
  margin-bottom: var(--space-10);
}
.hero-cta-row {
  display: flex; gap: var(--space-4); justify-content: center; flex-wrap: wrap;
}

/* --- BUTTONS --- */
.btn {
  display: inline-flex; align-items: center;
  padding: var(--space-3) var(--space-8);
  border-radius: var(--radius-full);
  font-size: var(--text-sm); font-weight: 600;
  letter-spacing: 0.03em;
  transition: all var(--transition-interactive);
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-ghost {
  border: 1.5px solid var(--color-border);
  color: var(--color-text);
}
.btn-ghost:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* Scroll hint */
.hero-scroll-hint {
  position: absolute; bottom: var(--space-8); left: 50%; transform: translateX(-50%);
  animation: scrollBounce 2s ease-in-out infinite;
}
.hero-scroll-hint span {
  display: block; width: 1.5px; height: 40px;
  background: linear-gradient(to bottom, var(--color-primary), transparent);
  margin-inline: auto;
}
@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
  50% { transform: translateX(-50%) translateY(8px); opacity: 0.5; }
}

/* --- INTRO BAND --- */
.intro-band {
  background: var(--color-surface);
  border-block: 1px solid var(--color-divider);
  padding-block: var(--space-8);
}
.intro-stats {
  display: flex; align-items: center; justify-content: center;
  gap: var(--space-8); flex-wrap: wrap;
}
.stat { text-align: center; }
.stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 500;
  color: var(--color-primary);
  line-height: 1.1;
}
.stat-label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}
.stat-divider {
  width: 1px; height: 40px;
  background: var(--color-divider);
}
@media (max-width: 600px) { .stat-divider { display: none; } }

/* --- SECTIONS (shared) --- */
section { padding-block: clamp(var(--space-12), 8vw, var(--space-24)); }
.section-header {
  text-align: center;
  margin-bottom: clamp(var(--space-10), 5vw, var(--space-16));
}
.section-eyebrow {
  font-size: var(--text-xs); font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}
.section-header h2 {
  font-size: var(--text-xl); font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}
.section-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 56ch;
  margin-inline: auto;
}

/* --- EXPLAINER --- */
.explainer { background: var(--color-bg); }
.explainer-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-8), 6vw, var(--space-16));
  align-items: center;
}
@media (max-width: 720px) { .explainer-grid { grid-template-columns: 1fr; } }
.explainer-text h2 {
  font-size: var(--text-xl); font-weight: 500;
  margin-bottom: var(--space-5);
}
.explainer-text p {
  color: var(--color-text-muted); line-height: 1.7;
  margin-bottom: var(--space-4);
}
.explainer-text em { color: var(--color-primary); font-style: normal; font-weight: 500; }
.explainer-terms {
  display: flex; flex-direction: column; gap: var(--space-3);
  margin-top: var(--space-6);
  border-left: 2px solid var(--color-primary);
  padding-left: var(--space-5);
}
.term { display: flex; flex-wrap: wrap; align-items: baseline; gap: var(--space-2); }
.term-chinese {
  font-family: var(--font-chinese); font-size: var(--text-lg); font-weight: 700;
  color: var(--color-primary);
}
.term-pinyin { font-style: italic; color: var(--color-text-muted); font-size: var(--text-sm); }
.term-def { font-size: var(--text-sm); color: var(--color-text-muted); width: 100%; margin-top: -4px; }

.explainer-visual {
  display: flex; align-items: center; justify-content: center;
}
.rock-illustration {
  width: min(280px, 100%);
  opacity: 0.9;
}

/* --- CULTIVAR TABS --- */
.cultivars { background: var(--color-surface); }
.cultivar-tabs {
  display: flex; gap: var(--space-2); flex-wrap: wrap;
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-divider);
}
.tab-btn {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm); font-weight: 500;
  color: var(--color-text-muted);
  border: 1.5px solid transparent;
  transition: all var(--transition-interactive);
  white-space: nowrap;
}
.tab-btn:hover { color: var(--color-text); border-color: var(--color-border); }
.tab-btn.active {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-primary-highlight);
}

/* Tea panel */
.cultivar-panel {
  animation: fadeIn 0.25s ease;
}
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.tea-card {
  display: grid; grid-template-columns: 1fr 1.2fr;
  gap: clamp(var(--space-8), 5vw, var(--space-16));
  align-items: start;
  background: var(--color-surface-2);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-6), 4vw, var(--space-10));
}
@media (max-width: 720px) { .tea-card { grid-template-columns: 1fr; } }

.tea-main {}
.tea-header {
  display: flex; align-items: baseline; gap: var(--space-3);
  margin-bottom: var(--space-1);
}
.tea-badge {
  display: inline-flex;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs); font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}
.tea-name-en {
  font-family: var(--font-display);
  font-size: var(--text-xl); font-weight: 500;
  color: var(--color-text);
}
.tea-name-zh {
  font-family: var(--font-chinese);
  font-size: var(--text-lg); font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-5);
}
.tea-desc {
  font-size: var(--text-base); color: var(--color-text-muted);
  line-height: 1.7; margin-bottom: var(--space-5);
}
.tea-legend {
  font-size: var(--text-sm); font-style: italic;
  color: var(--color-text-faint);
  border-left: 2px solid var(--color-divider);
  padding-left: var(--space-4);
  line-height: 1.6;
}

.tea-meta {}
.tea-flavor-tags {
  display: flex; flex-wrap: wrap; gap: var(--space-2);
  margin-bottom: var(--space-5);
}
.flavor-tag {
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs); font-weight: 500;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  background: var(--color-surface-offset);
}
.tea-attributes {
  display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-3);
}
.tea-attr {
  background: var(--color-surface-offset);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
}
.tea-attr-label {
  font-size: var(--text-xs); font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--color-text-faint);
  display: block; margin-bottom: var(--space-1);
}
.tea-attr-val {
  font-size: var(--text-sm); font-weight: 500;
  color: var(--color-text);
}

/* Roast level bars */
.roast-bar-wrap {
  background: var(--color-surface-offset);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
  grid-column: span 2;
}
.roast-label {
  display: flex; justify-content: space-between;
  font-size: var(--text-xs); font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-2);
}
.roast-bar-track {
  height: 6px; border-radius: var(--radius-full);
  background: var(--color-divider);
  overflow: hidden;
}
.roast-bar-fill {
  height: 100%; border-radius: var(--radius-full);
  background: linear-gradient(to right, var(--color-accent-light), var(--color-primary));
  transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- FLAVOR SECTION --- */
.flavor-section { background: var(--color-bg); }
.flavor-ui {
  display: grid; grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  gap: var(--space-8);
  align-items: start;
}
@media (max-width: 800px) { .flavor-ui { grid-template-columns: 1fr; } }

.flavor-controls {
  display: flex; flex-direction: column; gap: var(--space-5);
  min-width: 220px;
}
.flavor-label {
  display: block;
  font-size: var(--text-xs); font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-2);
}
.custom-select-wrap { position: relative; }
.custom-select {
  width: 100%;
  padding: var(--space-2) var(--space-4);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: var(--text-sm); font-weight: 500;
  appearance: none;
  cursor: pointer;
  transition: border-color var(--transition-interactive);
}
.custom-select:hover, .custom-select:focus { border-color: var(--color-primary); outline: none; }

.compare-toggle { display: flex; align-items: center; gap: var(--space-3); cursor: pointer; }
.compare-toggle input { position: absolute; opacity: 0; width: 0; }
.toggle-track {
  width: 40px; height: 22px; border-radius: var(--radius-full);
  background: var(--color-divider); position: relative;
  transition: background var(--transition-interactive);
}
.compare-toggle input:checked + .toggle-track { background: var(--color-primary); }
.toggle-thumb {
  position: absolute; top: 3px; left: 3px;
  width: 16px; height: 16px; border-radius: var(--radius-full);
  background: white;
  transition: transform var(--transition-interactive);
  box-shadow: var(--shadow-sm);
}
.compare-toggle input:checked + .toggle-track .toggle-thumb { transform: translateX(18px); }
.toggle-label { font-size: var(--text-sm); font-weight: 500; color: var(--color-text-muted); }

.flavor-chart-wrap {
  display: flex; justify-content: center; align-items: center;
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  min-height: 360px;
}
.flavor-chart-wrap canvas { max-width: 100%; height: auto !important; }

.flavor-notes {
  grid-column: 1 / -1;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-4);
}
.flavor-note-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}
.flavor-note-name {
  font-family: var(--font-display);
  font-size: var(--text-lg); font-weight: 500;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}
.flavor-note-desc { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.6; }
.flavor-note-color-dot {
  display: inline-block; width: 10px; height: 10px;
  border-radius: var(--radius-full); margin-right: var(--space-2);
  vertical-align: middle;
}

/* --- TERROIR --- */
.terroir-section { background: var(--color-surface); }
.terroir-ui {
  display: grid; grid-template-columns: 1.2fr 1fr;
  gap: clamp(var(--space-8), 5vw, var(--space-12));
  align-items: start;
}
@media (max-width: 800px) { .terroir-ui { grid-template-columns: 1fr; } }

.terroir-map-wrap {}
.terroir-map {
  width: 100%; max-width: 540px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-divider);
  cursor: pointer;
  overflow: visible;
}
.zone {
  cursor: pointer;
  transition: opacity 0.2s ease, filter 0.2s ease;
}
.zone:hover { filter: brightness(1.15); opacity: 0.9 !important; }
.zone.active-zone { filter: brightness(1.25) saturate(1.2); }
.pit-marker, .gully-marker { cursor: pointer; transition: transform 0.2s ease; }
.pit-marker:hover, .gully-marker:hover { transform: scale(1.5); }

.map-legend {
  display: flex; flex-wrap: wrap; gap: var(--space-3) var(--space-5);
  margin-top: var(--space-4);
}
.legend-item {
  display: flex; align-items: center; gap: var(--space-2);
  font-size: var(--text-xs); font-weight: 500; color: var(--color-text-muted);
  cursor: pointer; transition: color var(--transition-interactive);
}
.legend-item:hover { color: var(--color-text); }
.legend-dot {
  width: 12px; height: 12px; border-radius: var(--radius-sm);
  flex-shrink: 0;
}
.zhengyan-dot { background: var(--color-zhengyan); }
.banyan-dot { background: var(--color-banyan); }
.zhoucha-dot { background: var(--color-zhoucha); }
.waishan-dot { background: var(--color-waishan); }

.terroir-info {
  background: var(--color-surface-2);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-6), 4vw, var(--space-10));
  min-height: 340px;
  display: flex; flex-direction: column; justify-content: center;
  transition: all 0.25s ease;
}
.terroir-placeholder {
  text-align: center; color: var(--color-text-faint);
  display: flex; flex-direction: column; align-items: center; gap: var(--space-4);
}
.terroir-detail { animation: fadeIn 0.25s ease; }
.terroir-zone-name {
  font-family: var(--font-display); font-size: var(--text-xl); font-weight: 500;
  color: var(--color-primary); margin-bottom: var(--space-1);
}
.terroir-zone-zh {
  font-family: var(--font-chinese); font-size: var(--text-lg);
  color: var(--color-text-muted); margin-bottom: var(--space-5);
}
.terroir-desc {
  font-size: var(--text-base); color: var(--color-text-muted);
  line-height: 1.7; margin-bottom: var(--space-5);
}
.terroir-facts {
  display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-3);
}
.terroir-fact {
  background: var(--color-surface-offset);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  padding: var(--space-3);
}
.terroir-fact-label {
  font-size: var(--text-xs); font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--color-text-faint);
  display: block; margin-bottom: var(--space-1);
}
.terroir-fact-val { font-size: var(--text-sm); font-weight: 500; color: var(--color-text); }

/* --- BREWING --- */
.brewing-section { background: var(--color-bg); }
.method-tabs {
  display: flex; gap: var(--space-2);
  margin-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-divider);
  padding-bottom: var(--space-4);
}
.method-tab {
  padding: var(--space-2) var(--space-6);
  border-radius: var(--radius-full);
  font-size: var(--text-sm); font-weight: 500;
  color: var(--color-text-muted);
  border: 1.5px solid transparent;
  transition: all var(--transition-interactive);
}
.method-tab:hover { color: var(--color-text); border-color: var(--color-border); }
.method-tab.active { color: var(--color-primary); border-color: var(--color-primary); background: var(--color-primary-highlight); }

.brewing-params {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-4); margin-bottom: var(--space-8);
}
.param-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  text-align: center;
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}
.param-card:hover { border-color: var(--color-primary); box-shadow: var(--shadow-sm); }
.param-icon {
  width: 48px; height: 48px;
  background: var(--color-primary-highlight);
  border-radius: var(--radius-full);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-primary);
  margin: 0 auto var(--space-3);
}
.param-label {
  display: block; font-size: var(--text-xs); font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--color-text-faint); margin-bottom: var(--space-1);
}
.param-val { display: block; font-size: var(--text-base); font-weight: 600; color: var(--color-text); }
.param-note { display: block; font-size: var(--text-xs); color: var(--color-text-muted); margin-top: var(--space-1); }

.sequence-title, .brewing-tips h3 {
  font-family: var(--font-display); font-size: var(--text-lg); font-weight: 500;
  margin-bottom: var(--space-5);
}
.steps-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
  gap: var(--space-3); margin-bottom: var(--space-8);
}
.step-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-2);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-interactive);
}
.step-card:hover { border-color: var(--color-primary); box-shadow: var(--shadow-sm); }
.step-card.current-step { border-color: var(--color-primary); background: var(--color-primary-highlight); }
.step-num {
  font-size: var(--text-xs); font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--color-text-faint);
}
.step-time {
  font-family: var(--font-display); font-size: var(--text-lg); font-weight: 600;
  color: var(--color-primary);
}
.step-unit { font-size: var(--text-xs); color: var(--color-text-muted); }

.brewing-tips {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-5), 4vw, var(--space-8));
  margin-top: var(--space-8);
}
.tips-list { list-style: none; display: flex; flex-direction: column; gap: var(--space-3); }
.tips-list li {
  font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.65;
  padding-left: var(--space-5); position: relative;
}
.tips-list li::before {
  content: "—"; position: absolute; left: 0;
  color: var(--color-primary); font-weight: 600;
}
.tips-list strong { color: var(--color-text); font-weight: 600; }

/* --- TIMER --- */
.timer-section {
  margin-top: clamp(var(--space-10), 6vw, var(--space-16));
  padding: clamp(var(--space-6), 4vw, var(--space-10));
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
}
.timer-title {
  font-family: var(--font-display); font-size: var(--text-lg); font-weight: 500;
  margin-bottom: var(--space-8); text-align: center;
}
.timer-ui {
  display: flex; gap: clamp(var(--space-8), 6vw, var(--space-16));
  align-items: center; justify-content: center; flex-wrap: wrap;
}
.timer-ring-wrap {
  position: relative; width: 120px; height: 120px;
}
.timer-ring { position: absolute; top: 0; left: 0; }
.timer-text-wrap {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.timer-time {
  font-family: var(--font-display); font-size: var(--text-xl); font-weight: 600;
  color: var(--color-text); line-height: 1;
}
.timer-steep-label { font-size: var(--text-xs); color: var(--color-text-muted); margin-top: var(--space-1); }

.timer-controls {
  display: flex; flex-direction: column; gap: var(--space-4); align-items: center;
}
.timer-steep-adj {
  display: flex; align-items: center; gap: var(--space-3);
  font-size: var(--text-sm); font-weight: 600;
  color: var(--color-text);
}
.steep-adj-btn {
  width: 32px; height: 32px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-full);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-text-muted);
  transition: all var(--transition-interactive);
}
.steep-adj-btn:hover { border-color: var(--color-primary); color: var(--color-primary); }
.timer-btn-row { display: flex; gap: var(--space-3); }
.timer-btn {
  padding: var(--space-2) var(--space-8);
  border-radius: var(--radius-full);
  font-size: var(--text-sm); font-weight: 600;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  transition: all var(--transition-interactive);
}
.timer-btn:hover { background: var(--color-primary-hover); transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.timer-btn.running { background: var(--color-primary-hover); }
.timer-btn-secondary {
  background: var(--color-surface-offset);
  color: var(--color-text);
}
.timer-btn-secondary:hover { background: var(--color-surface-dynamic); }
.timer-method-note { font-size: var(--text-xs); color: var(--color-text-faint); }

/* --- FOOTER --- */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-10);
}
.footer-grid {
  display: grid; grid-template-columns: 1.5fr 1fr 1.5fr;
  gap: var(--space-8);
}
@media (max-width: 640px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-logo { font-size: var(--text-sm); gap: var(--space-2); }
.footer-tagline { font-size: var(--text-xs); color: var(--color-text-faint); margin-top: var(--space-2); }
.footer-links {
  display: flex; flex-direction: column; gap: var(--space-2);
}
.footer-links a {
  font-size: var(--text-sm); color: var(--color-text-muted);
  transition: color var(--transition-interactive);
}
.footer-links a:hover { color: var(--color-primary); }
.footer-sources {
  display: flex; flex-direction: column; gap: var(--space-2);
}
.footer-sources-title {
  font-size: var(--text-xs); font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--color-text-faint); margin-bottom: var(--space-1);
}
.footer-sources a {
  font-size: var(--text-xs); color: var(--color-text-muted);
  transition: color var(--transition-interactive);
  text-decoration: underline; text-underline-offset: 3px;
}
.footer-sources a:hover { color: var(--color-primary); }
.footer-bottom {
  margin-top: var(--space-8);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-divider);
  text-align: center;
}
.pplx-credit {
  font-size: var(--text-xs); color: var(--color-text-faint);
  transition: color var(--transition-interactive);
}
.pplx-credit:hover { color: var(--color-text-muted); }

/* --- RESPONSIVE MOBILE --- */
@media (max-width: 480px) {
  .main-nav { display: none; }
  .cultivar-tabs { gap: var(--space-1); }
  .tab-btn { padding: var(--space-2) var(--space-3); font-size: 0.8rem; }
  .timer-ui { flex-direction: column; }
  .terroir-facts { grid-template-columns: 1fr; }
  .tea-attributes { grid-template-columns: 1fr; }
  .roast-bar-wrap { grid-column: span 1; }
}