/* SkillLoop — 换技
   Editorial paper system: warm stock, serif display, ink rules, one acid accent. */

:root {
  --paper: #f3f0e7;
  --paper-deep: #e8e3d6;
  --paper-card: #faf7ef;
  --ink: #1d211c;
  --ink-soft: #5f645b;
  --ink-faint: #8b8f85;
  --forest: #173b2e;
  --forest-soft: #24523f;
  --acid: #d6f25b;
  --acid-deep: #b9d63f;
  --orange: #f0653e;
  --line: rgba(29, 33, 28, 0.2);
  --line-strong: rgba(29, 33, 28, 0.45);
  --white: #fffdf6;
  --ok: #2f7a4f;
  --warn: #b26a12;
  --danger: #b83a22;
  --display: "Songti SC", "STSong", "Noto Serif CJK SC", "Source Han Serif SC", "SimSun", serif;
  --body: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Segoe UI", "Microsoft YaHei", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --pad: clamp(18px, 4vw, 56px);
  --max: 1280px;
  --radius: 14px;
  --shadow: 0 1px 0 rgba(29, 33, 28, 0.06), 0 12px 32px -22px rgba(29, 33, 28, 0.5);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; background: var(--paper); -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 6% 2%, rgba(240, 101, 62, 0.07), transparent 26rem),
    radial-gradient(circle at 96% 18%, rgba(23, 59, 46, 0.06), transparent 30rem),
    var(--paper);
  font-family: var(--body);
  font-size: 15px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: 0;
  content: "";
  opacity: 0.3;
  pointer-events: none;
  background-image: radial-gradient(rgba(29, 33, 28, 0.3) 0.5px, transparent 0.7px);
  background-size: 9px 9px;
  mask-image: linear-gradient(to bottom, black, transparent 65%);
}

#app { position: relative; z-index: 1; min-height: 100vh; display: flex; flex-direction: column; }

a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
h1, h2, h3, h4, p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

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

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

.skip-link {
  position: fixed; top: 10px; left: 10px; z-index: 200;
  padding: 10px 16px; background: var(--ink); color: var(--white);
  transform: translateY(-200%); transition: transform 0.15s;
}
.skip-link:focus { transform: none; }

/* ---------------- typography ---------------- */

.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.display { font-family: var(--display); font-weight: 600; letter-spacing: -0.01em; line-height: 1.14; }

.serif { font-family: var(--display); }

.muted { color: var(--ink-soft); }
.faint { color: var(--ink-faint); }
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.nowrap { white-space: nowrap; }

/* ---------------- layout ---------------- */

.shell { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 var(--pad); }

.site-header {
  position: sticky; top: 0; z-index: 40;
  background: rgba(243, 240, 231, 0.86);
  backdrop-filter: blur(12px) saturate(1.1);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex; align-items: center; gap: 20px;
  height: 64px;
}

.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-mark { width: 30px; height: 30px; border-radius: 9px; display: block; }
.brand-name { font-family: var(--display); font-size: 19px; font-weight: 600; letter-spacing: 0.01em; }
.brand-sub { font-family: var(--mono); font-size: 10px; letter-spacing: 0.18em; color: var(--ink-faint); padding-top: 3px; }

.site-nav { display: flex; align-items: center; gap: 2px; margin-left: 8px; }
.nav-link {
  position: relative; padding: 8px 13px; border-radius: 999px;
  font-size: 14px; color: var(--ink-soft); transition: color 0.15s, background 0.15s;
}
.nav-link:hover { color: var(--ink); background: rgba(29, 33, 28, 0.05); }
.nav-link.active { color: var(--ink); background: var(--paper-card); box-shadow: inset 0 0 0 1px var(--line); }
.nav-badge {
  display: inline-grid; place-items: center; min-width: 17px; height: 17px; padding: 0 4px;
  margin-left: 5px; border-radius: 999px; background: var(--orange); color: #fff;
  font-family: var(--mono); font-size: 10px; vertical-align: 1px;
}

.header-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }

.credit-chip {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 6px 12px 6px 10px; border-radius: 999px;
  background: var(--forest); color: var(--paper);
  font-size: 12.5px; white-space: nowrap;
  transition: filter 0.15s;
}
.credit-chip:hover { filter: brightness(1.12); }
.credit-chip b { font-family: var(--mono); font-size: 14px; color: var(--acid); }
.credit-chip .unit { opacity: 0.72; }

.avatar {
  display: inline-grid; place-items: center; flex-shrink: 0;
  width: 38px; height: 38px; border-radius: 50%;
  background: var(--paper-deep); box-shadow: inset 0 0 0 1px var(--line);
  font-size: 19px; line-height: 1;
}
.avatar.sm { width: 30px; height: 30px; font-size: 15px; }
.avatar.lg { width: 68px; height: 68px; font-size: 32px; }
.avatar.xl { width: 88px; height: 88px; font-size: 42px; box-shadow: inset 0 0 0 1px var(--line), 0 0 0 4px var(--paper-card); }

/* user menu */
.menu-wrap { position: relative; }
.menu-trigger {
  display: flex; align-items: center; gap: 8px; padding: 4px 8px 4px 4px;
  background: transparent; border: 0; border-radius: 999px; cursor: pointer;
}
.menu-trigger:hover { background: rgba(29, 33, 28, 0.05); }
.menu-name { font-size: 13.5px; max-width: 84px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.caret { width: 14px; height: 14px; opacity: 0.5; }

.menu-panel {
  position: absolute; right: 0; top: calc(100% + 8px); z-index: 60;
  min-width: 248px; padding: 6px;
  background: var(--paper-card); border: 1px solid var(--line); border-radius: 12px;
  box-shadow: 0 20px 44px -20px rgba(29, 33, 28, 0.55);
  animation: pop 0.12s ease-out;
}
@keyframes pop { from { opacity: 0; transform: translateY(-4px); } }
.menu-label {
  padding: 8px 10px 4px; font-family: var(--mono); font-size: 10px;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-faint);
}
.menu-item {
  display: flex; align-items: center; gap: 10px; width: 100%;
  padding: 8px 10px; border: 0; border-radius: 8px; background: transparent;
  text-align: left; font-size: 13.5px; cursor: pointer;
}
.menu-item:hover { background: rgba(29, 33, 28, 0.06); }
.menu-item.is-current { background: rgba(23, 59, 46, 0.07); }
.menu-item .meta { margin-left: auto; font-family: var(--mono); font-size: 10.5px; color: var(--ink-faint); }
.menu-sep { height: 1px; margin: 6px 4px; background: var(--line); }

/* ---------------- buttons ---------------- */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  padding: 9px 18px; border-radius: 999px;
  border: 1px solid var(--ink); background: transparent; color: var(--ink);
  font-size: 14px; font-weight: 500; line-height: 1.2; cursor: pointer; white-space: nowrap;
  transition: transform 0.12s, background 0.15s, color 0.15s, border-color 0.15s, box-shadow 0.15s;
}
.btn:hover { background: var(--ink); color: var(--paper); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }

.btn-primary { background: var(--forest); border-color: var(--forest); color: var(--paper); }
.btn-primary:hover { background: var(--forest-soft); border-color: var(--forest-soft); color: var(--paper); }

.btn-acid { background: var(--acid); border-color: var(--acid); color: var(--ink); }
.btn-acid:hover { background: var(--acid-deep); border-color: var(--acid-deep); color: var(--ink); }

.btn-ghost { border-color: var(--line); color: var(--ink-soft); }
.btn-ghost:hover { background: rgba(29, 33, 28, 0.06); color: var(--ink); border-color: var(--line-strong); }

.btn-danger { border-color: rgba(184, 58, 34, 0.5); color: var(--danger); }
.btn-danger:hover { background: var(--danger); border-color: var(--danger); color: #fff; }

.btn-sm { padding: 6px 13px; font-size: 12.5px; }
.btn-lg { padding: 13px 26px; font-size: 15.5px; }
.btn-block { width: 100%; }
.btn .icon { width: 15px; height: 15px; }

.link-arrow { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; border-bottom: 1px solid var(--line-strong); padding-bottom: 1px; }
.link-arrow:hover { border-color: var(--ink); }
.link-arrow .icon { width: 14px; height: 14px; }

/* ---------------- cards / panels ---------------- */

.card {
  position: relative;
  background: var(--paper-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.card-pad { padding: clamp(16px, 2.4vw, 24px); }

.section { padding: clamp(26px, 4vw, 44px) 0; }
.section-head {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 16px;
  margin-bottom: 18px;
}
.section-title { font-family: var(--display); font-size: clamp(21px, 2.4vw, 27px); font-weight: 600; letter-spacing: -0.01em; }
.section-desc { margin-top: 5px; font-size: 13.5px; color: var(--ink-soft); max-width: 46ch; }

.rule { height: 1px; background: var(--line); border: 0; margin: 0; }

/* ---------------- badges & chips ---------------- */

.badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 2px 9px; border-radius: 999px;
  font-size: 11.5px; line-height: 1.7; white-space: nowrap;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink-soft);
}
.badge-dot { width: 5px; height: 5px; border-radius: 50%; background: currentColor; }

.badge-perfect { background: var(--acid); border-color: var(--acid-deep); color: #2d3a06; font-weight: 600; }
.badge-teach { background: rgba(23, 59, 46, 0.08); border-color: rgba(23, 59, 46, 0.22); color: var(--forest); }
.badge-learn { background: rgba(240, 101, 62, 0.09); border-color: rgba(240, 101, 62, 0.28); color: #a53e1e; }
.badge-pending { background: rgba(178, 106, 18, 0.1); border-color: rgba(178, 106, 18, 0.3); color: var(--warn); }
.badge-accepted { background: rgba(47, 122, 79, 0.1); border-color: rgba(47, 122, 79, 0.3); color: var(--ok); }
.badge-completed { background: var(--forest); border-color: var(--forest); color: var(--paper); }
.badge-declined, .badge-cancelled { background: rgba(29, 33, 28, 0.05); color: var(--ink-faint); }

.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--paper);
  font-size: 12.5px; line-height: 1.5;
}
.chip .skill-name { font-weight: 500; }
.chip .chip-hint { font-size: 11px; color: var(--ink-faint); }
.chip-teach { border-color: rgba(23, 59, 46, 0.24); background: rgba(23, 59, 46, 0.055); }
.chip-learn { border-color: rgba(240, 101, 62, 0.26); background: rgba(240, 101, 62, 0.06); }
.chip-row { display: flex; flex-wrap: wrap; gap: 6px; }

.pill-row { display: flex; flex-wrap: wrap; gap: 7px; }
.filter-pill {
  padding: 6px 13px; border-radius: 999px; border: 1px solid var(--line);
  background: transparent; color: var(--ink-soft); font-size: 13px; cursor: pointer;
  transition: all 0.15s;
}
.filter-pill:hover { border-color: var(--line-strong); color: var(--ink); }
.filter-pill.active { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.filter-pill .n { font-family: var(--mono); font-size: 11px; opacity: 0.65; margin-left: 4px; }

.stars { display: inline-flex; gap: 1px; color: var(--warn); font-size: 12px; letter-spacing: 1px; }
.stars .off { opacity: 0.22; }

/* ---------------- forms ---------------- */

.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.label { font-size: 12.5px; font-weight: 500; color: var(--ink-soft); display: flex; justify-content: space-between; align-items: baseline; }
.label .hint { font-weight: 400; font-size: 11.5px; color: var(--ink-faint); font-family: var(--mono); }

.input, .select, .textarea {
  width: 100%; padding: 10px 12px;
  border: 1px solid var(--line); border-radius: 10px;
  background: var(--white); color: var(--ink);
  font-size: 14px; line-height: 1.45;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.input:focus, .select:focus, .textarea:focus {
  outline: none; border-color: var(--forest); box-shadow: 0 0 0 3px rgba(23, 59, 46, 0.1);
}
.input::placeholder, .textarea::placeholder { color: var(--ink-faint); }
.textarea { resize: vertical; min-height: 84px; }
.select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--ink-soft) 50%), linear-gradient(135deg, var(--ink-soft) 50%, transparent 50%); background-position: calc(100% - 16px) 50%, calc(100% - 11px) 50%; background-size: 5px 5px, 5px 5px; background-repeat: no-repeat; padding-right: 32px; }

.radio-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.radio-card {
  position: relative; padding: 11px 13px; border: 1px solid var(--line); border-radius: 10px;
  background: var(--white); cursor: pointer; transition: all 0.15s;
}
.radio-card input { position: absolute; opacity: 0; pointer-events: none; }
.radio-card .rc-title { font-size: 13.5px; font-weight: 600; }
.radio-card .rc-desc { font-size: 11.5px; color: var(--ink-soft); margin-top: 2px; line-height: 1.45; }
.radio-card:has(input:checked) { border-color: var(--forest); box-shadow: inset 0 0 0 1px var(--forest); background: rgba(23, 59, 46, 0.04); }
.radio-card:has(input:disabled) { opacity: 0.5; cursor: not-allowed; }

.rating-input { display: inline-flex; gap: 4px; }
.rating-input button {
  border: 0; background: transparent; cursor: pointer; font-size: 26px; line-height: 1;
  color: var(--line-strong); padding: 0 2px; transition: transform 0.1s, color 0.1s;
}
.rating-input button:hover { transform: scale(1.12); }
.rating-input button.on { color: var(--warn); }

.form-error { color: var(--danger); font-size: 12.5px; min-height: 18px; }

/* ---------------- landing ---------------- */

.landing { flex: 1; }

.hero { padding: clamp(36px, 6vw, 76px) 0 clamp(20px, 3vw, 32px); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); gap: clamp(24px, 5vw, 64px); align-items: center; }

.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 5px 12px 5px 8px; margin-bottom: 22px;
  border: 1px solid var(--line); border-radius: 999px; background: var(--paper-card);
  font-size: 12px; color: var(--ink-soft);
}
.hero-tag .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--orange); box-shadow: 0 0 0 3px rgba(240, 101, 62, 0.16); }
.hero-tag .mono { font-size: 11px; letter-spacing: 0.08em; }

.hero h1 { font-size: clamp(40px, 6.2vw, 76px); line-height: 1.06; letter-spacing: -0.025em; }
.hero h1 .accent { position: relative; white-space: nowrap; }
.hero h1 .accent::after {
  content: ""; position: absolute; left: -2px; right: -2px; bottom: 0.1em; height: 0.28em;
  background: var(--acid); z-index: -1; transform: rotate(-0.6deg);
}
.hero-lead { margin-top: 20px; max-width: 34rem; font-size: clamp(15px, 1.35vw, 17px); color: var(--ink-soft); }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 28px; }
.hero-note { margin-top: 14px; font-size: 12.5px; color: var(--ink-faint); }
.hero-note b { color: var(--ink-soft); font-weight: 500; }

/* ticket visual */
.ticket {
  position: relative; padding: 22px; border-radius: 16px;
  background: var(--forest); color: var(--paper);
  box-shadow: 0 30px 60px -34px rgba(23, 59, 46, 0.9);
  transform: rotate(-1.2deg);
}
.ticket::before, .ticket::after {
  content: ""; position: absolute; top: 50%; width: 18px; height: 18px; border-radius: 50%;
  background: var(--paper); transform: translateY(-50%);
}
.ticket::before { left: -9px; }
.ticket::after { right: -9px; }
.ticket-head { display: flex; justify-content: space-between; align-items: center; font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.14em; opacity: 0.72; }
.ticket-body { display: grid; grid-template-columns: 1fr auto 1fr; gap: 10px; align-items: center; margin: 20px 0; }
.ticket-person { display: flex; flex-direction: column; align-items: center; gap: 7px; text-align: center; }
.ticket-person .avatar { background: rgba(255, 253, 246, 0.12); box-shadow: inset 0 0 0 1px rgba(255, 253, 246, 0.2); }
.ticket-person .nm { font-size: 13px; }
.ticket-person .sk { font-family: var(--mono); font-size: 10.5px; color: var(--acid); letter-spacing: 0.04em; }
.ticket-swap { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; border: 1px dashed rgba(214, 242, 91, 0.5); color: var(--acid); }
.ticket-swap .icon { width: 20px; height: 20px; }
.ticket-foot { border-top: 1px dashed rgba(255, 253, 246, 0.24); padding-top: 13px; display: flex; justify-content: space-between; font-size: 11.5px; opacity: 0.8; }
.ticket-perf { position: absolute; inset: auto 22px 52px; height: 1px; background: repeating-linear-gradient(90deg, rgba(255,253,246,.22) 0 4px, transparent 4px 9px); }

/* steps */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.step { padding: 22px 20px; border-left: 1px solid var(--line); }
.step:first-child { border-left: 0; padding-left: 0; }
.step-no { font-family: var(--mono); font-size: 11px; color: var(--ink-faint); letter-spacing: 0.12em; }
.step h3 { font-family: var(--display); font-size: 17px; font-weight: 600; margin-top: 8px; }
.step p { margin-top: 6px; font-size: 13px; color: var(--ink-soft); }

.stat-strip { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--paper-card); }
.stat-cell { padding: 18px 20px; border-left: 1px solid var(--line); }
.stat-cell:first-child { border-left: 0; }
.stat-cell .v { font-family: var(--display); font-size: clamp(24px, 2.8vw, 32px); line-height: 1.1; }
.stat-cell .k { margin-top: 3px; font-size: 12px; color: var(--ink-soft); }

.demo-strip {
  display: flex; flex-wrap: wrap; align-items: center; gap: 14px;
  padding: 18px 20px; border-radius: var(--radius);
  background: var(--forest); color: var(--paper);
}
.demo-strip .t { font-family: var(--display); font-size: 17px; }
.demo-strip .d { font-size: 12.5px; opacity: 0.72; }

/* ---------------- match / people ---------------- */

.matcher { display: grid; grid-template-columns: repeat(auto-fill, minmax(310px, 1fr)); gap: 14px; }

.person-card {
  display: flex; flex-direction: column; gap: 13px;
  padding: 18px; border-radius: var(--radius);
  background: var(--paper-card); border: 1px solid var(--line);
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
}
.person-card:hover { border-color: var(--line-strong); box-shadow: var(--shadow); transform: translateY(-1px); }
.person-card.perfect { border-color: rgba(185, 214, 63, 0.9); box-shadow: inset 0 0 0 1px var(--acid), var(--shadow); }
.person-top { display: flex; gap: 12px; align-items: flex-start; }
.person-id { min-width: 0; flex: 1; }
.person-name { font-family: var(--display); font-size: 18px; font-weight: 600; display: flex; align-items: center; gap: 7px; }
.person-meta { font-size: 12px; color: var(--ink-faint); margin-top: 1px; display: flex; align-items: center; gap: 7px; flex-wrap: wrap; }
.person-headline { font-size: 13px; color: var(--ink-soft); margin-top: 6px; }
.person-skills { display: flex; flex-direction: column; gap: 7px; }
.skill-line { display: flex; gap: 8px; align-items: baseline; font-size: 12.5px; min-width: 0; }
.skill-label { flex-shrink: 0; width: 42px; font-family: var(--mono); font-size: 10px; letter-spacing: 0.06em; padding-top: 2px; }
.skill-label.t { color: var(--forest); }
.skill-label.l { color: var(--orange); }
.skill-text { color: var(--ink); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.person-reason {
  display: flex; align-items: flex-start; gap: 8px;
  padding: 9px 11px; border-radius: 9px;
  background: rgba(23, 59, 46, 0.05); border: 1px solid rgba(23, 59, 46, 0.12);
  font-size: 12.5px; color: var(--forest); line-height: 1.5;
}
.person-card.perfect .person-reason { background: rgba(214, 242, 91, 0.22); border-color: rgba(185, 214, 63, 0.55); }
.person-reason .icon { width: 14px; height: 14px; flex-shrink: 0; margin-top: 2px; }
.person-foot { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: auto; padding-top: 3px; }
.score { display: inline-flex; align-items: center; gap: 6px; font-family: var(--mono); font-size: 11px; color: var(--ink-faint); }
.score-bar { width: 46px; height: 3px; border-radius: 2px; background: var(--paper-deep); overflow: hidden; }
.score-bar i { display: block; height: 100%; background: var(--forest); }

.search-bar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 16px; }
.search-input-wrap { position: relative; flex: 1; min-width: 220px; }
.search-input-wrap .icon { position: absolute; left: 13px; top: 50%; transform: translateY(-50%); width: 16px; height: 16px; color: var(--ink-faint); }
.search-input-wrap .input { padding-left: 38px; border-radius: 999px; }

.empty {
  display: flex; flex-direction: column; align-items: center; gap: 10px; text-align: center;
  padding: clamp(30px, 5vw, 56px) 20px;
  border: 1px dashed var(--line-strong); border-radius: var(--radius);
  background: rgba(250, 247, 239, 0.5);
}
.empty .glyph { font-size: 30px; }
.empty h3 { font-family: var(--display); font-size: 18px; font-weight: 600; }
.empty p { font-size: 13.5px; color: var(--ink-soft); max-width: 42ch; }

/* ---------------- page head ---------------- */

.page { flex: 1; padding: clamp(22px, 3.4vw, 40px) 0 clamp(48px, 6vw, 80px); }
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; flex-wrap: wrap; margin-bottom: 22px; }
.page-title { font-family: var(--display); font-size: clamp(26px, 3.6vw, 38px); font-weight: 600; letter-spacing: -0.015em; line-height: 1.15; }
.page-sub { margin-top: 6px; color: var(--ink-soft); font-size: 14px; max-width: 56ch; }

.breadcrumb { display: flex; align-items: center; gap: 7px; font-size: 12.5px; color: var(--ink-faint); margin-bottom: 14px; }
.breadcrumb a:hover { color: var(--ink); }

/* ---------------- exchanges ---------------- */

.segmented {
  display: inline-flex; padding: 3px; gap: 2px;
  background: var(--paper-deep); border-radius: 999px; margin-bottom: 20px;
  max-width: 100%; overflow-x: auto;
}
.segmented button {
  border: 0; background: transparent; padding: 7px 15px; border-radius: 999px;
  font-size: 13.5px; color: var(--ink-soft); cursor: pointer; white-space: nowrap;
}
.segmented button.active { background: var(--paper-card); color: var(--ink); box-shadow: 0 1px 3px rgba(29,33,28,.14); }
.segmented .n { font-family: var(--mono); font-size: 11px; opacity: 0.6; margin-left: 4px; }

.exchange-list { display: flex; flex-direction: column; gap: 10px; }

.exchange-row {
  display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 16px; align-items: center;
  padding: 16px 18px; border-radius: var(--radius);
  background: var(--paper-card); border: 1px solid var(--line);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.exchange-row:hover { border-color: var(--line-strong); box-shadow: var(--shadow); }
.exchange-row.attention { border-left: 3px solid var(--orange); }
.ex-pair { display: flex; align-items: center; }
.ex-pair .avatar + .avatar { margin-left: -9px; box-shadow: inset 0 0 0 1px var(--line), 0 0 0 2px var(--paper-card); }
.ex-main { min-width: 0; }
.ex-title { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 14.5px; font-weight: 500; }
.ex-title .skill { font-family: var(--display); font-size: 16px; font-weight: 600; }
.ex-sub { margin-top: 3px; font-size: 12.5px; color: var(--ink-soft); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ex-side { display: flex; flex-direction: column; align-items: flex-end; gap: 6px; }
.ex-time { font-family: var(--mono); font-size: 11px; color: var(--ink-faint); }

/* exchange detail */
.detail-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 18px; align-items: start; }
.detail-panel { padding: clamp(18px, 2.4vw, 26px); }
.detail-title { font-family: var(--display); font-size: clamp(22px, 2.6vw, 28px); font-weight: 600; line-height: 1.2; }
.detail-title .x { color: var(--ink-faint); font-weight: 400; margin: 0 6px; font-size: 0.8em; }

.swap-diagram { display: grid; grid-template-columns: 1fr auto 1fr; gap: 10px; align-items: center; margin: 18px 0; }
.sd-side { display: flex; flex-direction: column; gap: 6px; align-items: center; text-align: center; padding: 14px 10px; border-radius: 12px; background: var(--paper); border: 1px solid var(--line); }
.sd-side .nm { font-size: 13px; font-weight: 500; }
.sd-side .sk { font-family: var(--mono); font-size: 10.5px; color: var(--ink-soft); }
.sd-arrow { display: flex; flex-direction: column; gap: 3px; align-items: center; color: var(--forest); }
.sd-arrow .icon { width: 18px; height: 18px; }
.sd-arrow .lbl { font-family: var(--mono); font-size: 9px; letter-spacing: 0.1em; white-space: nowrap; }

.meta-list { display: grid; gap: 0; border-top: 1px solid var(--line); margin-top: 4px; }
.meta-row { display: flex; justify-content: space-between; gap: 16px; padding: 10px 0; border-bottom: 1px solid var(--line); font-size: 13px; }
.meta-row .k { color: var(--ink-soft); flex-shrink: 0; }
.meta-row .v { text-align: right; }

.action-bar { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.notice {
  display: flex; gap: 9px; align-items: flex-start;
  padding: 11px 13px; border-radius: 10px; font-size: 12.8px; line-height: 1.55;
  background: rgba(23, 59, 46, 0.05); border: 1px solid rgba(23, 59, 46, 0.14); color: var(--forest);
  margin-top: 14px;
}
.notice.warn { background: rgba(178, 106, 18, 0.08); border-color: rgba(178, 106, 18, 0.24); color: var(--warn); }
.notice .icon { width: 15px; height: 15px; flex-shrink: 0; margin-top: 2px; }

.chat-panel { display: flex; flex-direction: column; min-height: 420px; max-height: calc(100vh - 120px); }
.chat-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.chat-title { font-family: var(--display); font-size: 17px; font-weight: 600; }
.chat-scroll { flex: 1; overflow-y: auto; padding: 16px 2px; display: flex; flex-direction: column; gap: 12px; min-height: 200px; }
.msg { display: flex; gap: 9px; max-width: 88%; }
.msg.mine { margin-left: auto; flex-direction: row-reverse; }
.msg-bubble { padding: 9px 13px; border-radius: 14px; background: var(--paper); border: 1px solid var(--line); font-size: 13.5px; line-height: 1.55; white-space: pre-wrap; word-break: break-word; }
.msg.mine .msg-bubble { background: var(--forest); border-color: var(--forest); color: var(--paper); }
.msg-meta { font-family: var(--mono); font-size: 10px; color: var(--ink-faint); margin-top: 3px; }
.msg.mine .msg-meta { text-align: right; }
.chat-compose { display: flex; gap: 8px; padding-top: 12px; border-top: 1px solid var(--line); align-items: flex-end; }
.chat-compose .input { border-radius: 12px; }
.chat-closed { padding: 14px; text-align: center; font-size: 12.5px; color: var(--ink-faint); border-top: 1px solid var(--line); }

.review-block { margin-top: 18px; padding-top: 18px; border-top: 1px solid var(--line); }
.review-item { padding: 12px 0; border-bottom: 1px dashed var(--line); }
.review-item:last-child { border-bottom: 0; padding-bottom: 0; }
.review-head { display: flex; align-items: center; gap: 8px; font-size: 12.5px; }
.review-body { margin-top: 5px; font-size: 13px; color: var(--ink-soft); }
.review-form { display: flex; flex-direction: column; gap: 10px; }

/* ---------------- profile ---------------- */

.profile-grid { display: grid; grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); gap: 18px; align-items: start; }

.profile-card { padding: clamp(20px, 2.6vw, 28px); }
.profile-id { display: flex; gap: 16px; align-items: flex-start; }
.profile-name { font-family: var(--display); font-size: clamp(24px, 3vw, 32px); font-weight: 600; line-height: 1.1; }
.profile-headline { margin-top: 4px; font-size: 13.5px; color: var(--ink-soft); }
.profile-bio { margin-top: 14px; font-size: 13.5px; line-height: 1.7; color: var(--ink-soft); }
.profile-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: 18px; background: var(--line); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.profile-stats > div { background: var(--paper-card); padding: 12px 10px; text-align: center; }
.profile-stats .v { font-family: var(--display); font-size: 20px; line-height: 1.1; }
.profile-stats .k { font-size: 11px; color: var(--ink-faint); margin-top: 2px; }

.skill-block { padding: clamp(18px, 2.4vw, 24px); }
.skill-block-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.skill-block-title { font-family: var(--display); font-size: 18px; font-weight: 600; display: flex; align-items: center; gap: 8px; }
.skill-item {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 12px 0; border-bottom: 1px solid var(--line);
}
.skill-item:last-child { border-bottom: 0; }
.skill-item-main { flex: 1; min-width: 0; }
.skill-item-title { display: flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 500; }
.skill-item-desc { margin-top: 3px; font-size: 12.5px; color: var(--ink-soft); line-height: 1.55; }
.icon-btn {
  display: grid; place-items: center; width: 28px; height: 28px; flex-shrink: 0;
  border: 1px solid transparent; border-radius: 8px; background: transparent;
  color: var(--ink-faint); cursor: pointer; transition: all 0.15s;
}
.icon-btn:hover { background: rgba(184, 58, 34, 0.08); color: var(--danger); border-color: rgba(184, 58, 34, 0.2); }
.icon-btn .icon { width: 14px; height: 14px; }

.add-form { margin-top: 14px; padding: 14px; border-radius: 12px; background: var(--paper); border: 1px dashed var(--line-strong); }
.add-form .field { margin-bottom: 10px; }

.ledger-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.ledger-table th { text-align: left; padding: 8px 10px; font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); border-bottom: 1px solid var(--line); font-weight: 400; }
.ledger-table td { padding: 11px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.ledger-table tr:last-child td { border-bottom: 0; }
.ledger-table .amt { font-family: var(--mono); font-weight: 600; text-align: right; white-space: nowrap; }
.ledger-table .amt.pos { color: var(--ok); }
.ledger-table .amt.neg { color: var(--ink-soft); }
.ledger-balance { display: flex; align-items: baseline; gap: 8px; }
.ledger-balance .big { font-family: var(--display); font-size: 40px; line-height: 1; }
.ledger-balance .unit { font-size: 12.5px; color: var(--ink-soft); }

/* ---------------- dialog / toast ---------------- */

dialog.modal {
  width: min(560px, calc(100vw - 32px)); max-height: calc(100vh - 48px);
  padding: 0; border: 1px solid var(--line); border-radius: 16px;
  background: var(--paper-card); color: var(--ink);
  box-shadow: 0 40px 90px -30px rgba(29, 33, 28, 0.6);
  overflow: auto;
}
dialog.modal::backdrop { background: rgba(29, 33, 28, 0.34); backdrop-filter: blur(3px); }
.modal-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; padding: 20px 22px 0; }
.modal-title { font-family: var(--display); font-size: 21px; font-weight: 600; }
.modal-sub { margin-top: 4px; font-size: 12.5px; color: var(--ink-soft); }
.modal-body { padding: 18px 22px; }
.modal-foot { display: flex; justify-content: flex-end; gap: 8px; padding: 0 22px 20px; }
.modal-close { border: 0; background: transparent; cursor: pointer; color: var(--ink-faint); padding: 4px; border-radius: 6px; line-height: 0; }
.modal-close:hover { background: rgba(29,33,28,.06); color: var(--ink); }

.toast-root { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); z-index: 300; display: flex; flex-direction: column; gap: 8px; align-items: center; pointer-events: none; width: max-content; max-width: calc(100vw - 32px); }
.toast {
  display: flex; align-items: center; gap: 9px;
  padding: 10px 16px; border-radius: 999px;
  background: var(--ink); color: var(--paper); font-size: 13.5px;
  box-shadow: 0 16px 40px -16px rgba(29, 33, 28, 0.7);
  animation: toast-in 0.2s ease-out;
}
.toast.error { background: var(--danger); }
.toast.success { background: var(--forest); }
.toast .icon { width: 15px; height: 15px; }
@keyframes toast-in { from { opacity: 0; transform: translateY(10px); } }

/* ---------------- auth ---------------- */

.auth-wrap { flex: 1; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 440px); gap: clamp(24px, 5vw, 70px); align-items: center; padding: clamp(26px, 5vw, 64px) 0; }
.auth-side h1 { font-size: clamp(30px, 4vw, 46px); line-height: 1.1; letter-spacing: -0.02em; }
.auth-side p { margin-top: 16px; font-size: 15px; color: var(--ink-soft); max-width: 34ch; }
.auth-quote { margin-top: 30px; padding-top: 22px; border-top: 1px solid var(--line); font-family: var(--display); font-size: 17px; line-height: 1.6; color: var(--ink-soft); }
.auth-card { padding: clamp(22px, 3vw, 30px); }
.auth-tabs { display: flex; gap: 4px; margin-bottom: 20px; border-bottom: 1px solid var(--line); }
.auth-tab { border: 0; background: transparent; padding: 9px 2px; margin-right: 18px; font-size: 14px; color: var(--ink-faint); cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.auth-tab.active { color: var(--ink); border-bottom-color: var(--ink); }
.demo-login { margin-top: 18px; padding-top: 18px; border-top: 1px dashed var(--line); }
.demo-btns { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 10px; }
.demo-btn { display: flex; flex-direction: column; align-items: center; gap: 5px; padding: 10px 6px; border: 1px solid var(--line); border-radius: 10px; background: var(--paper); cursor: pointer; font-size: 12px; transition: all 0.15s; }
.demo-btn:hover { border-color: var(--forest); background: var(--white); }
.demo-btn .avatar { width: 30px; height: 30px; font-size: 15px; }

/* ---------------- footer ---------------- */

.site-footer { border-top: 1px solid var(--line); margin-top: auto; }
.footer-inner { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; justify-content: space-between; padding: 22px 0; font-size: 12px; color: var(--ink-faint); }
.footer-inner .fnote { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------------- loading ---------------- */

.skeleton { border-radius: 8px; background: linear-gradient(90deg, var(--paper-deep) 25%, var(--paper-card) 50%, var(--paper-deep) 75%); background-size: 200% 100%; animation: shimmer 1.3s infinite; }
@keyframes shimmer { to { background-position: -200% 0; } }
.page-loading { display: flex; flex-direction: column; gap: 12px; padding: 40px 0; }
.page-loading .skeleton { height: 18px; }

/* ---------------- responsive ---------------- */

.mobile-nav { display: none; }

@media (max-width: 940px) {
  .hero-grid { grid-template-columns: 1fr; }
  .ticket { max-width: 420px; transform: rotate(-0.6deg); }
  .steps { grid-template-columns: 1fr 1fr; }
  .step:nth-child(3) { border-left: 0; padding-left: 0; }
  .step:nth-child(n + 3) { border-top: 1px solid var(--line); }
  .detail-grid, .profile-grid { grid-template-columns: 1fr; }
  .chat-panel { max-height: none; }
  .auth-wrap { grid-template-columns: 1fr; }
  .auth-side { display: none; }
}

@media (max-width: 720px) {
  body { font-size: 14.5px; }
  .header-inner { height: 56px; gap: 10px; }
  .site-nav { display: none; }
  .brand-sub { display: none; }
  .menu-name { display: none; }
  .credit-chip { padding: 5px 10px; }
  .stat-strip { grid-template-columns: 1fr 1fr; }
  .stat-cell:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }
  .stat-cell:nth-child(4) { border-top: 1px solid var(--line); }
  .matcher { grid-template-columns: 1fr; }
  .exchange-row { grid-template-columns: auto minmax(0, 1fr); gap: 12px; }
  .ex-side { grid-column: 1 / -1; flex-direction: row; align-items: center; justify-content: space-between; }
  .field-row { grid-template-columns: 1fr; }
  .demo-btns { grid-template-columns: repeat(2, 1fr); }
  .page { padding-bottom: 92px; }
  .site-footer { padding-bottom: 72px; }
  .mobile-nav {
    display: flex; position: fixed; bottom: 0; left: 0; right: 0; z-index: 50;
    background: rgba(243, 240, 231, 0.96); backdrop-filter: blur(12px);
    border-top: 1px solid var(--line); padding: 6px 8px calc(6px + env(safe-area-inset-bottom));
  }
  .mobile-nav a {
    flex: 1; display: flex; flex-direction: column; align-items: center; gap: 2px;
    padding: 6px 0; font-size: 10.5px; color: var(--ink-faint); border-radius: 10px;
  }
  .mobile-nav a.active { color: var(--forest); }
  .mobile-nav .icon { width: 20px; height: 20px; }
  .ticket-body { gap: 6px; }
  .swap-diagram { grid-template-columns: 1fr; }
  .sd-arrow { transform: rotate(90deg); }
  .ledger-table th:nth-child(2), .ledger-table td:nth-child(2) { display: none; }
}

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